Stabilizing machine table and stabilizing control system of high-speed injection molding machine

Abstract

The invention relates to a stable machine table of a high-speed injection molding machine and a stable control system, and belongs to the technical field of high-speed injection molding machines. The guide rail and the lead screw are both in high-precision design, precise matching can ensure that when the lead screw rotates, precise linear positioning is achieved, vibration in the movement process is reduced by optimizing the mechanical structure design of the injection molding machine, then the mold opening and closing structure is directly connected with the ball screw through the embedded direct-drive servo motor, and therefore the mold opening and closing effect is improved. The ball screw serves as a mold locking structure of an iron core direct-drive mold opening and closing structure of the embedded direct-drive servo motor, transmission can be conducted more directly and quickly, the transmission efficiency is higher, the intelligent electric control technology is combined, the mold opening and closing motion control precision is further improved, comprehensive measures are taken, and the problem that in the prior art, when a high-speed injection molding machine operates continuously for a long time, the mold opening and closing precision is poor is solved. A series of problems caused by strong mechanical vibration cannot be solved fundamentally.

Description

Technical Field

[0001] The invention belongs to the technical field of high-speed injection molding machines, and in particular relates to a stable machine platform and a stable control system of a high-speed injection molding machine. Background Art

[0002] As a key equipment in the plastic manufacturing industry, high-speed injection molding machines are usually used to produce high-precision and high-complexity products. Generally speaking, the injection speed of high-speed injection molding machines can reach 200-300 mm / s, and for high-performance models, the injection speed can reach more than 500 mm / s. At present, during the actual operation of high-speed injection molding machines, the friction between the moving parts will generate heat, which will cause the overall temperature of the machine to rise. Due to these temperature changes, the machine parts will experience thermal expansion and contraction, and the high-speed moving parts will generate inertia force, which may cause the high-speed injection molding machine to vibrate. In order to cope with this problem, existing high-speed injection molding machines generally use shock-absorbing materials in certain key components of the injection molding machine to match the configuration of the injection molding machine itself, and reduce the mechanical vibration problem of the high-speed injection molding machine during the injection molding process by absorbing and reducing vibration energy, thereby improving the operating stability of the equipment and the molding quality of the product.

[0003] However, due to its fast injection speed, high-speed injection molding machines will produce stronger mechanical vibrations than ordinary injection molding machines. In order to maintain an efficient production rhythm and produce a large number of products, high-speed injection molding machines need to run continuously for a long time. Under such operating conditions, its strong mechanical vibration is more likely to cause a series of problems. For example, when the moving parts of a high-speed injection molding machine are running for a long time, they may wear out due to friction. The wear of the moving parts will cause changes in the mass distribution of the parts, thereby causing imbalance. The imbalance of the moving parts of the injection molding machine will also produce periodic vibrations, which will eventually affect the entire equipment, resulting in increased vibration of the equipment during high-speed injection molding, thereby affecting product quality and stability. To solve this series of problems caused by mechanical vibration, comprehensive measures are usually required. Simply relying on shock-absorbing materials and the configuration of the injection molding machine itself can often only alleviate some vibration problems, but cannot fundamentally solve the problem. In this regard, a stable machine and a stable control system for a high-speed injection molding machine are proposed, and comprehensive measures are taken to fundamentally solve a series of problems caused by mechanical vibration. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a stable machine platform and a stable control system for a high-speed injection molding machine, which solves the problem that the high-speed injection molding machine in the prior art cannot fundamentally solve a series of problems caused by strong mechanical vibration when it runs continuously for a long time.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A stable machine platform of a high-speed injection molding machine, comprising a support structure, a transmission structure respectively arranged on the support structure and a mold opening and closing structure connected to the transmission structure, and an intelligent electric control system for controlling motion accuracy, wherein the transmission structure and the mold opening and closing structure are both connected to the intelligent electric control system for communication; The supporting structure includes a bed and a frame arranged on the bed, and the bed and the frame are both made of high-rigidity steel; the transmission structure includes a guide rail arranged on the bed and a lead screw matched with the guide rail, and the guide rail and the lead screw are both designed with high precision, and the matching between the guide rail and the lead screw is high-precision matching; the opening and closing mold structure is directly connected to the ball screw through an embedded direct-drive servo motor, and the ball screw serves as a locking structure of the iron core direct-drive opening and closing mold structure of the embedded direct-drive servo motor. The supporting structure, transmission structure, opening and closing mold structure and intelligent electronic control system cooperate as a whole to form a stable machine platform to reduce mechanical vibration.

[0006] As a further solution of the present invention, the embedded direct-drive servo motor fixes the magnetic steel inside the rotor through a salient pole embedded structure.

[0007] As a further solution of the present invention, the support structure, transmission structure and mold opening and closing structure are all provided with dampers and balance blocks for reducing vibration.

[0008] A stable control system for a high-speed injection molding machine, the intelligent electronic control system includes a control terminal and a servo motor control module communicatively connected to the control terminal, the servo motor control module is communicatively connected to the control terminal via a servo driver control module, the servo driver control module is used to receive signals from the control terminal and convert these signals into electrical signals that can be understood by the motor to drive the servo motor.

[0009] As a further solution of the present invention, the servo drive control module includes a three-closed-loop control structure of a current loop, a speed loop and a position loop. The current loop, the speed loop and the position loop are nested with each other to form a control module. The current loop is used to adjust the torque of the servo motor, the speed loop is used to ensure that the servo motor runs at a set speed, and the position loop is used to accurately position the servo motor.

[0010] As a further solution of the present invention, the servo drive control module also includes a multi-turn anti-vibration encoder connected to the motor shaft of the servo motor, and the signal of the multi-turn anti-vibration encoder is compared with the set values ​​of the position loop and the speed loop to achieve closed-loop control.

[0011] As a further solution of the present invention, the servo driver control module further includes an EtherCAT high-speed bus matching the servo driver, and the EtherCAT high-speed bus is used for data exchange between servo drivers.

[0012] As a further solution of the present invention, the servo drive has a built-in real-time overload algorithm, which enables the system to withstand 2.5 times the overload capacity in a short period of time.

[0013] As a further solution of the present invention, a vibration monitoring module is also preset in the control terminal, and the vibration monitoring module uses active or passive vibration suppression technology to monitor the vibration state of the machine in real time.

[0014] As a further solution of the present invention, the control terminal is also preset with a software function module for adjusting the parameters of the servo motor in real time, and the software function module includes a real-time data acquisition module, a vibration analysis module, a control parameter adjustment module and a vibration suppression instruction module. The real-time data acquisition module, the vibration analysis module, the control parameter adjustment module and the vibration suppression instruction module are all communicatively connected to the control terminal. The real-time data acquisition module is used to collect machine operation status data, the vibration analysis module is used to analyze data and identify vibration sources, the control parameter adjustment module is used to adjust PID parameters according to the analysis results, and the vibration suppression instruction module is used to output control instructions and execute vibration suppression measures.

[0015] The beneficial effects of the present invention are as follows: by designing the supporting structure, the bed and the frame are both made of high-rigidity steel; the guide rails and the lead screw are both designed with high precision, and the cooperation between the guide rails and the lead screw is a high-precision cooperation. This precise cooperation can ensure that when the lead screw rotates, accurate linear positioning is achieved. By optimizing the mechanical structure design of the injection molding machine, a high-rigidity frame and bed, as well as high-precision guide rails and lead screws are used to reduce vibration during movement. Then the opening and closing mold structure is directly connected to the ball screw through an embedded direct-drive servo motor. The ball screw serves as a locking structure of the iron core direct-drive opening and closing mold structure of the embedded direct-drive servo motor, which can transmit more directly and quickly, and has higher transmission efficiency. Finally, combined with intelligent electronic control technology, the control accuracy of the opening and closing mold movement is further improved, and the vibration and noise of the machine are effectively reduced. Comprehensive measures are taken to solve the series of problems caused by strong mechanical vibrations that cannot be fundamentally solved during long-term continuous operation of high-speed injection molding machines in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Description of main component symbols: In the figure: 1. Support structure; 2. Transmission structure; 3. Opening and closing mold structure. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0020] See also Figure 1 This embodiment provides a stable machine platform of a high-speed injection molding machine, including a support structure 1, a transmission structure 2 respectively arranged on the support structure 1 and a mold opening and closing structure 3 connected to the transmission structure 2, and an intelligent electronic control system for controlling motion accuracy, wherein the transmission structure 2 and the mold opening and closing structure 3 are both communicatively connected to the intelligent electronic control system; At present, the existing high-speed injection molding machines generally use shock-absorbing materials in some key components of the injection molding machines to reduce the mechanical vibration problems of the high-speed injection molding machines during the injection molding process by absorbing and reducing vibration energy, thereby improving the operation stability of the equipment and the molding quality of the products. However, for high-speed injection molding machines with injection speeds of more than 500 mm / s, due to their fast injection speeds, they will produce stronger mechanical vibrations than ordinary injection molding machines. In order to maintain an efficient production rhythm and produce a large number of products, high-speed injection molding machines need to operate continuously for a long time. Under such operating conditions, their strong mechanical vibrations are more likely to cause a series of problems. For example, when the moving parts of the high-speed injection molding machine are in long-term operation, they may wear due to friction. The wear of the moving parts will cause changes in the mass distribution of the parts, thereby causing imbalance. The imbalance of the moving parts of the injection molding machine will also produce periodic vibrations, which will eventually affect the entire equipment, resulting in increased vibration of the equipment during high-speed injection molding, thereby affecting product quality and stability. To solve this series of problems caused by mechanical vibration, comprehensive measures are usually required. Simply relying on shock-absorbing materials can often only alleviate some vibration problems, but cannot fundamentally solve the problem.

[0021] In order to fundamentally solve a series of problems caused by mechanical vibration, in this embodiment, a support structure 1 is designed, and the support structure 1 includes a bed and a frame arranged on the bed, and the bed and the frame are made of high-rigidity steel; the bed and the frame provide support for the remaining parts on the entire injection molded part, so the high-rigidity steel used here can ensure stability; the transmission structure 2 includes a guide rail arranged on the bed and a lead screw matched with the guide rail, and the guide rail and the lead screw are both of high-precision design, and the match between the guide rail and the lead screw is high-precision match; the guide rail here is installed on the bed through a nut, and the gap between the lead screw and the nut is very small, so that The matching accuracy between the lead screw and the nut is very high. This precise matching can ensure that when the lead screw rotates, the nut can move along the lead screw axis with extremely high accuracy, thereby achieving precise linear positioning. The accuracy of the guide rail is reflected in the finish and linearity of its surface. The high-precision guide rail can ensure that the worktable of the injection molding machine moves on the guide rail smoothly and accurately without lateral or vertical offset, thereby ensuring the linearity of the movement and the accuracy of repeated positioning. The above is the first design solution to fundamentally solve the problem of mechanical vibration by optimizing the mechanical structure design of the injection molding machine, using a high-rigidity frame and bed, as well as high-precision guide rails and lead screws to reduce vibration during movement. Then the mold opening and closing structure 3 is directly connected to the ball screw through the embedded direct-drive servo motor. The ball screw is used as the iron core of the embedded direct-drive servo motor to directly drive the mold locking structure of the mold opening and closing structure 3. The mold opening and closing structure 3 adopts the independently developed embedded direct-drive servo motor and is directly connected to the ball screw. The ball screw is used as the iron core of the embedded direct-drive servo motor, which makes the transmission more precise and reduces the preparation cost. The direct-drive mold locking structure can be more directly and quickly transmitted with higher transmission efficiency than the traditional synchronous belt pulley transmission method. This is the second design solution to fundamentally solve the mechanical vibration. Finally, the supporting structure 1, the transmission structure 2, the mold opening and closing structure 3 and the intelligent electronic control system work together to form a stable machine, which reduces mechanical vibration. The intelligent electronic control technology is combined to further improve the control accuracy of the mold opening and closing motion, and effectively reduce machine vibration. This is the third design solution to fundamentally solve the mechanical vibration. This application is aimed at high-speed injection molding machines with injection speeds of more than 500 mm / s. The above three solutions are combined and comprehensive measures are taken to fundamentally solve the problem of mechanical vibration.

[0022] Since a servo motor is required when a high-speed injection molding machine is running, and the current servo motors, when in use, mostly require the servo motor to cooperate with an intermediate transmission device to achieve movement, but this design is for a high-speed injection molding machine with an injection speed of more than 500 mm / s. The vibration force brought by the high-speed injection molding machine may be large, which will affect the accuracy and life of the motor. Once the motor itself has a problem, the amplitude of the vibration will be amplified again. In order to solve this problem, in one embodiment, the embedded direct-drive servo motor fixes the magnet inside the rotor through a salient pole embedded structure. The embedded direct-drive servo motor omits the intermediate transmission device required by the traditional motor by directly mounting the rotor on the load shaft, which reduces energy loss and improves the response speed and accuracy of the system. The magnet is effectively protected by the unique salient pole embedded magnet rotor structure of the servo motor. The salient pole embedded structure fixes the magnet inside the rotor, reducing the risk of damage to the magnet due to vibration or external impact, thereby improving the service life of the magnet and the reliability of the motor. By weakening the influence of the armature reaction on the magnet, the motor reliability is made higher. In fact, weakening this influence is to reduce the demagnetization phenomenon of the magnet, maintain the performance of the magnet, and thus improve the reliability of the motor; In addition, the reluctance torque is the additional torque generated by the change of reluctance in the magnetic circuit when the motor is running. The effective use of this torque can reduce the required current, thereby reducing the power consumption of the motor and improving energy efficiency. Since the improvement of the air gap magnetic potential waveform can make the electromagnetic field distribution of the motor more uniform, the cogging torque caused by the distortion of the magnetic potential waveform can be reduced, thereby improving the running performance and efficiency of the motor. The optimization of the magnetic circuit reduces the leakage of the magnetic steel, increases the magnetic induction efficiency, and improves the utilization rate of the effective material of the rotor. By improving the air gap magnetic potential waveform of the motor, the sinusoidality is improved and the cogging torque of the motor is reduced; the optimization of the magnetic circuit design can reduce the leakage of the magnetic steel, so that more magnetic flux passes through the useful path and improves the magnetic induction efficiency. This not only improves the efficiency of the motor, but also makes the utilization of the rotor material more sufficient. Therefore, here, by increasing the winding coefficient, suppressing the high-order harmonics that generate vibration and noise, and improving the stability of the motor operation, the structure of the servo motor is adjusted as above, so that this servo motor can be adapted to high-speed injection molding machines with injection speeds of more than 500 mm / s. When encountering large vibration forces, its life and precision can be guaranteed, and the transmission efficiency can be improved, thereby reducing the vibration of the injection molding machine.

[0023] In order to better reduce the vibration of the high-speed injection molding machine during operation, in one embodiment, the support structure 1, the transmission structure 2 and the opening and closing mold structure 3 are all provided with dampers and balance blocks for reducing vibration. When vibration occurs, the damping material or oil in the damper will hinder the movement of the vibration system. The damping force in the damper is proportional to the speed. In this way, during the vibration cycle, the damper continuously consumes energy to reduce the amplitude. Therefore, in this high-speed injection molding machine, the damper is installed on the support structure 1 or the moving part to reduce the vibration caused by high-speed movement. In addition, when installing the balance block, it is necessary to accurately calculate and install the balance block on the moving part of the high-speed injection molding machine so that the centrifugal force generated by it and the inertia force generated by the movement of the part offset each other. In this way, during the operation of the high-speed injection molding machine, the balance block can adapt to different operating states by continuously adjusting the position of its mass center to maintain the balance of the system. In addition, the balance block also needs to be linked with the intelligent electronic control system to achieve dynamic balance and further improve the vibration reduction effect. The damper and the balance block work together to effectively reduce the vibration of the high-speed injection molding machine during operation and improve the working efficiency and stability of the machine.

[0024] A stable control system for a high-speed injection molding machine, wherein the intelligent electronic control system comprises a control terminal and a servo motor control module that is communicatively connected to the control terminal, wherein the servo motor control module is communicatively connected to the control terminal via a servo driver control module, and the servo driver control module is used to receive signals from the control terminal and convert these signals into electrical signals that can be understood by the motor to drive the servo motor. After the mechanical part designs the machine platform of the high-speed injection molding machine, it is also necessary to coordinate the support structure 1, the transmission structure 2, the mold opening and closing structure 3 and the intelligent electronic control system as a whole to form a stable machine platform to reduce mechanical vibration, and further improve the control accuracy of the mold opening and closing motion by combining the intelligent electronic control system, and adopt comprehensive measures to effectively reduce mechanical vibration and fundamentally solve the mechanical vibration. In this regard, in this embodiment, the intelligent electronic control system needs to select a high-performance servo motor and a servo driver, and the high-performance servo driver here has the following characteristics: (1) Multi-closed-loop control system: The servo drive control module includes a three-loop control structure of current loop, speed loop and position loop. The current loop, speed loop and position loop are nested with each other to form a control module. The current loop is used to adjust the torque of the servo motor, the speed loop is used to ensure that the servo motor runs at the set speed, and the position loop is used to accurately position the servo motor. The high-performance servo drive adopts a three-loop control strategy of current, speed and position to achieve precise control of the motor. The current loop is responsible for adjusting the torque of the motor, the speed loop ensures that the motor runs at the set speed, and the position loop is responsible for precise positioning. This multi-level control structure improves the response speed and stability of the system; (2) High-performance encoder support: The servo drive control module also includes a multi-turn anti-vibration encoder connected to the motor shaft of the servo motor. The signal of the multi-turn anti-vibration encoder is compared with the set values ​​of the position loop and the speed loop to achieve closed-loop control. Here, a 23-bit multi-turn anti-vibration encoder is equipped, which can work stably in high temperature and vibration environments. The high resolution and anti-interference ability of this encoder enable the motor to maintain high-precision control under dynamic loads. (3) EtherCAT high-speed communication: The servo drive control module also includes an EtherCAT high-speed bus that matches the servo drive. The EtherCAT high-speed bus is used for data exchange between servo drives. High-performance servo drives are equipped with the EtherCAT high-speed bus as standard, which supports synchronous operation between servo drives. This high-speed data transmission capability ensures the real-time and accuracy of the system when multiple machines work together. (4) Real-time overload algorithm: The servo drive has a built-in real-time overload algorithm, which enables the system to withstand an overload capacity of 2.5 times in a short period of time. The built-in real-time overload algorithm of the drive enables the system to withstand an overload capacity of up to 2.5 times in a short period of time. This feature is particularly important for applications such as injection molding machines that require rapid mold opening and closing, and can effectively prevent system instability caused by instantaneous load changes; during the mold opening and closing process, the injection molding machine may encounter a rapid increase in load in a short period of time. Through the analysis of actual operating data, it may be found that 2.5 times the overload is a reasonable multiple to meet the operating requirements of such equipment under extreme conditions. Increasing the overload capacity can increase the stability and durability of the system, but it will also increase costs. The 2.5 times overload capacity is the result of balancing costs while ensuring performance. The 2.5 times overload capacity is based on a comprehensive consideration of system performance, safety, economy and other factors; (5) Injection speed and pressure closed-loop control: A closed-loop control function of injection speed and pressure is designed for all-electric high-speed injection molding machines. This function can adjust the speed and pressure during the injection molding process in real time to ensure product quality and production efficiency.

[0025] In order to monitor the vibration condition in real time during the operation of the high-speed injection molding machine and adjust the parameters of the high-speed injection molding machine in time according to the vibration condition, in one embodiment, a vibration detection module is preset in the control terminal. The vibration detection module uses active or passive vibration suppression technology to monitor the vibration state of the machine in real time. The vibration detection module cooperates with the damper and the balance block to perform active or passive vibration control technology to reduce vibration. The control terminal is also preset with a software function module for adjusting the parameters of the servo motor in real time to adapt to different operating conditions and reduce vibration. The software function module includes a real-time data acquisition module, a vibration analysis module, a control parameter adjustment module and a vibration suppression instruction module. The real-time data acquisition module, the vibration analysis module, the control parameter adjustment module and the vibration suppression instruction module are all connected to the control terminal in communication. The real-time data acquisition module is used to collect machine operation status data, the vibration analysis module is used to analyze data and identify vibration sources, the control parameter adjustment module is used to adjust PID parameters according to the analysis results, and the vibration suppression instruction module is used to output control instructions and execute vibration suppression measures.

[0026] It should be noted that the vibration of the electric injection molding machine during high-speed operation can be reduced by the above technical solutions in parallel. The working steps of this high-speed injection molding machine during stable operation are as follows: Step 1: Initialize the system, including servo motor parameters and vibration monitoring module; Step 2: Perform a system self-check to ensure that all modules are working properly; Step 3: Monitor machine operation in real time and collect data; Step 4: Process the data through the vibration analysis module to identify vibration; Step 5: According to the analysis results, optimize the PID parameters through the control parameter adjustment module; Step 6: Execute vibration suppression instructions to reduce machine vibration; Step 7: Repeat steps 3 to 6 to ensure the machine continues to run stably.

[0027] Through the working steps of step one to step seven, the vibration of the high-speed injection molding machine during high-speed operation can be effectively reduced, and the production efficiency and product quality can be improved.

[0028] In addition, it is worth mentioning that the real-time data acquisition module in the software function module is used to collect the status data of the machine, and the vibration analysis module is used to analyze the data and identify the vibration source. However, since the high-speed injection molding machine is running at high speed, the frequency and amplitude of the vibration are not exactly the same at different injection pressures. In order to ensure that the real-time data acquisition module and the vibration analysis module can cooperate to better adjust the vibration conditions in more cases and reduce vibration, in this embodiment, a reference vibration mode is set: under a specific injection pressure A, a vibration change mode is recorded, that is, first the vibration frequency is 5, the vibration amplitude is 3, and the vibration mode changes: then, the vibration mode changes according to a certain rule, first the vibration frequency drops to 4, the vibration amplitude increases to 4, and then changes to a vibration frequency of 3, and the vibration amplitude increases to 6; Vibration prediction: When the vibration frequency is 5 and the vibration amplitude is 3, the next vibration mode is predicted based on the previously recorded vibration mode change pattern. In this example, the predicted mode is a vibration frequency of 4 and a vibration amplitude of 4, followed by a vibration frequency of 3 and a vibration amplitude of 6. Adaptive adjustment: Based on the predicted vibration pattern, the system can make adjustments in advance to adapt to the upcoming vibration changes, so as to better reduce vibration and optimize the operation status of the machine. In addition, by monitoring and analyzing the vibration pattern of the injection molding machine, its future vibration conditions can be predicted, and adaptive adjustments can be made in advance accordingly to reduce vibration and improve machine performance. The above 3, 4, 5 and 6 are only used to better understand the adjustment situation.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A stable control system for a high-speed injection molding machine, comprising a stable machine platform for the high-speed injection molding machine, characterized in that: The stable machine platform of the high-speed injection molding machine includes a support structure, a transmission structure respectively arranged on the support structure and a mold opening and closing structure connected to the transmission structure, and an intelligent electronic control system for controlling the motion accuracy, and the transmission structure and the mold opening and closing structure are both communicatively connected to the intelligent electronic control system; The support structure includes a bed and a frame arranged on the bed, and the bed and the frame are both made of high-rigidity steel; the transmission structure includes a guide rail arranged on the bed and a lead screw matched with the guide rail, and the guide rail and the lead screw are both of high-precision design, and the matching between the guide rail and the lead screw is high-precision matching; the opening and closing mold structure is directly connected to the ball screw through an embedded direct-drive servo motor, and the ball screw serves as a clamping structure of the opening and closing mold structure directly driven by the iron core of the embedded direct-drive servo motor. The support structure, the transmission structure, the opening and closing mold structure and the intelligent electric control system cooperate as a whole to form a stable machine platform to reduce mechanical vibration; The embedded direct-drive servo motor fixes the magnetic steel inside the rotor through a salient pole embedded structure; The support structure, transmission structure and mold opening and closing structure are all provided with dampers and balance blocks for reducing vibration; The intelligent electric control system includes a control terminal and a servo motor control module that is communicatively connected to the control terminal, wherein the servo motor control module is communicatively connected to the control terminal via a servo driver control module, and the servo driver control module is used to receive signals from the control terminal and convert these signals into electrical signals that can be understood by the motor to drive the servo motor; The servo drive control module includes a three-loop control structure of a current loop, a speed loop and a position loop. The current loop, the speed loop and the position loop are nested with each other to form a control module. The current loop is used to adjust the torque of the servo motor, the speed loop is used to ensure that the servo motor runs at a set speed, and the position loop is used to accurately position the servo motor.

2. A stable control system for a high-speed injection molding machine according to claim 1, characterized in that: The servo drive control module also includes a multi-turn anti-vibration encoder connected to the motor shaft of the servo motor. The signal of the multi-turn anti-vibration encoder is compared with the set values ​​of the position loop and the speed loop to achieve closed-loop control.

3. A stable control system for a high-speed injection molding machine according to claim 1, characterized in that: The servo drive control module also includes an EtherCAT high-speed bus that matches the servo drive. The EtherCAT high-speed bus is used for data exchange between servo drives.

4. A stable control system for a high-speed injection molding machine according to claim 1, characterized in that: The servo drive has a built-in real-time overload algorithm, which enables the system to withstand 2.5 times the overload capacity in a short period of time.

5. A stable control system for a high-speed injection molding machine according to claim 1, characterized in that: The control terminal is also preset with a vibration monitoring module, which uses active or passive vibration suppression technology to monitor the vibration state of the machine in real time.

6. A stable control system for a high-speed injection molding machine according to claim 5, characterized in that: The control terminal is also preset with a software function module for adjusting the parameters of the servo motor in real time. The software function module includes a real-time data acquisition module, a vibration analysis module, a control parameter adjustment module and a vibration suppression instruction module. The real-time data acquisition module, the vibration analysis module, the control parameter adjustment module and the vibration suppression instruction module are all communicatively connected to the control terminal. The real-time data acquisition module is used to collect machine operation status data, the vibration analysis module is used to analyze data and identify vibration sources, the control parameter adjustment module is used to adjust PID parameters according to analysis results, and the vibration suppression instruction module is used to output control instructions and execute vibration suppression measures.

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