Ingot mold casting device with rapid demolding function

Abstract

The invention discloses an ingot mold casting device with a rapid demolding function, and relates to the technical field of casting equipment.The ingot mold casting device comprises a mold, a cooling unit, a bubble removing unit, a feedback unit and a demolding unit, the mold is used for forming of an ingot mold, the cooling unit is used for rapid cooling of the ingot mold, and the bubble removing unit is used for removing gas in molten liquid; the feedback unit is used for continuously providing appropriate pressure for the steel ingot and improving the density of the steel ingot in different stages of solidification of the steel ingot, the demolding unit is used for rapidly taking a molded steel ingot mold out of a mold, after molten liquid is poured into the mold, gas in the molten liquid is removed through the bubble removing unit, and cooling molding is conducted through the cooling unit; and the feedback unit continuously guarantees the pressure of the steel ingot in different solidification stages, the density of the steel ingot is improved, and finally the formed steel ingot is rapidly demoulded through the demoulding unit.

Description

Technical Field

[0001] The present invention relates to the technical field of casting equipment, and specifically to an ingot mold casting device with a rapid demolding function. Background Art

[0002] In the field of ingot mold casting, with the continuous improvement of the requirements of modern industry for the quality and production efficiency of ingots, the ingot mold casting device faces many problems to be solved urgently. At present, the traditional ingot mold casting device has significant limitations in aspects such as demolding efficiency, improvement of the internal quality of the ingot, and pressure control during the solidification process.

[0003] Most traditional ingot molds are of an integral structure. After the ingot solidifies, it fits tightly with the inner wall of the mold. When demolding, it is necessary to overcome large frictional forces and adhesion forces. The commonly used demolding method is to forcibly lift by large equipment such as a crane. This method not only has complex operations and long time consumption, but also is prone to deformation or even damage of the ingot due to uneven stress during the lifting process, seriously affecting the quality and production efficiency of the ingot.

[0004] Secondly, defects such as bubbles and porosity inside the ingot will seriously affect its mechanical properties and service performance. During the traditional casting process, when the molten steel is poured into the mold, air will inevitably be involved, forming bubbles. At the same time, the gas in the molten steel is also difficult to be completely discharged during the solidification process, resulting in a large number of pores inside the ingot. This makes it difficult to improve the density of the ingot and cannot meet the strict requirements of high-end manufacturing for the quality of steel.

[0005] During the solidification process of the ingot, due to volume shrinkage, a gap will appear between the ingot and the mold, which will lead to uneven pressure distribution inside the ingot, thereby affecting the densification of the ingot. The traditional ingot mold casting device lacks an effective pressure compensation mechanism and cannot maintain an appropriate pressure at different stages of the ingot solidification. This deficiency in pressure control makes the ingot prone to defects such as shrinkage cavities and porosity during the solidification process, seriously reducing the quality and performance of the ingot. Summary of the Invention

[0006] The purpose of the present invention is to provide an ingot mold casting device with a rapid demolding function to solve the problems raised in the prior art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] The steel ingot mold casting device with a rapid demolding function includes a mold, a cooling unit, a degassing unit, a feedback unit, and a demolding unit. The feedback unit is placed on a horizontal base. The cooling unit is fixedly connected to the mold. The degassing unit is fixedly installed at one end of the mold away from the horizontal base. The mold is fixedly installed at one end of the feedback unit away from the horizontal base. The feedback unit has the function of improving the density of the steel ingot. The feedback unit is fixedly connected to the demolding unit. The demolding unit is fixedly connected to the degassing unit. The demolding unit has the function of rapidly demolding the steel ingot.

[0009] The mold is used for the forming of the steel ingot mold. The cooling unit is used for the rapid cooling of the steel ingot mold. The degassing unit is used for the removal of gas in the molten liquid. The feedback unit is used for different stages of the solidification of the steel ingot, continuously providing a suitable pressure for the steel ingot to improve the density of the steel ingot. The demolding unit is used for rapidly taking out the formed steel ingot mold from the mold. After pouring the molten liquid into the mold, the gas in the molten liquid is removed by the degassing unit, cooled and formed by the cooling unit, the pressure of the steel ingot is continuously ensured during different solidification stages by the feedback unit to improve the density of the steel ingot, and finally the formed steel ingot is rapidly demolded by the demolding unit.

[0010] Further, the mold is composed of an inner cylinder and an outer cylinder, and a water inlet and a drain outlet are arranged on the mold.

[0011] The inner and outer cylinders of the mold are used for containing cold water, and the water inlet and drain outlet of the mold are used for pumping in and discharging cold and hot water.

[0012] Further, the cooling unit includes a water tank, a water pump, an inlet pipe, an outlet pipe, and a condenser. The water tank is placed on the horizontal base. The water pump is fixedly installed at one end of the water tank away from the horizontal base. The water pump is connected to the outer cylinder of the mold through the inlet pipe. One end of the outlet pipe is connected to the outer cylinder of the mold, and the other end of the outlet pipe is connected to the water tank. The condenser is fixedly installed in the water tank.

[0013] When steel ingot mold casting is required, the water pump is controlled to start by the controller. The water pump pumps the cold water in the water tank into the space between the inner and outer cylinders of the mold from the water inlet, thereby cooling and forming the molten iron inside the mold, and then discharging the heat through the drain outlet and flowing back into the water tank. Under the action of the condenser, the hot water is refrigerated again and recycled.

[0014] Further, the bubble removing unit includes an electric telescopic rod, a top cover, an air box, a telescopic rotary motor, a telescopic pipe, a push plate and a buffer spring. One end of the electric telescopic rod is fixedly connected to the top cover, and the other end of the electric telescopic rod is fixedly connected to the end of the mold far from the horizontal base. The air box is fixedly installed on the end face of the top cover close to the horizontal base. The air box is filled with inert gas. A one-way valve is arranged on the air box. The fixed end of the telescopic rotary motor is fixedly installed at the end of the air box far from the horizontal base. The output end of the telescopic rotary motor is fixedly connected to the movable end of the telescopic pipe. The fixed end of the telescopic pipe is rotatably installed at the fixed end of the telescopic rotary motor. The push plate is slidably installed inside the air box. One end of the buffer spring is fixedly connected to the inner surface of the air box far from the horizontal base, and the other end of the buffer spring is fixedly connected to the end of the push plate far from the horizontal base.

[0015] Further, the bubble removing unit further includes a straight rod, a slide plate, a push rod, a first shape memory metal sheet, a second shape memory metal sheet, a flexible jet plate and a ventilation hole. One end of the straight rod is fixedly connected to the end of the push plate close to the horizontal base, and the other end of the straight rod is fixedly connected to the slide plate. The slide plate is slidably installed on the fixed end of the telescopic pipe. One end of the push rod is rotatably connected to the end of the slide plate close to the horizontal base, and the other end of the push rod is rotatably connected to the end of the flexible jet plate far from the central axis of the mold. The first shape memory metal sheet is fixedly installed on the end face of the flexible jet plate far from the horizontal base, and the second shape memory metal sheet is fixedly installed on the end face of the flexible jet plate close to the horizontal base. One end of the flexible jet plate close to the central axis of the mold is conductively connected to the telescopic pipe. The flexible jet plate is provided with multiple groups of ventilation holes. The push rod is fixedly connected to the demolding unit.

[0016] When the staff pours the molten steel into the mold, the high-temperature steel liquid contacts the first memory metal sheet and the second memory metal sheet, causing the first memory metal sheet and the second memory metal sheet to be deformed by heat, thereby driving the end of the flexible jet plate to bend upward. At this time, the flexible jet plate pushes the push rod to move upward, so that the slide plate moves upward along the telescopic tube. Under the transmission action of the straight rod, the push plate is pushed upward, and the inert gas inside the air box is squeezed into the telescopic tube while squeezing the buffer spring, so that the inert gas is ejected from the vent of the flexible jet plate. The inert gas does not react chemically with the steel liquid, and small bubbles are formed after the inert gas is introduced. These bubbles contact and merge with the original bubbles in the steel liquid, and float up due to their low density, driving the original bubbles to quickly discharge from the surface of the steel liquid, reducing the bubbles caused by the steel liquid being poured into the mold and being drawn into the air, and cooperating with the controller to control the telescopic rotating motor to drive the telescopic tube to rotate and shrink at the same time, thereby driving the flexible jet plate to rotate and jet to stir the steel liquid. Under the combined action of the stirring and jetting of the flexible jet plate, the content of bubbles inside the steel liquid is reduced, thereby improving the density of the steel ingot after forming. When the telescopic tube drives the first memory metal sheet and the second memory metal sheet to move upward to remove the high-temperature molten steel, the first memory metal sheet and the second memory metal sheet gradually return to their original states, driving the flexible jet plate to return to a flat state.

[0017] Furthermore, the feedback unit includes a fixed ring plate, a telescopic spring, an electromagnet, a rack, a gear, an inner gear ring, a round rod and a contraction arc plate, the fixed ring plate is placed on a horizontal basis, the fixed ring plate is made of magnet material, one end of the telescopic spring is fixedly connected to the inner surface of the fixed ring plate, the other end of the telescopic spring is fixedly connected to the electromagnet, the electromagnet is fixedly mounted on the rack near one end of the fixed ring plate, the rack is meshingly connected to the gear, the inner gear ring is meshingly connected to the gear, the gear is rotatably mounted on the fixed ring plate, one end of the round rod is fixedly connected to the rack, and the other end is fixedly connected to one end of the contraction arc plate near the horizontal basis, the contraction arc plate consists of a fixed part and a movable part, the movable part of the contraction arc plate is installed inside the fixed part of the contraction arc plate through a tension spring, a thin film pressure sensor is attached to the inner surface of the contraction arc plate, and the inner gear ring is fixedly connected to the demolding unit.

[0018] During the cooling and forming process of the ingot, due to external contact with cooling water, a process of gradually cooling from the outside to the inside is carried out. During the gradual cooling and forming process of the ingot, due to continuous volume shrinkage, the mold cannot provide a certain pressure to ensure the forming of the ingot. At this time, when the thin film sensor inside the shrinkage arc plate detects that the pressure gradually decreases, it feeds back a signal to the controller. Then the controller sends an electric current into the electromagnet, making the electromagnet present the same polarity as the fixed ring plate. Under the action of like poles repelling each other, the fixed ring plate pushes the electromagnet to stretch the telescopic spring and drive the rack to move towards the center. On the one hand, the rack drives the shrinkage arc plate to gradually gather towards the middle under the driving action of the round rod, so that the movable part of the shrinkage arc plate is gradually squeezed and shrinks into the fixed part, thereby reducing the diameter and continuously providing a certain pressure for the forming of the ingot to ensure the forming quality of the ingot. On the other hand, the rack drives the gear to rotate during the movement process, so that the internal gear ring rotates. When the rack moves to the set position, it maintains this state for a period of time until the ingot is fully cooled and formed.

[0019] Further, the demoulding unit includes a driving coil, a turntable, a screw jack, a memory spring and a clamping plate. The driving coil is evenly wound on the outer surface of the inner cylinder of the mold. The turntable is fixedly connected to the internal gear ring through a long rod. The inner surface of the turntable is provided with internal threads. The turntable is rotatably installed on the fixed ring plate. The screw jack is rotatably connected to the turntable. The outer surface of the screw jack is provided with external threads. The screw jack is made of magnet. The memory spring is electrically connected to the driving coil. One end of the memory spring is fixedly connected to the push rod, and the other end of the memory spring is fixedly connected to the clamping plate. The clamping plate is rotatably installed at the end of the flexible air jet plate away from the telescopic tube. A flap is provided at the bottom of the mold, and the flap of the mold is used for the screw jack to lift the ingot.

[0020] When the cooling and forming of the ingot is completed, the controller stops sending an electric current to the electromagnet. At this time, under the action of the self-restoring force of the telescopic spring, it drives the electromagnet and the rack to move outwards, so that the internal gear ring rotates in the reverse direction, driving the turntable to rotate. The rotation of the turntable makes the screw jack screw up upwards, thereby pushing the formed ingot out of the mold. During the upward movement of the screw jack, the magnetic flux changes, so that an electric current is generated in the driving coil. The electric current is sent from the driving coil to the memory spring. After receiving the electric current, the memory spring expands, thereby pushing the clamping plate to swing downwards to clamp the top of the formed ingot. Under the action of the telescopic rotating motor, it drives the formed ingot to perform a slow screw-up action, reducing the occurrence of scratches and deformation on the surface of the formed steel nail and mold wear, ensuring the rapid demoulding of the steel nail while guaranteeing its quality.

[0021] Further, the deformation amount of the end of the first shape memory metal sheet away from the telescopic tube is less than that of the end of the second shape memory metal sheet away from the telescopic tube.

[0022] In order to make the first memory metal sheet and the second memory metal sheet have different deformation amounts when they come into contact with high-temperature molten steel, the flexible jet plate is driven to bend upward to push the push plate to spray inert gas into the molten steel, thereby reducing the bubble content and increasing the density of the steel ingot.

[0023] Furthermore, the diameter of the vent hole increases gradually from a position close to the central axis of the mold to a position far from the central axis.

[0024] Since the gap between the two ends of the flexible jet plate is larger and the gap between the two adjacent flexible jet plates in the middle is smaller, in order to make the molten steel inside the mold fully contact with the inert gas, improve the bubble removal effect and increase the density of the steel ingot.

[0025] Furthermore, a layer of heat insulation material is provided on the outer surfaces of the first memory metal sheet and the second memory metal sheet.

[0026] In order to avoid direct contact between the first memory metal sheet and the second memory metal sheet and the high-temperature molten steel, which would damage their own performance and make it impossible to discharge the inert gas inside the gas box, thus affecting the removal of bubbles in the molten steel.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention causes the high-temperature molten steel to contact with the first memory metal sheet and the second memory metal sheet and deform due to heat, thereby driving the end of the flexible jet plate to bend upward, pushing the push rod to move upward, causing the slide plate to move upward along the telescopic tube and pushing the push plate to move upward, squeezing the inert gas inside the gas box to be ejected from the vents of the telescopic tube and the flexible jet plate. After the inert gas is introduced, small bubbles are formed, which contact and merge with the original bubbles, driving the original bubbles to be quickly discharged from the surface of the molten steel, reducing the bubbles caused by the air being drawn into the mold when the molten steel is poured. The telescopic rotating motor drives the telescopic tube to rotate and shrink at the same time, so that the flexible jet plate rotates and jets to stir the molten steel. Under the combined action of the stirring of the flexible jet plate and the jetting, the content of bubbles inside the molten steel is reduced, thereby improving the density of the steel ingot after forming.

[0029] 2. In the process of gradual cooling and forming of the steel ingot, the controller transmits current to the electromagnet to make the electromagnet assume polarity due to the continuous volume contraction, thereby driving the rack to move toward the center. Under the transmission action of the round rod, the contraction arc plate is driven to gradually gather toward the middle, so that the active part of the contraction arc plate is gradually squeezed and contracts toward the inside of the fixed part, thereby reducing the diameter, continuously applying a certain pressure to the forming of the steel ingot, and ensuring the forming quality of the steel ingot.

[0030] 3. In the present invention, when the telescopic tube drives the first memory metal sheet and the second memory metal sheet to move upward to remove the high-temperature steel liquid, the first memory metal sheet and the second memory metal sheet gradually restore their original states, driving the flexible jet plate to restore to a flat state.

[0031] 4. After the ingot is cooled and formed, under the action of the restoring force of the telescopic spring, the electromagnet and the rack are driven to move outwards, so that the internal gear ring rotates in the reverse direction, driving the turntable to rotate. The rotation of the turntable causes the screw ejector rod to spiral upwards, thereby pushing the formed ingot out of the mold. During the upward movement of the screw ejector rod, the magnetic flux changes, thereby generating an electric current in the drive coil and delivering it to the memory spring. After receiving the electric current, the memory spring expands, pushing the clamping plate to swing downwards to clamp the top of the formed ingot. Under the action of the telescopic rotating motor, the formed ingot is driven to perform a slow spiral upward movement, reducing the occurrence of scratches and deformation on the surface of the formed steel nail and mold wear, ensuring the rapid demoulding of the steel nail while guaranteeing its quality. Description of the Drawings

[0032] Figure 1 is a schematic diagram of the overall external structure of an ingot mold casting device with a rapid demoulding function according to the present invention;

[0033] Figure 2 is a schematic diagram of the top view structure of an ingot mold casting device with a rapid demoulding function according to the present invention;

[0034] Figure 3 is an ingot mold casting device with a rapid demoulding function according to the present invention Figure 2 schematic diagram of the sectional view at A-A;

[0035] Figure 4 is a schematic diagram of the internal structure of the mold of an ingot mold casting device with a rapid demoulding function according to the present invention;

[0036] Figure 5 is a schematic diagram of the installation position structure of the degassing unit of an ingot mold casting device with a rapid demoulding function according to the present invention;

[0037] Figure 6 is a schematic diagram of the overall external structure of the feedback unit of an ingot mold casting device with a rapid demoulding function according to the present invention;

[0038] Figure 7 is a schematic diagram of a partial structure of the feedback unit of an ingot mold casting device with a rapid demoulding function according to the present invention;

[0039] Figure 8 is a schematic diagram of the internal structure of the air tank of an ingot mold casting device with a rapid demoulding function according to the present invention;

[0040] Figure 9 is a schematic diagram of the installation position structure of the buffer spring and the telescopic tube of an ingot mold casting device with a rapid demoulding function according to the present invention;

[0041] Figure 10For the ingot mold casting device with a quick demolding function of the present invention Figure 9 Schematic diagram of the enlarged partial view structure at position B in

[0042] Figure 11 For the ingot mold casting device with a quick demolding function of the present invention Figure 8 Schematic diagram of the structure from another perspective;

[0043] Figure 12 For the ingot mold casting device with a quick demolding function of the present invention Figure 11 Schematic diagram of the enlarged partial view structure at position C in

[0044] Figure 13 For the ingot mold casting device with a quick demolding function of the present invention Figure 12 Schematic diagram of the enlarged partial view structure at position D in

[0045] In the figure: 1. Mold; 2. Cooling unit; 21. Water tank; 22. Water pump; 23. Water inlet pipe; 24. Water outlet pipe; 25. Condenser; 3. Bubble removal unit; 31. Electric telescopic rod; 32. Top cover; 33. Air tank; 34. Telescopic and rotating motor; 35. Telescopic pipe; 36. Push plate; 37. Buffer spring; 38. Straight rod; 39. Slide plate; 310. Push rod; 311. First shape memory metal sheet; 312. Second shape memory metal sheet; 313. Flexible jet plate; 314. Vent hole; 4. Feedback unit; 41. Fixed ring plate; 42. Telescopic spring; 43. Electromagnet; 44. Rack; 45. Gear; 46. Internal gear ring; 47. Round rod; 48. Shrinking arc plate; 5. Demolding unit; 51. Driving coil; 52. Turntable; 53. Screw jack; 54. Memory spring; 55. Clamp plate. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] Embodiment: As Figures 1-13 shown, the present invention provides a technical solution:

[0048] As Figure 1 , 3, as shown in Figures 5, a steel ingot mold casting device with a rapid demolding function, includes a mold 1, a cooling unit 2, a degassing unit 3, a feedback unit 4 and a demolding unit 5. The feedback unit 4 is placed on a horizontal foundation. The cooling unit 2 is fixedly connected to the mold 1. The degassing unit 3 is fixedly installed at one end of the mold 1 away from the horizontal foundation. The mold 1 is fixedly installed at one end of the feedback unit 4 away from the horizontal foundation. The feedback unit 4 has the function of improving the density of the steel ingot. The feedback unit 4 is fixedly connected to the demolding unit 5. The demolding unit 5 is fixedly connected to the degassing unit 3. The demolding unit 5 has the function of rapidly demolding the steel ingot.

[0049] The mold 1 is used for the forming of the steel ingot mold. The cooling unit 2 is used for the rapid cooling of the steel ingot mold. The degassing unit 3 is used for the removal of gas in the molten liquid. The feedback unit 4 is used for different stages of the solidification of the steel ingot, continuously providing appropriate pressure for the steel ingot to improve the density of the steel ingot. The demolding unit 5 is used for rapidly taking out the formed steel ingot mold from the mold 1. After pouring the molten liquid into the mold 1, the gas in the molten liquid is removed through the degassing unit 3, cooled and formed through the cooling unit 2, the pressure of the steel ingot is continuously ensured during different solidification stages through the feedback unit 4 to improve the density of the steel ingot, and finally the formed steel ingot is rapidly demolded through the demolding unit 5.

[0050] As Figure 2 , 3 shown, the mold 1 is composed of an inner cylinder and an outer cylinder, and the mold 1 is provided with a water inlet and a drain outlet.

[0051] The inner cylinder and outer cylinder of the mold 1 are used for containing cold water, and the water inlet and drain outlet of the mold 1 are used for the pumping in and out of cold water and hot water.

[0052] As Figure 3 shown, the cooling unit 2 includes a water tank 21, a water pump 22, a water inlet pipe 23, a water outlet pipe 24 and a condenser 25. The water tank 21 is placed on a horizontal foundation. The water pump 22 is fixedly installed at one end of the water tank 21 away from the horizontal foundation. The water pump 22 is conductively connected to the outer cylinder of the mold 1 through the water inlet pipe 23. One end of the water outlet pipe 24 is conductively connected to the outer cylinder of the mold 1, and the other end of the water outlet pipe 24 is conductively connected to the water tank 21. The condenser 25 is fixedly installed in the water tank 21.

[0053] When steel ingot mold casting is required, the water pump 22 is controlled to start by the controller. The water pump 22 pumps the cold water in the water tank 21 into the space between the inner cylinder and the outer cylinder of the mold 1 from the water inlet, thereby cooling and forming the molten iron inside the mold 1, and then discharging the heat-carrying water from the drain outlet and flowing back into the water tank 21. Under the action of the condenser, the hot water is refrigerated again and recycled.

[0054] As Figure 4 , 8As shown in FIGS. 9, 10, and 11, the bubble removal unit 3 includes an electric telescopic rod 31, a top cover 32, an air box 33, a telescopic rotary motor 34, a telescopic tube 35, a push plate 36, and a buffer spring 37. One end of the electric telescopic rod 31 is fixedly connected to the top cover 32, and the other end of the electric telescopic rod 31 is fixedly connected to the end of the mold 1 away from the horizontal base. The air box 33 is fixedly installed on the end face of the top cover 32 close to the horizontal base. The air box 33 is filled with inert gas, and a one-way valve is provided on the air box 33. The fixed end of the telescopic rotary motor 34 is fixedly installed at the end of the air box 33 away from the horizontal base, and the output end of the telescopic rotary motor 34 is fixedly connected to the movable end of the telescopic tube 35. The fixed end of the telescopic tube 35 is rotatably installed at the fixed end of the telescopic rotary motor 34. The push plate 36 is slidably installed inside the air box 33. One end of the buffer spring 37 is fixedly connected to the inner surface of the air box 33 away from the horizontal base, and the other end of the buffer spring 37 is fixedly connected to the end of the push plate 36 away from the horizontal base.

[0055] As shown in Figure 8 , 11 , FIGS. 12 and 13, the bubble removal unit 3 further includes a straight rod 38, a slide plate 39, a push rod 310, a first shape memory metal sheet 311, a second shape memory metal sheet 312, a flexible jet plate 313, and vent holes 314. One end of the straight rod 38 is fixedly connected to the end of the push plate 36 close to the horizontal base, and the other end of the straight rod 38 is fixedly connected to the slide plate 39. The slide plate 39 is slidably installed on the fixed end of the telescopic tube 35. One end of the push rod 310 is rotatably connected to the end of the slide plate 39 close to the horizontal base, and the other end of the push rod 310 is rotatably connected to the end of the flexible jet plate 313 away from the central axis of the mold 1. The first shape memory metal sheet 311 is fixedly installed on the end face of the flexible jet plate 313 away from the horizontal base, and the second shape memory metal sheet 312 is fixedly installed on the end face of the flexible jet plate 313 close to the horizontal base. One end of the flexible jet plate 313 close to the central axis of the mold 1 is conductively connected to the telescopic tube 35. The flexible jet plate 313 is provided with multiple groups of vent holes 314. The push rod 310 is fixedly connected to the demolding unit 5.

[0056] When the staff pours the molten steel into the mold 1, the high-temperature molten steel contacts the first memory metal sheet 311 and the second memory metal sheet 312, causing the first memory metal sheet 311 and the second memory metal sheet 312 to deform due to the heat, thereby driving the end of the flexible jet plate 313 to bend upward. At this time, the flexible jet plate 313 pushes the push rod 310 to move upward, so that the slide plate 39 moves upward along the telescopic tube 35, and the push plate 36 is pushed upward under the transmission action of the straight rod 38, squeezing the buffer spring 37 while squeezing the inert gas inside the air box 33 into the telescopic tube 35, so that the inert gas is ejected from the flexible jet plate 313. The inert gas is ejected from the vent hole 314 of the flexible jet plate 313. The inert gas does not react chemically with the molten steel. After being introduced, small bubbles are formed. These bubbles contact and merge with the original bubbles in the molten steel, and float due to their low density, driving the original bubbles to quickly discharge from the surface of the molten steel, reducing the bubbles caused by the molten steel being poured into the mold 1 and being drawn into the air. The controller controls the telescopic rotating motor 34 to drive the telescopic tube 35 to rotate and shrink at the same time, thereby driving the flexible jet plate 313 to rotate and jet to stir the molten steel. Under the combined action of the stirring and jetting of the flexible jet plate 313, the content of bubbles in the molten steel is reduced, thereby improving the density of the ingot after forming. When the telescopic tube 35 drives the first memory metal sheet 311 and the second memory metal sheet 312 to move upward to the high-temperature molten steel, the first memory metal sheet 311 and the second memory metal sheet 312 gradually return to their original state, driving the flexible jet plate 313 to return to a flat state.

[0057] like Figure 6 , 7 As shown, the feedback unit 4 includes a fixed ring plate 41, a telescopic spring 42, an electromagnet 43, a rack 44, a gear 45, an inner gear ring 46, a round rod 47 and a contraction arc plate 48. The fixed ring plate 41 is placed on a horizontal foundation. The fixed ring plate 41 is made of magnet material. One end of the telescopic spring 42 is fixedly connected to the inner surface of the fixed ring plate 41, and the other end of the telescopic spring 42 is fixedly connected to the electromagnet 43. The electromagnet 43 is fixedly mounted on the rack 44 near one end of the fixed ring plate 41. The rack 44 is meshed with the gear 45. The gear 45 is rotatably mounted on the fixed ring plate 41. The inner gear ring 46 is meshed with the gear 45. One end of the round rod 47 is fixedly connected to the rack 44, and the other end is fixedly connected to one end of the contraction arc plate 48 near the horizontal foundation. The contraction arc plate 48 consists of a fixed part and a movable part. The movable part of the contraction arc plate 48 is installed inside the fixed part of the contraction arc plate 48 through a tension spring. A thin film pressure sensor is attached to the inner surface of the contraction arc plate 48, and the inner gear ring 46 is fixedly connected to the demoulding unit 5.

[0058] During the cooling and forming process of the ingot, due to external contact with cooling water, a gradual cooling process from the outside to the inside is carried out. During the gradual cooling and forming process of the ingot, due to continuous volume shrinkage, the mold 1 cannot provide a certain pressure to ensure the forming of the ingot. At this time, when the thin film sensor inside the shrinkage arc plate 48 detects that the pressure gradually decreases, it feeds back a signal to the controller. Then the controller sends current into the electromagnet 43 to make the electromagnet 43 present the same polarity as the fixed ring plate 41. Under the action of like poles repelling each other, the fixed ring plate 41 pushes the electromagnet 43 to stretch the telescopic spring 42 and drive the rack 44 to move towards the center. On the one hand, the rack 44 drives the shrinkage arc plate 48 to gradually gather towards the middle under the driving action of the round rod 47, so that the movable part of the shrinkage arc plate 48 is gradually squeezed and shrinks into the fixed part, thereby reducing the diameter and continuously providing a certain pressure for the forming of the ingot to ensure the forming quality of the ingot. On the other hand, during the movement of the rack 44, the gear 45 is driven to rotate, so that the internal gear ring 46 rotates. When the rack 44 moves to the set position, this state is maintained for a period of time until the ingot is fully cooled and formed.

[0059] As Figure 5 、 7 、shown in Fig. 13, the demoulding unit 5 includes a driving coil 51, a turntable 52, a screw ejector rod 53, a memory spring 54 and a clamping plate 55. The driving coil 51 is evenly wound around the outer surface of the inner cylinder of the mold 1. The turntable 52 is fixedly connected to the internal gear ring 46 through a long rod. The inner surface of the turntable 52 is provided with internal threads. The turntable 52 is rotatably installed on the fixed ring plate 41. The screw ejector rod 53 is rotatably connected to the turntable 52. The outer surface of the screw ejector rod 53 is provided with external threads. The material of the screw ejector rod 53 is a magnet. The memory spring 54 is electrically connected to the driving coil 51. One end of the memory spring 54 is fixedly connected to the push rod 310, and the other end of the memory spring 54 is fixedly connected to the clamping plate 55. The clamping plate 55 is rotatably installed at the end of the flexible air jet plate 313 away from the telescopic tube 35. A flap is provided at the bottom of the mold 1, and the flap of the mold 1 is used for the screw ejector rod 53 to jack up the ingot.

[0060] After the ingot is cooled and formed, the controller stops supplying current to the electromagnet 43. At this time, under the action of the restoring force of the telescopic spring 42, the electromagnet 43 and the rack 44 are driven to move outward, so that the internal gear ring 46 rotates in the reverse direction, driving the turntable 52 to rotate. The rotation of the turntable 52 causes the screw ejector 53 to screw upward, thereby pushing the formed ingot out of the mold 1. During the upward movement of the screw ejector 53, the magnetic flux changes, thereby generating a current in the drive coil 51. The current is transmitted from the drive coil 51 to the memory spring 54. After receiving the current, the memory spring 54 expands, thereby pushing the clamping plate 55 to swing downward to clamp the top of the formed ingot. Under the action of the telescopic rotary motor 34, the formed ingot is driven to perform a slow screw upward movement, reducing the occurrence of scratches and deformation on the surface of the formed steel nail and wear of the mold 1, ensuring the rapid demolding of the steel nail while guaranteeing its quality.

[0061] As Figure 13 shown, the deformation of the end of the first shape memory metal sheet 311 away from the telescopic tube 35 is smaller than that of the end of the second shape memory metal sheet 312 away from the telescopic tube 35.

[0062] In order to make the deformations of the first shape memory metal sheet 311 and the second shape memory metal sheet 312 different when they come into contact with the high-temperature molten steel, so as to drive the flexible jet plate 313 to bend upward and push the push plate 36 to inject inert gas into the molten steel, reducing the bubble content and improving the density of the ingot.

[0063] As Figure 13 shown, the diameter of the ventilation hole 314 gradually increases from the vicinity of the central axis of the mold 1 to the outside away from the central axis.

[0064] Since the gap between the two ends of the flexible jet plate 313 is large and the gap between two adjacent flexible jet plates 313 in the middle is small, in order to make the molten steel inside the mold 1 fully contact with the inert gas, improve the bubble removal effect and enhance the density of the ingot.

[0065] As Figure 13 shown, a layer of heat insulation material is provided on the outer surfaces of the first shape memory metal sheet 311 and the second shape memory metal sheet 312.

[0066] To avoid the direct contact of the first shape memory metal sheet 311 and the second shape memory metal sheet 312 with the high-temperature molten steel, which may cause damage to their own properties, unable to discharge the inert gas inside the air box 33, and affect the removal of bubbles in the molten steel.

[0067] The working principle of the present invention:

[0068] When steel fixed mold casting is required, the water pump 22 is turned on by the controller, and the water pump 22 draws cold water in the water tank 21 from the water inlet into the space between the inner tube and the outer tube of the mold 1, thereby cooling the molten iron inside the mold 1 and forming it, so that the molten iron is discharged from the drain outlet with heat and flows back into the water tank 21. The hot water is re-cooled under the action of the condensed gas and recycled again.

[0069] When the staff pours the molten steel into the mold 1, the high-temperature molten steel contacts the first memory metal sheet 311 and the second memory metal sheet 312, causing the first memory metal sheet 311 and the second memory metal sheet 312 to deform due to the heat, thereby driving the end of the flexible jet plate 313 to bend upward. At this time, the flexible jet plate 313 pushes the push rod 310 to move upward, so that the slide plate 39 moves upward along the telescopic tube 35, and the push plate 36 is pushed upward under the transmission action of the straight rod 38, squeezing the buffer spring 37 while squeezing the inert gas inside the air box 33 into the telescopic tube 35, so that the inert gas is ejected from the flexible jet plate 313. The inert gas is ejected from the vent hole 314 of the flexible jet plate 313. The inert gas does not react chemically with the molten steel. After being introduced, small bubbles are formed. These bubbles contact and merge with the original bubbles in the molten steel, and float due to their low density, driving the original bubbles to quickly discharge from the surface of the molten steel, reducing the bubbles caused by the molten steel being poured into the mold 1 and being drawn into the air. The controller controls the telescopic rotating motor 34 to drive the telescopic tube 35 to rotate and shrink at the same time, thereby driving the flexible jet plate 313 to rotate and jet to stir the molten steel. Under the combined action of the stirring and jetting of the flexible jet plate 313, the content of bubbles in the molten steel is reduced, thereby improving the density of the ingot after forming. When the telescopic tube 35 drives the first memory metal sheet 311 and the second memory metal sheet 312 to move upward to the high-temperature molten steel, the first memory metal sheet 311 and the second memory metal sheet 312 gradually return to their original state, driving the flexible jet plate 313 to return to a flat state.

[0070] During the cooling and forming process of the ingot, due to external contact with cooling water, a process of gradually cooling from the outside to the inside is carried out. During the gradual cooling and forming process of the ingot, due to continuous volume shrinkage, the mold 1 cannot provide a certain pressure to ensure the forming of the ingot. At this time, when the thin film sensor inside the shrinkage arc plate 48 detects that the pressure gradually decreases, it feeds back a signal to the controller. Then the controller sends current into the electromagnet 43 to make the electromagnet 43 present the same polarity as the fixed ring plate 41. Under the action of like poles repelling each other, the fixed ring plate 41 pushes the electromagnet 43 to stretch the telescopic spring 42 and drive the rack 44 to move towards the center. On the one hand, the rack 44 drives the shrinkage arc plate 48 to gradually gather towards the middle under the driving action of the round rod 47, so that the movable part of the shrinkage arc plate 48 is gradually squeezed and shrinks into the fixed part, thereby reducing the diameter and continuously providing a certain pressure for the forming of the ingot to ensure the forming quality of the ingot. On the other hand, during the movement of the rack 44, the gear 45 is driven to rotate, so that the internal gear ring 46 rotates. When the rack 44 moves to the set position, this state is maintained for a period of time until the ingot is fully cooled and formed.

[0071] After the ingot is cooled and formed, the controller stops sending current to the electromagnet 43. At this time, under the action of the self-restoring force of the telescopic spring 42, the electromagnet 43 and the rack 44 are driven to move outwards, so that the internal gear ring 46 rotates in the reverse direction, driving the turntable 52 to rotate. The rotation of the turntable 52 causes the screw ejector rod 53 to screw upwards, thereby pushing the formed ingot out of the mold 1. During the upward movement of the screw ejector rod 53, the magnetic flux changes, so that a current is generated in the drive coil 51. The current is sent from the drive coil 51 to the memory spring 54. After receiving the current, the memory spring 54 expands, thereby pushing the clamping plate 55 to swing downwards to clamp the top of the formed ingot. Under the action of the telescopic rotary motor 34, the formed ingot is driven to perform a slow screw-upward movement, reducing the occurrence of scratches and deformation on the surface of the formed steel nail and wear of the mold 1, ensuring the rapid demoulding of the steel nail while guaranteeing its quality.

[0072] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An ingot mold casting device with a fast demolding function, characterized in that: The steel ingot mold casting device with a fast demolding function includes a mold (1), a cooling unit (2), a degassing unit (3), a feedback unit (4), and a demolding unit (5). The feedback unit (4) is placed on a horizontal base. The cooling unit (2) is fixedly connected to the mold (1). The degassing unit (3) is fixedly installed at one end of the mold (1) away from the horizontal base. The mold (1) is fixedly installed at one end of the feedback unit (4) away from the horizontal base. The feedback unit (4) has the function of improving the density of the steel ingot. The feedback unit (4) is fixedly connected to the demolding unit (5). The demolding unit (5) is fixedly connected to the degassing unit (3). The demolding unit (5) has the function of quickly demolding the steel ingot.

2. The ingot mold casting device with a rapid demolding function according to claim 1, characterized in that: The mold (1) is composed of an inner cylinder and an outer cylinder. The mold (1) is provided with a water inlet and a drain outlet.

3. A steel ingot mold casting device with a rapid demolding function according to claim 1, characterized in that: The cooling unit (2) includes a water tank (21), a water pump (22), a water inlet pipe (23), a water outlet pipe (24), and a condenser (25). The water tank (21) is placed on a horizontal base. The water pump (22) is fixedly installed at one end of the water tank (21) away from the horizontal base. The water pump (22) is connected to the outer cylinder of the mold (1) through the water inlet pipe (23). One end of the water outlet pipe (24) is connected to the outer cylinder of the mold (1), and the other end of the water outlet pipe (24) is connected to the water tank (21). The condenser (25) is fixedly installed in the water tank (21).

4. A steel ingot mold casting device with a rapid demolding function according to claim 1, characterized in that: The degassing unit (3) includes an electric telescopic rod (31), a top cover (32), a gas tank (33), a telescopic rotary motor (34), a telescopic pipe (35), a push plate (36), and a buffer spring (37). One end of the electric telescopic rod (31) is fixedly connected to the top cover (32), and the other end of the electric telescopic rod (31) is fixedly connected to one end of the mold (1) away from the horizontal base. The gas tank (33) is fixedly installed on the end face of the top cover (32) close to the horizontal base. The gas tank (33) is filled with inert gas. A one-way valve is provided on the gas tank (33). The fixed end of the telescopic rotary motor (34) is fixedly installed at one end of the gas tank (33) away from the horizontal base. The output end of the telescopic rotary motor (34) is fixedly connected to the movable end of the telescopic pipe (35). The fixed end of the telescopic pipe (35) is rotatably installed at the fixed end of the telescopic rotary motor (34). The push plate (36) is slidably installed inside the gas tank (33). One end of the buffer spring (37) is fixedly connected to the inner surface of one end of the gas tank (33) away from the horizontal base, and the other end of the buffer spring (37) is fixedly connected to one end of the push plate (36) away from the horizontal base.

5. A steel ingot mold casting device with a rapid demolding function according to claim 4, characterized in that: The bubble removing unit (3) further includes a straight rod (38), a sliding plate (39), a push rod (310), a first shape memory metal sheet (311), a second shape memory metal sheet (312), a flexible jet plate (313) and ventilation holes (314). One end of the straight rod (38) is fixedly connected to the end of the push plate (36) close to the horizontal base, and the other end of the straight rod (38) is fixedly connected to the sliding plate (39). The sliding plate (39) is slidably mounted on the fixed end of the telescopic tube (35). One end of the push rod (310) is rotatably connected to the end of the sliding plate (39) close to the horizontal base, and the other end of the push rod (310) is rotatably connected to the end of the flexible jet plate (313) away from the central axis of the mold (1). The first shape memory metal sheet (311) is fixedly mounted on the end face of the flexible jet plate (313) away from the horizontal base, and the second shape memory metal sheet (312) is fixedly mounted on the end face of the flexible jet plate (313) close to the horizontal base. One end of the flexible jet plate (313) close to the central axis of the mold (1) is conductively connected to the telescopic tube (35). The flexible jet plate (313) is provided with a plurality of groups of ventilation holes (314). The push rod (310) is fixedly connected to the demolding unit (5).

6. A steel ingot mold casting device with a rapid demolding function according to claim 1, characterized in that: The feedback unit (4) includes a fixed ring plate (41), a telescopic spring (42), an electromagnet (43), a rack (44), a gear (45), an internal gear ring (46), a round rod (47) and a shrinking arc plate (48). The fixed ring plate (41) is placed on the horizontal base. The fixed ring plate (41) is made of magnetic material. One end of the telescopic spring (42) is fixedly connected to the inner surface of the fixed ring plate (41), and the other end of the telescopic spring (42) is fixedly connected to the electromagnet (43). The electromagnet (43) is fixedly mounted on the end of the rack (44) close to the fixed ring plate (41). The rack (44) is meshed with the gear (45). The gear (45) is rotatably mounted on the fixed ring plate (41). The internal gear ring (46) is meshed with the gear (45). One end of the round rod (47) is fixedly connected to the rack (44), and the other end is fixedly connected to the end of the shrinking arc plate (48) close to the horizontal base. The shrinking arc plate (48) consists of a fixed part and a movable part. The movable part of the shrinking arc plate (48) is installed inside the fixed part of the shrinking arc plate (48) through a tension spring. A thin film pressure sensor is attached to the inner surface of the shrinking arc plate (48). The internal gear ring (46) is fixedly connected to the demolding unit (5).

7. A steel ingot mold casting device with a rapid demolding function according to claim 5, characterized in that: The demolding unit (5) includes a drive coil (51), a turntable (52), a screw ejector rod (53), a memory spring (54) and a clamping plate (55). The drive coil (51) is uniformly wound around the outer surface of the inner cylinder of the mold (1). The turntable (52) is fixedly connected to the internal gear ring (46) through a long rod. The inner surface of the turntable (52) is provided with an internal thread. The turntable (52) is rotatably installed on the fixed ring plate (41). The screw ejector rod (53) is rotatably connected to the turntable (52). The outer surface of the screw ejector rod (53) is provided with an external thread. The screw ejector rod (53) is made of a magnet. The memory spring (54) is electrically connected to the drive coil (51). One end of the memory spring (54) is fixedly connected to the push rod (310), and the other end of the memory spring (54) is fixedly connected to the clamping plate (55). The clamping plate (55) is rotatably installed at the end of the flexible air jet plate (313) away from the telescopic pipe (35). A flap is provided at the bottom of the mold (1), and the flap of the mold (1) is used for the screw ejector rod (53) to lift the ingot.

8. A steel ingot mold casting device with a rapid demolding function according to claim 5, characterized in that: The deformation amount of one end of the first shape memory metal sheet (311) away from the telescopic pipe (35) is smaller than that of one end of the second shape memory metal sheet (312) away from the telescopic pipe (35).

9. A steel ingot mold casting device with a rapid demolding function according to claim 1, characterized in that: The diameter of the ventilation holes (314) gradually increases from the position close to the central axis of the mold (1) to the position far from the central axis.

10. A steel ingot mold casting device with a rapid demolding function according to claim 5, characterized in that: A layer of heat insulation material is provided on the outer surfaces of the first shape memory metal sheet (311) and the second shape memory metal sheet (312).

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