Energy-saving melting and casting equipment and melting process thereof

Abstract

The invention provides energy-saving melting and casting equipment and a melting process thereof, and relates to the technical field of melting and casting equipment, the energy-saving melting and casting equipment comprises a U-shaped vertical supporting frame and a circular cover plate, two vertical limiting shafts are symmetrically installed on a transverse side rod of the U-shaped vertical supporting frame in a penetrating and sliding mode, and a thread driving assembly is rotationally arranged on the transverse side rod; a limiting disc is welded to the bottom end of the vertical supporting threaded shaft, a six-edge sliding shaft is welded and hoisted to the bottom side of the limiting disc, and a baffle disc is welded to the bottom end of the six-edge sliding shaft; a U-shaped connecting frame is installed on the six-edge sliding shaft in a sliding mode, a spring is arranged on the portion, located between the U-shaped connecting frame and the limiting disc, of the six-edge sliding shaft in a compressed and sleeved mode, and the baffle disc abuts against and makes contact with the middle portion of the top end of the U-shaped connecting frame when sliding upwards. And the circular cover plate is fixedly connected with the two vertical limiting shafts and the U-shaped connecting frame. When the circular cover plate is closed, the circular cover plate can be ensured not to be bent and deformed by interference jacking on the basis of being stably compacted and sealed, so that the reliability and the practicability of opening and closing operation of the circular cover plate can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of melting and casting equipment, and in particular to energy-saving melting and casting equipment and a melting process thereof. Background Art

[0002] The medium frequency induction furnace is a type of energy-saving melting and casting equipment that uses the electromagnetic induction effect generated by medium frequency current (usually 50Hz~20kHz) to heat and melt metal.

[0003] On existing melting and casting equipment, the cover plate that seals the top opening of the molten crucible to prevent the molten material from being lost inside the crucible, thereby indirectly reducing the energy consumption of the equipment and improving the energy saving effect of the equipment, is mostly driven by a screw thread to implement the up and down lifting switch, and the drive unit that drives the screw thread generally adopts a point-to-point forward and reverse control mode, which makes it difficult to accurately control the lifting and lowering accuracy of the cover plate. As a result, when the cover plate is pressed and sealed on the top opening of the molten crucible, the drive unit may still continue to rotate and continue to drive the cover plate down, causing the cover plate to be deformed by the pressure or causing overload damage to the drive unit. Although some equipment is equipped with an automatic stop control system for the drive unit, the system is composed of multiple limit sensors, automation controllers (such as PLCs, etc.) and multiple intermediate relays. These control electrical appliances are numerous and the procurement cost is high, which will increase the overall cost of the equipment, reduce the cost-effectiveness of the equipment, and be unfavorable for the promotion and sales of the equipment. Summary of the Invention

[0004] In view of this, the present invention provides an energy-saving melting and casting equipment and a smelting process thereof to solve the problem that the accuracy of the cover plate being pushed up and down cannot be accurately controlled, resulting in that when the cover plate is pressed and sealed on the top opening of the molten material crucible, the driving unit may still continue to rotate and continue to push the cover plate down, causing the cover plate to be pressed and deformed or causing overload damage to the driving unit.

[0005] The technical solution proposed by the present invention is: an energy-saving melting and casting equipment and a melting process thereof, specifically comprising a U-shaped vertical support frame and a circular cover plate, wherein two vertical limit shafts are symmetrically and slidably installed on the horizontal side bars of the U-shaped vertical support frame, and a threaded drive assembly is rotatably provided on the horizontal side bars; The threaded drive assembly is jointly composed of a threaded sleeve, a driven gear and a retaining ring welded to the top and bottom ends of the threaded sleeve; a vertical support threaded shaft is installed through the threaded sleeve in a threaded screwing manner, a limiting disk is welded to the bottom end of the vertical support threaded shaft, a hexagonal sliding shaft is welded and suspended on the bottom side of the limiting disk, and a retaining disk is welded to the bottom end of the hexagonal sliding shaft; a U-shaped connecting frame is slidably installed on the hexagonal sliding shaft, a spring is compression-fitted between the part of the hexagonal sliding shaft between the U-shaped connecting frame and the limiting disk, and when the retaining disk slides upward, it abuts against the middle part of the top end of the U-shaped connecting frame; the circular cover plate is fixedly connected to the two vertical limiting shafts and the U-shaped connecting frame.

[0006] Further, the threaded sleeve is rotatably and penetratingly fitted with the middle part of the horizontal side bar of the U-shaped vertical support frame, and the driven gear and the retaining ring are respectively abutted against the upper and lower sides of the horizontal side bar.

[0007] Further, a connecting block is welded to the bottom end of the vertical limiting shaft, and a plug block is welded to the bottom end of the U-shaped connecting frame; Three rectangular positioning frames are welded and arranged on the top of the circular cover plate, a U-shaped positioning part is installed through the rectangular positioning frame in a spring-pushed positioning manner, a rectangular slot is formed at an interval between the middle connecting plate inside the rectangular positioning frame and a short side plate of the rectangular positioning frame, and the plug block and the two connecting blocks are respectively inserted and fitted with the three rectangular slots.

[0008] Further, the first ends of the two vertical side shafts of the two outer U-shaped positioning parts are correspondingly inserted and fitted with the two connecting blocks in a penetrating manner, and the first ends of the two vertical side shafts of the U-shaped positioning part in the middle position are inserted and fitted with the plug block in a penetrating manner; A synchronous driving part with a C-shaped structure is arranged on the U-shaped positioning part, a vertical connecting rod is welded at the middle position inside the C-shaped part of the synchronous driving part, and the first end of the vertical connecting rod and the first ends of the two long horizontal side bars of the synchronous driving part are respectively welded and fixed to the horizontal side plates of the three U-shaped positioning parts.

[0009] Further, two limiting rings are symmetrically welded on the two vertical side shafts of the U-shaped positioning part, the spring for pushing the U-shaped positioning part is sleeved on the vertical side shaft, and is compressed and clamped between the limiting ring and the middle connecting plate.

[0010] Further, two E-shaped mounting parts are symmetrically welded on the horizontal side bar of the U-shaped vertical support frame, an inverted lifting motor is fixedly connected between the top parts of the two E-shaped mounting parts, a driving gear is fixedly sleeved on the rotating shaft of the lifting motor, and the driving gear is meshed with the driven gear for transmission.

[0011] Further, it further includes a protective housing, a melting crucible is fixedly inserted inside the protective housing, and when the circular cover plate slides downward, it is in contact with the melting crucible; The bottom plate of the molten material crucible is welded and fixed to the bottom plate of the protective shell. The top part of the molten material crucible protrudes from the protective shell. An annular cover is fixed between the top of the circumferential side wall of the protective shell and the molten material crucible.

[0012] Furthermore, it includes an annular base, two vertical support plates are symmetrically welded to the top of the annular base, a drive assembly is fixedly mounted on the top portion of one of the vertical support plates, a longitudinal worm shaft is rotatably mounted on the top portion of the vertical support plate, and a power output shaft of the drive assembly is connected to the longitudinal worm shaft through a coupling; Two short rotating shafts are symmetrically fixed to the middle part of the outer periphery of the protective shell, and the head end of one of the short rotating shafts is fixedly sleeved with a worm gear, and the longitudinal worm shaft is engaged with the worm gear for transmission. The two short rotating shafts are corresponding to the top end parts of the two vertical support plates and rotate through them.

[0013] Furthermore, a spiral induction coil is mounted on the periphery of the melt crucible, a gap is maintained between the spiral induction coil and the melt crucible, and four sets of vertical mounting plates made of insulating material are fixedly connected to the periphery of the melt crucible; Each set of vertical mounting plates consists of two vertical mounting plates spaced apart from each other. The molten material crucible is located between each two vertical mounting plates and is locked between each two vertical mounting plates by a screw and a nut.

[0014] Furthermore, the following process is included: S1. Preparation before use: Load the metal raw material to be heated and melted into the melt crucible, then start the lifting motor. The lifting motor can drive the thread drive assembly to rotate forward through the driving gear and the driven gear. When the thread drive assembly rotates forward, it pushes the vertical support thread shaft and the circular cover plate to slide downward, and press the circular cover plate to seal the top opening of the melt crucible; S2. Melting the metal raw material into a melt: starting the spiral induction coil. After the spiral induction coil is energized and started, the alternating magnetic field generated by the spiral induction coil heats the metal raw material in the melt crucible. When the heating temperature reaches the melting point of the metal raw material, the metal raw material begins to melt. S3. Refining the molten metal: After melting, the refining stage begins. During the refining process, the heating temperature is continuously controlled, and refining agents are added to the molten metal to remove harmful impurities, gases, and oxides. The refining time is determined by the type of metal and the quality requirements, and is generally 10-30 minutes. S4. Adding materials: During the refining process, appropriate amounts of alloying elements or additives should be added as needed to adjust the composition and properties of the metal. When adding materials, attention should be paid to adding them evenly to avoid local uneven composition. S5. Casting preparation: When the molten metal reaches the specified temperature and composition requirements, it is ready for casting. The circular cover is raised and opened, the protective shell and the melt crucible are tilted, and the top opening of the melt crucible is tilted to a downward tilted posture. At this time, the melted molten metal can be poured into the casting equipment, such as a ladle, die-casting machine, etc. During the transfer process, care must be taken to maintain the temperature and fluidity of the molten metal to avoid heat loss and solidification of the molten metal. S6. Casting: According to the shape and size requirements of the product, select the appropriate casting method and mold, cast the molten metal into the mold, and shape it into the required product or blank; during the casting process, the casting speed and pressure must be controlled to ensure that the molten metal fills the mold cavity and avoid defects such as pores and shrinkage holes; S7. Cooling and demoulding: After casting is completed, the mold is cooled to allow the metal product to solidify and form as quickly as possible; the cooling method can be natural cooling, air cooling or water cooling, and the appropriate cooling method is selected according to the product requirements and material properties; after cooling to a certain temperature, demoulding is carried out to take out the formed metal product.

[0015] The energy-saving melting and casting equipment and the melting process thereof provided by the present invention have the following beneficial effects: 1. When heating the metal raw materials, the circular cover plate needs to be lowered to cover the top opening of the melt crucible to prevent the heating heat from being lost too quickly through the open top opening, which would increase the heating energy consumption of the melting and casting equipment. This can make the melting and casting equipment have a certain energy-saving effect.

[0016] 2. The downward stroke and time generated when the hexagonal sliding shaft compresses the spring can provide redundant time for the stopping operation of the inching control lifting motor, so that the staff can have enough reaction time to release the inching control button to cut off the power to the lifting motor and stop it. Compared with the existing technology of directly fixing the threaded drive assembly to the circular cover plate, this can avoid the situation where the staff does not have enough time to stop the lifting motor when the circular cover plate has been pushed and pressed against the top opening of the molten crucible, causing the lifting motor to continue to rotate and push the threaded drive assembly to continue to slide down, pressing the circular cover plate to deform or causing the lifting motor to overload and burn under the static blocking limit of the circular cover plate, which helps to implement damage protection for the circular cover plate and the lifting motor during use.

[0017] 3. Through the design of the sliding fit between the hexagonal sliding shaft and the U-shaped connecting frame and the compression and pushing effect of the spring on the hexagonal sliding shaft, when the circular cover is closed, it can be stably compacted and sealed while preventing it from being bent and deformed by interference pressure, thereby improving the reliability and practicality of the circular cover switch operation.

[0018] Fourth, the synchronous driving part can fix the three U-shaped positioning parts together, and the synchronous driving part can be sliding in the direction away from the vertical support threaded shaft to drive the three U-shaped positioning parts to slide synchronously in the same direction and be pulled out from the insertion block and the two connecting blocks, thereby loosening the circular cover plate from the vertical support threaded shaft and the two vertical limit shafts. This can save the trouble of pulling out the three U-shaped positioning parts step by step when disassembling, cleaning, repairing or replacing the circular cover plate, and help improve the efficiency and convenience of loosening and disassembling the circular cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0020] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached figure: Figure 1 A schematic diagram showing the front side view of the present invention as a whole is shown; Figure 2 A schematic diagram showing the back side view of the present invention as a whole is shown; Figure 3 A schematic diagram showing the disassembled state of the protective housing in the present invention is shown; Figure 4 The present invention shows Figure 3 Schematic diagram of the structure of part A; Figure 5 A schematic diagram showing the disassembled state of the vertical limiting shaft and the threaded drive assembly of the present invention is shown; Figure 6 A schematic diagram showing the installation position of the spiral induction coil in the present invention is shown; Figure 7 A schematic diagram showing a top view of a circular cover plate in the present invention is shown; Figure 8 The present invention shows Figure 7 Schematic diagram of the enlarged structure of part B.

[0022] List of reference numerals: 1. Protective housing; 101. Short rotating shaft; 102. Worm gear; 103. Annular cover; 2. Annular base; 201. Vertical support plate; 2011. Longitudinal worm shaft; 3. Spiral induction coil; 4. Circular cover; 401. Japanese-shaped positioning frame; 402. U-shaped positioning piece; 4021. Limiting ring; 403. Rectangular slot; 5. U-shaped vertical support frame; 501. Vertical limiting shaft; 5011. Connecting block; 502. Vertical support threaded shaft; 5021. Limiting plate; 5022. Hexagonal sliding shaft; 5023. Stop plate; 503. Threaded drive assembly; 5031. Threaded sleeve; 5032. Driven gear; 5033. Stop ring; 504. E-shaped mounting piece; 6. Lifting motor; 601. Driving gear; 7. Synchronous drive member; 701. Longitudinal connecting rod; 8. U-shaped connecting frame; 801. Insert block; 9. Melt crucible; 901. Vertical mounting plate; 10. Drive assembly. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the described 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.

[0024] Please refer to Figures 1 to 8 ; Example 1: This embodiment provides an energy-saving melting and casting device, comprising a U-shaped vertical support frame 5 and a circular cover plate 4. Two vertical limit shafts 501 are symmetrically and slidably installed on the horizontal side bars of the U-shaped vertical support frame 5, and a threaded drive assembly 503 is rotatably installed on the horizontal side bars. The threaded drive assembly 503 consists of a threaded sleeve 5031 and a driven gear 5032 and a retaining ring 5033 welded to the top and bottom ends of the threaded sleeve 5031; a vertical support threaded shaft 502 is installed on the threaded sleeve 5031 in the form of a threaded screw, and a limiting disk 5021 is welded to the bottom end of the vertical support threaded shaft 502. A hexagonal sliding shaft 5022 is welded and hoisted on the bottom side of the limiting disk 5021, and a retaining disk 5023 is welded to the bottom end of the hexagonal sliding shaft 5022; a U-shaped connecting frame 8 is slidably installed on the hexagonal sliding shaft 5022, and a spring is installed on the partial compression sleeve of the hexagonal sliding shaft 5022 located between the U-shaped connecting frame 8 and the limiting disk 5021; the circular cover plate 4 is fixedly connected to the two vertical limiting shafts 501 and the U-shaped connecting frame 8.

[0025] Preferably, the threaded sleeve 5031 is rotatably engaged with the middle portion of the transverse side rod of the U-shaped vertical support frame 5 , and the driven gear 5032 and the retaining ring 5033 are in contact with the upper and lower sides of the transverse side rod respectively.

[0026] Preferably, a connecting block 5011 is welded to the bottom end of the vertical limit shaft 501, and an insert block 801 is welded to the bottom end of the U-shaped connecting frame 8; three sun-shaped positioning frames 401 are welded and arranged on the top of the circular cover plate 4, and a U-shaped positioning piece 402 is slidably installed on the top of the sun-shaped positioning frame 401 in the form of a spring push positioning, and a rectangular slot 403 is formed between the middle connecting plate inside the sun-shaped positioning frame 401 and a short side plate of the sun-shaped positioning frame 401, and the insert block 801 and the two connecting blocks 5011 are respectively plugged into and matched with the three rectangular slots 403.

[0027] Preferably, the head ends of the two longitudinal side shafts of the two outer U-shaped positioning members 402 correspond to the two connecting blocks 5011 for insertion and fit, and the head ends of the two longitudinal side shafts of the middle U-shaped positioning member 402 correspond to the insertion blocks 801 for insertion and fit; a synchronous driving member 7 with a cross-shaped structure is provided on the U-shaped positioning member 402, and a longitudinal connecting rod 701 is welded to the inner middle position of the U-shaped part of the synchronous driving member 7, and the head ends of the longitudinal connecting rod 701 and the head ends of the two long horizontal side rods of the synchronous driving member 7 are respectively welded and fixed to the horizontal side plates of the three U-shaped positioning members 402.

[0028] Preferably, two limiting rings 4021 are symmetrically welded on the two longitudinal side shafts of the U-shaped positioning member 402, a spring for pushing the U-shaped positioning member 402 is sleeved on the longitudinal side shaft, and a compression clamp is placed between the limiting ring 4021 and the middle connecting plate.

[0029] Preferably, two E-shaped mounting members 504 are symmetrically welded on the horizontal side bars of the U-shaped vertical support frame 5, and an inverted lifting motor 6 is fixedly connected between the top parts of the two E-shaped mounting members 504. A driving gear 601 is fixedly mounted on the rotating shaft of the lifting motor 6, and the driving gear 601 is engaged with the driven gear 5032 for transmission.

[0030] Preferably, it also includes a protective shell 1, in which a molten material crucible 9 is fixedly inserted, and the circular cover plate 4 slides downward and engages with the molten material crucible 9; the bottom plate of the molten material crucible 9 is welded and fixed to the bottom plate of the protective shell 1, and the top part of the molten material crucible 9 protrudes from the protective shell 1, and an annular cover plate 103 is fixed between the top of the circumferential side wall of the protective shell 1 and the molten material crucible 9.

[0031] Preferably, it also includes an annular base 2, two vertical support plates 201 are symmetrically welded on the top of the annular base 2, the top part of one vertical support plate 201 is fixedly installed with a drive assembly 10, and the top part of the vertical support plate 201 is rotatably installed with a longitudinal worm shaft 2011, and the power output shaft of the drive assembly 10 is connected to the longitudinal worm shaft 2011 through a coupling; the middle part of the outer periphery of the protective shell 1 is symmetrically fixed with two short rotating shafts 101, and the head end of one of the short rotating shafts 101 is fixedly sleeved with a worm gear 102, and the longitudinal worm shaft 2011 is meshed with the worm gear 102 for transmission, and the two short rotating shafts 101 correspond to the topmost parts of the two vertical support plates 201 and rotate through them.

[0032] Preferably, a spiral induction coil 3 is mounted on the periphery of the molten crucible 9, and a gap is maintained between the spiral induction coil 3 and the molten crucible 9. Four groups of vertical mounting plates 901 made of insulating material are fixedly connected to the periphery of the molten crucible 9; each group of vertical mounting plates 901 is composed of two vertical mounting plates 901 spaced apart inside and outside, and the molten crucible 9 is located between each two vertical mounting plates 901, and is locked between each two vertical mounting plates 901 by a screw and a nut; the spiral induction coil 3 needs to be used in conjunction with an external medium frequency power supply. The model selection of the medium frequency power supply, the connection and wiring method between the medium frequency power supply and the spiral induction coil 3, and the control principle of the spiral induction coil 3 are all existing technologies for personnel in this field engaged in equipment electrification transformation, upgrading, testing and maintenance, so they will not be described here.

[0033] The following is a detailed explanation of the specific details, implementation steps, functions and interrelationships of the above features, as well as their role in implementing this technical solution: The melt crucible 9 is used to hold metal raw materials to be heated and melted; the spiral induction coil 3 is used to heat and melt the metal raw materials held in the melt crucible 9 through the alternating magnetic field generated by it after being energized.

[0034] The three U-shaped positioning members 402 can respectively connect the insert block 801 and the two connecting blocks 5011 with the three sun-shaped positioning frames 401 to position them together, so that the circular cover plate 4 is fixedly connected with the two vertical limit shafts 501 and the vertical support threaded shaft 502. When the insert block 801 is connected and positioned with the sun-shaped positioning frame 401 in the middle position, the vertical support threaded shaft 502 can be torsionally limited by the hexagonal sliding shaft 5022. When the vertical support threaded shaft 502 is in a torsionally limited state, the forward and reverse rotating threaded driving assembly 503 can drive the vertical support threaded shaft 502 to slide up and down. When the vertical support threaded shaft 502 slides up and down, it can drive the circular cover plate 4 to lift and slide. When the metal melt in the molten crucible 9 is tilted and discharged or when the metal raw material is loaded and fed, the circular cover plate 4 needs to be lifted upward to open the top opening of the molten crucible 9. When heat is applied, the circular cover plate 4 needs to be lowered and sealed on the top opening of the molten crucible 9 to prevent the heating heat from being lost and dissipated too quickly through the open top opening, which would additionally increase the heating energy consumption of the smelting and casting equipment. This can enable the smelting and casting equipment to have a certain energy-saving effect. When the vertical support threaded shaft 502 is pushed to slide upward, the baffle 5023 abuts against the top middle part of the U-shaped connecting frame 8. At this time, through the blocking and limiting effect of the baffle 5023, the vertical support threaded shaft 502 can pull and drive the U-shaped connecting frame 8 and the circular cover plate 4 to slide upward synchronously, thereby driving the circular cover plate 4 upward. When the vertical support threaded shaft 502 is pushed to slide downward, the baffle 5023 also abuts against the top middle part of the U-shaped connecting frame 8. At this time, the circular cover plate 4 and the U-shaped connecting frame 8 can rely on their gravity to follow the vertical support threaded shaft 502 and the baffle 5023 to slide down together, thereby realizing the downward driving of the vertical support threaded shaft 502 on them.

[0035] Through the meshing transmission of the driving gear 601 and the driven gear 5032, the lifting motor 6 can drive the threaded driving assembly 503 to rotate forward and reverse, providing the driving force for the lifting switch of the circular cover 4, and the lifting motor 6 adopts inching control; because the lifting motor 6 adopts inching control, it is difficult to accurately control the accuracy of its pushing the circular cover 4 up and down. As the circular cover 4 is driven to slide down and press against the top opening of the molten crucible 9, the lifting motor 6 may still continue to rotate and push the threaded driving assembly 503 to continue to move downward. At this time, since the circular cover 4 and the U-shaped connecting frame 8 have stopped sliding down under the blocking limit of the top opening of the molten crucible 9, the threaded driving assembly 503 can slide down to drive the hexagonal sliding shaft 5022 and the U-shaped connecting frame 8 to slide relative to each other. When the hexagonal sliding shaft 5022 continues to slide down, the limit plate 5021 compresses the spring mounted thereon. At this time, the compressed spring can rely on the downward pressure indirectly exerted on it by the threaded driving assembly 503 to tightly compact the circular cover 4. The top opening of the molten crucible 9 is effectively compressed and sealed to ensure that the circular cover plate 4 has the effect of shielding and preventing the heat inside the molten crucible 9 from being lost. The downward stroke and the required time generated when the hexagonal sliding shaft 5022 compresses the spring can provide redundant time for the stop operation of the jog control lifting motor 6, so that the staff can have enough reaction time to release the jog control button to cut off the power to the lifting motor 6 and stop it. Compared with the existing technology of directly fixing the threaded drive component 503 to the circular cover plate 4, this can avoid the situation where the staff does not have enough time to stop the lifting motor 6 when the circular cover plate 4 has been pushed and pressed against the top opening of the molten crucible 9, causing the lifting motor 6 to continue to rotate and push the threaded drive component 503 to continue to slide down, pressing the circular cover plate 4 to deform or causing the lifting motor 6 to be overloaded and burned under the static blocking limit of the circular cover plate 4, which helps to implement damage protection for the circular cover plate 4 and the lifting motor 6 during use.

[0036] Through the design of the sliding fit between the hexagonal sliding shaft 5022 and the U-shaped connecting frame 8 and the compression and pushing effect of the spring on the hexagonal sliding shaft 5022, when the circular cover 4 is closed, it can be stably compacted and sealed while ensuring that it is not bent and deformed by interference pressure, thereby improving the reliability and practicality of the switching operation of the circular cover 4.

[0037] The synchronous drive member 7 can fix the three U-shaped positioning members 402 together, and slide the synchronous drive member 7 in the direction away from the vertical support threaded shaft 502, which can drive the three U-shaped positioning members 402 to slide synchronously in the same direction, and be pulled out from the insertion block 801 and the two connecting blocks 5011, thereby loosening the circular cover plate 4 from the vertical support threaded shaft 502 and the two vertical limit shafts 501. This can save the trouble of pulling out the three U-shaped positioning members 402 step by step when disassembling, cleaning, repairing or replacing the circular cover plate 4, and helps to improve the efficiency and convenience of loosening and disassembling the circular cover plate 4.

[0038] The drive assembly 10 is composed of a motor and a reducer. Through the worm gear mechanism composed of the longitudinal worm shaft 2011 and the worm wheel 102, the drive assembly 10 can rotate forward and reverse to drive the protective shell 1 and the melt crucible 9 to tilt up and down. When the top opening of the melt crucible 9 is tilted upward to an upright posture, it is used to heat and melt the metal raw material. When the top opening of the melt crucible 9 is tilted to a downward tilted posture, it is used to pour the metal solution in the melt crucible 9; the worm gear mechanism can position the tilted melt crucible 9 in real time through its self-locking feature.

[0039] Implementation 2: This implementation is based on implementation 1 and adds the following content compared to implementation 1: This embodiment proposes a smelting process, which is applied to the energy-saving smelting and casting equipment of the first embodiment, and includes the following process flow: S1. Preparation before use: Load the metal raw material to be heated and melted into the melt crucible 9, then start the lifting motor 6. The lifting motor 6 can drive the screw drive assembly 503 to rotate forward through the driving gear 601 and the driven gear 5032. When the screw drive assembly 503 rotates forward, it pushes the vertical support screw shaft 502 and the circular cover plate 4 to slide downward, and press the circular cover plate 4 against the top opening of the melt crucible 9; S2. Melting the metal raw material into a melt: activating the spiral induction coil 3. After the spiral induction coil 3 is energized and activated, the alternating magnetic field generated by the spiral induction coil 3 heats the metal raw material in the melt crucible 9. When the heating temperature reaches the melting point of the metal raw material, the metal raw material begins to melt. S3. Refining the molten metal: After melting, the refining stage begins. During the refining process, the heating temperature is continuously controlled, and refining agents are added to the molten metal to remove harmful impurities, gases, and oxides. The refining time is determined by the type of metal and the quality requirements, and is generally 10-30 minutes. S4. Adding materials: During the refining process, appropriate amounts of alloying elements or additives should be added as needed to adjust the composition and properties of the metal. When adding materials, attention should be paid to adding them evenly to avoid local uneven composition. S5. Casting preparation: When the molten metal reaches the specified temperature and composition requirements, it is ready for casting. The circular cover 4 is raised and opened, the protective housing 1 and the melt crucible 9 are tilted, and the top opening of the melt crucible 9 is tilted downward. At this time, the molten metal can be poured into the casting equipment, such as a ladle, a die-casting machine, etc. During the transfer process, it is important to maintain the temperature and fluidity of the molten metal to avoid heat loss and solidification of the molten metal. S6. Casting: According to the shape and size requirements of the product, select the appropriate casting method and mold, cast the molten metal into the mold, and shape it into the required product or blank; during the casting process, the casting speed and pressure must be controlled to ensure that the molten metal fills the mold cavity and avoid defects such as pores and shrinkage holes; S7. Cooling and demoulding: After casting is completed, the mold is cooled to allow the metal product to solidify and form as quickly as possible; the cooling method can be natural cooling, air cooling or water cooling, and the appropriate cooling method is selected according to the product requirements and material properties; after cooling to a certain temperature, demoulding is carried out to take out the formed metal product.

[0040] In this article, there are several points to note: 1. The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0041] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to form new embodiments.

[0042] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An energy-saving melting and casting device, comprising a U-shaped vertical support frame (5) and a circular cover plate (4). On the horizontal side rod of the U-shaped vertical support frame (5), two vertical limiting shafts (501) are symmetrically and slidably installed through. A threaded driving component (503) is rotatably arranged on this horizontal side rod; It is characterized by: The threaded driving component (503) is jointly composed of a threaded sleeve (5031), driven gears (5032) welded to the top and bottom ends of the threaded sleeve (5031), and a retaining ring (5033). A vertical support threaded shaft (502) is installed through the threaded sleeve (5031) in a threaded screwing manner. A limiting disc (5021) is welded to the bottom end of the vertical support threaded shaft (502). A hexagonal sliding shaft (5022) is welded and suspended on the bottom side of the limiting disc (5021). A retaining disc (5023) is welded to the bottom end of the hexagonal sliding shaft (5022). A U-shaped connecting frame (8) is slidably installed on the hexagonal sliding shaft (5022). A spring is compression-fitted on the part of the hexagonal sliding shaft (5022) between the U-shaped connecting frame (8) and the limiting disc (5021). When the retaining disc (5023) slides upward, it abuts against the middle part of the top end of the U-shaped connecting frame (8). The circular cover plate (4) is fixedly connected to the two vertical limiting shafts (501) and the U-shaped connecting frame (8).

2. The energy-saving melting and casting equipment according to claim 1, characterized in that: The threaded sleeve (5031) is in rotational fit through the middle part of the horizontal side rod of the U-shaped vertical support frame (5), and the driven gears (5032) and the retaining ring (5033) are respectively in abutting contact with the upper and lower sides of this horizontal side rod.

3. The energy-saving melting and casting equipment according to claim 1, characterized in that: A connecting block (5011) is welded to the bottom end of the vertical limiting shaft (501), and a plug block (801) is welded to the bottom end of the U-shaped connecting frame (8); Three rectangular positioning frames (401) are welded and arranged on the top of the circular cover plate (4). A U-shaped positioning member (402) is slidably installed through the rectangular positioning frames (401) in a spring-pushed positioning manner. A rectangular slot (403) is formed at an interval between the middle connecting plate inside the rectangular positioning frames (401) and a short side plate of the rectangular positioning frames (401). The plug block (801) and the two connecting blocks (5011) are respectively in plug-in fit with the three rectangular slots (403).

4. The energy-saving melting and casting equipment according to claim 3, characterized in that: The first ends of the two longitudinal side shafts of the two outer U-shaped positioning members (402) are correspondingly in through plug-in fit with the two connecting blocks (5011), and the first ends of the two longitudinal side shafts of the U-shaped positioning member (402) in the middle position are in through plug-in fit with the plug block (801); A U-shaped synchronous driving member (7) is arranged on the U-shaped positioning member (402). A longitudinal connecting rod (701) is welded at the middle position inside the U-shaped part of the synchronous driving member (7). The first end of the longitudinal connecting rod (701) and the first ends of the two long horizontal side rods of the synchronous driving member (7) are respectively welded and fixed to the horizontal side plates of the three U-shaped positioning members (402).

5. The energy-saving melting and casting equipment according to claim 3, characterized in that: Two limiting rings (4021) are symmetrically welded on the two longitudinal side shafts of the U-shaped positioning member (402). The spring for pushing the U-shaped positioning member (402) is sleeved on this longitudinal side shaft and is compression-clamped between the limiting ring (4021) and the middle connecting plate.

6. The energy-saving melting and casting equipment according to claim 1, characterized in that: Two E-shaped mounting members (504) are symmetrically welded on the transverse side bars of the U-shaped vertical support frame (5), and an inverted lifting motor (6) is fixedly connected between the top portions of the two E-shaped mounting members (504). A driving gear (601) is fixedly mounted on the rotating shaft of the lifting motor (6), and the driving gear (601) is meshed with the driven gear (5032) for transmission.

7. The energy-saving melting and casting equipment according to claim 1, characterized in that: It also includes a protective shell (1), wherein a molten material crucible (9) is fixedly inserted inside the protective shell (1), and the circular cover (4) is engaged with the molten material crucible (9) when sliding downward; The bottom plate of the molten material crucible (9) is welded and fixed to the bottom plate of the protective shell (1), the top portion of the molten material crucible (9) protrudes from the protective shell (1), and an annular cover plate (103) is fixedly connected between the top of the circumferential side wall of the protective shell (1) and the molten material crucible (9).

8. The energy-saving melting and casting equipment according to claim 7, characterized in that: The device further comprises an annular base (2), wherein two vertical support plates (201) are symmetrically welded to the top of the annular base (2), a driving assembly (10) is fixedly mounted on the top portion of one vertical support plate (201), a longitudinal worm shaft (211) is rotatably mounted on the top portion of the vertical support plate (201), and a power output shaft of the driving assembly (10) is connected to the longitudinal worm shaft (211) via a coupling; Two short rotating shafts (101) are symmetrically fixedly connected to the middle portion of the outer periphery of the protective shell (1), the head end of one of the short rotating shafts (101) is fixedly sleeved with a worm gear (102), the longitudinal worm shaft (2011) is meshed with the worm gear (102) for transmission, and the two short rotating shafts (101) are correspondingly penetrated and rotated with the top end portions of the two vertical support plates (201).

9. The energy-saving melting and casting equipment according to claim 7, characterized in that: The outer periphery of the melt crucible (9) is sheathed with a spiral induction coil (3), a gap is maintained between the spiral induction coil (3) and the melt crucible (9), and the outer periphery of the melt crucible (9) is fixedly connected with four groups of vertical mounting plates (901) made of insulating material; Each set of vertical mounting plates (901) is composed of two vertical mounting plates (901) spaced apart from each other. The melt crucible (9) is located between each two vertical mounting plates (901) and is locked between each two vertical mounting plates (901) by means of a screw and a nut.

10. A smelting process, applied to an energy-saving smelting and casting equipment according to any one of claims 1 to 9, characterized in that: Including the following process: S1. Preparation before use: Load the metal raw material to be heated and melted into the melt crucible (9), then start the lifting motor (6), which can drive the thread drive assembly (503) to rotate forward through the driving gear (601) and the driven gear (5032), and when the thread drive assembly (503) rotates forward, it drives the vertical support thread shaft (502) and the circular cover plate (4) to slide downward, and press the circular cover plate (4) to seal the top opening of the melt crucible (9); S2. Melting the metal raw material into a melt: starting the spiral induction coil (3). After the spiral induction coil (3) is powered on and started, the metal raw material in the melt crucible (9) is heated by the alternating magnetic field generated by the spiral induction coil (3). When the heating temperature reaches the melting point of the metal raw material, the metal raw material begins to melt. S3. Refining the molten metal: After melting, the refining stage begins. During the refining process, the heating temperature is continuously controlled, and refining agents are added to the molten metal to remove harmful impurities, gases, and oxides. The refining time is determined by the type of metal and the quality requirements, and is generally 10-30 minutes. S4. Adding materials: During the refining process, appropriate amounts of alloying elements or additives should be added as needed to adjust the composition and properties of the metal. When adding materials, attention should be paid to adding them evenly to avoid local uneven composition. S5. Casting preparation: When the molten metal reaches the specified temperature and composition requirements, it is ready for casting; the circular cover (4) is raised and opened, the protective housing (1) and the melt crucible (9) are tilted, and the top opening of the melt crucible (9) is tilted to a downward tilted posture. At this time, the molten metal can be poured into a casting device, such as a ladle, a die-casting machine, etc.; During the transfer process, care must be taken to maintain the temperature and fluidity of the molten metal to avoid heat loss and solidification of the molten metal; S6. Casting: According to the shape and size requirements of the product, select the appropriate casting method and mold, cast the molten metal into the mold, and shape it into the required product or blank; during the casting process, the casting speed and pressure must be controlled to ensure that the molten metal fills the mold cavity and avoid defects such as pores and shrinkage holes; S7. Cooling and demoulding: After casting is completed, the mold is cooled to allow the metal product to solidify and form as quickly as possible; the cooling method can be natural cooling, air cooling or water cooling, and the appropriate cooling method is selected according to the product requirements and material properties; after cooling to a certain temperature, demoulding is carried out to take out the formed metal product.

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