Die-casting engine cylinder block production line

Abstract

The invention relates to the technical field of metal casting, in particular to a die-casting engine cylinder block production line which comprises an operation conveying rail, and the arrangement path of the operation conveying 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 connected through the operation conveying rail. The image analysis module analyzes data according to the current mold flow, then the hot spot center during cylinder die casting is preliminarily calibrated, and then the dead head calibration module presets the operation point position when the demolding pressure relief module conducts demolding stress release along the dead head position deviating from the hot spot center. The demolding pressure relief module releases residual stress of a local warping forming surface in advance before demolding, and the demolding compensation module cooperates with the demolding pressure relief module to compensate the demolding rate of a riser area when the demolding pressure relief module releases the residual stress.

Description

Technical Field

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

[0002] When the existing engine cylinder block is cast by pressure casting, it is necessary to consider the shrinkage holes or shrinkage defects caused by the shrinkage of metal cooling. Therefore, it is necessary to design a model riser. By replenishing the molten metal to the area of ​​the casting solidification shrinkage during the die-casting process of the production line, the volume shrinkage of the casting during the solidification process is effectively compensated through dynamic pressure transmission and continuous supply of liquid metal. However, the existing die-casting engine cylinder block production line has the following problems: because the cylinder block structure of the die-casting engine is usually complex, the wall thickness is uneven, and there are many hot nodes, it is more difficult to compensate for shrinkage. Due to this influence, during casting, there is still a phenomenon that the position of some risers deviates from the center of the hot node, resulting in uneven cooling of the risers, that is, the temperature difference between the riser and the casting is too large, and the influence of inconsistent solidification shrinkage will cause warping due to the release of residual stress after demolding. The traditional technical means use a centralized compensation method, which is not conducive to processing the local points of the riser that is specifically offset from the center of the hot node, and cannot stably eliminate the residual stress formed after the cylinder block is die-cast. 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 the technical problem is: a die-casting engine cylinder block production line, including an operation transmission rail, wherein the operation transmission rail arrangement path is sequentially provided with a PLC control section, a demoulding operation section, a spraying operation section and a heat preservation operation section, and the PLC control section, the demoulding operation section, the spraying operation section and the heat preservation operation section are all connected through the operation transmission rail; The demolding operation section includes a cavity recognition module, an image analysis module, a riser calibration module, a demolding pressure release module and a demolding compensation module. The riser calibration module is arranged at the side edge of the transmission line of the operation transmission rail. The cavity recognition module and the image analysis module are both installed on 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 casting mold and upload it to the image analysis module. The image analysis module preliminarily calibrates the hot spot center during cylinder die-casting according to the current mold flow analysis data. Then, the riser calibration module is used to pre-set the operation point of the demolding pressure release module during demolding stress release along the riser position deviating from the hot spot center, and the demolding pressure release module is used to pre-release the residual stress of the local warping forming surface before demolding. The demolding compensation module is arranged on the upper end surface of the demolding pressure release module. The demolding compensation module is used to cooperate with the demolding pressure release module to compensate for the demolding rate of the riser area when the demolding pressure release module releases the residual stress.

[0005] Preferably, the cavity recognition module and the image analysis module are installed on one side of the riser calibration module, 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 with the image analysis module, and the demolding compensation module is installed between the demolding pressure relief module and the riser calibration module.

[0006] Preferably, the demolding and pressure releasing module includes a transmission mechanism, a deviation surface compensation source generating 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 drop data of the remaining risers, and to adjust the output power of the deviation surface compensation source generating mechanism in real time according to the temperature rise or drop data of the remaining risers. The transmission mechanism is used to fix the circumferentially adjustable compensation port to the outer periphery of the riser deviating from the center of the hot node, and finally perform local heating source or cooling source dual compensation on one side of the riser away from the center of the hot node through the circumferentially adjustable compensation port.

[0007] Preferably, the demoulding compensation module includes a signal acquisition unit for reading the compensation position of the circumferentially adjustable compensation port after debugging, a demoulding nozzle for local spray surface compensation, a control module for setting the compensation operation position interval, and a spray source preprocessing 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 spray source preprocessing module is fixedly connected to the input end of the demoulding nozzle.

[0008] Preferably, the cavity identification module includes a probe transmission clamp arm, an image acquisition probe and an acquisition data transmission module, the probe transmission clamp arm is used to debug the acquisition position of the image acquisition probe on the cavity image of the cylinder casting mold, and upload the image parameters obtained by the image acquisition probe to the image analysis module through the acquisition data transmission module, the probe transmission clamp arm is connected to the PLC control segment signal, the image acquisition probe is fixedly connected to the probe transmission clamp arm, and the image acquisition probe is connected to the acquisition data transmission module signal.

[0009] Preferably, the spray source pretreatment module is composed of a temperature control box, a supply pump and a pressure regulating valve. The pressure regulating valve is installed on the inner side of 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 regulating valve.

[0010] Preferably, the positions of the operation transfer rail in the demoulding operation section, the spraying operation section and the heat preservation operation section are all provided with a mechanical arm assembly for loading and unloading the cylinder body.

[0011] Preferably, a material transfer box is provided at one end of the operation transfer rail close to the heat preservation operation section, and the material transfer box is used to load the forming cylinder bodies in batches and transport them to the next process.

[0012] Compared with the prior art, the present invention has the following beneficial effects: by setting a cavity recognition module to collect the cavity image of the cylinder casting mold and upload it to the image analysis module, the image analysis module is used to preliminarily calibrate the hot spot center during cylinder die-casting based on the current mold flow analysis data, and then the riser calibration module is used to pre-set the operating point of the demolding pressure relief module for demolding stress release along the riser position deviating from the hot spot center, the demolding pressure relief module is used to pre-release the residual stress of the local warping forming surface before demolding, and the demolding compensation module is used to compensate for the demolding rate of the riser area when the demolding pressure relief module releases the residual stress, so that the riser that deviates from the hot spot center during cylinder die-casting can be preferentially processed by the demolding pressure relief module and the demolding compensation module before demolding, thereby reducing the warping caused by the residual stress release when the riser is demolded due to inconsistent solidification shrinkage, thereby ensuring the molding quality of the cylinder after demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 The present invention is a composition diagram of a die-casting engine cylinder production line.

[0015] In the figure: 1. Operation transmission rail; 2. PLC control section; 3. Demolding operation section; 31. Cavity recognition module; 32. Image analysis module; 33. Riser calibration module; 34. Demolding pressure release module; 35. Demolding compensation module; 4. Spraying operation section; 5. Insulation operation section; 51. Unloading transfer box. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0017] like Figure 1As shown, a die-casting engine cylinder block production line described in the present invention includes an operation transmission rail 1. The arrangement path of the operation transmission rail 1 is sequentially provided with a PLC control section 2, a demoulding operation section 3, a spraying operation section 4 and a heat preservation operation section 5. The PLC control section 2, the demoulding operation section 3, the spraying operation section 4 and the heat preservation operation section 5 are all connected through the operation transmission rail 1. The demoulding operation section 3 includes a cavity recognition module 31, an image analysis module 32, a riser calibration module 33, a demoulding pressure release module 34 and a demoulding compensation module 35. The riser calibration module 33 is arranged at the side edge of the transmission line of the operation transmission 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 robot arm. The cavity recognition module 31 is used to collect the cavity image of the cylinder casting mold and upload it to the image analysis module 32. The image analysis module 32 is based on the current mold. The mold flow analysis data preliminarily calibrates the hot spot center during cylinder die-casting, and then the riser calibration module 33 pre-sets the operating point of the demolding pressure relief module 34 for releasing the demolding stress along the riser position deviating from the hot spot center, and the demolding pressure relief module 34 pre-releases the residual stress of the local warping 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 for the demolding rate of the riser area when the demolding pressure relief module 34 releases the residual stress.

[0018] In this embodiment, in order to solve the problem that there are many hot nodes and shrinkage compensation is difficult, and some risers still deviate from the center of the hot node during casting, resulting in uneven cooling of the risers, the present invention proposes a die-casting engine cylinder production line, in which a demolding operation section 3 is set in the production line to pre-treat the risers deviating from the center of the hot node before the cylinder is demolded, so that the risers deviating from the center of the hot node during the die-casting of the cylinder can be preferentially processed by the demolding pressure relief module 34 and the demolding compensation module 35 before demolding, thereby reducing the warping caused by the release of residual stress due to inconsistent solidification shrinkage during demolding of the risers, thereby ensuring the molding quality of the cylinder after demolding.

[0019] In an optional implementation of the present embodiment, 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 with 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.

[0020] In this embodiment, the cavity recognition module 31 includes a probe transmission clamp arm, an image acquisition probe and an acquisition data transmission module. The probe transmission clamp arm is used to debug the acquisition position of the image acquisition probe for the cavity image of the cylinder casting mold, 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 transmission clamp arm is signal-connected to the PLC control section 2, the image acquisition probe is fixedly connected to the probe transmission clamp arm, and the image acquisition probe is signal-connected to the acquisition data transmission module.

[0021] In this embodiment, after the image acquisition probe is fixed by the probe transmission fixture in the cavity recognition module 31, the displacement drive control of the image acquisition probe is realized through the PLC control section 2, so that the image acquisition probe is transmitted through the probe transmission fixture before the cylinder die-casting mold is closed, so that the image acquisition probe reaches the cylinder cavity position, thereby realizing direct acquisition of the cylinder mold cavity image. After the acquisition is completed, the acquisition data transmission module uploads the currently acquired cylinder mold cavity image to the image analysis module 32.

[0022] In this embodiment, since the mold cavity must first be subjected to mold flow analysis before the mold is operated, and the mold hot spot center and the position of the riser are obtained in advance, before the image analysis module 32 obtains the current mold cavity image, the mold model must be imported through the PC to analyze and determine 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 cavity image obtained by the image analysis module 32 according to the mold flow analysis result. The operation principle of the riser calibration module 33 is: based on the mold cavity image constructed by the mold flow analysis, the current cavity image obtained by the current image analysis module 32 is then aligned with the mold cavity image, so that the two images are matched and aligned to the same coordinate system, and then the image analysis module 32 calibrates the current cavity image and its corresponding hot spot center and riser position coordinates according to the hot spot center and riser position coordinates obtained from the mold cavity image, and independently calibrates the riser position coordinates that deviate from the hot spot center, wherein a riser that deviates from the hot spot center by ≥5mm is calibrated as a deviated riser.

[0023] In this embodiment, the demolding and pressure relief module 34 includes a transmission mechanism, a deviation surface compensation source generating mechanism, a circumferentially adjustable compensation port 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 drop data of the remaining risers, and to adjust the output power of the deviation surface compensation source generating mechanism in real time according to the temperature rise or drop data of the remaining risers. The transmission mechanism is used to fix the circumferentially adjustable compensation port to the outer periphery of the riser deviating from the center of the hot node, and finally perform local heating source or cooling source dual compensation on one side of the riser away from the center of the hot node through the circumferentially adjustable compensation port. Among them, the deviation surface compensation source generating mechanism in the demolding and pressure relief module 34 can select a heat pump machine.

[0024] In the present embodiment, the number of demolding pressure relief modules 34 is set to be several, and the corresponding number of demolding pressure relief modules 34 is enabled according to the number of deviation ports calibrated by the image analysis module 32, that is, the PLC control section 2 reads the calibrated position of the deviation riser and sends a corresponding drive signal to the transmission mechanism, so that the transmission mechanism drives the circumferentially adjustable compensation port to move toward the deviation riser position, and all the risers deviating from the center of the thermal node are covered by the circumferentially adjustable compensation port, and then the compensation end of the circumferentially adjustable compensation port is driven to move circumferentially, so that the compensation end is located at the half-circle position of the riser away from the center of the thermal node and is fixed. After fixation, after the die-casting is completed, the deviation surface compensation source generation mechanism outputs the compensation medium to the circumferentially adjustable compensation port, and the riser is stress-assisted pressure relief is performed through the circumferentially adjustable compensation port.

[0025] In this embodiment, the circumferentially adjustable compensation port in the demolding and pressure release module 34 includes a prototype sleeve, an electromagnetic output valve and a circumferentially rotating motor, wherein a through groove matching the shape of the riser is opened along the center position of the prototype sleeve, 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 circumferentially rotating motor, the input end of the electromagnetic output valve is connected to the output end of the deviation surface compensation source generating mechanism through a hose, and the temperature calibration module is fixedly connected to the inner wall of the prototype sleeve. After the prototype sleeve is engaged with the outside of the riser through the transmission mechanism, the electromagnetic output valve is driven by the circumferentially rotating motor to rotate along the inner circumference of the prototype sleeve, so that the valve port of the electromagnetic output valve is located at a half-circumference position away from the center of the hot node of the riser and is fixed. Then, the temperature calibration module is used to obtain whether the cooling temperature of the riser area deviating from the center of the hot node is consistent with the cooling temperature of the riser located at the center of the hot node. If the cooling speed of the riser deviating from the center of the hot node is higher than that of the riser located at the center of the hot node, a start control signal is sent to the deviation surface compensation source generation mechanism through the temperature calibration module, and the riser fixed at the riser away from the center of the hot node is turned off. The electromagnetic output valve at the outer diameter half-circle position of the hot node center outputs the heating source prepared by the deviated surface compensation source generating mechanism along the half-circle position of the riser, so that the riser is delayed in cooling in the half-circle away from the hot node center. If the cooling speed of the riser deviating from the hot node center is lower than that of the riser in the hot node center, the electromagnetic output valve fixed at the half-circle position of the riser away from the hot node center outputs the cooling source prepared by the deviated surface compensation source generating mechanism along the half-circle position of the riser, so that the riser is accelerated in cooling in the half-circle away from the hot node center, thereby maintaining cooling uniformity in the riser area and reducing the possibility of warping caused by excessive release of residual stress after demolding.

[0026] In this embodiment, the demoulding compensation module 35 includes a signal acquisition unit for reading the compensation position of the circumferentially adjustable compensation port after debugging, a demoulding nozzle for local spray surface compensation (a low-voltage electric control nozzle), a control module for setting the compensation operation position interval (a three-axis mechanical arm), and a spray source preprocessing module. The signal acquisition unit is connected to the circumferentially adjustable compensation port signal, the control module is connected to the signal acquisition unit signal, and the spray source preprocessing module is fixedly connected to the input end of the demoulding nozzle. Among them, the clamping end of the control module is fixedly connected to the outer shell of the demoulding nozzle.

[0027] In this embodiment, the demoulding compensation module 35 and the demoulding pressure relief module 34 are matched in number, the signal acquisition unit obtains the response signal of the current circumferentially adjustable compensation port, and collects the real-time detection parameters of the riser by the temperature calibration module. When each riser begins to cool, the lubricating medium used for demoulding is preferentially subjected to temperature treatment by the spray source pretreatment module. After the temperature treatment, and before the demoulding of the cylinder die-casting mold, the half-circle position of the circumferentially adjustable compensation port along the riser deviating from the center of the hot node is obtained by the signal acquisition unit, and the half-circle position of the riser deviating from the center of the hot node after debugging is set as the compensation interval, and the compensation interval is set as the compensation interval. The interval is sent to the control module, and the control module controls the demoulding nozzle to reciprocate along the outer diameter half-circle position of the riser away from the center of the hot node. During the movement, the lubricating liquid after temperature treatment is output to the demoulding nozzle through the spray source pretreatment module, so that the lubricating liquid is synchronously output to the half-circle position of the riser away from the center of the hot node through the circumferentially adjustable compensation port, and the spraying amount is increased preferentially to the half-circle area of ​​the riser deviating from the center of the hot node, so that its lubrication is improved compared with the riser at the center of the hot node, so as to avoid the increase of demoulding friction of the riser deviating from the pyrolysis center due to the release of a small amount of residual stress in the riser, thereby achieving the purpose of improving the demoulding forming degree.

[0028] In this embodiment, the spray source pretreatment module is composed of a temperature control box, a supply pump and a pressure regulating valve. The pressure regulating valve is installed on the inside of 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 regulating valve.

[0029] In this embodiment, the lubricant is subjected to temperature treatment by a temperature control box, that is, when the riser half-circle position away from the center of the hot node is not completely cooled, the lubricant temperature is set according to the riser temperature of the current hot node center (the lubricant temperature needs to be 3-5% lower than the riser temperature of the hot node center), and the internal lubricant is heated or cooled by the temperature control box, and finally output to the demolding nozzle by the supply pump, so that the treated lubricant flows to the riser half-circle position away from the center of the hot node, thereby achieving the purpose of auxiliary lubrication of the deviated position. At the same time, since the lubricant temperature is close to the interval temperature of the current cooling of the riser, it will not affect the uniformity of the riser cooling, thereby improving the stability and demolding uniformity of the riser.

[0030] In this embodiment, the positions of the operation transfer rail 1 in the demoulding operation section 3, the spraying operation section 4 and the heat preservation operation section 5 are all provided with a mechanical arm assembly for loading and unloading the cylinder body.

[0031] In this embodiment, a material transfer box 51 is provided at one end of the operation transfer rail 1 close to the heat preservation operation section 5, and the material transfer box 51 is used to load the forming cylinder bodies in batches and transport them to the next process.

[0032] In this embodiment, after the cylinder body is demolded from the die-casting mold set at the demolding operation section 3, it is transferred to the operation transfer rail 1 by the robot arm assembly, and the die-cast cylinder body is transferred to the spraying operation section 4 through the operation transfer rail 1. After the cylinder body surface is sprayed by the spraying operation section 4, the cylinder body is transferred to the operation transfer rail 1 again by the robot arm assembly, and is transported to the insulation operation section 5 through the operation transfer rail 1 for insulation. After the insulation setting time is reached, the die-cast cylinder bodies are uniformly transferred to the unloading transfer box 51 by the robot arm assembly, and transferred to the next operation process through the unloading transfer box 51.

[0033] The working principle of the present invention is as follows: the cavity recognition module 31 collects the cavity image of the cylinder casting mold and uploads it to the image analysis module 32, so that the image analysis module 32 preliminarily calibrates the hot spot center during cylinder die-casting based on the current mold flow analysis data, and then the riser calibration module 33 pre-sets the demolding pressure relief module 34 along the riser position deviating from the hot spot center to perform the working point when releasing the demolding stress, and the demolding pressure relief module 34 pre-releases the residual stress of the local warping forming surface before demolding, and the demolding compensation module 35 cooperates to compensate the demolding rate of the riser area when the demolding pressure relief module 34 releases the residual stress, so that the riser deviating from the hot spot center during cylinder die-casting can be preferentially processed by the demolding pressure relief module 34 and the demolding compensation module 35 before demolding, thereby reducing the warping caused by the release of residual stress when the riser is demolded due to inconsistent solidification shrinkage.

[0034] 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 to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A die-casting engine cylinder block production line, comprising an operating transfer rail (1), characterized in that: The arrangement path of the operation transmission rail (1) is provided with a PLC control section (2), a demoulding operation section (3), a spraying operation section (4) and a heat preservation operation section (5) in sequence, and the PLC control section (2), the demoulding operation section (3), the spraying operation section (4) and the heat preservation operation section (5) are all connected via the operation transmission rail (1); The demoulding operation section (3) comprises a cavity recognition module (31), an image analysis module (32), a riser calibration module (33), a demoulding pressure release module (34) and a demoulding compensation module (35); the riser calibration module (33) is arranged at a side edge of the transmission line of the operation transmission 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) via a four-axis robot arm; the cavity recognition module (31) is used to collect a cavity image of the cylinder casting mold and upload it to the image analysis module (32); the image analysis module (32) ) preliminarily calibrates the hot spot center of the cylinder body during die casting according to the current mold flow analysis data, and then pre-sets the operation point of the demoulding pressure relief module (34) for releasing the demoulding stress along the riser position deviating from the hot spot center through the riser calibration module (33), and the demoulding pressure relief module (34) pre-releases the residual stress of the local warping forming surface before demoulding, and the demoulding compensation module (35) is arranged on the upper end surface of the demoulding pressure relief module (34), and the demoulding compensation module (35) is used to cooperate with the demoulding pressure relief module (34) to compensate for the demoulding rate of the riser area when the demoulding pressure relief module (34) releases the residual stress.

2. The die-casting engine cylinder 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), and the demoulding pressure relief module (34) and the demoulding 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 demoulding compensation module (35) is installed between the demoulding pressure relief module (34) and the riser calibration module (33).

3. The die-casting engine cylinder block production line according to claim 1, characterized in that: The demoulding and pressure releasing module (34) comprises a transmission mechanism, a deviation surface compensation source generating 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 drop data of the remaining risers and to adjust the output power of the deviation surface compensation source generating mechanism in real time according to the temperature rise or drop data of the remaining risers. The transmission mechanism is used to fix the circumferentially adjustable compensation port to the outer periphery of the riser deviating from the center of the hot node, and finally to perform local heating source or cooling source dual compensation on one side of the riser away from the center of the hot node through the circumferentially adjustable compensation port.

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

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

6. The die-casting engine cylinder block production line according to claim 4, characterized in that: 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 on the inner side of 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 regulating valve.

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

8. The die-casting engine cylinder block production line according to claim 1, characterized in that: A material transfer box (51) is provided at one end of the operation transfer rail (1) close to the heat preservation operation section (5), and the material transfer box (51) is used to load the molding cylinder bodies in batches and transport them to the next process.

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