Monitoring method and system for heating system of injection molding machine

Abstract

The invention belongs to the technical field of injection molding machines, and particularly relates to a monitoring method and system for a heating system of an injection molding machine. According to the adjustment deviation duration and the adjustment deviation value, obtaining an adjustment time proportion and an adjustment deviation control ratio in the regulation and control process of the injection molding machine, and further obtaining an adjustment different table value of the injection molding machine; single-time adjustment state recognition of the temperature of the injection molding machine charging barrel is completed based on the adjustment different table value of the injection molding machine, and characterization state data of temperature adjustment of the injection molding machine charging barrel is obtained in a period to obtain an adjustment control and detection value; comparing the adjustment control and detection value with an adjustment control and detection threshold value to obtain a control effect excellent signal and a control effect different signal of the injection molding machine charging barrel; the adjustment behavior data of the injection molding machine charging barrel in the monitoring period is processed according to the control effect difference signal to obtain the operation management inspection value of the injection molding machine equipment, the state monitoring of the injection molding machine is completed based on the operation management inspection value of the injection molding machine equipment, and the applicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, in particular to a monitoring method and system for a heating system of an injection molding machine. Background Art

[0002] Injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. There are many types according to different classification standards. For example, according to the form of the clamping mechanism, it can be divided into direct pressure type, elbow type, hydraulic-mechanical type, etc.; according to the injection method, it can be divided into plunger type, screw type, etc.

[0003] The main function of the heating system of the injection molding machine is to make the temperature of the barrel and the nozzle reach the optimal melting temperature of the processed material. By providing a stable heat source, it ensures that the plastic raw material is fully plasticized in the barrel, thereby meeting the requirements of injection molding. In the prior art, during the heating process of the injection molding machine barrel by the injection molding machine heating system, there is a lack of refined identification of the degree and frequency of heating or cooling of the injection molding machine barrel, and the temperature control quality of the injection molding machine barrel cannot be effectively controlled, which has great limitations. Summary of the invention

[0004] The purpose of the present invention is to provide a monitoring method and system for the heating system of an injection molding machine, which solves the problems that the prior art is difficult to achieve temperature control of two or more sets of equipment at the same time, is not conducive to energy saving and environmental protection, and cannot reasonably evaluate the accuracy of temperature control execution for the injection molding machine barrel, has a low degree of intelligence and is difficult to supervise.

[0005] To achieve the above object, the present invention provides the following technical solutions: A monitoring method and system for a heating system of an injection molding machine, comprising the following steps: Collect the temperature information of the injection molding machine barrel, and compare the collected temperature information with the corresponding temperature threshold of the injection molding machine barrel cooling or heating to complete the injection molding temperature control of the injection molding machine barrel; In temperature control, the adjustment deviation time and adjustment deviation value for cooling or heating in the injection molding machine control process are obtained, and the adjustment time proportion and adjustment control deviation ratio in the injection molding machine control process are obtained according to the adjustment deviation time and adjustment deviation value, and the adjustment deviation table value of the injection molding machine is obtained based on the processing of the adjustment time proportion and the adjustment control deviation ratio; Based on the adjustment abnormality table value of the injection molding machine, the single adjustment state identification of the injection molding machine barrel temperature is completed, and the adjustment state includes the adjustment process failure and the adjustment process qualification; Based on the single adjustment state of the injection molding machine barrel temperature, the characterization state data of the injection molding machine barrel temperature adjustment is obtained within the cycle, and the adjustment control value of the injection molding machine barrel within the monitoring cycle is obtained based on the characterization state data; The adjustment control inspection value is compared with the adjustment control inspection threshold to obtain the control effect good signal and control effect bad signal of the injection molding machine barrel; According to the control effect abnormality signal, the adjustment behavior data of the injection molding machine barrel within the monitoring period is processed to obtain the operation inspection value of the injection molding machine equipment, and the injection molding machine status monitoring is completed based on the operation inspection value of the injection molding machine equipment.

[0006] As a further solution of the present invention: the process of obtaining the proportion during adjustment is: When the temperature of the injection molding machine barrel deviates from the set temperature of the injection molding machine barrel; Obtain the actual adjustment time required for the corresponding adjustment of the injection molding machine barrel temperature deviation; The deviation value of the actual adjustment duration compared to the corresponding target calibration duration is recorded as the adjustment deviation duration, and the ratio of the adjustment deviation duration to the target calibration duration is recorded as the adjustment time ratio.

[0007] As a further solution of the present invention: the process of obtaining the adjustment bias ratio is as follows: When the temperature of the injection molding machine barrel deviates from the set temperature of the injection molding machine barrel; Obtain the actual control amount required for the corresponding adjustment of the injection molding machine barrel temperature deviation; The deviation value of the actual control amount compared to the corresponding target control amount is recorded as the control deviation value, and the ratio of the control deviation value to the target control amount is recorded as the control deviation ratio.

[0008] As a further solution of the present invention: the adjustment error table value is numerically compared with the corresponding preset adjustment error table threshold value: If the adjustment abnormal table value is greater than or equal to the preset adjustment abnormal table threshold, the corresponding adjustment process is judged to be unqualified; If the adjustment error value is less than the preset adjustment error threshold, the corresponding adjustment process is judged to be qualified.

[0009] As a further solution of the present invention: the characterization state data of the temperature adjustment of the barrel of the injection molding machine includes the adjustment detection value, the adjustment non-standard difference ratio and the adjustment abnormal condition value; The adjustment check value is recorded as QS; The adjusted non-standard difference ratio is recorded as SP; The adjustment abnormality value is recorded as QP; By formula The adjustment control value QY is calculated; If the control value QY exceeds the preset control threshold, a control error signal is generated; If the control value QY does not exceed the preset control threshold, a control effectiveness signal is generated.

[0010] As a further solution of the present invention: the process of obtaining the adjusted detection value is as follows: The number of times the adjustment process of the injection molding machine barrel fails to meet the standards during the monitoring period is obtained and recorded as the abnormal adjustment detection value; The total number of adjustment processes for the barrel of the injection molding machine during the monitoring period is obtained and recorded as the adjustment detection value, and the abnormal adjustment detection value is compared with the adjustment detection value to obtain the abnormal adjustment detection ratio; The process of obtaining the adjustment abnormality value is as follows: The adjustment error table value of each corresponding adjustment process is calculated by ratio with the corresponding preset adjustment error table threshold to obtain the adjustment error percentage value.

[0011] As a further solution of the present invention: the process of adjusting the acquisition of the non-standard difference ratio is: Obtain the adjustment deviation table value for each unqualified adjustment process of the injection molding machine barrel during the monitoring period, sum and average the adjustment deviation table values ​​corresponding to all unqualified adjustment processes during the monitoring period, and obtain the adjustment non-standard deviation table value; Obtain the adjustment deviation table value for each qualified adjustment process of the injection molding machine barrel during the monitoring period, sum and average the adjustment deviation table values ​​corresponding to all qualified adjustment processes during the monitoring period, and obtain the adjustment positive standard deviation table value; Calculate the difference between the adjusted non-standard deviation table value and the adjusted positive standard deviation table value to obtain the adjusted non-standard deviation value; Calculate the ratio of the adjusted non-standard difference to the adjusted positive standard difference table value to obtain the adjusted non-standard difference ratio.

[0012] As a further solution of the present invention: the adjustment behavior data of the injection molding machine barrel in the monitoring period includes the adjustment frequency analysis value, the difference interval detection value and the adjustment difference square value; By formula Calculate the adjustment frequency analysis value YR, the different isolation inspection value YF and the adjustment different square value RF to obtain the operation inspection value YL of the injection molding machine equipment, where a1, a2 and a3 are all preset proportional coefficients; If the operation inspection value YL exceeds the preset operation inspection threshold, the corresponding equipment will be marked as a re-controlled equipment; If the operation inspection value YL does not exceed the preset operation inspection threshold, the corresponding equipment will be marked as lightly controlled equipment.

[0013] As a further solution of the present invention: the process of adjusting the heteroscedastic value is as follows: Obtain the adjustment error table value corresponding to each adjustment of the injection molding machine barrel during the cooling or heating process, and integrate all the adjustment error table values ​​to obtain an adjustment error table value group; According to the variance calculation formula, the adjusted variance table value group is processed to obtain the adjusted variance table variance; The adjusted variance is multiplied by the adjusted nonstandard deviation ratio to obtain the adjusted variance value.

[0014] As a further solution of the present invention: a monitoring system for a heating system of an injection molding machine, comprising a temperature acquisition module, a temperature adjustment module, a regulation analysis module, a regulation characterization module and an operation supervision module; The temperature acquisition module is used to collect the temperature information of the injection molding machine barrel, and compare the collected temperature information with the corresponding temperature threshold of the cooling or heating of the injection molding machine barrel to complete the regulation of the injection molding temperature of the injection molding machine barrel; The temperature control module is used to obtain the adjustment deviation time and adjustment deviation value for cooling or heating in the injection molding machine control process during temperature control, and obtain the adjustment time proportion and adjustment control deviation ratio in the injection molding machine control process according to the adjustment deviation time and adjustment deviation value, and obtain the adjustment deviation table value of the injection molding machine based on the processing of the adjustment time proportion and the adjustment control deviation ratio; The adjustment analysis module completes the single adjustment state identification of the injection molding machine barrel temperature based on the adjustment abnormality table value of the injection molding machine. The adjustment state includes the adjustment process failure and the adjustment process qualification. The control characterization module obtains the characterization state data of the temperature regulation of the injection molding machine barrel within a cycle based on the single adjustment state of the injection molding machine barrel temperature, and obtains the adjustment control value of the injection molding machine barrel within the monitoring cycle based on the characterization state data; The adjustment control inspection value is compared with the adjustment control inspection threshold to obtain the control effect good signal and control effect bad signal of the injection molding machine barrel; The operation supervision module is used to process the adjustment behavior data of the injection molding machine barrel during the monitoring period according to the control effect abnormality signal to obtain the operation inspection value of the injection molding machine equipment, and complete the injection molding machine status monitoring based on the operation inspection value of the injection molding machine equipment.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention receives and processes temperature signals through a temperature acquisition module to control the operation of a refrigeration adjustment unit and a heating adjustment unit, which can effectively control the refrigeration and heating of an injection molding machine barrel, realize precise control of the temperature of the injection molding machine barrel, and collect the actual adjustment time and the actual adjustment amount of the corresponding adjustment process during the control process of the injection molding machine barrel temperature, and then obtain the adjustment time proportion and the adjustment control deviation ratio through the actual adjustment time proportion and the actual adjustment amount, and obtain the adjustment abnormal table value in each temperature control adjustment process of the injection molding machine barrel according to the adjustment time proportion and the adjustment control deviation ratio, thereby completing the temperature control adjustment state and accuracy of each injection molding machine barrel; 2. The present invention identifies the adjustment state of the injection molding machine barrel within the monitoring period based on the adjustment abnormal table value obtained by each temperature control adjustment of the injection molding machine barrel, that is, by obtaining the adjustment inspection value, adjustment non-standard difference ratio and adjustment abnormality value of the injection molding machine barrel temperature control adjustment within the monitoring period, and obtaining the adjustment control inspection value by adjusting the inspection value, adjustment non-standard difference ratio and adjustment abnormality value, thereby realizing the identification of the injection molding machine temperature control adjustment performance from the number of unqualified temperature control adjustments and the degree of deviation of the temperature control adjustments; 3. In the present invention, the temperature acquisition module is used to analyze the cooling or heating control performance of the injection molding machine barrel within the monitoring period through the control effect measurement unit, and a control effect abnormality signal or a control effect excellent signal is generated through analysis. When the control effect abnormality signal is generated, the temperature control adjustment status of the injection molding machine barrel is detected and evaluated. That is, the abnormality of the injection molding machine is identified by obtaining the total number of temperature control adjustments performed on the injection molding machine barrel within the monitoring period, the interval duration of the temperature control adjustments, and the fluctuation state during each temperature control adjustment process. The corresponding equipment is marked as a heavy-control device or a weak-control device through analysis, which is conducive to ensuring the subsequent stable operation of the injection molding machine barrel and significantly reducing the management difficulty of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings; Figure 1 This is a flow chart of a method for monitoring a heating system of an injection molding machine according to an embodiment of the present invention; Figure 2 It is a flow chart of the adjustment performance of the barrel of an injection molding machine in a monitoring method of a heating system of an injection molding machine according to an embodiment of the present invention; Figure 3 The present invention is a flowchart of a monitoring system for a heating system of an injection molding machine according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1: Figure 1 As shown, a monitoring method for a heating system of an injection molding machine proposed by the present invention comprises the following steps: Collect the temperature information of the injection molding machine barrel, and compare the collected temperature information with the corresponding temperature threshold of the injection molding machine barrel cooling or heating to complete the injection molding temperature control of the injection molding machine barrel; In temperature control, the adjustment deviation time and adjustment deviation value for cooling or heating in the injection molding machine control process are obtained, and the adjustment time proportion and adjustment control deviation ratio in the injection molding machine control process are obtained according to the adjustment deviation time and adjustment deviation value, and the adjustment deviation table value of the injection molding machine is obtained based on the processing of the adjustment time proportion and the adjustment control deviation ratio; Based on the adjustment abnormality table value of the injection molding machine, the single adjustment state identification of the injection molding machine barrel temperature is completed, and the adjustment state includes the adjustment process failure and the adjustment process qualification; Based on the single adjustment state of the injection molding machine barrel temperature, the characterization state data of the injection molding machine barrel temperature adjustment is obtained within the cycle, and the adjustment control value of the injection molding machine barrel within the monitoring cycle is obtained based on the characterization state data; The adjustment control inspection value is compared with the adjustment control inspection threshold to obtain the control effect good signal and control effect bad signal of the injection molding machine barrel; According to the control effect abnormality signal, the adjustment behavior data of the injection molding machine barrel within the monitoring period is processed to obtain the operation inspection value of the injection molding machine equipment, and the injection molding machine status monitoring is completed based on the operation inspection value of the injection molding machine equipment.

[0019] Specifically, the temperature information of the barrel of the injection molding machine is collected in real time through the temperature sensor, and the collected temperature information and the cooling or heating control information for the barrel of the injection molding machine are sent to the background management terminal; It should be noted that during the operation of the injection molding machine, in order to make the processed materials reach the optimal melting temperature, the heating adjustment unit is required to raise the temperature of the injection molding machine barrel to ensure that the materials in the injection molding machine barrel are fully plasticized. At the same time, in order to prevent the processed materials from melting at the discharge port of the barrel, the refrigeration adjustment unit is required to cool the injection molding machine barrel to prevent the raw materials from melting at the discharge port and causing the material to fail to discharge normally. The control system of the present invention can simultaneously and independently control the temperature of the injection molding machine barrel, and adjust the cooling or heating conditions as needed to achieve precise temperature control and optimization of energy efficiency.

[0020] According to the set temperature threshold, the collected temperature information is compared with the corresponding temperature threshold (the upper and lower temperature limits of the barrel of the injection molding machine are set according to the corresponding injection molding material), and the operation of the cooling adjustment unit and the heating adjustment unit is automatically switched accordingly; When the temperature of the injection molding machine barrel is higher than the set temperature upper limit, the temperature acquisition module starts the refrigeration adjustment unit to achieve the refrigeration effect; when the temperature of the injection molding machine barrel is lower than the set temperature lower limit, the temperature acquisition module starts the heating adjustment unit to achieve the heating effect.

[0021] The present invention receives and processes temperature signals through a temperature acquisition module to control the operation of a refrigeration adjustment unit and a heating adjustment unit, which can effectively control the refrigeration and heating of an injection molding machine barrel and achieve precise control of the injection molding machine barrel temperature.

[0022] Embodiment 2: The difference between this embodiment and embodiment 1 is that a monitoring period is set, and the cooling or heating control performance of the injection molding machine barrel is analyzed during the monitoring period, and a control effect abnormality signal or a control effect excellent signal is generated through analysis, and a corresponding warning is issued when the control effect abnormality signal is generated, so that the staff can promptly conduct cause investigation and analysis and optimize and upgrade the control components or inspect and repair the injection molding machine barrel, so as to ensure the subsequent cooling or heating control effect of the injection molding machine barrel and reduce the difficulty of temperature control during the operation of the injection molding machine; The specific operation process is as follows: When judging that the temperature of the injection molding machine barrel is higher than the set temperature upper limit or lower than the set temperature lower limit, the rationality of the adjustment is analyzed one by one to judge whether the adjustment process of the temperature acquisition module for the injection molding machine barrel is qualified, specifically: When it is determined that the temperature of the injection molding machine barrel is higher than the set temperature upper limit, the deviation value of the injection molding machine barrel temperature compared to the set temperature upper limit is marked as the temperature droop value, and several groups of preset temperature droop value ranges are set in advance, and each group of preset temperature droop value ranges corresponds to a group of standard droop time and standard cooling capacity; the temperature droop value is compared with all the preset temperature droop value ranges one by one, and the standard droop time and standard cooling capacity corresponding to the preset temperature droop value range containing the temperature droop value are marked as the target droop time and target cooling capacity respectively; When it is determined that the temperature of the injection molding machine barrel is lower than the set temperature lower limit, the deviation value of the injection molding machine barrel temperature compared to the set temperature lower limit is marked as the temperature calibration value, and several groups of preset temperature calibration value ranges are set in advance, and each group of preset temperature calibration value ranges corresponds to a group of standard calibration time and standard heating capacity; the temperature calibration value is compared with all the preset temperature calibration value ranges one by one, and the standard calibration time and standard heating capacity corresponding to the preset temperature calibration value range containing the temperature calibration value are marked as the target calibration time and target heating capacity respectively; And collect the actual adjustment time for the corresponding adjustment process, and collect the actual control amount (actual cooling capacity or actual heating capacity) of the corresponding adjustment process; The deviation value of the actual adjustment time compared to the corresponding target calibration down time or target calibration up time is recorded as the adjustment deviation time, and the ratio of the adjustment deviation time to the target calibration time is recorded as the adjustment time ratio; Among them, when the injection molding machine barrel is refrigerated, the target calibration time is the target calibration down time; when the injection molding machine barrel is heated, the target calibration time is the target calibration up time. The deviation value of the actual cooling capacity or the actual heating capacity compared to the corresponding target cooling capacity or the target heating capacity is recorded as the adjustment deviation value, and the ratio of the adjustment deviation value to the target control value is recorded as the adjustment deviation ratio; Among them, when the injection molding machine barrel is refrigerated, the target control amount is the target cooling amount; when the injection molding machine barrel is heated, the target control amount is the target heating amount.

[0023] By formula The adjustment time proportion TY and the adjustment control deviation ratio TK are numerically calculated to obtain the adjustment abnormality table value TN, wherein wq1 and wq2 are preset proportional coefficients, and the values ​​of wq1 and wq2 are both positive numbers; From the above formula for obtaining the adjustment error table value TN, it can be seen that the larger the value of the adjustment error table value TN, that is, the larger the corresponding adjustment time ratio and adjustment control deviation ratio, it means that during the cooling or heating process of the injection molding machine barrel, the greater the deviation between the actual adjustment time and the actual cooling capacity (or actual heating capacity) compared with the target adjustment time and the target cooling capacity (or target heating capacity), indicating that the adjustment performance for the corresponding adjustment process is worse; Compare the adjustment error table value TN with the corresponding preset adjustment error table threshold. If the adjustment error table value TN is greater than or equal to the preset adjustment error table threshold, it indicates that the adjustment performance of the corresponding adjustment process is poor, and the corresponding adjustment process is judged to be unqualified. On the contrary, if the adjustment error table value TN is less than the preset adjustment error table threshold, the corresponding adjustment process is judged to be qualified. The number of occurrences of unqualified adjustment processes of the barrel of the injection molding machine and the total number of adjustment processes within the monitoring period are obtained and marked as adjustment abnormality detection values ​​and adjustment detection values ​​respectively, and the ratio of the adjustment abnormality detection value to the adjustment detection value is marked as the adjustment abnormality detection ratio; Obtain the adjustment deviation table value for each unqualified adjustment process of the injection molding machine barrel during the monitoring period, sum and average the adjustment deviation table values ​​corresponding to all unqualified adjustment processes during the monitoring period, and obtain the adjustment non-standard deviation table value; Obtain the adjustment deviation table value for each qualified adjustment process of the injection molding machine barrel during the monitoring period, sum and average the adjustment deviation table values ​​corresponding to all qualified adjustment processes during the monitoring period, and obtain the adjustment positive standard deviation table value; Calculate the difference between the adjusted non-standard deviation table value and the adjusted positive standard deviation table value to obtain the adjusted non-standard deviation value; Calculate the ratio of the adjusted non-standard difference to the adjusted positive standard deviation table value to obtain the adjusted non-standard difference ratio; And the ratio of the adjustment abnormality table value of each corresponding adjustment process to the corresponding preset adjustment abnormality table threshold is marked as the adjustment abnormality value, and the adjustment abnormality value is obtained by calculating the average of all the adjustment abnormality values ​​of the injection molding machine barrel within the monitoring period; By formula The adjustment inspection value QS, the adjustment non-standard difference ratio SP and the adjustment abnormality value QP are numerically calculated to obtain the adjustment control inspection value QY; From the above formula for obtaining the adjustment control inspection value, it can be seen that the more times the adjustment process of the injection molding machine barrel fails to meet the standards, the larger the corresponding adjustment inspection value will be; the larger the difference between the adjustment abnormality table value when the adjustment process of the injection molding machine barrel fails to meet the standards and the adjustment abnormality table value when the adjustment process of the injection molding machine barrel meets the standards, the larger the corresponding adjustment non-standard difference ratio will be; the larger the overall adjustment abnormality table value of the injection molding machine barrel during the monitoring period, the larger the obtained adjustment abnormality value, and thus the larger the value of the overall obtained adjustment control inspection value QY, indicating that the temperature control adjustment performance of the injection molding machine barrel during the monitoring period is generally worse; like Figure 2 As shown, the adjustment control inspection value QY is numerically compared with the preset adjustment control inspection threshold. If the adjustment control inspection value QY exceeds the preset adjustment control inspection threshold, it indicates that the adjustment performance of the injection molding machine barrel during the monitoring period is generally poor, and a control effect abnormality signal is generated; if the adjustment control inspection value QY does not exceed the preset adjustment control inspection threshold, it indicates that the adjustment performance of the injection molding machine barrel during the monitoring period is generally good, and a control effect excellent signal is generated; The control efficiency signal indicates that the injection molding machine operates normally within the monitoring period; The control effect abnormality signal indicates that the injection molding machine is operating abnormally during the monitoring period; It should be noted that the monitoring period is set by the staff based on experience, including but not limited to 1 day, 3 days or 10 days; At the same time, the monitoring cycle can also be divided according to the different materials during injection molding by the injection molding machine.

[0024] Embodiment 3: The difference between this embodiment and Embodiment 1 and Embodiment 2 is that the temperature control adjustment status of the injection molding machine barrel is detected and evaluated based on the control effect abnormal signal, and the abnormal state level of the injection molding machine equipment is marked, and the marking information of the injection molding machine equipment is sent to the background management terminal. When the background management terminal receives the marking level of the corresponding injection molding machine equipment, it issues a corresponding warning to remind the staff to strengthen the maintenance of the operation status of the injection molding machine equipment, and inspect and repair the injection molding machine equipment as needed, so as to ensure the subsequent stable operation of the injection molding machine equipment and ensure the injection molding quality of the product; The specific analysis process of the equipment operation and management unit is as follows: The total working time of the injection molding machine barrel during the monitoring period is collected, and the total number of temperature control adjustments made to the injection molding machine barrel during the monitoring period is marked as the frequency modulation value, and the ratio of the frequency modulation value to the total working time is marked as the adjustment frequency analysis value; The time when the injection molding machine barrel is adjusted is collected and marked as the adjustment start time, and the interval between two adjacent groups of adjustment start times is marked as the adjustment interval time; Compare the interval time with the preset interval time threshold. If the interval time does not exceed the preset interval time threshold, mark the corresponding interval time as abnormal interval time. Obtain the number of abnormal interval times of the injection molding machine barrel in the monitoring period and mark its ratio to the total working time as the abnormal interval detection value. Obtain the adjustment error table value corresponding to each adjustment of the injection molding machine barrel during the cooling or heating process, and integrate all the adjustment error table values ​​to obtain an adjustment error table value group; According to the variance calculation formula, the adjusted variance table value group is processed to obtain the adjusted variance table variance; The adjusted variance is multiplied by the adjusted non-standard deviation ratio to obtain the adjusted variance value; By formula Calculate the adjustment frequency analysis value YR, the different isolation inspection value YF and the adjustment different square value RF to obtain the operation inspection value YL of the injection molding machine equipment, where a1, a2, and a3 are all preset proportional coefficients, and a1, a2, and a3 are all greater than zero; From the above formula for obtaining the operation inspection value of the injection molding machine, it can be seen that when the injection molding machine is in a poor control state, the more times the corresponding injection molding machine barrel is temperature-controlled, the greater the temperature fluctuation of the injection molding machine barrel, the greater the number of abnormal intervals, the more mutation states of the injection molding machine barrel, the greater the adjustment anomaly value, the greater the deviation degree (time and control amount) of each adjustment of the injection molding machine barrel, and the larger the value of the operation inspection value YL, the greater the degree of abnormal operation of the injection molding machine barrel during the monitoring period; The operation inspection value YL is numerically compared with the preset operation inspection threshold. If the operation inspection value YL exceeds the preset operation inspection threshold, it indicates that the overall difficulty of operation management of the injection molding machine barrel during the monitoring period is relatively large, and the corresponding equipment is marked as heavy-control equipment; if the operation inspection value YL does not exceed the preset operation inspection threshold, it indicates that the overall difficulty of operation management of the injection molding machine barrel during the monitoring period is relatively small, and the corresponding equipment is marked as light-control equipment.

[0025] Embodiment 4, as Figure 3 As shown, a monitoring system for a heating system of an injection molding machine proposed in the present invention includes a temperature acquisition module, a temperature adjustment module, a regulation analysis module, a regulation characterization module and an operation supervision module; The temperature acquisition module is used to collect the temperature information of the injection molding machine barrel, and compare the collected temperature information with the corresponding temperature threshold of the cooling or heating of the injection molding machine barrel to complete the regulation of the injection molding temperature of the injection molding machine barrel; The temperature control module is used to obtain the adjustment deviation time and adjustment deviation value for cooling or heating in the injection molding machine control process during temperature control, and obtain the adjustment time proportion and adjustment control deviation ratio in the injection molding machine control process according to the adjustment deviation time and adjustment deviation value, and obtain the adjustment deviation table value of the injection molding machine based on the processing of the adjustment time proportion and the adjustment control deviation ratio; The adjustment analysis module completes the single adjustment state identification of the injection molding machine barrel temperature based on the adjustment abnormality table value of the injection molding machine. The adjustment state includes the adjustment process failure and the adjustment process qualification. The control characterization module obtains the characterization state data of the temperature regulation of the injection molding machine barrel within a cycle based on the single adjustment state of the injection molding machine barrel temperature, and obtains the adjustment control value of the injection molding machine barrel within the monitoring cycle based on the characterization state data; The adjustment control inspection value is compared with the adjustment control inspection threshold to obtain the control effect good signal and control effect bad signal of the injection molding machine barrel; The operation supervision module is used to process the adjustment behavior data of the injection molding machine barrel during the monitoring period according to the control effect abnormality signal to obtain the operation inspection value of the injection molding machine equipment, and complete the injection molding machine status monitoring based on the operation inspection value of the injection molding machine equipment.

[0026] The above formulas are all dimensionless and numerical calculations. The formula is a formula obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formula are set by technicians in this field according to actual conditions. The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can understand and use the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A method for monitoring a heating system of an injection molding machine, characterized in that: The steps include: Collect the temperature information of the injection molding machine barrel, and compare the collected temperature information with the corresponding temperature threshold of the injection molding machine barrel cooling or heating to complete the injection molding temperature control of the injection molding machine barrel; In temperature control, the adjustment deviation time and adjustment deviation value for cooling or heating in the injection molding machine control process are obtained, and the adjustment time proportion and adjustment control deviation ratio in the injection molding machine control process are obtained according to the adjustment deviation time and adjustment deviation value, and the adjustment deviation table value of the injection molding machine is obtained based on the processing of the adjustment time proportion and the adjustment control deviation ratio; Based on the adjustment abnormality table value of the injection molding machine, the single adjustment state identification of the injection molding machine barrel temperature is completed, and the adjustment state includes the adjustment process failure and the adjustment process qualification; Based on the single adjustment state of the injection molding machine barrel temperature, the characterization state data of the injection molding machine barrel temperature adjustment is obtained within the cycle, and the adjustment control value of the injection molding machine barrel within the monitoring cycle is obtained based on the characterization state data; The adjustment control inspection value is compared with the adjustment control inspection threshold to obtain the control effect good signal and control effect bad signal of the injection molding machine barrel; According to the control effect abnormality signal, the adjustment behavior data of the injection molding machine barrel within the monitoring period is processed to obtain the operation inspection value of the injection molding machine equipment, and the injection molding machine status monitoring is completed based on the operation inspection value of the injection molding machine equipment.

2. The method for monitoring a heating system of an injection molding machine according to claim 1, characterized in that: The process of obtaining the proportion during adjustment is as follows: When the temperature of the injection molding machine barrel deviates from the set temperature of the injection molding machine barrel; Obtain the actual adjustment time required for the corresponding adjustment of the injection molding machine barrel temperature deviation; The deviation value of the actual adjustment duration compared to the corresponding target calibration duration is recorded as the adjustment deviation duration, and the ratio of the adjustment deviation duration to the target calibration duration is recorded as the adjustment time ratio.

3. The method for monitoring a heating system of an injection molding machine according to claim 2, characterized in that: The process of obtaining the adjustment bias ratio is as follows: When the temperature of the injection molding machine barrel deviates from the set temperature of the injection molding machine barrel; Obtain the actual control amount required for the corresponding adjustment of the injection molding machine barrel temperature deviation; The deviation value of the actual control amount compared to the corresponding target control amount is recorded as the control deviation value, and the ratio of the control deviation value to the target control amount is recorded as the control deviation ratio.

4. The method for monitoring a heating system of an injection molding machine according to claim 1, characterized in that: Compare the reconciliation table value with the corresponding preset reconciliation table threshold: If the adjustment abnormal table value is greater than or equal to the preset adjustment abnormal table threshold, the corresponding adjustment process is judged to be unqualified; If the adjustment error value is less than the preset adjustment error threshold, the corresponding adjustment process is judged to be qualified.

5. The method for monitoring a heating system of an injection molding machine according to claim 4, characterized in that: The characterization status data of the injection molding machine barrel temperature regulation include the regulation inspection value, regulation non-standard difference ratio and regulation abnormal condition value; The adjustment check value is recorded as QS; The adjusted non-standard difference ratio is recorded as SP; The adjustment abnormality value is recorded as QP; By formula The adjustment control value QY is calculated; If the control value QY exceeds the preset control threshold, a control error signal is generated; If the control value QY does not exceed the preset control threshold, a control effectiveness signal is generated.

6. The method for monitoring a heating system of an injection molding machine according to claim 5, characterized in that: The process of obtaining the adjustment check value is as follows: The number of times the adjustment process of the injection molding machine barrel fails to meet the standards during the monitoring period is obtained and recorded as the abnormal adjustment detection value; The total number of adjustment processes for the barrel of the injection molding machine during the monitoring period is obtained and recorded as the adjustment detection value, and the abnormal adjustment detection value is compared with the adjustment detection value to obtain the abnormal adjustment detection ratio; The process of obtaining the adjustment abnormality value is as follows: The adjustment error table value of each corresponding adjustment process is calculated by ratio with the corresponding preset adjustment error table threshold to obtain the adjustment error percentage value.

7. The method for monitoring a heating system of an injection molding machine according to claim 6, characterized in that: The process of adjusting the non-standard difference ratio is as follows: Obtain the adjustment deviation table value for each unqualified adjustment process of the injection molding machine barrel during the monitoring period, sum and average the adjustment deviation table values ​​corresponding to all unqualified adjustment processes during the monitoring period, and obtain the adjustment non-standard deviation table value; Obtain the adjustment deviation table value for each qualified adjustment process of the injection molding machine barrel during the monitoring period, sum and average the adjustment deviation table values ​​corresponding to all qualified adjustment processes during the monitoring period, and obtain the adjustment positive standard deviation table value; Calculate the difference between the adjusted non-standard deviation table value and the adjusted positive standard deviation table value to obtain the adjusted non-standard deviation value; Calculate the ratio of the adjusted non-standard difference to the adjusted positive standard difference table value to obtain the adjusted non-standard difference ratio.

8. The method for monitoring a heating system of an injection molding machine according to claim 1, characterized in that: The adjustment behavior data of the injection molding machine barrel during the monitoring period include adjustment frequency analysis value, difference interval detection value and adjustment difference square value; By formula Calculate the adjustment frequency analysis value YR, the different isolation inspection value YF and the adjustment different square value RF to obtain the operation inspection value YL of the injection molding machine equipment, where a1, a2 and a3 are all preset proportional coefficients; If the operation inspection value YL exceeds the preset operation inspection threshold, the corresponding equipment will be marked as a re-controlled equipment; If the operation inspection value YL does not exceed the preset operation inspection threshold, the corresponding equipment will be marked as lightly controlled equipment.

9. The method for monitoring a heating system of an injection molding machine according to claim 8, characterized in that: The process of obtaining the adjusted heteroscedastic value is as follows: Obtain the adjustment error table value corresponding to each adjustment of the injection molding machine barrel during the cooling or heating process, and integrate all the adjustment error table values ​​to obtain an adjustment error table value group; According to the variance calculation formula, the adjusted variance table value group is processed to obtain the adjusted variance table variance; The adjusted variance is multiplied by the adjusted nonstandard deviation ratio to obtain the adjusted variance value.

10. A monitoring system for a heating system of an injection molding machine, characterized in that: It includes temperature acquisition module, temperature regulation module, regulation analysis module, regulation characterization module and operation supervision module; The temperature acquisition module is used to collect the temperature information of the injection molding machine barrel, and compare the collected temperature information with the corresponding temperature threshold of the cooling or heating of the injection molding machine barrel to complete the regulation of the injection molding temperature of the injection molding machine barrel; The temperature control module is used to obtain the adjustment deviation time and adjustment deviation value for cooling or heating in the injection molding machine control process during temperature control, and obtain the adjustment time proportion and adjustment control deviation ratio in the injection molding machine control process according to the adjustment deviation time and adjustment deviation value, and obtain the adjustment deviation table value of the injection molding machine based on the processing of the adjustment time proportion and the adjustment control deviation ratio; The adjustment analysis module completes the single adjustment state identification of the injection molding machine barrel temperature based on the adjustment abnormality table value of the injection molding machine. The adjustment state includes the adjustment process failure and the adjustment process qualification. The control characterization module obtains the characterization state data of the temperature regulation of the injection molding machine barrel within a cycle based on the single adjustment state of the injection molding machine barrel temperature, and obtains the adjustment control value of the injection molding machine barrel within the monitoring cycle based on the characterization state data; The adjustment control inspection value is compared with the adjustment control inspection threshold to obtain the control effect good signal and control effect bad signal of the injection molding machine barrel; The operation supervision module is used to process the adjustment behavior data of the injection molding machine barrel during the monitoring period according to the control effect abnormality signal to obtain the operation inspection value of the injection molding machine equipment, and complete the injection molding machine status monitoring based on the operation inspection value of the injection molding machine equipment.

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