Powder compaction press control system

Abstract

The application relates to the field of powder compaction, and discloses a powder compaction machine control system, which is communicatively connected with a powder characteristic detection module, a temperature monitoring module, a pressure monitoring module and a self-adaptive control module. According to the application, the powder characteristic detection module detects the particle size, shape and hardness of metal powder before the metal powder enters the compaction machine, the temperature monitoring module collects temperature in real time through a temperature sensor in a mold, the pressure monitoring module monitors pressure through a pressure sensor of a pressure part, and the self-adaptive control module adjusts compaction parameters based on the obtained information, so that comprehensive monitoring and parameter adjustment of the powder compaction machine are realized, basic data support is provided for subsequent accurate control, basic working information of the powder compaction machine under different metal powder characteristics and different working conditions is acquired, and the adjustability of parameters is realized, the perception ability of the system to various factors is improved, the adaptability and scientificity of the system are enhanced, and the overall performance of the powder compaction machine is optimized.

Description

Technical Field

[0001] This application relates to the field of powder pressing technology, specifically a powder pressing machine control system. Background Technology

[0002] In the powder metallurgy industry, the powder press is a key piece of equipment, and the performance of its control system plays a decisive role in product quality and production efficiency. With the continuous expansion of applications for metal products, more stringent requirements are being placed on the powder press control system; however, existing technologies still have many problems that urgently need to be solved.

[0003] In terms of metal dust management, metal powders easily generate large amounts of dust during the pressing process. This dust not only permeates the working environment, causing serious damage to the respiratory system of operators and potentially leading to occupational diseases such as pneumoconiosis with prolonged exposure, but also severely affects the normal operation of equipment. For example, dust entering the transmission components of the equipment accelerates component wear and reduces equipment lifespan; entering the electrical system may cause short circuits and other malfunctions, affecting the continuity of production. More seriously, some metal dusts are flammable and explosive; once a certain concentration is reached, they may explode upon contact with open flames or static electricity, posing a significant safety hazard to enterprises. Existing control systems generally lack effective metal dust management mechanisms. Specifically, Chinese Patent No. CN202211182576.5 discloses a method for calling and synchronously controlling the working mode of a powder forming servo press, but when applied to a powder pressing machine for metal powders, it has shortcomings in temperature control, pressure accuracy, and metal dust management due to the unique characteristics of metal powders and the unique working requirements of the pressing machine.

[0004] In terms of adapting to powder characteristics, different types of metal powders vary greatly in particle size distribution, shape, hardness, and other properties. Taking particle size as an example, fine-grained powders have poor flowability, making it difficult to fill the mold evenly during pressing, which can easily lead to uneven product density; coarse-grained powders may cause problems such as excessive gaps during pressing. Existing control systems cannot automatically and accurately adjust pressing parameters, such as pressure, speed, and time, according to changes in powder characteristics, resulting in unstable product quality, high scrap rates, and difficulty in meeting diverse production needs.

[0005] In summary, there is an urgent need for a new technical solution for controlling powder compactors used for metal powders in order to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this application is to provide a powder compactor control system to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, this application discloses the following technical solution: a powder mixing and pressing machine control system, which includes a powder characteristic detection module, a temperature monitoring module, a pressure monitoring module, and an adaptive control module connected in communication;

[0008] The powder characteristic detection module is used to detect the characteristics of metal powder before the powder enters the press; wherein, the characteristics of metal powder include particle size, shape and hardness;

[0009] The temperature monitoring module is used to monitor the temperature in real time; the temperature is collected by a temperature sensor installed in the powder compactor mold.

[0010] The pressure monitoring module is used to monitor the pressure of the powder compactor in real time; wherein, the pressure is collected by a pressure sensor installed in the pressure section of the powder compactor;

[0011] The adaptive control module is used to adjust the pressing parameters of the powder press using the characteristics of the metal powder, temperature monitoring data, and pressure monitoring data; wherein, the pressing parameters include pressing pressure, pressing speed, and pressing time.

[0012] Preferably, the pressure parameter is adjusted as follows:

[0013] A pre-set database containing the properties of different metal powders and their corresponding pressure parameters is obtained. The powder property detection results are compared with the database information to determine the adjustment strategy. The pressure parameters are then dynamically adjusted in real time based on temperature and pressure monitoring data. These real-time dynamically adjusted pressure parameters are as follows:

[0014] The pressing pressure is dynamically adjusted in real time using a pressing pressure adjustment formula, which is as follows:

[0015]

[0016] Where P represents pressure monitoring data, ΔP is the pressing pressure adjustment parameter obtained based on the error value of the previous pressure adjustment, n is the number of adjustments determined based on powder characteristics, and T is temperature monitoring data. tar For the target temperature, P tar For target pressure, P adj The calculated, dynamically adjusted pressure value;

[0017] The pressing speed is dynamically adjusted in real time using a pressing speed adjustment formula, which is as follows:

[0018]

[0019] Where V is the current pressing speed, ΔV is the speed adjustment parameter obtained based on the error value of the last speed adjustment, and m is the number of adjustments determined based on powder characteristics. adj The calculated, dynamically adjusted pressing speed value;

[0020] The pressing time is dynamically adjusted in real time using a pressing time adjustment formula, which is as follows:

[0021]

[0022] Where t is the current pressing time, Δt is the time adjustment parameter obtained based on the error value of the last time adjustment, and k is the number of adjustments determined based on powder characteristics. adj This is the calculated, dynamically adjusted suppression time value.

[0023] Preferably, the characteristics of the metal powder are detected using a pre-set particle size analyzer, scanning electron microscope, and hardness tester.

[0024] Preferably, the adaptive control module controls the temperature based on adjustments to the power of the heating or cooling system; wherein, the adjustment of the power of the heating or cooling system is as follows:

[0025] The adjustment of the heating or cooling system power is calculated using a temperature control power adjustment formula, which is:

[0026]

[0027] Where Q is the current power, ΔQ is the power adjustment parameter obtained based on the error value of the last power adjustment, h is the number of adjustments determined based on powder characteristics, and ΔT is the change value of the temperature monitoring data itself. τ Let Q be the change in the difference between the temperature monitoring data and the target temperature. adj This is the temperature control power adjustment value for the calculated heating or cooling system power.

[0028] Preferably, when the temperature monitoring module detects a temperature fluctuation greater than a preset temperature fluctuation threshold, it performs a similarity analysis between the change in the temperature control power adjustment value and the change in the historical temperature control power adjustment value. When the obtained similarity is less than or equal to the preset similarity threshold, it is determined that there is an abnormal powder pressing. This abnormal powder pressing includes at least equipment failure and abnormal powder distribution.

[0029] Preferably, when the pressure monitoring module detects that the pressure fluctuation exceeds a preset pressure fluctuation threshold, the frequency of pressure monitoring data acquisition is increased, and the pressure is fine-tuned using a pressure step formula, which is:

[0030]

[0031] Where step_A is the set of steps consisting of step_a, and A=[1,2,...,a],∑ A ΔP step_A This represents the summation of error values ​​generated during the adjustment of step_a in the step set, P. τ The preset pressing pressure adjustment base value is given by: g is the number of adjustments determined based on powder characteristics, and T is the temperature monitoring data. tar P represents the target temperature, and P represents the pressure monitoring data. tar For the target pressure, ΔP adj_step_a This is the calculated fine-tuning value for the compression pressure.

[0032] Preferably, when the particle size change detected by the powder characteristic detection module is greater than the preset particle size change threshold, the adaptive control module performs a similarity analysis on the changes of ΔP, ΔV, and Δt with their respective historical adjustment values. When the obtained similarity is less than or equal to the preset similarity threshold, it is determined that the powder press needs to be adjusted.

[0033] Preferably, when the hardness change detected by the powder characteristic detection module is greater than the preset hardness change threshold, the adaptive control module performs a similarity analysis on the changes of ΔP, ΔV, and Δt with their respective historical adjustment values. When the obtained similarity is less than or equal to the preset similarity threshold, it is determined that the powder press needs to be adjusted.

[0034] Preferably, the system also includes a metal dust treatment module, which is used to collect and purify metal dust. The metal dust treatment module includes a dust hood installed at least in the dust-generating parts of the powder press, a sealed pipe connected to the dust hood, a dust pre-processor, a pulse bag filter, and an automatic pulse cleaning device.

[0035] Preferably, the metal dust treatment module is also used for air monitoring in the powder pressing workshop, and the metal dust treatment module also includes air monitoring equipment distributed in the powder pressing workshop. When it is determined that there is an abnormality in powder pressing or that the powder pressing needs to be adjusted, the air monitoring strategy is updated. The update of the strategy includes at least increasing the monitoring range and lowering the monitoring index threshold used for monitoring.

[0036] Beneficial Effects: The powder compaction press control system of this application utilizes a powder characteristic detection module, a temperature monitoring module, a pressure monitoring module, and an adaptive control module connected by communication to construct a powder compaction press control system. The powder characteristic detection module detects the particle size, shape, and hardness of the metal powder before it enters the compaction press. The temperature monitoring module collects temperature data in real time through a temperature sensor in the mold. The pressure monitoring module monitors pressure using a pressure sensor in the pressure section. The adaptive control module adjusts the compaction parameters based on the obtained information, achieving comprehensive monitoring and parameter adjustment of the powder compaction press. This provides fundamental data support for subsequent precise control, ensuring the acquisition of basic operating information and parameter adjustability of the powder compaction press under different metal powder characteristics and operating conditions. It improves the system's ability to perceive various factors, enhances the system's adaptability and the scientific nature of control, and helps optimize the overall performance of the powder compaction press. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a structural block diagram of the powder pressing control system provided in an embodiment of this application. Detailed Implementation

[0039] The technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] In this document, the term "comprising" is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] This embodiment discloses, as follows: Figure 1 The control system of a powder mixing and pressing machine shown includes a powder characteristic detection module, a temperature monitoring module, a pressure monitoring module, and an adaptive control module that are connected in communication.

[0042] The powder characteristic detection module is used to detect the characteristics of metal powder before it enters the press; the characteristics of metal powder include particle size, shape and hardness.

[0043] The temperature monitoring module is used to monitor the temperature in real time; the temperature is collected by a temperature sensor installed in the powder compactor mold.

[0044] The pressure monitoring module is used to monitor the pressure of the powder compactor in real time; the pressure is collected by a pressure sensor installed in the pressure section of the powder compactor.

[0045] The adaptive control module is used to adjust the pressing parameters of the powder press by utilizing the characteristics of metal powder, temperature monitoring data, and pressure monitoring data; the pressing parameters include pressing pressure, pressing speed, and pressing time.

[0046] Based on the above, this embodiment constructs a powder pressing control system using a powder characteristic detection module, a temperature monitoring module, a pressure monitoring module, and an adaptive control module connected by communication. The powder characteristic detection module detects the particle size, shape, and hardness of the metal powder before it enters the pressing machine. The temperature monitoring module collects temperature data in real time through a temperature sensor in the mold. The pressure monitoring module monitors pressure using a pressure sensor in the pressure section. The adaptive control module adjusts the pressing parameters based on the obtained information, achieving comprehensive monitoring and parameter adjustment of the powder pressing machine. This provides fundamental data support for subsequent precise control, ensuring the acquisition of basic operating information and parameter adjustability of the powder pressing machine under different metal powder characteristics and operating conditions. It improves the system's ability to perceive various factors, enhances the system's adaptability and the scientific nature of control, and helps optimize the overall performance of the powder pressing machine.

[0047] Specifically, the adjustment of the closing pressure parameters is as follows:

[0048] A pre-set database containing the properties of different metal powders and their corresponding pressure parameters is obtained. The powder property detection results are compared with the database information to determine the adjustment strategy. The pressure parameters are then dynamically adjusted in real time based on temperature and pressure monitoring data. These real-time dynamically adjusted pressure parameters are as follows:

[0049] The pressing pressure is dynamically adjusted in real time using a pressing pressure adjustment formula, which is as follows:

[0050]

[0051] Where P represents pressure monitoring data, ΔP is the pressing pressure adjustment parameter obtained based on the error value of the previous pressure adjustment, n is the number of adjustments determined based on powder characteristics, and T is temperature monitoring data. tar For the target temperature, P tarFor target pressure, P adj The calculated, dynamically adjusted pressure value;

[0052] The pressing speed is dynamically adjusted in real time using a pressing speed adjustment formula, which is as follows:

[0053]

[0054] Where V is the current pressing speed, ΔV is the speed adjustment parameter obtained based on the error value of the last speed adjustment, and m is the number of adjustments determined based on powder characteristics. adj The calculated, dynamically adjusted pressing speed value;

[0055] The compression time is dynamically adjusted in real time using a compression time adjustment formula, which is as follows:

[0056]

[0057] Where t is the current pressing time, Δt is the time adjustment parameter obtained based on the error value of the last time adjustment, and k is the number of adjustments determined based on powder characteristics. adj This is the calculated, dynamically adjusted suppression time value.

[0058] In practical applications of powder presses, periodic quality inspections or failures are often used as indicators for maintenance. However, it is understandable that for metal powders, wear on the powder press is not limited to periodic quality inspections or failures. Therefore, this embodiment incorporates calculations of ΔP, ΔV, and Δt when adjusting the pressing parameters. This continuously updates the powder press's execution of commands and, combined with the judgment of particle size and hardness changes discussed later, provides a basis for powder press maintenance beyond periodic quality inspections or failures. This improves both the quality of powder press control and the quality of powder press maintenance.

[0059] Based on the above, this embodiment utilizes a pre-set database to store the characteristics of different metal powders and their corresponding pressing parameters. The powder characteristic detection results are compared with the database information, and combined with temperature and pressure monitoring data, real-time dynamic adjustments are made using specific pressing pressure, speed, and time adjustment formulas. This achieves dynamic optimization of the pressing parameters based on powder characteristics and real-time temperature and pressure monitoring, enabling the pressing pressure, speed, and time of the pressing machine to automatically adjust according to actual working conditions. This avoids unstable pressing quality caused by fixed parameters, improves product quality, and reduces errors and uncertainties caused by manual intervention. It also enhances the automation and adaptability of the powder pressing machine control system to better meet the production requirements of different metal powders and different processing needs.

[0060] Specifically, the characteristics of the metal powder are detected using a pre-set particle size analyzer, scanning electron microscope, and hardness tester.

[0061] Based on the above, this embodiment utilizes existing particle size analyzers, scanning electron microscopes, and hardness testers to detect the characteristics of metal powders. This achieves precise detection of the particle size, shape, and hardness of the metal powder, ensuring that the powder characteristic detection module can accurately acquire key information about the metal powder. This provides a precise basis for subsequent adjustments to the pressing parameters, helps improve the adaptability of the powder pressing machine control system to different metal powders, and enables the system to make reasonable adjustments based on the actual conditions of the powder. This ensures that subsequent control links operate based on accurate information, improving system reliability and product quality stability.

[0062] Specifically, the adaptive control module controls the temperature based on adjustments to the power of the heating or cooling system; whereby the adjustment of the power of the heating or cooling system is as follows:

[0063] The adjustment of the heating or cooling system power is calculated using the temperature control power adjustment formula, which is:

[0064]

[0065] Where Q is the current power, ΔQ is the power adjustment parameter obtained based on the error value of the last power adjustment, h is the number of adjustments determined based on powder characteristics, and ΔT is the change value of the temperature monitoring data itself. τ Let Q be the change in the difference between the temperature monitoring data and the target temperature. adj This is the temperature control power adjustment value for the calculated heating or cooling system power.

[0066] It is understandable that temperature has a direct impact on the quality of powder compaction, therefore accurate adjustment of the temperature control power adjustment value is necessary. Existing temperature control power adjustments mostly rely on PID control technology to precisely achieve the target value. However, in practical applications, it has been found that, besides precisely achieving the target value, finding the accurate target value remains a problem that existing technologies have not effectively solved. This embodiment designs a method based on ΔQ, ΔT, and ΔT... τ The multi-dimensional calculation of temperature control power adjustment aims to calculate the temperature control power adjustment target by taking into account the aging of temperature control equipment, actual temperature changes, and the difference between the actual temperature and the target temperature, thereby optimizing temperature control and providing a basis for improving the quality of powder compaction.

[0067] Based on the above, this embodiment utilizes a temperature control power adjustment formula to adjust the power of the heating or cooling system. By combining the current power, the number of adjustments based on powder characteristics, temperature monitoring data and its changes, precise adjustment of the heating or cooling system power is achieved, thereby effectively controlling the temperature of the powder pressing die. This ensures that the die temperature remains within a reasonable range during powder pressing, which helps improve the formability of metal powder, reduces product quality problems caused by temperature fluctuations, and improves the temperature stability and product quality consistency of the powder pressing machine under different operating conditions.

[0068] Specifically, when the temperature monitoring module detects a temperature fluctuation greater than the preset temperature fluctuation threshold, it performs a similarity analysis between the change in the temperature control power adjustment value and the change in the historical temperature control power adjustment value. When the obtained similarity is less than or equal to the preset similarity threshold, it is determined that there is an abnormal powder pressing. This abnormal powder pressing includes at least equipment failure and abnormal powder distribution.

[0069] Based on the above, this embodiment performs a similarity analysis on the changes in temperature control power adjustment values ​​and historical adjustment values ​​when the temperature monitoring module detects temperature fluctuations exceeding a preset threshold. This enables the determination of abnormal powder pressing. By comparing the similarity with the preset threshold, potential equipment malfunctions and abnormal powder distribution can be detected in a timely manner, improving the system's fault detection capability, ensuring the safe and stable operation of the powder pressing machine, avoiding product quality degradation and equipment damage caused by abnormalities, and reducing production risks and economic losses due to untimely detection of abnormalities.

[0070] Specifically, when the pressure monitoring module detects that the pressure fluctuation exceeds the preset pressure fluctuation threshold, it increases the frequency of pressure monitoring data acquisition and fine-tunes the pressure using a pressure step formula. The pressure step formula is as follows:

[0071]

[0072] Where step_A is the set of steps consisting of step_a, and A=[1,2,...,a],∑ A ΔP step_A This represents the summation of error values ​​generated during the adjustment of step_a in the step set, P. τ The preset pressing pressure adjustment base value is given by: g is the number of adjustments determined based on powder characteristics, and T is the temperature monitoring data. tar P represents the target temperature, and P represents the pressure monitoring data. tar For the target pressure, ΔP adj_step_a This is the calculated fine-tuning value for the compression pressure.

[0073] It should be noted that the pressing pressure is the variable that most directly affects the quality of powder bonding; pressure fluctuations will directly lead to a decrease in bonding quality. A single adjustment of the pressing pressure using a coarse setting cannot meet more complex bonding requirements. Therefore, this embodiment designs a pressing pressure step formula, achieving more refined bonding control by adjusting the basic pressing pressure adjustment value established using powder characteristics and experience known to those skilled in the art.

[0074] Based on the above, this embodiment, when the pressure monitoring module detects that the pressure fluctuation exceeds a preset threshold, increases the frequency of pressure monitoring data acquisition and uses a pressure step formula to fine-tune the pressure. This achieves precise adjustment of the pressure. By considering factors such as the step set, error value, number of adjustments, temperature, and pressure monitoring data, it can react quickly to pressure fluctuations, ensuring the stability of the pressure, improving the system's ability to cope with pressure fluctuations, and guaranteeing the pressure stability of the pressing process, thereby ensuring the stability and consistency of product quality.

[0075] Specifically, when the particle size change detected by the powder characteristic detection module is greater than the preset particle size change threshold, the adaptive control module performs a similarity analysis on the changes of ΔP, ΔV, and Δt with their respective historical adjustment values. When the obtained similarity is less than or equal to the preset similarity threshold, it is determined that the powder press needs to be adjusted.

[0076] Based on the above, this embodiment performs a similarity analysis on the changes in relevant parameters and their historical adjustment values ​​when the powder characteristic detection module detects a particle size change greater than a preset threshold. This enables the determination of whether the powder pressing press needs adjustment, allowing for timely detection of system adaptability issues based on changes in powder particle size. It improves the system's sensitivity to particle size variations, preventing uncontrolled pressing processes caused by particle size changes, and ensuring the system can adjust its operating status promptly according to particle size variations, thereby guaranteeing product quality and production continuity.

[0077] Specifically, when the hardness change detected by the powder characteristic detection module is greater than the preset hardness change threshold, the adaptive control module performs a similarity analysis on the changes of ΔP, ΔV, and Δt with their respective historical adjustment values. When the obtained similarity is less than or equal to the preset similarity threshold, it is determined that the powder press needs to be adjusted.

[0078] Based on the above, this embodiment performs a similarity analysis on the changes in relevant parameters and their historical adjustment values ​​when the powder characteristic detection module detects a hardness change greater than a preset threshold. This enables the determination of whether the powder pressing machine needs adjustment. By timely monitoring hardness changes, the system's responsiveness to changes in the hardness of metal powders is improved, ensuring that the system can make corresponding adjustments based on changes in hardness. This avoids product quality problems caused by hardness changes and enhances the system's adaptability to metal powders of different hardnesses and the stability of product quality.

[0079] Specifically, the system also includes a metal dust treatment module, which is used to collect and purify metal dust. The metal dust treatment module includes a dust hood installed at least in the dust-generating parts of the powder press, a sealed pipe connected to the dust hood, a dust pre-processor, a pulse bag filter, and an automatic pulse cleaning device.

[0080] Based on the above, this embodiment utilizes a metal dust treatment module and its included dust collection hood, sealed pipes, dust pre-processor, pulse bag filter, and automatic pulse cleaning device to collect and purify metal dust. This achieves effective treatment of metal dust generated during the operation of the powder press, reducing environmental pollution and health hazards to operators, while also preventing adverse effects of metal dust on equipment. This ensures a safe working environment and normal equipment operation, improves the cleanliness of the production environment, and extends the equipment's lifespan.

[0081] Specifically, the metal dust treatment module is also used for air monitoring in the powder pressing workshop. The metal dust treatment module also includes air monitoring equipment distributed in the powder pressing workshop. When it is determined that there is an abnormality in powder pressing or that the powder pressing needs to be adjusted, the air monitoring strategy is updated. The update of the strategy includes at least increasing the monitoring range and lowering the monitoring index thresholds used for monitoring.

[0082] Based on the above, this embodiment utilizes the air monitoring equipment of the metal dust treatment module to monitor workshop air quality. When an abnormality in powder compaction is detected or adjustments to the powder compactor are required, the monitoring strategy is updated. This achieves dynamic adjustment of workshop air monitoring. By increasing the monitoring range and lowering the monitoring index thresholds, the monitoring capability of the workshop environment is enhanced. This helps to promptly identify potential environmental risks when system anomalies occur, further ensuring the safety and stability of the production process. Simultaneously, it can serve as an auxiliary means of judging system anomalies, improving the overall performance of the powder compactor control system.

[0083] In summary, the powder press control system of this embodiment utilizes a powder characteristic detection module, a temperature monitoring module, a pressure monitoring module, and an adaptive control module connected by communication to construct a powder press control system. The powder characteristic detection module detects the particle size, shape, and hardness of the metal powder before it enters the press. The temperature monitoring module collects temperature data in real time through a temperature sensor in the mold. The pressure monitoring module monitors pressure using a pressure sensor in the pressure section. The adaptive control module adjusts the pressing parameters based on the obtained information, achieving comprehensive monitoring and parameter adjustment of the powder press. This provides fundamental data support for subsequent precise control, ensuring the acquisition of basic operating information and parameter adjustability of the powder press under different metal powder characteristics and operating conditions. It improves the system's ability to perceive various factors, enhances the system's adaptability and the scientific nature of control, and helps optimize the overall performance of the powder press.

[0084] In the embodiments provided in this application, it should be understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, code, or any suitable combination thereof. For hardware implementation, the processor may be implemented in one or more of the following: application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, other electronic units designed to implement the functions described herein, or combinations thereof. For software implementation, some or all of the processes of the embodiments may be performed by a computer program instructing the associated hardware. During implementation, the program may be stored in a computer-readable storage medium or transmitted as one or more instructions or code on a computer-readable storage medium. Computer-readable storage media include computer storage media and communication media, wherein communication media include any medium that facilitates the transmission of a computer program from one place to another. Storage media may be any available medium accessible to a computer. Computer-readable storage media may include, but are not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code having the form of instructions or data structures and accessible to a computer.

[0085] Finally, it should be noted that the above description is only a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A powder compaction press control system, characterized by, The system comprises a powder characteristic detection module, a temperature monitoring module, a pressure monitoring module and an adaptive control module connected in communication; The powder characteristic detection module is configured to detect the metal powder characteristics before the powder enters the compaction machine, wherein the metal powder characteristics include particle size, shape and hardness; The temperature monitoring module is configured to monitor the temperature in real time, wherein the temperature is collected by a temperature sensor installed in the mold of the powder compaction machine; The pressure monitoring module is configured to monitor the pressure of the compaction machine in real time, wherein the pressure is collected by a pressure sensor installed in the pressure part of the powder compaction machine; The adaptive control module is configured to adjust the compaction parameters of the powder compaction machine using the metal powder characteristics, temperature monitoring data and pressure monitoring data, wherein the compaction parameters include compaction pressure, compaction speed and compaction time; The adjustment of the compaction parameters is as follows: A database with different metal powder characteristics and their corresponding compaction parameters is obtained, the powder characteristic detection result is compared with the database information to determine the adjustment strategy, and the compaction parameters are dynamically adjusted in real time in combination with the temperature monitoring data and the pressure monitoring data, which is as follows: The compaction pressure is dynamically adjusted in real time using a compaction pressure adjustment formula, which is as follows: wherein, is pressure monitoring data, is a pressing pressure adjustment parameter obtained based on an error value at the last pressure adjustment, is a number of adjustments determined based on powder characteristics, is temperature monitoring data, is a target temperature, is a target pressure, is a calculated real-time dynamically adjusted pressing pressure value; The compaction speed is dynamically adjusted in real time using a compaction speed adjustment formula, which is as follows: wherein, is the current pressing speed, is a speed adjustment parameter obtained based on an error value at the last time of speed adjustment, is the number of adjustments determined based on the characteristics of the powder, is the pressing speed value of real-time dynamic adjustment calculated. The compaction time is dynamically adjusted in real time using a compaction time adjustment formula, which is as follows: wherein, is the current pressing time, is the time adjustment parameter obtained based on the error value at the last time adjustment, is the adjustment number determined based on the powder characteristics, is the calculated real-time dynamically adjusted pressing time value.

2. The powder consolidation press control system of claim 1, wherein, The metal powder characteristics are detected using a preset particle size analyzer, scanning electron microscope and hardness tester.

3. The powder consolidation press control system of claim 1, wherein, The adaptive control module controls the temperature based on the adjustment of the power of the heating or cooling system, wherein the adjustment of the power of the heating or cooling system is as follows: The adjustment of the power of the heating or cooling system is calculated using a temperature control power adjustment formula, which is as follows: wherein, is the current power, is a power adjustment parameter obtained based on an error value at the time of the last power adjustment, is the number of adjustments determined based on the characteristics of the powder, is a change value of the temperature monitoring data itself, is a change value of the difference between the temperature monitoring data and the target temperature, is a temperature control power adjustment value of the calculated heating or cooling system power.

4. The powder consolidation press control system of claim 3, wherein, When the temperature monitoring module detects that the temperature fluctuation is greater than a preset temperature fluctuation threshold, the change of the temperature control power adjustment value is analyzed for similarity with the change of the historical temperature control power adjustment value, and when the obtained similarity is less than or equal to a preset similarity threshold, it is determined that there is a powder compaction abnormality, which at least includes equipment failure and powder distribution abnormality.

5. The powder consolidation press control system of claim 1, wherein, When the pressure monitoring module detects that the compaction pressure fluctuation is greater than a preset compaction pressure fluctuation threshold, the collection frequency of the pressure monitoring data is increased, and the compaction pressure is fine-tuned using a compaction pressure step formula, which is as follows: wherein, is a step set composed of steps , and , represents summing up error values generated when steps in the step set are adjusted, is a preset pressing pressure adjustment base value at the step, is an adjustment number determined based on powder characteristics, is temperature monitoring data, is a target temperature, is pressure monitoring data, is a target pressure, is a calculated pressing pressure fine adjustment value.

6. The powder consolidation press control system of claim 1, wherein, When the variation of the particle size detected by the powder property detection module is greater than a preset variation threshold of the particle size, the self-adaptive control module adjusts the 、 and corresponding historical adjustment values are analyzed, and when the obtained similarity is less than or equal to a preset similarity threshold, it is determined that the powder compression machine needs to be adjusted.

7. The powder consolidation press control system of claim 1, wherein, When the hardness change amount detected by the powder property detection module is greater than a preset hardness change amount threshold, the self-adaptive control module adjusts the powder compression machine 、 and corresponding historical adjustment values are analyzed for similarity, and when the obtained similarity is less than or equal to a preset similarity threshold, it is determined that the powder compression machine needs to be adjusted.

8. The powder consolidation press control system of claim 1, wherein, The system further comprises a metal dust treatment module, which is configured to collect and purify the metal dust, and the metal dust treatment module comprises at least a dust collection hood installed at a dust-prone part of the powder compaction machine, a sealed pipeline connected to the dust collection hood, a dust pretreater, a pulse bag dust collector and an automatic pulse ash removal device.

9. The powder compacting press control system of any one of claims 4, 6 or 7, wherein, The system also includes a metal dust treatment module for carrying out air monitoring of the powder compression machine workshop, and the metal dust treatment module includes distributed air monitoring devices arranged in the powder compression machine workshop, and when it is determined that there is a powder compression abnormality or it is determined that the powder compression machine needs to be adjusted, the strategy of air monitoring is updated, and the update of the strategy at least includes increasing the monitoring range and reducing the monitoring index threshold for monitoring.

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