A die-casting machine mold structure and control method

Abstract

The present invention provides a die-casting machine mold structure and control method, which relates to the field of mold manufacturing technology, including: step one, setting the initial control parameters of the injection molding machine according to the specification information of the die-cast product before die-casting production; step two, collecting the status information in the closed cavity during the die-casting process; step three, analyzing and judging the status information and the preset parameter range to generate corresponding signaling or signals; step four, after the slurry injection is completed, cooling water is introduced into the water channel holes of the fixed template and the movable template, and the flow rate of the cooling water is adjusted according to the mold temperature and the product cooling speed requirements. The present invention can accurately control the injection amount of the molding slurry through the coordinated work of the motor and the valve plate and the calculation based on flow and time, combined with the dynamic adjustment of the PID algorithm, effectively avoiding the problem of excessive or insufficient feeding, significantly improving the product molding quality, reducing the scrap rate, and reducing production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of mold manufacturing, and in particular to a die-casting machine mold structure and a control method. Background Art

[0002] Die casting is an important metal casting process, widely used in various industries. The traditional die casting process mainly includes four basic steps: mold preparation, filling, injection, and sand removal.

[0003] In actual production, the existing mold structure has many shortcomings. During the injection molding stage, the flow channel between the injection molding machine and the mold spray nozzle limits the injection molding machine's control accuracy over the slurry, and overfeeding often occurs, which in turn affects the product molding effect and leads to an increase in the scrap rate. At the same time, in the cooling and demolding links of the mold, there is a lack of effective control means, and it is impossible to make precise adjustments based on product characteristics and production conditions. This not only prolongs the production cycle, but may also damage the product during the demolding process. As the market's requirements for die-cast product quality and production efficiency continue to increase, it is necessary to provide a die-casting machine mold structure and control method to solve the above technical problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a die-casting machine mold structure and control method, which solves the problems of inaccurate slurry feed control, poor product molding quality, and low production efficiency in the prior art by optimizing the mold structure and innovating the control strategy, and realizes the intelligence, efficiency, and precision of the die-casting production process.

[0005] In order to solve the above technical problems, the present invention provides a die-casting machine mold structure, including a fixed mold plate, the bottom surface of the fixed mold plate is provided with a groove according to the product specifications, the bottom surface of the fixed mold plate is abutted with a movable mold plate, the top surface of the movable mold plate is provided with a groove according to the product specifications, the grooves of the fixed mold plate and the movable mold plate together constitute a closed mold cavity, the fixed mold plate is installed on the fixed mold assembly, and the movable mold plate is installed on the movable mold assembly.

[0006] Preferably, the fixed mold assembly includes a top plate, a plurality of countersunk holes are opened around the top surface of the top plate, connecting bolts are provided in the countersunk holes, and the connecting bolts are screwed into the threaded holes corresponding to the top surface of the fixed mold plate, water channel holes are opened around the outer side surface of the fixed mold plate, and a flow channel assembly is provided in the middle of the top surface of the top plate.

[0007] Preferably, the movable mold assembly includes a base plate, a plurality of countersunk holes are opened around the bottom surface of the base plate, long-handled bolts are provided in the countersunk holes, the long-handled bolts pass through the square iron, the bottom surface of the square iron abuts the top surface of the base plate, the top surface of the square iron abuts the bottom surface of the movable template, the top end of the long-handled bolts is screwed into the threaded holes corresponding to the bottom surface of the movable template, water channel holes are opened around the outer side surface of the movable template, and a ejection structure is provided between the top surface of the base plate and the bottom surface of the movable template.

[0008] Preferably, the ejection structure includes an upper ejector plate, the bottom surface of the upper ejector plate is fixed with a lower ejector plate by bolts, four guide post mounting holes are opened around the bottom surface of the upper ejector plate, ejector plate guide posts are provided in the guide post mounting holes, the top ends of the ejector plate guide posts are cooperated with the guide post holes opened on the bottom surface of the dynamic template, a plurality of ejector pin mounting holes are evenly opened in the middle of the bottom surface of the upper ejector plate, ejector pins are provided in the ejector pin mounting holes, the top ends of the ejector pins are cooperated with the ejector pin holes opened on the bottom surface of the dynamic template, a plurality of support posts are fixed to the middle of the top surface of the upper ejector plate by connecting bolts, and the top surfaces of the support posts abut against the dynamic template.

[0009] Preferably, the flow channel assembly includes a flow channel plate, which is installed and fixed in the middle of the top surface of the top plate, and a valve body is installed and fixed in the middle of the top surface of the flow channel plate, and a motor is installed on one side of the top surface of the valve body, and the lower end of the motor passes through the top surface of the valve body and is connected to a worm, and one side of the worm is engaged and meshed with a worm gear, and the worm gear is installed and fixed on the valve stem, and the valve stem is horizontally rotatable and connected to the valve body, and a valve plate is provided in the middle of the outer side surface of the valve stem, and the outer side surface of the valve plate abuts against the valve pipe, and the valve pipe is embedded in the valve body, and the valve pipe is installed and connected to a connecting pipe through a flange ring.

[0010] A control method using the above die-casting machine mold structure includes the following steps:

[0011] Step 1: Before die-casting production, set the initial control parameters of the injection molding machine according to the specification information of the die-casting product;

[0012] Step 2: During the die-casting process, collect state information in the closed cavity; the state information includes pressure, temperature and flow rate of the molding slurry in the cavity;

[0013] Step 3: Analyze and judge based on the status information and the preset parameter range:

[0014] S31, when the pressure exceeds a preset upper pressure limit or the temperature exceeds a preset upper temperature limit, an injection molding parameter adjustment signal or a mold cooling signal is generated;

[0015] S32, at the same time, the volume of the injected slurry is calculated according to the flow rate and time of the forming slurry; when the volume of the injected slurry is greater than the preset slurry threshold, a motor start signal is generated;

[0016] Step 4: After the slurry injection is completed, cooling water is introduced into the water holes of the fixed template and the movable template. The flow rate of the cooling water is adjusted according to the mold temperature and the product cooling speed requirements.

[0017] Preferably, based on step three, when generating the motor start signal, the injection molding parameter adjustment signal or the mold cooling signal, a PID algorithm is used for dynamic adjustment, specifically:

[0018] Obtain the pressure, temperature, and injected slurry volume in the mold cavity; calculate the difference between the pressure, temperature, and injected slurry volume in the mold cavity at any time and their corresponding preset target values ​​to obtain a target deviation value; calculate the corresponding control quantity using the PID control algorithm based on the target deviation value;

[0019] According to the control amount corresponding to the pressure, temperature or injected slurry volume, the injection pressure, mold temperature or motor speed of the injection molding machine are adjusted.

[0020] Preferably, the flow rate of cooling water is adjusted according to the mold temperature and product cooling rate requirements, and the specific steps are as follows:

[0021] The moment when cooling water is introduced into the water passage holes of the fixed template and the movable template is regarded as the water injection moment, the time period between the current moment and the water injection moment is recorded as the cooling monitoring time zone, and the length of time for identifying the cooling monitoring time zone is recorded as the cooling monitoring duration;

[0022] Obtain the mold temperature at any moment in the cooling monitoring time zone, and calculate the temperature trend value by using the standard deviation formula for the mold temperature in the cooling monitoring time zone;

[0023] Obtain the preset demoulding temperature, and subtract the preset demoulding temperature from the current mold temperature to obtain the demoulding temperature difference;

[0024] The demolding impact value is obtained by weighted calculation of the cooling monitoring time, temperature change trend value and demolding temperature difference value. If the demolding impact value is greater than its demolding threshold, a demolding signal is generated. The demolding signal is used to trigger the control of the die-casting machine to separate the fixed platen and the movable platen, and at the same time start the ejection structure. Under the action of the power device, the upper ejector plate of the ejector structure moves upward along the ejector plate guide column, and the product is ejected from the mold by the ejector, completing the demolding process.

[0025] Preferably, based on step three, step five is further included, which is to control the corresponding equipment to perform corresponding operations when the motor start signal, injection molding parameter adjustment signal or mold cooling signal is generated, specifically:

[0026] When the motor start signal is generated, the motor is triggered to start, and the output shaft of the motor drives the worm to rotate, which drives the worm gear to rotate the valve stem, thereby making the valve plate tightly contact with the valve pipe, closing the flow channel and stopping the slurry injection;

[0027] When the injection molding parameter adjustment signal is generated, the injection pressure of the injection molding machine is adjusted;

[0028] When the mold cooling signal is generated, the cooling system of the mold pair is triggered to start.

[0029] Compared with related technologies, the die-casting machine mold structure and control method provided by the present invention have the following beneficial effects:

[0030] 1. The present invention uses the coordinated work of the motor and valve plate, as well as flow rate and time-based calculations, combined with PID algorithm dynamic adjustment to accurately control the injection volume of the molding slurry, effectively avoiding the problem of overfeed or underfeed, significantly improving product molding quality, reducing scrap rate, and reducing production costs.

[0031] 2. The present invention intelligently adjusts the cooling water flow rate according to the mold temperature and product cooling speed requirements, and combines a demoulding judgment mechanism based on multiple parameter calculations to achieve efficient cooling and precise demoulding, shortening the production cycle, reducing the risk of product damage during the cooling and demoulding process, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A three-dimensional diagram of the appearance of a die-casting machine mold structure provided by the present invention;

[0033] Figure 2 A three-dimensional diagram of an ejection structure of a die-casting machine mold structure provided by the present invention;

[0034] Figure 3 A partial cross-sectional schematic diagram of a flow channel assembly of a die-casting machine mold structure provided by the present invention;

[0035] Figure 4 This is a flow chart of a method for controlling a die-casting machine mold structure provided by the present invention.

[0036] Numbers in the figure: 1. Fixed template; 2. Moving template; 3. Top plate; 4. Bottom plate; 5. Square iron; 7. Upper ejector plate; 8. Lower ejector plate; 9. Ejector plate guide column; 10. Ejector; 11. Support column; 12. Flow channel plate; 13. Valve body; 14. Motor; 15. Worm; 16. Worm gear; 17. Valve stem; 18. Valve plate; 19. Valve pipe; 20. Connecting pipe. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "group," "class," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0039] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0040] Example 1:

[0041] Please refer to Figures 1-4 A die-casting machine mold structure includes a fixed platen 1, the bottom surface of which is provided with a groove according to product specifications. The bottom surface of the fixed platen 1 abuts against a movable platen 2, and the top surface of the movable platen 2 is provided with a groove according to product specifications. The grooves of the fixed platen 1 and the movable platen 2 together form a closed cavity. The fixed platen 1 is mounted on the fixed mold assembly, and the movable platen 2 is mounted on the movable mold assembly.

[0042] In the present invention, the fixed mold assembly includes a top plate 3, a plurality of countersunk holes are opened around the top surface of the top plate 3, connecting bolts are provided in the countersunk holes, and the connecting bolts are screwed into the corresponding threaded holes on the top surface of the fixed mold plate 1. Water channel holes are opened around the outer side surface of the fixed mold plate 1, and a flow channel assembly is provided in the middle of the top surface of the top plate 3.

[0043] In the present invention, the movable mold assembly includes a base plate 4, and a plurality of countersunk holes are opened around the bottom surface of the base plate 4. Long-handled bolts are provided in the countersunk holes. The long-handled bolts pass through the square iron 5. The bottom surface of the square iron 5 abuts the top surface of the base plate 4. The top surface of the square iron 5 abuts the bottom surface of the movable template 2. The top end of the long-handled bolt is screwed into the threaded hole corresponding to the bottom surface of the movable template 2. Waterway holes are opened around the outer side surface of the movable template 2. A ejection structure is provided between the top surface of the base plate 4 and the bottom surface of the movable template 2.

[0044] In the present invention, the ejection structure includes an upper ejector plate 7, the bottom surface of the upper ejector plate 7 is fixed with a lower ejector plate 8 by bolts, four guide column mounting holes are opened around the bottom surface of the upper ejector plate 7, and ejector plate guide columns 9 are provided in the guide column mounting holes. The top ends of the ejector plate guide columns 9 are cooperated with the guide column holes opened on the bottom surface of the dynamic template 2. A plurality of ejector mounting holes are evenly opened in the middle of the bottom surface of the upper ejector plate 7, and an ejector 10 is provided in the ejector mounting hole. The top ends of the ejector pins 10 are cooperated with the ejector holes opened on the bottom surface of the dynamic template 2. A plurality of support columns 11 are installed and fixed with connecting bolts in the middle of the top surface of the upper ejector plate 7, and the top surfaces of the support columns 11 abut against the dynamic template 2.

[0045] In the present invention, the flow channel assembly includes a flow channel plate 12, which is installed and fixed in the middle of the top surface of the top plate 3, and a valve body 13 is installed and fixed in the middle of the top surface of the flow channel plate 12. A motor 14 is installed on one side of the top surface of the valve body 13. The lower end of the motor 14 passes through the top surface of the valve body 13 and is connected to a worm 15. One side of the worm 15 is engaged and connected with a worm gear 16. The worm gear 16 is installed and fixed on the valve stem 17. The valve stem 17 is horizontally rotatable and connected to the valve body 13. A valve plate 18 is provided in the middle of the outer side surface of the valve stem 17. The outer side surface of the valve plate 18 abuts against the valve pipe 19. The valve pipe 19 is embedded in the valve body 13, and the valve pipe 19 is installed and connected to the connecting pipe 20 through a flange ring.

[0046] Example 2:

[0047] Based on Example 1, the present invention further provides a control method using the above die-casting machine mold structure, comprising the following steps:

[0048] Step 1: Before die-casting production, the initial control parameters of the injection molding machine are set according to the specification information of the die-cast product; the initial control parameters include the initial injection pressure, injection speed, mold temperature of the injection molding machine and the initial control parameters of the motor 14;

[0049] Step 2: During the die-casting process, collect state information in the closed cavity; the state information includes the pressure P, temperature T and flow rate Q of the molding slurry in the cavity;

[0050] Step 3: Analyze and judge based on the status information and the preset parameter range:

[0051] S31, when the pressure P exceeds a preset upper pressure limit or the temperature T exceeds a preset upper temperature limit, an injection molding parameter adjustment signal or a mold cooling signal is generated;

[0052] S32, at the same time, calculate the volume of the injected slurry according to the flow rate Q of the forming slurry and the time t , the calculation formula is When the slurry volume is injected When the value is greater than a preset slurry threshold, a start signal for the motor 14 is generated;

[0053] Step 4: After the slurry injection is completed, cooling water is introduced into the water channel holes of the fixed template 1 and the movable template 2. The flow rate of the cooling water is adjusted according to the mold temperature and the product cooling speed requirements.

[0054] In the present invention, based on step three, when generating the motor 14 start signal, injection molding parameter adjustment signaling or mold cooling signaling, a PID algorithm is used for dynamic adjustment, specifically:

[0055] Obtain the pressure P, temperature T and injected slurry volume in the cavity ; The pressure P, temperature T and injected slurry volume in the cavity at any time The target deviation value cet is obtained by performing difference calculation with the corresponding preset target value, where c=1, 2, and 3 represent the numbers corresponding to pressure, temperature, and injected slurry volume, respectively. The corresponding control quantity cn is calculated using the PID control algorithm based on the target deviation value. The formula of the PID control algorithm is: , is the proportionality coefficient, is the integration coefficient, is the differential coefficient;

[0056] According to the control amount corresponding to the pressure, temperature or injected slurry volume, the injection pressure, mold temperature or the speed of the motor 14 of the injection molding machine is adjusted:

[0057] When c=1, 1n represents the control amount corresponding to the pressure, and the injection pressure of the injection molding machine is adjusted by the control amount 1n;

[0058] When c=2, 2n represents the control amount corresponding to the temperature, and the mold temperature of the injection molding machine is adjusted by the control amount 2n;

[0059] When c=3, 3n represents the control amount corresponding to the volume of injected slurry, and the speed of the motor 14 is adjusted by the control amount 3n.

[0060] In the present invention, the flow rate of cooling water is adjusted according to the mold temperature and product cooling rate requirements, and the specific steps are as follows:

[0061] The moment when cooling water is introduced into the water passage holes of the fixed template 1 and the movable template 2 is regarded as the water injection moment, the time period between the current moment and the water injection moment is recorded as the cooling monitoring time zone, and the time length for identifying the cooling monitoring time zone is recorded as the cooling monitoring time length TF1;

[0062] Obtain the mold temperature T at any moment in the cooling monitoring time zone, and calculate the temperature change trend value TF2 by using the standard deviation formula for the mold temperature in the cooling monitoring time zone;

[0063] Obtain the preset demoulding temperature, and subtract the preset demoulding temperature from the current mold temperature to obtain the demoulding temperature difference TF3;

[0064] The demoulding influence value TF is obtained by weighted calculation of the cooling monitoring time, temperature change trend value and demoulding temperature difference value. The weighted calculation formula is: , where f1, f2, and f3 represent the weighted influencing factors corresponding to the cooling monitoring time, temperature change trend value, and demoulding temperature difference value, respectively;

[0065] If the demoulding impact value is greater than its demoulding threshold, a demoulding signal is generated; the demoulding signal is used to trigger the control of the die-casting machine to separate the fixed plate 1 and the movable plate 2, and at the same time start the ejection structure. Under the action of the power device, the upper ejector plate 7 of the ejector structure moves upward along the ejector plate guide column 9, and the product is ejected from the mold through the ejector 10, completing the demoulding process.

[0066] In the present invention, based on step three, step five is also included, which controls the corresponding equipment to perform corresponding operations when generating the motor 14 start signal, injection parameter adjustment signaling or mold cooling signaling, specifically:

[0067] When the motor 14 starts, the motor 14 is triggered to start. The output shaft of the motor 14 drives the worm 15 to rotate, which drives the worm gear 16 to rotate the valve stem 17, thereby making the valve plate 18 tightly contact with the valve tube 19, closing the flow channel and stopping the slurry injection.

[0068] When receiving the injection molding parameter adjustment signal, trigger the adjustment of the injection molding machine's injection pressure;

[0069] When the mold cooling signal is received, the cooling system of the mold pair is triggered to start.

[0070] The working principle of the die casting machine mold structure and control method provided by the present invention is as follows:

[0071] Before die-casting production, the initial parameters of the injection molding machine and motor 14 equipment are set according to product specifications to lay the foundation for the die-casting process;

[0072] After die-casting begins, the injection molding machine injects molten slurry into the valve tube 19 through the connecting tube 20, and then into the mold cavity through the runner plate 12. During this process, the sensor continuously collects the pressure P, temperature T, and slurry flow rate Q in the cavity. When the pressure P or temperature T exceeds the preset range, a corresponding control signal is generated, such as an injection parameter adjustment signal or a mold cooling signal. The injection molding machine's injection pressure and mold temperature are adjusted using the PID algorithm to ensure the stability of the die-casting process and product quality. At the same time, the volume of injected slurry is calculated based on the flow rate Q and time t. When the preset slurry threshold is reached, the motor 14 starts, driving the valve stem 17 to rotate through the worm 15 and worm gear 16, causing the valve plate 18 to close the runner and accurately control the slurry inflow.

[0073] After the slurry injection is completed, cooling water is introduced into the water channel hole of the mold, and the cooling water flow is adjusted in real time according to the mold temperature; the demolding impact value is obtained by weighted calculation of the cooling monitoring time, temperature change trend value and demolding temperature difference value. When the demolding impact value is greater than the demolding threshold, a demolding signal is generated; at this time, the die-casting machine separates the fixed plate 1 and the movable plate 2, and the ejection structure is started. Under the action of the power device, the upper ejector plate 7 rises along the ejector plate guide column 9, and the ejector 10 ejects the product from the mold, completing the entire die-casting process; through this closed-loop control method, precise control of the slurry feed amount, temperature, and pressure parameters in the die-casting process, as well as efficient cooling and demolding operations are achieved, thereby improving product quality and production efficiency.

[0074] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0075] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A control method for a die-casting machine mold structure, which is applied to the production of a die-casting machine mold structure. The die-casting machine mold structure includes a fixed mold plate (1), characterized in that: The bottom surface of the fixed template (1) is provided with a groove according to product specifications, the bottom surface of the fixed template (1) abuts against the movable template (2), the top surface of the movable template (2) is provided with a groove according to product specifications, the grooves of the fixed template (1) and the movable template (2) together form a closed cavity, the fixed template (1) is mounted on the fixed mold assembly, and the movable template (2) is mounted on the movable mold assembly; The fixed mold assembly comprises a top plate (3), a plurality of countersunk holes are provided around the top surface of the top plate (3), connecting bolts are provided in the countersunk holes, and the connecting bolts are screwed and connected in the corresponding threaded holes on the top surface of the fixed mold plate (1), water channel holes are provided around the outer side surface of the fixed mold plate (1), and a flow channel assembly is provided in the middle of the top surface of the top plate (3); The flow channel assembly includes a flow channel plate (12), the flow channel plate (12) is fixed to the middle of the top surface of the top plate (3), a valve body (13) is fixed to the middle of the top surface of the flow channel plate (12), a motor (14) is installed on one side of the top surface of the valve body (13), the lower end of the motor (14) passes through the top surface of the valve body (13) and is connected to a worm (15), one side of the worm (15) is engaged and connected with a worm gear (16), the worm gear (16) is installed and fixed on a valve stem (17), the valve stem (17) is horizontally rotatably connected to the valve body (13), a valve plate (18) is provided in the middle of the outer side surface of the valve stem (17), the outer side surface of the valve plate (18) abuts against the inside of a valve pipe (19), the valve pipe (19) is embedded in the valve body (13), and the valve pipe (19) is installed and connected to a connecting pipe (20) through a flange ring; Wherein, the movable mold assembly includes a bottom plate (4), and an ejection structure is provided between the top surface of the bottom plate (4) and the bottom surface of the movable mold plate (2); the ejection structure includes an upper ejector plate (7), and the bottom surface of the upper ejector plate (7) is fixed with a lower ejector plate (8) by bolt connection, and four guide column mounting holes are provided around the bottom surface of the upper ejector plate (7), and ejector plate guide columns (9) are provided in the guide column mounting holes, and the top ends of the ejector plate guide columns (9) are matched and provided in the guide column holes provided in the bottom surface of the movable mold plate (2), and a plurality of ejector mounting holes are evenly provided in the middle of the bottom surface of the upper ejector plate (7), and ejector pins (10) are provided in the ejector mounting holes; The control method includes the following steps: Step 1: Before die-casting production, set the initial control parameters of the injection molding machine according to the specification information of the die-casting product; Step 2: During the die-casting process, collect state information in the closed cavity; the state information includes pressure, temperature and flow rate of the molding slurry in the cavity; Step 3: Analyze and judge based on the status information and the preset parameter range: S31, when the pressure exceeds a preset upper pressure limit or the temperature exceeds a preset upper temperature limit, an injection molding parameter adjustment signal or a mold cooling signal is generated; S32, at the same time, the volume of the injected slurry is calculated according to the flow rate and time of the forming slurry; when the volume of the injected slurry is greater than a preset slurry threshold, a motor (14) start signal is generated; When generating a motor (14) start signal, an injection molding parameter adjustment signal, or a mold cooling signal, a PID algorithm is used for dynamic adjustment, specifically: obtaining the pressure, temperature, and injected slurry volume in the mold cavity; performing a difference calculation between the pressure, temperature, and injected slurry volume in the mold cavity at any moment and their corresponding preset target values ​​to obtain a target deviation value; calculating the corresponding control quantity using the PID control algorithm based on the target deviation value; adjusting the injection pressure, mold temperature, or motor (14) speed of the injection molding machine according to the control quantity corresponding to the pressure, temperature, or injected slurry volume; Step 4: After the slurry injection is completed, cooling water is introduced into the water channel holes of the fixed mold plate (1) and the movable mold plate (2). The flow rate of the cooling water is adjusted according to the mold temperature and the product cooling speed requirements. The specific steps are as follows: The moment when cooling water is introduced into the water passage holes of the fixed die plate (1) and the movable die plate (2) is regarded as the water injection moment, the time zone between the current moment and the water injection moment is recorded as the cooling monitoring time zone, and the time length of the cooling monitoring time zone is recorded as the cooling monitoring time length; the mold temperature at any moment in the cooling monitoring time zone is obtained, and the mold temperature in the cooling monitoring time zone is calculated using the standard deviation formula to obtain the temperature change trend value; the preset demoulding temperature is obtained, and the preset demoulding temperature difference value is subtracted from the current mold temperature; the cooling monitoring time length, the temperature change trend value and the demoulding temperature difference value are weightedly calculated to obtain the demoulding influence value; if the demoulding influence value is greater than its demoulding threshold, a demoulding signal is generated; the demoulding signal is used to trigger the control of the die-casting machine to separate the fixed die plate (1) and the movable die plate (2), and at the same time start the ejection structure, and the upper ejector plate (7) of the ejector structure moves upward along the ejector plate guide column (9) under the action of the power device, and the product is ejected from the mold through the ejector (10), completing the demoulding process.

2. The method for controlling a die casting machine mold structure according to claim 1, wherein: A plurality of countersunk holes are provided around the bottom surface of the base plate (4), long-shank bolts are provided in the countersunk holes, and the long-shank bolts pass through the square iron (5). The bottom surface of the square iron (5) abuts against the top surface of the base plate (4), and the top surface of the square iron (5) abuts against the bottom surface of the movable template (2). The top ends of the long-shank bolts are screwed into the corresponding threaded holes on the bottom surface of the movable template (2), and waterway holes are provided around the outer side surface of the movable template (2).

3. The method for controlling a die casting machine mold structure according to claim 1, wherein: The top end of the ejector pin (10) is fitted into an ejector pin hole provided on the bottom surface of the movable plate (2). A plurality of support columns (11) are fixed to the middle of the top surface of the upper ejector pin plate (7) via connecting bolts. The top surfaces of the support columns (11) abut against the movable plate (2).

4. The method for controlling a die casting machine mold structure according to claim 1, wherein: Based on step three, step five is also included, when generating a motor (14) start signal, an injection molding parameter adjustment signal or a mold cooling signal, controlling the corresponding device to perform a corresponding operation, specifically: When a start signal of the motor (14) is generated, the motor (14) is triggered to start, and the output shaft of the motor (14) drives the worm (15) to rotate, driving the worm gear (16) to rotate the valve stem (17), thereby causing the valve plate (18) to abut tightly against the valve tube (19), closing the flow channel and stopping the slurry injection; When the injection molding parameter adjustment signal is generated, the injection pressure of the injection molding machine is adjusted; When the mold cooling signal is generated, the cooling system of the mold pair is triggered to start.

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