A high-low temperature separation drainage type casting device for frozen sand mold and a using method thereof

Abstract

A kind of high-low temperature separation drainage type casting device of frozen sand mould and its using method, it belongs to the field of frozen sand mould factory casting application. Device: including low-temperature pouring device, lifting device, rotary device and refrigeration device. Method: start refrigeration device; frozen sand mould storage and fixation;Transport to pouring workshop;Start rotary device, align drainage block to ladle, start lifting device, rise frozen sand mould, make weight against frozen sand mould, tilt ladle, pour out metal liquid, through drainage block to flow to sprue, pour;Lifting device and rotary platform are used to rotate until pouring is completed. The present application greatly improves the production efficiency of frozen sand mould in factory, is used for long time transportation, storage, pouring frozen sand mould in workshop, while continuously pouring sand mould, metal liquid quickly solidifies, can produce internal quality good, size precision high castings, promotes the application and popularization of frozen sand mould in factory. The device of the present application is suitable for high-low temperature separation drainage type casting of frozen sand mould.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of frozen sand mold factory casting, and particularly relates to a frozen sand mold high-low temperature separation drainage type casting device and a use method thereof. BACKGROUND

[0002] The energy and resource consumption of the casting industry is very large, the wood mold / metal mold mold preparation casting mold manufacturing cycle is long, the production process is multiple, and the development of finished products is expensive. In the factory workshop, a pouring ladle is generally used for pouring. In the pouring workshop with low degree of mechanization, multiple workers are often needed to pour the metal liquid from the pouring ladle into a pouring material bucket or to lift the pouring ladle, and then the material bucket or the pouring ladle is lifted to the sand mold area for manual pouring. There are problems such as high labor intensity and poor working environment, especially in the metal liquid transfer process, the splashing of the metal liquid has a great threat to the physical safety of the workers, and the operation technology of the workers also has a great requirement. The casting pouring process urgently needs a more mechanized and automated production mode.

[0003] The frozen sand mold for casting refers to a new type of casting mold using water as a binder and various sand particles as refractory aggregates. The frozen sand mold is prepared by freezing water at low temperature, and then the rapid forming of the frozen sand mold is realized through digital moldless casting forming technology based on the principle of cutting forming. However, during pouring, the frozen sand mold is exposed to room temperature or even high temperature environment in the pouring workshop for a long time. A large amount of ice crystal bonding bridge of the frozen sand mold melts, the strength, hardness and yield of the frozen sand mold are quickly lost, and the temperature of the metal liquid is too high. A large amount of water in the frozen sand mold evaporates during pouring, the strength of the sand mold decreases, and the cavity is easily deformed, which is not conducive to the filling of the metal liquid in the casting mold. Especially in the actual large-scale pouring process in the factory workshop, a large number of frozen sand molds are stored and waiting for pouring for a long time, and the sand molds are prematurely collapsed. Therefore, it is necessary to compensate for the deficiency of the easy collapse of the frozen sand mold during pouring, to ensure the smooth filling of the high-temperature metal liquid in the cavity of the frozen sand mold, to prevent the "one-touch collapse" phenomenon during pouring, to ensure the clear profile and accurate size of the casting, and to be a new direction to be broken through in the practical application of the green casting industry. SUMMARY

[0004] The present application aims to solve the above-mentioned problems existing in the prior art frozen sand mold, and provides a frozen sand mold high-low temperature separation drainage type casting device and a use method thereof. The deficiency of the easy collapse of the frozen sand mold during pouring is compensated for, the strength of the frozen sand mold is prevented from being insufficient due to melting during storage and pouring, the degree of automation of the factory pouring workshop is improved, the physical and mental health of the workers is protected, and the metal liquid filling stability is improved.

[0005] A frozen sand mold high-low temperature separation drainage type casting device, which comprises a low-temperature pouring device, a lifting device, a rotating device and a refrigeration device.

[0006] The low-temperature pouring device comprises a bottom plate and a heat insulation cover; industrial casters are arranged at the lower end of the four corners of the bottom plate respectively, and the heat insulation cover is arranged at the upper part of the bottom plate; the heat insulation cover and the rotary platform form a low-temperature chamber;

[0007] A movable baffle is arranged at the top of the low-temperature chamber, the baffle is pulled open, and a flow guide block is arranged at a position close to the ladle through a sliding groove, and the installation position of the flow guide block can be adjusted according to the position of the pouring hole.

[0008] Further, the lifting device comprises a fixed bottom plate, a guide column, a lifting motor and a ball screw assembly; the guide column is installed on the fixed bottom plate, and the guide column cooperates with a flange guide base to guide the movement of the lower lifting platform; the lifting motor is connected with the ball screw assembly through a synchronous belt to provide lifting power for the lower lifting platform; a support column is fixedly installed on the lower lifting platform, and an upper lifting platform is fixedly installed at the upper end of the support column to support the upper lifting platform to move up and down.

[0009] Further, the rotary device comprises a rotary drive, a drive motor and a rotary platform; the drive motor provides power for the rotation of the rotary drive, the rotary platform is fixed on the rotary drive through bolts, and the movement of the rotary drive drives the rotary platform to rotate; the rotary platform is provided with sliding bushings around the periphery; the rotary platform is uniformly arranged with sand mold stations around the rotation shaft.

[0010] Further, the refrigeration device comprises a compressor and a refrigeration cycle circuit; the compressor is arranged on the bottom plate, and the refrigeration cycle circuit is arranged on the inner wall of the low-temperature chamber.

[0011] Further, the low-temperature chamber is filled with heat insulation materials between the inner and outer walls.

[0012] Further, the refrigeration device adopts refrigerant cycle refrigeration to ensure that the temperature of the low-temperature chamber is maintained at-20℃ to 0℃.

[0013] Further, a positioning magnetic base is arranged on the sand mold station, and the frozen sand mold is fixed on the sand mold station through the positioning magnetic base and adjusted to be located directly below the baffle.

[0014] Further, the bottom of the pressure iron is provided with a layer of buffer rubber; the size and position of the pressure iron are determined according to the frozen sand mold to be poured, and the pressure iron is internally provided with space for the pouring hole and the riser for subsequent pouring.

[0015] Further, the outlet of the flow guide block is in the shape of a teapot spout.

[0016] The use method of the above-mentioned frozen sand mold high-low temperature separation flow guide type casting device is realized by the following steps:

[0017] I. Start the refrigeration device, and pre-cool the temperature of the low-temperature chamber to-20℃ to 0℃;

[0018] II. The frozen sand mold is fixed on the sand mold station by positioning the magnetic base and the sprue is adjusted to be located directly below the baffle;

[0019] III. The rotating platform is rotated to the next sand mold station, and step II is repeated until all the sand mold stations are stored and fixed with the frozen sand mold;

[0020] IV. The frozen sand mold high-low temperature separation drainage casting device is transported to the pouring workshop, the baffle is opened, the drainage block is installed, and the sprue of the frozen sand mold is ensured to be directly below the gap formed by the baffle and the drainage block, which is the pouring station;

[0021] V. The rotating device is started, the drainage block is aligned with the ladle, the lifting device is started, the frozen sand mold is raised, the frozen sand mold is pressed against the frozen sand mold, and then the ladle is tilted to pour the metal liquid, which is guided to the sprue through the drainage block, and pouring is performed;

[0022] VI. When a frozen sand mold is poured and filled, the lifting device is lowered, the frozen sand mold is loosened, the rotating platform is rotated by a corresponding angle, and the next frozen sand mold to be poured is rotated to the pouring station for pouring, and the process is repeated until all the frozen sand molds are poured.

[0023] The beneficial effects of the present application are:

[0024] 1. The present application uses a low-temperature chamber to store multiple frozen sand molds in the preparation workshop, and uses the device to transport the frozen sand mold to the ladle in the pouring workshop to complete the pouring, cooling and solidification of the frozen sand mold casting. The present application realizes continuous pouring of multiple frozen sand molds in one smelting process, improves the production efficiency of the casting, and protects the mechanical properties of the sand mold by keeping the frozen sand mold in a low-temperature environment. The phenomenon of premature collapse of a large number of frozen sand molds during long waiting time from the sand mold preparation workshop to the pouring workshop is reduced.

[0025] 2. The present application uses a drainage block in cooperation with a baffle to pre-position the frozen sand mold in the pouring station, ensuring that the metal liquid poured from the ladle can be smoothly guided to the sprue. After pouring is completed, the device is lifted and rotated to move the next frozen sand mold to the pouring station for continuous pouring, realizing efficient pouring of the sand mold. The frozen sand mold is always in a low-temperature environment during pouring, and multiple frozen sand molds can be continuously poured and solidified under the actual conditions of the factory in a low-temperature environment, greatly improving the production efficiency of the frozen sand mold in the factory application.

[0026] 3. The present application is suitable for actual pouring process in the factory, and is used for transporting, storing and pouring frozen sand molds in the workshop for a long time. The metal liquid is quickly solidified during continuous pouring of the sand mold, and a casting with good internal quality and high dimensional accuracy can be produced, promoting the application and promotion of the frozen sand mold in the factory.

[0027] The device of the present application is suitable for high-low temperature separation and flow type casting of frozen sand mold. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 Fig. 1 is a structural schematic diagram of the device for high-low temperature separation and flow type casting of frozen sand mold in the present application;

[0029] Figure 2 Fig. 4 is a structural schematic diagram of the lifting device in the present application;

[0030] Figure 3 Fig. 5 is a structural schematic diagram of the rotating device in the present application;

[0031] Figure 4 Fig. 6 is a partial top view of the flow guide in the present application;

[0032] Figure 5 Fig. 7 is a front view of the flow guide block in the present application;

[0033] Figure 6 Fig. 8 is a side view of the flow guide block in the present application;

[0034] Figure 7 Fig. 9 is a top view of the flow guide block in the present application;

[0035] Figure 8 Fig. 10 is a partial sectional view of the positioning and compaction of the frozen sand mold in the present application;

[0036] Figures 1-8 The reference numerals are as follows: 1-industrial caster, 2-bottom plate, 3-heat insulation cover, 4-lifting device, 5-rotating device, 6-sliding bushing, 7-frozen sand mold, 8-gate, 9-feeder, 10-low-temperature chamber, 11-pressing iron plate, 12-flow guide block, 13-ladle, 14-compressor, 15-baffle, 16-positioning magnetic base, 41-fixed bottom plate, 42-synchronous belt, 43-lifting motor, 44-guide column, 45-flange guide base, 46-lower lifting platform, 47-upper lifting platform, 48-ball screw assembly, 49-supporting column, 51-driving motor, 52-rotating drive, 53-rotating platform. DETAILED DESCRIPTION

[0037] The technical solution of the present application is not limited to the following specific embodiments, but also includes any combination of the specific embodiments.

[0038] Specific embodiment one: combined with Figures 1-8 Fig. 1, the present embodiment is a device for high-low temperature separation and flow type casting of frozen sand mold, which comprises a low-temperature pouring device, a lifting device 4, a rotating device 5 and a refrigeration device.

[0039] The low-temperature pouring device comprises a bottom plate 2 and a heat shield 3; the bottom plate 2 is provided with industrial casters 1 at four corners of the lower end, and the heat shield 3 is arranged at the upper part of the bottom plate 2; the heat shield 3 and the rotary platform 53 form a low-temperature chamber 10;

[0040] A movable baffle 15 is arranged at the top of the low-temperature chamber 10, the baffle 15 is pulled open, and a flow guide block 12 is arranged at a position close to the pouring ladle 13 through a sliding groove, and the flow guide block 12 can be adjusted and arranged according to the position of the pouring gate 8.

[0041] In the embodiment, the industrial casters 1 are used to drive the whole device to move and self-lock.

[0042] The low-temperature chamber 10 is used to store the frozen sand mold 7 to be poured.

[0043] The molten metal in the pouring ladle 13 can flow into the pouring gate 8 of the frozen sand mold 7 along the flow guide groove of the flow guide block 12, so that the frozen sand mold 7 can be poured with high-temperature metal liquid in a low-temperature environment.

[0044] In the embodiment, when one frozen sand mold 7 is poured and filled, the rotary platform is rotated by a corresponding angle, and the next frozen sand mold 7 to be poured is rotated to the pouring station for pouring, and the process is repeated until all the frozen sand molds 7 are poured.

[0045] Specific embodiment two: the difference between the embodiment and the specific embodiment one is that the lifting device 4 comprises a fixed bottom plate 41, a guide column 44, a lifting motor 43 and a ball screw assembly 48; the guide column 44 is installed on the fixed bottom plate 41, and the guide column 44 cooperates with the flange guide seat 45 to guide the movement of the lower lifting platform 46; the lifting motor 43 is connected with the ball screw assembly 48 through the synchronous belt 42, and provides lifting power for the lower lifting platform 46; the lower lifting platform 46 is fixedly installed with a supporting column 49, and the supporting column 49 is fixedly installed with an upper lifting platform 47 at the upper end, and the upper lifting platform 47 moves up and down. The others are the same as the specific embodiment one.

[0046] Specific embodiment three: the difference between the embodiment and the specific embodiment one is that the rotary device 5 comprises a rotary drive 52, a drive motor 51 and a rotary platform 53; the drive motor 51 provides power for the rotation of the rotary drive 52, the rotary platform 53 is fixed on the rotary drive 52 through bolts, and the movement of the rotary drive 52 drives the rotary platform 53 to rotate; the rotary platform 53 is provided with sliding bushings 6 around the periphery; the rotary platform 53 is uniformly arranged around the rotation shaft direction. The others are the same as the specific embodiment one.

[0047] Specific implementation four: the difference between this embodiment and the third embodiment is that the refrigeration device includes a compressor 14 and a refrigeration cycle circuit; the compressor 14 is arranged on the bottom plate 2, and the refrigeration cycle circuit is arranged on the inner wall of the low-temperature chamber 10. The rest is the same as the third embodiment.

[0048] Specific implementation five: the difference between this embodiment and the fourth embodiment is that the inner and outer walls of the low-temperature chamber 10 are filled with thermal insulation materials. The rest is the same as the fourth embodiment.

[0049] The thermal insulation material in this embodiment is preferably thermal insulation cotton or aluminum silicate cotton.

[0050] Specific implementation six: the difference between this embodiment and the fourth embodiment is that the refrigeration device uses refrigerant cycle refrigeration to ensure that the temperature of the low-temperature chamber 10 is maintained at-20℃ to 0℃. The rest is the same as the fourth embodiment.

[0051] Specific implementation seven: the difference between this embodiment and the sixth embodiment is that the bottom of the pressing iron 11 has a layer of buffer rubber; the size and position of the pressing iron 11 are determined according to the cold sand mold 7 to be poured, and the pressing iron 11 has a space inside for the subsequent pouring of the sprue 8 and the riser 9. The rest is the same as the sixth embodiment.

[0052] Specific implementation eight: the difference between this embodiment and the sixth embodiment is that a positioning magnetic seat 16 is arranged on the sand mold station, and the cold sand mold 7 is fixed on the sand mold station through the positioning magnetic seat 16 and adjusted so that the sprue 8 is located directly below the baffle 15. The rest is the same as the sixth embodiment.

[0053] Specific implementation nine: the difference between this embodiment and the first embodiment is that the outlet of the drainage block 12 is in the shape of a teapot spout. The rest is the same as the first embodiment.

[0054] The outlet of the drainage block 12 in this embodiment is in the shape of a teapot spout, which is to ensure that the direction of the metal liquid flowing out of the drainage groove is concentrated and the flow rate is stable.

[0055] Specific implementation ten: a method for using the cold sand mold high-low temperature separation drainage type casting device according to the present application, which is realized by the following steps:

[0056] I. Turn on the refrigeration device, and pre-cool the temperature of the low-temperature chamber 10 to-20℃ to 0℃;

[0057] II. Fix the cold sand mold 7 on the sand mold station through the positioning magnetic seat 16 and adjust the sprue 8 to be located directly below the baffle 15;

[0058] III. The rotary platform 53 rotates to the next sand mold station, and steps II is repeated until all sand mold stations are completed for storing and fixing the frozen sand molds 7.

[0059] IV. The frozen sand mold high-low temperature separation and drainage type casting device is transported to the pouring workshop, the baffle 15 is opened, the drainage block 12 is installed, and it is ensured that the sprue 8 of the frozen sand mold 7 is directly below the gap formed by the baffle 15 and the drainage block 12, and this station is the pouring station.

[0060] V. The rotary device 5 is started, the drainage block 12 is aligned with the ladle 13, the lifting device 4 is started, the frozen sand mold 7 is raised, the pressing iron 11 is pressed against the frozen sand mold 7, then the ladle 13 is tilted, the metal liquid is poured out, and the metal liquid is drained to the sprue 8 through the drainage block 12 to perform pouring.

[0061] VI. When one frozen sand mold 7 is completed, the lifting device 4 is lowered, the pressing iron 11 is loosened, the rotary platform 53 is rotated by a corresponding angle, and the next frozen sand mold 7 to be poured is rotated to the pouring station to perform pouring, and the process is repeated until all frozen sand molds 7 are completed.

[0062] In the embodiment, the frozen sand mold high-low temperature separation and drainage type casting device performs steps I, II and III in the frozen sand mold preparation workshop.

[0063] In the embodiment, a low-temperature environment is provided for storing batches of frozen sand molds between the frozen sand mold preparation workshop and the factory pouring workshop, and the low-temperature storage of the frozen sand molds and the factory pouring are integrated.

[0064] In step V of the embodiment, the pressing iron 11 is pressed against the frozen sand mold 7 to prevent problems such as fire running and mispositioning of the frozen sand mold 7.

[0065] Specific embodiment eleven: different from the specific embodiment ten, the frozen sand mold 7 in step II is prepared by directly numerically controlling the cutting of the frozen sand blank by the digital frozen sand mold forming machine. The other parts are the same as those in the specific embodiment ten.

[0066] The beneficial effects of the application are verified by the following examples:

[0067] Example:

[0068] In combination Figures 1-8 As shown in the drawings, a frozen sand mold high-low temperature separation and drainage type casting device includes a low-temperature pouring device, a lifting device 4, a rotary device 5 and a refrigeration device.

[0069] The low-temperature pouring device includes a bottom plate 2 and a heat shield 3; industrial casters 1 are arranged at the lower ends of four corners of the bottom plate 2, and the heat shield 3 is arranged at the upper part of the bottom plate 2; the heat shield 3 and the rotary platform 53 form a low-temperature chamber 10.

[0070] The low-temperature chamber 10 top inside is connected by bolt installation pressure iron 11; the movable baffle 15 is arranged on the low-temperature chamber 10 top, the baffle 15 is pulled open and the drainage block 12 is installed through the chute in the position close to the ladle 13, the drainage block 12 can be adjusted and installed according to the position of the pouring gate 8.

[0071] The lifting device 4 includes a fixed base plate 41, a guide column 44, a lifting motor 43 and a ball screw assembly 48; the guide column 44 is installed on the fixed base plate 41, and the guide column 44 cooperates with the flange guide seat 45 to guide the movement of the lower lifting platform 46; the lifting motor 43 is connected with the ball screw assembly 48 through the synchronous belt 42, and provides lifting power for the lower lifting platform 46; the lower lifting platform 46 is fixedly installed with a support column 49, and the upper end of the support column 49 is fixedly installed with the upper lifting platform 47, and the support column 49 supports the upper and lower movement of the upper lifting platform 47.

[0072] The rotary device 5 includes a rotary drive 52, a drive motor 51 and a rotary platform 53; the drive motor 51 provides power for the rotation of the rotary drive 52, and the rotary platform 53 is fixed on the rotary drive 52 by bolts, and the movement of the rotary drive 52 drives the rotation of the rotary platform 53; the rotary platform 53 is provided with a sliding bushing 6 around the periphery; the rotary platform 53 is uniformly arranged around the rotation axis direction.

[0073] The refrigeration device includes a compressor 14 and a refrigeration cycle circuit; the compressor 14 is arranged on the bottom plate 2, and the refrigeration cycle circuit is arranged on the inner wall of the low-temperature chamber 10.

[0074] The low-temperature chamber 10 is filled with heat insulation materials between the inner and outer walls.

[0075] The refrigeration device adopts refrigerant cycle refrigeration to ensure that the temperature of the low-temperature chamber 10 is maintained at-20℃-0℃.

[0076] The sand mold station is provided with a positioning magnetic base 16, and the frozen sand mold 7 is fixed on the sand mold station through the positioning magnetic base 16 and the pouring gate 8 is adjusted to be located directly below the baffle 15.

[0077] The pressure iron 11 has a layer of buffer rubber at the bottom; the size and position of the pressure iron 11 are determined according to the frozen sand mold 7 to be poured, and the space for the pouring gate 8 and the riser 9 is left in the pressure iron 11 for subsequent pouring.

[0078] The outlet of the drainage block 12 is in the shape of a teapot spout.

[0079] The use method of the above-mentioned frozen sand mold high and low temperature separation drainage type casting device is realized by the following steps:

[0080] I. Start the refrigeration device, pre-cool the temperature of the low-temperature chamber 10 to -10℃;

[0081] II. Fix the frozen sand mold 7 on the sand mold station through the positioning magnetic base 16 and adjust the sprue 8 to be located directly below the baffle 15;

[0082] III. Rotate the rotating platform 53 to the next sand mold station, repeat step II until all the frozen sand molds 7 are stored and fixed in the sand mold stations;

[0083] IV. Transport the frozen sand mold high-low temperature separation and drainage type casting device to the pouring workshop, open the baffle 15, install the drainage block 12, and ensure that the sprue 8 of the frozen sand mold 7 is located directly below the gap formed by the baffle 15 and the drainage block 12. This station is the pouring station;

[0084] V. Start the rotating device 5, align the drainage block 12 with the ladle 13, start the lifting device 4, lift the frozen sand mold 7, make the press iron 11 abut against the frozen sand mold 7, then tilt the ladle 13 to pour out the metal liquid, which is drained to the sprue 8 through the drainage block 12, and then pouring is performed;

[0085] VI. When one frozen sand mold 7 is poured and filled, the lifting device 4 is lowered, the press iron 11 is loosened, the rotating platform 53 is rotated by a corresponding angle, and the next frozen sand mold 7 to be poured is rotated to the pouring station for pouring. Repeat the process until all the frozen sand molds 7 are poured.

[0086] In step V of the embodiment, the press iron 11 abuts against the frozen sand mold 7, which aims to prevent the frozen sand mold 7 from running fire, mispositioning and other problems.

[0087] After pouring is completed in the embodiment, the profile of the cooled and solidified castings is clear, the internal quality is good, and the dimensional accuracy is high.

[0088] The casting device in the embodiment is used to realize continuous pouring of multiple frozen sand molds in one smelting, improve the production efficiency of castings, and protect the mechanical properties of the sand mold by keeping the frozen sand mold in a low-temperature environment. The phenomenon of early collapse of a large number of frozen sand molds in a long waiting period from the sand mold preparation workshop to the pouring workshop is reduced. The use of the drainage block ensures that the metal liquid poured out of the ladle can be smoothly drained to the sprue. After pouring is completed, the device is lifted and rotated to move the next frozen sand mold to the pouring station for continuous pouring, realizing efficient pouring of the sand mold. The frozen sand mold is kept in a low-temperature environment during the pouring process, realizing rapid solidification and forming of the castings, and greatly improving the production efficiency of the frozen sand mold in the factory application.

[0089] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit the protection scope of the present application. Those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A cryogenic sand mold high and low temperature separation and diversion casting device, characterized in that... It includes a cryogenic casting device, a lifting device (4), a rotary device (5), and a refrigeration device; The low-temperature casting device includes a base plate (2) and a heat insulation cover (3); industrial casters (1) are respectively installed at the four corners of the lower end of the base plate (2), and the heat insulation cover (3) is installed on the upper part of the base plate (2); the heat insulation cover (3) and the rotating platform (53) form a low-temperature chamber (10). The pressure iron (11) is installed on the inner side of the top of the low temperature chamber (10) by bolts; a movable baffle (15) is set on the top of the low temperature chamber (10), the baffle (15) is pulled open and a guide block (12) is installed in the position near the pouring ladle (13) by a sliding groove, and the installation position of the guide block (12) can be adjusted according to the position of the pouring gate (8); The lifting device (4) includes a fixed base plate (41), a guide column (44), a lifting motor (43), and a ball screw assembly (48); the guide column (44) is mounted on the fixed base plate (41), and the guide column (44) cooperates with the flange guide seat (45) to guide the movement of the lower lifting platform (46); the lifting motor (43) is connected to the ball screw assembly (48) through a synchronous belt (42) to provide lifting power for the lower lifting platform (46); the lower lifting platform (46) is fixedly mounted with a support column (49), and the upper lifting platform (47) is fixedly mounted on the upper end of the support column (49) to support the upper lifting platform (47) to move up and down; The rotary device (5) includes a rotary drive (52), a drive motor (51), and a rotary platform (53); the drive motor (51) provides power for the rotation of the rotary drive (52), the rotary platform (53) is fixed to the rotary drive (52) by bolts, and the movement of the rotary drive (52) drives the rotary platform (53) to rotate; the rotary platform (53) is equipped with sliding bushings (6) around its periphery; the rotary platform (53) has sand mold stations evenly arranged around the rotation axis; The refrigeration device includes a compressor (14) and a refrigeration cycle circuit; the compressor (14) is mounted on the base plate (2), and the refrigeration cycle circuit is mounted on the inner wall of the low-temperature chamber (10); The space between the inner and outer walls of the low-temperature chamber (10) is filled with thermal insulation material; The sand mold station is equipped with a positioning magnetic seat (16). The frozen sand mold (7) is fixed on the sand mold station by the positioning magnetic seat (16) and the gate (8) is adjusted to be located directly below the baffle (15). The bottom of the pressure iron (11) has a layer of buffer rubber; the size and position of the pressure iron (11) are determined according to the frozen sand mold (7) to be poured, and the space inside the pressure iron (11) is reserved for the pouring gate (8) and riser (9) for subsequent pouring; The outlet of the drainage block (12) is shaped like a teapot spout; The use of the aforementioned high- and low-temperature separation and diversion casting device for frozen sand molds is achieved through the following steps:

1. Turn on the refrigeration device to pre-cool the temperature of the low-temperature chamber (10) to -20℃~0℃; 2. Fix the frozen sand mold (7) on the sand mold station using the positioning magnetic seat (16) and adjust the gate (8) to be directly below the baffle (15); 3. Rotate the rotary platform (53) to the next sand mold station and repeat step 2 until all sand mold stations have completed the storage and fixing of frozen sand molds (7); 4. Transport the high and low temperature separation and diversion casting device of the frozen sand mold to the casting workshop, open the baffle (15), install the diversion block (12), and ensure that the gate (8) of the frozen sand mold (7) is directly below the gap formed by the baffle (15) and the diversion block (12). This station is the casting station.

5. Start the rotary device (5), align the guide block (12) with the ladle (13), start the lifting device (4), raise the frozen sand mold (7), so that the pressure iron (11) holds the frozen sand mold (7), then tilt the ladle (13), pour out the molten metal, and guide it through the guide block (12) to the gate (8) for pouring; 6. After a frozen sand mold (7) is filled, the lifting device (4) descends, the pressure iron (11) is released, and the rotating platform (53) rotates at the corresponding angle. The next frozen sand mold (7) to be poured is then rotated to the pouring station for pouring. This process is repeated until all frozen sand molds (7) have been poured.

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