Machining equipment applied to die casting of high-voltage distribution box

Abstract

The invention discloses processing equipment applied to high-voltage distribution box die casting, which belongs to the technical field of high-voltage distribution box processing and comprises a worktable, a first mounting plate, a second mounting plate, a fixed die mechanism and a movable die mechanism. According to the movable mold mechanism, the movable mold, the multiple transverse plates, the box body, the second hydraulic cylinder and the liquid circulation assembly are arranged, the liquid circulation assembly pumps out cooling liquid in the box body, the cooling liquid penetrates through the movable mold and then flows back into the box body again, the temperature of the movable mold is rapidly reduced through circulation of the cooling liquid, and then a workpiece is rapidly cooled and fixed; and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of high-voltage distribution box processing, and in particular relates to processing equipment used for die-casting of high-voltage distribution boxes. Background Art

[0002] With the rapid development of the new energy vehicle industry, the performance and quality of the high-voltage distribution box, as one of the core components of the new energy vehicle power system, is directly related to the safety, reliability and endurance of the vehicle. The high-voltage distribution box undertakes the key tasks of power distribution, conversion and transmission, and integrates a large number of high-voltage electrical components and connection lines, so it has extremely high requirements for its manufacturing accuracy, sealing and heat dissipation performance.

[0003] In the manufacturing process of high-voltage distribution boxes for new energy vehicles, die-casting technology is widely used because it can efficiently and accurately form complex structural parts. Die-casting technology injects molten metal into the mold cavity under high pressure and cools and solidifies under pressure to produce parts of the required shape and size.

[0004] However, the existing processing equipment used for high-voltage distribution box die-casting still has some shortcomings when in use. In terms of mold cooling efficiency, traditional equipment usually adopts natural cooling or simple air cooling, which makes the mold temperature drop slowly, affecting the processing efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide processing equipment for high-voltage distribution box die-casting, which is used to solve the technical problem that traditional equipment in the prior art usually adopts natural cooling or simple air cooling, which makes the mold temperature drop slowly, affecting the processing efficiency.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The processing equipment used for die-casting of high-voltage distribution boxes includes: a workbench; a first mounting plate, installed on one side of the workbench; a second mounting plate, installed on one side of the workbench; a fixed mold mechanism, installed on the top surface of the workbench; a movable mold mechanism, used to cooperate with the fixed mold mechanism to die-cast the high-voltage distribution box, which includes: a movable mold, which has a storage groove inside; a plurality of cross plates, all installed in the storage groove of the movable mold; a box body, used to contain coolant, slidably connected to the workbench, and fixedly connected to the movable mold; a second hydraulic cylinder, installed on the second mounting plate, and its extended end is connected to the box body; a liquid circulation component, used to extract the coolant in the box body, and make the coolant flow back into the box body after passing through the movable mold.

[0008] Preferably, the fixed mold mechanism includes: a fixing mold, installed on the top surface of the workbench and matching with the moving mold; a grouting pipe, installed on the fixing mold and connected to the cavity of the fixing mold; a feed hopper, installed on the grouting pipe; an injection punch, slidably connected to the grouting pipe; a multi-stage hydraulic cylinder, installed on the first mounting plate, and its extending end is fixedly connected to the injection punch.

[0009] Preferably, the liquid circulation component includes: a material pump, installed on the top surface of the box body, which includes a liquid suction pipe and a liquid outlet pipe, and the liquid suction pipe extends into the box body; a first transverse pipe, located above the movable mold and fixedly connected to the liquid outlet pipe; a second transverse pipe; a return pipe, one end of which is connected to the second transverse pipe, and the other end of which is connected to the box body; a plurality of shunt pipes, which are installed through the movable mold, the upper end of which is connected to the first transverse pipe, and the lower end of which is connected to the second transverse pipe.

[0010] Preferably, the liquid circulation component also includes a plurality of striking components, which include: a shaft rod, which passes through one side of the shunt pipe and is rotatably connected to the shunt pipe; an impeller, which is located in the shunt pipe and is installed on the shaft rod; a plurality of springs, which are all located outside the shunt pipe and are all installed on the shaft rod; and a plurality of striking balls, which are respectively fixedly connected to the plurality of springs and are used to strike the cross plate.

[0011] Preferably, the movable mold mechanism further comprises: a plurality of support plates, all installed in the box body; and two slide blocks, both installed on the bottom surface of the box body.

[0012] Preferably, the processing equipment used for die-casting of high-voltage distribution boxes also includes: two slide grooves, both of which are opened on the top surface of the workbench, and the two sliding blocks are slidably connected to the two slide grooves respectively.

[0013] Preferably, the processing equipment used for die-casting of high-voltage distribution boxes also includes a control system, which includes: a data acquisition and entry module, which is used to collect comprehensive data information of the processing equipment, wherein the comprehensive data information includes the temperature of the coolant, the thermal conductivity of the coolant, the density of the coolant, the temperature and pressure drop of the dynamic mold; a data analysis module, which receives the threshold range of the cooling difficulty influence coefficient preset by the user, generates the cooling difficulty influence coefficient according to the comprehensive data information, and then compares the cooling difficulty influence coefficient with the threshold range of the preset cooling difficulty influence coefficient to determine and generate a corresponding flow rate requirement level; a control module, which controls and adjusts the power of the material pump according to the corresponding flow rate requirement level; a data acquisition module, which is used to collect a historical training data set of the processing equipment, and the historical training data set includes cooling comprehensive influence data and cooling time; wherein the cooling comprehensive influence data includes comprehensive data information and the flow rate data of the coolant in the first cross pipe; a time prediction module, which trains a machine learning model to predict the cooling time based on the historical training data set, collects real-time cooling comprehensive influence data, and inputs it into the trained machine learning model to predict the cooling time.

[0014] Preferably, the cooling difficulty influence coefficient is generated as follows:

[0015]

[0016] Where Nd is the cooling difficulty coefficient, Jw is the temperature of the coolant, Dr is the thermal conductivity of the coolant, Md is the density of the coolant, Mw is the temperature of the moving mold, Yj is the pressure drop, and are all weight coefficients, which are determined by technicians in this field according to specific application requirements. and Both are greater than 0.

[0017] Preferably, the flow rate requirement level is generated as follows: the flow rate requirement level includes the first-level coolant flow rate, the second-level coolant flow rate and the third-level coolant flow rate, and the threshold range of the preset cooling difficulty influence coefficient is Nd 1 、Nd 2 , Nd 1 <Nd 2 ; If Nd≤Nd 1 At this time, the data analysis module generates the first-level coolant flow rate; if Nd 2 ≥Nd>Nd 1 At this time, the data analysis module generates the secondary coolant flow rate; if Nd>Nd 2 ,At this time, the data analysis module generates three levels of coolant flow rate.

[0018] Preferably, the training method of the machine learning model for predicting the cooling time includes: converting the collected cooling comprehensive impact data into a corresponding set of feature vectors; using each set of feature vectors as the input of the machine learning model, the machine learning model uses the cooling time corresponding to each set of cooling comprehensive impact data as the output, and uses the cooling time actually corresponding to each set of cooling comprehensive impact data as the prediction target, and uses minimizing the loss function value of the machine learning model as the training target; stopping training when the loss function value of the machine learning model is less than or equal to the preset target loss value.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] 1. The movable mold mechanism of the present invention is provided with a movable mold, a plurality of transverse plates, a box body, a second hydraulic cylinder and a liquid circulation component. The liquid circulation component extracts the coolant in the box body and allows the coolant to flow back into the box body after passing through the movable mold. Through the circulation of the coolant, the temperature of the movable mold is quickly reduced, and the workpiece is quickly cooled and fixed, thereby improving the production efficiency.

[0021] 2. The striking component of the present invention is provided with a shaft, an impeller, a spring and a striking ball. When the coolant passes through the shunt pipe, it will drive the impeller in the striking component to rotate, and then the striking ball will strike the cross plate, causing the movable mold to vibrate, which is convenient for separating the movable mold from the workpiece and simplifies the demoulding process. Moreover, since the striking component is driven by the flowing coolant, there is no need to set up an additional driving source, thereby reducing the use cost.

[0022] 3. The processing equipment used for high-voltage distribution box die-casting in the present invention is equipped with a control system. The control system collects comprehensive data information through a data acquisition and entry module. The data analysis module generates a cooling difficulty influence coefficient based on the comprehensive data information, and determines and generates a corresponding flow rate requirement level. The control module controls and adjusts the power of the material pump according to the flow rate requirement level, thereby controlling the flow rate of the coolant. By precisely controlling the flow rate of the coolant, energy waste caused by excessively high or low coolant flow rate in traditional cooling methods is avoided, and energy saving and consumption reduction are achieved while ensuring the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The three-dimensional processing equipment used for high-voltage distribution box die casting in the present invention Figure 1;

[0025] Figure 2 The three-dimensional processing equipment used for high-voltage distribution box die casting in the present invention Figure 2 ;

[0026] Figure 3 It is a structural schematic diagram of the fixed mold mechanism in the present invention;

[0027] Figure 4 It is a schematic diagram of the assembly structure of the box body and the movable mold in the present invention;

[0028] Figure 5 It is a schematic diagram of the internal structure of the box body and the movable mold in the present invention;

[0029] Figure 6 is a three-dimensional diagram of a liquid circulation component in the present invention;

[0030] Figure 7 For the present invention Figure 6 A magnified schematic diagram of part A;

[0031] Figure 8 It is a module diagram of the control system in the present invention;

[0032] 1. The axial flow path of the hydraulic cylinder is as follows: 1. The axial flow path of the hydraulic cylinder is as follows: 2. The axial flow path of the hydraulic cylinder is as follows: 3. The axial flow path of the hydraulic cylinder is as follows: 4. The axial flow path of the hydraulic cylinder is as follows: 5. The axial flow path of the hydraulic cylinder is as follows: 6. The axial flow path of the hydraulic cylinder is as follows: 7. The axial flow path of the hydraulic cylinder is as follows: 8. The axial flow path of the hydraulic cylinder is as follows: 9. The axial flow path of the hydraulic cylinder is as follows: 100. The workbench is as follows: 101. The slideway is as follows: 102. The first mounting plate is as follows: 103. The second mounting plate is as follows: 200. The fixed mold mechanism is as follows: 201. The fixed mold is as follows: 202. The grouting pipe is as follows: 203. The feed hopper is as follows: 204. The injection punch is as follows: 205. The multi-stage hydraulic cylinder is as follows: 300. The movable mold mechanism is as follows: 301. The movable mold is as follows: 302. The transverse plate is as follows: 303. The box body is as follows: 304. The support plate is as follows: 305. The slider is as follows: 306. The second hydraulic cylinder is as follows: 310. The liquid circulation component is as follows: 311. The material pump is as follows: 312. The liquid extraction pipe is as follows: 313. The liquid outlet pipe is as follows: 314. The first transverse pipe is as follows: 315. The second transverse pipe is as follows: 316. The reflux pipe is as follows: 317. The diverter pipe is as follows: 318. The striking component is as follows: 3181. The shaft rod is as follows: 3 DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0034] Example 1: Figure 1 and Figure 2As shown, the processing equipment used for die-casting of high-voltage distribution boxes includes a workbench 100, a first mounting plate 102, a second mounting plate 103, a fixed mold mechanism 200 and a movable mold mechanism 300.

[0035] The first mounting plate 102 is mounted on one side of the workbench 100; the second mounting plate 103 is mounted on the side of the workbench 100 away from the first mounting plate 102; the fixed mold mechanism 200 is mounted on the top surface of the workbench 100; the movable mold mechanism 300 is used to cooperate with the fixed mold mechanism 200 to die-cast the high-voltage distribution box.

[0036] The movable mold mechanism 300 includes a movable mold 301, a plurality of transverse plates 302, a box 303, a second hydraulic cylinder 306 and a liquid circulation assembly 310. A storage groove is provided inside the movable mold 301; the plurality of transverse plates 302 are installed in the storage groove of the movable mold 301; the box 303 is used to contain the cooling liquid, the box 303 is slidably connected to the workbench 100, and the box 303 is fixedly connected to the movable mold 301; the second hydraulic cylinder 306 is installed on the second mounting plate 103, and the extension end of the second hydraulic cylinder 306 is connected to the box 303; the liquid circulation assembly 310 is used to extract the cooling liquid in the box 303, and make the cooling liquid flow back to the box 303 after passing through the movable mold 301.

[0037] Specifically, by starting the second hydraulic cylinder 306 , the second hydraulic cylinder 306 pushes the box body 303 to move toward the fixed mold mechanism 200 , thereby driving the movable mold 301 to move, and then the movable mold 301 is inserted into the fixed mold mechanism 200 .

[0038] Then, the liquid metal is introduced into the fixed mold mechanism 200 and the pressure is maintained for a period of time to ensure that the liquid metal is fully solidified between the fixed mold mechanism 200 and the movable mold 301 and to reduce defects such as shrinkage cavities and looseness.

[0039] After the preset time is reached, the liquid circulation component 310 is started to extract the coolant in the box 303, and the coolant passes through the movable mold 301 and then flows back into the box 303. The circulation of the coolant will reduce the temperature of the movable mold 301, thereby cooling and fixing the workpiece (high-voltage distribution box) between the fixed mold mechanism 200 and the movable mold 301.

[0040] like Figure 1-Figure 3 As shown, the fixed mold mechanism 200 includes a shaping mold 201 , a grouting pipe 202 , a feed hopper 203 , an injection punch 204 and a multi-stage hydraulic cylinder 205 .

[0041] The shaping mold 201 is installed on the top surface of the workbench 100, and the shaping mold 201 is matched with the dynamic mold 301; the grouting pipe 202 is installed on the shaping mold 201, and the grouting pipe 202 is connected with the cavity of the shaping mold 201; the feed hopper 203 is installed on the grouting pipe 202; the injection punch 204 is slidably connected with the grouting pipe 202; the multi-stage hydraulic cylinder 205 is installed on the first mounting plate 102, and the extending end of the multi-stage hydraulic cylinder 205 is fixedly connected with the injection punch 204.

[0042] Specifically, when the movable mold 301 is in the fixing mold 201, the liquid metal is added into the grouting pipe 202 through the feed hopper 203, and then the multi-stage hydraulic cylinder 205 is started to push the injection punch 204 to move into the grouting pipe 202, so that the injection punch 204 injects the liquid metal into the fixing mold 201 at a high speed.

[0043] like Figure 1 and Figure 4-Figure 6 As shown, the liquid circulation component 310 includes a material pump 311 , a first transverse pipe 314 , a second transverse pipe 315 , a return pipe 316 and a plurality of branch pipes 317 .

[0044] The material pump 311 is installed on the top surface of the box body 303. The material pump 311 includes a liquid suction pipe 312 and a liquid outlet pipe 313. The liquid suction pipe 312 extends into the box body 303; the first transverse pipe 314 is located above the dynamic mold 301, and the first transverse pipe 314 is fixedly connected to the liquid outlet pipe 313; one end of the return pipe 316 is connected to the second transverse pipe 315, and the other end of the return pipe 316 is connected to the box body 303; a plurality of shunt pipes 317 are installed through the dynamic mold 301, the upper end of the shunt pipe 317 is connected to the first transverse pipe 314, and the lower end of the shunt pipe 317 is connected to the second transverse pipe 315.

[0045] Specifically, when the movable mold 301 needs to be cooled, the material pump 311 is started to extract the coolant in the box 303 through the liquid extraction pipe 312, and the coolant is transported to the first transverse pipe 314 through the liquid outlet pipe 313. The coolant in the first transverse pipe 314 will enter into multiple branch pipes 317, and the coolant in the branch pipe 317 will enter into the second transverse pipe 315, and then the coolant will flow into the box 303 through the return pipe 316. Since the branch pipe 317 runs through the movable mold 301, the coolant in the branch pipe 317 will cool the movable mold 301 through the branch pipe 317, and then cool the workpiece between the movable mold 301 and the fixed mold 201, so that the workpiece is cooled and fixed.

[0046] like Figure 6 and Figure 7As shown, the liquid circulation component 310 further includes a plurality of striking components 318 , and the striking components 318 include a shaft 3181 , an impeller 3182 , a plurality of springs 3183 and a plurality of striking balls 3184 .

[0047] The shaft 3181 passes through one side of the shunt pipe 317 and is rotatably connected to the shunt pipe 317; the impeller 3182 is located in the shunt pipe 317, and the impeller 3182 is installed on the shaft 3181; multiple springs 3183 are located outside the shunt pipe 317, and multiple springs 3183 are installed on the shaft 3181; multiple striking balls 3184 are respectively fixedly connected to the multiple springs 3183, and the multiple striking balls 3184 are used to hit the horizontal plate 302.

[0048] Specifically, when the coolant passes through the shunt pipe 317, the coolant will drive the impeller 3182 to rotate, and then drive the shaft 3181 to rotate. The rotating shaft 3181 will drive the spring 3183 and the striking ball 3184 to rotate, and then the striking ball 3184 will hit the cross plate 302, causing the cross plate 302 to vibrate, and then the movable mold 301 will vibrate, thereby facilitating the separation of the movable mold 301 from the workpiece.

[0049] like Figure 1 , Figure 2 and Figure 4 As shown, the movable mold mechanism 300 further includes a plurality of support plates 304 and two sliders 305. The plurality of support plates 304 are all installed in the box body 303; and the two sliders 305 are both installed on the bottom surface of the box body 303.

[0050] The processing equipment used for high-voltage distribution box die-casting also includes two slide grooves 101 . The two slide grooves 101 are both opened on the top surface of the workbench 100 , and the two sliders 305 are slidably connected to the two slide grooves 101 respectively.

[0051] Specifically, by providing the support plate 304 , the anti-deformation capability of the box body 303 can be improved; by providing the slider 305 and the slide groove 101 , the box body 303 can slide on the workbench 100 .

[0052] Working principle: When in use, lubricant is applied on the inner wall of the fixed mold 201 and the movable mold 301, and then the second hydraulic cylinder 306 is started to push the box 303 toward the fixed mold 201, thereby driving the movable mold 301 to move, and then the movable mold 301 is inserted into the fixed mold 201.

[0053] The liquid metal is added into the slurry squeezing pipe 202 through the feed hopper 203, and then the multi-stage hydraulic cylinder 205 is started to push the injection punch 204 to move, thereby injecting the liquid metal into the shaping mold 201 at a high speed.

[0054] Then, the pressure is maintained for a period of time to ensure that the liquid metal is fully solidified between the fixed mold mechanism 200 and the movable mold 301 and to reduce defects such as shrinkage cavities and looseness.

[0055] After reaching the preset holding time, the material pump 311 is started to extract the coolant in the box 303 through the liquid extraction pipe 312, and the coolant is transported to the first transverse pipe 314 through the liquid outlet pipe 313. The coolant in the first transverse pipe 314 will enter into multiple branch pipes 317, and the coolant in the branch pipe 317 will enter into the second transverse pipe 315, and then the coolant will flow into the box 303 through the return pipe 316. Since the branch pipe 317 runs through the movable mold 301, the coolant in the branch pipe 317 will cool the movable mold 301 through the branch pipe 317, and then cool the workpiece between the movable mold 301 and the fixed mold 201, so that the workpiece (high-voltage distribution box) is cooled and fixed.

[0056] When the coolant passes through the shunt pipe 317, the coolant will drive the impeller 3182 to rotate, and then drive the shaft 3181 to rotate. The rotating shaft 3181 will drive the spring 3183 and the striking ball 3184 to rotate, and then the striking ball 3184 will hit the horizontal plate 302, causing the horizontal plate 302 to vibrate, and then the movable mold 301 will vibrate.

[0057] After the cooling is completed, the second hydraulic cylinder 306 is activated, so that the extended end of the second hydraulic cylinder 306 drives the box 303 and the movable mold 301 to move away from the fixed mold 201, so that the movable mold 301 is separated from the fixed mold 201. And because the impeller 3182, the shaft 3181 and the spring 3183 rotate when the workpiece is cooled and fixed, the striking ball 3184 hits the horizontal plate 302 and causes the horizontal plate 302 to vibrate, thereby causing the movable mold 301 to vibrate, so that the workpiece is no longer tightly connected to the movable mold 301, so that the workpiece is easily removed from the movable mold 301.

[0058] Example 2: Figure 1-Figure 6 and Figure 8 As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that:

[0059] The processing equipment used for high-voltage distribution box die-casting also includes a control system, which includes: data collection and entry module, data analysis module, control module, data acquisition module and time prediction module. The modules are connected by wired / wireless means to realize data transmission.

[0060] The data acquisition and input module is used to collect comprehensive data information of the processing equipment, which is a processing equipment used for high-voltage distribution box die casting, wherein the comprehensive data information includes the temperature of the coolant, the thermal conductivity of the coolant, the density of the coolant, the temperature and the pressure drop of the movable mold 301;

[0061] Specifically, the temperature of the coolant refers to the temperature of the coolant when it enters the shunt pipe from the first transverse pipe 314 , and the temperature of the coolant is measured by a temperature sensor.

[0062] The thermal conductivity of the coolant is data information pre-entered by the user, and the thermal conductivity of the coolant can be measured by a hot plate method, a transient hot wire method, or a laser flash method.

[0063] The density of the coolant is the density of the coolant in the box 303, and the coolant density is measured by a specific gravity meter (densitometer).

[0064] The temperature of the movable mold 301 can be measured by an embedded temperature sensor.

[0065] The pressure drop refers to the difference between the pressure of the coolant when it enters the shunt pipe 317 through the first transverse pipe 314 and the pressure of the coolant in the shunt pipe 317 when it enters the second transverse pipe 315; the pressure of the coolant when it enters the shunt pipe 317 through the first transverse pipe 314 is measured by the pressure sensor, and the pressure of the coolant in the shunt pipe 317 when it enters the second transverse pipe 315 is measured by the pressure sensor.

[0066] The data analysis module receives the threshold range of the cooling difficulty influence coefficient preset by the user, generates the cooling difficulty influence coefficient according to the comprehensive data information, and then compares the cooling difficulty influence coefficient with the threshold range of the preset cooling difficulty influence coefficient to determine and generate the corresponding flow rate demand level;

[0067] The cooling difficulty influence coefficient is generated as follows:

[0068]

[0069] Wherein, Nd is the coefficient of influence of cooling difficulty, Jw is the temperature of the coolant, Dr is the thermal conductivity of the coolant, Md is the density of the coolant, Mw is the temperature of the movable mold 301, Yj is the pressure drop, and are all weight coefficients, which are determined by technicians in this field according to specific application requirements. and All are greater than 0;

[0070] Among them, the higher the temperature of the coolant, the smaller the temperature difference between the coolant and the movable mold 301, the lower the heat transfer efficiency, and the more difficult it is to cool down; conversely, the lower the temperature of the coolant, the greater the temperature difference between the coolant and the movable mold 301, the better the cooling effect, and the easier it is to cool down.

[0071] The greater the thermal conductivity of the coolant, the stronger the heat transfer capacity of the coolant, and the more efficiently the heat can be removed from the movable mold 301, and the difficulty of cooling is lower; conversely, when the thermal conductivity of the coolant is lower, the heat transfer efficiency is poor and the difficulty of cooling will increase.

[0072] The greater the density of the coolant, the more mass of coolant it can carry per unit time at the same flow rate, the greater its heat absorption capacity, and the lower the difficulty of cooling; conversely, when the density of the coolant is lower, the coolant can take away less heat per unit time, and the difficulty of cooling will increase.

[0073] When the pressure drop is large, it means that the flow resistance of the coolant in the shunt pipe 317 is large, and the flow rate is difficult to increase, resulting in reduced cooling efficiency and increased difficulty in cooling. Conversely, when the pressure drop is small, it means that the coolant is easier to flow quickly in the shunt pipe 317, which helps to improve the cooling efficiency and reduce the difficulty of cooling.

[0074] It should be noted that the formulas involved in the above-mentioned are all calculated by removing dimensions and taking numerical values. They are a formula that is closest to the actual situation obtained by collecting a large amount of data and performing software simulation. The weight coefficients in the formulas and the various preset thresholds in the analysis process are set by technical personnel in this field according to actual conditions or obtained by simulating a large amount of data; the size of the weight coefficient is to quantify each parameter to obtain a specific value for subsequent comparison. The size of the weight coefficient depends on the amount of sample data and the corresponding processing coefficients initially set by technical personnel in this field for each group of sample data; as long as it does not affect the proportional relationship between the parameters and the quantized values.

[0075] The flow rate requirement levels are generated as follows:

[0076] The flow rate requirement levels include a primary coolant flow rate, a secondary coolant flow rate and a tertiary coolant flow rate, wherein the primary coolant flow rate, the secondary coolant flow rate and the tertiary coolant flow rate increase in sequence, and the primary coolant flow rate, the secondary coolant flow rate and the tertiary coolant flow rate are all flow rates of the coolant in the first transverse pipe 314; when the flow rate of the coolant in the first transverse pipe 314 changes, the flow rate of the coolant in the diverter pipe 317 will also change accordingly.

[0077] The threshold range of the preset cooling difficulty influence coefficient is Nd 1 、Nd 2 , Nd 1 <Nd2 ;

[0078] If Nd≤Nd 1 , indicating that the temperature reduction difficulty of the movable mold 301 is relatively low. At this time, the data analysis module generates a primary coolant flow rate;

[0079] If Nd 2 ≥Nd>Nd 1 , indicating that the temperature reduction difficulty of the movable mold 301 is average. At this time, the data analysis module generates a secondary coolant flow rate;

[0080] If Nd>Nd 2 , indicating that it is difficult to cool down the movable mold 301. At this time, the data analysis module generates three levels of coolant flow rate.

[0081] Among them, Nd 1 and Nd 2 It is determined by those skilled in the art according to specific application requirements.

[0082] Exemplarily, the flow rates of the coolant in the first transverse pipe 314 corresponding to the primary coolant flow rate, the secondary coolant flow rate and the tertiary coolant flow rate are 0.5 m / s, 1 m / s and 1.5 m / s respectively; the flow rate of the coolant in the first transverse pipe 314 can also be customized according to specific circumstances.

[0083] The control module controls and adjusts the power of the material pump 311 according to the corresponding flow rate requirement level, thereby controlling and adjusting the flow rate of the coolant in the first transverse pipe 314, and finally adjusting the flow rate of the coolant in the diverter pipe 317;

[0084] The method of controlling and adjusting the power of the material pump 311 includes the following steps:

[0085] Step 1: determining a target flow velocity Vm of the coolant in the first transverse pipe 314 according to the flow velocity requirement level;

[0086] Step 2: monitor the actual flow velocity Vs of the coolant in the first transverse pipe 314 in real time, and calculate the difference: e(t)=Vm-Vs;

[0087] Step 3: Input the error e(t) into the PID controller and output the adjusted power P of the material pump 311:

[0088]

[0089] Among them, K p is the proportional gain, K i is the proportional gain, K d K is the proportional gain, which can be set by empirical adjustment method, classical adjustment method or automatic adjustment method. p , K iand K d ;

[0090] Step 4: Send the calculated pump power instruction to the frequency converter of the material pump 311 to adjust the operating power of the material pump 311 , thereby adjusting the flow rate of the coolant in the first transverse pipe 314 .

[0091] A data acquisition module is used to collect a historical training data set of the processing equipment, wherein the historical training data set includes cooling comprehensive impact data and cooling duration; wherein the cooling comprehensive impact data includes comprehensive data information and flow rate data of the coolant in the first transverse pipe 314, and the flow rate data of the coolant in the first transverse pipe 314 can be obtained by measuring with an ultrasonic flowmeter or an electromagnetic flowmeter;

[0092] The cooling time refers to the time required from the liquid circulation component 310 actively cooling the movable mold 301 to the completion of cooling the movable mold 301 , and the cooling time can be obtained by a timer.

[0093] The time prediction module trains a machine learning model to predict the cooling time based on the historical training data set, collects real-time cooling comprehensive impact data, and inputs it into the trained machine learning model to predict the cooling time;

[0094] The training method of the machine learning model for predicting the cooling time includes:

[0095] Convert the collected cooling comprehensive impact data into a corresponding set of feature vectors;

[0096] Each group of feature vectors is used as the input of the machine learning model. The machine learning model takes the cooling time corresponding to each group of cooling comprehensive impact data as the output, takes the cooling time actually corresponding to each group of cooling comprehensive impact data as the prediction target, and takes minimizing the loss function value of the machine learning model as the training target; training stops when the loss function value of the machine learning model is less than or equal to the preset target loss value.

[0097] The machine learning model may be one of the models such as SVM regression, random forest regression or neural network regression.

[0098] The machine learning model loss function value is the mean square error;

[0099] Mean square error is one of the commonly used loss functions. Minimization is used as the goal to train the model so that the machine learning model better fits the data, thereby improving the performance and accuracy of the model;

[0100] In the loss function, MSE is the loss function value of the machine learning model, x is the feature vector group number; m is the number of feature vector groups; y is the number of feature vector groups; xis the cooling time predicted by the x-th group of feature vectors, is the actual cooling time corresponding to the xth group of feature vectors;

[0101] Other model parameters of the machine learning model, target loss value, optimization algorithm, training set test set validation set ratio, and loss function optimization are all achieved through actual engineering implementation and continuous experimental tuning.

[0102] The running time of the material pump 311 is controlled according to the predicted cooling time; when the running time of the material pump 311 is the same as the predicted cooling time, the material pump 311 is controlled to be powered off and stop running.

[0103] In summary, the control system collects the temperature, thermal conductivity, density and other parameters of the coolant, as well as the temperature and pressure drop of the movable mold 301 in real time through the data acquisition and entry module. The data analysis module generates the cooling difficulty influence coefficient according to the comprehensive data information, and determines and generates the corresponding flow rate requirement level. The control module controls and adjusts the power of the material pump 311 according to the flow rate requirement level, thereby controlling the flow rate of the coolant. By precisely controlling the flow rate of the coolant, the energy waste caused by the excessively high or low flow rate of the coolant in the traditional cooling method is avoided, and energy saving and consumption reduction are achieved while ensuring the cooling effect.

[0104] The time prediction module in the control system is based on a historical training data set to train a machine learning model that predicts the cooling time. By inputting real-time cooling comprehensive impact data, the cooling time can be predicted, thereby accurately controlling the operating time of the material pump 311. Compared with relying on manual experience and judgment, it reduces manual errors and improves the stability and reliability of the cooling effect.

[0105] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0106] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Processing equipment used for high-voltage distribution box die casting, characterized in that: include: Workbench(100); A first mounting plate (102) mounted on one side of the workbench (100); A second mounting plate (103) mounted on one side of the workbench (100); A fixed mold mechanism (200) is installed on the top surface of the workbench (100); The movable die mechanism (300) is used for cooperating with the fixed die mechanism (200) to die-cast the high-voltage distribution box, and comprises: The movable mold (301) has a storage groove formed therein; A plurality of transverse plates (302) are installed in the storage groove of the movable mold (301); A box (303) is used to contain cooling liquid, is slidably connected to the workbench (100), and is fixedly connected to the movable mold (301); A second hydraulic cylinder (306) is mounted on the second mounting plate (103), and an extended end thereof is connected to the box (303); The liquid circulation component (310) is used to extract the cooling liquid in the box (303) and allow the cooling liquid to flow back into the box (303) after passing through the movable mold (301).

2. The processing equipment for high-voltage distribution box die casting according to claim 1 is characterized in that: The fixed mold mechanism (200) comprises: A fixed mold (201) is installed on the top surface of the workbench (100) and matches the movable mold (301); A grouting pipe (202) is installed on the shaping mold (201) and is connected to the cavity of the shaping mold (201); A feed hopper (203) installed on the grouting pipe (202); An injection punch (204) is slidably connected to the grouting pipe (202); A multi-stage hydraulic cylinder (205) is mounted on the first mounting plate (102), and an extended end thereof is fixedly connected to the injection punch (204).

3. The processing equipment for high-voltage distribution box die casting according to claim 1 is characterized in that: The liquid circulation component (310) comprises: A material pump (311) is installed on the top surface of the box (303), and comprises a liquid suction pipe (312) and a liquid outlet pipe (313), wherein the liquid suction pipe (312) extends into the box (303); A first transverse pipe (314), located above the movable mold (301), and fixedly connected to the liquid outlet pipe (313); A second transverse tube (315); A return pipe (316), one end of which is connected to the second transverse pipe (315), and the other end of which is connected to the box body (303); A plurality of flow dividers (317) are installed through the movable mold (301), with the upper ends thereof connected to the first transverse tube (314) and the lower ends thereof connected to the second transverse tube (315).

4. The processing equipment for high-voltage distribution box die casting according to claim 3 is characterized in that: The liquid circulation component (310) further includes a plurality of striking components (318), wherein the striking components (318) include: A shaft (3181) passes through one side of the shunt pipe (317) and is rotatably connected to the shunt pipe (317); An impeller (3182) is located in the shunt pipe (317) and is mounted on the shaft (3181); A plurality of springs (3183), all located outside the shunt tube (317) and all mounted on the shaft (3181); A plurality of striking balls (3184) are respectively fixedly connected to the plurality of springs (3183) and are used to strike the horizontal plate (302).

5. The processing equipment for high-voltage distribution box die casting according to claim 1 is characterized in that: The movable mold mechanism (300) further comprises: A plurality of support plates (304) are installed in the box (303); The two sliding blocks (305) are both installed on the bottom surface of the box body (303).

6. The processing equipment for high-voltage distribution box die casting according to claim 5 is characterized in that: Also includes: The two slide grooves (101) are both arranged on the top surface of the workbench (100), and the two sliding blocks (305) are respectively slidably connected to the two slide grooves (101).

7. The processing equipment for high-voltage distribution box die casting according to claim 3 is characterized in that: It also includes a control system, which includes: A data collection and input module, used for collecting comprehensive data information of the processing equipment, wherein the comprehensive data information includes the temperature of the coolant, the thermal conductivity of the coolant, the density of the coolant, the temperature and pressure drop of the movable mold (301); The data analysis module receives the threshold range of the cooling difficulty influence coefficient preset by the user, generates the cooling difficulty influence coefficient according to the comprehensive data information, and then compares the cooling difficulty influence coefficient with the threshold range of the preset cooling difficulty influence coefficient to determine and generate the corresponding flow rate demand level; A control module controls and adjusts the power of the material pump (311) according to the corresponding flow rate demand level; A data acquisition module is used to collect a historical training data set of the processing equipment, the historical training data set including cooling comprehensive impact data and cooling time; wherein the cooling comprehensive impact data includes comprehensive data information and flow rate data of the coolant in the first transverse pipe (314); The time prediction module trains a machine learning model to predict the cooling time based on the historical training data set, collects real-time cooling comprehensive impact data, and inputs it into the trained machine learning model to predict the cooling time.

8. The processing equipment for high voltage distribution box die casting according to claim 7 is characterized in that: The generation method of the cooling difficulty influence coefficient is as follows: Wherein, Nd is the coefficient of influence of cooling difficulty, Jw is the temperature of the coolant, Dr is the thermal conductivity of the coolant, Md is the density of the coolant, Mw is the temperature of the movable mold (301), Yj is the pressure drop, and are all weight coefficients, which are determined by technicians in this field according to specific application requirements. and Both are greater than 0.

9. The processing equipment for high-voltage distribution box die casting according to claim 8 is characterized in that: The flow rate requirement level is generated as follows: The flow rate requirement levels include primary coolant flow rate, secondary coolant flow rate and tertiary coolant flow rate. The threshold range of the preset cooling difficulty influence coefficient is Nd1, Nd2, Nd1 <Nd2; If Nd≤Nd1, at this time, the data analysis module generates a primary coolant flow rate; If Nd2≥Nd>Nd1, at this time, the data analysis module generates the secondary coolant flow rate; If Nd>Nd2, at this time, the data analysis module generates three levels of coolant flow rate.

10. The processing equipment for high voltage distribution box die casting according to claim 9 is characterized in that: The training method of the machine learning model for predicting the cooling time includes: Convert the collected cooling comprehensive impact data into a corresponding set of feature vectors; Each group of feature vectors is used as the input of the machine learning model. The machine learning model takes the cooling time corresponding to each group of cooling comprehensive impact data as the output, takes the cooling time actually corresponding to each group of cooling comprehensive impact data as the prediction target, and takes minimizing the loss function value of the machine learning model as the training target; training stops when the loss function value of the machine learning model is less than or equal to the preset target loss value.

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