Monitoring Method and System for Heating System of Injection Molding Machine

Abstract

The present invention belongs to the technical field of injection molding machines, and specifically relates to a monitoring method and system for the heating system of an injection molding machine. It obtains the adjustment deviation duration and adjustment deviation value for cooling or heating during the regulation process of the injection molding machine, and obtains the adjustment time occupancy ratio and adjustment control deviation ratio during the regulation process of the injection molding machine based on the adjustment deviation duration and adjustment deviation value, and further obtains the adjustment abnormal value of the injection molding machine; based on the adjustment abnormal value of the injection molding machine, it completes the identification of the single adjustment state of the barrel temperature of the injection molding machine, and obtains the adjustment control inspection value by acquiring the characterization state data of the barrel temperature adjustment of the injection molding machine within a cycle; compares the adjustment control inspection value with the adjustment control inspection threshold to obtain the control excellent signal and control abnormal signal of the barrel of the injection molding machine; processes the adjustment behavior data of the barrel of the injection molding machine within the monitoring cycle according to the control abnormal signal to obtain the operation pipe inspection value of the injection molding machine equipment, and completes the state monitoring of the injection molding machine based on the operation pipe inspection value of the injection molding machine equipment, with strong applicability.

Description

Technical Field

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

[0002] An injection molding machine is the main molding equipment for making various shaped plastic products from thermoplastic or thermosetting plastics using plastic molding dies. According to different classification criteria, there can be various types. For example, according to the form of the clamping mechanism, it can be divided into direct pressure type, toggle 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 an injection molding machine is to make the temperature of the barrel and 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, thus meeting the requirements of injection molding. In the prior art, during the heating process of the injection molding machine barrel by the heating system of the injection molding machine, there is a lack of refined identification of the heating or cooling degree and frequency of the injection molding machine barrel, and it is impossible to effectively control the temperature control quality of the injection molding machine barrel, 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 in the prior art that it is difficult to simultaneously control the temperature of two or more sets of equipment, which is not conducive to energy conservation and environmental protection, and it is impossible to reasonably evaluate the accuracy of temperature control execution for the injection molding machine barrel, with low intelligence level and great supervision difficulty.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A monitoring method and system for the heating system of an injection molding machine, including the following steps:

[0007] Collect the temperature information of the injection molding machine barrel, and compare and process the collected temperature information with the corresponding temperature threshold for refrigeration or heating of the injection molding machine barrel to complete the temperature control of the injection molding temperature of the injection molding machine barrel;

[0008] During the temperature control, obtain the adjustment deviation duration and adjustment deviation value for refrigeration or heating during the adjustment process of the injection molding machine, and obtain the adjustment time ratio and adjustment control deviation ratio during the adjustment process of the injection molding machine based on the adjustment deviation duration and adjustment deviation value. Based on the processing of the adjustment time ratio and adjustment control deviation ratio, obtain the adjustment abnormal value of the injection molding machine;

[0009] Based on the adjustment abnormal value of the injection molding machine, complete the identification of the single - time adjustment state of the temperature of the injection molding machine barrel, and the adjustment state includes unqualified adjustment process and qualified adjustment process;

[0010] Based on the single - adjustment state of the injection - molding machine barrel temperature, obtain the characterization state data of the injection - molding machine barrel temperature adjustment within a cycle, and obtain the adjustment control and inspection value of the injection - molding machine barrel within the monitoring cycle based on the characterization state data;

[0011] Compare the adjustment control and inspection value with the adjustment control and inspection threshold to obtain the control - effect - excellent signal and control - effect - different signal of the injection - molding machine barrel;

[0012] Process the adjustment behavior data of the injection - molding machine barrel within the monitoring cycle according to the control - effect - different signal to obtain the operation management and inspection value of the injection - molding machine equipment, and complete the state monitoring of the injection - molding machine based on the operation management and inspection value of the injection - molding machine equipment.

[0013] As a further solution of the present invention: The process of obtaining the adjustment time ratio is as follows:

[0014] When the temperature of the injection - molding machine barrel deviates from the set temperature of the injection - molding machine barrel;

[0015] Obtain the actual adjustment duration required for the adjustment of the temperature deviation of the injection - molding machine barrel from the corresponding required adjustment;

[0016] Record the deviation value of the actual adjustment duration from the corresponding target calibration duration as the adjustment deviation duration, and record the ratio of the adjustment deviation duration to the target calibration duration as the adjustment time ratio.

[0017] As a further solution of the present invention: The process of obtaining the adjustment control deviation ratio is as follows:

[0018] When the temperature of the injection - molding machine barrel deviates from the set temperature of the injection - molding machine barrel;

[0019] Obtain the actual control amount required for the adjustment of the temperature deviation of the injection - molding machine barrel from the corresponding required adjustment;

[0020] Record the deviation value of the actual control amount from the corresponding target control amount as the adjustment deviation amount value, and record the ratio of the adjustment deviation amount value to the target control amount as the adjustment control deviation ratio.

[0021] As a further solution of the present invention: Compare the adjustment abnormal value with the corresponding preset adjustment abnormal threshold:

[0022] If the adjustment abnormal value is greater than or equal to the preset adjustment abnormal threshold, it is determined that the corresponding adjustment process is unqualified;

[0023] If the adjustment abnormal value is less than the preset adjustment abnormal threshold, it is determined that the corresponding adjustment process is qualified.

[0024] As a further solution of the present invention: The characterization state data of the injection - molding machine barrel temperature adjustment includes the adjustment inspection ratio, adjustment non - standard deviation ratio, and adjustment abnormal condition value;

[0025] Record the adjustment inspection ratio as QS;

[0026] Record the adjusted non-standard deviation ratio as SP;

[0027] Record the adjusted abnormal value as QP;

[0028] Through the formula Calculate the adjusted control and inspection value QY;

[0029] If the adjusted control and inspection value QY exceeds the preset adjusted control and inspection threshold, generate a control effect abnormal signal;

[0030] If the adjusted control and inspection value QY does not exceed the preset adjusted control and inspection threshold, generate a control effect excellent signal.

[0031] As a further solution of the present invention: The process of obtaining the adjusted inspection occupancy value is as follows:

[0032] Obtain the number of occurrences of unqualified adjustment processes for the injection molding machine barrel during the monitoring period and record it as the adjustment abnormality detection value;

[0033] Obtain the total number of adjustment processes for the injection molding machine barrel during the monitoring period and record it as the adjustment detection value, and calculate the ratio of the adjustment abnormality detection value to the adjustment detection value to obtain the adjustment abnormality occupancy value;

[0034] The process of obtaining the adjusted abnormal value is as follows:

[0035] Each time, calculate the ratio of the adjusted abnormal table value of the corresponding adjustment process to the corresponding preset adjusted abnormal table threshold to obtain the adjusted abnormal occupancy value.

[0036] As a further solution of the present invention: The process of obtaining the adjusted non-standard deviation ratio is as follows:

[0037] Obtain the adjusted abnormal table value when each adjustment process for the injection molding machine barrel is unqualified during the monitoring period, sum up and take the average value of the adjusted abnormal table values corresponding to all unqualified adjustment processes during the monitoring period to obtain the adjusted non-standard abnormal table value;

[0038] Obtain the adjusted abnormal table value when each adjustment process for the injection molding machine barrel is qualified during the monitoring period, sum up and take the average value of the adjusted abnormal table values corresponding to all qualified adjustment processes during the monitoring period to obtain the adjusted positive standard abnormal table value;

[0039] Calculate the difference between the adjusted non-standard abnormal table value and the adjusted positive standard abnormal table value to obtain the adjusted non-standard difference value;

[0040] Calculate the ratio of the adjusted non-standard difference value to the adjusted positive standard abnormal table value to obtain the adjusted non-standard deviation ratio.

[0041] As a further solution of the present invention: The adjustment behavior data of the injection molding machine barrel during the monitoring period includes the adjustment frequency analysis value, the abnormal interval inspection value, and the adjusted abnormal variance value;

[0042] Through the formula Calculate the operation pipe inspection value YL of the injection molding machine equipment by performing numerical calculations on the adjusted frequency analysis value YR, the different interval inspection condition value YF, and the adjusted different direction value RF, where a1, a2, and a3 are all preset proportionality coefficients;

[0043] If the operation pipe inspection value YL exceeds the preset operation pipe inspection threshold, mark the corresponding equipment as a heavily controlled equipment;

[0044] If the operation pipe inspection value YL does not exceed the preset operation pipe inspection threshold, mark the corresponding equipment as a lightly controlled equipment.

[0045] As a further solution of the present invention: The process of obtaining the adjusted different direction value is as follows:

[0046] Obtain the adjusted different surface value corresponding to each regulation during the cooling or heating process of the injection molding machine barrel, and integrate all the adjusted different surface values to obtain a group of adjusted different surface values;

[0047] Process the group of adjusted different surface values according to the variance calculation formula to obtain the adjusted different surface variance;

[0048] Multiply the adjusted different surface variance by the adjusted non-standard deviation ratio to obtain the adjusted different direction value.

[0049] As a further solution of the present invention: A monitoring system for an injection molding machine heating system includes a temperature acquisition module, a temperature adjustment module, an adjustment analysis module, a regulation characterization module, and an operation supervision module;

[0050] The temperature acquisition module is used to collect the temperature information of the injection molding machine barrel, and compare and process the collected temperature information with the corresponding temperature threshold for cooling or heating of the injection molding machine barrel to complete the regulation of the injection temperature of the injection molding machine barrel;

[0051] The temperature adjustment module is used to obtain the adjustment deviation duration and adjustment deviation value for cooling or heating during the temperature regulation process of the injection molding machine, and obtain the adjustment time occupancy ratio and adjustment control deviation ratio during the regulation process of the injection molding machine based on the adjustment deviation duration and adjustment deviation value, and obtain the adjusted different surface value of the injection molding machine based on the processing of the adjustment time occupancy ratio and adjustment control deviation ratio;

[0052] The adjustment analysis module completes the recognition of the single - time adjustment state of the injection molding machine barrel temperature based on the adjusted different surface value of the injection molding machine, and the adjustment state includes unqualified adjustment process and qualified adjustment process;

[0053] The regulation characterization module obtains the characterization state data of the injection molding machine barrel temperature regulation within a cycle based on the single - time adjustment state of the injection molding machine barrel temperature, and obtains the adjustment control inspection value of the injection molding machine barrel within the monitoring cycle based on the characterization state data;

[0054] Compare the adjusted control inspection value with the adjusted control inspection threshold to obtain the control effectiveness excellent signal and the control effectiveness abnormal signal of the injection molding machine barrel;

[0055] 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 effectiveness abnormal signal to obtain the operation management and inspection value of the injection molding machine equipment, and complete the state monitoring of the injection molding machine based on the operation management and inspection value of the injection molding machine equipment.

[0056] Compared with the prior art, the beneficial effects of the present invention are:

[0057] 1. The present invention receives and processes temperature signals through the temperature acquisition module to control the operation of the refrigeration adjustment unit and the heating adjustment unit, can effectively control the refrigeration and heating of the injection molding machine barrel, achieve precise control of the temperature of the injection molding machine barrel, and during the control process of the temperature of the injection molding machine barrel, collect the actual adjustment duration of the corresponding adjustment process and the actual adjustment amount of the corresponding adjustment process, and then obtain the adjustment time ratio and the adjustment control deviation ratio through the actual adjustment duration and the actual adjustment amount, and obtain the adjustment abnormal value in each temperature control adjustment process of the injection molding machine barrel according to the adjustment time ratio and the adjustment control deviation ratio, so as to complete the state and accuracy of each temperature control adjustment of the injection molding machine barrel;

[0058] 2. The present invention identifies the adjustment state of the injection molding machine barrel during the monitoring period based on the adjustment abnormal value obtained from each temperature control adjustment of the injection molding machine barrel, that is, by obtaining the adjustment inspection occupancy value, the adjustment non-standard deviation ratio and the adjustment abnormal condition value of the temperature control adjustment of the injection molding machine barrel during the monitoring period, and obtaining the adjustment control inspection value through the adjustment inspection occupancy value, the adjustment non-standard deviation ratio and the adjustment abnormal condition value, so as to realize the identification of the temperature control adjustment performance of the injection molding machine from the number of unqualified temperature control adjustments and the deviation degree of the temperature control adjustment;

[0059] 3. In the present invention, the control effectiveness measurement unit analyzes the refrigeration or heating control performance of the temperature acquisition module for the injection molding machine barrel during the monitoring period, generates a control effectiveness abnormal signal or a control effectiveness excellent signal through the analysis, and detects and evaluates the temperature control adjustment condition of the injection molding machine barrel when the control effectiveness abnormal signal is generated, that is, by obtaining the total number of temperature control adjustments for the injection molding machine barrel during the monitoring period, the interval duration of the temperature control adjustment and the fluctuation state during each temperature control adjustment process to complete the identification of the abnormal degree of the injection molding machine, and analyzes and marks the corresponding equipment as a heavily managed equipment or a weakly managed equipment, which is beneficial 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

[0060] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings;

[0061] Figure 1 It is a flowchart of a monitoring method for an injection molding machine heating system according to an embodiment of the present invention;

[0062] Figure 2 It is a flowchart showing the adjustment performance of the barrel of an injection molding machine in the monitoring method of the heating system of an injection molding machine according to an embodiment of the present invention;

[0063] Figure 3 It is a block diagram of the program of the monitoring system of the heating system of an injection molding machine according to an embodiment of the present invention. Specific embodiments

[0064] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0065] Embodiment 1: As Figure 1 shown, a monitoring method for the heating system of an injection molding machine proposed by the present invention includes the following steps:

[0066] Collect the temperature information of the barrel of the injection molding machine, and compare and process the collected temperature information with the corresponding temperature threshold for cooling or heating of the barrel of the injection molding machine to complete the regulation of the injection temperature of the barrel of the injection molding machine;

[0067] During the temperature regulation, obtain the adjustment deviation duration and adjustment deviation value for cooling or heating during the regulation process of the injection molding machine, and obtain the adjustment time occupancy ratio and adjustment control deviation ratio during the regulation process of the injection molding machine based on the adjustment deviation duration and adjustment deviation value. Based on the processing of the adjustment time occupancy ratio and adjustment control deviation ratio, obtain the adjustment abnormal value of the injection molding machine;

[0068] Based on the adjustment abnormal value of the injection molding machine, complete the recognition of the single - time adjustment state of the temperature of the barrel of the injection molding machine. The adjustment state includes unqualified adjustment process and qualified adjustment process;

[0069] Based on the single - time adjustment state of the temperature of the barrel of the injection molding machine, obtain the characterization state data of the temperature adjustment of the barrel of the injection molding machine within the cycle, and obtain the adjustment control inspection value of the barrel of the injection molding machine within the monitoring cycle based on the characterization state data;

[0070] Compare and process the adjustment control inspection value with the adjustment control inspection threshold to obtain the control effect excellent signal and control effect abnormal signal of the barrel of the injection molding machine;

[0071] According to the control effect abnormal signal, process the adjustment behavior data of the barrel of the injection molding machine within the monitoring cycle to obtain the operation management inspection value of the injection molding machine equipment, and complete the state monitoring of the injection molding machine based on the operation management inspection value of the injection molding machine equipment.

[0072] Specifically, the temperature information of the injection molding machine barrel is collected in real time by a temperature sensor, and the collected temperature information and the cooling or heating control information for the injection molding machine barrel are sent to the background management terminal;

[0073] It should be noted that during the operation of the injection molding machine, in order to make the processing material reach the optimal melting temperature, the heating adjustment unit needs to raise the temperature of the injection molding machine barrel to ensure that the material in the injection molding machine barrel is fully plasticized. At the same time, in order to prevent the processing material from melting at the feeding port of the barrel, the refrigeration adjustment unit needs to cool down the injection molding machine barrel to prevent the raw material from melting at the feeding port and causing abnormal feeding;

[0074] The control system in the present invention can control the temperature of the injection molding machine barrel simultaneously and independently, and adjust the cooling or heating conditions according to needs to achieve precise temperature control and energy efficiency optimization.

[0075] 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 set for the injection molding machine according to the corresponding injection molding material), and based on this, the operation of the refrigeration adjustment unit and the heating adjustment unit is automatically switched;

[0076] When the temperature of the injection molding machine barrel is higher than the set upper temperature 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 lower temperature limit, the temperature acquisition module starts the heating adjustment unit to achieve the heating effect.

[0077] The present invention controls the operation of the refrigeration adjustment unit and the heating adjustment unit by receiving and processing temperature signals through the temperature acquisition module, which can effectively control the cooling and heating of the injection molding machine barrel and achieve precise control of the temperature of the injection molding machine barrel.

[0078] 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 within the monitoring period. By analyzing, a control effect difference signal or a control effect excellent signal is generated. When the control effect difference signal is generated, a corresponding warning is issued so that the staff can timely conduct cause investigation and analysis, optimize and upgrade the control components, or check and repair the injection molding machine barrel to ensure the subsequent cooling or heating control effect of the injection molding machine barrel and reduce the temperature control difficulty during the operation of the injection molding machine;

[0079] The specific operation process is as follows:

[0080] When it is determined that the temperature of the injection molding machine barrel is higher than the set upper temperature limit or lower than the set lower temperature limit, the adjustment rationality is analyzed one by one to determine whether the adjustment process of the temperature acquisition module for the injection molding machine barrel is qualified. Specifically:

[0081] When it is judged that the temperature of the injection molding machine barrel is higher than the set upper temperature limit, the deviation value of the temperature of the injection molding machine barrel compared with the set upper temperature limit is marked as the temperature correction and reduction value. Several groups of preset temperature correction and reduction value ranges are preset in advance, and each group of preset temperature correction and reduction value ranges corresponds to a group of standard correction and reduction time lengths and standard refrigerating capacities respectively; the temperature correction and reduction value is compared with all the preset temperature correction and reduction value ranges one by one, and the standard correction and reduction time length and standard refrigerating capacity corresponding to the preset temperature correction and reduction value range containing the temperature correction and reduction value are marked as the target correction and reduction time length and the target refrigerating capacity respectively;

[0082] When it is judged that the temperature of the injection molding machine barrel is lower than the set lower temperature limit, the deviation value of the temperature of the injection molding machine barrel compared with the set lower temperature limit is marked as the temperature correction and increase value. Several groups of preset temperature correction and increase value ranges are preset in advance, and each group of preset temperature correction and increase value ranges corresponds to a group of standard correction and increase time lengths and standard heating capacities respectively; the temperature correction and increase value is compared with all the preset temperature correction and increase value ranges one by one, and the standard correction and increase time length and standard heating capacity corresponding to the preset temperature correction and increase value range containing the temperature correction and increase value are marked as the target correction and increase time length and the target heating capacity respectively;

[0083] And the actual adjustment time length for the corresponding adjustment process is collected, and the actual control amount (actual refrigerating capacity or actual heating capacity) of the corresponding adjustment process is collected;

[0084] The deviation value of the actual adjustment time length compared with the corresponding target correction and reduction time length or target correction and increase time length is recorded as the adjustment deviation time length, and the ratio of the adjustment deviation time length to the target calibration time length is recorded as the adjustment time proportion;

[0085] Among them, when performing refrigeration adjustment on the injection molding machine barrel, the target calibration time length is the target correction and reduction time length; when performing heating adjustment on the injection molding machine barrel, the target calibration time length is the target correction and increase time length;

[0086] The deviation value of the actual refrigerating capacity or actual heating capacity compared with the corresponding target refrigerating capacity or target heating capacity is recorded as the adjustment deviation amount value, and the ratio of the adjustment deviation amount value to the target control amount is recorded as the adjustment control deviation ratio;

[0087] Among them, when performing refrigeration adjustment on the injection molding machine barrel, the target control amount is the target refrigerating capacity; when performing heating adjustment on the injection molding machine barrel, the target control amount is the target heating capacity.

[0088] Through the formula The adjustment time proportion TY and the adjustment control deviation ratio TK are numerically calculated to obtain the adjustment difference value TN, where wq1 and wq2 are preset proportionality coefficients, and the values of wq1 and wq2 are both positive numbers;

[0089] As can be seen from the above formula for obtaining the adjusted abnormal value TN, the larger the value of the adjusted abnormal value TN, that is, the larger the corresponding obtained adjustment time ratio and adjustment control deviation ratio, it indicates that during the cooling or heating process of the injection molding machine barrel, the deviation between the actual adjustment duration and the actual cooling capacity (or actual heating capacity) compared to the target adjustment duration and the target cooling capacity (or target heating capacity) is larger, indicating that the adjustment performance for the corresponding adjustment process is worse;

[0090] Compare the adjusted abnormal value TN with the corresponding preset adjusted abnormal threshold value. If the adjusted abnormal value TN is greater than or equal to the preset adjusted abnormal threshold value, it indicates that the adjustment performance for the corresponding adjustment process is poor, then determine that the corresponding adjustment process is unqualified. On the contrary, if the adjusted abnormal value TN is less than the preset adjusted abnormal threshold value, then determine that the corresponding adjustment process is qualified;

[0091] Obtain the occurrence times of unqualified adjustment processes for the injection molding machine barrel during the monitoring period and the total number of adjustment processes, and mark them as the adjusted difference detection value and the adjustment detection value respectively, and mark the ratio of the adjusted difference detection value to the adjustment detection value as the adjusted difference detection ratio;

[0092] Obtain the adjusted abnormal value during each unqualified adjustment process for the injection molding machine barrel during the monitoring period, sum up and take the average value of the adjusted abnormal values corresponding to all unqualified adjustment processes during the monitoring period to obtain the adjusted non-standard abnormal value;

[0093] Obtain the adjusted abnormal value during each qualified adjustment process for the injection molding machine barrel during the monitoring period, sum up and take the average value of the adjusted abnormal values corresponding to all qualified adjustment processes during the monitoring period to obtain the adjusted standard abnormal value;

[0094] Calculate the difference between the adjusted non-standard abnormal value and the adjusted standard abnormal value to obtain the adjusted non-standard difference;

[0095] Calculate the ratio of the adjusted non-standard difference to the adjusted standard abnormal value to obtain the adjusted non-standard difference ratio;

[0096] And mark the ratio of the adjusted abnormal value of each corresponding adjustment process to the corresponding preset adjusted abnormal threshold value as the adjusted abnormal ratio, and calculate the average value of all adjusted abnormal ratios for the injection molding machine barrel during the monitoring period to obtain the adjusted abnormal condition value;

[0097] Through the formula Perform numerical calculation on the adjustment detection ratio QS, the adjusted non-standard difference ratio SP, and the adjusted abnormal condition value QP to obtain the adjustment control detection value QY;

[0098] As can be seen from the above formula for obtaining the adjustment control inspection value, the more times the adjustment process of the injection molding machine barrel is unqualified, the larger the corresponding adjustment difference inspection value; the larger the difference between the adjustment difference table value when the adjustment process of the injection molding machine barrel is unqualified and the adjustment difference table value when the adjustment process of the injection molding machine barrel is qualified, the larger the corresponding adjustment non-standard deviation ratio; the larger the overall adjustment difference table value of the injection molding machine barrel within the monitoring period, the larger the obtained adjustment abnormal condition value, and further the larger the numerical value of the adjustment control inspection value QY, indicating that the overall temperature control adjustment performance of the injection molding machine barrel within the monitoring period is worse;

[0099] As Figure 2 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 overall adjustment performance of the injection molding machine barrel within the monitoring period is poor, and a control effect abnormal signal is generated; if the adjustment control inspection value QY does not exceed the preset adjustment control inspection threshold, it indicates that the overall adjustment performance of the injection molding machine barrel within the monitoring period is good, and a control effect excellent signal is generated;

[0100] The control effect excellent signal indicates that the injection molding machine is operating normally within the monitoring period;

[0101] The control effect abnormal signal indicates that the injection molding machine is operating abnormally within the monitoring period;

[0102] It should be noted that the monitoring period is set by the staff according to experience, including but not limited to 1 day, 3 days or 10 days;

[0103] At the same time, the monitoring period can also be divided according to different materials during the injection molding of the injection molding machine.

[0104] Embodiment 3: The difference between this embodiment and Embodiment 1 and Embodiment 2 is that based on the control effect abnormal signal, the temperature control adjustment status of the injection molding machine barrel is detected and evaluated. By completing the marking of the abnormal state level of the injection molding machine equipment and sending the marking information of the injection molding machine equipment to the background management terminal, the background management terminal issues a corresponding warning when receiving the marking level of the corresponding injection molding machine equipment to remind the staff to strengthen the maintenance of the operation status of the injection molding machine equipment and check and repair the injection molding machine equipment as needed, so as to ensure the subsequent stable operation of the injection molding machine equipment and the injection quality of the product;

[0105] The specific analysis process of the equipment operation and management unit is as follows:

[0106] Collect the total working hours of the injection molding machine barrel within the monitoring period, mark the total number of times of temperature control adjustment for the injection molding machine barrel within the monitoring period as the frequency modulation value, and mark the ratio of the frequency modulation value to the total working hours as the adjustment frequency analysis value;

[0107] The moment for adjusting the injection molding machine barrel is collected and marked as the start adjustment moment, and the interval duration between two adjacent start adjustment moments is marked as the adjustment interval duration;

[0108] The adjustment interval duration is numerically compared with a preset adjustment interval duration threshold. If the adjustment interval duration does not exceed the preset adjustment interval duration threshold, the corresponding adjustment interval duration is marked as an abnormal interval duration; the number of abnormal interval durations of the injection molding machine barrel within the monitoring period is obtained and the ratio of the number of abnormal interval durations to the total working duration is marked as the abnormal interval inspection value;

[0109] The adjustment abnormal value corresponding to each regulation during the cooling or heating process of the injection molding machine barrel is obtained, and all the adjustment abnormal values are integrated to obtain an adjustment abnormal value group;

[0110] The adjustment abnormal value group is processed according to the variance calculation formula to obtain the adjustment abnormal variance;

[0111] The adjustment abnormal variance is multiplied by the adjustment non-standard deviation ratio to obtain the adjustment abnormal variance value;

[0112] Through the formula The operation pipe inspection value YL of the injection molding machine equipment is obtained by numerically calculating the adjustment frequency analysis value YR, the abnormal interval inspection value YF, and the adjustment abnormal variance value RF, where a1, a2, and a3 are all preset proportionality coefficients, and a1, a2, and a3 are all greater than zero;

[0113] It can be seen from the formula for obtaining the operation pipe inspection value of the injection molding machine equipment above that in the case of poor regulation state of the injection molding machine, the more times of temperature control adjustment of the corresponding injection molding machine barrel, the greater the temperature fluctuation of the injection molding machine barrel; the more the number of abnormal interval durations, the more mutation states of the injection molding machine barrel; the greater the adjustment abnormal variance value, the greater the deviation degree (time and regulation amount) of each adjustment of the injection molding machine barrel. Furthermore, the larger the value of the operation pipe inspection value YL, the greater the abnormal degree of the operation of the injection molding machine barrel within the monitoring period;

[0114] The operation pipe inspection value YL is numerically compared with a preset operation pipe inspection threshold. If the operation pipe inspection value YL exceeds the preset operation pipe inspection threshold, indicating that the comprehensive operation management difficulty of the injection molding machine barrel within the monitoring period is relatively large, the corresponding equipment is marked as a heavily managed and controlled equipment; if the operation pipe inspection value YL does not exceed the preset operation pipe inspection threshold, indicating that the comprehensive operation management difficulty of the injection molding machine barrel within the monitoring period is relatively small, the corresponding equipment is marked as a lightly managed and controlled equipment.

[0115] Example 4, as Figure 3 shown, a monitoring system for an injection molding machine heating system proposed by the present invention includes a temperature acquisition module, a temperature adjustment module, an adjustment analysis module, a regulation characterization module, and an operation supervision module;

[0116] The temperature acquisition module is used to acquire the temperature information of the injection molding machine barrel, and compare and process the acquired temperature information with the corresponding temperature thresholds for cooling or heating of the injection molding machine barrel, so as to complete the regulation of the injection temperature of the injection molding machine barrel;

[0117] The temperature adjustment module is used in the temperature regulation to obtain the adjustment deviation duration and adjustment deviation value for cooling or heating during the regulation process of the injection molding machine, and obtain the adjustment time ratio and adjustment control deviation ratio during the regulation process of the injection molding machine based on the adjustment deviation duration and adjustment deviation value, and obtain the adjustment abnormal value of the injection molding machine based on the processing of the adjustment time ratio and adjustment control deviation ratio;

[0118] The adjustment analysis module completes the identification of the single - time adjustment state of the injection molding machine barrel temperature based on the adjustment abnormal value of the injection molding machine, and the adjustment state includes unqualified adjustment process and qualified adjustment process;

[0119] The regulation characterization module obtains the characterization state data of the injection molding machine barrel temperature adjustment within the cycle based on the single - time adjustment state of the injection molding machine barrel temperature, and obtains the adjustment control inspection value of the injection molding machine barrel within the monitoring cycle based on the characterization state data;

[0120] Compare and process the adjustment control inspection value with the adjustment control inspection threshold to obtain the control excellent signal and control abnormal signal of the injection molding machine barrel;

[0121] The operation supervision module is used to process the adjustment behavior data of the injection molding machine barrel within the monitoring cycle according to the control abnormal signal to obtain the operation management inspection value of the injection molding machine equipment, and complete the state monitoring of the injection molding machine based on the operation management inspection value of the injection molding machine equipment.

[0122] The above formulas are all dimensionless and take their numerical values for calculation. The formulas are obtained by software simulation of a large amount of collected data to get a formula closest to the actual situation. The preset parameters in the formulas are set by those skilled in the art according to the actual situation. The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not elaborate on all details, nor do they limit the invention to only the specific implementation manners. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical fields can well understand and utilize the present invention. 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; 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, where wq1 and wq2 are preset proportional coefficients; The deviation value of the actual adjustment time compared to the corresponding target calibration 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; 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; 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 characterization status data includes the adjustment detection value QS, the adjustment non-standard difference ratio SP and the adjustment abnormal condition value QP; By formula The adjustment control value QY is calculated; The ratio of the number of unqualified occurrences of the adjustment process of the injection molding machine barrel during the monitoring period to the total number of adjustment processes is the adjustment inspection value; The corresponding adjustment abnormal table values ​​when all adjustment processes fail within the monitoring period are summed and averaged to obtain the adjustment non-standard abnormal table value; The adjustment deviation table values ​​corresponding to all qualified adjustment processes within the monitoring period are summed and averaged to 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, calculate the ratio between the obtained difference and the adjusted positive standard deviation table value, and obtain the adjusted non-standard deviation ratio; The average value of the adjustment abnormality table value of each corresponding adjustment process in the monitoring period is calculated by comparing the ratio of the corresponding preset adjustment abnormality table threshold value to obtain the adjustment abnormality value; 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 in 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; The adjustment behavior data include adjustment frequency analysis value YR, heterogeneity detection value YF and adjustment heterogeneity value RF; By formula The operation inspection value YL of the injection molding machine equipment is calculated, where a1, a2, and a3 are all preset proportional coefficients; The ratio of the total number of temperature control adjustments made to the barrel of the injection molding machine during the monitoring period to the total working time of the barrel of the injection molding machine during the monitoring period is recorded as the adjustment frequency analysis value; The ratio of the number of abnormal intervals of the injection molding machine barrel in the monitoring period to the total working time is recorded as the abnormal interval detection value; The interval between two adjacent groups of adjustment start times is recorded as the adjustment interval time. If the adjustment interval time does not exceed the preset adjustment interval time threshold, the corresponding adjustment interval time is marked as the different interval time. All the adjustment deviation values ​​of the injection molding machine barrel are integrated to obtain the adjustment deviation value group, and the variance of the adjustment deviation value group is multiplied by the adjustment non-standard deviation ratio to obtain the adjustment deviation value.

2. 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.

3. The method for monitoring a heating system of an injection molding machine according to claim 2, characterized in that: 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.

4. The method for monitoring a heating system of an injection molding machine according to claim 1, characterized in that: 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.

5. A monitoring system for a heating system of an injection molding machine, characterized in that: The monitoring system is used to execute the method described in any one of claims 1 to 4 above, and 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.

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