Intelligent control method and system of injection molding machine

Abstract

The application relates to the technical field of intelligent control, and provides an intelligent control method and system of an injection molding machine, which comprises the following steps: acquiring information, operation parameters and production process information of a sub-module and setting multiple control modules; outputting historical injection molding products and historical injection molding quality, collating and synthesizing first and second production sequences; judging whether the injection molding machine control system has anti-interference capability; if yes, adjusting the operation parameters and controlling the injection molding machine through the first and second production sequences, solving the technical problem that the anti-interference capability of the injection molding machine control system is insufficient and the injection molding machine may be affected by external environmental noise and electromagnetic interference, thereby causing low injection molding process precision, realizing matching of corresponding production control sequences, judging whether the production control sequences simultaneously have software anti-interference capability and hardware anti-interference capability, guaranteeing the overall anti-interference capability of the injection molding machine control system, eliminating external environmental noise and electromagnetic interference, and thereby improving the injection molding process precision technical effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent control, and particularly relates to an intelligent control method and system of an injection molding machine. BACKGROUND

[0002] The injection molding machine is a common plastic product processing equipment, and the working principle is to heat plastic particles or powder to a molten state, then inject the molten plastic into a mold through an injector, and pressurize and cool in the mold, and finally open the mold to take out the formed plastic product.

[0003] The control of the injection molding machine is a key technical link, which determines the precision, efficiency and reliability of the injection molding process, but in the process of operating the injection molding machine, the electrical control system and the hydraulic system are involved, and at the same time, the injection molding machine control system needs to control the entire injection molding process in real time, which may be affected by external environmental noise and electromagnetic interference, and further affect the entire injection molding process.

[0004] In summary, the injection molding machine control system in the prior art has insufficient anti-interference ability, which may be affected by external environmental noise and electromagnetic interference, and further leads to the technical problem of low precision of the injection molding process. SUMMARY

[0005] The present application provides an intelligent control method and system of an injection molding machine, which aims to solve the technical problem of low precision of the injection molding process caused by the insufficient anti-interference ability of the injection molding machine control system in the prior art, which may be affected by external environmental noise and electromagnetic interference.

[0006] In view of the above problems, the embodiments of the present application provide an intelligent control method and system of an injection molding machine.

[0007] The first aspect of the application discloses an intelligent control method of an injection molding machine. The intelligent control method of the injection molding machine is applied to an injection molding machine control system, and the injection molding machine control system comprises a clock module, a keyboard and display module, a serial communication module, an intelligent temperature control module and a data storage module. The method comprises the following steps: obtaining information of N sub-modules of a target injection molding machine, wherein the N sub-modules of the target injection molding machine at least comprise an injection sub-module, a mold clamping sub-module, a hydraulic sub-module, a heating and cooling sub-module, an electric control sub-module and a safety and monitoring sub-module; obtaining real-time running parameters and production process information of the N sub-modules; setting a plurality of control modules based on the N sub-modules of the target injection molding machine and the production process information, wherein the plurality of control modules comprise a first control module, a second control module and a third control module; outputting historical injection products and historical injection quality of the target injection molding machine within a limited time range through the data storage module in the injection molding machine control system, wherein the historical injection products and the historical injection quality are in one-to-one correspondence; synthesizing a first production sequence based on the historical injection products and the historical injection quality and taking the real-time running parameters of the sub-modules as constraint information; synthesizing a second production sequence based on the historical injection products and the historical injection quality and taking control information of the plurality of control modules as constraint information; judging whether the injection molding machine control system has anti-interference capability, wherein the anti-interference capability comprises software anti-interference capability and hardware anti-interference capability, the software anti-interference capability corresponds to the first production sequence, and the hardware anti-interference capability corresponds to the second production sequence; and adjusting the real-time running parameters of the N sub-modules through the first production sequence and the second production sequence to control the target injection molding machine if the injection molding machine control system has the anti-interference capability.

[0008] In another aspect of the present application, an intelligent control system of an injection molding machine is provided, wherein the system comprises: an information acquisition module configured to acquire information of N sub-modules of a target injection molding machine, wherein the N sub-modules of the target injection molding machine at least include an injection sub-module, a mold clamping sub-module, a hydraulic sub-module, a heating and cooling sub-module, an electric control sub-module, and a safety and monitoring sub-module; an operating parameter acquisition module configured to acquire sub-module real-time operating parameters and production process information of the N sub-modules; a multi-control module setting module configured to set a multi-control module based on the N sub-modules of the target injection molding machine and the production process information, wherein the multi-control module includes a first control module, a second control module, and a third control module; a historical injection information output module configured to output historical injection products and historical injection quality of the target injection molding machine within a limited time range through a data storage module in the injection molding machine control system, wherein the historical injection products and the historical injection quality correspond to each other; a first production sequence synthesis module configured to synthesize a first production sequence by taking the sub-module real-time operating parameters as constraint information based on the historical injection products and the historical injection quality; a second production sequence synthesis module configured to synthesize a second production sequence by taking control information of the multi-control module as constraint information based on the historical injection products and the historical injection quality; an anti-interference capability judgment module configured to judge whether the injection molding machine control system has anti-interference capability, wherein the anti-interference capability includes software anti-interference capability and hardware anti-interference capability, the software anti-interference capability corresponds to the first production sequence, and the hardware anti-interference capability corresponds to the second production sequence; and an automatic control module configured to adjust sub-module real-time operating parameters of the N sub-modules by the first production sequence and the second production sequence to control the target injection molding machine if the injection molding machine control system has the anti-interference capability.

[0009] One or more technical solutions provided in the present application have at least the following technical effects or advantages:

[0010] Since the information of the sub-modules, the real-time operating parameters, and the production process information are acquired, the multi-control module is set, the historical injection products and the historical injection quality are output, the first and second production sequences are synthesized, and it is judged whether the injection molding machine control system has the anti-interference capability, if it has, the sub-module real-time operating parameters are adjusted and the target injection molding machine is controlled by the first and second production sequences, the corresponding production control sequences are matched, it is judged whether the production control sequences have the software anti-interference capability and the hardware anti-interference capability at the same time, the overall anti-interference capability of the injection molding machine control system is ensured, the external environmental noise and electromagnetic interference are excluded, and the technical effect of improving the injection molding process precision is achieved.

[0011] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clear and understandable, and to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are provided. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 A possible flowchart of an intelligent control method of an injection molding machine is provided for the embodiments of the present application.

[0013] Figure 2 A possible flowchart of the first, second and third control module settings in the intelligent control method of the injection molding machine is provided for the embodiments of the present application.

[0014] Figure 3 A possible flowchart of obtaining the real-time running parameters of the sub-modules in the intelligent control method of the injection molding machine is provided for the embodiments of the present application.

[0015] Figure 4 A possible structure diagram of an intelligent control system of an injection molding machine is provided for the embodiments of the present application.

[0016] Explanation of reference signs: information acquisition module 100, running parameter acquisition module 200, multi-control module setting module 300, historical injection molding information output module 400, first production sequence synthesis module 500, second production sequence synthesis module 600, anti-interference ability judgment module 700, automatic control module 800. DETAILED DESCRIPTION

[0017] The embodiments of the present application provide an intelligent control method and system of an injection molding machine, which solves the technical problem of insufficient anti-interference ability of the injection molding machine control system, which may be affected by external environmental noise and electromagnetic interference, and further leads to low injection molding process precision, realizes matching of the corresponding production control sequence, judges whether the production control sequence simultaneously has software anti-interference ability and hardware anti-interference ability, guarantees the overall anti-interference ability of the injection molding machine control system, eliminates external environmental noise and electromagnetic interference, and further improves the technical effect of improving the injection molding process precision.

[0018] After introducing the basic principles of the present application, the various non-limiting embodiments of the present application will be specifically introduced in combination with the drawings of the specification. Embodiment one

[0019] As Figure 1As shown, the embodiment of the present application provides an intelligent control method of an injection molding machine, wherein the intelligent control method of the injection molding machine is applied to an injection molding machine control system, the injection molding machine control system comprises a clock module, a keyboard and display module, a serial communication module, an intelligent temperature control module, a data storage module, and the method comprises:

[0020] S10: Obtain information of N sub-modules of a target injection molding machine, wherein the N sub-modules of the target injection molding machine at least include an injection sub-module, a mold clamping sub-module, a hydraulic sub-module, a heating and cooling sub-module, an electric control sub-module, and a safety and monitoring sub-module.

[0021] Specifically, the injection molding machine control system comprises a clock module, a keyboard and display module, a serial communication module, an intelligent temperature control module, and a data storage module, wherein the injection molding machine control system is in communication connection with the clock module, the injection molding machine control system and the keyboard and display module, the injection molding machine control system and the serial communication module, the injection molding machine control system and the intelligent temperature control module, and the injection molding machine control system and the data storage module. The communication connection is simply a signal transmission interaction. A communication network is formed between the injection molding machine control system and the clock module, the injection molding machine control system and the keyboard and display module, the injection molding machine control system and the serial communication module, the injection molding machine control system and the intelligent temperature control module, and the injection molding machine control system and the data storage module, thereby providing a hardware basis for controlling the injection molding machine.

[0022] Obtain information of N (N≥6 and N is a positive integer) sub-modules of a target injection molding machine, wherein the N sub-modules of the target injection molding machine at least include an injection sub-module, a mold clamping sub-module, a hydraulic sub-module, a heating and cooling sub-module, an electric control sub-module, and a safety and monitoring sub-module. The injection sub-module is a core component for injecting molten plastic material into a mold. The mold clamping sub-module is used to push the mold to move the movable mold plate back and forth and lock the mold. The hydraulic sub-module is used to fill the plastic melt into every corner of the mold by applying high pressure to ensure the quality and integrity of the molded product. The heating sub-module in the heating and cooling sub-module is used to heat the barrel and the injection nozzle on the injection sub-module, and the cooling sub-module in the heating and cooling sub-module is used to reduce the mold temperature to facilitate plastic molding. The electric control sub-module controls the modules of the injection molding machine control system to ensure the stability and reliability of the entire injection molding process. The safety and monitoring sub-module is used to protect the safety of workers and machines, including safety doors, travel valves, limit switches and other elements, to realize the interlocking protection of electricity, machinery and hydraulic pressure, and to provide a basis for subsequent analysis.

[0023] S20: Obtain sub-module real-time running parameters and production process information of the N sub-modules.

[0024] Step S20 comprises the following steps:

[0025] S21: The production process information at least includes the production process nodes of safety door closing, mold locking, injection seat advancing, injection sol, pressure maintaining delay, cooling and sol, glue extraction, mold opening, and ejection of injection molded product, and the time sequence order.

[0026] Specifically, the sub-module real-time running parameters of the N sub-modules and the production process information are acquired, wherein the sub-module real-time running parameters include a series of index parameters such as injection pressure, injection flow corresponding to the injection sub-module, and movable die plate position, mold locking force corresponding to the mold locking sub-module, and pressure maintaining pressure size, pressure maintaining pressure direction corresponding to the hydraulic sub-module, and mold temperature, injection nozzle temperature corresponding to the heating and cooling sub-module, the production process information at least includes the production process nodes of safety door closing, mold locking, injection seat advancing, injection sol, pressure maintaining delay, cooling and sol, glue extraction, mold opening, and ejection of injection molded product, and the time sequence order, which provides a data basis for subsequent analysis.

[0027] S30: Based on the N sub-modules of the target injection molding machine and the production process information, a plurality of control modules are set, and the plurality of control modules include a first control module, a second control module, and a third control module.

[0028] As shown in Figure 2 , step S30 includes steps of:

[0029] S31: The first control module is set, and the first control module is used to control the man-machine interface module in the keyboard and display module, the analog input and output in the serial communication module, the data storage module, and the clock module.

[0030] S32: The second control module is set, and the second control module is used to control the DI input module in the keyboard and display module and the three-terminal programmable open voltage stabilizer, and the three-terminal programmable open voltage stabilizer is composed of an alpha-beta type power amplification circuit.

[0031] S33: The third control module is set, and the third control module is used to control the intelligent temperature control module, the DO output module in the keyboard and display module, and the alarm module.

[0032] Specifically, according to the time sequence order corresponding to the production process node in the production process information, a plurality of control modules are set in the N sub-modules of the target injection molding machine, the plurality of control modules include a first control module, a second control module and a third control module, and the plurality of control modules include: setting the first control module in the plurality of control modules, the first control module is used for controlling the man-machine interface module in the keyboard and display module, the analog input and output in the serial communication module, the data storage module and the clock module, the data storage module can provide at least 128 mold data storage spaces to ensure a large EEPROM, and at the same time, the man-machine interface module supports online display and parameter modification;

[0033] The second control module in the plurality of control modules is set, and the second control module is used for controlling the DI (digital input) input module in the keyboard and display module and the three-terminal programmable open voltage stabilizer, the three-terminal programmable open voltage stabilizer is composed of an alpha-beta type power amplification circuit, and at the same time, the DI input module also includes a communication interface, an SPI interface and an interface circuit for data transmission between the interface and other CPUs;

[0034] The third control module in the plurality of control modules is set, and the third control module is used for controlling the intelligent temperature control module, the DO (digital output) output module in the keyboard and display module and the alarm module, the intelligent temperature control module is used for temperature detection and control, including five temperature segments, one oil temperature segment and one standby temperature segment, wherein the first segment of the five temperature segments is a blanking temperature, the second segment of the five temperature segments is an inlet temperature, the third segment of the five temperature segments is a compression temperature, the fourth segment of the five temperature segments is a metering temperature, and the fifth segment of the five temperature segments is a nozzle temperature, the DO output module corresponds to the DI input module one by one, and provides hardware support for subsequent analysis.

[0035] As shown in Figure 3 , step S32 includes steps:

[0036] S321: Before the acquisition of the sub-module real-time running parameters of the N sub-modules, the first end of the three-terminal programmable open voltage stabilizer in the second control module is connected with a proportional flow valve;

[0037] S322: The second end of the three-terminal programmable open voltage stabilizer in the second control module is connected with a proportional pressure valve;

[0038] S323: The third end of the three-terminal programmable open voltage stabilizer in the second control module is connected with a power supply voltage stabilizing structure, and the power supply voltage stabilizing structure includes an external resistor, a potentiometer and a linear voltage stabilizing chip;

[0039] S324: After the three-terminal programmable on-stabilizer obtains the reference voltage, the real-time running parameters of the N sub-modules are obtained.

[0040] Specifically, the second control module is used to control the three-terminal programmable on-stabilizer, which comprises: in order to improve the reliability of the injection molding machine control system and ensure that the signal collected by the sensor is more accurate after A / D conversion, TL431 is used as a reference power supply, and the three-terminal programmable on-stabilizer is composed of an alpha-beta type power amplifier circuit;

[0041] Therefore, before the real-time running parameters of the N sub-modules are obtained, the first end of the three-terminal programmable on-stabilizer in the second control module, i.e. the end of the three-terminal programmable on-stabilizer, is connected with the proportional flow valve; the second end of the three-terminal programmable on-stabilizer in the second control module, i.e. the end of the three-terminal programmable on-stabilizer, is connected with the proportional pressure valve; the third end of the three-terminal programmable on-stabilizer in the second control module, i.e. the end of the three-terminal programmable on-stabilizer, is connected with the power stabilizing structure, which comprises an external resistor, a potentiometer and a linear voltage stabilizing chip; after the three-terminal programmable on-stabilizer obtains the reference voltage, the real-time running parameters of the sub-modules are collected to obtain the real-time running parameters of the N sub-modules, thereby providing support for ensuring the reliability of the injection molding machine control system.

[0042] S40: The data storage module in the injection molding machine control system outputs the historical injection molding products and historical injection molding qualities of the target injection molding machine within a limited time range, and the historical injection molding products and the historical injection molding qualities correspond one by one;

[0043] S50: Based on the historical injection molding products and historical injection molding qualities, the real-time running parameters of the sub-modules are taken as constraint information to synthesize a first production sequence;

[0044] S60: Based on the historical injection molding products and historical injection molding qualities, the control information of the multiple control modules is taken as constraint information to synthesize a second production sequence;

[0045] Specifically, the limited time range can be the past one week. Based on the data storage module in the injection molding machine control system, the historical injection molding products and historical injection molding qualities of the target injection molding machine within the past one week are outputted, and the historical injection molding quality is the product quality of the historical injection molding product, which is determined by relevant standards such as GB / T41102-2021 “General Technical Requirements for Packaging PET Bottle Preform Injection Molding Mould System” and GB / T 40006.1-2021 “Plastics - Recycled Plastics - Part 1: General”, and the historical injection molding product and the historical injection molding quality correspond one by one;

[0046] The sub-module real-time running parameters are taken as constraint information, and in the case that the historical injection molding quality meets the relevant standards, the sub-module historical running parameters of the historical injection molding products corresponding to the historical injection molding quality meeting the relevant standards are extracted, and the extracted sub-module historical running parameters of the historical injection molding products corresponding to the historical injection molding quality meeting the relevant standards are recorded as a first production sequence.

[0047] The control information of the multi-control module is taken as constraint information, and in the case that the historical injection molding quality meets the relevant standards, the historical control information of the multi-control module of the historical injection molding products corresponding to the historical injection molding quality meeting the relevant standards is extracted, and the extracted historical control information of the multi-control module of the historical injection molding products corresponding to the historical injection molding quality meeting the relevant standards is recorded as a second production sequence. The data meeting the unified injection molding relevant standards is searched and mined, so as to ensure the stability of the performance of the injection molding products processed by the target injection molding machine and guarantee the standardization and safety of the injection molding production process.

[0048] S70: determining whether the injection molding machine control system has anti-interference capability, the anti-interference capability including software anti-interference capability and hardware anti-interference capability, the software anti-interference capability corresponding to the first production sequence, and the hardware anti-interference capability corresponding to the second production sequence;

[0049] S80: if the anti-interference capability is possessed, adjusting the sub-module real-time running parameters of the N sub-modules through the first production sequence and the second production sequence to control the target injection molding machine.

[0050] Step S70 includes the following steps:

[0051] S71: if the anti-interference capability is not possessed, determining that the software anti-interference capability and / or the hardware anti-interference capability fails;

[0052] S72: if only the software anti-interference capability fails, adding a software anti-interference means, deleting the first production sequence that does not meet the software anti-interference means, and obtaining a first stable production sequence;

[0053] S73: if only the hardware anti-interference capability fails, adding a hardware anti-interference means, deleting the second production sequence that does not meet the hardware anti-interference means, and obtaining a second stable production sequence;

[0054] S74: replacing and updating the first production sequence by using the first stable production sequence or replacing and updating the second production sequence by using the second stable production sequence, and re-determining whether the injection molding machine control system has anti-interference capability;

[0055] S75: If the anti-interference capability is available, the real-time running parameters of the N sub-modules are adjusted through the first stable production sequence and the second production sequence or the first production sequence and the second stable production sequence.

[0056] The embodiments of the present application also include:

[0057] S76: The hardware anti-interference means includes any one of the following or a combination of any multiple ways: using a high-performance microprocessor, PCB design, optoelectronic isolation, double-layer isolated power supply.

[0058] S77: The software anti-interference means includes any one of the following or a combination of any multiple ways: applying watchdog technology, output port feedback detection, fault-tolerant technology, repeated verification.

[0059] Specifically, commonly, the working environment of the injection molding machine is harsh and needs to run for a long time, there are many strong electrical equipment around, the power is very large, at the same time, frequent start or stop often causes unstable power supply of the power plant, and it is easy to be affected by strong electromagnetic interference, based on this, it is necessary to judge whether the injection molding machine control system has anti-interference capability, the anti-interference capability includes software anti-interference capability and hardware anti-interference capability, the software anti-interference capability corresponds to the first production sequence, and the hardware anti-interference capability corresponds to the second production sequence.

[0060] Judging whether the injection molding machine control system has anti-interference capability includes: judging whether the injection molding machine control system has software anti-interference capability; judging whether the injection molding machine control system has hardware anti-interference capability. That is, if the injection molding machine control system has software anti-interference capability and hardware anti-interference capability, it means that the injection molding machine control system has anti-interference capability, in the case that the injection molding machine control system has anti-interference capability, the first production sequence and the second production sequence are taken as the control target, the real-time running parameters of the N sub-modules are adjusted and the target injection molding machine is controlled.

[0061] determining whether the injection molding machine control system has software anti-interference capability: the preset offset is self-defined by a person skilled in the art, a plurality of maximum values and a plurality of minimum values of each index in the first production sequence are obtained, at the same time, the maximum value and the minimum value of each index in the first production sequence are obtained, the mode of the offset between the plurality of maximum values of each index in the first production sequence and the maximum value of each index in the first production sequence is calculated, and the mode of the offset between the plurality of maximum values of each index in the first production sequence and the maximum value of each index in the first production sequence is compared with the preset offset; the mode of the offset between the plurality of minimum values of each index in the first production sequence and the minimum value of each index in the first production sequence is calculated, and the mode of the offset between the plurality of minimum values of each index in the first production sequence and the minimum value of each index in the first production sequence is compared with the preset offset; if the mode of the offset between the plurality of maximum values of each index in the first production sequence and the maximum value of each index in the first production sequence, and the mode of the offset between the plurality of minimum values of each index in the first production sequence and the minimum value of each index in the first production sequence, meet the preset offset at the same time, the software anti-interference capability corresponds to the first production sequence, that is, the injection molding machine control system has software anti-interference capability;

[0062] determining whether the injection molding machine control system has hardware anti-interference capability: the hardware anti-interference capability corresponds to the second production sequence, and the hardware anti-interference judgment is performed by comparing the steps of determining whether the injection molding machine control system has software anti-interference capability, and the hardware anti-interference judgment and the software anti-interference judgment are performed at the same time, to ensure the overall anti-interference capability of the injection molding machine control system and provide support for the stability of the injection molding machine control system.

[0063] Specifically, determining whether the injection molding machine control system has anti-interference capability also includes, if it does not have anti-interference capability, determining that the software anti-interference capability and / or the hardware anti-interference capability fails: the software anti-interference means includes any one or any combination of multiple ways of applying watchdog technology, output port feedback detection, fault tolerance technology, and repeated verification, if only the software anti-interference capability fails, adding software anti-interference means to suppress interference as much as possible through software anti-interference means, so as to delete the first production sequence that does not meet the software anti-interference means to obtain a first stable production sequence;

[0064] Optoelectronic isolation, i.e. optoelectronic coupling, suppresses the influence of interference signals on useful signals as much as possible, double-layer isolated power supply, i.e. two circuits are powered at the same time, one circuit is isolated, two Schottky diodes are used to interface and isolate one circuit, and the signal-to-noise ratio is improved. At the same time, both digital signals and analog signals are transmitted using shielding lines. The hardware anti-interference means includes any one of the following: using a high-performance microprocessor, PCB design, optoelectronic isolation, double-layer isolated power supply, or any combination of multiple ways. If the hardware anti-interference capability does not pass, add hardware anti-interference means to suppress interference as much as possible, and delete the first production sequence that does not meet the hardware anti-interference means from the second production sequence to obtain a second stable production sequence.

[0065] If only the software anti-interference capability does not pass, replace and update the first production sequence using the first stable production sequence; if only the hardware anti-interference capability does not pass, replace and update the second production sequence using the second stable production sequence, and re-determine whether the injection molding machine control system has anti-interference capability.

[0066] After the injection molding machine control system is replaced and updated in the first production sequence or the second production sequence, re-determine whether the injection molding machine control system has anti-interference capability. If the re-determination indicates that the injection molding machine control system has anti-interference capability, adjust the sub-module real-time running parameters of the N sub-modules through the first stable production sequence and the second production sequence or the first production sequence and the second stable production sequence, and control the target injection molding machine. This provides support for realizing adaptive optimization of the running parameters of the target injection molding machine.

[0067] Step S74 includes the following steps:

[0068] S741: Determine whether the injection molding machine control system has anti-interference capability. If it does not have anti-interference capability and both the software anti-interference capability and the hardware anti-interference capability do not pass, generate a first fault warranty instruction.

[0069] S742: If the re-determination indicates that the injection molding machine control system still does not have anti-interference capability, generate a second fault warranty instruction. The first fault warranty instruction and the second fault warranty instruction are issued by the alarm module in the third control module.

[0070] Specifically, if the injection molding machine working environment is humid, there is a lot of dust, and even corrosive gas, the working environment of the injection molding machine is too harsh, and stable injection molding machine production work cannot be carried out, that is, the stability of the injection molding machine control system cannot be effectively guaranteed by only the hardware anti-interference means and the software anti-interference means, and maintenance is needed. Therefore, it is judged whether the injection molding machine control system has anti-interference ability. If it does not have anti-interference ability and the software anti-interference ability of the injection molding machine control system and the hardware anti-interference ability of the injection molding machine control system do not pass, a first fault maintenance instruction is generated. The content of the first fault maintenance instruction includes a first production sequence and a second production sequence. The first fault maintenance instruction is used to indicate that the injection molding machine control system is found to not have anti-interference ability for the first time.

[0071] If it is re-judged that the injection molding machine control system still does not have anti-interference ability, including that the software anti-interference ability and the hardware anti-interference ability do not pass, the software anti-interference ability does not pass, and the hardware anti-interference ability does not pass, a second fault maintenance instruction is generated. The content of the second fault maintenance instruction includes the first stable production sequence and the second production sequence or the first production sequence and the second stable production sequence. The second fault maintenance instruction is used to indicate that the injection molding machine control system is still found to not have anti-interference ability after adaptive optimization. The first fault maintenance instruction and the second fault maintenance instruction are issued by an alarm module in the third control module. The first fault maintenance instruction and the second fault maintenance instruction are used to remind relevant maintenance personnel to maintain and provide support for timely maintenance.

[0072] In summary, the intelligent control method and system of the injection molding machine provided by the embodiments of the present application have the following technical effects:

[0073] 1. Because the information of the acquisition submodule, the real-time running parameters, and the production process information are obtained, and the multiple control modules are set; the historical injection molding products and the historical injection molding quality are output, and the first and second production sequences are compared and synthesized; it is judged whether the injection molding machine control system has anti-interference ability; if it does, the real-time running parameters of the submodules are adjusted and the target injection molding machine is controlled through the first and second production sequences. The present application provides an intelligent control method and system of an injection molding machine, which realizes matching of corresponding production control sequences, judges whether the production control sequences have software anti-interference ability and hardware anti-interference ability at the same time, guarantees the overall anti-interference ability of the injection molding machine control system, eliminates external environmental noise and electromagnetic interference, and further improves the technical effect of injection molding process precision.

[0074] 2. Since the three-terminal programmable open voltage stabilizer is connected with the proportional flow valve, the proportional pressure valve and the power supply voltage stabilizing structure before the real-time running parameters of the N sub-modules are obtained, the real-time running parameters of the N sub-modules are obtained after the three-terminal programmable open voltage stabilizer obtains the reference voltage, and the reliability of the injection molding machine control system is ensured. Embodiment two

[0075] Based on the same inventive concept as the intelligent control method of the injection molding machine in the foregoing embodiment, as shown in the embodiment of the present application, an intelligent control system of an injection molding machine is provided, wherein the system comprises: Figure 4

[0076] An information acquisition module 100 is configured to acquire information of N sub-modules of a target injection molding machine, wherein the N sub-modules of the target injection molding machine at least include an injection sub-module, a mold clamping sub-module, a hydraulic sub-module, a heating and cooling sub-module, an electric control sub-module and a safety and monitoring sub-module.

[0077] A running parameter acquisition module 200 is configured to acquire real-time running parameters of the N sub-modules and production process information.

[0078] A multi-control module setting module 300 is configured to set multi-control modules based on the N sub-modules of the target injection molding machine and the production process information, wherein the multi-control modules include a first control module, a second control module and a third control module.

[0079] A historical injection information output module 400 is configured to output historical injection products and historical injection qualities of the target injection molding machine within a limited time range through a data storage module in the injection molding machine control system, wherein the historical injection products and the historical injection qualities are in one-to-one correspondence.

[0080] A first production sequence synthesis module 500 is configured to synthesize a first production sequence by taking the real-time running parameters of the sub-modules as constraint information based on the historical injection products and the historical injection qualities.

[0081] A second production sequence synthesis module 600 is configured to synthesize a second production sequence by taking control information of the multi-control modules as constraint information based on the historical injection products and the historical injection qualities.

[0082] An anti-interference capability judgment module 700 is configured to judge whether the injection molding machine control system has anti-interference capability, wherein the anti-interference capability includes software anti-interference capability and hardware anti-interference capability, the software anti-interference capability corresponds to the first production sequence, and the hardware anti-interference capability corresponds to the second production sequence.

[0083] ​The automatic control module 800 is used to adjust the real-time running parameters of the N sub-modules through the first production sequence and the second production sequence if the anti-interference ability is available, so as to control the target injection molding machine.

[0084] Further, the system comprises:

[0085] The production process information determination module is used to determine the production process information, which at least includes the production process nodes of the safety door closing, the mold clamping, the injection seat advancing, the injection sol, the pressure maintaining delay, the cooling and sol, the glue extracting, the mold opening, and the ejection of the injection molding product, and the timing sequence order.

[0086] Further, the system comprises:

[0087] The first control module setting module is used to set the first control module, which is used to control the human-machine interface module in the keyboard and display module, the analog input and output in the serial communication module, the data storage module, and the clock module.

[0088] The second control module setting module is used to set the second control module, which is used to control the DI input module in the keyboard and display module and the three-terminal programmable open voltage stabilizer composed of an alpha-beta power amplifier circuit.

[0089] The third control module setting module is used to set the third control module, which is used to control the intelligent temperature control module, the DO output module in the keyboard and display module, and the alarm module.

[0090] Further, the system comprises:

[0091] The proportional flow valve connection module is used to connect the first end of the three-terminal programmable open voltage stabilizer in the second control module with the proportional flow valve.

[0092] The proportional pressure valve connection module is used to connect the second end of the three-terminal programmable open voltage stabilizer in the second control module with the proportional pressure valve.

[0093] The power supply voltage stabilizing structure connection module is used to connect the third end of the three-terminal programmable open voltage stabilizer in the second control module with the power supply voltage stabilizing structure, which includes an external resistance, a potentiometer, and a linear voltage stabilizing chip.

[0094] The sub-module real-time running parameter acquisition module is used to acquire the real-time running parameters of the N sub-modules after the three-terminal programmable open voltage stabilizer obtains the reference voltage.

[0095] Further, the system comprises:

[0096] a software anti-interference capability and / or hardware anti-interference capability determination module, configured to determine that the software anti-interference capability and / or the hardware anti-interference capability fails if the anti-interference capability is not met;

[0097] a first stable production sequence acquisition module, configured to add a software anti-interference means, delete a software anti-interference means from the first production sequence if the software anti-interference means is not met, and acquire a first stable production sequence if only the software anti-interference capability fails;

[0098] a second stable production sequence acquisition module, configured to add a hardware anti-interference means, delete a hardware anti-interference means from the second production sequence if the hardware anti-interference means is not met, and acquire a second stable production sequence if only the hardware anti-interference capability fails;

[0099] a replacement update module, configured to replace the first production sequence with the first stable production sequence or replace the second production sequence with the second stable production sequence, and re-determine whether the injection molding machine control system meets the anti-interference capability;

[0100] a submodule real-time running parameter adjustment module, configured to adjust submodule real-time running parameters of the N submodules through the first stable production sequence and the second production sequence or the first production sequence and the second stable production sequence if the anti-interference capability is met.

[0101] Further, the system comprises:

[0102] a hardware anti-interference means determination module, configured to determine that the hardware anti-interference means comprises any one or any combination of multiple ways of using a high-performance microprocessor, PCB design, photoelectric isolation, and double-layer isolation power supply;

[0103] a software anti-interference means determination module, configured to determine that the software anti-interference means comprises any one or any combination of multiple ways of applying watchdog technology, output port feedback detection, fault-tolerant technology, and repeated verification.

[0104] Further, the system comprises:

[0105] a first fault warranty instruction generation module, configured to determine whether the injection molding machine control system meets the anti-interference capability, and generate a first fault warranty instruction if the anti-interference capability is not met and the software anti-interference capability and the hardware anti-interference capability both fail;

[0106] a second fault warranty instruction generation module, configured to generate a second fault warranty instruction if it is re-determined that the injection molding machine control system still does not meet the anti-interference capability, and the first fault warranty instruction and the second fault warranty instruction are issued by an alarm module in the third control module.

[0107] Any step of the above method can be stored as computer instructions or programs in a non-limited computer memory and can be invoked by a non-limited computer processor to recognize to implement any method in the embodiments of the present application, which is not limited here.

[0108] Further, the first or second above may not only represent the order relationship, but also may represent a specific concept, and / or refer to the selection of individual or all elements. Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the present application and its equivalent technologies, the present application is intended to include these modifications and variations.

Claims

1. An intelligent control method for an injection molding machine, characterized in that, The intelligent control method for the injection molding machine is applied to the injection molding machine control system, which includes a clock module, a keyboard and display module, a serial communication module, an intelligent temperature control module, and a data storage module. The method includes: Obtain information about N sub-modules of the target injection molding machine, wherein the N sub-modules of the target injection molding machine include at least an injection sub-module, a mold clamping sub-module, a hydraulic sub-module, a heating and cooling sub-module, an electrical control sub-module, and a safety and monitoring sub-module; and Obtain the real-time operating parameters and production process information of the N sub-modules; Based on the N sub-modules of the target injection molding machine and the production process information, multiple control modules are set up; The data storage module in the injection molding machine control system outputs the historical injection products and historical injection quality of the target injection molding machine within a limited time range, and the historical injection products and historical injection quality correspond one-to-one. Based on the historical injection molded products and historical injection molded quality, the real-time operating parameters of the sub-modules are used as constraint information to synthesize the first production sequence; Based on the historical injection molded products and historical injection quality, the control information of the multi-control module is used as constraint information to synthesize a second production sequence; Determine whether the injection molding machine control system has anti-interference capability. The anti-interference capability includes software anti-interference capability and hardware anti-interference capability. The software anti-interference capability corresponds to the first production sequence, and the hardware anti-interference capability corresponds to the second production sequence. If it has anti-interference capability, the real-time operating parameters of the N sub-modules can be adjusted through the first production sequence and the second production sequence to control the target injection molding machine; The multi-control module includes a first control module, a second control module, and a third control module, and the method includes: A first control module is provided, which is used to control the human-machine interface module in the keyboard and display module, the analog input and output in the serial communication module, the data storage module, and the clock module; A second control module is provided, which is used to control the DI input module and the three-terminal programmable voltage regulator in the keyboard and display module. The three-terminal programmable voltage regulator is composed of a Class AB power amplifier circuit. A third control module is provided, which is used to control the intelligent temperature control module, the DO output module in the keyboard and display module, and the alarm module. The historical operating parameters of the sub-module corresponding to the historical injection molded products that meet the standards from the extracted historical injection molding quality are recorded as the first production sequence; The historical control information of the multi-control module corresponding to the historical injection molded products that meet the standards in the extracted historical injection molding quality is recorded as the second production sequence; Determining whether the injection molding machine control system has software anti-interference capability includes: Those skilled in the art can customize and set a preset offset, compare the mode of the offset between multiple maximum values ​​of each indicator in the first production sequence and the maximum value of each indicator in the first production sequence with the preset offset; compare the mode of the offset between multiple minimum values ​​of each indicator in the first production sequence and the minimum value of each indicator in the first production sequence with the preset offset. If the mode of the offset between the multiple maximum values ​​of each indicator in the first production sequence and the maximum value of each indicator in the first production sequence, and the mode of the offset between the multiple minimum values ​​of each indicator in the first production sequence and the minimum value of each indicator in the first production sequence, both meet the preset offset, and since the software anti-interference capability corresponds to the first production sequence, it indicates that the injection molding machine control system has software anti-interference capability. Determining whether the injection molding machine control system has hardware anti-interference capability includes: The hardware anti-interference capability corresponds to the second production sequence, and the step of comparing and judging whether the injection molding machine control system has software anti-interference capability is performed.

2. The method as described in claim 1, characterized in that, The production process information includes at least the following production process nodes in a sequential order: safety door closing, mold locking, injection seat advancement, injection sol, pressure holding delay, cooling and sol, extraction, mold opening, and ejection of the injection molded product.

3. The method as described in claim 1, characterized in that, Before obtaining the real-time operating parameters of the N sub-modules, the method further includes: The first terminal of the three-terminal programmable voltage regulator in the second control module is connected to the proportional flow valve; The second terminal of the three-terminal programmable voltage regulator in the second control module is connected to the proportional pressure valve. The third terminal of the three-terminal programmable voltage regulator in the second control module is connected to the power supply voltage regulator structure, which includes an external resistor, a potentiometer, and a linear voltage regulator chip. After the reference voltage is obtained from the three-terminal programmable voltage regulator, the real-time operating parameters of the N sub-modules are acquired.

4. The method as described in claim 1, characterized in that, The method for determining whether the injection molding machine control system has anti-interference capability further includes: If it lacks anti-interference capability, it is determined that the software anti-interference capability and / or hardware anti-interference capability have failed. If only the software anti-interference capability fails, add software anti-interference measures, delete the parts that do not meet the software anti-interference measures from the first production sequence, and obtain the first stable production sequence. If only the hardware anti-interference capability fails, add hardware anti-interference measures, remove those that do not meet the hardware anti-interference measures from the second production sequence, and obtain the second stable production sequence. The injection molding machine control system is re-evaluated to determine whether it has anti-interference capability by replacing and updating the first production sequence using the first stable production sequence or by replacing and updating the second production sequence using the second stable production sequence. If it has anti-interference capability, the real-time operating parameters of the N sub-modules can be adjusted by the first stable production sequence and the second production sequence or the first production sequence and the second stable production sequence.

5. The method as described in claim 4, characterized in that, The method further includes: The hardware anti-interference measures include any one or any combination of high-performance microprocessors, PCB design, opto-isolation, and double-layer isolation power supplies. The software anti-interference measures include any one or a combination of watchdog technology, output port feedback detection, fault tolerance technology, and duplicate verification.

6. The method as described in claim 3, characterized in that, The method for re-evaluating whether the injection molding machine control system has anti-interference capability further includes: Determine whether the injection molding machine control system has anti-interference capability. If it does not have anti-interference capability and both the software anti-interference capability and the hardware anti-interference capability fail, generate a first fault warranty instruction. If the injection molding machine control system is still deemed to lack anti-interference capability upon reassessment, a second fault warranty instruction is generated. The first fault warranty instruction and the second fault warranty instruction are issued by the alarm module in the third control module.

7. An intelligent control system for an injection molding machine, characterized in that, A smart control method for implementing an injection molding machine according to any one of claims 1-6 includes: An information acquisition module is used to acquire information about N sub-modules of a target injection molding machine, wherein the N sub-modules of the target injection molding machine include at least an injection sub-module, a mold clamping sub-module, a hydraulic sub-module, a heating and cooling sub-module, an electrical control sub-module, and a safety and monitoring sub-module; and The operating parameter acquisition module is used to acquire the real-time operating parameters and production process information of the N sub-modules; A multi-control module setting module is used to set up multiple control modules based on the N sub-modules of the target injection molding machine and the production process information. The multiple control modules include a first control module, a second control module, and a third control module. The historical injection molding information output module is used to output the historical injection products and historical injection quality of the target injection molding machine within a limited time range through the data storage module in the injection molding machine control system. The historical injection products and the historical injection quality correspond one-to-one. The first production sequence synthesis module is used to synthesize the first production sequence based on the historical injection molded products and historical injection molded quality, using the real-time operating parameters of the sub-modules as constraint information. The second production sequence synthesis module is used to synthesize a second production sequence based on the historical injection molded products and historical injection quality, using the control information of the multi-control module as constraint information. An anti-interference capability judgment module is used to determine whether the injection molding machine control system has anti-interference capability. The anti-interference capability includes software anti-interference capability and hardware anti-interference capability. The software anti-interference capability corresponds to the first production sequence, and the hardware anti-interference capability corresponds to the second production sequence. An automatic control module, if it has anti-interference capabilities, is used to adjust the real-time operating parameters of the N sub-modules through the first production sequence and the second production sequence to control the target injection molding machine.

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