A die-casting engine block production line

Abstract

The present invention relates to the technical field of metal casting, and specifically to a die-casting engine cylinder block production line, which includes an operation transfer rail. The arrangement path of the operation transfer rail is successively provided with a PLC control section, a demolding operation section, a spraying operation section, and a heat preservation operation section. The PLC control section, the demolding operation section, the spraying operation section, and the heat preservation operation section are all connected through the operation transfer rail. The image analysis module, based on the current mold flow analysis data, initially calibrates the hot spot center during the die-casting of the cylinder block, and then, through the riser calibration module, presets the operation points for the release of demolding stress by the demolding pressure release module along the riser position deviating from the hot spot center. The demolding pressure release module pre-releases the residual stress on the surface formed by local warping before demolding, and the demolding compensation module, when the demolding pressure release module releases the residual stress, cooperates with the demolding pressure release module to compensate for the demolding rate in the riser area.

Description

Technical Field

[0001] The present invention relates to the technical field of metal casting, and in particular to a die-casting engine cylinder block production line. Background Art

[0002] When the existing engine cylinder block is cast by die casting, it is necessary to consider shrinkage cavity or porosity defects caused by metal cooling and shrinkage. Therefore, it is necessary to design a model riser. During the die casting process of the production line, molten metal is supplemented to the area where the casting solidifies and shrinks. Through dynamic pressure transfer and continuous supply of liquid metal, it is ensured that the volume shrinkage during the solidification of the casting is effectively compensated. However, the existing die-casting engine cylinder block production line has the following problems: Usually, the cylinder block structure of the die-casting engine is complex, the wall thickness is uneven, and there are many thermal nodes, making feeding difficult. Subject to this influence, there is still a phenomenon that the position of some risers deviates from the center of the thermal node during casting, resulting in uneven cooling of the risers, that is, the temperature difference between the riser and the casting is too large, and the inconsistent solidification shrinkage will cause warping due to the release of residual stress after demolding. The traditional technical means of using centralized compensation is not conducive to dealing with the local points of the riser that specifically deviate from the center of the thermal node, and cannot stably eliminate the residual stress formed after die casting of the cylinder block. Summary of the Invention

[0003] In view of the problems in the prior art, the present invention provides a die-casting engine cylinder block production line.

[0004] The technical solution adopted by the present invention to solve its technical problems is: A die-casting engine cylinder block production line includes an operation transfer rail. The arrangement path of the operation transfer rail is sequentially provided with a PLC control section, a demolding operation section, a spraying operation section, and a heat preservation operation section. The PLC control section, the demolding operation section, the spraying operation section, and the heat preservation operation section are all connected through the operation transfer rail;

[0005] The demolding operation section includes a cavity recognition module, an image analysis module, a riser calibration module, a demolding pressure relief module, and a demolding compensation module. The riser calibration module is arranged at the side edge position of the transmission line of the operation transmission rail. The cavity recognition module and the image analysis module are both installed at one end of the riser calibration module through a four-axis robotic arm. The cavity recognition module is used to collect the cavity image of the cylinder block casting mold and upload it to the image analysis module. The image analysis module initially calibrates the hot spot center during the die casting of the cylinder block based on the current mold flow analysis data, and then preset the operation point for the demolding pressure relief module to release the demolding stress along the riser position deviating from the hot spot center through the riser calibration module. The demolding pressure relief module pre-releases the residual stress on the locally warped surface before demolding. The demolding compensation module is arranged on the upper end surface of the demolding pressure relief module, and the demolding compensation module is used to compensate the demolding rate in the riser area in coordination with the demolding pressure relief module when the demolding pressure relief module releases the residual stress.

[0006] Preferably, the cavity recognition module and the image analysis module are installed on one side of the riser calibration module, and the demolding pressure relief module and the demolding compensation module are installed on the other side of the riser calibration module. The cavity recognition module is signal-connected to the image analysis module, and the demolding compensation module is installed between the demolding pressure relief module and the riser calibration module.

[0007] Preferably, the demolding pressure relief module includes a transmission mechanism, a deviation surface compensation source generation mechanism, a circumferentially adjustable compensation port, and a temperature calibration module. The number of circumferentially adjustable compensation ports is several. The temperature calibration module is used to read the temperature data of the other risers dropping, and adjust the output power of the deviation surface compensation source generation mechanism in real time according to the temperature data of the other risers rising or dropping. The transmission mechanism is used to fix the circumferentially adjustable compensation port on the outer periphery of the riser deviating from the hot spot center, and finally perform double compensation of the heating source or cooling source on one side of the riser far from the hot spot center through the circumferentially adjustable compensation port.

[0008] Preferably, the demolding compensation module includes a signal acquisition unit for reading the compensation position where the circumferentially adjustable compensation port is located after debugging, a demolding nozzle for local spraying surface compensation, a control module for setting the compensation operation position interval, and a spraying source pretreatment module. The signal acquisition unit is signal-connected to the circumferentially adjustable compensation port, the control module is signal-connected to the signal acquisition unit, and the spraying source pretreatment module is fixedly connected to the input end of the demolding nozzle.

[0009] Preferably, the cavity recognition module includes a probe drive clamp arm, an image acquisition probe, and a data acquisition and transmission module. The probe drive clamp arm is used to adjust the acquisition position of the cavity image of the cylinder block casting mold by the image acquisition probe, and upload the image parameters obtained by the image acquisition probe to the image analysis module through the data acquisition and transmission module. The probe drive clamp arm is signal-connected to the PLC control section, the image acquisition probe is fixedly connected to the probe drive clamp arm, and the image acquisition probe is signal-connected to the data acquisition and transmission module.

[0010] Preferably, the spray source pretreatment module consists of a temperature control box, a supply pump, and a pressure regulating valve. The pressure regulating valve is installed inside the temperature control box. The output end of the supply pump is fixedly connected to the input end of the demoulding spray nozzle, and the suction end of the supply pump is connected to the pressure regulating valve.

[0011] Preferably, robotic arm assemblies for loading and unloading the cylinder block are provided at the positions of the operation transfer rail in the demoulding operation section, the spraying operation section, and the heat preservation operation section.

[0012] Preferably, a blanking transfer box is provided at one end of the operation transfer rail close to the heat preservation operation section. The blanking transfer box is used to batch load the formed cylinder blocks and transport them to the next process.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting a cavity recognition module to collect the cavity image of the cylinder block casting mold and upload it to the image analysis module, the image analysis module can preliminarily calibrate the hot spot center during the die casting of the cylinder block based on the current mold flow analysis data. Then, through the riser calibration module, the operation points for the demoulding pressure release module to release the demoulding stress are preset along the riser positions deviating from the hot spot center. The demoulding pressure release module pre-releases the residual stress on the surface formed by local warping before demoulding, and the demoulding compensation module compensates the demoulding rate in the riser area in coordination with the demoulding pressure release module when the demoulding pressure release module releases the residual stress, so that the risers in the part deviating from the hot spot center during the die casting of the cylinder block can be preferentially processed by the demoulding pressure release module and the demoulding compensation module before demoulding, reducing the warping caused by the release of residual stress due to inconsistent solidification shrinkage during the demoulding of the risers and ensuring the forming quality of the cylinder block after demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 It is a composition diagram of a die-casting engine cylinder block production line of the present invention.

[0016] In the figure: 1. Job transfer track; 2. PLC control section; 3. Demolding operation section; 31. Cavity recognition module; 32. Image analysis module; 33. Riser calibration module; 34. Demolding pressure relief module; 35. Demolding compensation module; 4. Spraying operation section; 5. Heat preservation operation section; 51. Intermediate blanking box. Specific implementation mode

[0017] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0018] As Figure 1 shown, a die-casting engine cylinder block production line according to the present invention includes a job transfer track 1. The arrangement path of the job transfer track 1 is sequentially provided with a PLC control section 2, a demolding operation section 3, a spraying operation section 4 and a heat preservation operation section 5. The PLC control section 2, the demolding operation section 3, the spraying operation section 4 and the heat preservation operation section 5 are all connected through the job transfer track 1. The demolding operation section 3 includes a cavity recognition module 31, an image analysis module 32, a riser calibration module 33, a demolding pressure relief module 34 and a demolding compensation module 35. The riser calibration module 33 is arranged at the side edge position of the transmission line of the job transfer track 1. Both the cavity recognition module 31 and the image analysis module 32 are installed at one end of the riser calibration module 33 through a four-axis robotic arm. The cavity recognition module 31 is used to collect the cavity image of the cylinder block casting mold and upload it to the image analysis module 32. The image analysis module 32 preliminarily calibrates the hot spot center during cylinder block die-casting according to the current mold flow analysis data of the mold. Then, through the riser calibration module 33, the operation point for the demolding pressure relief module 34 to release the demolding stress is preset along the riser position deviating from the hot spot center. And the demolding pressure relief module 34 pre-releases the residual stress on the surface formed by local warping before demolding. The demolding compensation module 35 is arranged on the upper end surface of the demolding pressure relief module 34. The demolding compensation module 35 is used to cooperate with the demolding pressure relief module 34 to compensate the demolding rate of the riser area when the demolding pressure relief module 34 releases the residual stress.

[0019] In this embodiment, in order to solve the problem that due to more hot spots and more difficult feeding, there is still a phenomenon that the positions of some risers deviate from the hot spot center during casting, resulting in uneven cooling of the risers, the present invention proposes a die-casting engine cylinder block production line. By setting a demolding operation section 3 in the production line, the risers deviating from the hot spot center are pre-treated before the cylinder block is demolded, so that the risers deviating from the hot spot center during cylinder block die-casting can be preferentially processed by the demolding pressure relief module 34 and the demolding compensation module 35 before demolding, reducing the warping caused by the release of residual stress due to inconsistent solidification shrinkage during riser demolding, and ensuring the forming quality of the cylinder block after demolding.

[0020] In an alternative embodiment of this embodiment, the cavity recognition module 31 and the image analysis module 32 are installed on one side of the riser calibration module 33, and the demolding pressure relief module 34 and the demolding compensation module 35 are installed on the other side of the riser calibration module 33. The cavity recognition module 31 is signal-connected to the image analysis module 32, and the demolding compensation module 35 is installed between the demolding pressure relief module 34 and the riser calibration module 33.

[0021] In this embodiment, the cavity recognition module 31 includes a probe drive clamp arm, an image acquisition probe, and a data acquisition and transmission module. The probe drive clamp arm is used to adjust the acquisition position of the image acquisition probe for the cavity image of the cylinder block casting mold, and upload the image parameters obtained by the image acquisition probe to the image analysis module 32 through the data acquisition and transmission module. The probe drive clamp arm is signal-connected to the PLC control section 2. The image acquisition probe is fixedly connected to the probe drive clamp arm, and the image acquisition probe is signal-connected to the data acquisition and transmission module.

[0022] In this embodiment, after the probe drive fixture in the cavity recognition module 31 fixes the image acquisition probe, the displacement drive control of the image acquisition probe is realized through the PLC control section 2. Before the cylinder block die-casting mold is closed, the image acquisition probe is conveyed by the probe drive fixture to reach the inner cavity position of the cylinder block, so as to directly acquire the inner cavity image of the cylinder block mold. After the acquisition is completed, the data acquisition and transmission module uploads the currently acquired inner cavity image of the cylinder block mold to the image analysis module 32.

[0023] In this embodiment, since the mold flow analysis needs to be carried out on the mold cavity before the mold operates, and the hot spot center and the position of the riser of the mold are obtained in advance. Therefore, before the image analysis module 32 acquires the current inner cavity image of the mold, it is necessary to import the mold model through the PC side for the analysis and determination of the hot spot center. After the mold flow analysis is completed, the riser calibration module 33 performs physical calibration of the hot spot center on the current inner cavity image acquired by the image analysis module 32 according to the mold flow analysis results. The working principle of the riser calibration module 33 is: according to the mold inner cavity image constructed by the mold flow analysis, then align the current inner cavity image acquired by the current image analysis module 32 with the mold inner cavity image, so that the two images are matched and aligned in the same coordinate system. Then, the image analysis module 32 calibrates the coordinates of the hot spot center and the position of the riser corresponding to the current inner cavity image according to the coordinates of the hot spot center and the position of the riser obtained from the mold inner cavity image, and independently calibrates the position coordinates of the riser deviating from the hot spot center. Among them, the riser deviating from the hot spot center by ≥5mm is calibrated as the deviating riser.

[0024] In this embodiment, the demolding pressure relief module 34 includes a transmission mechanism, an off-plane compensation source generation mechanism, circumferentially adjustable compensation ports, and a temperature calibration module (a temperature sensor). The number of circumferentially adjustable compensation ports is several. The temperature calibration module is used to read the temperature data of the remaining risers during descent, and in real time regulate the output power of the off-plane compensation source generation mechanism according to the temperature data of the remaining risers during ascent or descent. The transmission mechanism is used to fix the circumferentially adjustable compensation ports on the outer periphery of the riser that is off the center of the hot spot. Finally, through the circumferentially adjustable compensation ports, dual compensation of a local heating source or a cooling source is performed on the side of the riser that is away from the center of the hot spot. Among them, the off-plane compensation source generation mechanism in the demolding pressure relief module 34 can be a heat pump machine.

[0025] In this embodiment, the number of demolding pressure relief modules 34 is set to several. Specifically, the corresponding number of demolding pressure relief modules 34 is enabled according to the number of off-ports calibrated by the image analysis module 32. That is, the PLC control section 2 reads the calibrated positions of the off-risers and sends corresponding drive signals to the transmission mechanism, so that the transmission mechanism drives the circumferentially adjustable compensation ports to move towards the positions of the off-risers, covering all the risers that are off the center of the hot spot through the circumferentially adjustable compensation ports. Then, the compensation ends of the circumferentially adjustable compensation ports are driven to move circumferentially, so that the compensation ends are located at the half-circumference position of the riser that is away from the center of the hot spot and are fixed. After being fixed, after die casting is completed, the off-plane compensation source generation mechanism outputs a compensation medium to the circumferentially adjustable compensation ports, and stress-assisted pressure relief is performed on the risers through the circumferentially adjustable compensation ports.

[0026] In this embodiment, the circumferentially adjustable compensation port in the demolding pressure relief module 34 includes a prototype sleeve, an electromagnetic output valve, and a circumferential rotation motor. Among them, the prototype sleeve is provided with a through groove along the central position that conforms to the shape of the riser, and the inner diameter of the groove is ≥ 2 mm of the riser diameter. The prototype sleeve is fixedly connected to the transmission end of the transmission mechanism. The pipe head part of the electromagnetic output valve is fixedly connected to the output end of the circumferential rotation motor. The input end of the electromagnetic output valve is connected to the output end of the off-plane compensation source generation mechanism through a hose. The temperature calibration module is fixedly connected to the inner wall of the prototype sleeve. After the prototype sleeve is clamped to the outside of the riser through the transmission mechanism, the electromagnetic output valve is driven by the circumferential rotation motor to rotate along the inner circumference of the prototype sleeve, so that the valve port of the electromagnetic output valve is located at the half circumference position away from the hot spot center of the riser and is fixed. Then, the temperature calibration module is used to obtain whether the cooling temperature of the riser area away from the hot spot center is the same as the cooling temperature of the riser at the hot spot center. If the cooling rate of the riser away from the hot spot center is higher than that of the riser at the hot spot center, the temperature calibration module sends a start control signal to the off-plane compensation source generation mechanism, and the electromagnetic output valve fixed at the outer diameter half circumference position of the riser away from the hot spot center outputs the heating source prepared by the off-plane compensation source generation mechanism along the half circumference position of the riser, so that the half circumference of the riser away from the hot spot center is cooled slowly. If the cooling rate of the riser away from the hot spot center is lower than that of the riser at the hot spot center, the electromagnetic output valve fixed at the half circumference position of the riser away from the hot spot center outputs the cooling source prepared by the off-plane compensation source generation mechanism along the half circumference position of the riser, so that the half circumference of the riser away from the hot spot center is cooled quickly, maintaining the cooling uniformity of the riser area and reducing the possibility of warping caused by excessive release of residual stress after demolding.

[0027] In this embodiment, the demolding compensation module 35 includes a signal acquisition unit for reading the compensation position of the circumferentially adjustable compensation port after debugging, a demolding nozzle for local spraying surface compensation (a low-pressure electric control nozzle), a control module for setting the compensation operation position interval (a three-axis robotic arm), and a spraying source pretreatment module. The signal acquisition unit is signal-connected to the circumferentially adjustable compensation port, the control module is signal-connected to the signal acquisition unit, and the spraying source pretreatment module is fixedly connected to the input end of the demolding nozzle. Among them, the clamping end of the control module is fixedly connected to the outer shell of the demolding nozzle.

[0028] In this embodiment, the number of the demolding compensation module 35 and the demolding pressure relief module 34 is set in a matching manner. The signal acquisition unit acquires the response signal of the currently circumferentially adjustable compensation port and collects the real-time detection parameters of the riser by the temperature calibration module. When each riser starts to cool, the lubricating medium for demolding is preferentially temperature-treated by the spraying source pretreatment module until after the temperature treatment. Before demolding the cylinder die-casting mold, the circumferentially adjustable compensation port is used to acquire the semi-circular position of the riser deviating from the hot spot center along the circumferential direction by the signal acquisition unit. The semi-circular position of the debugged riser deviating from the hot spot center is set as the compensation interval, and this compensation interval is sent to the control module. The control module controls the demolding nozzle to reciprocate along the outer diameter semi-circular position of the riser away from the hot spot center. During the movement, the temperature-treated lubricating fluid is output to the demolding nozzle by the spraying source pretreatment module, so that the lubricating fluid is synchronously output to the semi-circular position of the riser away from the hot spot center through the circumferentially adjustable compensation port. The spraying amount is preferentially increased in the semi-circular area of the riser deviating from the hot spot center, so that its lubricity is higher than that of the riser at the hot spot center position, avoiding an increase in the demolding friction force of the riser deviating from the pyrolysis center due to the release of a small amount of residual stress in the riser, and thus achieving the purpose of improving the demolding formability.

[0029] In this embodiment, the spraying source pretreatment module consists of a temperature control box, a supply pump, and a pressure control valve. The pressure control valve is installed inside the temperature control box. The output end of the supply pump is fixedly connected to the input end of the demolding nozzle, and the pumping end of the supply pump is connected to the pressure control valve.

[0030] In this embodiment, the lubricating fluid is temperature-treated by the temperature control box, that is, when the semi-circular position of the riser away from the hot spot center is not completely cooled, the temperature of the lubricating fluid is set according to the current temperature of the riser at the hot spot center (the temperature of the lubricating fluid needs to be 3-5% lower than the temperature of the riser at the hot spot center). The lubricant inside it is heated or cooled by the temperature control box and finally output to the demolding nozzle by the supply pump, so that the processed lubricant flows to the semi-circular position of the riser deviating from the hot spot center. While achieving the purpose of auxiliary lubrication for the deviated position, since the temperature of the lubricant is close to the interval temperature when the riser is currently cooling, it will not affect the uniformity of the riser during cooling, thereby improving the stability and demolding uniformity of the riser during demolding.

[0031] In this embodiment, robotic arm assemblies for loading and unloading the cylinder body are provided at the positions of the operation transfer rail 1 in the demolding operation section 3, the spraying operation section 4, and the heat preservation operation section 5.

[0032] In this embodiment, a blanking transfer box 51 is provided at one end of the operation transfer rail 1 close to the heat preservation operation section 5. The blanking transfer box 51 is used to batch-load the formed cylinder bodies and convey them to the next process.

[0033] In this embodiment, after the cylinder block is demolded by the die-casting mold provided at the demolding operation section 3, it is transferred to the operation transfer rail 1 by the robotic arm assembly. The die-cast cylinder block is transferred towards the spraying operation section 4 through the operation transfer rail 1. After the surface of the cylinder block is sprayed in the spraying operation section 4, the cylinder block is transferred to the operation transfer rail 1 again by the robotic arm assembly and conveyed to the heat preservation operation section 5 for heat preservation. Until the set heat preservation time is reached, the die-cast cylinder block is uniformly transferred to the blanking transfer box 51 by the robotic arm assembly and transferred to the next operation process through the blanking transfer box 51.

[0034] The working principle of the present invention: The cavity recognition module 31 collects the cavity image of the cylinder block casting mold and uploads it to the image analysis module 32, enabling the image analysis module 32 to preliminarily calibrate the hot spot center during the die-casting of the cylinder block based on the current mold flow analysis data. Then, through the riser calibration module 33, the operation points for the demolding stress release of the demolding pressure release module 34 are preset along the riser position deviating from the hot spot center. The demolding pressure release module 34 pre-releases the residual stress on the surface formed by local warping before demolding, and the demolding compensation module 35 compensates the demolding rate of the riser area in coordination when the demolding pressure release module 34 releases the residual stress, so that the risers in the part of the cylinder block deviating from the hot spot center during die-casting can be preferentially processed by the demolding pressure release module 34 and the demolding compensation module 35 before demolding, reducing the warping caused by the release of residual stress due to inconsistent solidification shrinkage during riser demolding.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A die-casting engine cylinder block production line, including an operation transfer rail (1), characterized in that: The arrangement path of the operation transfer rail (1) is successively provided with a PLC control section (2), a demolding operation section (3), a spraying operation section (4), and a heat preservation operation section (5). The PLC control section (2), the demolding operation section (3), the spraying operation section (4), and the heat preservation operation section (5) are all connected through the operation transfer rail (1). The demolding operation section (3) includes a cavity recognition module (31), an image analysis module (32), a riser calibration module (33), a demolding pressure relief module (34), and a demolding compensation module (35). The riser calibration module (33) is arranged at the side edge position of the transmission line of the operation transfer rail (1). The cavity recognition module (31) and the image analysis module (32) are both installed at one end of the riser calibration module (33) through a four-axis robotic arm. The cavity recognition module (31) is used to collect the cavity image of the cylinder block casting mold and upload it to the image analysis module (32). The image analysis module (32) preliminarily calibrates the hot spot center during cylinder block die casting according to the current mold flow analysis data of the mold. Then, through the riser calibration module (33), the operation position for the demolding pressure relief module (34) to release the demolding stress is preset along the riser position deviating from the hot spot center. And the demolding pressure relief module (34) pre-releases the residual stress on the locally warped forming surface before demolding. The demolding compensation module (35) is arranged on the upper end surface of the demolding pressure relief module (34). The demolding compensation module (35) is used to cooperate with the demolding pressure relief module (34) to compensate the demolding rate in the riser area when the demolding pressure relief module (34) releases the residual stress.

2. A die-casting engine block production line according to claim 1, characterized in that: The cavity recognition module (31) and the image analysis module (32) are installed on one side of the riser calibration module (33). The demolding pressure relief module (34) and the demolding compensation module (35) are installed on the other side of the riser calibration module (33). The cavity recognition module (31) is signal-connected to the image analysis module (32). The demolding compensation module (35) is installed between the demolding pressure relief module (34) and the riser calibration module (33).

3. A die-casting engine block production line according to claim 1, characterized in that: The demolding pressure relief module (34) includes a transmission mechanism, a deviation surface compensation source generation mechanism, a circumferentially adjustable compensation port, and a temperature calibration module. The number of the circumferentially adjustable compensation ports is several. The temperature calibration module is used to read the temperature data of the other risers dropping, and adjust the output power of the deviation surface compensation source generation mechanism in real time according to the temperature data of the other risers rising or dropping. The transmission mechanism is used to fix the circumferentially adjustable compensation port on the outer periphery of the riser deviating from the hot spot center. Finally, through the circumferentially adjustable compensation port, dual compensation of a local heating source or a cooling source is carried out on one side of the riser far from the hot spot center.

4. A die-casting engine block production line according to claim 3, characterized in that: The demoulding compensation module (35) includes a signal acquisition unit for reading the compensated position of the circumferentially adjustable compensation port after debugging, a demoulding nozzle for local spraying surface compensation, a control module for setting the compensation operation position range, and a spraying source pretreatment module. The signal acquisition unit is signal-connected to the circumferentially adjustable compensation port, the control module is signal-connected to the signal acquisition unit, and the spraying source pretreatment module is fixedly connected to the input end of the demoulding nozzle.

5. A die-casting engine block production line according to claim 1, characterized in that: The cavity identification module (31) includes a probe drive clamp arm, an image acquisition probe, and an acquisition data transmission module. The probe drive clamp arm is used to debug the acquisition position of the cavity image of the cylinder block casting mold by the image acquisition probe, and upload the image parameters obtained by the image acquisition probe to the image analysis module (32) through the acquisition data transmission module. The probe drive clamp arm is signal-connected to the PLC control section (2), the image acquisition probe is fixedly connected to the probe drive clamp arm, and the image acquisition probe is signal-connected to the acquisition data transmission module.

6. The die-casting engine block production line according to claim 4, wherein: The spraying source pretreatment module consists of a temperature control box, a supply pump, and a pressure regulating valve. The pressure regulating valve is installed inside the temperature control box. The output end of the supply pump is fixedly connected to the input end of the demoulding nozzle, and the pumping end of the supply pump is connected to the pressure regulating valve.

7. A die-casting engine block production line according to claim 1, characterized in that: The operation transfer rail (1) is provided with a robotic arm assembly for loading and unloading the cylinder block at the positions of the demoulding operation section (3), the spraying operation section (4), and the heat preservation operation section (5).

8. A die-casting engine block production line according to claim 1, characterized in that: One end of the operation transfer rail (1) close to the heat preservation operation section (5) is provided with a blanking transfer box (51), and the blanking transfer box (51) is used for batch loading of the formed cylinder blocks and transporting them to the next process.

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