Quick-cooling shaping mold for ductile iron casting

Abstract

The invention relates to the technical field of casting molds, and provides a quick-cooling shaping mold for ductile iron casting, the quick-cooling shaping mold comprises a lower mold base and an upper mold base, the upper mold base is arranged at the top end of the lower mold base, auxiliary structures are uniformly arranged in the upper mold base, and fixing structures are fixed on the outer walls of the two sides of the bottom of the upper mold base. By arranging the heat dissipation structure, a water inlet pipe is connected with a water pump to supply water into the built-in cavity of the heat dissipation base, and water can drive an impeller to rotate in the built-in cavity, so that the impeller drives blades to rotate at the bottom of the lower die base through a connecting shaft, and air quickly passes through a second heat dissipation cavity and a first heat dissipation cavity; the heat dissipation speed is increased under the action of the heat dissipation fins, water in the built-in cavity is sprayed out through the water spraying pipe, the water can be converted into water mist to enter the second heat dissipation cavity and the first heat dissipation cavity under high-speed rotation of the blades, the high-temperature heat dissipation fins make contact with the water mist to enable water to be evaporated, heat of the heat dissipation fins is taken away in an accelerated mode, and the heat dissipation speed of the device is further increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting molds, in particular to a rapid cooling and shaping mold for nodular cast iron casting. BACKGROUND

[0002] The intelligent casting island is a new type of casting production mode integrating casting process, intelligent management and green environmental protection, and the rapid cooling and shaping mold is an important component for rapid cooling and shaping of castings in the nodular cast iron casting process. In the nodular cast iron casting process, a rapid cooling and shaping mold for nodular cast iron casting is used.

[0003] To this end, a patent with the authorization announcement number CN108655345B discloses a casting mold with good positioning effect and cooling function, which comprises a base, a threaded sleeve, a first sliding block, an adjusting plate, a supporting mechanism, a fixed plate, a top plate, a first groove, a lead screw, a second sliding block, a control box, a hand wheel, a hand lever, a connecting plate, a first extension spring, a second extension spring, a first baffle, a push rod, a push plate, a fixed block, a second groove, a third extension spring, an upper mold plate, a clamping plate, a ninth extension spring, an air outlet, an ejection mechanism and a cooling mechanism. The top of the base is provided with the first groove, the top of the base is provided with the first groove, the inside of the first groove is provided with the lead screw, the threads of the two ends of the lead screw are opposite, one end of the lead screw is rotationally connected with the inner wall of the first groove, the other end of the lead screw passes through the first groove and is fixedly connected with the hand wheel, the two ends of the lead screw are symmetrically connected with the second sliding blocks, the top of each second sliding block is provided with a vertical threaded hole, and the mold has simple structure, complete functions and high use efficiency.

[0004] The casting mold in the above-mentioned cools the gas in the cooling box through the semiconductor refrigerating sheet, then delivers the generated cold air to the cooling tank through the cold air pipe to cool the mold. In the casting process, the metal liquid entering the mold cavity will cause the temperature of the mold to rise sharply. Relying on the cold air for air cooling alone will cause the mold to cool slowly. In addition, the fixing method of the casting mold is relatively complicated and inconvenient to disassemble. The mold opening and closing are time-consuming and labor-consuming, which makes the mold have low applicability in use. SUMMARY

[0005] The purpose of the present application is to provide a rapid cooling and shaping mold for nodular cast iron casting to solve the defects of slow heat dissipation and inconvenient disassembly of the existing rapid cooling and shaping mold for nodular cast iron casting.

[0006] In order to solve the above technical problems, the present application provides the following technical scheme: a rapid cooling and shaping mold for nodular cast iron casting, comprising a lower mold base and an upper mold base.

[0007] The top end of the lower mold base is provided with the upper mold base, and the inside of the upper mold base is uniformly provided with an auxiliary structure.

[0008] The outer wall of both sides of the bottom of the upper die seat is fixed with a fixed structure, the outer wall of the bottom of the lower die seat is uniformly fixed with a support structure, and the lower die seat is provided with a heat dissipation structure below.

[0009] The heat dissipation structure comprises a heat dissipation seat arranged below the lower die seat, a lower cover plate fixedly installed at the bottom end of the heat dissipation seat, a water inlet pipe fixed at one side of the bottom of the heat dissipation seat, a water outlet pipe fixed at the other side of the top of the heat dissipation seat, an impeller arranged at the bottom of the heat dissipation seat, a connecting shaft fixedly installed at the middle position of the impeller, and a blade fixed at the top end of the connecting shaft extending to the outside of the heat dissipation seat, and a water spraying pipe uniformly fixed at the top of the heat dissipation seat.

[0010] Preferably, the top of the lower die seat and the bottom of the upper die seat are uniformly provided with a mold cavity, and the inside of the lower die seat and the upper die seat on one side of the mold cavity is provided with a flow channel, the inside of the upper die seat at the middle position is provided with a casting port, the inside of the upper die seat at the top end of the mold cavity is provided with an exhaust hole, the bottom of the upper die seat is provided with a positioning hole on both sides, and the inside of the positioning hole is provided with a positioning pin.

[0011] Preferably, the bottom of the lower die seat and the top of the upper die seat are provided with a reserved groove, the mold cavities are symmetrically distributed in the lower die seat and the upper die seat, the casting port is in a conical shape, the casting port and the mold cavity are connected through the flow channel, the top end of the exhaust hole and the top end of the upper die seat are located in the same plane, the bottom end of the positioning pin is fixedly connected with the top end of the lower die seat, and the top end of the positioning pin and the bottom of the positioning hole are provided with a chamfer.

[0012] Preferably, the auxiliary structure comprises a first heat dissipation cavity uniformly arranged in the inside of the upper die seat, a second heat dissipation cavity uniformly arranged in the inside of the lower die seat below the first heat dissipation cavity, and a heat dissipation fin uniformly fixed on the inner wall of both sides of the first heat dissipation cavity and the heat dissipation fin.

[0013] Preferably, the first heat dissipation cavity and the mold cavity are staggered distributed in the inside of the upper die seat, and the first heat dissipation cavity and the second heat dissipation cavity are connected.

[0014] Preferably, the fixed structure comprises an upper fixed plate fixed on the outer wall of both sides of the bottom of the upper die seat, a handle hinged at the middle position of the end away from the upper die seat of the upper fixed plate, a lower fixed plate fixed on the outer wall of the bottom end of the lower die seat of the upper fixed plate, a fixed hole arranged at the bottom end of the lower fixed plate, a handle hinged on the inner wall of one side of the handle, a spring sheet clamped between the bottom side of the handle and the handle, a hinge rod hinged on the top side of the handle, a limiting plate fixed on the inner wall of the handle above the handle, and a fixed pin penetrating through the inside of the limiting plate.

[0015] Preferably, the upper fixed plate and the lower fixed plate are clamped to each other by the limiting plate, one end of the articulated rod is hinged to the bottom end of the fixed pin, and the top end of the fixed pin extends to the inside of the fixed hole.

[0016] Preferably, the support structure comprises upper support seats uniformly fixed to the outer wall of the bottom of the lower mold base, the inside of each of the upper support seats is penetrated by a support column, the outer wall of the support column at the top of each of the upper support seats is threadedly connected with a nut, and the bottom end of each of the support columns is fixed with a lower support seat.

[0017] Preferably, the outer side wall of the top of the heat dissipation seat is fixedly connected with one side of the lower support seat, the bottom of the heat dissipation seat is provided with an internal cavity, the top of the heat dissipation seat is provided with a reflux cavity, the water inlet pipe and the water spraying pipe are in communication with the internal cavity, and the water outlet pipe is in communication with the reflux cavity.

[0018] Preferably, the bottom of the connecting shaft is fixedly connected with the impeller through bolts, the blade is located in the reserved groove at the bottom of the lower mold base, and the top end of the water spraying pipe extends to the lower side of the blade in the reserved groove at the bottom of the lower mold base.

[0019] The quick cooling and shaping mold for nodular cast iron casting has the advantages that:

[0020] By arranging the heat dissipation structure, the water pump is connected with the water inlet pipe to send water into the internal cavity of the heat dissipation seat, the water drives the impeller to rotate in the internal cavity, the impeller drives the blade to rotate at the bottom of the lower mold base through the connecting shaft, air is quickly passed through the second heat dissipation cavity and the first heat dissipation cavity, the heat dissipation speed is accelerated under the action of the heat dissipation fins, the water in the internal cavity is sprayed out through the water spraying pipe, under the high-speed rotation of the blade, the water is changed into water mist and enters the inside of the second heat dissipation cavity and the first heat dissipation cavity, the high-temperature heat dissipation fins contact the water mist to evaporate the water, and the heat of the heat dissipation fins is accelerated to be taken away, and the heat dissipation speed of the device is further improved.

[0021] Further, when the low-temperature heat dissipation fins contact the water mist, the water mist is adsorbed on the outer wall of the heat dissipation fins to form water droplets and drop into the reflux cavity at the top of the heat dissipation seat, and then is recycled through the water outlet pipe, so that water resources are saved.

[0022] Further, the water mist is uniformly sprayed in the inside of the first heat dissipation cavity and the second heat dissipation cavity, so that the lower mold base and the upper mold base are uniformly cooled, and the phenomenon that the metal liquid appears in the inside of the mold cavity is avoided.

[0023] Further, when the impeller rotates and the water sprayed out of the water spraying pipe collides with the rotating blade, the heat dissipation seat is vibrated, the heat dissipation seat drives the lower mold base and the upper mold base to vibrate through the support column, air in the inside of the mold cavity is completely discharged when the metal liquid is cast, and the phenomenon that the nodular cast iron appears is avoided.

[0024] Through the setting of the fixed structure, the upper die seat is accurately placed at the top of the lower die seat under the guidance of the positioning pin and the positioning hole, the handle and the grip are held, the grip makes the compression spring sheet deform, the grip will drive the fixed pin to move downward through the hinged rod, at this time, the handle is turned to the vertical direction of the upper fixed plate, the top end of the limiting plate is attached to the bottom end of the lower fixed plate, the grip is loosened, the grip will drive the fixed pin to move upward through the hinged rod under the elastic force of the spring sheet, the top end of the fixed pin is moved to the inside of the fixed hole, and then the upper fixed plate and the lower fixed plate are clamped and fixed through the limiting plate, so that the function of the device is realized. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front view schematic diagram of the present application;

[0026] Figure 2 It is a top view schematic diagram of the present application;

[0027] Figure 3 It is a bottom view schematic diagram of the present application;

[0028] Figure 4 It is a front view cross-sectional schematic diagram of the present application;

[0029] Figure 5 It is a side view cross-sectional schematic diagram of the present application;

[0030] Figure 6 It is a mold opening front view explosion schematic diagram of the present application;

[0031] Figure 7 It is a mold opening bottom view explosion schematic diagram of the present application;

[0032] Figure 8 It is a heat dissipation structure front view explosion schematic diagram of the present application;

[0033] Figure 9 It is a heat dissipation structure bottom view explosion schematic diagram of the present application;

[0034] Figure 10 It is a fixed structure side view cross-sectional schematic diagram of the present application.

[0035] The reference signs in the drawing are explained as follows: 1, lower die seat; 11, die cavity; 12, runner; 2, upper die seat; 21, pouring gate; 22, vent hole; 3, auxiliary structure; 31, first heat dissipation cavity; 32, heat dissipation fin; 33, second heat dissipation cavity; 4, fixing structure; 41, upper fixing plate; 42, lower fixing plate; 421, fixing hole; 43, handle; 44, limiting plate; 45, grip; 46, spring piece; 47, hinged rod; 48, fixing pin; 5, support structure; 51, upper support seat; 52, lower support seat; 53, support column; 54, nut; 6, heat dissipation structure; 61, heat dissipation seat; 62, lower cover plate; 63, water inlet pipe; 64, drain pipe; 65, impeller; 66, connecting shaft; 661, blade; 67, water spraying pipe; 7, positioning pin; 8, positioning hole. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0037] Please refer to Figures 1-10 The present application provides a rapid cooling and shaping mold for spheroidal graphite cast iron casting, which comprises a lower die seat 1 and an upper die seat 2.

[0038] Refer to Figures 1-9As shown, the top end of the lower die seat 1 is provided with the upper die seat 2, the top of the lower die seat 1 and the bottom of the upper die seat 2 are uniformly provided with the mold cavity 11, and the inside of the lower die seat 1 and the upper die seat 2 on one side of the mold cavity 11 is provided with the flow channel 12, the inside of the upper die seat 2 at the middle position is provided with the pouring gate 21, the inside of the upper die seat 2 at the top end of the mold cavity 11 is provided with the exhaust hole 22, the bottom of the upper die seat 2 on both sides is provided with the positioning hole 8, the inside of the positioning hole 8 is provided with the positioning pin 7, the bottom of the lower die seat 1 and the top of the upper die seat 2 are provided with the reserved groove, the mold cavities 11 are symmetrically distributed in the inside of the lower die seat 1 and the upper die seat 2, the pouring gate 21 is in a conical shape, the pouring gate 21 and the mold cavity 11 are communicated through the flow channel 12, the top end of the exhaust hole 22 and the top end of the upper die seat 2 are located in the same plane, the bottom end of the positioning pin 7 and the top end of the lower die seat 1 are fixedly connected, the top end of the positioning pin 7 and the bottom of the positioning hole 8 are provided with chamfers, the inside of the upper die seat 2 is uniformly provided with the auxiliary structure 3, the auxiliary structure 3 comprises the first heat dissipation cavity 31 uniformly provided in the inside of the upper die seat 2, the inside of the lower die seat 1 directly below the first heat dissipation cavity 31 is provided with the second heat dissipation cavity 33, the inner walls on both sides of the first heat dissipation cavity 31 and the heat dissipation fin 32 are uniformly fixedly provided with the heat dissipation fin 32, the first heat dissipation cavity 31 and the mold cavity 11 are staggered distributed in the inside of the upper die seat 2, the first heat dissipation cavity 31 and the second heat dissipation cavity 33 are communicated, the lower die seat 1 directly below is provided with the heat dissipation structure 6, the heat dissipation structure 6 comprises the heat dissipation seat 61 provided directly below the lower die seat 1, the bottom end of the heat dissipation seat 61 is fixedly installed with the lower cover plate 62, one side of the bottom of the heat dissipation seat 61 is fixedly provided with the water inlet pipe 63, the other side of the top of the heat dissipation seat 61 is fixedly provided with the water outlet pipe 64, the bottom of the heat dissipation seat 61 is provided with the impeller 65, the middle position of the impeller 65 is fixedly installed with the connecting shaft 66, and the top end of the connecting shaft 66 extends to the outside of the heat dissipation seat 61 and is fixedly provided with the blade 661, the top of the heat dissipation seat 61 is uniformly fixedly provided with the water spraying pipe 67, the outside wall of the top of the heat dissipation seat 61 is fixedly connected with one side of the lower support seat 52, the bottom of the heat dissipation seat 61 is provided with an embedded cavity, the top of the heat dissipation seat 61 is provided with a backflow cavity, the water inlet pipe 63 and the water spraying pipe 67 are communicated with the embedded cavity, the water outlet pipe 64 is communicated with the backflow cavity, the bottom of the connecting shaft 66 is fixedly connected with the impeller 65 through bolts, the blade 661 is located in the reserved groove in the bottom of the lower die seat 1, and the top end of the water spraying pipe 67 extends to the lower side of the blade 661 in the reserved groove in the bottom of the lower die seat 1.

[0039] The external power supply is connected with the water pump through the water inlet pipe 63, water is sent to the inside of the built-in cavity of the heat dissipation seat 61 through the water pump, the water will drive the impeller 65 to rotate in the inside of the built-in cavity, the impeller 65 drives the blades 661 to rotate at the bottom of the lower mold base 1 through the connecting shaft 66, air is quickly passed through the second heat dissipation cavity 33 and the first heat dissipation cavity 31, the heat dissipation speed is accelerated under the action of the heat dissipation fins 32, the water in the built-in cavity is sprayed out through the water spraying pipe 67, under the high-speed rotation of the blades 661, the water will be atomized into water mist into the inside of the second heat dissipation cavity 33 and the first heat dissipation cavity 31, the high-temperature heat dissipation fins 32 contact the water mist to evaporate the water, the low-temperature heat dissipation fins 32 contact the water mist, the water mist is adsorbed on the outer wall of the heat dissipation fins 32 to form water droplets and falls into the backflow cavity at the top of the heat dissipation seat 61, and then is recycled and used through the drain pipe 64, water resources are saved, the water mist is uniformly sprayed in the inside of the first heat dissipation cavity 31 and the second heat dissipation cavity 33, the lower mold base 1 and the upper mold base 2 are uniformly cooled, and the phenomenon that the metal liquid appears local temperature difference too large to cause uneven shrinkage in the inside of the mold cavity 11 is avoided, the heat dissipation seat 61 is vibrated when the impeller 65 rotates and the water sprayed out of the water spraying pipe 67 collides with the rotating blades 661, the heat dissipation seat 61 drives the lower mold base 1 and the upper mold base 2 to vibrate through the supporting column 53, air in the inside of the mold cavity 11 is completely discharged when the metal liquid is cast, and the phenomenon that the nodular cast iron appears air pocket is avoided.

[0040] Referring to Figure 6 , Figure 8 and Figure 10 , the outer walls on both sides of the bottom of the upper mold base 2 are each fixed with a fixed structure 4, the fixed structure 4 comprises an upper fixed plate 41 fixed on the outer walls on both sides of the bottom of the upper mold base 2, a handle 43 is hingedly connected to the middle position of the end of the upper fixed plate 41 away from the upper mold base 2, a lower fixed plate 42 is fixed on the outer wall of the bottom of the lower mold base 1 at the bottom end of the upper fixed plate 41, a fixed hole 421 is formed at the bottom end of the lower fixed plate 42, a grip 45 is hingedly connected to the inner wall on one side of the handle 43, a spring sheet 46 is clamped between the bottom side of the grip 45 and one side of the handle 43, a hinge rod 47 is hingedly connected to the top side of the grip 45, a limiting plate 44 is fixed on the inner wall of the handle 43 above the grip 45, a fixed pin 48 penetrates through the inside of the limiting plate 44, the upper fixed plate 41 and the lower fixed plate 42 are clamped with each other through the limiting plate 44, one end of the hinge rod 47 is hingedly connected to the bottom end of the fixed pin 48, the top end of the fixed pin 48 extends into the inside of the fixed hole 421, and the outer wall of the bottom of the lower mold base 1 is uniformly fixed with a supporting structure 5, the supporting structure 5 comprises an upper supporting seat 51 uniformly fixed on the outer wall of the bottom of the lower mold base 1, a supporting column 53 penetrates through the inside of the upper supporting seat 51, a nut 54 is threadedly connected to the outer wall of the supporting column 53 at the top end of the upper supporting seat 51, and the bottom end of the supporting column 53 is fixed with a lower supporting seat 52.

[0041] Under the guidance of the positioning pin 7 and the positioning hole 8, the upper die holder 2 is accurately placed on the top end of the lower die holder 1, the handle 43 and the handle 45 are held, the handle 45 is deformed by compressing the spring sheet 46, the handle 45 drives the fixed pin 48 to move downward through the hinged rod 47, at this time, the handle 43 is turned to the vertical direction of the upper fixed plate 41, the top end of the limiting plate 44 is attached to the bottom end of the lower fixed plate 42, the handle 45 is released, the handle 45 is rotated to drive the fixed pin 48 to move upward through the hinged rod 47 under the elastic force of the spring sheet 46, the top end of the fixed pin 48 is moved to the inside of the fixed hole 421, and then the upper fixed plate 41 and the lower fixed plate 42 are clamped and fixed through the limiting plate 44, the lower die holder 1 and the heat dissipation seat 61 are supported and fixed through the supporting column 53, the lower die holder 1 and the heat dissipation seat 61 maintain appropriate spacing, air is driven by the blade 661 to enter the inside of the second heat dissipation cavity 33 and the first heat dissipation cavity 31 between the lower die holder 1 and the heat dissipation seat 61, and then is discharged from the top end of the upper die holder 2, so that the air in the lower die holder 1 and the upper die holder 2 is kept unobstructed, and heat dissipation is facilitated.

[0042] Although the present application has been described in detail with reference to the foregoing embodiments, technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced by equivalent ones by those skilled in the art, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rapid cooling and shaping mold for cast ductile iron, comprising a lower mold base (1) and an upper mold base (2); Characterized in that: The top end of the lower mold base (1) is provided with the upper mold base (2), and the inside of the upper mold base (2) is uniformly provided with an auxiliary structure (3); The outer wall of both sides of the bottom of the upper mold base (2) is fixed with a fixed structure (4), and the outer wall of the bottom of the lower mold base (1) is uniformly fixed with a support structure (5), and the lower mold base (1) is provided below the heat dissipation structure (6); The heat dissipation structure (6) comprises a heat dissipation seat (61) arranged below the lower mold base (1), a lower cover plate (62) fixedly installed at the bottom end of the heat dissipation seat (61), a water inlet pipe (63) fixed on one side of the bottom of the heat dissipation seat (61), a drain pipe (64) fixed on the other side of the top of the heat dissipation seat (61), a impeller (65) arranged on the bottom of the heat dissipation seat (61), a connecting shaft (66) fixedly installed at the middle position of the impeller (65), and a blade (661) fixed at the top end of the connecting shaft (66) extending to the outside of the heat dissipation seat (61), and a water spraying pipe (67) uniformly fixed on the top of the heat dissipation seat (61).

2. A rapid chill sizing mold for ductile iron casting according to claim 1, characterized in that: The top of the lower mold base (1) and the bottom of the upper mold base (2) are uniformly provided with a mold cavity (11), and the inside of the mold cavity (11) is provided with a flow channel (12) on one side of the lower mold base (1) and the upper mold base (2), and the inside of the upper mold base (2) is provided with a pouring gate (21) at the middle position, and the inside of the upper mold base (2) is provided with an exhaust hole (22) at the top end of the mold cavity (11), and the bottom of the upper mold base (2) is provided with a positioning hole (8) on both sides, and the inside of the positioning hole (8) is provided with a positioning pin (7).

3. A rapid chill sizing mold for ductile iron casting according to claim 2, wherein: The bottom of the lower mold base (1) and the top of the upper mold base (2) are provided with a reserved groove, the mold cavities (11) are symmetrically distributed in the lower mold base (1) and the upper mold base (2), the pouring gate (21) is in a conical shape, the pouring gate (21) and the mold cavity (11) are connected through the flow channel (12), the top end of the exhaust hole (22) and the top end of the upper mold base (2) are located in the same plane, the bottom end of the positioning pin (7) and the top end of the lower mold base (1) are fixedly connected, and the top end of the positioning pin (7) and the bottom of the positioning hole (8) are provided with a chamfer.

4. A rapid chill sizing mold for ductile iron casting according to claim 1, wherein: The auxiliary structure (3) comprises a first heat dissipation cavity (31) uniformly arranged in the inside of the upper mold base (2), a second heat dissipation cavity (33) uniformly arranged in the inside of the lower mold base (1) below the first heat dissipation cavity (31), and heat dissipation fins (32) uniformly fixed on the inner walls on both sides of the first heat dissipation cavity (31) and the heat dissipation fins (32).

5. A rapid chill mould for the casting of ductile iron according to claim 4, characterised in that: The first heat dissipation cavity (31) and the mold cavity (11) are staggered distributed in the inside of the upper mold base (2), and the first heat dissipation cavity (31) and the second heat dissipation cavity (33) are connected.

6. A rapid chill sizing mold for ductile iron casting according to claim 1, wherein: The fixed structure (4) includes upper fixed plates (41) fixed to the outer walls of the two sides of the bottom of the upper die seat (2), handles (43) are hingedly connected to the middle positions of the ends away from the upper die seat (2) of the upper fixed plates (41), lower fixed plates (42) are fixed to the outer walls of the bottom end lower die seats (1) of the upper fixed plates (41), fixed holes (421) are formed in the bottom ends of the lower fixed plates (42), grip handles (45) are hingedly connected to the inner walls of one side of the handles (43), spring sheets (46) are clamped between the bottom side of the grip handles (45) and the handles (43), hinge rods (47) are hingedly connected to the top side of the grip handles (45), and limit plates (44) are fixed to the inner walls of the handles (43) above the grip handles (45), and fixed pins (48) penetrate the limit plates (44).

7. A rapid chill sizing mold for ductile iron casting according to claim 6 wherein: The upper fixed plates (41) and the lower fixed plates (42) are clamped by the limit plates (44), one end of the hinge rods (47) is hingedly connected to the bottom end of the fixed pins (48), and the top end of the fixed pins (48) extends into the fixed holes (421).

8. A rapid chill sizing mold for ductile iron casting according to claim 1, wherein: The support structure (5) includes upper support seats (51) uniformly fixed to the outer walls of the bottoms of the lower die seats (1), support columns (53) penetrate the interiors of the upper support seats (51), nuts (54) are threadedly connected to the outer walls of the support columns (53) at the top ends of the upper support seats (51), and lower support seats (52) are fixed to the bottom ends of the support columns (53).

9. A rapid chill sizing mold for ductile iron casting according to claim 8, wherein: The outer side wall of the top of the heat dissipation seat (61) is fixedly connected to one side of the lower support seat (52), the bottom of the heat dissipation seat (61) is provided with an internal cavity, the top of the heat dissipation seat (61) is provided with a reflux cavity, the water inlet pipe (63) and the water spraying pipe (67) are in communication with the internal cavity, and the drain pipe (64) is in communication with the reflux cavity.

10. A rapid chill sizing mold for ductile iron casting according to claim 3 wherein: The bottom of the connecting shaft (66) is fixedly connected with the impeller (65) through bolts, the blades (661) are located in the reserved grooves in the bottom of the lower die seat (1), and the top end of the water spraying pipe (67) extends below the blades (661) in the reserved grooves in the bottom of the lower die seat (1).

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