A turbocharger volute casting device

Abstract

The present invention relates to the technical field of turbocharger casting, and discloses a turbocharger volute casting device, comprising a base, a frame arranged on the base, a hydraulic assembly arranged on the base, a mold assembly arranged on the hydraulic assembly, and a casting mechanism arranged on the base for casting the volute; the mold assembly is provided with a heating assembly for preheating the volute casting, and a heat exchange mechanism for cooling the volute casting; the heat exchange mechanism includes a heat exchange shell. The turbocharger volute casting device, through this arrangement, can avoid rapid cooling causing a large temperature gradient between the surface and the interior of the volute casting, thereby inducing thermal stress that causes deformation or cracking of the casting. By gradually cooling the casting in the mold and adjusting the cooling rate, the temperature gradient can be reduced, the thermal stress can be reduced, and the risk of deformation and cracking of the volute casting can be reduced, thereby improving the dimensional accuracy and shape stability of the volute casting.

Description

Technical Field

[0001] The invention belongs to the technical field of turbocharger casting, and in particular relates to a turbocharger volute casting device. Background Art

[0002] The turbocharger volute is a key component of a turbocharger. Its function is to guide and collect high-temperature, high-pressure exhaust gases from the engine and transfer the exhaust gas's energy to the turbine, driving its rotation. This, in turn, drives the coaxial compressor impeller, increasing the engine's air intake, improving its power and torque output, while reducing fuel consumption and exhaust emissions. Given the turbocharger volute's important role in improving engine performance and reducing energy consumption and emissions, a casting process is required to manufacture turbocharger volutes of various specifications and structures to meet the requirements of different engine models and performance. This ensures excellent strength, heat resistance, corrosion resistance, and precise size and shape, thereby guaranteeing the overall performance and reliability of the turbocharger.

[0003] The existing turbocharger vortex casing casting device has many shortcomings and deficiencies in practical applications: First, the existing casting device lacks an effective preheating function. When the mold is directly in contact with the high-temperature molten metal in the unpreheated state, the surface temperature of the mold will rise sharply, while the temperature inside the mold is low, forming a large temperature gradient. This temperature difference will not only cause thermal stress in the mold, but also affect the filling ability of the molten metal, causing the molten metal to flow poorly in the mold, and easily resulting in casting defects such as cold shut and insufficient pouring, which seriously affect the appearance quality and internal structural integrity of the vortex casing casting; Second, in the cooling treatment link after the vortex casing casting is completed, the existing cooling treatment method has obvious defects in controlling the cooling speed. The currently commonly used water cooling method has a cooling speed that is too fast. Since the internal organization and structure of the vortex casing casting material will undergo complex phase changes during the solidification process, the excessively fast cooling speed will rapidly increase the temperature gradient inside the casting, and the shrinkage rates of different parts will be inconsistent, thereby generating large internal stress. When the internal stress exceeds the tensile strength of the vortex casing casting, it will cause cracks, seriously affecting the performance and reliability of the casting.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a turbocharger volute casting device is provided to achieve a purpose with greater practical value. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a turbocharger volute casting device, which is achieved by the following specific technical means:

[0006] A turbocharger volute casting device comprises a base, a frame arranged on the base, a hydraulic assembly arranged on the base, a mold assembly arranged on the hydraulic assembly, and a casting mechanism arranged on the base for casting the volute;

[0007] The mold assembly is provided with a heating assembly for preheating the volute casting, and a heat exchange mechanism for cooling the volute casting;

[0008] The heat exchange mechanism includes a heat exchange shell, and a cooling fan is fixedly installed inside the heat exchange shell. A heat exchange component and a refrigeration component for cooling the volute casting are provided on the left side of the heat exchange shell. The heat exchange component includes a hot water exchange pipe for cooling and heat exchange, and the refrigeration component includes a condenser for condensation and cooling, and the hot water exchange pipe is sleeved on the outer periphery of the condenser. An adaptive component is also provided between the cooling fan and the heat exchange component. By driving the cooling fan, the external cooling air is driven along the adaptive component into the heat exchange shell, and the cooling air is blown onto the hot water exchange pipe to gradually cool the cooling water in the pipe.

[0009] As a further description of the above technical solution: by sliding the induction slider on the sliding rheostat, the resistance value of the sliding rheostat can be accurately controlled, thereby realizing the adjustment of the current in the refrigerator. When the wind force driven by the cooling fan is small, the resistance is large and the current is reduced, thereby realizing gradual cooling and heat exchange of the hot water exchange pipe; when the wind force driven by the cooling fan is large, the resistance is small and the current is increased, thereby enhancing the cooling and heat exchange effect of the hot water exchange pipe. Through this precise control method, the cooling power of the refrigerator can be automatically adjusted according to the change of the cooling air volume, thereby ensuring the stability and reliability of the cooling process, avoiding quality problems caused by too fast or too slow cooling speed, and through this setting, it can be avoided that a large temperature gradient is generated between the surface and the interior of the vortex casting due to rapid cooling, thereby inducing thermal stress and causing deformation or cracking of the casting. By gradually cooling the casting in the mold and adjusting the cooling speed, the temperature gradient can be reduced, the thermal stress can be reduced, thereby reducing the risk of deformation and cracking of the vortex casting, and improving the dimensional accuracy and shape stability of the vortex casting.

[0010] Furthermore, the mold assembly includes an upper mold base and a lower mold base, and both the upper mold base and the lower mold base are provided with a cavity for casting the volute. The lower mold base is provided with an inner cavity, and cooling water is provided in the inner cavity.

[0011] As a further description of the above technical solution: by opening an inner cavity in the lower die base and arranging cooling water in the inner cavity, this arrangement can, on the one hand, use the cooling water to preheat the lower die base, and on the other hand, use the cooling water to cool the formed volute casting, thereby further improving its applicability.

[0012] Furthermore, a positioning column is fixedly installed on the bottom of the upper die base, and a positioning groove matching the positioning column is opened on the lower die base.

[0013] As a further description of the above technical solution: the tightness of the mold closing between the upper mold base and the lower mold base can be improved by setting the positioning columns and the positioning grooves.

[0014] Furthermore, the hydraulic assembly includes a fixed base plate fixedly mounted on the base, and the lower mold base is fixedly mounted on the fixed base plate, a guide slide is fixedly mounted on the fixed base plate, a movable top plate is slidably mounted on the guide slide, and the upper mold base is fixedly mounted on the movable top plate, a hydraulic cylinder is fixedly mounted on the upper side of the frame, and the bottom of the hydraulic cylinder is fixedly connected to the movable top plate by a piston rod passing through the frame.

[0015] As a further description of the above technical solution: during the downward movement of the upper die base, the movable top plate slides along the guide slide bar to ensure the stability of the downward movement of the upper die base.

[0016] Furthermore, the heating assembly includes a heater fixedly mounted on the outer wall of the lower mold base, and a heating tube mounted in the cavity of the lower mold base, and one end of the heating tube is fixedly connected to the heater.

[0017] As a further description of the above technical solution: heat is generated through the synergistic effect of the heater and the heating tube, and the cooling water in the cavity of the lower mold base is preheated. This preheating operation can effectively reduce the temperature difference between the mold and the high-temperature molten metal, and can also reduce the pores and inclusions in the vortex casing casting, improve the surface quality and density, and thus improve the product quality of the vortex casing casting.

[0018] Furthermore, the adaptive component includes an adjustment seat fixedly mounted on the inner wall of the heat exchange shell, a ventilation hole being opened on the adjustment seat, a movable plate for covering the ventilation hole being movably mounted on one side of the adjustment seat, an air inlet hole for ventilation being opened on the movable plate, a movable sleeve and an elastic reset rubber ring being fixedly connected to a side of the movable plate facing the ventilation hole, and the movable sleeve is located on the outer periphery of the elastic reset rubber ring, and a limiting ring for limiting the movement of the movable plate is also fixedly mounted on the adjustment seat;

[0019] A dustproof net for preventing dust is also fixedly mounted on the inner wall of the heat exchange shell.

[0020] As a further description of the above technical solution: when the kinetic energy of the cooling fan is small, the wind force is small, the movement degree of the movable plate is small, and the cooling channel between the movable plate and the adjustment seat is also small. At this time, only a small amount of cooling wind is used to cool the cooling water inside the hot water exchange pipe; when the kinetic energy of the cooling fan is large, the wind force increases, the movement degree of the movable plate increases synchronously, and the cooling channel between the movable plate and the adjustment seat also increases. At this time, more cooling wind is used to cool the cooling water inside the hot water exchange pipe.

[0021] Furthermore, the ventilation hole includes a first channel and a second channel, and the inner diameter of the first channel is larger than the inner diameter of the second channel.

[0022] As a further description of the above technical solution: Since the inner diameter of the first channel is larger than the inner diameter of the second channel, the inner diameters of the first channel and the second channel gradually decrease. When the cooling airflow passes through the first channel and enters the second channel with a smaller inner diameter, the flow rate of the cooling airflow will increase due to the smaller cross-sectional area, thereby effectively accelerating the circulation speed of the cooling airflow and effectively improving the transmission efficiency of the cooling airflow.

[0023] Furthermore, the heat exchange assembly includes a driving water pump fixedly mounted on the inner wall of the heat exchange shell, one side of the driving water pump communicates with the inner cavity of the lower mold base through a water pipe, and the other side of the driving water pump is fixedly connected to a hot water exchange pipe, and the end of the hot water exchange pipe away from the driving water pump communicates with the inner cavity of the lower mold base;

[0024] Wherein, the water exchange water pipe is arranged in a cone shape.

[0025] As a further description of the above technical solution: the cooling water in the cavity of the lower mold base is transported to the heat exchange water pipe by driving the water pump, and the heat exchange water pipe is used to exchange heat with the cooling water flowing inside.

[0026] Furthermore, the refrigeration assembly includes a refrigerator fixedly mounted on the inner wall of the heat exchange shell, and the output end of the refrigerator is fixedly connected to the condenser pipe;

[0027] Wherein, the condenser is arranged in a cone shape.

[0028] As a further description of the above technical solution: through the synergistic effect between the refrigerator and the condenser, colder air is generated, and the cold air is transmitted to the hot water exchange pipe to achieve heat exchange with the hot water exchange pipe. The hot water exchange pipe surrounds the outer circumference of the condenser, so that the cold air emitted by the condenser can be transmitted to the hot water exchange pipe as soon as possible, thereby enhancing the heat exchange effect of the cooling water in the hot water exchange pipe.

[0029] Furthermore, an induction component for adjusting the output current of the refrigeration component is provided inside the adjustment seat, and the induction component includes a sliding rheostat fixedly assembled in the adjustment seat, an induction slide is slidably mounted on the sliding rheostat, a fixed rod is fixedly mounted on the induction slide, and the upper end of the fixed rod is fixedly connected to the movable sleeve.

[0030] As a further description of the above technical solution: This setting can avoid rapid cooling that causes a large temperature gradient between the surface and the interior of the vortex casting, which in turn induces thermal stress and causes deformation or cracking of the casting. By gradually cooling the casting in the mold and adjusting the cooling rate, the temperature gradient can be reduced, the thermal stress can be reduced, and the risk of deformation and cracking of the vortex casting can be reduced, thereby improving the dimensional accuracy and shape stability of the vortex casting.

[0031] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0032] 1. The turbocharger volute casting device drives the movable sleeve and the induction slider to slide on the sliding rheostat by moving the movable plate, which can accurately control the resistance value of the sliding rheostat, thereby realizing the adjustment of the current in the refrigerator. When the wind force driven by the cooling fan is small, the resistance is large and the current is reduced, thereby realizing gradual cooling and heat exchange of the hot water exchange pipe; when the wind force driven by the cooling fan is large, the resistance is small and the current is increased, thereby enhancing the cooling and heat exchange effect of the hot water exchange pipe. Through this precise control method, the cooling power of the refrigerator can be automatically adjusted according to the change of the cooling air volume, thereby ensuring the stability and reliability of the cooling process, avoiding quality problems caused by too fast or too slow cooling speed, and through this setting, it can be avoided that a large temperature gradient is generated between the surface and the interior of the volute casting due to rapid cooling, thereby causing thermal stress to cause deformation or cracking of the casting. By gradually cooling the casting in the mold and adjusting the cooling speed, the temperature gradient can be reduced, the thermal stress can be reduced, thereby reducing the risk of deformation and cracking of the volute casting, and improving the dimensional accuracy and shape stability of the volute casting.

[0033] 2. The turbocharger volute casting device realizes adaptive adjustment of the cooling air volume by controlling the wind force of the cooling fan to gradually increase from small to large. When the kinetic energy of the cooling fan is small, only a small amount of cooling air is needed to cool the cooling water inside the heat exchange water pipe, thereby avoiding energy waste; when the kinetic energy of the cooling fan is large, the cooling air volume is increased to ensure the cooling effect. Through this adaptive adjustment method, the cooling air volume can be accurately controlled according to actual cooling needs, the cooling efficiency can be improved, and energy consumption can be reduced. Moreover, by gradually cooling the casting in the mold and adjusting the cooling speed, the temperature gradient between the surface and the interior of the casting can be effectively reduced, and thermal stress can be reduced, which helps to reduce the deformation and cracking risks of the volute casting, improve the dimensional accuracy and shape stability of the volute casting, ensure that the volute casting can meet the performance requirements during subsequent use, and improve the reliability and service life of the product.

[0034] 3. This turbocharger volute casting device, by setting the heat exchange water pipe to a conical shape that is narrow at the front and wide at the back, allows the cooling air to cool the heat exchange water pipe from front to back, thereby achieving a gradually increasing and adaptive change in the cooling speed of the cooling water in the heat exchange water pipe. This setting can effectively control the cooling rate of the cooling water in the circulation pipe, ensuring that the cooling speed of the volute casting is uniform and reasonable during the molding process, avoiding quality problems caused by uneven cooling speed, such as deformation, air holes, etc., thereby ensuring the production quality of the volute casting.

[0035] 4. The turbocharger volute casting device starts the refrigerator while the cooling fan drives the cooling air flow to cool the hot water exchange pipe. Through the synergistic effect between the refrigerator and the condenser, cooler air is generated and the cold air is transmitted to the hot water exchange pipe to achieve heat exchange with the hot water exchange pipe. The hot water exchange pipe is wrapped around the outer periphery of the condenser so that the cold air emitted by the condenser can be transmitted to the hot water exchange pipe in the first time, which greatly enhances the heat exchange effect of the cooling water in the hot water exchange pipe. This synergistic cooling method can quickly reduce the temperature of the cooling water, improve the cooling efficiency, shorten the cooling time, and further improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 It shows a schematic diagram of the overall three-dimensional structure provided by an embodiment of the present invention;

[0038] Figure 2A schematic diagram of the installation structure of the base and the hydraulic assembly provided in an embodiment of the present invention is shown;

[0039] Figure 3 The schematic diagram of the installation structure of the hydraulic assembly and the mold assembly provided in the embodiment of the present invention is shown. Figure 1 ;

[0040] Figure 4 The schematic diagram of the installation structure of the hydraulic assembly and the mold assembly provided in the embodiment of the present invention is shown. Figure 2 ;

[0041] Figure 5 It shows a schematic diagram of the installation structure of the base and the casting assembly provided in an embodiment of the present invention;

[0042] Figure 6 A schematic diagram of the installation structure of the lower mold base and the heat exchange mechanism provided in an embodiment of the present invention is shown;

[0043] Figure 7 A schematic diagram of the installation structure of the lower mold base and the heating assembly provided in an embodiment of the present invention is shown;

[0044] Figure 8 A schematic diagram of a partial structure of a heat exchange mechanism according to an embodiment of the present invention is shown;

[0045] Figure 9 A schematic diagram of the installation structure of a heat exchange shell and a cooling fan according to an embodiment of the present invention is shown;

[0046] Figure 10 A schematic diagram of the installation structure of a heat exchange shell, a heat exchange assembly, and a refrigeration assembly according to an embodiment of the present invention is shown;

[0047] Figure 11 A schematic diagram of the expanded structure of a heat exchange component and a refrigeration component provided in an embodiment of the present invention is shown;

[0048] Figure 12 A schematic diagram of a local structure of an adaptive component provided according to an embodiment of the present invention is shown;

[0049] Figure 13 The embodiment of the present invention provides Figure 12 Enlarged schematic diagram of part A.

[0050] Legend:

[0051] 10. Base; 11. Frame;

[0052] 20. Hydraulic assembly; 21. Fixed bottom plate; 22. Movable top plate; 23. Guide slide; 24. Hydraulic cylinder;

[0053] 30. Mold assembly; 31. Upper mold base; 311. Positioning column; 32. Lower mold base; 321. Positioning groove;

[0054] 40. Casting mechanism;

[0055] 50. Heating assembly; 51. Heater; 52. Heating tube;

[0056] 60. Heat exchange mechanism; 61. Heat exchange shell; 62. Cooling fan; 63. Adaptive component; 631. Adjustment seat; 632. Ventilation hole; 6321. First channel; 6322. Second channel; 633. Movable plate; 6331. Air inlet; 634. Movable sleeve; 635. Elastic reset rubber ring; 636. Limiting ring; 64. Dust net; 65. Heat exchange component; 651. Driving water pump; 652. Hot water exchange pipe; 66. Refrigeration component; 661. Refrigerator; 662. Condenser; 67. Sensing component; 671. Sliding rheostat; 672. Sensing slide; 673. Fixing rod. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0058] See also Figures 1 to 13 A turbocharger volute casting device includes a base 10, a frame 11 arranged on the base 10, a hydraulic assembly 20 arranged on the base 10, a mold assembly 30 arranged on the hydraulic assembly 20, and a casting mechanism 40 arranged on the base 10 for casting the volute; the mold assembly 30 is provided with a heating assembly 50 for preheating the volute casting, and a heat exchange mechanism 60 for cooling the volute casting; the heat exchange mechanism 60 includes a heat exchange shell 61, a cooling fan 62 is fixedly installed inside the heat exchange shell 61, and a cooling fan 62 is fixedly installed on the left side of the heat exchange shell 61. The heat exchange component 65 and the refrigeration component 66 are used to cool the turbine casing casting. The heat exchange component 65 includes a hot water exchange pipe 652 for cooling and heat exchange, and the refrigeration component 66 includes a condenser 662 for condensation and cooling. The hot water exchange pipe 652 is sleeved on the outer periphery of the condenser 662. An adaptive component 63 is also provided between the cooling fan 62 and the heat exchange component 65. By driving the cooling fan 62, the external cooling air is driven along the adaptive component 63 into the heat exchange shell 61, and the cooling air is blown onto the hot water exchange pipe 652 to gradually cool the cooling water in the pipe.

[0059] By sliding the sensing slider 672 on the sliding rheostat 671, the resistance value of the sliding rheostat 671 can be accurately controlled, thereby realizing the adjustment of the current in the refrigerator 661. When the wind force driven by the cooling fan 62 is small, the resistance is large and the current is reduced, thereby realizing gradual cooling and heat exchange of the hot water exchange pipe 652; when the wind force driven by the cooling fan 62 is large, the resistance is small and the current is increased, thereby enhancing the cooling and heat exchange effect of the hot water exchange pipe 652. Through this precise control method, the cooling power of the refrigerator 661 can be automatically adjusted according to the change of the cooling air volume, thereby ensuring the stability and reliability of the cooling process and avoiding quality problems caused by too fast or too slow cooling speed. In addition, this setting can avoid rapid cooling causing a large temperature gradient between the surface and the interior of the volute casting, thereby inducing thermal stress and causing deformation or cracking of the casting. By gradually cooling the casting in the mold and adjusting the cooling speed, the temperature gradient can be reduced, the thermal stress can be reduced, thereby reducing the risk of deformation and cracking of the volute casting and improving the dimensional accuracy and shape stability of the volute casting.

[0060] See also Figures 3 to 6 The mold assembly 30 includes an upper mold base 31 and a lower mold base 32. Both the upper mold base 31 and the lower mold base 32 are provided with a cavity for volute casting. The lower mold base 32 is provided with an inner cavity, and cooling water is provided in the inner cavity. By providing an inner cavity in the lower mold base 32 and providing cooling water in the inner cavity, the lower mold base 32 can be preheated by using the cooling water on the one hand, and the formed volute casting can be cooled by using the cooling water on the other hand, thereby further improving its applicability.

[0061] See also Figures 3 and 4 A positioning column 311 is fixedly installed at the bottom of the upper mold base 31, and a positioning groove 321 matching the positioning column 311 is opened on the lower mold base 32; as the upper mold base 31 continues to move downward, the positioning column 311 on it is inserted into the positioning groove 321 on the lower mold base 32, so that the upper mold base 31 and the lower mold base 32 form a mold closing state, and the setting of the positioning column 311 and the positioning groove 321 can improve the tightness of the mold closing between the upper mold base 31 and the lower mold base 32.

[0062] See also Figures 1 to 4The hydraulic assembly 20 includes a fixed base plate 21 fixedly assembled on the base 10, and the lower die base 32 is fixedly assembled on the fixed base plate 21, a guide slide 23 is fixedly mounted on the fixed base plate 21, a movable top plate 22 is slidably mounted on the guide slide 23, and the upper die base 31 is fixedly assembled on the movable top plate 22, and a hydraulic cylinder 24 is fixedly assembled on the upper side of the frame 11, and the bottom of the hydraulic cylinder 24 is fixedly connected to the movable top plate 22 by a piston rod passing through the frame 11; by starting the hydraulic cylinder 24, the piston rod of the hydraulic cylinder 24 is used to push the movable top plate 22 and the upper die base 31 downward. During the downward movement of the upper die base 31, the movable top plate 22 slides along the guide slide 23 to ensure the stability of the downward movement of the upper die base 31.

[0063] See also Figures 6 and 7 The heating assembly 50 includes a heater 51 fixedly mounted on the outer wall of the lower mold base 32, and a heating tube 52 mounted in the cavity of the lower mold base 32, and one end of the heating tube 52 is fixedly connected to the heater 51; before the molten metal is injected into the cavity between the upper mold base 31 and the lower mold base 32 along the pouring gate, the heater 51 is first driven to make the heating tube 52 generate heat to preheat the cooling water in the cavity of the lower mold base 32. This preheating operation can effectively reduce the temperature difference between the mold and the high-temperature molten metal, reduce thermal stress, prevent mold cracking, extend the service life of the mold, and at the same time improve the filling capacity of the molten metal, avoid problems such as insufficient pouring and cold shut, and can also reduce the pores and inclusions in the vortex casing casting, improve the surface quality and density, and thus improve the product quality of the vortex casing casting.

[0064] See also Figures 8 to 12 The adaptive component 63 includes an adjustment seat 631 fixedly mounted on the inner wall of the heat exchange shell 61, with a ventilation hole 632 formed on the adjustment seat 631. A movable plate 633 for covering the ventilation hole 632 is movably mounted on one side of the adjustment seat 631. The movable plate 633 is provided with an air inlet hole 6331 for ventilation. A movable sleeve 634 and an elastic reset rubber ring 635 are fixedly connected to the side of the movable plate 633 facing the ventilation hole 632, and the movable sleeve 634 is located on the outer periphery of the elastic reset rubber ring 635. A limiting ring 636 for limiting the movement of the movable plate 633 is also fixedly mounted on the adjustment seat 631; A dustproof net 64 for dust prevention is also fixedly installed on the inner wall of the heat exchange shell 61; when the kinetic energy of the cooling fan 62 is small, the wind force is small, the movement degree of the movable plate 633 is small, and the cooling channel between the movable plate 633 and the adjustment seat 631 is also small. At this time, only a small amount of cooling wind is used to cool the cooling water inside the hot water exchange pipe 652; when the kinetic energy of the cooling fan 62 is large, the wind force increases, the movement degree of the movable plate 633 increases synchronously, and the cooling channel between the movable plate 633 and the adjustment seat 631 also increases. At this time, there is more cooling wind to cool the cooling water inside the hot water exchange pipe 652.

[0065] See also Figure 12 The ventilation hole 632 includes a first channel 6321 and a second channel 6322, and the inner diameter of the first channel 6321 is larger than the inner diameter of the second channel 6322; since the inner diameter of the first channel 6321 is larger than the inner diameter of the second channel 6322, the inner diameters of the first channel 6321 and the second channel 6322 gradually decrease. When the cooling airflow passes through the first channel 6321 and enters the second channel 6322 with a smaller inner diameter, the flow rate of the cooling airflow will increase due to the smaller cross-sectional area, thereby effectively accelerating the circulation speed of the cooling airflow and effectively improving the transmission efficiency of the cooling airflow.

[0066] See also Figures 8 to 11 The heat exchange assembly 65 includes a driving water pump 651 fixedly assembled on the inner wall of the heat exchange shell 61, one side of the driving water pump 651 is communicated with the inner cavity of the lower mold base 32 through a water pipe, and the other side of the driving water pump 651 is fixedly connected to the hot water exchange pipe 652, and the end of the hot water exchange pipe 652 away from the driving water pump 651 is communicated with the inner cavity of the lower mold base 32; wherein, the hot water exchange pipe 652 is arranged in a conical shape; by starting the driving water pump 651, the driving water pump 651 is used to transport the cooling water in the inner cavity of the lower mold base 32 to the hot water exchange pipe 652, and the hot water exchange pipe 652 is used to exchange heat with the cooling water flowing inside.

[0067] See also Figures 8 to 11 The refrigeration component 66 includes a refrigerator 661 fixedly mounted on the inner wall of the heat exchange shell 61, and the output end of the refrigerator 661 is fixedly connected to the condenser 662; wherein, the condenser 662 is arranged in a cone shape; in the process of the cooling fan 62 driving the cooling airflow to cool the hot water exchange pipe 652, the refrigerator 661 is started at the same time, and through the synergistic effect between the refrigerator 661 and the condenser 662, cooler air is generated, and the cool air is transmitted to the hot water exchange pipe 652 to realize heat exchange with the hot water exchange pipe 652. The hot water exchange pipe 652 surrounds the outer periphery of the condenser 662, so that the cool air emitted by the condenser 662 can be transmitted to the hot water exchange pipe 652 as soon as possible, thereby enhancing the heat exchange effect of the cooling water in the hot water exchange pipe 652.

[0068] See also Figures 12 to 13, the interior of the adjustment seat 631 is provided with a sensing component 67 for adjusting the output current of the refrigeration component 66, and the sensing component 67 includes a sliding rheostat 671 fixedly assembled in the adjustment seat 631, and a sensing slide 672 is slidably mounted on the sliding rheostat 671, and a fixing rod 673 is fixedly mounted on the sensing slide 672, and the upper end of the fixing rod 673 is fixedly connected to the movable sleeve 634; since the sliding rheostat 671 is electrically connected to the refrigerator 661, the sliding distance of the sensing slide 672 is inversely related to the change in resistance value. By adjusting the sliding distance of the sensing slide 672, the resistance value of the sliding rheostat 671 can be accurately controlled, thereby achieving Regulation of the current in the refrigerator 661; when the wind force driven by the cooling fan 62 is relatively small, the movable plate 633 and the movable sleeve 634 move a short distance, and the movable sleeve 634 drives the induction slide 672 to slide on the sliding rheostat 671 and the sliding stroke is also relatively short. At this time, the resistance is relatively large and the current is reduced, thereby realizing the gradual cooling and heat exchange of the hot water exchange pipe 652; when the wind force driven by the cooling fan 62 is relatively large, the movable plate 633 and the movable sleeve 634 move a long distance, and the movable sleeve 634 drives the induction slide 672 to slide on the sliding rheostat 671 and the sliding stroke is also relatively long. At this time, the resistance is relatively small and the current is increased, thereby enhancing the cooling and heat exchange effect of the hot water exchange pipe 652.

[0069] The specific usage and function of this embodiment are as follows:

[0070] Working principle: First, the hydraulic cylinder 24 is activated, and the piston rod of the hydraulic cylinder 24 is used to push the movable top plate 22 and the upper die base 31 downward. During the downward movement of the upper die base 31, the movable top plate 22 slides along the guide slide rod 23 to ensure the stability of the downward movement of the upper die base 31. As the upper die base 31 continues to move downward, the positioning column 311 on it is inserted into the positioning groove 321 on the lower die base 32, so that the upper die base 31 and the lower die base 32 are in a closed mold state;

[0071] Before the molten metal is injected into the cavity between the upper die base 31 and the lower die base 32 along the pouring gate, the heater 51 is first driven to make the heating tube 52 generate heat to preheat the cooling water in the cavity of the lower die base 32. This preheating operation can effectively reduce the temperature difference between the mold and the high-temperature molten metal, reduce thermal stress, prevent mold cracking, and extend the service life of the mold. At the same time, it improves the filling capacity of the molten metal, avoids problems such as insufficient pouring and cold shut, and can also reduce the pores and inclusions in the volute casting, improve the surface quality and density, and thus improve the product quality of the volute casting;

[0072] After preheating is completed, the pouring mechanism 40 is started and driven to inject the molten metal along the pouring gate into the cavity between the upper die base 31 and the lower die base 32 to realize the casting of the volute casting.

[0073] During the molding process of the volute casting in the cavity of the lower die seat 32, it needs to be cooled and molded. At this time, the heater 51 is stopped and the water pump 651 is started. The cooling water in the cavity of the lower die seat 32 is transported to the hot water exchange pipe 652 by the water pump 651. At the same time, the cooling fan 62 is started to transport the external cooling air flow to the heat exchange shell 61. The cooling air flow passes through the ventilation hole 632. Since the inner diameter of the first channel 6321 is larger than the inner diameter of the second channel 6322, the inner diameters of the first channel 6321 and the second channel 6322 are gradually reduced, and the cooling When the cooling air flow passes through the first channel 6321 and enters the second channel 6322 with a smaller inner diameter, the flow rate of the cooling air flow will be accelerated due to the smaller cross-sectional area, thereby effectively accelerating the circulation speed of the cooling air flow and effectively improving the transmission efficiency of the cooling air flow. Under the action of wind, the movable plate 633 is pushed, causing the movable plate 633 and the side wall of the adjustment seat 631 to separate from each other, forming an air flow channel. The cooling air flow passes through the gap between the movable plate 633 and the adjustment seat 631, and then blows to the hot water exchange pipe 652 through the air inlet hole 6331 on the movable plate 633, cooling the cooling water in the hot water exchange pipe 652.

[0074] In addition, the wind force of the cooling fan 62 can be gradually increased from small to large. When the kinetic energy of the cooling fan 62 is small, the wind force is small, the movable plate 633 moves to a small extent, and the cooling channel between the movable plate 633 and the adjustment seat 631 is also small. At this time, only a small amount of cooling wind is used to cool the cooling water inside the hot water exchange pipe 652. When the kinetic energy of the cooling fan 62 is large, the wind force is increased, the movable plate 633 moves to a larger extent, and the cooling channel between the movable plate 633 and the adjustment seat 631 is also increased. At this time, more cooling wind is used to cool the cooling water inside the hot water exchange pipe 652.

[0075] And by setting the hot water exchange pipe 652 to a conical shape that is narrow in front and wide in the back, the cooling air can cool the hot water exchange pipe 652 from front to back, thereby realizing a gradually increasing and adaptive change in the cooling speed of the cooling water in the hot water exchange pipe 652, effectively controlling the cooling rate of the cooling water in the circulation pipe, and ensuring the production quality of the volute casting; and through this setting, the cooling speed of the volute casting can be adaptively adjusted, which can effectively avoid the problem of quality defects such as deformation and air holes on the surface of the volute casting caused by the rapid cooling speed of the volute casting in the mold cavity, and ensure the product quality of the volute casting by effectively and reasonably controlling the cooling speed of the volute casting.

[0076] While the cooling fan 62 drives the cooling airflow to cool the hot water exchange pipe 652, the refrigerator 661 is started at the same time. Through the synergistic effect between the refrigerator 661 and the condenser 662, cooler air is generated and transmitted to the hot water exchange pipe 652 to achieve heat exchange with the hot water exchange pipe 652. The hot water exchange pipe 652 surrounds the outer periphery of the condenser 662, so that the cold air emitted by the condenser 662 can be transmitted to the hot water exchange pipe 652 as soon as possible, thereby enhancing the heat exchange effect of the cooling water in the hot water exchange pipe 652.

[0077] When the external cooling airflow pushes the movable plate 633 to move, the movable plate 633 drives the movable sleeve 634 to move synchronously. The movable sleeve 634 drives the sensing slide 672 to slide on the sliding rheostat 671 by using the fixed rod 673. Since the sliding rheostat 671 is electrically connected to the refrigerator 661, the sliding distance of the sensing slide 672 is inversely related to the change in resistance value. By adjusting the sliding distance of the sensing slide 672, the resistance value of the sliding rheostat 671 can be accurately controlled, thereby achieving the adjustment of the current in the refrigerator 661. When the wind force driven by the cooling fan 62 is small, the moving distance between the movable plate 633 and the movable sleeve 634 is relatively close, and the sliding stroke of the sensing slide 672 driven by the movable sleeve 634 on the sliding rheostat 671 is also relatively close. At this time, the resistance is large and the current is reduced, realizing the gradual cooling and heat exchange of the hot water exchange pipe 652; when the wind force driven by the cooling fan 62 is large, the movable plate 633 and the movable sleeve 634 move a long distance, and the movable sleeve 634 drives the induction slide 672 to slide on the sliding rheostat 671 a long distance. At this time, the resistance is small and the current is increased, thereby enhancing the cooling and heat exchange effect of the hot water exchange pipe 652; and through this setting, it is possible to avoid rapid cooling causing a large temperature gradient between the surface and the interior of the volute casting, thereby inducing thermal stress and causing deformation or cracking of the casting. By gradually cooling the casting in the mold and adjusting the cooling rate, the temperature gradient can be reduced, the thermal stress can be reduced, thereby reducing the risk of deformation and cracking of the volute casting, and improving the dimensional accuracy and shape stability of the volute casting.

[0078] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A turbocharger volute casting device, comprising a base (10), a frame (11) disposed on the base (10), and characterized in that: It also includes a hydraulic assembly (20) disposed on the base (10), a mold assembly (30) disposed on the hydraulic assembly (20), and a casting mechanism (40) disposed on the base (10) for casting the volute; The mold assembly (30) is provided with a heating assembly (50) for preheating the volute casting, and a heat exchange mechanism (60) for cooling the volute casting; The heat exchange mechanism (60) includes a heat exchange shell (61), the interior of the heat exchange shell (61) is fixedly equipped with a cooling fan (62), and the left side of the heat exchange shell (61) is provided with a heat exchange component (65) and a refrigeration component (66) for cooling the volute casting. The heat exchange component (65) includes a hot water exchange pipe (652) for cooling and heat exchange, and the refrigeration component (66) includes a condenser pipe (662) for condensation and cooling, and the hot water exchange pipe (652) is sleeved on the outer periphery of the condenser pipe (662). An adaptive component (63) is further provided between the cooling fan (62) and the heat exchange component (65). By driving the cooling fan (62), external cooling air is driven along the adaptive component (63) into the heat exchange shell (61), and the cooling air is blown onto the hot water exchange pipe (652) to gradually cool the cooling water in the pipe. The adaptive component (63) includes an adjustment seat (631) fixedly mounted on the inner wall of the heat exchange shell (61), a ventilation hole (632) being provided on the adjustment seat (631), a movable plate (633) for shielding the ventilation hole (632) being movably mounted on one side of the adjustment seat (631), an air inlet hole (6331) for ventilation being provided on the movable plate (633), a movable sleeve (634) and an elastic reset rubber ring (635) being fixedly connected on the side of the movable plate (633) facing the ventilation hole (632), and the movable sleeve (634) being located on the outer periphery of the elastic reset rubber ring (635), and a limiting ring (636) for limiting the movement of the movable plate (633) being further fixedly mounted on the adjustment seat (631).

2. A turbocharger volute casting device according to claim 1, characterized in that: The mold assembly (30) comprises an upper mold base (31) and a lower mold base (32), wherein both the upper mold base (31) and the lower mold base (32) are provided with a mold cavity for casting the volute, and an inner cavity is provided inside the lower mold base (32), and cooling water is provided in the inner cavity.

3. A turbocharger volute casting device according to claim 2, characterized in that: A positioning column (311) is fixedly mounted on the bottom of the upper die base (31), and a positioning groove (321) matching the positioning column (311) is provided on the lower die base (32).

4. The turbocharger volute casting device according to claim 2, characterized in that: The hydraulic assembly (20) includes a fixed base plate (21) fixedly mounted on the base (10), and a lower die base (32) fixedly mounted on the fixed base plate (21), a guide slide (23) fixedly mounted on the fixed base plate (21), a movable top plate (22) slidably mounted on the guide slide (23), and an upper die base (31) fixedly mounted on the movable top plate (22), and a hydraulic cylinder (24) fixedly mounted on the upper side of the frame (11), and the bottom of the hydraulic cylinder (24) is fixedly connected to the movable top plate (22) by a piston rod passing through the frame (11).

5. The turbocharger volute casting device according to claim 1, characterized in that: The heating assembly (50) comprises a heater (51) fixedly mounted on the outer wall of the lower mold base (32), and a heating tube (52) mounted in the inner cavity of the lower mold base (32), with one end of the heating tube (52) fixedly connected to the heater (51).

6. The turbocharger volute casting device according to claim 1, characterized in that: A dustproof net (64) for preventing dust is also fixedly mounted on the inner wall of the heat exchange shell (61).

7. The turbocharger volute casting device according to claim 1, characterized in that: The ventilation hole (632) comprises a first hole channel (6321) and a second hole channel (6322), and the inner diameter of the first hole channel (6321) is larger than the inner diameter of the second hole channel (6322).

8. The turbocharger volute casting device according to claim 2, characterized in that: The heat exchange assembly (65) includes a driving water pump (651) fixedly mounted on the inner wall of the heat exchange shell (61), one side of the driving water pump (651) is communicated with the inner cavity of the lower mold base (32) through a water pipe, and the other side of the driving water pump (651) is fixedly connected to a heat exchange water pipe (652), and one end of the heat exchange water pipe (652) away from the driving water pump (651) is communicated with the inner cavity of the lower mold base (32); Wherein, the heat exchange water pipe (652) is arranged in a conical shape.

9. The turbocharger volute casting device according to claim 1, characterized in that: The refrigeration assembly (66) includes a refrigerator (661) fixedly mounted on the inner wall of the heat exchange shell (61), and the output end of the refrigerator (661) is fixedly connected to the condenser pipe (662); Wherein, the condenser (662) is arranged in a cone shape.

10. The turbocharger volute casting device according to claim 1, characterized in that: The adjusting seat (631) is provided with an induction assembly (67) for adjusting the output current of the refrigeration assembly (66). The induction assembly (67) includes a sliding rheostat (671) fixedly assembled in the adjusting seat (631). An induction slide (672) is slidably mounted on the sliding rheostat (671). A fixing rod (673) is fixedly mounted on the induction slide (672). The upper end of the fixing rod (673) is fixedly connected to the movable sleeve (634).

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