Die-casting machine die structure and control method

Abstract

The invention provides a die-casting machine die structure and a control method, and relates to the technical field of die manufacturing, and the control method comprises the following steps: step 1, setting initial control parameters of an injection molding machine according to specification information of a die-casting product before die-casting production; secondly, in the die casting process, state information in the closed cavity is collected; 3, analyzing and judging according to the state information and a preset parameter range to generate a corresponding signaling or signal; and 4, after slurry injection is completed, cooling water is introduced into the waterway holes of the fixed mold plate and the movable mold plate, and the flow of the cooling water is adjusted according to the mold temperature and the product cooling speed requirement. Through cooperative work of the motor and the valve plate, calculation based on flow and time and combination of dynamic adjustment of a PID algorithm, the injection amount of forming slurry can be accurately controlled, the problem of too much or too little feeding is effectively avoided, the product forming quality is remarkably improved, the rejection rate is reduced, and the production cost is reduced.

Description

Technical Field

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

[0002] Die casting, as an important metal casting process, is widely used in multiple industries. Traditional die-casting processes mainly include four basic steps: die preparation, filling, injection, and shakeout.

[0003] In actual production, there are many deficiencies in the existing die structure. During the injection stage, the runner between the injection molding machine and the die spray nozzle limits the control accuracy of the injection molding machine for the slurry, often resulting in excessive feeding, which in turn affects the product forming effect and increases the scrap rate. At the same time, in the cooling and demolding links of the die, there are no effective control means and it is impossible to accurately adjust according to the product characteristics and production conditions, which not only prolongs the production cycle but also may damage the product during the demolding process. With the continuous improvement of the market's requirements for the quality and production efficiency of die-cast products, it is necessary to provide a die-casting machine die structure and a 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 die structure and a control method thereof. By optimizing the die structure and innovating the control strategy, the problems of inaccurate control of the slurry feeding amount, poor product forming quality, and low production efficiency in the existing technology are solved, and the intelligent, efficient, and precise die-casting production process is realized.

[0005] To solve the above technical problems, a die-casting machine die structure provided by the present invention includes a fixed template. Grooves are provided on the bottom surface of the fixed template according to the product specifications. A movable template abuts against the bottom surface of the fixed template. Grooves are provided on the top surface of the movable template according to the product specifications. The grooves of the fixed template and the movable template together form a closed cavity. The fixed template is installed on a fixed die assembly, and the movable template is installed on a movable die assembly.

[0006] Preferably, the fixed die assembly includes a top plate. A plurality of countersunk holes are provided around the top surface of the top plate. Connecting bolts are provided in the countersunk holes. The connecting bolts are screwed into the corresponding threaded holes on the top surface of the fixed template. Waterway holes are provided around the outer side surface of the fixed template. A runner assembly is provided in the middle of the top surface of the top plate.

[0007] Preferably, the movable die assembly includes a bottom plate. A plurality of countersunk holes are provided around the bottom surface of the bottom plate. Long-shank bolts are provided in the countersunk holes. The long-shank bolts penetrate through the square iron. The bottom surface of the square iron abuts against the top surface of the bottom plate. The top surface of the square iron abuts against the bottom surface of the movable template. The top ends of the long-shank bolts are screwed into the corresponding threaded holes on the bottom surface of the movable template. Waterway holes are provided around the outer side surface of the movable template. A ejecting structure is provided between the top surface of the bottom 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 fixedly connected by bolts to a lower ejector plate, four guide post mounting holes are formed around the bottom surface of the upper ejector plate, a ejector plate guide post is arranged in the guide post mounting hole, the top end of the ejector plate guide post is fitted in a guide post hole formed in the bottom surface of the moving template, a plurality of ejector pin mounting holes are evenly formed in the middle of the bottom surface of the upper ejector plate, an ejector pin is arranged in the ejector pin mounting hole, the top end of the ejector pin is fitted in an ejector pin hole formed in the bottom surface of the moving template, a plurality of support columns are fixedly installed on the middle of the top surface of the upper ejector plate through connection bolts, and the top surface of the support column abuts against the moving template.

[0009] Preferably, the runner assembly includes a runner plate, the runner plate is fixedly installed in the middle of the top surface of the top plate, a valve body is fixedly installed in the middle of the top surface of the runner plate, a motor is installed on one side of the top surface of the valve body, the lower end of the motor penetrates the top surface of the valve body and is connected to a worm, a worm gear is engaged and connected to one side of the worm, the worm gear is fixedly installed on a valve rod, the valve rod is horizontally rotatably connected in the valve body, a valve plate is arranged in the middle of the outer side surface of the valve rod, the outer side surface of the valve plate abuts against the inside of a valve pipe, the valve pipe is inlaid in the valve body, and the valve pipe is installed and connected with a connecting pipe through a flange ring.

[0010] A control method for adopting the die-casting machine die structure as described above includes the following steps: Step 1, set the initial control parameters of the injection molding machine according to the specification information of the die-casting product before die-casting production; Step 2, during die-casting, collect the state information in the closed cavity; the state information includes the pressure, temperature and the flow rate of the molding slurry in the cavity; Step 3, analyze and judge according to the state information and the preset parameter range: S31, when the pressure exceeds the preset pressure upper limit or the temperature exceeds the preset temperature upper limit, generate an injection molding parameter adjustment signal or a mold cooling signal; S32, at the same time, calculate the volume of the injected slurry according to the flow rate and time of the molding slurry; when the injected slurry volume is greater than the preset slurry threshold, generate a motor start signal; Step 4, after the slurry injection is completed, introduce cooling water into the water holes of the fixed template and the moving template, and the flow rate of the cooling water is adjusted according to the mold temperature and the product cooling speed requirements.

[0011] Preferably, based on Step 3, 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: Obtain the pressure, temperature, and injected slurry volume inside the cavity; calculate the difference between the pressure, temperature, and injected slurry volume at any moment inside the cavity and their corresponding preset target values to obtain the target deviation value; calculate the corresponding control quantity using the PID control algorithm through the target deviation value; Adjust the injection pressure of the injection molding machine, the mold temperature, or the rotation speed of the motor according to the control quantity corresponding to the pressure, temperature, or injected slurry volume.

[0012] Preferably, the flow rate of the cooling water is adjusted according to the mold temperature and the product cooling rate requirements. The specific steps are as follows: Take the moment when cooling water is introduced into the water holes of the fixed template and the moving template as the water injection moment, record the time area between the current moment and the water injection moment as the cooling monitoring time zone, and record the time length of the cooling monitoring time zone as the cooling monitoring duration; Obtain the mold temperature at any moment in the cooling monitoring time zone, and calculate the temperature change trend value using the standard deviation formula for the mold temperature in the cooling monitoring time zone; Obtain the preset demolding temperature, and subtract the preset demolding temperature from the current mold temperature to obtain the demolding temperature difference value; Perform a weighted calculation on the cooling monitoring duration, the temperature change trend value, and the demolding temperature difference value to obtain the demolding influence value; if the demolding influence value is greater than its demolding threshold, generate a demolding signal; the demolding signal is used to trigger the separation of the fixed template and the moving template of the die-casting machine, and at the same time start the ejection structure. The upper ejector plate of the ejection structure moves upward along the ejector plate guide column under the action of the power device, and the product is ejected from the mold through the ejector pins to complete the demolding process.

[0013] Preferably, based on step three, it further includes step five. When generating the motor start signal, the injection molding parameter adjustment signal, or the mold cooling signal, control the corresponding equipment to perform the corresponding operations, specifically: When generating the motor start signal, trigger the start of the motor. The output shaft of the motor drives the worm to rotate, driving the worm gear to make the valve stem rotate, thereby making the valve plate closely abut against the valve pipe, closing the flow channel, and stopping the injection of the slurry; When generating the injection molding parameter adjustment signal, trigger the adjustment of the injection pressure of the injection molding machine; When generating the mold cooling signal, trigger the start of the cooling system paired with the mold.

[0014] Compared with the related technology, a die-casting machine mold structure and control method provided by the present invention have the following beneficial effects: 1. Through the coordinated work of the motor and the valve plate, and the calculation based on flow rate and time, combined with dynamic adjustment using the PID algorithm, the present invention can accurately control the injection volume of the molding slurry, effectively avoid the problems of excessive or insufficient feeding, significantly improve the product molding quality, reduce the rejection rate, and reduce the production cost.

[0015] 2. The present invention intelligently adjusts the cooling water flow according to the requirements of the mold temperature and the product cooling rate, combines a demolding judgment mechanism based on the calculation of multiple parameters, realizes efficient cooling and precise demolding, shortens the production cycle, reduces the risk of product damage during the cooling and demolding processes, and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an external three-dimensional view of a die-casting machine mold structure provided by the present invention; Figure 2 is a three-dimensional view of the ejection structure of a die-casting machine mold structure provided by the present invention; Figure 3 is a partial sectional schematic view of the runner assembly of a die-casting machine mold structure provided by the present invention; Figure 4 is a flowchart of a control method for a die-casting machine mold structure provided by the present invention.

[0017] Reference numerals in the figures: 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 post; 10, ejector pin; 11, support column; 12, runner 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 OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The singular forms of "group", "class" and "the" used in the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0020] 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, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining". Embodiment

[0021] Please refer to Figures 1 - 4 A die-casting machine mold structure includes a fixed template 1. The bottom surface of the fixed template 1 is provided with grooves according to product specifications. The bottom surface of the fixed template 1 abuts against a movable template 2. The top surface of the movable template 2 is provided with grooves 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 installed on a fixed mold assembly, and the movable template 2 is installed on a movable mold assembly.

[0022] In the present invention, the fixed mold assembly includes a top plate 3. A plurality of counterbore holes are provided around the top surface of the top plate 3. Connecting bolts are provided in the counterbore holes. The connecting bolts are screwed into corresponding threaded holes on the top surface of the fixed template 1. Waterway holes are provided around the outer side surface of the fixed template 1. A runner assembly is provided in the middle of the top surface of the top plate 3.

[0023] In the present invention, the movable mold assembly includes a bottom plate 4. A plurality of counterbore holes are provided around the bottom surface of the bottom plate 4. Long-shank bolts are provided in the counterbore holes. The long-shank bolts penetrate through a square iron 5. The bottom surface of the square iron 5 abuts against the top surface of the bottom plate 4. 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 corresponding threaded holes on the bottom surface of the movable template 2. Waterway holes are provided around the outer side surface of the movable template 2. An ejection structure is provided between the top surface of the bottom plate 4 and the bottom surface of the movable template 2.

[0024] In the present invention, the ejection structure includes an upper ejector plate 7. The bottom surface of the upper ejector plate 7 is fixedly connected by bolts to a lower ejector plate 8. Four guide post mounting holes are provided around the bottom surface of the upper ejector plate 7. Ejector plate guide posts 9 are provided in the guide post mounting holes. The top ends of the ejector plate guide posts 9 are fitted in guide post holes provided on the bottom surface of the movable template 2. A plurality of ejector pin mounting holes are evenly provided in the middle of the bottom surface of the upper ejector plate 7. Ejector pins 10 are provided in the ejector pin mounting holes. The top ends of the ejector pins 10 are fitted in ejector pin holes provided on the bottom surface of the movable template 2. A plurality of support columns 11 are fixedly installed on the middle of the top surface of the upper ejector plate 7 by connecting bolts. The top surfaces of the support columns 11 abut against the movable template 2.

[0025] In the present invention, the runner assembly includes a runner plate 12, which is fixedly installed in the middle of the top surface of the top plate 3. In the middle of the top surface of the runner plate 12, a valve body 13 is fixedly installed. On one side of the top surface of the valve body 13, a motor 14 is installed. The lower end of the motor 14 penetrates the top surface of the valve body 13 and is connected to a worm 15. On one side of the worm 15, a worm gear 16 is engaged and connected. The worm gear 16 is fixedly installed on a valve rod 17. The valve rod 17 is horizontally rotatably connected in the valve body 13. In the middle of the outer side surface of the valve rod 17, a valve plate 18 is provided. The outer side surface of the valve plate 18 abuts against the inside of a valve pipe 19. The valve pipe 19 is inlaid in the valve body 13. The valve pipe 19 is installed and connected to a connecting pipe 20 through a flange ring. Embodiment

[0026] On the basis of Embodiment 1, the present invention also provides a control method adopting the above die-casting machine mold structure, which includes the following steps: Step 1, before die-casting production, according to the specification information of the die-casting product, set the initial control parameters of the injection molding machine; 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; Step 2, during die-casting, collect the state information in the closed cavity; the state information includes the pressure P, temperature T in the cavity, and the flow rate Q of the molding slurry; Step 3, analyze and judge according to the state information and the preset parameter range: S31, when the pressure P exceeds the preset pressure upper limit or the temperature T exceeds the preset temperature upper limit, generate an injection molding parameter adjustment signal or a mold cooling signal; S32, at the same time, according to the flow rate Q of the molding slurry and the time t, calculate the injected slurry volume , and the calculation formula is ; when the injected slurry volume is greater than the preset slurry threshold, generate a starting signal for the motor 14; Step 4, after the slurry injection is completed, introduce cooling water into the water holes of the fixed template 1 and the movable template 2, and the flow rate of the cooling water is adjusted according to the mold temperature and the product cooling speed requirements.

[0027] In the present invention, based on Step 3, when generating the starting signal for the motor 14, the injection molding parameter adjustment signal or the mold cooling signal, a PID algorithm is adopted for dynamic adjustment. Specifically: Obtain the pressure P, temperature T in the cavity, and the injected slurry volume ; at any moment in the cavity, the pressure P, temperature T, and the injected slurry volume The difference is calculated with the corresponding preset target value to obtain the target deviation value cet, where c = 1, 2, 3 and respectively represents the numbers corresponding to pressure, temperature, and the volume of the injected slurry; the corresponding control quantity cn is calculated by using the PID control algorithm based on the target deviation value, and the formula of the PID control algorithm is: , is the proportionality coefficient, is the integral coefficient, is the differential coefficient; According to the control quantity corresponding to pressure, temperature or the volume of the injected slurry, adjust the injection pressure of the injection molding machine, the mold temperature or the rotation speed of the motor 14: When c = 1, 1n represents the control quantity corresponding to pressure, and the injection pressure of the injection molding machine is adjusted by the control quantity 1n; When c = 2, 2n represents the control quantity corresponding to temperature, and the mold temperature of the injection molding machine is adjusted by the control quantity 2n; When c = 3, 3n represents the control quantity corresponding to the volume of the injected slurry, and the rotation speed of the motor 14 is adjusted by the control quantity 3n.

[0028] In the present invention, the flow rate of the cooling water is adjusted according to the mold temperature and the requirements of the product cooling rate, and the specific steps are as follows: Take the moment when the cooling water is introduced into the water holes of the fixed mold plate 1 and the movable mold plate 2 as the water injection moment, record the time region between the current moment and the water injection moment as the cooling monitoring time zone, and record the time length of the identified cooling monitoring time zone as the cooling monitoring duration TF1; 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; Obtain the preset demolding temperature, and subtract the preset demolding temperature from the current mold temperature to obtain the demolding temperature difference value TF3; Perform weighted calculation on the cooling monitoring duration, the temperature change trend value and the demolding temperature difference value to obtain the demolding influence value TF, and the weighted calculation formula is: , where f1, f2, and f3 respectively represent the weight influence factors corresponding to the cooling monitoring duration, the temperature change trend value and the demolding temperature difference value; If the demolding influence value is greater than its demolding threshold, generate a demolding signal; the demolding signal is used to trigger the control of separating the fixed mold plate 1 and the movable mold plate 2 of the die-casting machine, and at the same time start the ejection structure. The upper ejector plate 7 of the ejection structure moves upward along the ejector plate guide post 9 under the action of the power device, and the product is ejected from the mold through the ejector pin 10 to complete the demolding process.

[0029] In the present invention, based on step three, there is also step five. When generating the motor 14 start signal, the injection parameter adjustment signal or the mold cooling signal, control the corresponding equipment to perform the corresponding operations, specifically: When the motor 14 start signal is received, the motor 14 is triggered to start. The output shaft of the motor 14 drives the worm 15 to rotate, driving the worm gear 16 to rotate the valve stem 17, and further causing the valve plate 18 to closely abut against the valve pipe 19, closing the flow channel and stopping the slurry injection; When the injection molding parameter adjustment signaling is received, the injection pressure of the injection molding machine is triggered to be adjusted; When the mold cooling signaling is received, the cooling system paired with the mold is triggered to start.

[0030] The working principle of a die-casting machine mold structure and control method provided by the present invention is as follows: Before die-casting production, the initial parameters of the injection molding machine and the motor 14 equipment are set according to the product specifications, laying a foundation for the die-casting process; After die-casting starts, the injection molding machine injects the molten slurry into the valve pipe 19 through the connecting pipe 20, and enters 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, corresponding control signaling is generated, such as injection molding parameter adjustment signaling or mold cooling signaling, and the injection pressure and mold temperature of the injection molding machine are adjusted through the PID algorithm to ensure the stability of the die-casting process and product quality; at the same time, the volume of the injected slurry is calculated according to the flow rate Q and time t, and when the preset slurry threshold is reached, the motor 14 starts, driving the valve stem 17 to rotate through the worm 15 and the worm gear 16, and the valve plate 18 closes the flow channel to accurately control the slurry intake; After the slurry injection is completed, cooling water is introduced into the water holes of the mold, and the cooling water flow rate is adjusted in real time according to the mold temperature; the demolding influence value is obtained by weighted calculation of the cooling monitoring duration, temperature change trend value, and demolding temperature difference value. When the demolding influence value is greater than the demolding threshold, a demolding signaling is generated; at this time, the die-casting machine separates the fixed template 1 and the movable template 2, and the ejection structure starts. The upper ejector plate 7 rises along the ejector plate guide post 9 under the action of the power device, and the ejector pin 10 ejects the product from the mold, completing the entire die-casting process; through this closed-loop control method, accurate control of the slurry intake, temperature, and pressure parameters during the die-casting process, as well as efficient cooling and demolding operations, are achieved, improving product quality and production efficiency.

[0031] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common general knowledge or conventional technical means in the technical field not disclosed in this disclosure. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0032] It should be understood that the present invention is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A die-casting machine mold structure, characterized in that, It includes a fixed template (1), characterized in that grooves are provided on the bottom surface of the fixed template (1) according to the product specifications. The bottom surface of the fixed template (1) abuts against a movable template (2). Grooves are provided on the top surface of the movable template (2) according to the product specifications. The grooves of the fixed template (1) and the movable template (2) together form a closed cavity. The fixed template (1) is installed on a fixed mold assembly, and the movable template (2) is installed on a movable mold assembly; The fixed mold assembly includes 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. The connecting bolts are screwed into corresponding threaded holes on the top surface of the fixed template (1). Waterway holes are provided around the outer side surface of the fixed template (1). A runner assembly is provided in the middle of the top surface of the top plate (3); The runner assembly includes a runner plate (12). The runner plate (12) is installed and fixed in the middle of the top surface of the top plate (3). A valve body (13) is installed and fixed in the middle of the top surface of the runner 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) penetrates through the top surface of the valve body (13) and is connected to a worm (15). A worm gear (16) is engaged and connected to one side of the worm (15). The worm gear (16) is installed and fixed on a valve stem (17). The valve stem (17) is horizontally rotatably connected in 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 inlaid in the valve body (13). The valve pipe (19) is installed and connected to a connecting pipe (20) through a flange ring.

2. The die-casting machine die structure according to claim 1, wherein, The movable mold assembly includes a bottom plate (4). A plurality of countersunk holes are provided around the bottom surface of the bottom plate (4). Long-shank bolts are provided in the countersunk holes. The long-shank bolts penetrate through a square iron (5). The bottom surface of the square iron (5) abuts against the top surface of the bottom plate (4). The top surface of the square iron (5) abuts against the bottom surface of the movable template (2). The top end of the long-shank bolt is screwed into a corresponding threaded hole on the bottom surface of the movable template (2). Waterway holes are provided around the outer side surface of the movable template (2). A ejection structure is provided between the top surface of the bottom plate (4) and the bottom surface of the movable template (2).

3. A die-casting machine mold structure according to claim 2, characterized in that, The ejection structure includes an upper ejector plate (7). The bottom surface of the upper ejector plate (7) is connected and fixed to a lower ejector plate (8) through bolts. Four guide post mounting holes are provided around the bottom surface of the upper ejector plate (7). Ejector plate guide posts (9) are provided in the guide post mounting holes. The top ends of the ejector plate guide posts (9) are fitted into guide post holes provided on the bottom surface of the movable template (2). A plurality of ejector pin mounting holes are evenly provided in the middle of the bottom surface of the upper ejector plate (7). Ejector pins (10) are provided in the ejector pin mounting holes. The top ends of the ejector pins (10) are fitted into ejector pin holes provided on the bottom surface of the movable template (2). A plurality of support columns (11) are installed and fixed in the middle of the top surface of the upper ejector plate (7) through connecting bolts. The top surfaces of the support columns (11) abut against the movable template (2).

4. A control method for implementing the die-casting machine die structure described in claim 3, characterized in that, It 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 the status information in the closed cavity; the status information includes the pressure, temperature, and the 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 the preset upper pressure limit or the temperature exceeds the preset upper temperature limit, generate an injection molding parameter adjustment signal or a mold cooling signal. S32: Meanwhile, calculate the volume of the injected slurry according to the flow rate and time of the molding slurry; when the injected slurry volume is greater than the preset slurry threshold, generate a start signal for the motor (14). Step 4: After the slurry injection is completed, introduce cooling water into the water channels of the fixed template (1) and the moving template (2), and the flow rate of the cooling water is adjusted according to the mold temperature and the product cooling rate requirements.

5. A control method for a die-casting machine die structure according to claim 4, characterized in that, Based on Step 3, when generating the start signal for the motor (14), the injection molding parameter adjustment signal, or the mold cooling signal, perform dynamic adjustment using the PID algorithm. Specifically: Obtain the pressure, temperature, and the injected slurry volume in the cavity; calculate the target deviation value by calculating the difference between the pressure, temperature, and the injected slurry volume at any moment in the cavity and their corresponding preset target values; calculate the corresponding control quantity using the PID control algorithm through the target deviation value. Adjust the injection pressure of the injection molding machine, the mold temperature, or the rotation speed of the motor (14) according to the control quantity corresponding to the pressure, temperature, or the injected slurry volume.

6. The control method of a die-casting machine die structure according to claim 5, characterized in that, The flow rate of the cooling water is adjusted according to the mold temperature and the product cooling rate requirements. The specific steps are as follows: Take the moment when cooling water is introduced into the water channels of the fixed template (1) and the moving template (2) as the water injection moment, record the time interval between the current moment and the water injection moment as the cooling monitoring time zone, and record the time length of the cooling monitoring time zone as the cooling monitoring duration. Obtain the mold temperature at any moment in the cooling monitoring time zone, and calculate the temperature change trend value by using the standard deviation formula for the mold temperature in the cooling monitoring time zone. Obtain the preset demolding temperature, and calculate the demolding temperature difference value by subtracting the preset demolding temperature from the current mold temperature. Perform weighted calculation on the cooling monitoring duration, the temperature change trend value, and the demolding temperature difference value to obtain the demolding influence value; if the demolding influence value is greater than its demolding threshold, generate a demolding signal; the demolding signal is used to trigger, separate the fixed template (1) and the moving template (2) of the die-casting machine, and at the same time start the ejection structure. The upper ejector plate (7) of the ejection structure moves upward along the ejector plate guide post (9) under the action of the power device, and ejects the product from the mold through the ejector pin (10) to complete the demolding process.

7. A control method for a die-casting machine die structure according to claim 4, characterized in that Based on Step 3, it also includes Step 5: When generating the start signal for the motor (14), the injection molding parameter adjustment signal, or the mold cooling signal, control the corresponding equipment to perform the corresponding operations. Specifically: When generating the start signal for the motor (14), trigger to start the motor (14). The output shaft of the motor (14) drives the worm (15) to rotate, drives the worm gear (16) to make the valve rod (17) rotate, and further makes the valve plate (18) closely abut against the valve pipe (19) to close the flow channel and stop the slurry injection. When generating the injection molding parameter adjustment signal, trigger to adjust the injection pressure of the injection molding machine. When generating a mold cooling signal, trigger the startup of the cooling system for mold pairing.

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