A vehicle frame integral casting molding device

Abstract

This invention provides an integrated casting molding device for vehicle frames, including a base, a top plate, and a column. A drive mechanism is mounted on the top plate, and a water-cooling mechanism is mounted on the base. Fixed and moving mold assemblies cooperate to form a cavity, with upper and lower cooling chambers between their shells, each containing a heat pipe assembly. Upper and lower lifting assemblies are respectively located on the outer sides of the moving and fixed mold shells for driving the mold core to rise and fall. A guide support assembly connects to the column, guiding the moving mold shell and supporting the fixed mold shell. A gating pipe is installed in the middle of the moving mold core and extends from the top of the moving mold shell. The water-cooling mechanism provides cooling water to the cooling chambers, improving cooling efficiency and casting quality. This invention, through a combined water-cooling and heat pipe cooling system and a lifting and separating design for the mold assemblies, achieves effective cooling of complex, irregularly shaped vehicle frame castings and convenient mold maintenance, thereby improving casting quality.

Description

Technical Field

[0001] This invention relates to the field of casting technology, and more specifically, to a one-piece casting molding apparatus for vehicle frames. Background Technology

[0002] With industrial development, the requirements for the integration, lightweighting and high strength of structural components such as vehicle frames are increasing, prompting the use of high-pressure or low-pressure casting processes to achieve integral molding of vehicle frames made of materials such as aluminum alloys and magnesium alloys.

[0003] However, vehicle frame structures are typically characterized by complex shapes, significant variations in wall thickness, and numerous corners and connections, posing a significant challenge to temperature control during the casting process. Traditional mold cooling often relies on cooling water channels within the mold shell for overall heat dissipation. However, in areas with thicker walls or more complex structures, such as the intersection of risers and crossbeams, heat accumulates severely, and the cooling rate is much slower than in thinner-walled areas. This easily leads to hot spots, causing defects such as shrinkage cavities, porosity, and deformation within the casting, seriously affecting the product's mechanical properties and yield.

[0004] In addition, the cooling systems of existing molds are mostly closed and embedded structures, with the cooling channels and mold cores being machined as one piece. Once the channels become scaled or blocked due to long-term use, or the supporting cooling components (such as heat-conducting components) are damaged, it is extremely difficult to clean or replace them. Often, it is necessary to disassemble the entire mold or even replace the mold core, resulting in high maintenance costs and long maintenance time, which seriously affects production efficiency.

[0005] Therefore, there is an urgent need to develop an integrated frame casting molding device that can achieve efficient cooling of the mold as a whole and in its parts, and facilitate the maintenance and repair of the cooling system, in order to meet the modern manufacturing requirements of high quality, high efficiency and low cost. Summary of the Invention

[0006] The purpose of this invention is to provide an integrated casting device for vehicle frames, which aims to solve the problems mentioned in the background art.

[0007] This invention is implemented as follows: a one-piece casting molding device for a vehicle frame includes a base and a top plate, with a column fixed between the base and the top plate, and further includes:

[0008] The system comprises a fixed mold assembly and a moving mold assembly, which are configured to cooperate. The fixed mold assembly includes a fixed mold core and a fixed mold shell that cooperates with its outer side. The moving mold assembly includes a moving mold core and a moving mold shell that cooperates with its outer side. After the fixed mold core and the moving mold core are closed, a cavity matching the shape of the vehicle frame is formed. A lower cooling cavity is formed between the fixed mold core and the fixed mold shell, and an upper cooling cavity is formed between the moving mold core and the moving mold shell. An upper lifting assembly for driving the moving mold core to rise and fall is also installed on the outer side of the moving mold shell, and a lower lifting assembly for driving the fixed mold core to rise and fall is also installed on the outer side of the fixed mold shell. A gating pipe is installed in the middle of the moving mold core, and the gating pipe slides out from the middle of the top of the moving mold shell.

[0009] The guide support assembly is further installed on the outer side of the moving mold shell and the fixed mold shell and is connected to the column. The guide support assembly is used to slide the moving mold shell and fix the fixed mold shell.

[0010] A drive mechanism is installed on the top plate for driving the moving mold assembly to rise and fall.

[0011] The base is also equipped with a water supply cooling mechanism for cooling the upper and lower cooling chambers; heat pipe assemblies embedded in the moving mold core and the fixed mold core are also installed in the upper and lower cooling chambers respectively.

[0012] Optionally, the guide support assembly includes a side support plate fixed to the outside of the moving mold shell and the fixed mold shell. The side support plate is slidably connected to the column, and the side support plate installed on the outside of the fixed mold shell is also provided with a fastening bolt. The fastening bolt is used to lock and fix the side support plate installed on the outside of the fixed mold shell to the column.

[0013] Optionally, the driving mechanism includes hydraulic cylinders fixed at the four corners of the top plate, and the telescopic spindle end of the hydraulic cylinder is fixedly connected to the moving mold shell of the moving mold assembly.

[0014] Optionally, the upper lifting assembly and the lower lifting assembly have the same structure. The upper lifting assembly includes an opening and closing telescopic cylinder, an outer frame one, and an outer frame two. The inner wall of the moving mold shell is clearance-fitted with the outer side of the moving mold core. The outer bottom of the moving mold shell and the moving mold core are respectively fixed with outer frame one and outer frame two. Multiple opening and closing telescopic cylinders are also evenly distributed and fixed on outer frame one. The telescopic spindle end of the opening and closing telescopic cylinder is fixedly connected to outer frame two. A sealing ring is also provided on the side of outer frame one and outer frame two that are close to each other.

[0015] Optionally, the water supply cooling mechanism includes a cooling tank, a first cooling component, and a second cooling component. The cooling tank is fixed to a base, and a flow equalization cooling component is installed inside the cooling tank. The first cooling component includes an outlet pipe, a supply pipe, and a supply pump. The first supply pump is fixed to the cooling tank, and its inlet is connected to the bottom of the inner cavity of the cooling tank. The outlet of the first supply pump is connected to the front left end of the lower cooling chamber through the supply pipe. One end of the outlet pipe is connected to the front left end of the upper cooling chamber, and the other end of the outlet pipe is connected to the top of the inner cavity of the cooling tank. The second cooling component includes a second supply pump, a second supply pipe, and a second outlet pipe. The second supply pump is fixed to the cooling tank, and its inlet is connected to the bottom of the inner cavity of the cooling tank. The outlet of the second supply pump is connected to the rear right end of the upper cooling chamber through the supply pipe. One end of the second outlet pipe is connected to the rear right end of the lower cooling chamber, and the other end of the outlet pipe is connected to the top of the inner cavity of the cooling tank.

[0016] Optionally, the top of the cooling box is also provided with a water inlet; the flow equalization refrigeration assembly includes a flow equalization mesh plate and a plate or shell-and-tube heat exchanger fixed on the flow equalization mesh plate, the plate or shell-and-tube heat exchanger being connected to an external cold source.

[0017] Optionally, the casting pipe adopts an L-shaped structure, the casting pipe is equipped with a heating sleeve, one end of the vertical part of the casting pipe is connected to the top of the inner cavity of the moving mold core, and the vertical part of the casting pipe is also slidably connected to a collar fixed in the middle of the moving mold shell.

[0018] Optionally, the top of the moving mold core and the bottom of the fixed mold core are respectively provided with multiple slots, the heat pipe assembly is installed in the slots, and the other end of the heat pipe assembly is elastically abutted against the top of the moving mold shell or the bottom of the fixed mold shell.

[0019] Optionally, the heat pipe assembly includes a shell, which is a closed cylindrical structure. The inner wall of the shell is provided with a spiral plate, and the inner side of the shell is filled with a liquid working fluid. A positioning head is fixed at the middle of one end of the shell, and an elastic element is fitted on the positioning head. The shell is installed on the groove, and the end of the elastic element away from the positioning head elastically abuts against the top of the moving mold shell or the bottom of the fixed mold shell. Multiple heat transfer columns are also circumferentially fixed on the outer side of the positioning head at the end of the shell. The heat transfer columns are arranged through the end of the shell, and the end of the heat transfer column away from the shell is inclined away from the positioning head. When the shell is installed in the groove, the heat transfer columns are located in the upper cooling chamber or the lower cooling chamber.

[0020] Optionally, the shell, heat transfer column, and positioning head are integrally formed, and the shell, heat transfer column, and positioning head are made of copper alloy, aluminum alloy, stainless steel, or nickel alloy; the liquid working medium is pure water, ethanol, acetone, or liquid metal, and the inner cavity of the shell is evacuated to a near-vacuum state.

[0021] The present invention provides an integrated casting and molding device for vehicle frames, which has the following beneficial effects:

[0022] By defining the structure of the fixed mold assembly and the moving mold assembly, and by having the upper lifting assembly drive the moving mold core to rise and fall, and the lower lifting assembly drive the fixed mold core to rise and fall, it is convenient to control the separation of the moving mold core and the moving mold shell, as well as the separation of the fixed mold core and the fixed mold shell, so as to achieve the purpose of cleaning and maintaining the upper and lower cooling cavities, as well as maintaining and replacing the heat pipe assembly.

[0023] During casting, the fixed mold assembly can be pre-installed and locked in a suitable position on the column. Then, the moving mold assembly and the fixed mold assembly can be closed by controlling the drive mechanism. After that, molten metal can be injected through the pouring pipe. After pouring, the water cooling mechanism can be activated to cool the upper and lower cooling chambers. The heat pipe assembly can solve the problem of local heat dissipation in complex areas. It achieves overall heat dissipation of the mold through water cooling and local heat dissipation through heat pipe cooling. It is especially suitable for the cooling needs of castings with irregular shapes and uneven wall thickness, such as vehicle frames, thus improving the quality of casting.

[0024] In summary, this device, through a combination of water cooling and heat pipe cooling, as well as the lifting and separation design of the mold components, achieves effective cooling of irregularly shaped and complex vehicle frame castings and convenient mold maintenance, thereby improving casting quality.

[0025] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0027] Figure 1 This is a schematic diagram of the overall structure of the integrated casting and molding device for the vehicle frame provided in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle;

[0029] Figure 3 for Figure 1 Another perspective structural diagram;

[0030] Figure 4 for Figure 3 A magnified structural diagram of part B in the middle section;

[0031] Figure 5 An isometric view of the integrated frame casting device provided in an embodiment of the present invention;

[0032] Figure 6 for Figure 5 A magnified structural diagram of section C;

[0033] Figure 7 This is a schematic diagram of the heat pipe assembly in the integrated frame casting device provided in an embodiment of the present invention;

[0034] Figure 8 for Figure 7 Axonometric drawing.

[0035] In the diagram: 1-Base, 2-Cooling box, 3-Fixed mold assembly, 4-Moving mold assembly, 5-Gating pipe, 6-Top plate, 7-Drive mechanism, 8-Column, 9-Cooling assembly one, 10-Water outlet pipe one, 11-Water supply pipe one, 12-Water supply pump one, 13-Side support plate, 14-Fasting bolt, 15-Moving mold shell, 16-Opening and closing telescopic cylinder, 17-Outer frame one, 18-Outer frame two, 19-Fixed mold core, 20-Cooling assembly two, 21-Water supply pump two, 22-Water supply pipe two, 23-Water outlet pipe two, 24-Water inlet, 25-Fixed mold shell, 26-Flow equalization cooling assembly, 27-Moving mold core, 28-Insertion groove, 29-Heat pipe assembly, 30-Elastic element, 31-Heat transfer column, 32-Positioning head, 33-Cylinder shell, 34-Spiral plate. Detailed Implementation

[0036] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0037] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0038] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0039] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0041] The following is a detailed description of an integrated frame casting device according to an embodiment of the present invention, with reference to the accompanying drawings.

[0042] like Figure 1-6As shown, an integrated frame casting device according to an embodiment of the present invention includes a base 1 and a top plate 6, with a column 8 fixedly installed between the base 1 and the top plate 6, and further includes:

[0043] A fixed mold assembly 3 and a moving mold assembly 4 are configured to cooperate. The fixed mold assembly 3 includes a fixed mold core 19 and a fixed mold shell 25 that cooperates with its outer side. The moving mold assembly 4 includes a moving mold core 27 and a moving mold shell 15 that cooperates with its outer side. After the fixed mold core 19 and the moving mold core 27 are closed, a cavity matching the shape of the vehicle frame is formed. A lower cooling cavity is formed between the fixed mold core 19 and the fixed mold shell 25, and an upper cooling cavity is formed between the moving mold core 27 and the moving mold shell 15. An upper lifting assembly for driving the moving mold core 27 to rise and fall is also installed on the outer side of the moving mold shell 15, and a lower lifting assembly for driving the fixed mold core 19 to rise and fall is also installed on the outer side of the fixed mold shell 25. A gating pipe 5 is installed in the middle of the moving mold core 27, and the gating pipe 5 slides out from the middle of the top of the moving mold shell 15.

[0044] The guide support assembly is also installed on the outside of the moving mold shell 15 and the fixed mold shell 25, and is connected to the column 8. The guide support assembly is used to slide the moving mold shell 15 and fix the fixed mold shell 25.

[0045] Drive mechanism 7, the top plate 6 is equipped with a drive mechanism 7 for driving the moving mold assembly 4 to rise and fall;

[0046] The base 1 is also equipped with a water-supply cooling mechanism for cooling the upper and lower cooling chambers. Heat pipe assemblies 29, embedded in the moving mold core 27 and the fixed mold core 19, are respectively installed in the upper and lower cooling chambers. The heat pipe assemblies 29 utilize the working fluid phase change heat transfer principle to rapidly conduct heat from localized high-temperature areas of the mold to the cooling chambers. The heat is then carried away by the cooling water, achieving localized enhanced cooling, which is particularly suitable for areas prone to heat generation, such as thick walls and corners in vehicle frame castings.

[0047] In this embodiment of the invention, the structure of the fixed mold assembly 3 and the moving mold assembly 4, along with the upper lifting assembly driving the moving mold core 27 to rise and fall, and the lower lifting assembly driving the fixed mold core 19 to rise and fall, facilitates the separation of the moving mold core 27 from the moving mold shell 15 and the fixed mold core 19 from the fixed mold shell 25. This allows for the cleaning and maintenance of the upper and lower cooling chambers, as well as the maintenance and replacement of the heat pipe assembly 29. During casting, the fixed mold assembly 3 can be pre-installed and locked in a suitable position on the column 8. Then, the moving mold assembly 4 and the fixed mold assembly 3 can be closed by the drive mechanism 7. Subsequently, molten metal can be injected through the pouring pipe 5. After pouring, the water cooling mechanism can be activated to cool the upper and lower cooling chambers. The heat pipe assembly 29 can solve the problem of local heat dissipation in complex areas. It achieves overall heat dissipation of the mold through water cooling and local heat dissipation through heat pipe cooling, which is particularly suitable for the cooling needs of castings with irregular structures and uneven wall thicknesses, such as vehicle frames, thereby improving the quality of casting.

[0048] In summary, this device, through a combination of water cooling and heat pipe cooling, as well as the lifting and separation design of the mold components, achieves effective cooling of irregularly shaped and complex vehicle frame castings and convenient mold maintenance, thereby improving casting quality.

[0049] like Figure 1-6 As shown, in a preferred embodiment of the present invention, the guide support assembly includes a side support plate 13 fixed to the outside of the moving mold shell 15 and the fixed mold shell 25. The side support plate 13 is slidably connected to the column 8, and the side support plate 13 installed on the outside of the fixed mold shell 25 is also provided with a fastening bolt 14. The fastening bolt 14 is used to lock and fix the side support plate 13 installed on the outside of the fixed mold shell 25 to the column 8, thereby realizing the adjustable locking of the position of the side support plate 13 on the outside of the fixed mold shell 25 and the sliding guidance of the side support plate 13 on the outside of the moving mold shell 15.

[0050] The drive mechanism 7 includes hydraulic cylinders fixed at the four corners of the top plate 6. The telescopic spindle end of the hydraulic cylinder is fixedly connected to the moving mold shell 15 of the moving mold assembly 4, thereby realizing stable driving and lifting of the moving mold assembly 4.

[0051] The upper lifting assembly and the lower lifting assembly have the same structure. The following description uses the structure of the upper lifting assembly as an example: Figure 4As shown, the lifting assembly includes an opening and closing telescopic cylinder 16, an outer frame 17, and an outer frame 28. The inner wall of the moving mold shell 15 is clearance-fitted with the outer side of the moving mold core 27. The outer frame 17 and the outer frame 28 are respectively fixed to the bottom of the outer sides of the moving mold shell 15 and the moving mold core 27. Multiple opening and closing telescopic cylinders 16 are also evenly distributed and fixed on the outer frame 17. The telescopic spindle end of the opening and closing telescopic cylinder 16 is fixedly connected to the outer frame 28. A sealing ring (not shown) is also provided on the side of the outer frame 17 and the outer frame 28 that are close to each other. By extending and retracting the opening and closing telescopic cylinder 16, the positional relationship between the moving mold core 27 and the moving mold shell 15 can be controlled, thereby facilitating the cleaning, maintenance, and replacement of the upper cooling cavity and the heat pipe assembly 29. The sealing ring can ensure the sealing of the outer frame 17 and the outer frame 28 after they come into contact, thereby keeping the upper cooling cavity in a closed state.

[0052] The water supply cooling mechanism includes a cooling tank 2, a first cooling component 9, and a second cooling component 20. The cooling tank 2 is fixed to the base 1. A flow equalization cooling component 26 is installed inside the cooling tank 2. The first cooling component 9 includes an outlet pipe 10, a supply pipe 11, and a supply pump 12. The supply pump 12 is fixed to the cooling tank 2, and its inlet is connected to the bottom of the inner cavity of the cooling tank 2. The outlet of the supply pump 12 is connected to the front left end of the lower cooling chamber through the supply pipe 11. One end of the outlet pipe 10 is connected to the upper cooling chamber. The front left end is connected, and the other end of the water outlet pipe 10 is connected to the top of the inner cavity of the cooling box 2; the cooling assembly 20 includes a water pump 21, a water pipe 22 and a water outlet pipe 23. The water pump 21 is fixed on the cooling box 2 and its inlet is connected to the bottom of the inner cavity of the cooling box 2. The outlet of the water pump 21 is connected to the rear right end of the upper cooling cavity through the water pipe 22. One end of the water outlet pipe 23 is connected to the rear right end of the lower cooling cavity, and the other end of the water outlet pipe 23 is connected to the top of the inner cavity of the cooling box 2.

[0053] Preferably, the top of the cooling tank 2 is also provided with a water inlet 24 for easy water replenishment; the flow equalization cooling assembly 26 includes a flow equalization mesh plate and a plate or shell-and-tube heat exchanger fixed on the flow equalization mesh plate. The plate or shell-and-tube heat exchanger is connected to an external cold source (not shown, such as municipal tap water or industrial chiller units). The circulating water in the cooling tank 2 exchanges heat with the external cold source through the heat exchanger, indirectly reducing the temperature. Among them, the plate heat exchanger has a small size and high heat exchange efficiency (up to 90% or more), suitable for small to medium flow rates; the shell-and-tube heat exchanger is resistant to high pressure and scale, suitable for high flow rate scenarios.

[0054] For the water cooling mechanism, the different distribution positions of cooling component 1 9 and cooling component 2 20 allow the water flow directions in the upper and lower cooling chambers to differ, achieving uniform cooling of the fixed mold core 19 and the moving mold core 27 during molding, thereby improving the molding quality. The water returning from cooling component 1 9 and cooling component 2 20 flows into the flow equalization cooling component 26 for even distribution and rapid cooling, and can then be reused by water pump 1 12 and water pump 2 21 to achieve circulating cooling.

[0055] Overall, the water inlet and outlet paths of cooling component 1 9 and cooling component 2 20 are arranged in a cross pattern to form a convection cooling mode, which can effectively avoid cooling dead zones and improve the overall cooling uniformity.

[0056] In addition, the casting pipe 5 adopts an L-shaped structure and is equipped with a heating sleeve (not shown) to ensure the fluidity and temperature of the molten metal. One end of the vertical part of the casting pipe 5 is connected to the top of the inner cavity of the moving mold core 27. The vertical part of the casting pipe 5 is also slidably connected to the collar fixed in the middle of the moving mold shell 15. The casting pipe 5 can be adapted to the lifting and lowering adjustment of the moving mold core 27.

[0057] like Figure 5-8 As shown, in a preferred embodiment of the present invention, the top of the moving mold core 27 and the bottom of the fixed mold core 19 are respectively provided with a plurality of grooves 28, the heat pipe assembly 29 is installed in the grooves 28, and the other end of the heat pipe assembly 29 is elastically abutted against the top of the moving mold shell 15 or the bottom of the fixed mold shell 25.

[0058] Specifically, the heat pipe assembly 29 includes a shell 33, which is a closed cylindrical structure. The inner wall of the shell 33 is provided with a spiral plate 34, and the inner side of the shell 33 is filled with a liquid working fluid (not shown). A positioning head 32 is fixed in the middle of one end of the shell 33. An elastic element 30 is sleeved on the positioning head 32. The elastic element 30 is a spring. The shell 33 is installed on the groove 28. The end of the elastic element 30 away from the positioning head 32 elastically abuts against the top of the moving mold shell 15 or the bottom of the fixed mold shell 25. A plurality of heat transfer columns 31 are also circumferentially fixed on the outer side of the positioning head 32 at the end of the shell 33. The heat transfer columns 31 are cylindrical and are arranged through the end of the shell 33. The end of the heat transfer column 31 away from the shell 33 is inclined away from the positioning head 32. When the shell 33 is installed in the groove 28, the heat transfer columns 31 are located in the upper cooling chamber or the lower cooling chamber. The shell 33, heat transfer column 31 and positioning head 32 are integrally formed and are made of copper alloy, aluminum alloy, stainless steel or nickel alloy, etc., to meet the heat dissipation requirements. Different working fluids and shell materials can be selected according to the solidification characteristics of the casting material (such as aluminum alloy, magnesium alloy) to adapt to different cooling rate requirements.

[0059] For the heat pipe assembly 29, it can be arranged in places where conventional water channels are difficult to arrange, such as the corner of the frame corresponding to the mold, the connection between the riser and the crossbeam (the temperature of the mold in the thick-walled area of ​​the frame or the irregular corner rises rapidly, possibly 50-100℃ higher than other areas). The condensation end of the shell 33 is connected to the cooling cavity, which quickly transfers the locally concentrated heat to the water cooling system, forming a synergistic mechanism of local enhanced heat dissipation and overall efficient heat dissipation.

[0060] The heat pipe evaporation section embedded in these areas (in contact with the high-temperature area of ​​the mold) rapidly absorbs heat, and the working fluid vaporizes and transfers the heat to the condensation section; the heat pipe condensation section transfers heat to the cooling water through heat exchange with the cooling chamber (or is directly immersed in the water flow), and the water flow carries it away; the cooling chamber at the same time dissipates heat to other areas of the mold, ensuring overall temperature balance and avoiding local overheating or overcooling.

[0061] Preferably, the liquid working fluid is pure water, ethanol, acetone, or liquid metal, selected according to the operating temperature range, and the inner cavity of the shell 33 is evacuated to a near-vacuum state (i.e., the inner cavity of the shell 33 is under negative pressure, and the pressure is lower than the saturated vapor pressure of the working fluid at that temperature). When one end of the shell 33 (evaporation section) comes into contact with the high-temperature region, the working fluid absorbs heat and rapidly vaporizes. The vapor flows naturally to the other end (condensation section) with a lower temperature under the action of the pressure difference inside the pipe. In the condensation section, the vapor releases heat and liquefies into liquid, which flows back to the evaporation section through the spiral plate 34 on the inner wall of the pipe to complete the cycle.

[0062] The entire process achieves heat transfer solely through a natural cycle of heat absorption vaporization, steam flow, heat release liquefaction, and liquid reflux. It requires no electricity, mechanical pumps, or other external drives, thus offering advantages such as simple structure, high reliability, and zero energy consumption. It is highly suitable for use in conjunction with systems such as water cooling.

[0063] The above embodiments of the present invention provide an integrated casting molding device for a vehicle frame. First, the fixed mold assembly 3 is installed on the column 8 and locked with fastening bolts 14. The moving mold assembly 4 is driven down by the drive mechanism 7 (such as the hydraulic cylinder on the top plate 6) so that it closes with the fixed mold assembly 3 to form a closed cavity. Then, heated molten metal is injected through the L-shaped pouring pipe 5 for casting.

[0064] After the liquid injection is completed, the water supply and cooling mechanism is activated. Water pump 12 and water pump 21 pump the cooling water in the cooling tank 2 into the lower cooling chamber and upper cooling chamber through water pipe 11 and water pipe 22, respectively. After flowing through the lower and upper cooling chambers, the cooling water returns to the top of the cooling tank 2 through water outlet pipe 10 and water outlet pipe 23, respectively. Then, it is circulated after exchanging heat with the external cold source through the uniform flow cooling assembly 26 (including heat exchanger), achieving uniform cooling of the mold as a whole. At the same time, the heat pipe assembly 29, which is arranged in the local high temperature area of ​​the mold (such as the thick wall of the frame or the irregular corner), plays a role. Its shell 33- The evaporation section absorbs heat from the mold, and the liquid working fluid inside vaporizes and flows along the shell 33 to the other end (condensation section) where the temperature is lower. In the condensation section, the heat is released to the cooling water in the upper or lower cooling chamber, and then liquefies. It then flows back to the evaporation section through the spiral plate 34, forming a continuous heat transfer cycle. When it is necessary to clean or maintain the cooling chamber or heat pipe assembly 29, the moving mold core 27 is driven to rise and fall relative to the moving mold shell 15 by the upper lifting assembly (such as the opening and closing telescopic cylinder 16), and the fixed mold core 19 is driven to rise and fall relative to the fixed mold shell 25 by the lower lifting assembly, thereby opening the cooling chamber for operation.

[0065] In summary, this device, through its lifting and separating mold design and water-cooled-heat pipe composite cooling system, enables convenient maintenance of the cooling chamber and heat pipe after the frame casting is formed, as well as efficient and uniform cooling of irregularly shaped thick-walled parts, significantly improving the quality of the casting.

[0066] The control of each component can be achieved using a PLC controller disclosed in the existing technology. There are no specific limitations on the model and circuit connection of each component, and they can be flexibly set in actual applications.

[0067] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve any improvement to the software and methods.

[0068] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A one-piece casting molding device for a vehicle frame, comprising a base (1) and a top plate (6), wherein a column (8) is fixedly installed between the base (1) and the top plate (6), characterized in that, Also includes: A fixed mold assembly (3) and a moving mold assembly (4) are configured to cooperate. The fixed mold assembly (3) includes a fixed mold core (19) and a fixed mold shell (25) that is configured to cooperate with it on the outside. The moving mold assembly (4) includes a moving mold core (27) and a moving mold shell (15) that is configured to cooperate with it on the outside. After the fixed mold core (19) and the moving mold core (27) are closed, a cavity matching the shape of the vehicle frame is formed. A lower cooling cavity is formed between the moving mold core (27) and the moving mold shell (15), and an upper cooling cavity is formed between the moving mold core (27) and the moving mold shell (15). An upper lifting assembly for driving the moving mold core (27) to rise and fall is also installed on the outside of the moving mold shell (15), and a lower lifting assembly for driving the fixed mold core (19) to rise and fall is also installed on the outside of the fixed mold shell (25). A gating pipe (5) is installed in the middle of the moving mold core (27), and the gating pipe (5) slides out from the middle of the top of the moving mold shell (15). The guide support assembly is also installed on the outside of the moving mold shell (15) and the fixed mold shell (25) and is connected to the column (8). The guide support assembly is used to slide guide the moving mold shell (15) and fix the fixed mold shell (25). Drive mechanism (7), the top plate (6) is equipped with a drive mechanism (7) for driving the moving mold assembly (4) to rise and fall. The base (1) is also equipped with a water supply cooling mechanism for cooling the upper cooling chamber and the lower cooling chamber; the upper cooling chamber and the lower cooling chamber are respectively equipped with heat pipe assemblies (29) embedded in the moving mold core (27) and the fixed mold core (19). The upper lifting assembly and the lower lifting assembly have the same structure; The lifting assembly includes an opening and closing telescopic cylinder (16), an outer frame one (17) and an outer frame two (18). The inner wall of the moving mold shell (15) is clearance-fitted with the outer side of the moving mold core (27). The outer bottom of the moving mold shell (15) and the moving mold core (27) are respectively fixed with outer frame one (17) and outer frame two (18). Multiple opening and closing telescopic cylinders (16) are also evenly distributed and fixed on the outer frame one (17). The telescopic spindle end of the opening and closing telescopic cylinder (16) is fixedly connected to the outer frame two (18). A sealing ring is also provided on the side of the outer frame one (17) and the outer frame two (18) that are close to each other; The water supply and cooling mechanism includes a cooling tank (2), a first cooling component (9), and a second cooling component (20); The cooling box (2) is fixed on the base (1), and a flow equalization cooling component (26) is installed on the inner side of the cooling box (2). The cooling assembly 1 (9) includes a water outlet pipe 1 (10), a water supply pipe 1 (11) and a water supply pump 1 (12). The water supply pump 1 (12) is fixed on the cooling box (2) and its inlet is connected to the bottom of the inner cavity of the cooling box (2). The outlet of the water supply pump 1 (12) is connected to the front left end of the lower cooling cavity through the water supply pipe 1 (11). One end of the water outlet pipe 1 (10) is connected to the front left end of the upper cooling cavity, and the other end of the water outlet pipe 1 (10) is connected to the top of the inner cavity of the cooling box (2). The second cooling component (20) includes a second water pump (21), a second water pipe (22), and a second water outlet pipe (23). The second water pump (21) is fixed on the cooling box (2) and its inlet is connected to the bottom of the inner cavity of the cooling box (2). The outlet of the second water pump (21) is connected to the rear right end of the upper cooling cavity through the second water pipe (22). One end of the second water outlet pipe (23) is connected to the rear right end of the lower cooling cavity, and the other end of the second water outlet pipe (23) is connected to the top of the inner cavity of the cooling box (2). The top of the moving mold core (27) and the bottom of the fixed mold core (19) are respectively provided with multiple slots (28), the heat pipe assembly (29) is installed in the slots (28), and the other end of the heat pipe assembly (29) is elastically abutted against the top of the moving mold shell (15) or the bottom of the fixed mold shell (25). The heat pipe assembly (29) includes a shell (33), which adopts a closed cylindrical structure. The inner wall of the shell (33) is provided with a spiral plate (34), and the inner side of the shell (33) is filled with a liquid working fluid. A positioning head (32) is fixed in the middle of one end of the cylindrical shell (33), and an elastic element (30) is sleeved on the positioning head (32). The cylindrical shell (33) is installed on the groove (28), and the end of the elastic element (30) away from the positioning head (32) elastically abuts against the top of the moving mold shell (15) or the bottom of the fixed mold shell (25). Multiple heat transfer columns (31) are also circumferentially fixed on the outer side of the positioning head (32) at the end of the cylindrical shell (33). The heat transfer columns (31) are set through the end of the cylindrical shell (33), and the end of the heat transfer column (31) away from the cylindrical shell (33) is inclined away from the positioning head (32). When the cylindrical shell (33) is installed in the groove (28), the heat transfer column (31) is located in the upper cooling chamber or the lower cooling chamber.

2. The integrated casting and molding device for vehicle frames according to claim 1, characterized in that, The guide support assembly includes a side support plate (13) fixed to the outside of the moving mold shell (15) and the fixed mold shell (25). The side support plate (13) is slidably connected to the column (8). The side support plate (13) installed on the outside of the fixed mold shell (25) is also provided with a fastening bolt (14). The fastening bolt (14) is used to lock and fix the side support plate (13) installed on the outside of the fixed mold shell (25) to the column (8).

3. The integrated casting and molding device for vehicle frames according to claim 1, characterized in that, The drive mechanism (7) includes hydraulic cylinders fixed at the four corners of the top plate (6), and the telescopic spindle end of the hydraulic cylinder is fixedly connected to the moving mold shell (15) of the moving mold assembly (4).

4. The integrated casting and molding device for vehicle frames according to claim 1, characterized in that, The top of the cooling box (2) is also provided with a water inlet (24); The flow equalization cooling assembly (26) includes a flow equalization mesh plate and a plate or shell-and-tube heat exchanger fixed on the flow equalization mesh plate. The plate or shell-and-tube heat exchanger is connected to an external cold source.

5. The integrated casting and molding device for vehicle frames according to claim 1, characterized in that, The casting pipe (5) adopts an L-shaped structure and is equipped with a heating sleeve; One end of the vertical part of the casting pipe (5) is connected to the top of the inner cavity of the moving mold core (27), and the vertical part of the casting pipe (5) is also slidably connected to the collar fixed in the middle of the moving mold shell (15).

6. The integrated casting and molding device for vehicle frames according to claim 1, characterized in that, The shell (33), heat transfer column (31) and positioning head (32) are integrally formed, and the shell (33), heat transfer column (31) and positioning head (32) are made of copper alloy, aluminum alloy, stainless steel or nickel alloy. The liquid working medium is pure water, ethanol, acetone or liquid metal, and the inner cavity of the cylinder (33) is evacuated to a near-vacuum state.

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