Cooling structure of large-scale die-casting die frame and die frame

Abstract

The application relates to the technical field of die-casting mould frames, in particular to a cooling structure of a large die-casting mould frame and the mould frame, which comprises a body, a circular cavity one is arranged at one end of the top surface of the body, a circular cavity two is arranged at the other end of the top surface of the body, a communication channel is arranged between the top inner walls of the circular cavity one and the circular cavity two, and a heat dissipation channel is arranged in the body. In the application, when the mould is opened and the product is demoulded, the air pump is started, the airflow enters the heat dissipation channel through the switching assembly one, the liquid in the heat dissipation channel is pushed out, the residual liquid in the heat dissipation channel is discharged and the air is introduced, the liquid flows into the communication channel, and the air introduced into the heat dissipation channel is slowly cooled, so that the 'heat preservation' of the mould frame after demoulding is realized, the temperature of the mould frame is kept within a certain range, the control of the mould temperature is facilitated, and the cooling requirements of the mould frame under different actions are met.

Description

Technical Field

[0001] This invention relates to the field of die casting mold frame technology, and specifically to a cooling structure and mold frame for a large die casting mold frame. Background Technology

[0002] When using die-casting molds for production, the temperature of the mold needs to be controlled. The optimal mold temperature during production depends on the structure, size, and complexity of the casting. Generally speaking, the normal production temperature for aluminum alloy die-casting molds is 180~250℃, and for magnesium alloys it is 220~280℃. The mold temperature needs to be stabilized within a certain range to avoid excessive temperature differences. The mold temperature is generally controlled by adjusting the temperature of the heat transfer medium and by adding heat insulation plates or heating rods. The heat transfer medium is generally water or oil. The mold frame is a part of the mold and is composed of various steel plates and parts, forming the skeleton of the entire mold.

[0003] Existing large mold frame cooling systems mostly rely on internal cooling water channels and external cooling water circulation systems. Generally, when the mold is closed and molten metal is injected, the solution causes the mold frame temperature to rise rapidly, requiring rapid heat dissipation, such as increasing the flow rate of cooling water. However, after the mold is opened and demolded, the mold frame loses its external heat source. To maintain the mold frame temperature, cooling needs to be reduced or stopped. Although existing mold frame cooling structures can slow down the cooling of the mold frame by reducing the flow rate of the coolant or increasing the initial temperature of the coolant, the extended residence time of the coolant in the cooling water channels or the high initial temperature can cause the coolant to boil and generate high-temperature steam in the mold frame. Furthermore, since the cooling water channels are generally designed to be winding and tortuous, the steam is difficult to expel quickly, which can easily cause a sharp increase in pressure within the cooling water channels, causing deformation in the weaker parts of the channels. Secondly, the cooling water is difficult to absorb heat after boiling, which leads to a further increase in the cooling rate between the front and rear parts of the cooling water channels, which can easily cause a significant temperature difference in the mold frame, affecting subsequent production. Therefore, the existing mold frame cooling structures are not very effective in controlling the temperature after the mold is opened. Summary of the Invention

[0004] To overcome the aforementioned technical problems, the present invention aims to provide a cooling structure and mold frame for a large die-casting mold frame. By setting up switching component one and switching component two, when the mold is opened and the product is demolded, the air pump is started, and the airflow enters the heat dissipation channel through switching component one, pushing out the liquid in the heat dissipation channel, discharging the residual liquid in the heat dissipation channel and introducing air, while the liquid flows into the connecting channel. At the same time, the air introduced into the heat dissipation channel slowly dissipates heat and cools the mold frame, thereby achieving "heat preservation" of the mold frame after demolding, keeping the mold frame temperature within a certain range, facilitating the control of the mold temperature, and thus meeting the cooling requirements of the mold frame under different actions.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A cooling structure for a large die-casting mold frame includes a main body. A circular cavity 1 is formed at one end of the top surface of the main body, and a circular cavity 2 is formed at the other end of the top surface of the main body. A connecting channel is formed between the inner walls of the top surfaces of the first and second cavities. A heat dissipation channel is formed inside the main body. One end of the heat dissipation channel is connected to the bottom of the first cavity, and the other end of the heat dissipation channel is connected to a third cavity formed between the third cavity and one side of the bottom surface of the second cavity. A switching component 2 is installed inside the second cavity, and the inner wall of the first cavity is also equipped with the switching component 1. An installation pipe 1 is formed on one side of the bottom surface of the first cavity, and another installation pipe 2 is formed on the other side of the bottom surface of the second cavity. When the mold is opened and the product is demolded, the gas is activated. The pump and airflow enter the heat dissipation channel through the switching component, pushing out the liquid in the channel, discharging the residual liquid and introducing air. The liquid then flows into the connecting channel. Discharging the residual liquid prevents it from absorbing too much heat and boiling and evaporating in the heat dissipation channel. At the same time, the air introduced into the heat dissipation channel slowly dissipates heat and cools the mold frame, thus achieving "heat preservation" of the mold frame after demolding. This prevents the mold frame from cooling too quickly after demolding and keeps the mold frame temperature within a certain range, which is convenient for mold temperature control. When faster cooling is needed when closing the mold, the air pump is turned off, and the liquid passes through the heat dissipation channel again for rapid cooling, thereby meeting the cooling requirements of the mold frame under different actions. The middle part of the heat dissipation channel is serpentine and meanders within the body.

[0007] Furthermore, the switching component includes a movable tube with its bottom end closed. The movable tube is slidably connected to the inner wall of the circular cavity. A limiting ring is fixedly connected to the inner wall of the bottom end of the circular cavity. An upper circular hole is opened at the top of one side of the inner wall of the movable tube, and a lower circular hole is opened at the bottom of one side of the inner wall of the movable tube. An air inlet pipe is fixedly sleeved on the inner wall of the installation pipe. Cooling water is introduced into the circular cavity through the interface pipe. The liquid pushes the movable tube downward, causing the movable tube to move down until it is blocked by the limiting ring. At this time, the lower circular hole is connected to one end of the heat dissipation channel, and the upper circular hole is misaligned with the connecting channel, so that one end of the connecting channel is closed by the movable tube, and the liquid enters the heat dissipation channel.

[0008] Furthermore, the height positions of one end of the heat dissipation channel, the limiting ring, and the first installation pipe decrease sequentially. The distance between the upper and lower circular holes is less than the distance between one end of the heat dissipation channel and the connecting channel. The air pump supplies air to the bottom of the first cavity through the air inlet pipe. Under the action of air pressure, the moving pipe is pushed upward, so that the upper circular hole is aligned and connected with the connecting channel. The moving pipe moves to above one end of the heat dissipation channel, so that the gas enters the heat dissipation channel.

[0009] Furthermore, the inner wall of the connecting channel is fixedly fitted with a heat insulation pipe to reduce heat exchange between the liquid and the body within the connecting channel.

[0010] Furthermore, the switching component two includes a fixed tube, which is fixedly sleeved with the second circular cavity. A valve core is rotatably connected to the inner wall of the fixed tube. A through hole is opened at the bottom end of the outer wall of the valve core. A positioning hole is opened at the top end of the outer wall of the fixed tube corresponding to the position of the connecting channel. A drainage channel one is opened at the top end of the outer wall of the valve core corresponding to the position of the positioning hole. A drainage channel two is opened at the middle position of the outer wall of the valve core. The top ends of both drainage channel two and drainage channel one are connected to the top end of the valve core. An exhaust pipe two is fixedly sleeved on the inner wall of the second installation pipe. One end of the exhaust pipe two is connected and fixedly connected to the fixed tube. A drive module is fixedly connected to the inner wall of the third circular cavity. The drive module is used to drive the valve core to rotate. The bottom end of the drainage channel two is offset from one end of the through hole. When the core rotates, the upper through hole is sealed by the valve core. The bottom end of the drainage channel one is connected to the connecting channel, and the lower through hole is connected to the exhaust pipe through the through hole. Gas and residual liquid in the connecting pipe are discharged through the exhaust pipe, allowing the liquid to flow out through the heat insulation pipe, reducing heat dissipation to the body. At the same time, residual liquid in the heat dissipation channel is discharged and air is introduced. Discharging residual liquid is to prevent the residual liquid from absorbing too much heat in the heat dissipation channel and thus boiling and evaporating. At the same time, the air introduced into the heat dissipation channel provides slow heat dissipation and cooling, thereby achieving "heat preservation" of the mold frame after demolding. This prevents the mold frame from cooling too quickly after demolding, keeping the mold frame temperature within a certain range, which facilitates mold temperature control. When faster cooling is needed when closing the mold, the air pump is turned off, and the liquid passes through the heat dissipation channel again for rapid cooling, thus meeting the cooling requirements of the mold frame under different actions.

[0011] Furthermore, the drive module includes a connecting pipe, which is fixedly connected to the inner wall of the three-dimensional cavity. One end of the connecting pipe is connected to the other end of the heat dissipation channel. An upper through hole is opened on the top side of the outer wall of the other end of the connecting pipe, and a lower through hole is opened on the bottom side of the outer wall of the other end of the connecting pipe. The upper through hole corresponds to the bottom end of the second drainage channel. Both the upper and lower through holes are fixedly connected to the outer wall of the fixed pipe. A shaft is installed inside the connecting pipe. One end of the shaft passes through the other end of the connecting pipe and one side wall of the fixed pipe in sequence, and the shaft is rotatably connected to both the connecting pipe and the fixed pipe. An annular notch is opened in the middle of the outer wall of the valve core. A bevel gear one is fixedly sleeved on the top of the annular inner wall of the annular notch. A bevel gear two is fixedly sleeved on one end of the shaft. The bevel gear one and the bevel gear two mesh with each other. An air bladder is fixedly connected to the outer wall of the other end of the shaft. When the liquid level in the connecting pipe rises, the rising liquid level in the connecting pipe causes the air bladder to float, thereby causing the shaft to rotate. The rotation of the shaft drives the valve core to rotate through the bevel gear two and the bevel gear one.

[0012] Furthermore, a torsion spring is fixedly sleeved at the bottom of the valve core, one end of the torsion spring is fixedly connected to the inner wall of the fixed tube, and a limiting plate is fixedly connected to the bottom side of the inner wall of the connecting tube. The limiting plate is used to limit the airbag. The torsion spring assists the valve core to rotate, and at the same time the limiting plate blocks the airbag to prevent the airbag from returning to the bottom of the shaft, which facilitates the subsequent floating of the airbag.

[0013] Furthermore, the inner wall of the top of the first circular cavity is fixedly connected to an interface pipe, which facilitates the connection between the first circular cavity and the outside world.

[0014] The present invention also provides a large die-casting mold frame, including the cooling structure described above.

[0015] The beneficial effects of this invention are:

[0016] 1. By setting switching component one and switching component two, when the mold is opened and the product is demolded, the air pump is started. The airflow enters the heat dissipation channel through switching component one, pushes out the liquid in the heat dissipation channel, discharges the residual liquid in the heat dissipation channel and introduces air. The liquid then flows into the connecting channel, thereby discharging the residual liquid in the heat dissipation channel and preventing the residual liquid from absorbing too much heat in the heat dissipation channel and boiling and evaporating. At the same time, the air introduced into the heat dissipation channel slowly dissipates heat and cools the mold frame, thereby achieving "heat preservation" of the mold frame after demolding. This prevents the mold frame from cooling too quickly after demolding and keeps the mold frame temperature within a certain range, which is convenient for mold temperature control. When the mold needs to be closed and cooling needs to be accelerated, the air pump is turned off, and the liquid passes through the heat dissipation channel again for rapid cooling, thereby meeting the cooling requirements of the mold frame under different actions.

[0017] 2. By switching the configuration of component two, after the gas enters the heat dissipation channel, the residual liquid in the heat dissipation channel is pushed out from the other end of the heat dissipation channel until the airflow enters the connecting pipe. This causes the liquid in the connecting pipe to be discharged from the upper through hole, and the liquid level in the connecting pipe drops, causing the airbag to drive the shaft to rotate, thereby causing the valve core to rotate. The upper through hole is closed by the valve core, and the bottom end of the drainage channel one is connected to the connecting channel. The lower through hole is connected to the exhaust pipe through the through hole. The switching of the connection state of the top of the fixed pipe of the heat dissipation channel is realized by the change of the liquid level when air or water is passed through the connecting pipe, which facilitates the discharge of liquid or gas in the heat dissipation channel. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of one end of the main body in this invention;

[0021] Figure 3 This is a schematic diagram of the switching component in this invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the other end of the main body in this invention;

[0023] Figure 5 This is a schematic diagram of the structure of the switching component two in this invention;

[0024] Figure 6 This is a schematic diagram of the drive module structure in this invention;

[0025] Figure 7 This is a schematic diagram of the valve core structure in this invention.

[0026] In the diagram: 100, main body; 110, circular cavity one; 120, heat dissipation channel; 130, connecting channel; 131, heat insulation pipe; 140, interface pipe; 150, installation pipe one; 160, installation pipe two; 170, circular cavity two; 180, circular cavity three; 200, switching component one; 210, moving pipe; 211, lower circular hole; 212, upper circular hole; 220, air inlet pipe; 230, limiting ring; 300, switching component two; 310. Fixed pipe; 311. Positioning hole; 320. Valve core; 321. Ring notch; 322. Through hole; 323. Drainage channel one; 324. Drainage channel two; 325. Bevel gear one; 330. Exhaust pipe; 340. Torsion spring; 350. Drive module; 351. Connecting pipe; 352. Shaft; 353. Airbag; 354. Limiting plate; 355. Upper through hole; 356. Lower through hole; 357. Bevel gear two. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-7As shown, a cooling structure for a large die-casting mold frame includes a body 100. A circular cavity 110 is formed at one end of the top surface of the body 100, and a circular cavity 170 is formed at the other end of the top surface of the body 100. A connecting channel 130 is formed between the inner walls of the top of the circular cavities 110 and 170. A heat dissipation channel 120 is formed inside the body 100. One end of the heat dissipation channel 120 is connected to the bottom of the circular cavity 110, and the other end of the heat dissipation channel 120 is connected to a circular cavity 180 formed between the bottom of the circular cavity 170 and a third circular cavity 180. A switching component 300 is disposed within the second circular cavity 170. A switching component 200 is disposed on the inner wall of the first circular cavity 110. An installation pipe 150 is formed on one side of the bottom of the first circular cavity 110, and an installation pipe 160 is formed on the other side of the bottom of the second circular cavity 170. When the opening... After the product is demolded, the air pump is started, and the airflow enters the heat dissipation channel 120 through the switching component 200, pushing out the liquid in the heat dissipation channel 120, draining the residual liquid in the heat dissipation channel 120 and introducing air. The liquid then flows into the connecting channel 130. The discharge of residual liquid is to prevent the residual liquid from absorbing too much heat in the heat dissipation channel 120 and boiling and evaporating. At the same time, the air introduced into the heat dissipation channel 120 slowly dissipates heat and cools the mold frame, thereby achieving "heat preservation" of the mold frame after demolding. This prevents the mold frame from cooling too quickly after demolding and keeps the mold frame temperature within a certain range, which is convenient for mold temperature control. When the mold needs to be closed and cooling needs to be accelerated, the air pump is turned off, and the liquid passes through the heat dissipation channel 120 again for rapid cooling, thereby meeting the cooling requirements of the mold frame under different actions. The middle part of the heat dissipation channel 120 is serpentine and meanders within the body 100.

[0029] The switching component 200 includes a movable tube 210, the bottom end of which is closed. The movable tube 210 is slidably connected to the inner wall of the circular cavity 110. A limit ring 230 is fixedly connected to the inner wall of the bottom end of the circular cavity 110. An upper circular hole 212 is opened at the top of one side of the inner wall of the movable tube 210, and a lower circular hole 211 is opened at the bottom of one side of the inner wall of the movable tube 210. An air inlet pipe 220 is fixedly sleeved on the inner wall of the installation pipe 150. Cooling water is introduced into the circular cavity 110 through the interface pipe 140. The liquid flows downward and presses the movable tube 210, causing the movable tube 210 to move. The liquid moves down until it is blocked by the limiting ring 230. At this time, the lower circular hole 211 is connected to one end of the heat dissipation channel 120, and the upper circular hole 212 is misaligned with the connecting channel 130, so that one end of the connecting channel 130 is closed by the moving pipe 210. The liquid enters the heat dissipation channel 120. The height positions of one end of the heat dissipation channel 120, the limiting ring 230 and the installation pipe 150 decrease in sequence. The distance between the upper circular hole 212 and the lower circular hole 211 is less than the distance between one end of the heat dissipation channel 120 and the connecting channel 130. The air pump supplies air to the bottom end of the circular cavity 110 through the air inlet pipe 220. Under the action of air pressure, the moving pipe 210 is pushed upward, so that the upper circular hole 212 is aligned and connected with the connecting channel 130. The moving pipe 210 moves to above one end of the heat dissipation channel 120, so that the gas enters the heat dissipation channel 120. The inner wall of the connecting channel 130 is fixedly sleeved with a heat insulation pipe 131 to reduce the heat exchange between the liquid in the connecting channel 130 and the body 100.

[0030] Switching component 2 300 includes a fixed tube 310, which is fixedly sleeved with the second circular cavity 170. A valve core 320 is rotatably connected to the inner wall of the fixed tube 310. A through hole 322 is opened at the bottom end of the outer wall of the valve core 320. A positioning hole 311 is opened at the top end of the outer wall of the fixed tube 310 corresponding to the position of the connecting channel 130. A drainage channel 323 is opened at the top end of the outer wall of the valve core 320 corresponding to the position of the positioning hole 311. In the outer wall of the valve core 320... A second drainage channel 324 is provided at the intermediate position. The top ends of both the second drainage channel 324 and the first drainage channel 323 are connected to the top end of the valve core 320. An exhaust pipe 330 is fixedly sleeved on the inner wall of the second installation pipe 160. One end of the exhaust pipe 330 is connected and fixed to the fixed pipe 310. A drive module 350 is fixedly connected to the inner wall of the third cavity 180. The drive module 350 is used to drive the valve core 320 to rotate. The bottom end of the second drainage channel 324 is connected to one end of the through hole 322. With the valve core 320 rotating, the upper through hole 355 is closed by the valve core 320. The bottom end of the drainage channel 323 is connected to the connecting channel 130, and the lower through hole 356 is connected to the exhaust pipe 330 through the through hole 322. The gas and residual liquid in the connecting pipe 351 are discharged through the exhaust pipe 330, allowing the liquid to flow out through the heat insulation pipe 131, reducing heat dissipation to the body 100. At the same time, the residual liquid in the heat dissipation channel 120 is discharged and air is introduced. Discharging the residual liquid is to prevent the residual liquid from absorbing too much heat in the heat dissipation channel 120 and thus boiling and evaporating. At the same time, the air introduced into the heat dissipation channel 120 slowly dissipates heat and cools the mold frame, thereby achieving "heat preservation" of the mold frame after demolding, preventing the mold frame from cooling too quickly after demolding, and keeping the mold frame temperature within a certain range, which is convenient for mold temperature control. When the mold needs to be cooled faster after closing, the air pump is turned off, and the liquid passes through the heat dissipation channel 120 again for rapid cooling, thereby meeting the cooling requirements of the mold frame under different actions.

[0031] The drive module 350 includes a connecting pipe 351, which is fixedly connected to the inner wall of the three-dimensional cavity 180. One end of the connecting pipe 351 is connected to the other end of the heat dissipation channel 120. An upper through hole 355 is opened on the top side of the outer wall of the other end of the connecting pipe 351, and a lower through hole 356 is opened on the bottom side of the outer wall of the other end of the connecting pipe 351. The upper through hole 355 corresponds to the bottom end of the second drainage channel 324. Both the upper through hole 355 and the lower through hole 356 are connected to the outer wall of the fixed pipe 310. The sidewall is fixedly connected, and a shaft 352 is provided inside the connecting pipe 351. One end of the shaft 352 passes through the other end of the connecting pipe 351 and one sidewall of the fixed pipe 310 in sequence, and the shaft 352 is rotatably connected to both the connecting pipe 351 and the fixed pipe 310. An annular notch 321 is provided in the middle of the outer sidewall of the valve core 320. A bevel gear 325 is fixedly sleeved on the top of the annular inner sidewall of the annular notch 321, and a bevel gear 357 is fixedly sleeved on one end of the shaft 352. The first bevel gear 325 meshes with the second bevel gear 357. An air bladder 353 is fixedly connected to the outer wall of the other end of the shaft 352. When the liquid level in the connecting pipe 351 rises, the rising liquid level in the connecting pipe 351 causes the air bladder 353 to float, thereby causing the shaft 352 to rotate. The rotation of the shaft 352 drives the valve core 320 to rotate through the second bevel gear 357 and the first bevel gear 325. A torsion spring 340 is fixedly sleeved at the bottom end of the valve core 320. One end of the torsion spring 340 is fixed to the fixed... The inner wall of the tube 310 is fixedly connected to a limiting plate 354, which is fixedly connected to the bottom side of the inner wall of the connecting tube 351. The limiting plate 354 is used to limit the airbag 353. The valve core 320 is assisted to rotate by the torsion spring 340. At the same time, the limiting plate 354 blocks the airbag 353 to prevent the airbag 353 from returning to the bottom of the shaft 352, so as to facilitate the subsequent floating of the airbag 353. The inner wall of the top of the circular cavity 110 is fixedly connected to the interface tube 140, which facilitates the connection between the circular cavity 110 and the outside.

[0032] A large die-casting mold frame, including the cooling structure described above.

[0033] When the valve core 320 rotates to half its full length, both the through hole 322 and the drainage channel 324 are connected to the connecting pipe 351.

[0034] Working principle: In use, connect the external water supply pipe to the interface pipe 140, connect the external return water pipe to the top of the fixed pipe 310, and connect the air pump to the air inlet pipe 220. Cooling water is introduced into the circular cavity 110 through the interface pipe 140. The liquid flows downward and pushes the moving pipe 210, causing it to move down until it is blocked by the limiting ring 230. At this time, the lower circular hole 211 is connected to one end of the heat dissipation channel 120, and the upper circular hole 212 is misaligned with the connecting channel 130, so that one end of the connecting channel 130 is closed by the moving pipe 210. The liquid enters the heat dissipation channel 120 and then enters the connecting pipe 351, causing the liquid level in the connecting pipe 351 to rise. (Some liquid enters the exhaust pipe 330 and flows out from the lower through hole 356 and the through hole 322, but due to the high water pressure at one end of the connecting pipe 351 and the fast liquid inflow rate, the liquid level in the connecting pipe 351 continues to rise.) The upward movement causes the airbag 353 to float, which in turn causes the shaft 352 to rotate. The rotation of the shaft 352 drives the valve core 320 to rotate against the torsion spring 340 through the bevel gear 357 and bevel gear 325. The rotation of the valve core 320 causes the through hole 322 to misalign with the lower through hole 356, the bottom end of the drainage channel 1 323 to misalign with the connecting channel 130, and the bottom end of the drainage channel 2 324 to align with the upper through hole 355. This allows liquid to enter from the moving pipe 210 and flow out after passing through the heat dissipation channel 120, the connecting pipe 351, and the drainage channel 2 324 in sequence. This achieves cooling of the mold frame during mold closing and controls the temperature of the mold frame.

[0035] After the mold is opened and the product is demolded, the air pump is started. The air pump supplies air to the bottom of the cavity 110 through the air inlet pipe 220. Under the action of air pressure (air pressure is greater than water pressure), the moving pipe 210 is pushed upward, so that the upper circular hole 212 is aligned and connected with the connecting channel 130. The moving pipe 210 moves to above one end of the heat dissipation channel 120, so that the gas enters the heat dissipation channel 120 and pushes the liquid remaining in the heat dissipation channel 120 out from the other end of the heat dissipation channel 120 until the airflow enters the connecting pipe 351, so that part of the liquid in the connecting pipe 351 is discharged from the upper through hole 355. The liquid level in the connecting pipe 351 drops, thereby causing the valve core 320 to rotate. The upper through hole 355 is closed by the valve core 320, and the bottom end of the drainage channel 323 is connected to the connecting channel 130. The lower through hole 356 is open. The through-hole 322 is connected to the exhaust pipe 330. Gas and residual liquid in the connecting pipe 351 are discharged through the exhaust pipe 330, allowing the liquid to flow out through the heat insulation pipe 131, which almost no longer dissipates heat to the body 100. At the same time, the residual liquid in the heat dissipation channel 120 is discharged and air is introduced. Discharging the residual liquid is to prevent the residual liquid from absorbing too much heat in the heat dissipation channel 120 and boiling and evaporating. At the same time, the air introduced into the heat dissipation channel 120 slowly dissipates heat and cools the mold frame, thereby achieving "heat preservation" of the mold frame after demolding. This prevents the mold frame from cooling too quickly after demolding and keeps the mold frame temperature within a certain range, which is convenient for mold temperature control. When the mold needs to be cooled faster after closing, the air pump is turned off, and the liquid passes through the heat dissipation channel 120 again for rapid cooling, thereby meeting the cooling requirements of the mold frame under different actions.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A cooling structure for a large die-casting mold frame, comprising a body (100), characterized in that, The top surface of the body (100) has a first circular cavity (110) at one end and a second circular cavity (170) at the other end. A connecting channel (130) is formed between the top inner walls of the first and second circular cavities (110 and 170). A heat dissipation channel (120) is formed inside the body (100), with one end of the heat dissipation channel (120) connected to the bottom end of the first circular cavity (110). A third circular cavity (180) is opened and connected between the other end of the heat dissipation channel (120) and the bottom side of the second circular cavity (170). A second switching component (300) is provided inside the second circular cavity (170). A first switching component (200) is provided on the inner wall of the first circular cavity (110). An installation pipe (150) is opened on one side of the bottom of the first circular cavity (110). An installation pipe (160) is opened on the other side of the bottom of the second circular cavity (170). The switching component (200) includes a moving tube (210), the bottom end of which is closed. The moving tube (210) is slidably connected to the inner wall of the circular cavity (110). A limiting ring (230) is fixedly connected to the inner wall of the bottom end of the circular cavity (110). An upper circular hole (212) is opened at the top of one side of the inner wall of the moving tube (210). A lower circular hole (211) is opened at the bottom of one side of the inner wall of the moving tube (210). An air inlet pipe (220) is fixedly sleeved on the inner wall of the installation pipe (150). The height positions of one end of the heat dissipation channel (120), the limiting ring (230), and the installation pipe (150) decrease sequentially. The distance between the upper circular hole (212) and the lower circular hole (211) is less than the distance between one end of the heat dissipation channel (120) and the connecting channel (130).

2. The cooling structure for a large die-casting mold frame according to claim 1, characterized in that, The inner wall of the connecting channel (130) is fixedly fitted with a heat insulation pipe (131).

3. The cooling structure for a large die-casting mold frame according to claim 1, characterized in that, The switching component two (300) includes a fixed tube (310), which is fixedly sleeved with the circular cavity two (170). A valve core (320) is rotatably connected to the inner wall of the fixed tube (310). A through hole (322) is opened at the bottom end of the outer wall of the valve core (320). A positioning hole (311) is opened at the top end of the outer wall of the fixed tube (310) corresponding to the position of the connecting channel (130). A drainage channel one (323) is opened at the top end of the outer wall of the valve core (320) corresponding to the position of the positioning hole (311). The valve core (320) has a drainage channel 2 (324) in the middle of its outer side wall. The top ends of the drainage channel 2 (324) and the drainage channel 1 (323) are connected to the top end of the valve core (320). The inner wall of the installation pipe 2 (160) is fixedly sleeved with an exhaust pipe 2 (330). One end of the exhaust pipe 2 (330) is connected to and fixed with a fixed pipe (310). The inner wall of the circular cavity 3 (180) is fixedly connected with a drive module (350). The drive module (350) is used to drive the valve core (320) to rotate.

4. The cooling structure for a large die-casting mold frame according to claim 3, characterized in that, The drive module (350) includes a connecting pipe (351), which is fixedly connected to the inner wall of the third circular cavity (180). One end of the connecting pipe (351) is connected to the other end of the heat dissipation channel (120). An upper through hole (355) is opened on the top side of the outer wall of the other end of the connecting pipe (351), and a lower through hole (356) is opened on the bottom side of the outer wall of the other end of the connecting pipe (351). The upper through hole (355) corresponds to the bottom end of the second drainage channel (324). Both the upper through hole (355) and the lower through hole (356) are fixedly connected to the outer wall of the fixed pipe (310). A shaft is provided inside the connecting pipe (351). 352), one end of the shaft (352) passes through the other end of the connecting pipe (351) and one side wall of the fixed pipe (310) in sequence, and the shaft (352) is rotatably connected to both the connecting pipe (351) and the fixed pipe (310). An annular notch (321) is provided in the middle of the outer side wall of the valve core (320). A bevel gear one (325) is fixedly sleeved on the top of the annular inner side wall of the annular notch (321). A bevel gear two (357) is fixedly sleeved on one end of the shaft (352). The bevel gear one (325) and the bevel gear two (357) mesh with each other. An airbag (353) is fixedly connected to the outer side wall of the other end of the shaft (352).

5. The cooling structure for a large die-casting mold frame according to claim 4, characterized in that, A torsion spring (340) is fixedly sleeved at the bottom of the valve core (320). One end of the torsion spring (340) is fixedly connected to the inner wall of the fixed tube (310). A limiting plate (354) is fixedly connected to the bottom side of the inner wall of the connecting tube (351). The limiting plate (354) is used to limit the airbag (353).

6. The cooling structure for a large die-casting mold frame according to claim 1, characterized in that, The inner wall of the top end of the circular cavity (110) is fixedly connected to an interface pipe (140).

7. A large die-casting mold frame, characterized in that, Includes the cooling structure described in any one of claims 1-6.

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