A casting device for automobile water pump housing with synchronous cooling function

Abstract

The present invention relates to the technical field of water pump housing casting, and specifically to a car water pump housing casting device with a synchronous cooling function. The casting device includes a mold and a rotating base. After the casting liquid is injected, the mold is installed in the rotating base and rotated, and the rotation axis is along the vertical direction. There are two types of rotation of the mold in the rotating base: self-rotation around a vertical axis and revolution around the axis of the rotating base. After the metal liquid for molding is injected, the assembled mold is placed in the rotating base, and is driven to rotate along the vertical axis within a limited range. The metal liquid no longer flows to fill the cavity only by its own weight. The centrifugal effect of the movement enhances the fluidity. The metal liquid in the mold is subjected to the centrifugal force and can fully squeeze out the air in the casting cavity. The metal liquid can fully fill the cavity to prevent local defects in the casting process.

Description

Technical Field

[0001] The invention relates to the technical field of water pump housing casting, in particular to an automobile water pump housing casting device with a synchronous cooling function. Background Art

[0002] The automobile water pump is used for cooling water circulation inside the car. Whether its performance is stable is related to whether the engine runs smoothly. The automobile water pump has a medium flow rate and a low head, but the temperature difference between hot and cold environments sometimes varies greatly. The water pump housing is cast and unqualified casting may have defects such as internal shrinkage holes, which may cause crack growth during hot and cold expansion and contraction.

[0003] During the casting process of the water pump housing, the flow gap during casting is filled only by the gravity pressure of the surplus molten metal in the pouring head. The local corners of the cavity used for molding may not be filled in place, causing defects. In addition, the traditional casting process only controls the local temperature by changing the cooling water flow rate. The molten metal does not migrate, and the cooling process often has uneven cooling speeds. The molten metal shrinks during the cooling process. Therefore, shrinkage defects often occur and can only be removed through subsequent flaw detection and processing. The casting quality cannot be further improved. Summary of the invention

[0004] The object of the present invention is to provide a casting device for an automobile water pump housing with a synchronous cooling function to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The invention discloses a casting device for automobile water pump housing with synchronous cooling function. The casting device comprises a mold and a rotating base. After the casting liquid is injected into the mold, the mold is installed in the rotating base and rotated, and the rotating axis is along the vertical direction.

[0007] The assembled mold is placed in a rotating base after the molten metal used for molding is injected. It is driven to rotate along the vertical axis within a limited range. The molten metal no longer flows to fill the cavity only by its own weight. The centrifugal effect of the movement enhances the fluidity. The molten metal in the mold is subjected to the centrifugal force and can fully squeeze out the air in the casting cavity. The molten metal can fully fill the cavity to prevent local defects in the casting process.

[0008] The mold includes a base, a lower mold cavity, a lower mold body, a casting port, an upper mold body, an upper mold cavity, a casting cylinder, and an upper cover plate. The base, the lower mold cavity, the upper mold cavity, and the upper cover plate are stacked in sequence from bottom to top. A lower mold body and an upper mold body are also arranged between the lower mold cavity and the upper mold cavity. A casting-shaped cavity is arranged between the lower mold body and the upper mold body. The casting port is arranged between the lower mold cavity and the upper mold cavity and is located beside the lower mold body. The casting cylinder is arranged downward from the upper cover plate, and the casting cylinder passes through the upper mold cavity and is inserted into the casting port.

[0009] The lower mold cavity, the lower mold body, the upper mold body, the upper mold cavity and the upper cover plate are respectively provided with interconnected cooling channels, and a cooling water circulation pump group is arranged outside the base, and the cooling water circulation pump group circulates the cooling water flowing in each cooling channel;

[0010] The casting device also includes a bottom plate, a ball rolling groove is arranged at the bottom of the rotating base, the bottom plate is rotatably mounted on the ball rolling groove through the ball rolling, and the base is fixed to the bottom plate during the casting cooling period.

[0011] Multiple modules are stacked in sequence in the mold, and a cavity for casting the workpiece is constructed in the middle. During casting, molten metal is first injected through the casting barrel, and then enters the cavity after passing through the casting port. A portion of the molten metal is accumulated in the casting barrel to fill the casting gap. The molten metal accumulated in the casting barrel needs to be higher than the highest point of the workpiece. The upper mold body and the lower mold body can be replaced according to the shape of the cast workpiece, and the other parts are not replaced to increase the versatility of the whole machine. The cooling channels inside the upper and lower mold cavities, upper and lower mold bodies, and upper cover plates are used for synchronous cooling of the workpiece during the cooling and shaping process. The design of the channels is equal to the shortest distance between the upper and lower mold bodies and the workpiece, and the corner position reduces the setting of the channels.

[0012] There are two types of rotation of the mold in the rotating base: rotation around a vertical axis and revolution around the axis of the rotating base.

[0013] When the mold rotates, the semi-free metal liquid inside can move due to the centrifugal force. If it is just a single rotation around its own axis, then all positions will only have a small difference due to the distance from the rotation center, and they all tend to be close to the maximum radial position. For the nearly circular shape of the water pump housing, the difference in centrifugal force is smaller, and the centrifugal force at all positions remains unchanged. After adding the second rotational motion, the centrifugal force of the metal liquid at different positions can fluctuate. The centrifugal force at the outermost position of the line connecting the two rotation centers is the superposition of the centrifugal effects of the two rotational motions, and the centrifugal force is the largest. It is named as the distal point in the subsequent description process, and the centrifugal force at the outermost position of the line connecting the two rotation centers is the superposition of the centrifugal effects of the two rotational motions. The centrifugal force at the innermost position of the line is the subtraction of the centrifugal effects of the two rotational motions. The resultant force here is the smallest and is named as the pericenter in the subsequent description. The direction of the force is determined according to the size of the two centrifugal forces, whether it is toward the center of revolution or away from the center of revolution. Under the force system composed of the two rotational motions, the centrifugal force on the molten metal at all positions fluctuates with time. At every moment, the molten metal tends to flow from the pericenter to the pericenter. Therefore, the molten metal with fluctuating centrifugal force can migrate horizontally in the liquid state to prevent local supercooling and too fast solidification and local overheating without solidification. The traditional casting process only controls the local temperature by changing the cooling water flow rate, and the molten metal does not migrate.

[0014] The pouring gate pouring channel enters from the side of the lower mold body.

[0015] The molten metal entering the cavity from the side is also subject to the centrifugal action of the two rotational motions at the entry position, and is in a horizontal position at the same height as the workpiece. Therefore, it can also flow and migrate when subjected to centrifugal action. The molten metal at the specific point where the cavity enters is subjected to the centrifugal action of the fluctuations, which continuously squeezes and loosens the molten metal in the cavity, similar to breathing, allowing the molten metal in the casting tube to be well replenished during the cooling and shrinkage process.

[0016] The casting device also includes a mold rod, a gear ring, a main motor, and a revolving lever. The mold rod is vertically arranged, the lower end of the mold rod is fixed to the upper cover plate, a gear is arranged in the middle position of the mold rod, a support platform is arranged in the middle position of the rotating base, the gear ring is arranged on the support platform, the axis of the gear ring is vertical and coincides with the vertical axis of the rotating base, the main motor is installed on the upper part of the rotating base, the output shaft of the main motor is downward and fixes the revolving lever, the revolving lever is radially provided with a rotating arm outwardly and a sleeve is arranged at the end of the rotating arm to cover the upper end of the mold rod, and the gear structure in the middle position of the mold rod is meshed with the inner ring of the gear ring.

[0017] The main motor rotates, the revolution lever rotates, the end of the revolution lever arm pulls the mold rod to revolve, the middle gear of the mold rod is also meshed with the gear ring, the revolution also has an angular velocity of rotation, and all parts of the molten metal are subject to the combined force of these two forces.

[0018] The vertical axis of the mold rod passes through the center of the outer envelope circle of the projection contour of the cavity between the upper mold body and the lower mold body on the horizontal plane.

[0019] The rotation axis of the mold as a whole does not necessarily use the center point of the outer dimensions. It should be selected based on the projection size of the cavity on the horizontal plane. The center of the outer envelope circle is used as the rotation center, and the centrifugal force fluctuation amplitude is easy to calculate. It should be noted that in order to reduce the uneven force on the revolution lever, the mold as a whole should be re-balanced for dynamic balancing to reduce the uneven rotation force.

[0020] The gear ring is rotatably mounted on the support platform, the gear ring rotation axis coincides with the main motor output shaft axis, and the gear ring has a rotation drive.

[0021] The ring gear applies a rotational angular velocity, which can be used to change the mold's rotational angular velocity at a fixed orbital angular velocity, adjust the size relationship between the two, and adjust the centrifugal force ratio to adjust the magnitude of the metal liquid's force fluctuation.

[0022] The casting device also includes an auxiliary motor and an auxiliary gear. The outer ring of the gear ring is a step surface. The side with a smaller radius in the step surface of the outer ring of the gear ring is rotatably installed with the support platform. The outer surface of the side with a larger radius in the outer ring of the gear ring is provided with teeth. The auxiliary motor is installed on the upper part of the rotating base. The output shaft of the auxiliary motor faces downward and a auxiliary gear is provided at the end. The auxiliary gear is meshed with the outer ring of the gear ring.

[0023] The auxiliary motor and the auxiliary gear are used to control the rotation speed of the ring gear to adjust the relationship between the mold's orbital angular velocity and rotational angular velocity.

[0024] The ratio of the mold's revolution angular velocity to its rotation angular velocity gradually decreases during the cooling process of the workpiece in the mold.

[0025] The orbital speed is large and the rotation speed is small. A larger ratio will cause the centrifugal force of the molten metal at different positions to fluctuate greatly. This is suitable for the early flow of the cooling process, increasing the exchange of molten metal between various positions, and reducing the migration power in the later stage of solidification, allowing the molten metal to solidify under relatively stable conditions.

[0026] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention applies rotational motion to the mold during the cooling process, so that two centrifugal forces are jointly applied to the metal liquid micro-clusters. The metal liquid at different positions is subjected to different resultant forces, the forces fluctuate, and have a tendency to migrate in the horizontal direction, thereby increasing the temperature uniformity of each area during the cooling process. The gear ring can rotate and adjust the angular velocity ratio of the mold's revolution and rotation in real time to adapt to the force conditions of the micro-clusters at different cooling time points. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the rotational drive structure of the mold of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the rotating base of the present invention and the position of the motor installed thereon;

[0031] Figure 4 It is an exploded schematic diagram of the mold of the present invention;

[0032] Figure 5 It is a schematic diagram for analyzing the force conditions of the workpiece movement in the mold of the present invention;

[0033] In the figure: 1. mold; 11. base; 12. lower mold cavity; 13. lower mold body; 14. casting port; 15. upper mold body; 16; upper mold cavity; 17. casting cylinder; 18; upper cover plate; 19. cooling channel;

[0034] 2. Rotating base; 21. Ball groove; 22. Support platform; 3. Bottom plate; 41. Mold rod; 42. Gear ring; 43. Main motor; 44. Revolution lever; 45. Auxiliary motor; 46. Auxiliary gear; 9. Workpiece. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] A casting device for an automobile water pump housing with a synchronous cooling function comprises a mold 1 and a rotating base 2. After the mold 1 is injected with casting liquid, it is installed in the rotating base 2 and rotated, and the rotating axis is along the vertical direction.

[0037] like Figure 1As shown, the assembled mold 1 is placed in the rotating base 2 after the molten metal for molding is injected. It is driven to rotate along the vertical axis within a limited range. The molten metal no longer flows to fill the cavity only by its own weight. The centrifugal effect of the movement enhances the fluidity. The molten metal in the mold 1 is subjected to the centrifugal force and can fully squeeze out the air in the casting cavity. The molten metal can fully fill the cavity to prevent local defects in the casting process.

[0038] The mold 1 includes a base 11, a lower mold cavity 12, a lower mold body 13, a casting port 14, an upper mold body 15, an upper mold cavity 16, a casting cylinder 17, and an upper cover plate 18. The base 11, the lower mold cavity 12, the upper mold cavity 16, and the upper cover plate 18 are stacked in sequence from bottom to top. The lower mold body 13 and the upper mold body 15 are also hidden between the lower mold cavity 12 and the upper mold cavity 16. A casting-shaped cavity is arranged between the lower mold body 13 and the upper mold body 15. The casting port 14 is arranged between the lower mold cavity 12 and the upper mold cavity 16 and is located beside the lower mold body 13. The casting cylinder 17 is arranged downward from the upper cover plate 18, and the casting cylinder 17 passes through the upper mold cavity 16 and is inserted into the casting port 14;

[0039] The lower mold cavity 12, the lower mold body 13, the upper mold body 15, the upper mold cavity 16, and the upper cover plate 18 are respectively provided with connected cooling channels 19, and a cooling water circulation pump group is arranged outside the base 11, and the cooling water circulation pump group circulates the cooling water flowing in each cooling channel 19;

[0040] The casting device also includes a bottom plate 3. A ball rolling groove 21 is arranged at the bottom of the rotating base 2. The bottom plate 3 is rotatably mounted on the ball rolling groove 21 by rolling balls. The base 11 is fixed to the bottom plate 3 during the casting cooling period.

[0041] like Figure 1 , 2 As shown in Figures 4 and 5, multiple modules are stacked in sequence in the mold 1, and a cavity for casting the workpiece 9 is constructed in the middle. During casting, molten metal is first injected through the casting tube 17, and then enters the cavity after passing through the casting port 14. A portion of the molten metal is accumulated in the casting tube 17 to fill the casting gap. The molten metal accumulated in the casting tube needs to be higher than the highest point of the workpiece 9. The upper mold body 15 and the lower mold body 13 can be replaced according to the shape of the cast workpiece, and the other parts are not replaced, thereby increasing the versatility of the whole machine. The cooling channels 19 inside the upper and lower mold cavities, the upper and lower mold bodies, and the upper cover plate 18 are used for synchronous cooling of the workpiece during the cooling and shaping process. The design of the channels is equal to the shortest distance between the upper and lower mold bodies and the workpiece 9, and the corner position reduces the setting of the channels.

[0042] There are two types of rotation of the mold 1 in the rotating base 2: rotation around a vertical axis and revolution around the axis of the rotating base 2.

[0043] like Figure 1 , 2As shown in Figures 5 and 6, when the mold 1 rotates, the semi-free metal liquid inside can move due to the centrifugal force. If it is just a single rotation around its own axis, then all positions will only have a small difference due to the distance from the rotation center, and they all tend to be close to the maximum radial position. For a nearly circular shape such as a water pump housing, the difference in centrifugal force is smaller, and the centrifugal force at all positions remains unchanged. After adding a second rotational motion, the centrifugal force of the metal liquid at different positions can fluctuate. The centrifugal force at the outermost position of the line connecting the two rotation centers is the superposition of the centrifugal effects of the two rotational motions, and the centrifugal force is the largest. It is named as the distal point in the subsequent description, and the centrifugal force at the outermost position of the line connecting the two rotation centers is the superposition of the centrifugal effects of the two rotational motions. The centrifugal force at the innermost position of the line of rotation is the subtraction of the centrifugal effects of the two rotational motions. The resultant force here is the smallest and is named as the pericenter in the subsequent description. The direction of the force is determined according to the size of the two centrifugal forces, whether it is toward the center of revolution or away from the center of revolution. Under the force system composed of the two rotational motions, the centrifugal force on the molten metal at all positions fluctuates with time. At every moment, the molten metal tends to flow from the pericenter to the pericenter. Therefore, the molten metal with fluctuating centrifugal force can migrate horizontally in the liquid state to prevent local supercooling and too fast solidification and local overheating without solidification. The traditional casting process only controls the local temperature by changing the cooling water flow rate, and the molten metal does not migrate.

[0044] The pouring channel of the pouring port 14 enters from the side of the lower mold body 13 .

[0045] The molten metal entering the cavity from the side is also subjected to the centrifugal effect of the two rotational motions at the entry position, and is in a horizontal position at the same height as the workpiece. Therefore, it can also flow and migrate when subjected to the centrifugal effect. The molten metal at the specific point of the cavity entry position is subjected to the fluctuating centrifugal effect, which continuously squeezes and loosens the molten metal in the cavity, similar to breathing, so that the molten metal in the casting tube 17 can be well replenished during the cooling and shrinkage process.

[0046] The casting device also includes a mold rod 41, a ring gear 42, a main motor 43, and a revolving lever 44. The mold rod 41 is vertically arranged, and the lower end of the mold rod 41 is fixed to the upper cover plate 18. A gear is arranged in the middle position of the mold rod 41, and a support platform 22 is arranged in the middle position of the rotating base 2. The ring gear 42 is arranged on the support platform 22. The axis of the ring gear 42 is vertical and coincides with the vertical axis of the rotating base 2. The main motor 43 is installed on the upper part of the rotating base 2, and the output shaft of the main motor 43 is downward and fixed to the revolving lever 44. The revolving lever 44 is radially provided with a rotating arm outward and a sleeve is arranged at the end of the rotating arm to cover the upper end of the mold rod 41. The gear structure in the middle position of the mold rod 41 is meshed with the inner ring of the ring gear 42.

[0047] like Figure 1 , 2As shown in FIG. 5 , the main motor 43 rotates, and the revolution lever 44 rotates at an angular velocity w1. The revolution angular velocity of the mold rod 41 pulled by the end of the revolution arm of the revolution lever 44 is w1. The middle gear of the mold rod 41 is also meshed with the ring gear 42. The revolution also has an angular velocity w2 of rotation. The angular velocity w1 generates a centrifugal force F1, and the angular velocity w2 generates a centrifugal force F2. All parts of the molten metal are subject to the combined force of these two forces.

[0048] The vertical axis of the mold rod 41 passes through the center of the outer envelope circle of the projection contour of the mold cavity between the upper mold body 15 and the lower mold body 13 on the horizontal plane.

[0049] The rotation axis of the mold 1 as a whole does not necessarily use the center point of the outer dimensions. It should be selected based on the projection size of the cavity on the horizontal plane. The center of the outer envelope circle is used as the rotation center, and the centrifugal force fluctuation amplitude is easy to calculate. It should be noted that in order to reduce the uneven force on the revolution lever 44, the mold 1 as a whole should preferably be re-weighted for dynamic balancing to reduce the uneven rotation force.

[0050] The gear ring 42 is rotatably mounted on the support platform 22 , and the rotation axis of the gear ring 42 coincides with the output axis of the main motor 43 , so that the gear ring 42 has a rotation drive.

[0051] like Figure 2 , 5 As shown, the gear ring 42 applies a rotational angular velocity w3, which can be used to change the rotational angular velocity w2 of the mold 1 under a fixed angular velocity w1, thereby adjusting the size relationship between w1 and w2, and adjusting the centrifugal force ratio to adjust the magnitude of the force fluctuation of the molten metal.

[0052] The casting device also includes an auxiliary motor 45 and a auxiliary gear 46. The outer ring of the gear ring 42 is a stepped surface. The side with a smaller radius in the stepped surface of the outer ring of the gear ring 42 is rotatably mounted with the support platform 22. The outer surface of the side with a larger radius in the outer ring of the gear ring 42 is provided with teeth. The auxiliary motor 45 is installed on the upper part of the rotating base 2. The output shaft of the auxiliary motor 45 faces downward and a auxiliary gear 46 is provided at the end. The auxiliary gear 46 is meshed with the outer ring of the gear ring 42.

[0053] like Figure 2 , 3 As shown, the auxiliary motor 45 and the auxiliary gear 46 are used to control the rotation speed w3 of the ring gear 42 to adjust the magnitude relationship between the revolution angular velocity w1 and the rotation angular velocity w2 of the mold 1 .

[0054] The ratio of the revolution angular velocity of the mold 1 to the rotation angular velocity gradually decreases during the cooling process of the workpiece 9 in the mold 1.

[0055] The revolution speed w1 is large and the rotation speed w2 is small. A larger ratio will cause the centrifugal force of the molten metal at different positions to fluctuate greatly. This is suitable for the early flow of the cooling process, increasing the exchange of molten metal between various positions, and reducing the migration power in the later stage of solidification, allowing the molten metal to solidify under relatively stable conditions.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A casting device for automobile water pump housing with synchronous cooling function, characterized in that: The casting device comprises a mold (1) and a rotating base (2); the mold (1) is placed in the rotating base (2) after the casting liquid is injected and rotated, with the rotation axis being along the vertical direction; The mold (1) comprises a base (11), a lower mold cavity (12), a lower mold body (13), a casting port (14), an upper mold body (15), an upper mold cavity (16), a casting cylinder (17), and an upper cover plate (18); the base (11), the lower mold cavity (12), the upper mold cavity (16), and the upper cover plate (18) are stacked in sequence from bottom to top; a lower mold body (13) and an upper mold body (15) are also disposed between the lower mold cavity (12) and the upper mold cavity (16); a mold cavity of a casting shape is disposed between the lower mold body (13) and the upper mold body (15); the casting port (14) is disposed between the lower mold cavity (12) and the upper mold cavity (16) and is located beside the lower mold body (13); the casting cylinder (17) is disposed downward from the upper cover plate (18); the casting cylinder (17) passes through the upper mold cavity (16) and is inserted into the casting port (14); The lower mold cavity (12), the lower mold body (13), the upper mold body (15), the upper mold cavity (16), and the upper cover plate (18) are respectively provided with interconnected cooling channels (19); a cooling water circulation pump group is provided outside the base (11), and the cooling water circulation pump group circulates cooling water flowing in each cooling channel (19); The casting device further comprises a bottom plate (3), a ball rolling groove (21) is arranged at the bottom of the rotating base (2), the bottom plate (3) is rotatably mounted on the ball rolling groove (21) by means of a ball rolling, and the base (11) is fixed to the bottom plate (3) during the casting cooling period; The mold (1) has two rotations in the rotating base (2): rotation about a vertical axis and revolution about the axis of the rotating base (2); The casting channel of the casting port (14) enters from the side of the lower mold body (13); The casting device further comprises a mold rod (41), a gear ring (42), a main motor (43), and a revolving lever (44). The mold rod (41) is arranged vertically, the lower end of the mold rod (41) is fixed to the upper cover plate (18), a gear is arranged in the middle of the mold rod (41), a support platform (22) is arranged in the middle of the rotating base (2), the gear ring (42) is arranged on the support platform (22), the axis of the gear ring (42) is vertical and coincides with the vertical axis of the rotating base (2), the main motor (43) is installed on the upper part of the rotating base (2), the output shaft of the main motor (43) is downward and fixed to the revolving lever (44), the revolving lever (44) is provided with a rotating arm radially outwardly, and a sleeve is provided at the end of the rotating arm to cover the upper end of the mold rod (41), and the gear structure in the middle of the mold rod (41) is meshed with the inner ring of the gear ring (42).

2. The casting device for automobile water pump housing with synchronous cooling function according to claim 1, characterized in that: The vertical axis on which the mold rod (41) is located passes through the center of the outer envelope circle of the projection contour of the mold cavity between the upper mold body (15) and the lower mold body (13) on the horizontal plane.

3. The casting device for automobile water pump housing with synchronous cooling function according to claim 1, characterized in that: The gear ring (42) is rotatably mounted on the support platform (22), the rotation axis of the gear ring (42) coincides with the axis of the output shaft of the main motor (43), and the gear ring (42) has a rotation drive.

4. The casting device for automobile water pump housing with synchronous cooling function according to claim 3 is characterized in that: The casting device further comprises an auxiliary motor (45) and an auxiliary gear (46); the outer ring of the gear ring (42) is a stepped surface; the side with a smaller radius of the stepped surface of the outer ring of the gear ring (42) is rotatably mounted on the support platform (22); the outer surface of the side with a larger radius of the outer ring of the gear ring (42) is provided with teeth; the auxiliary motor (45) is mounted on the upper part of the rotating base (2); the output shaft of the auxiliary motor (45) faces downward and an auxiliary gear (46) is provided at the end; the auxiliary gear (46) is meshed with the outer ring of the gear ring (42).

5. The casting device for automobile water pump housing with synchronous cooling function according to claim 3, characterized in that: The ratio of the orbital angular velocity of the mold (1) to the rotational angular velocity gradually decreases during the cooling process of the workpiece (9) in the mold (1).

Images