A casting device and a casting method for an engine flywheel

Abstract

The present application relates to engine flywheel casting processing mechanical equipment technical field, concretely is a kind of casting device and casting method of engine flywheel, including installation base, the top of the installation base is provided with stripping structure, the stripping structure includes the limiting slide bar fixed in the top of installation base both sides, the side of multiple limiting slide bars is provided with limiting telescopic link, the outer wall of multiple limiting slide bars and limiting telescopic link is penetrated with casting base through through-passage, the inner wall of the casting base is equipped with mould mouth, the inner wall of the mould mouth is slidably connected with casting mould base.The beneficial effects of the present application are to effectively improve the industry problems of traditional casting equipment forming defects, slow cooling, improve the compactness and dimensional accuracy of engine flywheel casting, effectively avoid casting demoulding bump, damage, deformation problem, reduce medium pollution, pipeline blockage probability, reduce the operation and maintenance cost of equipment daily cleaning and parts replacement.

Description

Technical Field

[0001] This invention relates to the field of engine flywheel casting and processing machinery and equipment, specifically to a casting device and casting method for an engine flywheel. Background Technology

[0002] The flywheel is an inertial wheel made of cast iron. Its function is to store a portion of the energy generated during the engine's power stroke, which is used to overcome the resistance of other auxiliary strokes, make the crankshaft rotate evenly, and improve the engine's ability to overcome short-term overloads, making it easier for the vehicle to start.

[0003] Currently, traditional engine flywheel casting equipment suffers from poor cooling uniformity, often employing single-point cooling or natural heat dissipation. This results in inconsistent overall mold cooling rates and significant temperature differences between thick and thin areas of the flywheel casting, easily leading to casting defects such as shrinkage porosity, blowholes, deformation, and cracks. Furthermore, the lack of a constant-temperature insulation structure causes rapid heat dissipation after molten metal pouring, resulting in insufficient pouring and uneven casting density, affecting the structural strength and dimensional accuracy of the flywheel blank. Demolding is also inconvenient; the casting adheres tightly to the mold after casting, creating significant demolding resistance. Manual demolding easily causes damage to the casting and mold wear, limiting mass production efficiency. Moreover, the coolant cannot be recycled in a closed loop. Traditional cooling systems are mostly direct-discharge structures, with coolant discharged directly after a single use, resulting in high resource consumption and production costs. Additionally, the lack of adaptive heating and cooling functions makes it impossible to adapt to the temperature control requirements of different environments and casting processes. Therefore, this invention provides a casting apparatus and method for engine flywheels to solve the problems mentioned in the background. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing a casting device and method for engine flywheels. It effectively improves the industry problems of numerous forming defects and slow cooling in traditional casting equipment, enhances the density and dimensional accuracy of engine flywheel castings, and effectively avoids problems such as casting knocks, breakage, and deformation during demolding. It can also reduce the probability of media contamination and pipeline blockage, and lower the maintenance costs of daily equipment cleaning and parts replacement.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a casting apparatus and casting method for an engine flywheel, comprising: The mounting base has a demolding structure at its top. The demolding structure includes limiting slide rods fixed to both sides of the top of the mounting base. A limiting telescopic rod is provided on one side of each of the limiting slide rods. A casting base is passed through the outer walls of the multiple limiting slide rods and the limiting telescopic rod through a through-hole. A mold opening is provided on the inner wall of the casting base. A casting mold seat is slidably connected to the inner wall of the mold opening. The cooling coil is located in an internal mounting groove opened in the inner wall of the casting base and is fixed to the bottom end of the casting mold base. A cooling sealing plate is installed on one side of the outer wall of the casting base. A bottom coolant tank is fixedly connected to one side of the cooling sealing plate. The bottom coolant tank is located at the bottom end of the cooling coil and is connected through a transmission pipe. Two coolant transmission pipes are installed on one side of the outer wall of the bottom coolant tank. An insulation board is located at the top of the casting mold base. Two insulation pipes are fixedly connected to one side of the outer wall of the insulation board. A drive pump is installed at the end of the two insulation pipes away from the insulation board. A drive pipe is installed at the output end of the drive pump. A liquid storage tank is installed at the end of the drive pipe away from the drive pump.

[0006] The beneficial effects of adopting the above-mentioned further solution are as follows: the equipment uses a mounting base as the load-bearing benchmark for the whole machine, and symmetrical limit sliding rods are arranged on both sides of the top of the mounting base to reduce mold offset and jamming; multiple sets of limit telescopic rods cooperate with the limit sliding rods to form a limit guide, and the outer walls of the limit sliding rods and limit telescopic rods pass through the through-hole to assemble the casting base, so as to realize the casting base can freely rise and fall and slide along the guide rods; a mold opening is opened inside the casting base, and a casting mold seat is slidably assembled inside the mold opening; the casting mold seat is the forming cavity of the flywheel casting, which can be replaced with a shape and size matching the engine flywheel; an internal mounting groove is opened on the inner wall of the casting base for embedded and fixed installation of cooling coils; the cooling coils are fitted and fixed to the bottom of the casting mold seat, which can perform fitted cooling treatment on the forming area of ​​the mold; compared with the traditional external cooling structure, the heat exchange efficiency is higher and the cooling is more uniform. A cooling plate is installed on one side of the outer wall of the casting base to provide closed protection for the internal cooling structure, preventing casting dust and high-temperature impurities from entering the cooling chamber. The bottom coolant tank is fixed to the outside of the cooling plate. The bottom coolant tank is connected to the cooling coil through a transmission pipe, which can realize the stable delivery and return collection of coolant. Two sets of coolant transmission pipes are installed on the outside of the bottom coolant tank to provide medium transmission for the subsequent heat dissipation and heating circulation structure. An insulation plate is installed on the top of the casting mold base. Two sets of insulation pipes are connected to the outside of the insulation plate. Through the connection of the pipeline to the drive pump, drive pipe and liquid storage tank, the insulation medium can be circulated and delivered to continuously maintain the constant temperature at the top of the mold, which is suitable for casting temperature control requirements.

[0007] Furthermore, a connecting plate is installed between the two mounting bases, and a plurality of spring rods are fixedly connected to the top of the connecting plate, with the plurality of spring rods all installed at the bottom end of the casting base.

[0008] Furthermore, the top of the insulation board is fixedly connected to a top plate by multiple connecting screws, and a limiting sliding sleeve is installed between the multiple connecting screws at the top of the insulation board. The inner walls of the multiple limiting sliding sleeves are slidably connected to the outer wall of the limiting telescopic rod, and the tops of the multiple limiting sliding sleeves are fixedly connected to the top of the top plate.

[0009] Furthermore, a top liquid inlet is installed at the top of the top plate, and the bottom end of the top liquid inlet passes through the top plate, the insulation plate, and the casting mold in sequence. The beneficial effects of adopting the above-mentioned further solution are as follows: the fixed assembly connecting plate between the two sets of mounting bases can connect the two independent bases into a whole, improving the overall structure of the machine. Multiple sets of spring rods are arranged at the top of the connecting plate, and the top of the spring rods are connected to the bottom of the casting base to form an elastic buffer support, which can help the mold to return to its original position smoothly. The top of the insulation plate is locked and fixed by multiple sets of connecting screws, which can prevent the top plate and the insulation plate from having gaps or loosening, ensuring the stability of the internal environment of the mold. The top of the insulation plate is arranged between multiple sets of connecting screws, and the limiting sliding sleeve is slidably connected to the outer wall of the limiting telescopic rod, which can guide and constrain the alignment of the top plate and the insulation plate, ensuring accurate alignment of each component during mold closing and demolding. The top liquid inlet is installed in the center of the top of the top plate, and the bottom of the top liquid inlet passes through the top plate, the insulation plate and the casting mold in sequence, which can realize the injection of molten metal into the mold forming cavity, avoiding the problems of splashing and uneven pouring that are easy to occur in traditional side feeding.

[0010] Furthermore, an internal partition plate is installed on the inner wall of the internal mounting groove, and the internal partition plate is located between the cooling coil and the bottom coolant tank.

[0011] Furthermore, a liquid storage tank is installed at the end of the coolant transfer pipe away from the cooling coil, and connecting pipes are installed on both sides of the top of the liquid storage tank. A heat dissipation box is installed at the end of the two connecting pipes away from the liquid storage tank through a connector.

[0012] Furthermore, an internal heat dissipation pipe is fixedly connected to the inner wall of the heat dissipation box, both ends of which are connected to a connector, and a control board is installed on the front end face of the heat dissipation box, with a cooling fan installed on the front end face of the heat dissipation box at one side of the control board.

[0013] The beneficial effects of adopting the above-mentioned further solution are as follows: An internal partition plate is fixedly installed on the inner wall of the internal mounting groove of the casting base. The internal partition plate is arranged between the cooling coil and the bottom coolant tank, which can isolate the area, optimize the internal pipeline layout, and avoid pipeline entanglement and blockage. The end of the coolant transmission pipe away from the cooling coil is connected to the liquid storage tank. The liquid storage tank serves as a coolant transfer and storage tank, which can collect the returned coolant. Connecting pipes are symmetrically installed on both sides of the top of the liquid storage tank. The connecting pipes are connected to the heat sink via detachable joints, forming a coolant heat dissipation circulation channel. Internal heat dissipation pipes are fixedly arranged inside the heat sink. Both ends of the internal heat dissipation pipes are connected to the connecting pipes via joints, allowing the coolant to continuously circulate inside the heat dissipation pipes. Heat exchange is completed between the pipe walls and the air in the tank, achieving cooling and resetting of the high-temperature coolant. A control board is installed at the front of the heat sink for parameter adjustment. A cooling fan is equipped on the side of the control board, which can actively accelerate the air circulation inside the tank, enhance the heat exchange effect, and improve the coolant cooling efficiency.

[0014] Furthermore, a heating box is fixedly connected to the top of the liquid storage tank, and a top cover is fixedly connected to the top of the heating box.

[0015] Furthermore, the inner wall of the heating box is equipped with multiple heating rods, and the heating box is connected to the heat dissipation box.

[0016] Furthermore, a return pipe is fixedly connected to one side of the top of the heating box, and one end of the two return pipes is fixed to one side of the insulation board. The beneficial effects of adopting the above-mentioned further solution are that a heating box is fixedly mounted on the top of the liquid storage tank, and a top cover is installed on the top of the heating box to seal and protect the internal heating structure, preventing dust and impurities from entering the tank. Multiple heating rods are evenly distributed on the inner wall of the heating box to avoid local overheating and excessive temperature difference. The heating box and the heat dissipation box are interconnected to form heat dissipation and cooling. A return pipe is fixedly mounted on one side of the top of the heating box, and the end of the return pipe is connected and fixed to one side of the insulation board, which can stably transport the constant temperature medium after heating and temperature adjustment to the inside of the insulation board, while realizing the medium circulation return.

[0017] A method for casting an engine flywheel, the method specifically includes the following steps: S1: In the initial standby state, the casting base and casting mold seat return to the mold closing reference position, the limit telescopic rod and limit sliding sleeve are in the zero state, the spring rod elastically resets, and the cooling, heat preservation, and circulating temperature control systems are ready for no-load operation. Operators, based on the specifications of the flywheel to be processed and the casting process requirements, preset core parameters such as heat dissipation temperature, heating temperature, and media circulation rate on the control board to complete the pre-processing of the equipment.

[0018] S2: The drive limit telescopic rod works in conjunction with the limit slide rod to guide and reset, driving the casting base, insulation plate and top plate to close the mold. The top structure is locked and fixed by the connecting screw to ensure that the mold cavity is tightly sealed.

[0019] S3: Start the drive pump to drive the insulation medium to circulate in a closed loop along the insulation pipe, return pipe, and heating box. The heating rod heats the medium as needed to preheat the entire mold at a constant temperature, eliminating the low temperature difference of the mold and preventing the molten metal from solidifying rapidly when it cools down, which would cause molding defects. Then start the cooling circulation system to ensure smooth flow of the cooling medium in the cooling pipes and standby.

[0020] S4: Molten metal is injected into the casting mold cavity at a uniform speed through the top liquid inlet. After pouring, the feeding channel is closed. The top insulation plate is used to maintain a constant temperature in the upper part of the mold, and the bottom cooling coil slowly and evenly exchanges heat to cool down, so as to realize the gradient and orderly cooling and forming of the flywheel casting, avoiding stress concentration and forming defects.

[0021] S5: During the molding and cooling process, the high-temperature coolant after heat exchange in the cooling coil flows into the bottom coolant tank through the transmission pipe, and then flows into the liquid storage tank through the coolant transmission pipe. According to the real-time medium temperature, the heat dissipation box is forced to cool down through the cooling fan and internal heat dissipation pipe, or the temperature is replenished and the pressure is stabilized through the heating box and heating rod. The temperature-adjusted medium flows back to the cooling and heat preservation structure to form a closed loop, continuously maintaining the stability of the mold temperature field.

[0022] S6: After the flywheel casting has completely cooled and solidified, the limit telescopic rod retracts, and in conjunction with the guiding action of the limit slide rod, it drives the casting base to descend smoothly. The spring rod elastically buffers and unloads the force, completing the demolding of the casting. The operator takes out the formed flywheel casting and checks the appearance and dimensional accuracy of the finished product.

[0023] The beneficial effects of this invention are: 1) The equipment of this invention is equipped with bottom cooling coil cooling and top insulation plate constant temperature insulation. Combined with the temperature control structure composed of heat dissipation box and heating box, it can realize the temperature control of mold zone. The bottom close-fitting cooling structure can quickly and evenly remove excess heat from the mold forming area, avoiding heat accumulation in the thick wall area of ​​the casting and causing shrinkage and cracks. The top closed environmental temperature control structure can slow down the heat loss during casting, effectively improving the industry problems of many forming defects and slow cooling in traditional casting equipment, and improving the density and dimensional accuracy of engine flywheel castings.

[0024] 2) This invention employs a demolding structure with a limiting slide bar, a limiting telescopic rod guide, and a spring rod for elastic buffering. This structure enables linear lifting and lowering of the casting base and the mold base. Compared to the traditional manual forced demolding method, this effectively avoids problems such as bumps, damage, and deformation of the castings during demolding. It also simplifies the demolding process, reduces manual intervention, and improves the efficiency of batch demolding of flywheel castings and the yield rate of finished products. 3) The coolant of this invention can be recycled and reused after heat dissipation and temperature adjustment, and the insulation medium can be continuously circulated through the heating box and return pipe, replacing the traditional direct discharge medium consumption mode. This significantly reduces the resource consumption of coolant and insulation medium. At the same time, the closed circulation structure can reduce the probability of medium contamination and pipeline blockage, reduce the maintenance costs of daily equipment cleaning and parts replacement, and is suitable for long-term continuous mass production conditions. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention from another angle; Figure 3 This is a schematic diagram of the heating box connection structure of the present invention; Figure 4 This is a schematic diagram of the heating box connection structure from another angle according to the present invention; Figure 5 This is a schematic diagram of the exploded structure of the present invention; Figure 6 This is a schematic diagram of the heat sink connection structure of the present invention; Figure 7 This is a schematic diagram of the internal structure of the heating box of the present invention; Figure 8 This is a schematic diagram of the right-side cross-sectional structure of the present invention; Figure 9 This is a schematic diagram of the connection structure of the mounting base components of the present invention; Figure 10 This is a schematic diagram of the exploded structure from another angle of the present invention.

[0026] The attached diagram lists the components represented by each number as follows: 1. Mounting base; 11. Limiting slide bar; 12. Limiting telescopic rod; 13. Connecting plate; 14. Spring rod; 15. Casting base; 16. Through-hole; 17. Casting mold base; 18. Mold opening; 19. Insulation plate; 110. Connecting screw; 111. Limiting sliding sleeve; 112. Top plate; 113. Top liquid inlet; 114. Casting mold; 2. Cooling sealing plate; 21. Internal mounting groove; 22. Cooling plate 23. Internal partition plate; 24. Transfer pipe; 25. Bottom coolant tank; 26. Coolant transfer pipe; 27. Liquid storage tank; 28. Connecting pipe; 29. ​​Connector; 210. Heat sink; 211. Control board; 212. Cooling fan; 213. Internal heat sink; 3. Insulation pipe; 31. Drive pump; 32. Drive pipe; 33. Heating box; 34. Return pipe; 35. Top cover; 36. Heating rod. Detailed Implementation

[0027] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0028] The present invention provides the following preferred embodiments. like Figure 1-10 As shown, a casting apparatus and casting method for an engine flywheel include: Mounting base 1, with a demolding structure at its top, includes limiting slide rods 11 fixed to both sides of the top of mounting base 1. A limiting telescopic rod 12 is provided on one side of each limiting slide rod 11. A casting base 15 passes through the outer walls of the limiting slide rods 11 and the limiting telescopic rod 12 via a through-hole 16. A mold opening 18 is provided on the inner wall of the casting base 15, and a casting mold seat 17 is slidably connected to the inner wall of the mold opening 18. The equipment uses mounting base 1 as the overall load-bearing reference. The limiting slide rods 11 are symmetrically arranged on both sides of the top of mounting base 1 to reduce mold offset and jamming. Multiple sets of limiting telescopic rods 11... 2. It cooperates with the limiting slide rod 11 to form a limiting guide. The outer wall of the limiting slide rod 11 and the limiting telescopic rod 12 passes through the through hole 16 to assemble the casting base 15, so that the casting base 15 can freely rise and fall and slide along the guide rod. The casting base 15 has a mold opening 18 inside. The casting mold seat 17 is slidably assembled inside the mold opening 18. The casting mold seat 17 is the forming cavity of the flywheel casting. It can be replaced with the outer dimensions that match the engine flywheel. A connecting plate 13 is installed between the two mounting bases 1. Multiple spring rods 14 are fixedly connected to the top of the connecting plate 13. Multiple spring rods 14 are all installed at the bottom of the casting base 15.

[0029] The top of the insulation board 19 is fixedly connected to the top plate 112 by multiple connecting screws 110. A limiting sliding sleeve 111 is installed between the connecting screws 110 at the top of the insulation board 19. The inner walls of the multiple limiting sliding sleeves 111 are slidably connected to the outer walls of the limiting telescopic rod 12, and the tops of the multiple limiting sliding sleeves 111 are fixedly connected to the top of the top plate 112. A top liquid inlet 113 is installed at the top of the top plate 112. The bottom end of the top liquid inlet 113 passes through the top plate 112, the insulation board 19, and the casting mold 114 in sequence. A connecting plate 13 is fixedly assembled between the two sets of mounting bases 1, which can connect the two independent bases into a whole, improving the overall structure of the machine. Multiple spring rods 14 are arranged at the top of the connecting plate 13. The tops of the spring rods 14 are connected to and supported at the bottom of the casting base 15, forming an elastic buffer support. The support helps the mold to return to its stable position. The top of the insulation plate 19 is locked and fixed to the top plate 112 by multiple sets of connecting screws 110, which can prevent the top plate 112 and the insulation plate 19 from having gaps or loosening, and ensure the stability of the internal environment of the mold. The top of the insulation plate 19 is provided with a limiting sliding sleeve 111 between the multiple sets of connecting screws 110. The limiting sliding sleeve 111 slides on the outer wall of the limiting telescopic rod 12, which can guide and constrain the alignment of the top plate 112 and the insulation plate 19, ensuring accurate alignment of each component during mold closing and demolding. The top liquid inlet 113 is installed in the center of the top of the top plate 112. The bottom end of the top liquid inlet 113 passes through the top plate 112, the insulation plate 19 and the casting mold 114 in sequence, which can realize the injection of molten metal into the mold forming cavity, avoiding the problems of splashing and uneven pouring that are easy to occur in traditional side feeding. Cooling coil 22 is located in the internal mounting groove 21 opened in the inner wall of the casting base 15, and the cooling coil 22 is fixed to the bottom end of the casting mold base 17. A cooling sealing plate 2 is installed on one side of the outer wall of the casting base 15. A bottom coolant tank 25 is fixedly connected to one side of the cooling sealing plate 2. The bottom coolant tank 25 is located at the bottom end of the cooling coil 22 and is connected through a transmission pipe 24. Two coolant transmission pipes 26 are installed on one side of the outer wall of the bottom coolant tank 25. The insulation plate 19 is located at the top of the casting mold base 17. Two insulation pipes 3 are fixedly connected to one side of the outer wall of the insulation plate 19. A drive pump 31 is installed at the end of the two insulation pipes 3 away from the insulation plate 19. A drive pipe 32 is installed at the output end of the drive pump 31. A liquid storage tank 27 is installed at the end of the drive pipe 32 away from the drive pump 31. An internal mounting groove 21 is opened on the inner wall of the casting base 15 for embedded and fixed installation of the cooling coil 22. The cooling coil 22 is attached to the bottom of the casting mold base 17, which can perform attached cooling treatment on the forming area of ​​the mold. Compared with the traditional external cooling structure, the heat exchange efficiency is higher and the cooling is more uniform.

[0030] A cooling sealing plate 2 is installed on one side of the outer wall of the casting base 15, which can provide closed protection for the internal cooling structure and prevent casting dust and high-temperature impurities from entering the cooling cavity. The bottom coolant tank 25 is fixed to the outside of the cooling sealing plate 2. The bottom coolant tank 25 is connected to the cooling coil 22 through the transmission pipe 24, which can realize the stable delivery and return collection of coolant. Two sets of coolant transmission pipes 26 are installed on the outside of the bottom coolant tank 25 to provide medium transmission for the subsequent heat dissipation and heating circulation structure. The top of the casting mold base 17 is equipped with a heat insulation plate 19. Two sets of heat insulation pipes 3 are connected to the outside of the heat insulation plate 19. Through the pipeline connection to the drive pump 31, drive pipe 32 and liquid storage tank 27, the heat insulation medium can be circulated and delivered to continuously maintain the constant temperature at the top of the mold, which is suitable for casting temperature control requirements.

[0031] An internal partition plate 23 is installed on the inner wall of the internal mounting slot 21. The internal partition plate 23 is located between the cooling coil 22 and the bottom coolant tank 25. A liquid storage tank 27 is installed at the end of the coolant transfer pipe 26 away from the cooling coil 22. Connecting pipes 28 are installed on both sides of the top of the liquid storage tank 27. A heat sink 210 is installed at the end of the two connecting pipes 28 away from the liquid storage tank 27 through a connector 29. An internal heat sink 213 is fixedly connected to the inner wall of the heat sink 210. Both ends of the internal heat sink 213 are connected to the connector 29. A control board 211 is installed on the front face of the heat sink 210. A cooling fan 212 is installed on the front face of the heat sink 210 on one side of the control board 211. The internal partition plate 23 is fixedly assembled on the inner wall of the internal mounting slot 21 of the cast base 15. The internal partition plate 23 is arranged between the cooling coil 22 and the bottom coolant tank 25, which can isolate the area, optimize the internal pipeline layout, and avoid pipeline entanglement and blockage.

[0032] The end of the coolant transfer pipe 26 away from the cooling coil 22 is connected to the liquid storage tank 27. The liquid storage tank 27 serves as a coolant transfer and storage tank, which can collect the returned coolant. The top two sides of the liquid storage tank 27 are symmetrically equipped with connecting pipes 28. The connecting pipes 28 are connected to the heat sink 210 through detachable connectors 29 to form a coolant heat dissipation circulation channel. The heat sink 210 has internal heat dissipation pipes 213 fixedly arranged inside. The two ends of the internal heat dissipation pipes 213 are connected to the connecting pipes 28 through connectors 29. The coolant can continuously circulate inside the heat dissipation pipes and complete heat exchange with the air in the tank through the pipe walls to achieve the cooling and reset of the high-temperature coolant. The front end of the heat sink 210 is equipped with a control board 211 for parameter adjustment. The side of the control board 211 is equipped with a cooling fan 212, which can actively accelerate the air circulation inside the tank, enhance the heat exchange effect, and improve the cooling efficiency of the coolant.

[0033] A heating box 33 is fixedly connected to the top of the liquid storage tank 27. A top cover 35 is fixedly connected to the top of the heating box 33. Multiple heating rods 36 are installed on the inner wall of the heating box 33. The heating box 33 is connected to the heat dissipation box 210. A return pipe 34 is fixedly connected to one side of the top of the heating box 33. One end of the two return pipes 34 is fixed to one side of the insulation plate 19. The heating box 33 is fixedly mounted on the top of the liquid storage tank 27. The top cover 35 is installed on the top of the heating box 33 to seal and protect the internal heating structure and prevent dust and impurities from entering the box. Multiple sets of heating rods 36 are evenly distributed on the inner wall of the heating box 33 to avoid local overheating and excessive temperature difference. The heating box 33 is connected to the heat dissipation box 210 to form heat dissipation and cooling. A return pipe 34 is fixedly installed on one side of the top of the heating box 33. The end of the return pipe 34 is connected to one side of the insulation plate 19 to stably transport the heated and regulated constant temperature medium into the insulation plate 19 and realize medium circulation return.

[0034] A method for casting an engine flywheel, characterized in that, S1: In the initial standby state, the casting base 15 and casting mold seat 17 return to the mold closing reference position, the limit telescopic rod 12 and the limit sliding sleeve 111 are in the zero state, the spring rod 14 elastically resets, and the cooling, heat preservation, and circulating temperature control systems are ready for no-load operation. The operator, based on the specifications of the flywheel to be processed and the casting process requirements, presets core parameters such as heat dissipation temperature, heating temperature, and media circulation rate through the control board 211 to complete the pre-processing of the equipment.

[0035] S2: The drive limit telescopic rod 12, in conjunction with the limit slide rod 11, guides and resets the casting base 15, insulation plate 19, and top plate 112 to close the mold. The top structure is locked and fixed by the connecting screw 110 to ensure that the mold cavity is tightly sealed.

[0036] S3: Start the drive pump 31 to drive the insulation medium to circulate in a closed loop along the insulation pipe 3, return pipe 34, and heating box 33. The heating rod 36 heats the medium as needed to preheat the entire mold at a constant temperature, eliminate the low temperature difference of the mold, and avoid the rapid solidification of the molten metal when it cools down, which will cause molding defects. Then start the cooling circulation system to ensure smooth flow of the cooling medium in the cooling pipe and standby.

[0037] S4: Molten metal is injected into the cavity of the casting mold 114 at a uniform speed through the top liquid inlet 113. After the pouring is completed, the feeding channel is closed. The top insulation plate 19 is used to maintain the constant temperature of the upper part of the mold, and the bottom cooling coil 22 slowly and evenly exchanges heat to cool down, so as to realize the gradient and orderly cooling and forming of the flywheel casting, and avoid stress concentration and forming defects.

[0038] S5: During the molding and cooling process, the high-temperature coolant after heat exchange in the cooling coil 22 flows into the bottom coolant tank 25 through the transmission pipe 24, and then flows into the liquid storage tank 27 through the coolant transmission pipe 26. According to the real-time medium temperature, the heat dissipation box 210 is forced to cool down through the cooling fan 212 and the internal heat dissipation pipe 213, or the heating box 33 and heating rod 36 are used to supplement the temperature and stabilize the pressure. The temperature-adjusted medium flows back to the cooling and heat preservation structure to form a closed loop and continuously maintain the stability of the mold temperature field.

[0039] S6: After the flywheel casting has completely cooled and solidified, the limiting telescopic rod 12 retracts, and in conjunction with the guiding action of the limiting slide rod 11, it drives the casting base 15 to descend smoothly. The spring rod 14 elastically buffers and unloads the force, completing the demolding of the casting. The operator takes out the formed flywheel casting and checks the appearance and dimensional accuracy of the finished product.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A casting apparatus for an engine flywheel, characterized in that, include Mounting base (1), the top of the mounting base (1) is provided with a demolding structure, the demolding structure includes limiting slide rods (11) fixed to both sides of the top of the mounting base (1), a limiting telescopic rod (12) is provided on one side of the multiple limiting slide rods (11), the outer walls of the multiple limiting slide rods (11) and the limiting telescopic rod (12) are penetrated by a casting base (15) through a through hole (16), the inner wall of the casting base (15) is provided with a mold opening (18), and a casting mold seat (17) is slidably connected to the inner wall of the mold opening (18). Cooling coil (22) is located in the internal mounting groove (21) opened in the inner wall of the casting base (15), and the cooling coil (22) is fixed to the bottom end of the casting mold base (17). A cooling sealing plate (2) is installed on one side of the outer wall of the casting base (15). A bottom coolant tank (25) is fixedly connected to one side of the cooling sealing plate (2). The bottom coolant tank (25) is located at the bottom end of the cooling coil (22) and is connected through a transmission pipe (24). Two coolant transmission pipes (26) are installed on one side of the outer wall of the bottom coolant tank (25). Insulation board (19) is located at the top of casting mold base (17). Two insulation pipes (3) are fixedly connected to one side of the outer wall of the insulation board (19). A drive pump (31) is installed at the end of the two insulation pipes (3) away from the insulation board (19). A drive pipe (32) is installed at the output end of the drive pump (31). A liquid storage tank (27) is installed at the end of the drive pipe (32) away from the drive pump (31).

2. The casting apparatus for an engine flywheel according to claim 1, characterized in that, A connecting plate (13) is installed between the two mounting bases (1), and a plurality of spring rods (14) are fixedly connected to the top of the connecting plate (13). The plurality of spring rods (14) are all installed at the bottom of the casting base (15).

3. The casting apparatus for an engine flywheel according to claim 1, characterized in that, The top end of the insulation board (19) is fixedly connected to the top plate (112) by a plurality of connecting screws (110), and the top end of the insulation board (19) is installed between the plurality of connecting screws (110) with a limiting sliding sleeve (111). The inner walls of the plurality of limiting sliding sleeves (111) are slidably connected to the outer wall of the limiting telescopic rod (12), and the top ends of the plurality of limiting sliding sleeves (111) are fixedly connected to the top end of the top plate (112).

4. The casting apparatus for an engine flywheel according to claim 3, characterized in that, The top end of the top plate (112) is equipped with a top liquid inlet (113), and the bottom end of the top liquid inlet (113) is connected to the top plate (112), the insulation plate (19) and the casting mold (114) in sequence.

5. The casting apparatus for an engine flywheel according to claim 1, characterized in that, The inner wall of the internal mounting groove (21) is fitted with an internal partition plate (23), which is located between the cooling coil (22) and the bottom coolant tank (25).

6. The casting apparatus for an engine flywheel according to claim 1, characterized in that, A liquid storage tank (27) is installed at one end of the coolant transfer pipe (26) away from the cooling coil (22). Connecting pipes (28) are installed on both sides of the top of the liquid storage tank (27). A heat sink (210) is installed at one end of the two connecting pipes (28) away from the liquid storage tank (27) through a connector (29).

7. The casting apparatus for an engine flywheel according to claim 6, characterized in that, The inner wall of the heat sink (210) is fixedly connected with an internal heat sink pipe (213). Both ends of the internal heat sink pipe (213) are connected to a connector (29). A control board (211) is installed on the front end of the heat sink (210). A cooling fan (212) is installed on the front end of the heat sink (210) on one side of the control board (211).

8. The casting apparatus for an engine flywheel according to claim 1, characterized in that, A heating box (33) is fixedly connected to the top of the liquid storage tank (27), and a top cover (35) is fixedly connected to the top of the heating box (33).

9. The casting apparatus for an engine flywheel according to claim 8, characterized in that, The inner wall of the heating box (33) is equipped with multiple heating rods (36), and the heating box (33) is connected to the heat dissipation box (210). A return pipe (34) is fixedly connected to one side of the top of the heating box (33), and one end of the two return pipes (34) is fixed to one side of the insulation plate (19).

10. A method for casting an engine flywheel, characterized in that, The method specifically includes the following steps: S1: In the initial standby state of the equipment, the casting base (15) and casting mold base (17) return to the mold closing reference position, the limit telescopic rod (12) and the limit sliding sleeve (111) are in the zero state, the spring rod (14) is elastically reset, and the cooling, heat preservation and circulating temperature control system is on standby without load. According to the specifications of the flywheel to be processed and the casting process requirements, the operator presets the core parameters such as heat dissipation temperature, heating temperature, and medium circulation rate through the control board (211) to complete the pre-processing of the equipment; S2: Drive the limit telescopic rod (12) to cooperate with the limit slide rod (11) to guide and reset, drive the casting base (15), insulation plate (19), and top plate (112) to close the mold, and lock the top structure through the connecting screw (110) to ensure that the mold cavity is tightly sealed. S3: Start the drive pump (31) to drive the insulation medium to circulate in a closed loop along the insulation pipe (3), return pipe (34), and heating box (33). The heating medium is heated as needed by the heating rod (36) to preheat the mold at a constant temperature, eliminate the low temperature difference of the mold, and avoid the rapid solidification of the molten metal when it is cold, which will cause molding defects. Then start the cooling circulation system to ensure smooth flow of the cooling medium in the cooling pipe and standby. S4: Molten metal is injected into the cavity of the casting mold (114) at a constant speed through the top liquid inlet (113). After the pouring is completed, the feeding channel is closed. The top insulation plate (19) is used to maintain the constant temperature of the upper part of the mold. The bottom cooling coil (22) slowly and evenly exchanges heat to cool down, so as to realize the gradient orderly cooling and forming of the flywheel casting and avoid stress concentration and forming defects. S5: During the molding and cooling process, the high-temperature coolant after heat exchange in the cooling coil (22) flows into the bottom coolant tank (25) through the transmission pipe (24), and then flows into the liquid storage tank (27) through the coolant transmission pipe (26); according to the real-time medium temperature, the heat sink (210) is forced to cool down by the heat sink fan (212) and the internal heat sink pipe (213), or by the heating box (33) and the heating rod (36) to replenish the temperature and stabilize the pressure. The medium after temperature adjustment flows back to the cooling and heat preservation structure to form a closed loop and continuously maintain the stability of the mold temperature field; S6: After the flywheel casting has completely cooled and solidified, the limiting telescopic rod (12) retracts, and with the guiding action of the limiting slide rod (11), it drives the casting base (15) to descend smoothly. The spring rod (14) provides elastic buffering and unloading, and the casting is demolded. The operator takes out the formed flywheel casting and checks the appearance and dimensional accuracy of the finished product.

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