Casting device for nodular cast iron

Abstract

The invention relates to the technical field of nodular cast iron casting devices, in particular to a nodular cast iron casting device which comprises a casting support, a plurality of limiting rods, a pressing air cylinder, a first die body and a second die body, the pressing air cylinder is fixedly connected to the casting support, and a telescopic shaft of the pressing air cylinder is fixedly connected with the first die body; the limiting rods are in sliding connection with the casting support, the lower ends of the limiting rods are fixedly connected with the first mold body, the second mold body is arranged on the lower side of the first mold body, a cavity between the first mold body and the second mold body is used as a mold cavity for casting molding, and the side, facing the second mold body, of the first mold body is fixedly connected with a plurality of limiting columns. And each limiting column is connected with the second die body in a sliding manner. According to the technical scheme, the cooling efficiency after casting operation is improved, the production efficiency is improved, meanwhile, the safety of surrounding workers and the environment of a production workshop are guaranteed, cooling water loss is reduced, and waste of the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ductile iron casting devices, and in particular to a ductile iron casting device. Background Art

[0002] Ductile iron is a high-strength cast iron material developed in the 1950s. Its comprehensive performance is close to that of steel. Based on its excellent performance, it has been successfully used to cast some parts with complex forces and high requirements for strength, toughness and wear resistance. Ductile iron has rapidly developed into a widely used cast iron material second only to gray cast iron. The so-called "iron instead of steel" mainly refers to ductile iron. Ductile iron is obtained by spheroidizing and inoculating to obtain spheroidal graphite, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, thereby obtaining a higher strength than carbon steel. Ductile iron is obtained by spheroidizing and inoculating to obtain spheroidal graphite, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, thereby obtaining a higher strength than carbon steel. Cast iron is an iron-carbon alloy with a carbon content greater than 2.11%. It is obtained by high-temperature melting and casting of industrial pig iron, scrap steel and other steel and their alloy materials. Ductile iron is a high-strength cast iron material developed in the 1950s. Its comprehensive performance is close to that of steel. Based on its excellent performance, it has been successfully used to cast some parts with complex force and high requirements on strength, toughness and wear resistance.

[0003] In the prior art, a ductile iron casting device capable of rapid cooling is disclosed with announcement number "CN113770339B", comprising a water trough, a cooling mechanism being arranged inside the water trough, a casting mechanism being arranged on one side of the water trough, the cooling mechanism comprising two vertical plates, the bottoms of the two vertical plates being connected to the bottom wall of the water trough, a first slide being arranged on the adjacent side surfaces of the two vertical plates, a cross plate being slidably arranged inside the first slide, a load-bearing plate being connected to the top of the cross plate, a mold shell being connected to the top of the load-bearing plate, clamping plates being slidably arranged on both sides of the bottom of the mold shell, a spring being connected to one side of the two clamping plates away from the vertical plates, the other end of the spring being connected to the mold shell, second slides being arranged on the inner walls of the mold shell at both sides of the mold shell at the top of the clamping plates, a clamping block being connected to the top of the two clamping plates, the clamping block being connected to the mold shell through the second slide, a third slide being arranged on the top of the two vertical plates, a slide plate being slidably arranged inside the two third slides, and the two A push plate is connected to one adjacent side of each of the slides, the casting mechanism comprises a channel, the channel is inclined, and the inclination angle is set to 6-8°, the bottom wall of the channel is set to a wave-breaking shape, the bottom end of the channel is arranged above the water tank, the two sides of the horizontal plate respectively pass through the first slide grooves on both sides, and are slidably connected to the vertical plate through the first slide grooves, a plurality of limit bars are connected to the top of the load-bearing plate, a plurality of limit grooves are provided at the bottom of the mold shell, the left and right sides of the bottom wall of the water tank are connected to the first electric push rods, the output ends of the two first electric push rods are respectively connected to the left and right bottoms of the horizontal plate, the left and right sides of the bottom wall of the water tank are connected to the first electric push rods, the output ends of the two first electric push rods are respectively connected to the left and right bottoms of the horizontal plate, the number of the limit bars is not less than three, the limit grooves match the limit bars, the bottom end of the channel is connected to a baffle, one side of the bottom of the baffle is provided with a through hole, and the bottom surface of the channel is connected to two supporting columns.

[0004] The above technology simply cools down the hot melt after casting through water cooling, and the cooling water in the water tank is static, and the cooling water in the water tank cannot quickly exchange the heat on the mold surface. The mold for casting the hot melt placed in a water tank soaked in cooling water cannot achieve the effect of rapid cooling, which reduces production efficiency. When the high-temperature mold quickly contacts the cooling water, the cooling water will undergo intense heat exchange with the high-temperature outer surface of the mold, causing the cooling water to evaporate rapidly to form steam, and may cause splashing or water vapor explosion, thereby affecting the safety of surrounding workers and the production workshop environment, and at the same time causing part of the cooling water to be lost, resulting in a waste of production costs. Summary of the invention

[0005] The present invention provides a casting device for ductile iron, which improves the cooling efficiency after casting operation, improves production efficiency, and at the same time ensures the safety of surrounding workers and the production workshop environment, reduces cooling water loss, and reduces waste of production costs.

[0006] The technical solution of the present invention is as follows:

[0007] A casting device for ductile iron, comprising a casting support, a plurality of limit rods, a clamping cylinder, a first mold body and a second mold body, wherein the clamping cylinder is fixedly connected to the casting support, a telescopic shaft of the clamping cylinder is fixedly connected to the first mold body, each of the limit rods is slidably connected to the casting support, a lower end of each limit rod is fixedly connected to the first mold body, the second mold body is arranged at the lower side of the first mold body, and a cavity between the first mold body and the second mold body is used as a mold cavity for casting;

[0008] A plurality of limiting columns are fixedly connected to the first mold body on one side facing the second mold body, each of the limiting columns is slidably connected to the second mold body, and a plurality of heat sinks are fixedly connected to the second mold body;

[0009] A first cooling bin is fixedly connected between the casting brackets, a temperature insulation board is fixedly connected in the first cooling bin, a second cooling bin is slidably connected on the temperature insulation board, and the second cooling bin and the second mold body abut against and slide against the second cooling bin;

[0010] A heat exchange module is fixedly connected to the outside of the first cooling chamber, which cools the cooling water in the cavity below the insulation plate and then circulates it back to the cavity above the insulation plate;

[0011] The bottom wall of the second cooling chamber is connected with a drain assembly for cooperating with the second mold body to move downward to circulate the cooling water in the second cooling chamber;

[0012] A linkage component is connected to the side of the second mold body facing the second cooling chamber to cooperate with the second mold body to move downward to improve the cooling effect of the second mold body surface, and a sponge block is fixedly connected to the lower side of the second mold body.

[0013] Further, the linkage assembly includes a plurality of water-stirring columns and protective plates, each of the water-stirring columns is rotatably connected to the second mold body, the upper end of each water-stirring column is fixedly connected to a first synchronous wheel, one side of each of the first synchronous wheels is rotatably connected to a second synchronous wheel, and each of the second synchronous wheels is coaxially fixedly connected to a stirring fan on the side facing the water-stirring column;

[0014] The first synchronous wheel and the second synchronous wheel are meshed with a synchronous belt.

[0015] Furthermore, the protective plate is fixedly connected to the upper side of the second mold body.

[0016] Further, the drainage assembly includes a positioning column and two water-stopping sleeves, the positioning column is slidably connected to the bottom wall of the second cooling bin, the positioning column is fixedly connected to a receiving plate at one end facing the second mold body, two drainage plugs are fixedly connected to the lower side of the receiving plate, and the upper outer side of each drainage plug is coaxially slidably connected to a drainage sleeve, and each drainage sleeve is slidably connected to the bottom wall of the second cooling bin;

[0017] Each of the water-stopping sleeves is fixedly connected to the lower side of the second cooling bin, and the inner wall of the water-stopping sleeve is in close contact with the outer wall of the water-draining sleeve;

[0018] Each drain plug is sleeved with a return spring, and two ends of the return spring are respectively in contact with the receiving plate and the drain sleeve.

[0019] Furthermore, the drain plug is provided with a plurality of first drain grooves, and the drain sleeve is provided with a plurality of second drain grooves.

[0020] Furthermore, alignment grooves are respectively provided on both sides of the long sides of the second cooling bin, and two pressure relief grooves are respectively provided on both sides of the short sides of the second cooling bin. Two alignment blocks and two wind shields are fixedly connected to the lower side of the second mold body, and each of the alignment blocks abuts against the inner wall of each of the alignment grooves, and each of the wind shields covers the two pressure relief grooves on one side.

[0021] Furthermore, the number of the agitation fans is the same as the number of the pressure relief grooves, and the axis of each agitation fan is colinear with the vertical side of the adjacent pressure relief groove.

[0022] Furthermore, two reset plates are fixedly connected to the second cooling bin, and two reset columns are slidably connected to each of the reset plates. The upper end of each reset column is fixedly connected to the lower side of the insulation plate, and the lower end of each reset column is fixedly connected to the bottom wall of the first cooling bin. A pressure spring is sleeved on each reset column, and both ends of the pressure spring are respectively abutted against the bottom wall of the first cooling bin and the reset plate.

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

[0024] The drain assembly can separate the first cooling chamber and the second cooling chamber separately, so that the cooling water in the second cooling chamber and the second mold body will not affect the water temperature of the upper cavity of the insulation plate in the first cooling chamber, so that the cooling water in the second cooling chamber can fully exchange heat with the second mold body, and then the cooling water in the first cooling chamber and the second cooling chamber can be quickly circulated, so that the cooling water cooled by the heat exchange module can continuously take away the temperature of the surface of the second mold body, thereby improving the cooling efficiency of the second mold body. The linkage assembly utilizes the high-temperature water vapor generated by the contact between the high-temperature surface of the second mold body and the cooling water, and then stirs the cooling water in the second cooling chamber, thereby improving the heat exchange efficiency between the cooling water in the second cooling chamber and the second mold body, thereby further improving the cooling efficiency of the second mold body. At the same time, the high-temperature water vapor will pass through the cooling water in the first cooling chamber that is not in contact with the second mold body, so that the high-temperature vaporized cooling water can be quickly cooled, condensed and dissolved in the cooling water, thereby reducing the loss of cooling water, while ensuring the safety of surrounding staff and the environment of the surrounding workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Figure 1 It is a schematic diagram of the positive axis of the present invention;

[0027] Figure 2 The half section of the present invention is a schematic diagram of the positive axis Figure 1 ;

[0028] Figure 3 for Figure 2 A is an enlarged schematic diagram;

[0029] Figure 4 The half section of the present invention is a schematic diagram of the positive axis Figure 2 ;

[0030] Figure 5 for Figure 4 A magnified schematic diagram of B;

[0031] Figure 6 It is a schematic diagram of a partial normal axis explosion of the present invention;

[0032] Figure 7 It is a local oblique axis schematic diagram of the present invention.

[0033] In the figure: 11, casting bracket; 12, limiting rod; 13, clamping cylinder; 14, first mold body; 15, second mold body; 16, heat sink; 17, sponge block; 21, limiting column; 22, first cooling chamber; 23, insulation board; 24, second cooling chamber; 241, alignment groove; 242, pressure relief groove; 25, alignment block; 26, wind shield; 27, reset plate; 28, reset column; 29, pressure spring; 210, heat exchange module; 31, stirring column; 32, first synchronous wheel; 33, second synchronous wheel; 34, stirring fan; 35, synchronous belt; 36, protective plate; 41, positioning column; 42, receiving plate; 43, drain plug; 431, first drain trough; 44, drain sleeve; 441, second drain trough; 45, water stop sleeve; 46, reset spring. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1 to Figure 7As shown, this embodiment proposes a casting device for ductile iron, including a casting bracket 11, a plurality of limit rods 12, a clamping cylinder 13, a first mold body 14 and a second mold body 15, the clamping cylinder 13 is fixedly connected to the casting bracket 11, the telescopic shaft of the clamping cylinder 13 is fixedly connected to the first mold body 14, each limit rod 12 is slidably connected to the casting bracket 11, the lower end of each limit rod 12 is fixedly connected to the first mold body 14, the second mold body 15 is arranged at the lower side of the first mold body 14, and the cavity between the first mold body 14 and the second mold body 15 is used as a mold cavity for casting;

[0036] The first mold body 14 is fixedly connected to a plurality of limiting columns 21 on one side facing the second mold body 15, and each limiting column 21 is slidably connected to the second mold body 15. The limiting columns 21 enable the second mold body 15 to move synchronously when the first mold body 14 moves upward, so that workers can demould and transfer the ductile iron after casting and cooling, and at the same time, the first mold body 14 and the second mold body 15 are more accurately embedded, and the casting effect of the ductile iron after casting is increased. A plurality of heat sinks 16 are fixedly connected to the second mold body 15, which increases the contact area between the second mold body 15 and the cooling water in the second cooling chamber 24, thereby improving the heat exchange efficiency between the cooling water and the second mold body 15, so that the second mold body 15 can be cooled faster;

[0037] The first cooling chamber 22 is fixedly connected between the casting brackets 11, the insulation board 23 is fixedly connected in the first cooling chamber 22, the second cooling chamber 24 is slidably connected to the insulation board 23, and the second cooling chamber 24 and the second mold body 15 are slidably abutted against the second cooling chamber 24;

[0038] The insulation plate 23 divides the first cooling chamber 22 into two chambers, and then the second cooling chamber 24 separates the two chambers into separate working chambers.

[0039] The outer side of the first cooling chamber 22 is fixedly connected to a heat exchange module 210 that cools the cooling water in the cavity below the insulation plate 23 and then circulates it back to the cavity above the insulation plate 23;

[0040] A drain assembly that cooperates with the second mold body 15 to move downward to circulate the cooling water in the second cooling chamber 24 is connected to the bottom wall of the second cooling chamber 24;

[0041] The drain assembly can separate the first cooling chamber 22 and the second cooling chamber 24 separately, so that the cooling water in the second cooling chamber 24 and the second mold body 15 will not affect the water temperature of the upper cavity of the insulation board 23 in the first cooling chamber 22, so that the cooling water in the second cooling chamber 24 can fully exchange heat with the second mold body 15, and then the cooling water in the first cooling chamber 22 and the second cooling chamber 24 can be quickly circulated, so that the cooling water cooled by the heat exchange module 210 can continuously take away the temperature of the surface of the second mold body 15, thereby improving the cooling efficiency of the second mold body 15 and improving the casting production efficiency;

[0042] The second mold body 15 is connected to a linkage component on the side facing the second cooling chamber 24 to cooperate with the second mold body 15 to move downward to improve the cooling effect on the surface of the second mold body 15;

[0043] The linkage component utilizes the high-temperature water vapor generated by the contact between the high-temperature surface of the second mold body 15 and the cooling water, and then stirs the cooling water in the second cooling chamber 24, thereby improving the heat exchange efficiency between the cooling water in the second cooling chamber 24 and the second mold body 15, thereby further improving the cooling efficiency of the second mold body 15. At the same time, the high-temperature water vapor will pass through the cooling water in the first cooling chamber 22 that is not in contact with the second mold body 15, so that the high-temperature vaporized cooling water will be quickly cooled and condensed and dissolved in the cooling water, thereby reducing the loss of cooling water and ensuring the safety of surrounding staff and the environment of the surrounding workshop;

[0044] The lower side of the second mold body 15 is fixedly connected to the sponge block 17. When the lower end of the positioning column 41 touches the bottom, the receiving plate 42 stops moving, and the second mold body 15 continues to move downward with the second cooling chamber 24, which will cause the water-stop sleeve 45 to move upward relative to the second cooling chamber 24, thereby allowing the second drain trough 441 to communicate with the cooling water in the second cooling chamber 24, thereby quickly discharging the high-temperature cooling water in the second cooling chamber 24 through the second drain trough 441.

[0045] like Figure 4-5 As shown, the linkage assembly includes a plurality of water stirring columns 31 and a protective plate 36, each of which is rotatably connected to the second mold body 15, and the upper end of each water stirring column 31 is fixedly connected to each first synchronous wheel 32, and the second synchronous wheel 33 is rotatably connected to one side of each first synchronous wheel 32, and each second synchronous wheel 33 is coaxially fixedly connected to the stirring fan 34 toward one side of the water stirring column 31;

[0046] The synchronous belt 35 is meshed with the first synchronous wheel 32 and the second synchronous wheel 33;

[0047] When the second mold body 15 is completely fitted with the upper side surface of the second cooling chamber 24, the high temperature in the second mold body 15 will undergo a violent heat exchange with the cooling water in the second cooling chamber 24, causing the cooling water to quickly form high-temperature water vapor, and then the water vapor is blown toward the agitation fan 34 through the pressure relief groove 242, thereby driving the agitation fan 34 to rotate, and then driving the agitation fan 34 to rotate through the first synchronous wheel 32 and the second synchronous wheel 33, so that each agitation water column 31 increases the flow effect of the cooling water in the second cooling chamber 24, so that the cooling water in the second cooling chamber 24 can fully exchange heat with the outer surface of the second mold body 15, thereby improving the cooling effect of the second mold body 15, that is, improving the casting efficiency.

[0048] like Figure 4-5 As shown, the protective plate 36 is fixedly connected to the upper side of the second mold body 15. The protective plate 36 can protect the components between the second mold body 15 and the protective plate 36. At the same time, when the first mold body 14 and the second mold body 15 are interlocked with each other, the wear of the first mold body 14 and the second mold body 15 is reduced, and the service life of the first mold body 14 and the second mold body 15 is increased.

[0049] like Figure 2-3 As shown, the drainage assembly includes a positioning column 41 and two water-stopping sleeves 45, the positioning column 41 is slidably connected to the bottom wall of the second cooling chamber 24, the positioning column 41 is fixedly connected to the receiving plate 42 at one end facing the second mold body 15, the lower side of the receiving plate 42 is fixedly connected to two drainage plugs 43, the upper outer side of each drainage plug 43 is coaxially slidably connected to each drainage sleeve 44, and each drainage sleeve 44 is slidably connected to the bottom wall of the second cooling chamber 24;

[0050] After the second mold body 15 moves down, each first drain groove 431 is connected with each second drain groove 441, and the second mold body 15 is further moved down, and then the positioning column 41 moves down with the second cooling chamber 24, and will contact the bottom surface of the first cooling chamber 22, and then as the second cooling chamber 24 continues to move down, the second cooling chamber 24 will move down along the drain sleeve 44 with the water-stop sleeve 45, and then the second drain groove 441 on the drain sleeve 44 is connected with the cavity on the upper side of the second cooling chamber 24, so that the cooling water that has been fully heat exchanged in the upper cavity of the second cooling chamber 24 can quickly flow into the cavity on the lower side of the insulation board 23 in the first cooling chamber 22 through the second drain groove 441, and then the cooling water in the upper cavity of the insulation board 23 in the first cooling chamber 22 will continue to take away the temperature in the second cooling chamber 24, thereby improving the cooling effect on the second mold body 15;

[0051] Each water-stopping sleeve 45 is fixedly connected to the lower side of the second cooling chamber 24, and the inner wall of the water-stopping sleeve 45 is in close contact with the outer wall of the drain sleeve 44;

[0052] Each return spring 46 is sleeved on each drain plug 43, and two ends of the return spring 46 are respectively in contact with the receiving plate 42 and the drain sleeve 44;

[0053] After the second mold body 15 is reset and moved upward, under the action of the reset spring 46, the drain sleeve 44 is pressed on the second cooling chamber 24, and the first drain groove 431 and the second drain groove 441 are misaligned, and then the upper and lower cavities of the insulation board 23 in the second cooling chamber 24 are separated independently from each other.

[0054] like Figure 2-3 As shown, a plurality of first drainage grooves 431 are all provided on the drainage plug 43, and a plurality of second drainage grooves 441 are all provided on the drainage sleeve 44. When the second mold body 15 moves down and completely abuts against the second cooling chamber 24, each first drainage groove 431 will be connected with each second drainage groove 441, and then when the second mold body 15 moves down further, the water-stop sleeve 45 moves down to connect the second drainage groove 441 with the cooling water in the upper cavity of the second cooling chamber 24, and then the cooling water in the second cooling chamber 24 that has completely exchanged heat with the second mold body 15 will flow quickly from the second drainage groove 441 into the drainage plug 43, and finally flow into the cavity on the lower side of the insulation plate 23 in the first cooling chamber 22, waiting to be cooled by the heat exchange module 210 and then circulated back to the upper side of the insulation plate 23.

[0055] like Figures 4 to 7 As shown, two alignment grooves 241 are both provided on both sides of the long side of the second cooling chamber 24, and two pressure relief grooves 242 are respectively provided on both sides of the short side of the second cooling chamber 24. The lower side of the second mold body 15 is fixedly connected with two alignment blocks 25 and two wind shields 26. Each alignment block 25 abuts against the inner wall of each alignment groove 241, and each wind shield 26 covers the two pressure relief grooves 242 on one side.

[0056] After the second mold body 15 is abutted and compacted against the second cooling chamber 24, the alignment block 25 will be completely embedded in the alignment groove 241, so that the high-temperature water vapor in the second cooling chamber 24 can only overflow from the pressure relief groove 242, and the wind shield 26 will guide the high-temperature water vapor overflowing from the pressure relief groove 242, so that the overflowing high-temperature water vapor will directly contact the cooling water in the first cooling chamber 22, and then condense through the cooling effect, and dissolve again in the cooling water, thereby reducing the loss of cooling water and reducing the waste of production operations.

[0057] like Figure 1 to Figure 3 As shown, the number of the stirring fans 34 is the same as the number of the pressure relief grooves 242, and the axis of each stirring fan 34 is collinear with the vertical side of the adjacent pressure relief groove 242;

[0058] The high-temperature water vapor that quickly overflows from the second cooling chamber 24 through the pressure relief groove 242 drives the stirring fan 34 to rotate, thereby driving the stirring water column 31 to rotate in conjunction.

[0059] like Figure 2 and Figure 6 As shown, the two reset plates 27 are fixedly connected to the second cooling bin 24, the two reset columns 28 are slidably connected to the reset plates 27, the upper ends of the reset columns 28 are fixedly connected to the lower side of the insulation plate 23, the lower ends of the reset columns 28 are fixedly connected to the bottom wall of the first cooling bin 22, and the pressure springs 29 are sleeved on the reset columns 28, and the two ends of the pressure springs 29 are respectively in contact with the bottom wall of the first cooling bin 22 and the reset plates 27;

[0060] When the second mold body 15 moves downward and the second cooling chamber 24 moves downward together, the cooling water level in the upper cavity of the insulation board 23 in the first cooling chamber 22 will flood the pressure relief groove 242, and then the water vapor overflowing from the pressure relief groove 242 can be cooled by the cooling water in the first cooling chamber 22, and then part of the water vapor will dissolve in the cooling water in the first cooling chamber 22 again, reducing the loss of cooling water in the first cooling chamber 22, and when the second mold body 15 is reset and moved upward, the second cooling chamber 24 is reset under the action of the pressure spring 29, and then the pressure relief groove 242 is higher than the cooling water level in the upper cavity of the insulation board 23 in the first cooling chamber 22 again, so that the cooling water in the first cooling chamber 22 and the cooling water in the second cooling chamber 24 are independent of each other, so that the cooling water in the upper cavity of the insulation board 23 in the first cooling chamber 22 can better cool the second mold body 15 in the second cooling chamber 24 in subsequent operations.

[0061] The principle of this embodiment is:

[0062] The telescopic shaft of the clamping cylinder 13 is completely retracted into the clamping cylinder 13, so that the first mold body 14 moves upward with the second mold body 15 through the limiting column 21, and then the hot melt for casting is cast into the second mold body 15, and then the second mold body 15 with the high-temperature casting melt is quickly moved downward by the clamping cylinder 13, so that the second mold body 15 is pressed into the second cooling chamber 24, so that the lower side of the second mold body 15 is abutted against the upper side of the second cooling chamber 24, and then the first mold body 14 and the second mold body 15 are embedded to form a casting molding cavity;

[0063] At this time, the outer surface of the second mold body 15 conducts the high temperature to the cooling water in the second cooling chamber 24, which will produce a violent heat exchange, so that part of the cooling water in the second cooling chamber 24 will quickly turn into high-temperature water vapor and splashing high-temperature water droplets, and the high-temperature water droplets will be blocked by the inner wall of the second cooling chamber 24. The high-temperature water vapor will quickly increase the pressure of the cavity between the second mold body 15 and the second cooling chamber 24, and then the high-temperature water vapor will overflow to the outside through the pressure relief groove 242. The flow rate of the overflowing high-temperature water vapor is very fast. This impact force will drive the stirring fan 34 to rotate, thereby rotating the stirring water column 31, so that the cooling water in the second cooling chamber 24 quickly and fully exchanges heat with the second mold body 15, thereby improving the cooling effect of the second mold body 15;

[0064] The high-temperature water vapor overflowed by the stirring fan 34 is guided by the wind shield 26 and directly contacts the cooling water in the upper cavity of the insulation board 23 in the first cooling chamber 22, thereby cooling the high-temperature water vapor, causing part of the high-temperature water vapor to cool down and condense quickly and dissolve in the cooling water again;

[0065] At the same time, when the lower side of the second mold body 15 abuts against the upper side of the second cooling chamber 24, the second mold body 15 moves downward with the receiving plate 42, so that the first drain groove 431 is connected with the second drain groove 441.

[0066] Then continue to drive the clamping cylinder 13, drive the second mold body 15 to move further downward, and the second mold body 15 moves the second cooling chamber 24 further downward, so that the cooling water level in the upper cavity of the insulation plate 23 in the first cooling chamber 22 will submerge the pressure relief groove 242, so that the cooling water in the upper cavity of the insulation plate 23 in the first cooling chamber 22 will flow back into the second cooling chamber 24 through the pressure relief groove 242, and then in the downward movement of the second cooling chamber 24, when the lower end of the positioning column 41 first contacts the bottom wall of the first cooling chamber 22, the receiving plate 42 will stop moving, and the second mold body 15 continues to move downward with the second cooling chamber 24, which will cause the water-stop sleeve 45 to move upward relative to the second cooling chamber 24, thereby making the second drainage groove 441 communicate with the cooling water in the second cooling chamber 24, so that the high-temperature cooling water in the second cooling chamber 24 can be quickly discharged through the second drainage groove 441;

[0067] The water in the first cooling chamber 22 and the second cooling chamber 24 begins to flow in a circulating flow, thereby further improving the cooling effect on the surface of the second mold body 15. After waiting for the ductile iron cast in the second mold body 15 to be formed, the telescopic shaft of the clamping cylinder 13 is completely reset, and the first mold body 14 and the second mold body 15 are demolded. Then, the second mold body 15 is moved upward to facilitate workers to transfer the demolded cast iron. At this time, the first cooling chamber 22 and the second cooling chamber 24 form a separate cavity. At the same time, the cooling water circulates through the heat exchange module 210, so that the temperature of the cooling water in the second cooling chamber 24 is maintained at a low temperature, so that the cooling operation of the next casting operation can be quickly entered.

[0068] The above are only preferred embodiments of the present invention and are 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 in the protection scope of the present invention.

Claims

1. A casting device for ductile iron, comprising a casting support (11), a plurality of limiting rods (12), a clamping cylinder (13), a first mold body (14) and a second mold body (15), wherein the clamping cylinder (13) is fixedly connected to the casting support (11), the telescopic shaft of the clamping cylinder (13) is fixedly connected to the first mold body (14), each limiting rod (12) is slidably connected to the casting support (11), the lower end of each limiting rod (12) is fixedly connected to the first mold body (14), the second mold body (15) is arranged on the lower side of the first mold body (14), and the cavity between the first mold body (14) and the second mold body (15) is used as a mold cavity for casting, characterized in that ； A plurality of limiting columns (21) are fixedly connected to the first mold body (14) on one side facing the second mold body (15), each of the limiting columns (21) is slidably connected to the second mold body (15), and a plurality of heat sinks (16) are fixedly connected to the second mold body (15); A first cooling chamber (22) is fixedly connected between the casting brackets (11); a temperature insulation plate (23) is fixedly connected inside the first cooling chamber (22); a second cooling chamber (24) is slidably connected to the temperature insulation plate (23); the second cooling chamber (24) and the second mold body (15) are slidably abutted against the second cooling chamber (24); A heat exchange module (210) is fixedly connected to the outside of the first cooling chamber (22) and is used to cool the cooling water in the cavity below the insulation plate (23) and then circulate it back to the cavity above the insulation plate (23); A water drain component is connected to the bottom wall of the second cooling chamber (24) and cooperates with the second mold body (15) to move downward to circulate the cooling water in the second cooling chamber (24); The second mold body (15) is connected to a linkage component on the side facing the second cooling chamber (24) for cooperating with the second mold body (15) to move downward to improve the cooling effect on the surface of the second mold body (15), and a sponge block (17) is fixedly connected to the lower side of the second mold body (15).

2. The casting device for ductile iron according to claim 1, characterized in that: The linkage assembly comprises a plurality of water stirring columns (31) and a protective plate (36), each of the water stirring columns (31) is rotatably connected to the second mold body (15), the upper end of each water stirring column (31) is fixedly connected to a first synchronous wheel (32), one side of each first synchronous wheel (32) is rotatably connected to a second synchronous wheel (33), and one side of each second synchronous wheel (33) facing the water stirring column (31) is coaxially fixedly connected to a stirring fan (34); A synchronous belt (35) is meshed on the first synchronous wheel (32) and the second synchronous wheel (33).

3. The casting device for ductile iron according to claim 2, characterized in that: The protective plate (36) is fixedly connected to the upper side of the second mold body (15).

4. The casting device for ductile iron according to claim 1, characterized in that: The drainage assembly comprises a positioning column (41) and two water-stopping sleeves (45); the positioning column (41) is slidably connected to the bottom wall of the second cooling chamber (24); one end of the positioning column (41) facing the second mold body (15) is fixedly connected to a receiving plate (42); two drainage plugs (43) are fixedly connected to the lower side of the receiving plate (42); the upper outer side of each drainage plug (43) is coaxially slidably connected to a drainage sleeve (44); each drainage sleeve (44) is slidably connected to the bottom wall of the second cooling chamber (24); Each of the water-stopping sleeves (45) is fixedly connected to the lower side of the second cooling chamber (24), and the inner wall of the water-stopping sleeve (45) is in close contact with the outer wall of the water-draining sleeve (44); Each drain plug (43) is sleeved with a return spring (46), and two ends of the return spring (46) are respectively in contact with the receiving plate (42) and the drain sleeve (44).

5. The casting device for ductile iron according to claim 4, characterized in that: The drain plug (43) is provided with a plurality of first drain grooves (431), and the drain sleeve (44) is provided with a plurality of second drain grooves (441).

6. The casting device for ductile iron according to claim 2, characterized in that: The second cooling chamber (24) is provided with alignment grooves (241) on both sides of the long side, and two pressure relief grooves (242) are provided on both sides of the short side of the second cooling chamber (24). Two alignment blocks (25) and two wind shields (26) are fixedly connected to the lower side of the second mold body (15), and each alignment block (25) abuts against the inner wall of each alignment groove (241), and each wind shield (26) covers the two pressure relief grooves (242) on one side.

7. The casting device for ductile iron according to claim 6, characterized in that: The number of the stirring fans (34) is the same as the number of the pressure relief grooves (242), and the axis of each stirring fan (34) is collinear with the vertical side of the adjacent pressure relief groove (242).

8. The casting device for ductile iron according to claim 1, characterized in that: Two reset plates (27) are fixedly connected to the second cooling chamber (24), and two reset columns (28) are slidably connected to each reset plate (27). The upper end of each reset column (28) is fixedly connected to the lower side of the insulation plate (23), and the lower end of each reset column (28) is fixedly connected to the bottom wall of the first cooling chamber (22). Each reset column (28) is sleeved with a pressure spring (29), and the two ends of the pressure spring (29) are respectively in contact with the bottom wall of the first cooling chamber (22) and the reset plate (27).

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