A structure of conformal cooling water channel of a water meter shell low pressure casting mold

Abstract

The present application belongs to the technical field of water meter shell die casting processing, and particularly discloses a conformal cooling water channel structure of a water meter shell low-pressure casting die, which comprises a first side die, one side of the first side die is provided with a second side die, the other side of the first side die is provided with a guide mechanism, a first die cavity is formed in the middle of one side of the first side die, a second die cavity is formed in the middle of one side of the second side die, and a liquid distribution feeding mechanism is connected to the upper ends of the first side die and the second side die. Through the synergistic effect of the liquid distribution feeding mechanism, the feeding cooling mechanism and the die cooling mechanism, the overall uniform cooling of the die is realized to avoid the adhesion of the metal liquid caused by the excessively high temperature at the feeding port, while ensuring the uniform distribution of the high-toughness aluminum alloy liquid to fill the die cavity, thereby finally improving the quality, production safety and efficiency of the water meter shell casting.

Description

Technical Field

[0001] This invention belongs to the field of water meter casing die casting processing, and specifically discloses a conformal cooling water channel structure for a low-pressure casting mold of a water meter casing. Background Technology

[0002] High-strength, lightweight die-cast aluminum alloys possess high tensile strength, low density, and good casting fluidity, making them ideal materials for manufacturing precision structural components such as water meter casings. Currently, water meter casings are mostly produced using low-pressure casting processes with side-mold structures. Because a hollow cavity needs to be reserved inside the casing to accommodate the movement components, a soluble core needs to be pre-set in the mold cavity during die casting. During production, pressurized high-strength, high-toughness aluminum alloy liquid enters the mold cavity through the inlet and encapsulates the soluble core. After the molten metal solidifies, the soluble core is dissolved and removed, ultimately forming a hollow casing.

[0003] In the actual low-pressure casting process, molten aluminum alloy enters the mold cavity through the feed port. The feed port area is constantly subjected to the high temperature of the molten metal, becoming the core high-temperature zone of the mold. Existing molds generally lack targeted cooling structures at the feed port, which causes the high-strength and tough aluminum alloy molten metal in this area to solidify slowly and remain in a softened state, making it easy to stick to the inner wall of the mold cavity. This problem not only requires external force to be applied to the casing during demolding, causing deformation or micro-cracks in the thin-walled area of ​​the casing due to uneven stress, but also increases the operational risks for workers to handle parts due to the continuous high temperature at the feed port, seriously restricting the production qualification rate and efficiency of water meter casings. Summary of the Invention

[0004] In view of this, the technical problem to be solved by the present invention is to propose a conformal cooling water channel structure for a low-pressure casting mold for water meter housing, so as to solve the problems of adhesion and uneven cooling at the feed inlet of the low-pressure casting mold for water meter housing in the prior art.

[0005] To achieve the above objectives, the present invention provides a conformal cooling water channel structure for a low-pressure casting mold for a water meter casing, comprising a first side mold, a second side mold disposed on one side of the first side mold, and a guide mechanism disposed on the other side of the first side mold. The guide mechanism is used to improve the stability of the first side mold and the second side mold during movement. A first mold cavity is formed in the middle of one side of the first side mold, and a second mold cavity is formed in the middle of one side of the second side mold. A feed inlet is formed on one side of the upper end of the first side mold and one side of the upper end of the second side mold, and the two feed inlets form an arc-shaped structure. A liquid distribution feed mechanism is connected to the upper end of the first side mold and the upper end of the second side mold.

[0006] The liquid distribution and feeding mechanism is used to evenly distribute and smoothly transport high-strength and tough aluminum alloy liquid to the inside of the mold inlet. The liquid distribution and feeding mechanism includes mounting flange rings, which are semi-arc-shaped. One of the mounting flange rings is connected to a first guide ring at its upper end, and the other mounting flange ring is connected to a second guide ring at its upper end. The first guide ring and the second guide ring are symmetrically arranged. Cooling chambers are opened on the inner walls of the first guide ring and the second guide ring. A feeding cooling mechanism is connected inside the two cooling chambers.

[0007] Both the first side mold and the second side mold are connected to a mold cooling mechanism on the lower part of one side. The mold cooling mechanism is used to cool the first side mold and the second side mold.

[0008] Preferably, the guiding mechanism includes a first mounting plate, one side of which is connected to one side of the first side mold. A second mounting plate is provided on the side of the second side mold away from the first side mold. The first mounting plate is provided with guide seats at the middle of both sides of the first side mold. The second mounting plate is provided with guide rods on one side of each of the two guide seats. Guide grooves are provided on one side of each of the two guide seats corresponding to the two guide rods. The two guide rods are respectively located inside the two guide grooves.

[0009] Preferably, the upper end of the inner wall of the first guide ring and the upper part of the inner wall of the second guide ring are both chamfered. The lower ends of the first guide ring and the second guide ring are connected to mounting rings. The lower ends of the two mounting rings are respectively connected to the upper ends of the two mounting flange rings. The upper ends of the two mounting rings are respectively connected to the two mounting flange rings by mounting bolts.

[0010] Preferably, a first support plate is connected to the upper part of one side of the inner wall of the first guide ring, a first liquid guide block is connected to the upper end of the first support plate, a second support plate is connected to one side of the first support plate, the outer wall of the second support plate is connected to the upper part of the inner wall of the second guide ring, a second liquid guide block is connected to one side of the first liquid guide block, the lower end of the second liquid guide block is connected to the upper end of the second support plate, one side of the first liquid guide block and the second liquid guide block are both inclined, and the outer walls of the first support plate and the second support plate are both circumferentially provided with liquid outlets.

[0011] Preferably, both the lower ends of the first tray and the second tray are connected to a locking block, the locking block being L-shaped. A soluble mold core is connected to the lower ends of the first tray and the second tray, and a retaining ring is connected to the upper part of the outer wall of the soluble mold core. The multiple locking blocks are respectively locked to the outer wall of the retaining ring.

[0012] Preferably, the feeding cooling mechanism includes a first arc-shaped tube located at the lower part of the inner wall of the cooling chamber. The lower middle part of the first arc-shaped tube is connected to the upper end of the liquid delivery tube. Cooling tubes are connected to both sides of the upper end of the first arc-shaped tube. A second arc-shaped tube is connected to the upper end of the plurality of cooling tubes. The second arc-shaped tube is located at the upper end of the inner wall of the cooling chamber. A drain pipe is connected to the middle part of one side of the second arc-shaped tube. The first guide ring and the second guide ring are respectively provided with two drain pipes. The two drain pipes are respectively located inside the two drain pipes. The lower ends of the two drain pipes are respectively connected to one side of the upper end of the first side mold and one side of the upper end of the second side mold.

[0013] Preferably, the mold cooling mechanism includes two sets of liquid inlet pipes. One end of each of the two liquid inlet pipes is connected to the lower part of one side of the first side mold and the lower part of one side of the second side mold, respectively. The liquid inlet pipes are arranged in an inverted L-shape. One end of each liquid inlet pipe is connected to a circulation pipe, and one end of each circulation pipe is connected to a delivery pipe. The shape of the middle part of one side of each circulation pipe is arc-shaped, and the shapes of the middle parts of one side of each of the two circulation pipes are respectively adapted to the shapes of the first mold cavity and the second mold cavity.

[0014] Preferably, the upper end of one of the infusion tubes passes through the first side mold, one mounting flange ring and the first guide ring in sequence and extends into the corresponding cooling cavity, and the upper end of the other infusion tube passes through the second side mold, another mounting flange ring and the second guide ring in sequence and extends into the corresponding cooling cavity. The first side mold and the second side mold are respectively provided with mounting cavities at the two circulation pipes, and the two circulation pipes are respectively located inside the two mounting cavities.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The conformal circulation pipes in the mold cooling mechanism, which are adapted to the shapes of the first and second mold cavities, can quickly absorb heat from the main body area of ​​the casting by conforming to the cavity contour, promoting the directional solidification of the casting from the periphery of the cavity to the center. The feeding cooling mechanism, through the three-dimensional layout of the first arc-shaped pipe, the cooling pipe and the second arc-shaped pipe, performs targeted cooling on the guide ring and the periphery of the feeding port. The two work together to achieve the dual effect of temperature control of the main body of the cavity and precise cooling of the feeding port, effectively avoiding the softening and adhesion of high-temperature, high-strength and tough aluminum alloy liquid to the inner wall of the mold cavity at the feeding port, thereby reducing defects such as thin-wall deformation and cracks of the casing caused by pulling during demolding, and ensuring the shape accuracy and structural integrity of the water meter casing.

[0017] The symmetrically arranged first and second guide rings form a stable feeding channel, guiding the pressurized molten metal to enter smoothly. The inclined first and second guide blocks divert the concentrated molten metal flow into multiple branches, which are then evenly transported to the feed port through the circumferentially opened lower liquid outlets of the first and second support plates. Throughout the process, the high-strength and tough aluminum alloy molten metal is ensured to fill the mold cavity without deviation or impact. This uniform liquid distribution not only ensures the molding accuracy of the thin-walled area of ​​the casing, but also allows the molten metal to smoothly wrap around the soluble mold core, preventing the dimensional deviation of the hollow cavity caused by the displacement of the soluble mold core.

[0018] The soluble mold core is precisely engaged with the L-shaped locking blocks at the lower ends of the first and second support plates via the outer wall retaining ring, achieving centered suspension positioning of the soluble mold core within the mold cavity. This avoids asymmetry and uneven wall thickness of the hollow cavity of the watch case caused by the offset of the soluble mold core during mold closing or molten metal filling, ensuring uniform dimensions of the hollow structure of the water meter watch case in mass production, adapting to the installation accuracy of subsequent movement components, and reducing the scrap rate of watch cases due to structural deviations. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the contact structure between the first side mold and the second side mold of the present invention;

[0020] Figure 2 This is a schematic diagram of the separation structure of the first side mold and the second side mold of the present invention;

[0021] Figure 3 This is a schematic diagram of the opening structure of the first mold cavity of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure of the circulation tube, the first side mold, and the second side mold of the present invention;

[0023] Figure 5 This is a schematic diagram of the cooling cavity structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the opening structure of the liquid outlet of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection structure between the circulation tube and the mounting cavity of the present invention;

[0026] Figure 8 This is a schematic diagram of the connection structure between the circulation pipe and the first arc-shaped pipe of the present invention.

[0027] In the diagram: 1. First side mold; 2. First mounting plate; 3. Second side mold; 4. Second mounting plate; 5. First mold cavity; 6. Second mold cavity; 7. Guide seat; 8. Guide rod; 9. Inlet; 10. Mounting flange ring; 11. First guide ring; 12. Second guide ring; 13. Mounting ring; 14. Mounting bolt; 15. First support plate; 16. Second support plate; 17. First liquid guide block; 18. Second liquid guide block; 19. Liquid outlet; 20. Clamping block; 21. Soluble mold core; 22. Clamping ring; 23. Cooling cavity; 24. First arc-shaped tube; 25. Cooling tube; 26. Second arc-shaped tube; 27. Drain pipe; 28. Inlet pipe; 29. ​​Circulation pipe; 30. Mounting cavity; 31. Infusion pipe. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0030] like Figures 1-8 The diagram illustrates a conformal cooling channel structure for a low-pressure casting mold of a water meter casing. It includes a first side mold 1, a second side mold 3 on one side of the first side mold 1, and a guide mechanism on the other side of the first side mold 1. The guide mechanism improves the stability of the first side mold 1 and the second side mold 3 during movement. A first mold cavity 5 is formed in the middle of one side of the first side mold 1, and a second mold cavity 6 is formed in the middle of one side of the second side mold 3. Both the upper ends of the first side mold 1 and the second side mold 3 have feed inlets 9, which form an arc-shaped structure. A liquid feeding mechanism is connected to the upper end of the side mold 1 and the upper end of the second side mold 3. The guiding mechanism includes a first mounting plate 2. One side of the first mounting plate 2 is connected to one side of the first side mold 1. A second mounting plate 4 is provided on the side of the second side mold 3 away from the first side mold 1. The first mounting plate 2 is provided with guide seats 7 in the middle of both sides of the first side mold 1. The second mounting plate 4 is provided with guide rods 8 on one side of each of the two guide seats 7. Guide grooves are opened on one side of each of the two guide seats 7 corresponding to the two guide rods 8. The two guide rods 8 are located inside the two guide grooves respectively.

[0031] The guiding mechanism improves the stability of the first side mold 1 and the second side mold 3 during movement, avoids misalignment of the two molds during mold closing, which can lead to cavity deviation, and ensures balanced force on the mold during mold opening. The first mold cavity 5 and the second mold cavity 6 cooperate to form the forming space of the water meter shell, and are used to support the soluble mold core 21 and provide it with a positioning reference. The feed port 9 receives the high-strength and tough aluminum alloy liquid delivered by the liquid distribution feeding mechanism. The liquid distribution feeding mechanism is used to evenly distribute and smoothly deliver the high-strength and tough aluminum alloy liquid into the mold feed port 9, and is also used to cooperate with the feeding cooling mechanism to control the temperature of the metal liquid feeding area. The guiding mechanism includes a first mounting plate 2, which is used to fix the first side mold 1 and to provide a mounting carrier for the guide seat 7, ensuring the relative position stability of the guiding structure and the side mold.

[0032] like Figures 2-6 As shown: The liquid distribution and feeding mechanism is used to evenly distribute and smoothly transport high-strength and tough aluminum alloy liquid to the mold inlet 9. The liquid distribution and feeding mechanism includes mounting flange rings 10, which are semi-arc-shaped. One mounting flange ring 10 is connected to a first guide ring 11 at its upper end, and the other mounting flange ring 10 is connected to a second guide ring 12 at its upper end. The first guide ring 11 and the second guide ring 12 are symmetrically arranged. Cooling chambers 23 are opened on the inner walls of both the first guide ring 11 and the second guide ring 12. A feeding cooling mechanism is connected inside the two cooling chambers 23. The upper ends of the inner walls of the first guide ring 11 and the second guide ring 12 are both chamfered. Mounting rings 13 are connected to the lower ends of both the first guide ring 11 and the second guide ring 12. The lower ends of the two mounting rings 13 are respectively connected to the upper ends of the two mounting flange rings 10. The upper ends of the two mounting rings 13 are respectively connected to the two mounting flange rings 10 by mounting bolts 14. A flange ring 10 is connected to a first support plate 15 on the upper part of one side of the inner wall of the first guide ring 11. A first liquid guide block 17 is connected to the upper end of the first support plate 15. A second support plate 16 is connected to one side of the first support plate 15. The outer wall of the second support plate 16 is connected to the upper part of the inner wall of the second guide ring 12. A second liquid guide block 18 is connected to one side of the first liquid guide block 17. The lower end of the second liquid guide block 18 is connected to the upper end of the second support plate 16. The first liquid guide block 17 and the second liquid guide block... 18 are all inclined on one side. The outer walls of the first support plate 15 and the second support plate 16 are both circumferentially provided with liquid outlets 19. The lower ends of the first support plate 15 and the second support plate 16 are connected to the locking blocks 20. The locking blocks 20 are L-shaped. The lower ends of the first support plate 15 and the second support plate 16 are connected to the soluble mold core 21. The upper part of the outer wall of the soluble mold core 21 is connected to the retaining ring 22. Multiple locking blocks 20 are respectively locked to the outer wall of the retaining ring 22.

[0033] The mounting flange ring 10 provides installation positioning for the first guide ring 11 and the second guide ring 12, ensuring that the two guide rings correspond to the position of the inlet 9. This allows the two flange rings to be spliced ​​and match the arc-shaped structure of the inlet 9, ensuring the integrity of the feeding channel. The cooling chamber 23 accommodates the pipes of the feeding cooling mechanism, achieving cooling of the inner wall of the guide rings. The feeding cooling mechanism removes heat from the guide rings and the area around the inlet 9 through coolant circulation, while preventing the molten metal from softening and sticking to the mold in the feeding area due to high temperature. The chamfered structure of the first guide ring 11 and the second guide ring 12 reduces the flow resistance when the high-strength and tough aluminum alloy molten metal enters the guide rings, while also preventing the molten metal from accumulating on the inner wall of the guide rings, ensuring smooth feeding. The first guide ring... Block 17 is used to guide the molten metal in the guide ring to flow to the outer wall of the tray. The inclined structure slows down the flow rate of the molten metal and avoids impacting the soluble mold core 21. The second guide block 18 cooperates with the first guide block 17 to form a symmetrical guide structure, guiding the molten metal to the lower liquid outlet 19 on both sides of the tray to ensure uniform liquid distribution. The lower liquid outlet 19 evenly delivers the molten metal on the tray to the feed inlet 9. The locking block 20 realizes the locking and fixing of the soluble mold core 21 to the tray, preventing the soluble mold core 21 from shifting during the feeding process and ensuring that the suspension height of the soluble mold core 21 in the cavity is stable. The soluble mold core 21 forms a hollow structure inside the casting. The retaining ring 22 cooperates with the locking block 20 to ensure that the soluble mold core 21 is placed in the center of the cavity.

[0034] like Figure 4 and Figure 5 As shown: The feeding cooling mechanism includes a first arc-shaped tube 24, which is located in the lower part of the inner wall of the cooling chamber 23. The middle of the lower end of the first arc-shaped tube 24 is connected to the upper end of the liquid delivery tube 31. Cooling tubes 25 are connected to both sides of the upper end of the first arc-shaped tube 24. The upper ends of multiple cooling tubes 25 are connected to a second arc-shaped tube 26, which is located in the upper part of the inner wall of the cooling chamber 23. A drain pipe 27 is connected to the middle of one side of the second arc-shaped tube 26. The first guide ring 11 and the second guide ring 12 are respectively provided with liquid outlets at the two drain pipes 27. The two drain pipes 27 are respectively located inside the two liquid outlets. The lower ends of the two drain pipes 27 are respectively connected to one side of the upper end of the first side mold 1 and one side of the upper end of the second side mold 3.

[0035] The first arc-shaped pipe 24 is used to receive the coolant delivered by the liquid delivery pipe 31, and at the same time, it evenly distributes the coolant to multiple cooling pipes 25 on both sides to ensure uniform cooling in the lower part of the cooling chamber 23. It also works with the second arc-shaped pipe 26 at the top to form a cooling range that covers the entire upper and lower parts. The cooling pipes 25 are used to deliver the coolant from the first arc-shaped pipe 24 to the second arc-shaped pipe 26, and at the same time, they are used to contact the inner wall of the guide ring through the pipe wall to bring the heat into the feeding area. The drain pipe 27 is used to discharge the coolant that has completed heat exchange in the cooling chamber 23, so that the coolant forms a circulation loop to ensure a continuous cooling effect.

[0036] like Figure 7 and Figure 8 As shown: Both the first side mold 1 and the second side mold 3 are connected to a mold cooling mechanism on their lower sides. The mold cooling mechanism is used to cool the first side mold 1 and the second side mold 3. The mold cooling mechanism includes two sets of inlet pipes 28. One end of each inlet pipe 28 is connected to the lower part of one side of the first side mold 1 and the lower part of one side of the second side mold 3, respectively. The inlet pipes 28 are arranged in an inverted L-shape. One end of each inlet pipe 28 is connected to a circulation pipe 29, and the other end of each circulation pipe 29 is connected to a delivery pipe 31. The middle part of one side of each circulation pipe 29 is arc-shaped. The shapes of the parts are adapted to the shapes of the first mold cavity 5 and the second mold cavity 6 respectively. The upper end of one of the infusion pipes 31 passes through the first side mold 1, one of the mounting flange rings 10 and the first guide ring 11 in sequence and extends into the corresponding cooling cavity 23. The upper end of the other infusion pipe 31 passes through the second side mold 3, another mounting flange ring 10 and the second guide ring 12 in sequence and extends into the corresponding cooling cavity 23. The first side mold 1 and the second side mold 3 are respectively provided with mounting cavities 30 at the two circulation pipes 29. The two circulation pipes 29 are respectively located inside the two mounting cavities 30.

[0037] The mold cooling mechanism is used to cool the first side mold 1 and the second side mold 3, guiding the casting to solidify evenly. The inlet pipe 28 delivers the coolant from the external cooling system to the circulation pipe 29, and at the same time provides a stable inflow channel for the coolant, ensuring that the cooling flow rate is controllable. The circulation pipe 29 is in close contact with the outer wall of the mold cavity to deliver the coolant. Through large-area contact, it quickly absorbs the heat around the mold cavity, promoting the solidification of the casting. The delivery pipe 31 is used to deliver the coolant in the circulation pipe 29 to the first arc-shaped pipe 24 of the feeding cooling mechanism, and at the same time, it is used to form a series circuit between the mold cooling mechanism and the feeding cooling mechanism, simplifying the structure of the cooling system. The arc-shaped setting of the circulation pipe 29 is used to adapt to the arc-shaped outer wall of the mold cavity, and at the same time, it is used to keep the circulation pipe 29 and the mold cavity at the minimum distance, improving the heat exchange efficiency. The mounting cavity 30 is used to accommodate the circulation pipe 29, and at the same time, it is used to provide a fixed space for the circulation pipe 29, ensuring that the relative position of the circulation pipe 29 and the mold cavity is stable, so that the circulation pipe 29 is in close contact with the side mold, improving the heat conduction efficiency and ensuring the cooling effect.

[0038] Working principle: The soluble mold core 21 is placed in the first mold cavity 5 of the first side mold 1. It is fixed by the retaining ring 22 on the upper part of the outer wall of the soluble mold core 21 and the retaining block 20, ensuring that the soluble mold core 21 is centrally suspended inside the first mold cavity 5, laying the foundation for the subsequent formation of the hollow structure of the watch case.

[0039] The external mold closing mechanism is activated, which drives the second mounting plate 4 and the second side mold 3 connected to it to move towards the first side mold 1. The guide rods 8 on both sides of the second mounting plate 4 slide smoothly along the guide groove of the guide seat 7 on the first mounting plate 2 to ensure that the second side mold 3 and the first side mold 1 are precisely aligned. When the two molds are fully aligned, the second mold cavity 6 of the second side mold 3 and the first mold cavity 5 of the pre-stored soluble mold core 21 are combined to form a complete water meter shell cavity. The two feed ports 9 are spliced ​​together to form an arc-shaped channel, which is ready for the metal liquid to be fed.

[0040] The molten high-strength and high-toughness aluminum alloy liquid is pressure-transported to the liquid distribution and feeding mechanism. The molten metal first enters the interior of the symmetrically arranged first guide ring 11 and second guide ring 12, and is smoothly guided by the chamfered structure at the upper end. Then, it is diverted by the inclined surfaces of the first liquid guide block 17 and the second liquid guide block 18, so that the molten metal is injected into the feed ports 9 on both sides without impact through the circumferentially opened lower liquid ports 19 of the first support plate 15 and the second support plate 16, and then slowly fills the complete cavity, avoiding the displacement of the soluble mold core 21 or the formation of air entrapment defects in the casting due to the deviation of the molten metal flow.

[0041] During the molten metal filling process, the feeding cooling mechanism and the mold cooling mechanism are started simultaneously. The coolant enters the mounting cavity 30 of the first side mold 1 and the second side mold 3 through two sets of inlet pipes 28 respectively, and flows through the circulation pipe 29 which is perfectly matched to the shape of the first mold cavity 5 and the second mold cavity 6. The coolant quickly absorbs the heat of the molten metal around the cavity through the pipe wall, and guides the casting to solidify evenly from the outer wall to the center, ensuring the tensile strength and structural stability of the high-strength and tough aluminum alloy.

[0042] Two sets of infusion pipes 31 deliver coolant upwards, passing through the first side mold 1, the second side mold 3, and the mounting flange ring 10 in sequence, before entering the cooling chamber 23 of the first guide ring 11 and the second guide ring 12. The coolant is first evenly distributed through the lower first arc-shaped pipe 24, and then diverted to the upper second arc-shaped pipe 26 through multiple cooling pipes 25 on both sides, fully enveloping the inner wall of the guide ring and the periphery of the inlet 9, quickly carrying away the high temperature generated by the continuous flushing of the molten metal, preventing the molten metal at the inlet 9 from softening and sticking to the mold cavity, and preparing for subsequent demolding.

[0043] After the casting has completely solidified, the second side mold 3 is driven in reverse. The mold is opened smoothly through the cooperation of the guide rod 8 and the guide seat 7. Finally, the formed water meter casing casting is taken out from the first mold cavity 5. Subsequently, the soluble mold core 21 inside is removed by chemical dissolution process to obtain a hollow high-strength and lightweight casing. The coolant is returned to the cooling system through the drain pipe 27 to complete a single production cycle.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A conformal cooling water channel structure for a low-pressure casting mold of a water meter casing, comprising a first side mold (1), characterized in that, A second side mold (3) is provided on one side of the first side mold (1), and a guide mechanism is provided on the other side of the first side mold (1). The guide mechanism is used to improve the stability of the first side mold (1) and the second side mold (3) when they move. A first mold cavity (5) is opened in the middle of one side of the first side mold (1), and a second mold cavity (6) is opened in the middle of one side of the second side mold (3). A feed port (9) is opened on one side of the upper end of the first side mold (1) and one side of the upper end of the second side mold (3). The two feed ports (9) form an arc-shaped structure. A liquid feeding mechanism is connected to the upper end of the first side mold (1) and the upper end of the second side mold (3). The liquid feeding mechanism is used to evenly distribute and smoothly transport high-strength and tough aluminum alloy liquid to the mold feed port (9). The liquid feeding mechanism includes a mounting flange ring (10). The mounting flange ring (10) is semi-arc-shaped. One of the mounting flange rings (10) is connected to a first guide ring (11) at its upper end, and the other mounting flange ring (10) is connected to a second guide ring (12) at its upper end. The first guide ring (11) and the second guide ring (12) are symmetrically arranged. Cooling chambers (23) are opened on the inner walls of the first guide ring (11) and the second guide ring (12). The two cooling chambers (23) are connected to a feeding cooling mechanism. The first side mold (1) and the second side mold (3) are both connected to a mold cooling mechanism on the lower part of one side. The mold cooling mechanism is used to cool the first side mold (1) and the second side mold (3). A first support plate (15) is connected to the upper part of one side of the inner wall of the first guide ring (11). A first liquid guide block (17) is connected to the upper end of the first support plate (15). A second support plate (16) is connected to one side of the first support plate (15). The outer wall of the second support plate (16) is connected to the upper part of the inner wall of the second guide ring (12). A second liquid guide block (18) is connected to one side of the first liquid guide block (17). The lower end of the second liquid guide block (18) is connected to the upper end of the second support plate (16). One side of the first liquid guide block (17) and the second liquid guide block (18) are both inclined. The outer walls of the first support plate (15) and the second support plate (16) are both circumferentially provided with liquid outlets (19). The feeding cooling mechanism includes a first arc-shaped tube (24), which is located at the lower part of the inner wall of the cooling chamber (23). The middle part of the lower end of the first arc-shaped tube (24) is connected to the upper end of the liquid delivery tube (31). Cooling tubes (25) are connected to both sides of the upper end of the first arc-shaped tube (24). The upper ends of multiple cooling tubes (25) are connected to a second arc-shaped tube (26). The second arc-shaped tube (26) is located at the upper end of the inner wall of the cooling chamber (23). A drain pipe (27) is connected to the middle part of one side of the second arc-shaped tube (26). The first guide ring (11) and the second guide ring (12) are respectively provided with outlets at the two drain pipes (27). The two drain pipes (27) are respectively located inside the two outlets. The lower ends of the two drain pipes (27) are respectively connected to one side of the upper end of the first side mold (1) and one side of the upper end of the second side mold (3). The mold cooling mechanism includes an inlet pipe (28), and there are two sets of inlet pipes (28). One end of each inlet pipe (28) is connected to the lower part of one side of the first side mold (1) and the lower part of one side of the second side mold (3), respectively. The inlet pipe (28) is arranged in an inverted L-shape. One end of the inlet pipe (28) is connected to a circulation pipe (29), and one end of the circulation pipe (29) is connected to a delivery pipe (31). The shape of the middle part of one side of the circulation pipe (29) is arc-shaped. The shapes of the middle parts of one side of the two circulation pipes (29) are respectively adapted to the shapes of the first mold cavity (5) and the second mold cavity (6).

2. The conformal cooling water channel structure of a low-pressure casting mold for a water meter casing according to claim 1, characterized in that, The guiding mechanism includes a first mounting plate (2), one side of the first mounting plate (2) is connected to one side of the first side mold (1), and a second mounting plate (4) is provided on the side of the second side mold (3) away from the first side mold (1). The first mounting plate (2) is provided with guide seats (7) in the middle of both sides of the first side mold (1), and the second mounting plate (4) is provided with guide rods (8) on one side of each of the two guide seats (7). Guide grooves are provided on one side of each of the two guide seats (7) corresponding to the two guide rods (8), and the two guide rods (8) are located inside the two guide grooves respectively.

3. The conformal cooling water channel structure of a low-pressure casting mold for a water meter casing according to claim 1, characterized in that, The upper end of the inner wall of the first guide ring (11) and the upper part of the inner wall of the second guide ring (12) are both chamfered. The lower ends of the first guide ring (11) and the second guide ring (12) are connected to mounting rings (13). The lower ends of the two mounting rings (13) are respectively connected to the upper ends of the two mounting flange rings (10). The upper ends of the two mounting rings (13) are respectively connected to the two mounting flange rings (10) by mounting bolts (14).

4. The conformal cooling water channel structure of a low-pressure casting mold for a water meter casing according to claim 1, characterized in that, Both the lower ends of the first tray (15) and the second tray (16) are connected to a locking block (20). The locking block (20) is L-shaped. The lower ends of the first tray (15) and the second tray (16) are connected to a soluble mold core (21). The upper part of the outer wall of the soluble mold core (21) is connected to a retaining ring (22). Multiple locking blocks (20) are respectively locked to the outer wall of the retaining ring (22).

5. The conformal cooling water channel structure of a low-pressure casting mold for a water meter casing according to claim 1, characterized in that, One of the infusion tubes (31) passes through the first side mold (1), one of the mounting flange rings (10) and the first guide ring (11) in sequence and extends into the corresponding cooling chamber (23). The other infusion tube (31) passes through the second side mold (3), another mounting flange ring (10) and the second guide ring (12) in sequence and extends into the corresponding cooling chamber (23). The first side mold (1) and the second side mold (3) are respectively provided with mounting cavities (30) at the two circulation tubes (29). The two circulation tubes (29) are respectively located inside the two mounting cavities (30).

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