A thin-walled multi-runner aluminum alloy liquid cooling shell high-pressure die casting device

Abstract

This invention relates to the field of aluminum alloy die casting technology, and discloses a high-pressure die casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell. The device includes a die casting assembly, a liquid cooling assembly on the die casting assembly, and an auxiliary cooling mechanism on the liquid cooling assembly. The liquid cooling assembly includes liquid cooling channels formed within the die casting assembly. A connecting pipe is fixedly connected between the outlets of the liquid cooling channels, allowing the liquid cooling channels to form a complete unidirectional liquid channel within the fixed mold. The connecting pipe is located outside the fixed mold. The auxiliary cooling mechanism includes a heat exchange sleeve, which is movably fitted onto the outside of the connecting pipe. The heat exchange sleeve has uniformly distributed water cooling channels. This device allows coolant to intermittently enter and exit the mold, providing auxiliary cooling for the coolant. Furthermore, the device can capture and uniformly clean some magnetic impurities carried by the coolant.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy die casting technology, and more specifically to a high-pressure die casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell. Background Technology

[0002] Aluminum alloy die casting equipment is a device that precisely shapes molten aluminum alloy into complex parts with high precision and high performance. The device uses the pressure of a hydraulic system to inject liquid aluminum alloy into the cavity of a precision mold in a short time. After the casting cools and solidifies in the mold, complex aluminum alloy parts can be processed. However, existing aluminum alloy die-casting equipment still has the following shortcomings in practical use; Firstly, in the current aluminum alloy die casting equipment, the cooling of the casting in the cavity mainly relies on the liquid cooling channels opened inside the mold. However, when the coolant enters the mold, it will quickly exchange heat with the mold, and the temperature of the coolant will rise, thus affecting the cooling effect of the coolant in the subsequent channels. That is, the current aluminum alloy die casting equipment does not have the function of auxiliary cooling of the coolant, which makes its cooling effect on the die casting mold not uniform and sufficient. Secondly, in the existing aluminum alloy die casting equipment, when using coolant, the coolant often carries foreign iron filings and impurities, as well as some wear debris that falls off from the mold flow channel. As these impurities and debris flow with the coolant, they can easily scratch the liquid cooling flow channel of the mold. With the accumulation of impurities and debris, the flow channel can also easily become blocked. Therefore, in order to solve the above problems, it is necessary to provide a high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell, so as to solve the problems existing in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell, comprising a die-casting assembly, a liquid-cooling assembly provided on the die-casting assembly, and an auxiliary cooling mechanism provided on the liquid-cooling assembly; The liquid cooling assembly includes a liquid cooling channel, which is formed in the die casting assembly. A connecting pipe is fixedly connected between the outlets of the liquid cooling channel. The connecting pipe enables the liquid cooling channel to form a complete unidirectional liquid channel in the fixed mold. The connecting pipe is located on the outside of the fixed mold. The auxiliary cooling mechanism includes a heat exchange tube sleeve, which is movably sleeved on the outside of the connecting pipe. The heat exchange tube sleeve is provided with evenly distributed water cooling channels. A magnetizing device is also provided on the outside of the heat exchange tube sleeve. The heat exchange tube sleeve is magnetized when it is moved into the magnetizing device and demagnetized when it is moved out of the magnetizing device. The heat exchange tube sleeve is made of a magnetothermal alloy, and the connecting tube is made of a non-magnetic material.

[0005] Furthermore, the die-casting assembly includes a back plate, a fixed mold is fixedly installed at one end of the front side of the back plate, a core is provided inside the fixed mold, guide pillars are fixedly connected at the four corners of the fixed mold, an end plate is fixedly connected to the end of the shaft of the guide pillar, a moving mold is movably sleeved on the shaft of the guide pillar, a cavity is opened inside the moving mold, the moving mold is located between the fixed mold and the end plate, a telescopic injection tube is installed on the end plate, and the output end of the telescopic injection tube is connected to the moving mold and communicates with its cavity.

[0006] Furthermore, the moving mold is fixedly mounted with a slider, the back plate is provided with a slide rail, the slider is movably sleeved in the slide rail, a mold closing screw is movably sleeved in the slide rail, the outer end of the shaft of the mold closing screw is movably sleeved with the end plate, the mold closing screw and the slider are threadedly driven together, a mold closing motor is fixedly mounted on the outer side of the end plate, and the drive shaft of the mold closing motor is fixedly connected to the shaft of the mold closing screw.

[0007] Furthermore, the liquid cooling channel is formed in the fixed mold, the inlet of the unidirectional liquid channel formed by the liquid cooling channel is fixedly connected to the injection pipe, and the outlet of the unidirectional liquid channel formed by the liquid cooling channel is fixedly connected to the return pipe.

[0008] Furthermore, a cold water tank is fixedly installed on the back of the back plate, the supply end of the cold water tank is fixedly connected to the injection pipe, and the return end of the cold water tank is fixedly connected to the return pipe.

[0009] Furthermore, the auxiliary cooling mechanism includes a fixing plate, which is fixedly installed on the outer end of the fixed mold. There are two fixing plates, which are respectively fixedly sleeved to both ends of the horizontal section of the connecting pipe. The bottom of the horizontal section of the connecting pipe is provided with a chip collection groove. A heat exchange tube sleeve is movably sleeved on the outer side of the horizontal section of the connecting pipe and the chip collection groove. The heat exchange tube sleeve is made of MnCoGe-based alloy, and the chip collection groove is made of non-magnetic material.

[0010] Furthermore, a water inlet pipe is fixedly connected to one end of the chip collection trough, and a water outlet pipe is fixedly connected to the other end of the chip collection trough. The water inlet pipe and the water outlet pipe are connected to the internal space of the chip collection trough, and valves are installed on both the water inlet pipe and the water outlet pipe.

[0011] Furthermore, a lead screw is movably sleeved between the bottom ends of the fixed plate, and a threaded hole is opened on the heat exchange tube sleeve. The lead screw is threadedly sleeved with the heat exchange tube sleeve. A heat exchange motor is fixedly installed at the outer end of the fixed plate, and the drive shaft of the heat exchange motor is fixedly connected to the lead screw. An installation plate is also fixedly installed at the outer end of the fixed mold. A magnetizing device is fixedly installed at the bottom of the installation plate. The magnetizing device is composed of a solenoid and is located at one end of the horizontal section of the connecting pipe. The magnetizing device covers the heat exchange tube sleeve located there. A power supply is fixedly installed on the installation plate, and the power supply supplies power to the magnetizing device.

[0012] Furthermore, a base plate is fixedly installed at the bottom of the back plate, a water supply tank is fixedly installed on one side of the upper surface of the base plate, and a liquid collection tank is fixedly installed on the other side of the upper surface of the base plate. A flushing pump is installed inside the water supply tank, the water inlet pipe is connected to the water outlet of the flushing pump, and the water outlet pipe is connected to the liquid collection tank.

[0013] Furthermore, the water supply tank is equipped with a cooling pump inside. The outlet of the cooling pump is fixedly connected to a common pipe. The common pipe is fixedly connected to a flexible hose corresponding to the water cooling channel. The flexible hose is fixedly connected to one end of the water cooling channel, and the other end of the water cooling channel is connected to the liquid collection tank through a pipe.

[0014] The technical effects and advantages of this invention are as follows: The die-casting process begins, and the coolant flows inside the connecting pipe. At this time, the heat exchange motor drives the lead screw to rotate, causing the heat exchange tube sleeve to leave the internal magnetic field area of ​​the magnetization device and move to the other end of the connecting pipe. The heat exchange tube sleeve, which is separated from the magnetic field, enters the demagnetization state, and the magnetic moment changes from ordered to disordered. Based on the adiabatic demagnetization magnetocaloric effect, the temperature of the heat exchange tube sleeve itself drops rapidly and significantly, thereby absorbing heat and cooling the high-temperature coolant flowing inside the connecting pipe that is attached to its inner wall, thus realizing its auxiliary cooling function. During the magnetization and demagnetization stages of the heat exchanger tube sleeve, the magnetic field generated by the magnetization device always covers the inside of the connecting pipe. When the coolant carries foreign iron filings and some magnetic wear debris, they are attracted to this area. After the die casting is completed, the circulation pump driving the coolant is turned off, and the coolant in the connecting pipe stops flowing. At this time, the power supply to the magnetization device is cut off, and the magnetic field provided by the magnetization device disappears. The iron filings and magnetic wear debris attracted to this area inside the connecting pipe will slide down and accumulate in the chip collection tank. Then, the valves on the inlet and outlet water pipes are opened, and the flushing pump injects water from the water supply tank into the chip collection tank. The impurities and debris flow along the water flow through the outlet water pipe into the collection tank for collection. The coolant cleaning function of the device is achieved in the above manner. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the die-casting component structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the fixed mold of the present invention; Figure 4 This is a schematic diagram of the liquid cooling component structure of the present invention; Figure 5 This is a schematic diagram of the heat exchanger sleeve structure of the present invention; Figure 6 This is a schematic diagram of the structure at the lead screw of the present invention; Figure 7 This is a schematic diagram of the magnetization device of the present invention; Figure 8 This is a schematic cross-sectional view of the water supply tank of the present invention.

[0016] The attached diagram is labeled as follows: 1. Die-casting assembly; 101. Back plate; 102. Fixed mold; 103. Guide pillar; 104. End plate; 105. Moving mold; 106. Telescopic injection tube; 107. Slider; 108. Slide rail; 109. Mold closing screw; 110. Mold closing motor; 2. Liquid cooling assembly; 201. Liquid cooling channel; 202. Injection pipe; 203. Connecting pipe; 204. Return pipe; 205. Cold water tank; 3. Auxiliary... 301. Cooling mechanism; 302. Fixing plate; 303. Chip collection trough; 304. Heat exchange tube sleeve; 305. Water cooling channel; 306. Water inlet pipe; 307. Water outlet pipe; 308. Valve; 309. Lead screw; 310. Heat exchange motor; 311. Mounting plate; 312. Magnetizing device; 313. Power supply; 314. Base plate; 315. Water supply tank; 316. Liquid collection tank; 317. Common connection pipe; 318. Hose. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The thin-walled multi-channel aluminum alloy liquid-cooled shell high-pressure die-casting device involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Reference Figure 1 The present invention provides a high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell, including a die-casting assembly 1, a liquid-cooling assembly 2 on the die-casting assembly 1, and an auxiliary cooling mechanism 3 on the liquid-cooling assembly 2. When the device is in use, after the die-casting component 1 closes the mold, liquid aluminum alloy is injected into the cavity of the die-casting component 1. The liquid cooling component 2 cools the die-casting component 1, and the liquid aluminum alloy is cooled and shaped in the mold, thereby producing the required aluminum alloy parts. The auxiliary cooling mechanism 3 provides auxiliary cooling for the liquid cooling component 2 and performs secondary cooling on the coolant flowing out of the mold, so that it can cool the mold more fully and evenly.

[0019] Reference Figure 2 The die-casting assembly 1 includes a back plate 101. A fixed mold 102 is fixedly installed at one end of the front side of the back plate 101. A core is provided inside the fixed mold 102. Guide pillars 103 are fixedly connected at the four corners of the fixed mold 102. An end plate 104 is fixedly connected to the end of the shaft of the guide pillar 103. A movable mold 105 is movably sleeved on the shaft of the guide pillar 103. A cavity is opened inside the movable mold 105. The movable mold 105 is located between the fixed mold 102 and the end plate 104. A telescopic injection tube 106 is installed on the end plate 104. The output end of the telescopic injection tube 106 is connected to the movable mold 105 and communicates with its cavity. The moving mold 105 is fixedly mounted with a slider 107. A slide rail 108 is provided on the back plate 101. The slider 107 is movably sleeved in the slide rail 108. A mold closing screw 109 is movably sleeved in the slide rail 108. The outer end of the shaft of the mold closing screw 109 is movably sleeved with the end plate 104. The mold closing screw 109 and the slider 107 are threadedly sleeved. A mold closing motor 110 is fixedly mounted on the outer side of the end plate 104. The drive shaft of the mold closing motor 110 is fixedly connected to the shaft of the mold closing screw 109. When the device is in use, the mold closing motor 110 drives the mold closing screw 109 to rotate, thereby driving the moving mold 105 to close with the fixed mold 102. Then, liquid aluminum alloy is injected into the cavity after mold closing through the retractable injection tube 106. Since the die casting method of aluminum alloy is a technical means known to those skilled in the art, its specific mold structure and working principle are not described in detail in this embodiment.

[0020] Reference Figure 3 and Figure 4 The liquid cooling assembly 2 includes a liquid cooling channel 201, which is formed in the fixed mold 102. The inlet of the liquid cooling channel 201 is fixedly connected to a liquid injection pipe 202, and the outlets of the liquid cooling channel 201 are fixedly connected to a connecting pipe 203. The connecting pipe 203 makes the liquid cooling channel 201 form a complete unidirectional liquid channel in the fixed mold 102. The connecting pipe 203 is located on the outside of the fixed mold 102, and the outlet of the liquid cooling channel 201 is fixedly connected to a return pipe 204. Both the connecting pipe 203 and the chip collection groove 302 are made of non-magnetic materials; A cold water tank 205 is fixedly installed on the back of the back plate 101. The liquid supply end of the cold water tank 205 is fixedly connected to the liquid injection pipe 202, and the liquid return end of the cold water tank 205 is fixedly connected to the liquid return pipe 204. The internal structure of the moving mold 105 can also use the same water-cooling structure as the fixed mold 102, which will not be described in detail here; When the device is in use, when the fixed mold 102 and the moving mold 105 are closed and die casting is performed, the cold water tank 205 injects coolant into the liquid cooling channel 201 through the injection pipe 202. When the coolant flows in the liquid cooling channel 201, it will intermittently flow out from the fixed mold 102 into the connecting pipe 203, and then flow back into the liquid cooling channel 201 through the connecting pipe 203, and finally flow back to the cold water tank 205 through the return pipe 204. The connecting pipe 203 located outside the fixed mold 102 allows the coolant flowing through it to exchange heat with the external environment, thereby cooling down the coolant that initially enters the fixed mold 102 for heat exchange. The coolant that re-enters the fixed mold 102 from the connecting pipe 203 continues to cool down the mold. In this way, the coolant flowing through the mold can be cooled down to a certain extent. It should be noted that the cold water tank 205 consists of a compression refrigeration assembly and a circulation pump. Since this device is a conventional technical means used by those skilled in the art, its internal structure will not be described in detail in this embodiment.

[0021] Reference Figures 5-8 The auxiliary cooling mechanism 3 includes a fixing plate 301, which is fixedly installed on the outer end of the fixed mold 102. There are two fixing plates 301, which are fixedly sleeved to both ends of the horizontal pipe section of the connecting pipe 203. The bottom of the horizontal pipe section of the connecting pipe 203 is provided with a chip collection groove 302. A heat exchange tube sleeve 303 is movably sleeved on the outer side of the horizontal pipe section of the connecting pipe 203 and the chip collection groove 302. The heat exchange tube sleeve 303 is made of MnCoGe based alloy and has uniformly distributed water cooling channels 304 on it. One end of the chip collection trough 302 is fixedly connected to a water inlet pipe 305, and the other end of the chip collection trough 302 is fixedly connected to a water outlet pipe 306. The water inlet pipe 305 and the water outlet pipe 306 are connected to the internal space of the chip collection trough 302. A valve 307 is installed on both the water inlet pipe 305 and the water outlet pipe 306. A lead screw 308 is movably sleeved between the bottom ends of the fixed plate 301. A threaded hole is opened on the heat exchange tube sleeve 303. The lead screw 308 is threadedly sleeved with the heat exchange tube sleeve 303. A heat exchange motor 309 is fixedly installed on the outer end of the fixed plate 301. The drive shaft of the heat exchange motor 309 is fixedly connected to the lead screw 308. An installation plate 310 is also fixedly installed on the outer end of the fixed mold 102. A magnetizing device 311 is fixedly installed on the bottom of the installation plate 310. The magnetizing device 311 is composed of a solenoid. The magnetizing device 311 is located at one end of the horizontal section of the connecting pipe 203. The magnetizing device 311 covers the heat exchange tube sleeve 303 located there. A power supply 312 is fixedly installed on the installation plate 310. The power supply 312 supplies power to the magnetizing device 311. A base plate 313 is fixedly installed at the bottom of the back plate 101. A water supply tank 314 is fixedly installed on one side of the upper surface of the base plate 313, and a liquid collection tank 315 is fixedly installed on the other side of the upper surface of the base plate 313. A flushing pump (not shown in the figure) is installed inside the water supply tank 314. The inlet pipe 305 is connected to the outlet end of the flushing pump, and the outlet pipe 306 is connected to the liquid collection tank 315. A cooling pump (not shown in the figure) is also installed inside the water supply tank 314. A common pipe 316 is fixedly connected to the outlet end of the cooling pump. A hose 317 corresponding to the water cooling channel 304 is fixedly connected to the common pipe 316. The hose 317 is fixedly connected to one end of the water cooling channel 304, and the other end of the water cooling channel 304 is connected to the liquid collection tank 315 through a pipe. The above-mentioned cooling structure can also be used for other connecting pipe sections 203 outside the fixed mold 102 and the moving mold 105; When the device is in use, before the die casting operation, the valves 307 on the inlet pipe 305 and the outlet pipe 306 are closed. The power supply 312 supplies power to the magnetizing device 311, which generates an axial uniform magnetic field inside, thereby magnetizing the heat exchange tube sleeve 303 located there. The heat exchange tube sleeve 303 is made of magnetothermal alloy, so the magnetic moments are arranged in an orderly manner during the magnetization process, and the magnetic working fluid stores heat and heats up as a whole. At this time, the cooling pump injects the cooling water in the water supply tank 314 into the water cooling channel 304 through the hose 317 to force the heated heat exchange tube sleeve 303 to cool down and solidify, thus completing the storage of magnetothermal potential energy. Then, the die-casting process begins. The coolant flows inside the connecting pipe 203. At this time, the heat exchange motor 309 drives the lead screw 308 to rotate, causing the heat exchange sleeve 303 to leave the internal magnetic field region of the magnetization device 311 and move to the other end of the connecting pipe 203. The heat exchange sleeve 303, which is separated from the magnetic field, enters the demagnetization state. The magnetic moment changes from ordered to disordered. Based on the adiabatic demagnetization magnetothermal effect, the temperature of the heat exchange sleeve 303 itself drops rapidly and significantly, thereby absorbing heat and cooling the high-temperature coolant flowing inside the connecting pipe 203 that is attached to its inner wall, thus realizing its auxiliary cooling function. During the magnetization and demagnetization stages of the heat exchanger sleeve 303, the magnetic field generated by the magnetization device 311 always covers the inside of the connecting pipe 203. When the coolant carries foreign iron filings and some magnetic wear debris, they are attracted to this area. After the die-casting work is completed, the circulation pump driving the coolant is turned off, and the coolant in the connecting pipe 203 stops flowing. At this time, the power supply 312 is cut off to the magnetization device 311, and the magnetic field provided by the magnetization device 311 disappears. The iron filings and magnetic wear debris attracted to the inside of the connecting pipe 203 will slide down and accumulate in the chip collection tank 302. At this time, the valves 307 on the inlet pipe 305 and the outlet pipe 306 are opened, and the flushing pump injects the water in the water supply tank 314 into the chip collection tank 302. The impurities and debris flow along the water flow through the outlet pipe 306 into the collection tank 315 for collection. The coolant cleaning function of the device is achieved in the above manner.

[0022] The working principle of this invention is as follows: Before the die casting process, the valves 307 on the inlet pipe 305 and the outlet pipe 306 are closed. The power supply 312 supplies power to the magnetizing device 311, which generates an axial uniform magnetic field inside, thereby magnetizing the heat exchange tube sleeve 303 located there. The heat exchange tube sleeve 303 is made of magnetothermal alloy, so the magnetic moments are arranged in an orderly manner during the magnetization process, and the magnetic working fluid stores heat and heats up as a whole. At this time, the cooling pump injects the cooling water in the water supply tank 314 into the water cooling channel 304 through the hose 317 to force the heated heat exchange tube sleeve 303 to cool down and solidify, thus completing the storage of magnetothermal potential energy. Then, the die-casting process begins. The coolant flows inside the connecting pipe 203. At this time, the heat exchange motor 309 drives the lead screw 308 to rotate, causing the heat exchange sleeve 303 to leave the internal magnetic field region of the magnetization device 311 and move to the other end of the connecting pipe 203. The heat exchange sleeve 303, which is separated from the magnetic field, enters the demagnetization state. The magnetic moment changes from ordered to disordered. Based on the adiabatic demagnetization magnetothermal effect, the temperature of the heat exchange sleeve 303 itself drops rapidly and significantly, thereby absorbing heat and cooling the high-temperature coolant flowing inside the connecting pipe 203 that is attached to its inner wall, thus realizing its auxiliary cooling function. During the magnetization and demagnetization stages of the heat exchanger sleeve 303, the magnetic field generated by the magnetization device 311 always covers the inside of the connecting pipe 203. When the coolant carries foreign iron filings and some magnetic wear debris, they are attracted to this area. After the die-casting work is completed, the circulation pump driving the coolant is turned off, and the coolant in the connecting pipe 203 stops flowing. At this time, the power supply 312 is cut off to the magnetization device 311, and the magnetic field provided by the magnetization device 311 disappears. The iron filings and magnetic wear debris attracted to the inside of the connecting pipe 203 will slide down and accumulate in the chip collection tank 302. At this time, the valves 307 on the inlet pipe 305 and the outlet pipe 306 are opened, and the flushing pump injects the water in the water supply tank 314 into the chip collection tank 302. The impurities and debris flow along the water flow through the outlet pipe 306 into the collection tank 315 for collection. The coolant cleaning function of the device is achieved in the above manner.

[0023] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell, comprising a die-casting assembly (1), wherein a liquid-cooling assembly (2) is provided on the die-casting assembly (1), characterized in that: The liquid cooling assembly (2) is provided with an auxiliary cooling mechanism (3); The liquid cooling assembly (2) includes a liquid cooling channel (201), which is formed in the die casting assembly (1). A connecting pipe (203) is fixedly connected between the outlets of the liquid cooling channel (201). The connecting pipe (203) makes the liquid cooling channel (201) form a complete unidirectional liquid channel in the fixed mold (102). The connecting pipe (203) is located on the outside of the fixed mold (102). The auxiliary cooling mechanism (3) includes a heat exchange tube sleeve (303), which is movably sleeved on the outside of the connecting pipe (203). The heat exchange tube sleeve (303) is provided with uniformly distributed water cooling channels (304). The outside of the heat exchange tube sleeve (303) is also provided with a magnetizing device (311). The heat exchange tube sleeve (303) is moved into the magnetizing device (311) to be magnetized, and demagnetized after being moved out of the magnetizing device (311). The heat exchange sleeve (303) is made of magnetothermal alloy, and the connecting pipe (203) is made of non-magnetic material.

2. The high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell according to claim 1, characterized in that: The die-casting assembly (1) includes a back plate (101), a fixed mold (102) is fixedly installed at one end of the front side of the back plate (101), a core is provided inside the fixed mold (102), guide pillars (103) are fixedly connected at the four corners of the fixed mold (102), an end plate (104) is fixedly connected to the end of the shaft of the guide pillar (103), a moving mold (105) is movably sleeved on the shaft of the guide pillar (103), a cavity is opened inside the moving mold (105), the moving mold (105) is located between the fixed mold (102) and the end plate (104), a telescopic injection tube (106) is installed on the end plate (104), and the output end of the telescopic injection tube (106) is connected to the moving mold (105) and communicates with its cavity.

3. The high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell according to claim 2, characterized in that: The moving mold (105) is fixedly mounted with a slider (107), and a slide rail (108) is provided on the back plate (101). The slider (107) is movably sleeved in the slide rail (108), and a mold closing screw (109) is movably sleeved in the slide rail (108). The outer end of the shaft of the mold closing screw (109) is movably sleeved with the end plate (104). The mold closing screw (109) and the slider (107) are threadedly sleeved. A mold closing motor (110) is fixedly mounted on the outer side of the end plate (104), and the drive shaft of the mold closing motor (110) is fixedly connected to the shaft of the mold closing screw (109).

4. The high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell according to claim 3, characterized in that: The liquid cooling channel (201) is formed in the fixed mold (102). The inlet of the unidirectional liquid channel formed by the liquid cooling channel (201) is fixedly connected to the injection pipe (202), and the outlet of the unidirectional liquid channel formed by the liquid cooling channel (201) is fixedly connected to the return pipe (204).

5. The high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell according to claim 4, characterized in that: A cold water tank (205) is fixedly installed on the back of the back plate (101). The liquid supply end of the cold water tank (205) is fixedly connected to the liquid injection pipe (202), and the liquid return end of the cold water tank (205) is fixedly connected to the liquid return pipe (204).

6. The high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell according to claim 5, characterized in that: The auxiliary cooling mechanism (3) includes a fixing plate (301), which is fixedly installed on the outer end of the fixed mold (102). There are two fixing plates (301) and they are respectively fixedly sleeved to both ends of the horizontal pipe section of the connecting pipe (203). The bottom of the horizontal pipe section of the connecting pipe (203) is provided with a chip collection groove (302). The horizontal pipe section of the connecting pipe (203) and the outer side of the chip collection groove (302) are movably sleeved with a heat exchange tube sleeve (303). The heat exchange tube sleeve (303) is made of MnCoGe based alloy, and the chip collection groove (302) is made of non-magnetic material.

7. The high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell according to claim 6, characterized in that: One end of the chip collection trough (302) is fixedly connected to a water inlet pipe (305), and the other end of the chip collection trough (302) is fixedly connected to a water outlet pipe (306). The water inlet pipe (305) and the water outlet pipe (306) are connected to the internal space of the chip collection trough (302), and valves (307) are installed on both the water inlet pipe (305) and the water outlet pipe (306).

8. The high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell according to claim 7, characterized in that: A lead screw (308) is movably sleeved between the bottom ends of the fixed plate (301). A threaded hole is provided on the heat exchange tube sleeve (303). The lead screw (308) is threadedly sleeved with the heat exchange tube sleeve (303). A heat exchange motor (309) is fixedly installed on the outer end of the fixed plate (301). The drive shaft of the heat exchange motor (309) is fixedly connected to the lead screw (308). An mounting plate (31) is also fixedly installed on the outer end of the fixed mold (102). 0), a magnetizing device (311) is fixedly installed at the bottom of the mounting plate (310). The magnetizing device (311) is composed of a solenoid. The magnetizing device (311) is located at one end of the horizontal pipe section of the connecting pipe (203). The magnetizing device (311) covers the heat exchange tube sleeve (303) located there. A power supply (312) is fixedly installed on the mounting plate (310). The power supply (312) supplies power to the magnetizing device (311).

9. A high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell according to claim 8, characterized in that: A base plate (313) is fixedly installed at the bottom of the back plate (101). A water supply tank (314) is fixedly installed on one side of the upper surface of the base plate (313). A liquid collection tank (315) is fixedly installed on the other side of the upper surface of the base plate (313). A flushing pump is provided inside the water supply tank (314). The water inlet pipe (305) is connected to the water outlet of the flushing pump. The water outlet pipe (306) is connected to the liquid collection tank (315).

10. A high-pressure die-casting device for a thin-walled multi-channel aluminum alloy liquid-cooled shell according to claim 9, characterized in that: The water supply tank (314) is also equipped with a cooling pump. The outlet end of the cooling pump is fixedly connected to a common pipe (316). The common pipe (316) is fixedly connected to a hose (317) corresponding to the water cooling channel (304). The hose (317) is fixedly connected to one end of the water cooling channel (304). The other end of the water cooling channel (304) is connected to the liquid collection tank (315) through a pipe.

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