Electrical control system and method for fast locking of a slider on a carbon fiber short stroke press

Abstract

The application discloses a kind of carbon fiber short-stroke press upper slide quick locking electrical control system and method, belong to carbon fiber press technical field, comprising: upper slide driving cylinder displacement sensor, for detecting the real-time displacement data of upper slide four corners;Upper slide driving cylinder hydraulic system, for regulating and controlling the movement process of upper slide driving cylinder ejection and return;Upper slide driving cylinder, for driving upper slide down and up;Upper slide locking cylinder pressure sensor, for detecting the locking pressure of upper slide locking cylinder;Upper slide locking cylinder mechanical limit, for locking cylinder forward and backward stroke protection detection;Upper slide locking cylinder high-precision servo valve, for accurately control the oil flow of locking cylinder;Upper slide locking cylinder leak-free solenoid valve, for maintaining the pressure balance of upper slide locking cylinder;Upper slide locking cylinder, for driving upper slide fixed locking block forward and backward;PLC and industrial computer, the PLC respectively with industrial computer carries out data interaction.

Description

Technical Field

[0001] This invention belongs to the field of carbon fiber press technology, specifically relating to an electrical control system and method for rapid locking of the upper slider in a short-stroke carbon fiber press. Background Technology

[0002] With the increasing demands for lightweight and strength in aerospace and automotive parts, more and more lightweight, high-strength, corrosion-resistant, wear-resistant, and high-temperature-resistant carbon fiber composite parts are being introduced to the market, quickly becoming ideal substitutes for metal parts.

[0003] In the molding process of carbon fiber composite parts, the molding time is short, placing high demands on the press's operating speed and pressurization time. Traditional three-beam four-column presses suffer from long pressure-building strokes and large hydraulic fluid compression volumes, which to some extent prolong the pressurization time during molding. The carbon fiber short-stroke press differs from traditional presses in its mechanical structure, employing a beamless design with the pressurizing cylinder positioned at the bottom. This shortens the pressure-building cylinder stroke, reduces the number of cylinders, and lowers the hydraulic fluid compression volume, allowing the entire pressurization process to be completed within 0.5 seconds. The mechanical structure and inherent characteristics of the carbon fiber short-stroke press are highly suitable for the production process of carbon fiber composite materials, leading to its increasing adoption by more and more manufacturers and a growing market share year by year.

[0004] The upward and downward speeds of the upper slide in a carbon fiber short-stroke press are extremely high. The entire motion requires rapid acceleration, rapid deceleration, accurate positioning, and precise locking, placing extremely high demands on the entire electrical control system. The rapid locking of the upper slide during high-speed motion becomes a limiting factor affecting the stable operation of the carbon fiber short-stroke press. Therefore, the rapid locking control of the upper slide in the carbon fiber short-stroke press is particularly important in the entire electrical control system. Summary of the Invention

[0005] The purpose of this invention is to meet practical needs by providing an electrical control system and method for fast locking of the upper slider in a carbon fiber short-stroke press, which can quickly, accurately, and smoothly lock the upper slider.

[0006] To achieve the above-mentioned technical objectives, the first objective of this invention is to provide an electrical control system for rapid locking of the upper slide of a carbon fiber short-stroke press, comprising:

[0007] The upper slider drive cylinder displacement sensor is used to detect the real-time displacement data of the four corners of the upper slider;

[0008] The hydraulic system of the upper slider drive cylinder is used to control the ejection and retraction motion of the upper slider drive cylinder;

[0009] The upper slider drive cylinder is used to drive the upper slider to move downwards and upwards;

[0010] The upper slider locking cylinder pressure sensor is used to detect the locking pressure of the upper slider locking cylinder;

[0011] The upper slider locking cylinder mechanical limit is used for stroke protection detection of the locking cylinder during forward and backward movement;

[0012] The high-precision servo valve for the upper slider locking cylinder is used to precisely control the oil flow rate of the locking cylinder;

[0013] The leak-free solenoid valve for the upper slider locking cylinder is used to maintain the pressure balance of the upper slider locking cylinder;

[0014] The upper slider locking cylinder is used to drive the upper slider fixing locking block to move forward and backward;

[0015] The PLC is used to receive the data collected by the displacement sensor of the upper slide drive cylinder and the pressure sensor of the upper slide locking cylinder. Through analysis and processing of the collected data, it controls the hydraulic system of the upper slide drive cylinder, the mechanical limit of the upper slide locking cylinder, the high-precision servo valve of the upper slide locking cylinder, the leak-free solenoid valve of the upper slide locking cylinder, and the action of the upper slide locking cylinder, and adjusts the locking position of the upper slide and locks it quickly.

[0016] The industrial computer is used to display the position, speed, and pressure values ​​of the slide block on the carbon fiber short-stroke press, and simultaneously to set the system parameters; among which:

[0017] The PLCs interact with the industrial control computers.

[0018] Preferably, the analysis and processing specifically includes:

[0019] The PLC acquires real-time displacement data from the displacement sensor of the upper slider drive cylinder, and simultaneously uses a difference algorithm to calculate the difference between the four corners of the upper slider, detects the deviation of the four corners of the upper slider, and adjusts the parallelism of the upper slider in real time.

[0020] During the rapid descent of the upper slider, the PLC uses a multilinear formula to calculate the slider's speed, thereby accurately controlling the descent speed of the upper slider.

[0021] The PLC acquires real-time values ​​from the pressure sensor of the upper slider locking cylinder to achieve continuous monitoring of the upper slider locking cylinder pressure. At the same time, it adjusts the flow output of the locking cylinder hydraulic system by the changes in the upper slider locking cylinder pressure to avoid pressure overshoot and undershoot of the upper slider locking cylinder, and ensures precise control of the locking pressure of the upper slider locking cylinder.

[0022] The PLC acquires the real-time signal of the mechanical limit of the upper slider locking cylinder, detects whether the upper slider locking cylinder has reached the specified locking position, and protects the stroke of the upper slider locking cylinder.

[0023] The PLC determines when the upper slider has reached the predetermined locking position by analyzing the real-time displacement data from the displacement sensor of the upper slider drive cylinder. It then controls the upper slider locking cylinder to quickly lock the upper slider. The PLC also adjusts the opening value of the high-precision servo valve of the upper slider locking cylinder in real time to precisely control the drive flow of the upper slider locking cylinder. This allows for adjustment and locking of the speed at which the upper slider locking cylinder pushes the upper slider to fix the locking block. Simultaneously, the PLC uses a leak-free solenoid valve to adjust the locking pressure of the upper slider locking cylinder, maintaining a constant locking pressure and keeping the locking pressure balanced, thereby ensuring the locking position and locking accuracy.

[0024] The industrial control computer displays the position, speed, and pressure of the upper slider in real time during the rapid locking process of the upper slider in the carbon fiber short-stroke press. At the same time, it transmits the necessary setting parameters required for PLC control during the rapid movement and locking of the upper slider to the PLC.

[0025] Preferably, the difference algorithm compares the real-time displacement data of the four corners of the slider pairwise, calculates the difference between the high and low values, and obtains six sets of differences. These six sets of differences are then compared with the allowable deviation value. If any one of the six sets of differences is greater than the allowable deviation value, the result of excessive deviation is output to the PLC. Based on the calculation result of the difference algorithm, the PLC sends a command to the hydraulic system of the upper slider drive cylinder to continuously and precisely adjust the parallelism of the upper slider until all six sets of differences are within the allowable deviation value.

[0026] Preferably, the multiple linear formula is based on the linear formula Y=Kx+b, which is repeatedly called and optimized to accurately calculate the different oil supply required by the hydraulic system at different speeds of the upper slider; where: Y represents the output oil quantity of the upper slider drive system, K represents the compensation coefficient of the upper slider at different speeds, x represents the set speed of the upper slider, and b represents the initial oil quantity output by the drive system when the upper slider starts to move.

[0027] A second objective of this invention is to provide an electrical control method for rapid locking of a slide block in a carbon fiber short-stroke press, comprising:

[0028] S1. The upper slide of the carbon fiber short-stroke press is in the initial state. The PLC collects the real-time displacement data of the four corners of the upper slide. After detecting that the upper slide is in the initial position, it sends a command to unlock the upper slide locking cylinder, controls the opening value of the high-precision servo valve of the upper slide locking cylinder and conducts the non-leakage solenoid valve of the upper slide locking cylinder, so that the upper slide locking cylinder returns to the return limit of the locking cylinder, and completes the unlocking of the upper slide of the short-stroke press.

[0029] S2 and PLC control the hydraulic system of the upper slider drive cylinder, and use multiple linear formulas to calculate the running speed of the upper slider, driving the upper slider to descend quickly;

[0030] S3. When the upper slide of the carbon fiber short-stroke press approaches the set locking position, the PLC sends a command to the hydraulic system of the upper slide drive cylinder through linear calculation of position and speed, and controls the upper slide to perform flexible deceleration so that the upper slide can reach the set locking position smoothly and accurately.

[0031] S4. When the upper slide of the carbon fiber short-stroke press reaches the set locking position, the PLC adjusts the opening of the high-precision servo valve of the upper slide locking cylinder and simultaneously turns on the leak-free solenoid valve of the upper slide locking cylinder to provide the oil flow required for the upper slide locking cylinder to lock quickly. The upper slide locking cylinder pushes the upper slide fixing locking block to engage with the locking column and pushes the upper slide locking cylinder out to the extension limit of the locking cylinder to complete the quick locking.

[0032] During the rapid locking process of the upper slide locking cylinder of the S5 carbon fiber short-stroke press, the PLC collects the real-time feedback value of the pressure sensor of the upper slide locking cylinder and uses an interpolation algorithm to precisely adjust the locking pressure of the upper slide locking cylinder to maintain a constant upper slide locking force.

[0033] S6. After the carbon fiber short-stroke press pressing process is completed, the PLC sends a command to unlock the locking cylinder, controls the opening value of the high-precision servo valve of the upper slide locking cylinder and conducts the non-leakage solenoid valve of the locking cylinder, so that the upper slide locking cylinder returns to the return limit of the locking cylinder, completing the unlocking of the upper slide of the short-stroke press. The PLC sends a command to the hydraulic system of the upper slide drive cylinder, and the drive cylinder drives the upper slide to quickly move upward and return to the initial position of the upper slide.

[0034] S7, the PLC controls the upper slider locking cylinder again to complete the rapid locking of the upper slider, and the entire cycle ends.

[0035] Preferably, the parallelism of the upper slider is adjusted in real time during steps S2 and S3. Specifically, the PLC collects real-time displacement data from the displacement sensor of the upper slider drive cylinder and simultaneously uses a difference algorithm to calculate the difference between the four corners of the upper slider, detecting the deviation of the four corners of the upper slider. Real-time adjustment of the parallelism of the upper slider is performed during the rapid descent and flexible deceleration of the upper slider. The difference algorithm compares the real-time displacement data of the four corners of the slider pairwise, calculating the difference between the high and low values. The resulting six sets of differences are compared again with the allowable deviation value. If any one of the six sets of differences is greater than the allowable deviation value, the result of excessive deviation is output to the PLC. Based on the calculation result of the difference algorithm, the PLC sends instructions to the hydraulic system of the upper slider drive cylinder to continuously and precisely adjust the parallelism of the upper slider until all six sets of differences are within the allowable deviation value.

[0036] Preferably, the multiple linear formula is based on the linear formula Y=Kx+b, which is repeatedly called and optimized to accurately calculate the different oil supply required by the hydraulic system at different speeds of the upper slider; where: Y represents the output oil quantity of the upper slider drive system, K represents the compensation coefficient of the upper slider at different speeds, x represents the set speed of the upper slider, and b represents the initial oil quantity output by the drive system when the upper slider starts to move.

[0037] Compared with the prior art, the advantages and positive effects of this application are:

[0038] This invention solves a series of problems in the locking control of the upper slide block in short-stroke carbon fiber presses, such as inaccurate positioning during high-speed movement, insufficient locking speed, and uncontrollable locking force. By calculating the running speed of the upper slide block using a multilinear formula, commands are sent to precisely control the hydraulic system of the upper slide block drive cylinder. This allows the maximum running speed of the upper slide block in the short-stroke press to reach over 800 mm / s, and the working speed to reach over 80 mm / s. The entire downward and upward process can be controlled within 3 seconds. The control system precisely adjusts the opening of the high-precision servo valve of the upper slide block locking cylinder and simultaneously activates the leak-free solenoid valve of the upper slide block locking cylinder, providing the oil flow required for rapid locking of the upper slide block locking cylinder, thus achieving rapid locking. Simultaneously, the system collects the pressure of the upper slide block locking cylinder in real time and uses an interpolation algorithm to perform real-time calculations to precisely control the locking force of the upper slide block locking cylinder, maintaining a constant locking force. The successful invention of the electrical control system for rapid locking of the upper slide of a carbon fiber short-stroke press has greatly improved the operating status of the upper slide, saving operating time during the upward and downward movement of the upper slide. The locking system can quickly and accurately complete the locking process, and can also adjust the locking force of the locking cylinder in real time for precise control. This effectively improves the production efficiency of the carbon fiber short-stroke press, reduces production costs and energy consumption, and effectively improves product quality and yield. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A control principle diagram of a preferred embodiment of the present invention is shown;

[0041] Figure 2 A diagram of a hydraulic system according to an embodiment of the present invention is shown. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] like Figures 1 to 2 As shown, an electrical control system for rapid locking of the upper slide of a carbon fiber short-stroke press includes a PLC, an industrial computer, a displacement sensor for the upper slide drive cylinder, a hydraulic system for the upper slide drive cylinder, an upper slide drive cylinder, a pressure sensor for the upper slide locking cylinder, a mechanical limit switch for the upper slide locking cylinder, a high-precision servo valve for the upper slide locking cylinder, a leak-free solenoid valve for the upper slide locking cylinder, and the upper slide locking cylinder itself; wherein:

[0046] The upper slider drive cylinder displacement sensor 9 is used to detect the real-time displacement data of the four corners of the upper slider of the carbon fiber short stroke press;

[0047] The hydraulic system of the upper slider drive cylinder is used to control the ejection and retraction motion of the upper slider drive cylinder;

[0048] The upper slider drive cylinder 8 is used to drive the upper slider to move downwards and upwards;

[0049] Upper slider locking cylinder pressure sensor 1 is used to detect the locking pressure of the locking cylinder;

[0050] The upper slider locking cylinder mechanical limit 6 is used for stroke protection detection of the locking cylinder during forward and backward movement;

[0051] The high-precision servo valve 3 for the upper slider locking cylinder is used to precisely control the oil flow of the locking cylinder;

[0052] The leak-free solenoid valve 2 for the upper slider locking cylinder is used to maintain the pressure balance of the upper slider locking cylinder;

[0053] The upper slider locking cylinder 7 is used to drive the upper slider fixing locking block 5 to move forward and backward;

[0054] The PLC is used to receive the data collected by the displacement sensor of the upper slide drive cylinder and the pressure sensor of the upper slide locking cylinder. By analyzing and processing the collected data, it controls the hydraulic system of the upper slide drive cylinder and the actuator of the upper slide locking cylinder to adjust the locking position of the upper slide and lock it quickly.

[0055] The industrial computer is used to display the position, speed, and pressure values ​​of the slide block on the carbon fiber short-stroke press, and simultaneously to set the system parameters; among which:

[0056] The PLCs interact with the industrial control computers.

[0057] The displacement sensor of the upper slider drive cylinder, the pressure sensor of the upper slider locking cylinder, and the mechanical limit switch of the upper slider locking cylinder are connected to the main control PLC. The PLC sends commands to control the hydraulic system of the upper slider drive cylinder and the upper slider locking cylinder system in real time.

[0058] In the entire electrical control system for the rapid locking of the upper slide block in the carbon fiber short-stroke press, the industrial control computer (PC) displays the position, speed, and pressure values ​​of the upper slide block and simultaneously sets the system parameters. The PLC acquires real-time values ​​from the displacement sensors of the upper slide block drive cylinder and uses an interpolation algorithm to calculate and compare the differences between the four corner displacement sensors in real time, precisely controlling the hydraulic system of the upper slide block drive cylinder to drive the upper slide block to move upwards and downwards at high speed, stably, and precisely. After the upper slide block reaches the set locking position, the PLC adjusts the opening of the high-precision servo valve of the upper slide block locking cylinder and simultaneously activates the leak-free solenoid valve of the upper slide block locking cylinder, providing the oil flow required for rapid locking. The upper slide block locking cylinder pushes the upper slide block fixing locking block to engage with the locking column 4, and pushes the upper slide block locking cylinder out to its extension limit, completing the rapid locking. Simultaneously, the real-time feedback values ​​from the pressure sensor of the upper slide block locking cylinder are acquired, and an interpolation algorithm is used to precisely adjust the locking pressure of the upper slide block locking cylinder, maintaining a constant locking force on the upper slide block.

[0059] The analysis and processing specifically includes:

[0060] The PLC collects real-time data from the displacement sensors of the four corner drive cylinders of the press. Simultaneously, it uses a difference algorithm to calculate the differences at the four corners of the upper slide, detecting the corner deviations and adjusting the parallelism of the upper slide in real time. The difference algorithm compares the real-time data from the four corner displacement sensors pairwise, calculating the difference between the high and low values. The resulting six sets of differences are then compared with the allowable deviation value. If any of the six differences exceeds the allowable deviation value, the result indicating excessive deviation is output to the PLC. Based on the calculation results of the difference algorithm, the PLC sends instructions to the hydraulic system of the upper slide drive cylinders, continuously and precisely adjusting the parallelism of the upper slide.

[0061] During the rapid descent of the upper slide block, the PLC utilizes a multilinear formula to calculate the slide block's speed, thereby accurately controlling its descent velocity. The multilinear formula is based on the linear formula Y=Kx+b, repeatedly applied and optimized to precisely calculate the required hydraulic system oil supply at different slide block speeds. Thus, throughout the entire process of the upper slide block's start-up, acceleration, deceleration, and stop, the linear formula is used multiple times to adjust the hydraulic system's oil supply in real time, achieving accurate, flexible, and precise control of the upper slide block's descent velocity.

[0062] The PLC acquires real-time values ​​from the pressure sensor of the upper slider locking cylinder to achieve continuous monitoring of the upper slider locking cylinder pressure. At the same time, it adjusts the flow output of the locking cylinder hydraulic system by the changes in the upper slider locking cylinder pressure to avoid pressure overshoot and undershoot, and ensure precise control of the locking cylinder locking pressure.

[0063] The PLC acquires the real-time signal of the mechanical limit of the upper slider locking cylinder, detects whether the upper slider locking cylinder has reached the specified locking position, and protects the stroke of the upper slider locking cylinder.

[0064] The PLC collects data from the displacement sensors of the four corner drive cylinders of the upper slide block to determine when the upper slide block has reached the predetermined locking position, and controls the hydraulic locking system to quickly lock the upper slide block. The control system adjusts the opening value of the high-precision servo valve of the upper slide block locking cylinder in real time to precisely control the drive flow of the locking cylinder, thereby quickly adjusting the speed at which the locking cylinder pushes the upper slide block to fix the locking block, and achieving rapid locking. At the same time, the leak-free solenoid valve of the upper slide block locking cylinder is used to adjust the locking pressure of the locking cylinder, maintaining a constant locking pressure and keeping the locking pressure balanced, thus ensuring the locking position and locking accuracy.

[0065] The industrial control computer displays the position, speed, and pressure of the upper slider in real time during the rapid locking process of the upper slider in the carbon fiber short-stroke press. At the same time, it transmits the necessary setting parameters required for PLC control during the rapid movement and locking of the upper slider to the computer.

[0066] An electrical control method for rapid locking of the upper slider in a carbon fiber short-stroke press includes:

[0067] S1. The upper slider of the carbon fiber short-stroke press is in the initial state. The PLC collects the real-time values ​​of the displacement sensors of the four corner drive cylinders of the upper slider. After detecting that the upper slider of the carbon fiber short-stroke press is in the initial position, it sends a command to unlock the locking cylinder, controls the opening value of the high-precision servo valve of the locking cylinder and conducts the non-leakage solenoid valve of the locking cylinder, so that the upper slider locking cylinder returns to the return limit of the locking cylinder, thus completing the unlocking of the upper slider of the short-stroke press.

[0068] The S2.PLC controls the hydraulic system of the upper slider drive cylinder and uses a multilinear formula to calculate the running speed of the upper slider, driving the upper slider to descend rapidly.

[0069] S3. When the upper slide of the carbon fiber short-stroke press approaches the set locking position, the PLC sends a command to the hydraulic system of the upper slide drive cylinder through linear calculation of position and speed, controlling the upper slide to perform flexible deceleration, so that the upper slide can reach the set locking position smoothly and accurately.

[0070] S4. After the upper slide of the carbon fiber short-stroke press reaches the set locking position, the PLC quickly adjusts the opening of the high-precision servo valve of the upper slide locking cylinder and simultaneously activates the leak-free solenoid valve of the upper slide locking cylinder, providing the oil flow required for the upper slide locking cylinder to lock quickly. The upper slide locking cylinder pushes the upper slide fixing locking block to engage with the locking column, and pushes the upper slide locking cylinder out to its ejection limit, completing the rapid locking.

[0071] In the rapid locking process of the upper slide locking cylinder of the S5 carbon fiber short-stroke press, the PLC collects the real-time feedback value of the pressure sensor of the upper slide locking cylinder. Through an interpolation algorithm, the locking pressure of the upper slide locking cylinder is precisely adjusted to maintain a constant locking force. The interpolation algorithm calculates the initial value of the upper slide locking force using the linear formula Y=Kx+b, and then uses the PLC's timer interrupt function to compensate for the locking force of the upper slide in real time, always maintaining a constant locking force.

[0072] S6. After the carbon fiber short-stroke press pressing process is completed, the PLC sends a command to unlock the locking cylinder, controls the opening value of the high-precision servo valve of the locking cylinder, and activates the leak-free solenoid valve of the locking cylinder, causing the upper slide locking cylinder to retract to its return limit, thus unlocking the upper slide of the short-stroke press. The PLC then sends a command to the hydraulic system of the upper slide drive cylinder, which drives the upper slide to quickly move upward back to its initial position.

[0073] The S7 PLC controls the upper slider locking cylinder again to quickly lock the upper slider, ending the entire cycle.

[0074] Real-time adjustment of the upper slider parallelism is performed in S2 and S3. Specifically, the PLC collects real-time displacement data from the displacement sensor of the upper slider drive cylinder and simultaneously uses a difference algorithm to calculate the difference between the four corners of the upper slider, detecting the deviation of the four corners of the upper slider. Real-time adjustment of the upper slider parallelism is performed during the rapid descent and flexible deceleration of the upper slider. The difference algorithm compares the real-time displacement data of the four corners of the slider pairwise, and calculates the difference between the high and low values. The six sets of differences obtained are compared with the allowable deviation value. If any one of the six sets of differences is greater than the allowable deviation value, the result of excessive deviation is output to the PLC. The PLC sends a command to the hydraulic system of the upper slider drive cylinder based on the calculation result of the difference algorithm, continuously and precisely adjusting the parallelism of the upper slider until all six sets of differences are within the allowable deviation value.

[0075] The multiple linear formula is based on the linear formula Y=Kx+b, which is repeatedly called and optimized to accurately calculate the different oil supply required by the hydraulic system at different speeds of the upper slider; where: Y represents the output oil quantity of the upper slider drive system, K represents the compensation coefficient of the upper slider at different speeds, x represents the set speed of the upper slider, and b represents the initial oil quantity output by the drive system when the upper slider starts to move.

[0076] The above description is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An electrical control system for rapid locking of a slide block in a carbon fiber short-stroke press, characterized in that, include: The upper slider drive cylinder displacement sensor is used to detect the real-time displacement data of the four corners of the upper slider; The hydraulic system of the upper slider drive cylinder is used to control the ejection and retraction motion of the upper slider drive cylinder; The upper slider drive cylinder is used to drive the upper slider to move downwards and upwards; The upper slider locking cylinder pressure sensor is used to detect the locking pressure of the upper slider locking cylinder; The upper slider locking cylinder mechanical limit is used for stroke protection detection of the locking cylinder during forward and backward movement; The high-precision servo valve for the upper slider locking cylinder is used to precisely control the oil flow rate of the locking cylinder; The leak-free solenoid valve for the upper slider locking cylinder is used to maintain the pressure balance of the upper slider locking cylinder; The upper slider locking cylinder is used to drive the upper slider fixing locking block to move forward and backward; The PLC receives data from the displacement sensor of the upper slide block drive cylinder and the pressure sensor of the upper slide block locking cylinder. Through analysis and processing of the collected data, it controls the hydraulic system of the upper slide block drive cylinder, the mechanical limit switch of the upper slide block locking cylinder, the high-precision servo valve of the upper slide block locking cylinder, the leak-free solenoid valve of the upper slide block locking cylinder, and the actions of the upper slide block locking cylinder itself, adjusting the locking position and rapid locking of the upper slide block. Specifically, the analysis and processing includes: the PLC acquiring real-time displacement data from the displacement sensor of the upper slide block drive cylinder, and simultaneously using a difference algorithm to calculate the difference between the four corners of the upper slide block, detecting the four corner deviations of the upper slide block, and then... Real-time adjustment of the parallelism of the upper slider; during the rapid downward movement of the upper slider, the PLC uses a multilinear formula to calculate the slider speed, thereby accurately controlling the downward speed of the upper slider; the multilinear formula is based on the linear formula Y=Kx+b, which is repeatedly called and optimized to accurately calculate the different oil supply required by the hydraulic system at different speeds of the upper slider; where: Y represents the output oil quantity of the upper slider drive system, K represents the compensation coefficient of the upper slider at different speeds, x represents the set speed of the upper slider, and b represents the initial oil quantity output by the drive system when the upper slider starts to move; The industrial computer is used to display the position, speed, and pressure values ​​of the slide block on the carbon fiber short-stroke press, and simultaneously to set the system parameters; among which: The PLCs interact with the industrial control computers.

2. The electrical control system for rapid locking of the upper slider of the carbon fiber short-stroke press according to claim 1, characterized in that, The analysis and processing specifically also includes: The PLC acquires real-time values ​​from the pressure sensor of the upper slider locking cylinder to achieve continuous monitoring of the upper slider locking cylinder pressure. At the same time, it adjusts the flow output of the locking cylinder hydraulic system by the changes in the upper slider locking cylinder pressure to avoid pressure overshoot and undershoot of the upper slider locking cylinder, and ensures precise control of the locking pressure of the upper slider locking cylinder. The PLC acquires the real-time signal of the mechanical limit of the upper slider locking cylinder, detects whether the upper slider locking cylinder has reached the specified locking position, and protects the stroke of the upper slider locking cylinder. The PLC determines when the upper slider has reached the predetermined locking position by analyzing the real-time displacement data from the displacement sensor of the upper slider drive cylinder. It then controls the upper slider locking cylinder to quickly lock the upper slider. The PLC also adjusts the opening value of the high-precision servo valve of the upper slider locking cylinder in real time to precisely control the drive flow of the upper slider locking cylinder. This allows for adjustment and locking of the speed at which the upper slider locking cylinder pushes the upper slider to fix the locking block. Simultaneously, the PLC uses a leak-free solenoid valve to adjust the locking pressure of the upper slider locking cylinder, maintaining a constant locking pressure and keeping the locking pressure balanced, thereby ensuring the locking position and locking accuracy. The industrial control computer displays the position, speed, and pressure of the upper slider in real time during the rapid locking process of the upper slider in the carbon fiber short-stroke press. At the same time, it transmits the necessary setting parameters required for PLC control during the rapid movement and locking of the upper slider to the PLC.

3. The electrical control system for rapid locking of the upper slider of the carbon fiber short-stroke press according to claim 2, characterized in that, The difference algorithm compares the real-time displacement data of the four corners of the slider pairwise, calculates the difference between the high and low values, and obtains six sets of differences. These six sets of differences are then compared with the allowable deviation value. If any of the six sets of differences is greater than the allowable deviation value, the result of excessive deviation is output to the PLC. Based on the calculation result of the difference algorithm, the PLC sends instructions to the hydraulic system of the upper slider drive cylinder to continuously and precisely adjust the parallelism of the upper slider until all six sets of differences are within the allowable deviation value.

4. A method for rapid locking of the upper slider of a carbon fiber short-stroke press using the rapid locking electrical control system for the upper slider of a carbon fiber short-stroke press according to any one of claims 1-3, characterized in that, include: S1. The upper slide of the carbon fiber short-stroke press is in the initial state. The PLC collects the real-time displacement data of the four corners of the upper slide. After detecting that the upper slide is in the initial position, it sends a command to unlock the upper slide locking cylinder, controls the opening value of the high-precision servo valve of the upper slide locking cylinder and conducts the non-leakage solenoid valve of the upper slide locking cylinder, so that the upper slide locking cylinder returns to the return limit of the locking cylinder, and completes the unlocking of the upper slide of the short-stroke press. S2 and PLC control the hydraulic system of the upper slider drive cylinder, and use multiple linear formulas to calculate the running speed of the upper slider, driving the upper slider to descend quickly; S3. When the upper slide of the carbon fiber short-stroke press approaches the set locking position, the PLC sends a command to the hydraulic system of the upper slide drive cylinder through linear calculation of position and speed, and controls the upper slide to perform flexible deceleration so that the upper slide can reach the set locking position smoothly and accurately. S4. When the upper slide of the carbon fiber short-stroke press reaches the set locking position, the PLC adjusts the opening of the high-precision servo valve of the upper slide locking cylinder and simultaneously turns on the leak-free solenoid valve of the upper slide locking cylinder to provide the oil flow required for the upper slide locking cylinder to lock quickly. The upper slide locking cylinder pushes the upper slide fixing locking block to engage with the locking column and pushes the upper slide locking cylinder out to the extension limit of the locking cylinder to complete the quick locking. During the rapid locking process of the upper slide locking cylinder of the S5 carbon fiber short-stroke press, the PLC collects the real-time feedback value of the pressure sensor of the upper slide locking cylinder and uses an interpolation algorithm to precisely adjust the locking pressure of the upper slide locking cylinder to maintain a constant upper slide locking force. S6. After the carbon fiber short-stroke press pressing process is completed, the PLC sends a command to unlock the locking cylinder, controls the opening value of the high-precision servo valve of the upper slide locking cylinder and conducts the non-leakage solenoid valve of the locking cylinder, so that the upper slide locking cylinder returns to the return limit of the locking cylinder, completing the unlocking of the upper slide of the short-stroke press. The PLC sends a command to the hydraulic system of the upper slide drive cylinder, and the drive cylinder drives the upper slide to quickly move upward and return to the initial position of the upper slide. S7, the PLC controls the upper slider locking cylinder again to complete the rapid locking of the upper slider, and the entire cycle ends.

5. The electrical control method for rapid locking of the upper slider of a carbon fiber short-stroke press according to claim 4, characterized in that: Real-time adjustment of the upper slider parallelism is performed in S2 and S3. Specifically, the PLC collects real-time displacement data from the displacement sensor of the upper slider drive cylinder and simultaneously uses a difference algorithm to calculate the difference between the four corners of the upper slider, detecting the deviation of the four corners of the upper slider. Real-time adjustment of the upper slider parallelism is performed during the rapid descent and flexible deceleration of the upper slider. The difference algorithm compares the real-time displacement data of the four corners of the slider pairwise, and calculates the difference between the high and low values. The six sets of differences obtained are compared with the allowable deviation value. If any one of the six sets of differences is greater than the allowable deviation value, the result of excessive deviation is output to the PLC. The PLC sends a command to the hydraulic system of the upper slider drive cylinder based on the calculation result of the difference algorithm, continuously and precisely adjusting the parallelism of the upper slider until all six sets of differences are within the allowable deviation value.

6. The electrical control method for rapid locking of the upper slider in a carbon fiber short-stroke press according to claim 4, characterized in that: The multiple linear formula is based on the linear formula Y=Kx+b, which is repeatedly called and optimized to accurately calculate the different oil supply required by the hydraulic system at different speeds of the upper slider; where: Y represents the output oil quantity of the upper slider drive system, K represents the compensation coefficient of the upper slider at different speeds, x represents the set speed of the upper slider, and b represents the initial oil quantity output by the drive system when the upper slider starts to move.

Images