Continuous casting device for machining high-quality copper castings

Abstract

The invention belongs to the relevant technical field of casting forming, and particularly discloses a continuous casting device for high-quality copper casting machining, which comprises a rack, a die-casting mechanism is arranged at the top of the inner side of the rack, a lower die holder is arranged below the inner side of the rack, and a cooling box is arranged in the lower die holder. A water injection pipe is installed at one end of the interior of the cooling box in a communicating mode and extends out of the lower die base, a cooling turbulence circulation mechanism is arranged in the cooling box, a die is arranged on the upper surface of the cooling box, and the cooling turbulence circulation mechanism comprises a top cover fixedly arranged on the top wall of the inner side of the cooling box. A cooling air box is in threaded connection with the lower portion of the outer portion of the top cover, and recoil mechanisms are arranged in the cooling air box at equal intervals in the circumferential direction, a mold in a mold cavity can be fully cooled, cooling water is used for conducting turbulent flow guiding on the mold cavity, and demolding is conducted on a forming mold in the later period.

Description

Technical Field

[0001] The invention belongs to the technical field related to casting and molding, and specifically discloses a continuous casting device for processing high-quality copper castings. Background Art

[0002] In the field of copper casting production, continuous casting technology is widely used in aerospace, precision instruments, automobile manufacturing and other fields with strict requirements on casting quality because it can achieve efficient and large-scale production. Copper and copper alloys (such as brass and bronze) have excellent electrical conductivity, thermal conductivity and mechanical properties, but there are two core technical difficulties in the casting process: First, copper has a high melting point (about 1083°C), and the mold needs to be cooled quickly and evenly after the molten metal is filled. Otherwise, it is easy to produce defects such as shrinkage holes and cracks due to insufficient cooling speed; second, copper castings often require high precision (dimensional tolerance ≤±0.02mm) and low surface roughness (Ra≤1.6μm). Traditional demolding methods are prone to deformation of castings or surface scratches due to uneven force; The cooling systems of existing continuous casting devices have significant limitations: the mold is usually cooled by an internal water channel system. Cold water flows through these pipes, absorbs heat from the mold, and then discharges it, thereby reducing the mold temperature.

[0003] Existing water channels are distributed over a large area, but their heat absorption efficiency is low and the contact surface is small, resulting in poor cooling performance. Furthermore, the diameter and distribution density of the water channels also affect cooling effectiveness. A smaller diameter may increase water flow velocity, but it also increases pressure drop, requiring higher pumping pressure. A higher distribution density results in more uniform cooling, but this also complicates the design and increases costs, so improvements are needed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the background technology, and to propose a continuous casting device for processing high-quality copper castings, comprising a frame, a die-casting mechanism is provided on the top inner side of the frame, a lower die seat is provided on the lower inner side of the frame, a cooling box is provided inside the lower die seat, one end of the interior of the cooling box is connected to a water injection pipe, the water injection pipe extends to the outside of the lower die seat, a cooling turbulent circulation mechanism is provided inside the cooling box, a mold is provided on the upper surface of the cooling box, the cooling turbulent circulation mechanism includes a top cover fixedly provided on the inner top wall of the cooling box, a cooling air box is threadedly connected to the lower outer side of the top cover, and a recoil mechanism is provided inside the cooling air box at equal distances along the circumferential direction; The cooling turbulence circulation mechanism is used to guide the cooling water so that the cooling water increases the contact area with the bottom of the mold and takes away the heat after die-casting.

[0005] Preferably, the die-casting mechanism includes an upper die seat, both sides of the outer wall of the upper die seat are fixedly connected to the inner top wall of the frame through corresponding suspension frames, and a pouring pipe is installed on the upper part of the upper die seat and the frame.

[0006] Preferably, support plates are respectively provided on both sides of the outer wall of the lower die base, and hydraulic cylinders are provided on the lower surfaces of the two support plates, and the bottoms of the hydraulic cylinders are fixedly provided on the inner bottom of the frame.

[0007] Preferably, connecting plates are connected to both sides of the interior of the cooling air box through symmetrically arranged telescopic cylinders, an extension column is provided in the middle of the bottom of the cooling air box, one end of the connecting plate is slidably fitted with the outer surface of the extension column, and a ring rod is provided at the end of the connecting plate away from the extension column, and a flow blocking mechanism is provided below one side of the outside of the ring rod corresponding to the recoil mechanism, and a spoiler mechanism is provided inside the cooling box and below the extension column.

[0008] Preferably, the recoil mechanism includes a bent pipe nozzle connected and installed inside the cooling air box, a chuck is mounted on the outside of the bent pipe nozzle, a mounting groove is provided inside the chuck, a clamping shaft is rotatably arranged inside the mounting groove, a cold air inlet pipe is connected and installed on one side of the cooling air box, and one end of the cold air inlet pipe extends to the top of the outside of the lower mold base.

[0009] Preferably, the flow blocking mechanism includes two rocker arms, and one end of the two rocker arms is rotatably provided with a mounting seat, and the mounting seat is installed on the outside of the ring rod, and the two rocker arms are commonly provided with a sliding column at one end away from the mounting seat, and an arc-shaped guide frame is provided on the outside of the sliding column, and a guide plate is provided above the outside of the arc-shaped guide frame, and an arc track adapted for the sliding of the sliding column is provided inside the arc-shaped guide frame, one end of the guide plate is rotatably connected to the outside of the card shaft, and a top mold assembly is provided on the edge of the end of the guide plate away from the card shaft.

[0010] Preferably, the top mold assembly includes a movable push rod arranged on the edge of one end of the guide plate away from the clamping shaft, and a push rod is arranged above the movable push rod, and the push rod is slidably installed inside the cooling box and the mold together.

[0011] Preferably, the spoiler mechanism includes a rotating shaft rotatably installed inside the cooling box and close to the bottom of the extension column, a motor is provided at the lower end of the rotating shaft, and the lower part of the outside of the motor is fixed to the bottom of the lower mold base by a clamping ring, and a ring sleeve is provided above the outside of the rotating shaft, and spoiler push plates are provided on the outside of the ring sleeve at equal distances along the circumference.

[0012] Preferably, a cooling contact plate is provided on the inner top wall of the cooling box, and a U-shaped winding tube is provided on the lower edge of the cooling contact plate. A cooling water inlet pipe and a cooling water discharge pipe are respectively connected and installed at both ends of the U-shaped winding tube, and one end of the cooling water inlet pipe and the cooling water discharge pipe extend to the outside of the lower mold base.

[0013] Compared with the prior art, the present invention has the following beneficial effects: By setting a cooling box on the lower surface of the mold, cooling water can be injected into the inner cavity of the cooling box through the water injection pipe, and by injecting condensate into the cooling water inlet pipe, the U-shaped winding tube can continuously maintain the cooling effect and be used to cool the mold. The upper surface of the cooling box itself is fully fitted with the lower surface of the mold, which increases the contact area and makes the cooling more uniform.

[0014] By setting up a recoil mechanism, the cold air inlet pipe is connected with the external cold air pipeline, so that the cooling air flow is injected into the cooling air box, and the cold air with air pressure is sprayed onto the outer surface of the guide plate through the elbow nozzle. Since the outer surface of the guide plate is arranged in an arc surface, the gas sprays the water inside the cooling box, and the cold water is recoiled onto the top wall of the cooling box through the arc surface. As a result, when the cooling water is invaded by heat and evaporates less, the cold water can be used to recoil the cooling box top wall in this way, thereby enhancing the cooling effect of the remaining cooling water; And under the disturbance of the flow-turbulating mechanism, the cold water is stirred at the bottom of the cooling box, causing the cold water to form turbulence, allowing the cold water to flow inside the cooling box. The dynamic turbulence makes the cooling water continuously contact the high-temperature area, and the heat absorption efficiency is higher than the distribution of traditional water channels.

[0015] The connecting plate can be driven by the telescopic cylinder, so that the ring rod drives the mounting seat to move upward. Under the connection of the rocker arm, the sliding rod slides toward the inner end of the arc guide frame, prompting the movable supporting rod above the arc guide plate to press the ejector rod. After cooling is completed, the supporting force is evenly distributed in a circumferential pressing manner to help demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the overall connection structure of the present invention; Figure 3 This is a front view of the lower die base, the die, and the inner portion of the cooling box of the present invention; Figure 4 This is a schematic diagram of the connection between the lower mold base, the mold, and the inner part of the cooling box of the present invention; Figure 5 This is a schematic diagram of the connection structure of the inner part of the cooling box of the present invention; Figure 6 This is a schematic diagram of the connection and separation between the top cover, cooling air box, and spoiler mechanism of the present invention; Figure 7 This is a schematic diagram of the front view of the disassembled structure of the top cover and the recoil mechanism of the present invention; Figure 8 This is a schematic structural diagram of the recoil mechanism of the present invention; Figure 9This is a front view of the recoil mechanism structure of the present invention; Figure 10 It is a schematic diagram of the connection between the movable supporting rod and the push rod of the present invention.

[0017] In the figure: 1. frame; 2. suspension frame; 3. casting pipe; 4. motor; 5. hydraulic cylinder; 6. lower die base; 7. upper die base; 8. support plate; 9. mold; 10. top cover; 11. cooling contact plate; 12. cooling box; 13. retaining ring; 14. spoiler pusher; 15. cooling water inlet pipe; 16. cold air inlet pipe; 17. ejector rod; 18. ring sleeve; 19. cooling water discharge pipe; 20. U-shaped meandering pipe; 21. rotating shaft; 22. ring rod; 23. telescopic cylinder; 24. cooling air box; 25. connecting plate; 26. rocker arm; 27. guide plate; 28. elbow nozzle; 29. ​​clamping shaft; 30. movable rod; 31. arc guide frame; 32. mounting seat; 33. sliding column; 34. mounting groove; 35. chuck; 36. water injection pipe. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] like Figures 1-10 A continuous casting device for processing high-quality copper castings shown in FIG. 1 includes a frame 1, a die-casting mechanism is provided on the top inner side of the frame 1, a lower die base 6 is provided on the lower inner side of the frame 1, a cooling box 12 is provided inside the lower die base 6, a water injection pipe 36 is installed at one end of the cooling box 12, and the water injection pipe 36 extends to the outside of the lower die base 6, a cooling turbulent circulation mechanism is provided inside the cooling box 12, a mold 9 is provided on the upper surface of the cooling box 12, and the cooling turbulent circulation mechanism includes a top cover 10 fixedly provided on the inner top wall of the cooling box 12, a cooling air box 24 is threadedly connected to the lower outer side of the top cover 10, and a recoil mechanism is provided inside the cooling air box 24 at equal intervals along the circumferential direction; The cooling turbulence circulation mechanism is used to guide the cooling water so that the cooling water increases the contact area with the bottom of the mold 9 to take away the heat after die-casting.

[0021] The die-casting mechanism includes an upper die base 7, the outer walls of which are fixedly connected to the inner top wall of the frame 1 via corresponding hanging brackets 2. A pouring pipe 3 is installed above the upper die base 7 and the frame 1. The upper die base 7 cooperates with the lower die base 6 to form a closed die cavity. The hanger 2 fixes the upper die base 7 to the top of the frame 1 to ensure uniform pressure transmission during die casting. The pouring pipe 3 is connected to the external feeding pipe and is used to inject molten metal, thereby guiding the molten metal from the external furnace into the cavity of the mold 9 to complete the filling.

[0022] Support plates 8 are respectively provided on both sides of the outer wall of the lower die base 6. Hydraulic cylinders 5 are provided on the lower surfaces of the two support plates 8. The bottom of the hydraulic cylinder 5 is fixedly set on the bottom inner side of the frame 1. The hydraulic cylinder 5 drives the support plates 8 to rise and fall, driving the lower die base 6 and the upper die base 7 to close or separate, thereby realizing the opening and closing of the upper end of the mold 9.

[0023] The two sides of the interior of the cooling air box 24 are connected with connecting plates 25 through symmetrically arranged telescopic cylinders 23. An extension column is provided in the middle of the bottom of the cooling air box 24. One end of the connecting plate 25 slides and fits with the outer surface of the extension column. The end of the connecting plate 25 away from the extension column is jointly provided with a ring rod 22. A flow blocking mechanism is provided below one side of the outside of the ring rod 22 corresponding to the recoil mechanism, and a spoiler mechanism is provided inside the cooling box 12 and below the extension column.

[0024] The backwash mechanism includes a bend nozzle 28 connected to and installed inside the cooling air box 24, and a chuck 35 is provided on the outside of the bend nozzle 28. A mounting slot 34 is provided inside the chuck 35, and a clamping shaft 29 is rotatably provided inside the mounting slot 34. A cold air intake pipe 16 is connected to and installed on one side of the cooling air box 24, and one end of the cold air intake pipe 16 extends to the outside of the lower mold base 6. The flow blocking mechanism includes two rocker arms 26, one end of each rocker arm 26 is rotatably provided with a mounting seat 32, and the mounting seat 32 is installed on the outside of the ring rod 22. A sliding post 33 is commonly provided at one end of the two rocker arms 26 away from the mounting seat 32, and an arc guide frame 31 is provided outside the sliding post 33. A guide plate 27 is provided above the outer side of the arc guide frame 31, and an arc track adapted to the sliding of the sliding post 33 is provided inside the arc guide frame 31. One end of the guide plate 27 is rotatably connected to the outer side of the clamping shaft 29, and a top mold assembly is provided on the edge of the end of the guide plate 27 away from the clamping shaft 29; The cold air inlet pipe 16 is connected to the external cold air pipeline, and the cold air is injected into the cooling air box 24. The cold air is circumferentially distributed outside the cooling air box 24 through the curved pipe nozzle 28, and the nozzle faces the curved surface of the guide plate 27. The cold air injection generates a backwash water flow that impacts the top wall of the cooling box 12, which can fully utilize the remaining cooling water inside the cooling box 12.

[0025] The top mold assembly includes a movable push rod 30 arranged on the edge of one end of the guide plate 27 away from the clamping shaft 29, and a push rod 17 is arranged above the movable push rod 30. The push rod 17 is slidably installed inside the cooling box 12 and the mold 9 together. The telescopic cylinder 23 drives the connecting plate 25 to rise along the outer surface of the extension column, driving the ring rod 22 and the mounting seat 32 to move upward. The rise of the ring rod 22 causes the rocker arm 26 to rotate around the internal axis of the mounting seat 32. The rocker arm 26 pushes the sliding column 33 with one end rotating connection to slide inside the arc groove of the arc guide frame 31. Since one end of the guide plate 27 is rotated with the clamping shaft 29, when the sliding column 33 slides toward the other end of the arc groove, the guide plate 27 moves synchronously and pushes up one end; The upper end of the movable support rod 30 adopts a ball structure and is movably embedded in the lower part of the push rod 17. When the arc-shaped guide plate 27 is lifted, the ball slides under the inner part of the push rod 17 to avoid excessive friction. Since the push rod 17 is located inside the cooling box 12 and the mold 9 and moves in a vertical motion, the push rod 17 can lift the casting from the current position to help demolding.

[0026] The spoiler mechanism includes a rotating shaft 21 rotatably installed inside the cooling box 12 and near the bottom of the extension column. A motor 4 is provided at the lower end of the rotating shaft 21. The lower part of the outside of the motor 4 is fixed to the bottom of the lower mold base 6 by a clamping ring 13. A ring sleeve 18 is provided above the outside of the rotating shaft 21. The outer side of the ring sleeve 18 is provided with spoiler push pieces 14 at equal distances along the circumferential direction. The motor 4 drives the rotating shaft 21, the ring sleeve 18, and the spoiler push pieces 14 to rotate, so that the cooling water below the inside of the cooling box 12 forms dynamic turbulence, thereby improving the cooling uniformity.

[0027] A cooling contact plate 11 is provided on the top wall of the cooling box 12. A U-shaped meandering tube 20 is provided on the lower edge of the cooling contact plate 11. The two ends of the U-shaped meandering tube 20 are connected to a cooling water inlet pipe 15 and a cooling water discharge pipe 19, respectively. One end of the cooling water inlet pipe 15 and the cooling water discharge pipe 19 extend to the outside of the lower mold base 6. The cooling box 12 is located below the mold 9. The internal U-shaped meandering tube 20 extends the cooling water flow path and enhances the heat absorption efficiency. The upper part of the cooling contact plate 11 is in close contact with the lower surface of the mold 9, and heat is quickly dissipated through heat conduction. The U-shaped meandering pipe 20 is injected with external condensate through the cooling water inlet pipe 15 , and the condensate is subsequently discharged through the cooling water discharge pipe 19 .

[0028] Working principle: When in use, the hydraulic cylinder 5 drives the lower die base 6 to rise, and the mold 9 and the upper die base 7 are closed to form a mold cavity. After the upper die base 7 and the lower die base 6 are closed and pressure maintained, the molten metal is injected into the mold cavity through the pouring pipe 3. After the die casting is completed, it needs to be cooled and formed.

[0029] The water injection pipe 36 injects cooling water into the cooling box 12 until the water level reaches the outer surface of the U-shaped winding tube 20. At the same time, the cooling water inlet pipe 15 introduces condensate, which circulates inside the U-shaped winding tube 20, extending the flow path and cooperating with the cooling contact plate 11 to enhance the conductive cooling effect of the cold water, and can take away the heat generated by the mold 9. When the heat consumes the cooling water, the motor 4 drives the shaft 21 to rotate, prompting the ring sleeve 18 and the spoiler push piece 14 to move the cold water below the cooling box 12 toward the turbulent disturbance at the U-shaped winding tube 20, thereby enhancing the U-shaped winding. While improving the cooling effect of the curved tube 20, it promotes the flow of cooling water, increases the contact area of ​​the cooling water, and strengthens evaporative heat dissipation. The cold air inlet pipe 16 is connected to the external cold air pipeline. The injected air flow is ejected through multiple curved nozzles 28 arranged circumferentially. The direction of the air flow injection hits the cooling water on the curved surface of the curved guide plate 27. Under the guidance of the curved surface of the curved guide plate 27, the cold water below the cooling box 12 is backwashed to the top wall of the cooling box 12, so that when the cold water is insufficient, the remaining cold water can be fully utilized for cooling and the cooling effect can be continuously maintained. During demoulding, the telescopic cylinder 23 drives the connecting plate 25 to rise along the outer surface of the extension column, driving the ring rod 22 and the mounting seat 32 to move. The rise of the ring rod 22 causes the rocker arm 26 to rotate around the internal axis of the mounting seat 32, forcing the sliding column 33 to slide toward the inner side of the arc guide frame 31, pushing one end of the arc guide plate 27 upward, and the movable support rod 30 pushes the ejector rod 17 as the arc guide plate 27 rises. The ejector rod 17 slides inside the cooling box 12 and the mold 9, causing the ejector rod 17, which was originally set at the same level as the bottom of the mold 9, to tend to rise, and lift the casting inside the mold 9 with the circumferential support force, which helps to demould and avoid deformation or damage of the die-casting part caused by unilateral stress.

[0030] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the invention as claimed.

Claims

1. A continuous casting device for processing high-quality copper castings, comprising a frame (1), characterized in that: A die-casting mechanism is provided at the top of the inner side of the frame (1), a lower die seat (6) is provided at the lower inner side of the frame (1), a cooling box (12) is provided inside the lower die seat (6), one end of the interior of the cooling box (12) is connected to a water injection pipe (36), and the water injection pipe (36) extends to the outside of the lower die seat (6), a cooling turbulent circulation mechanism is provided inside the cooling box (12), a mold (9) is provided on the upper surface of the cooling box (12), and the cooling turbulent circulation mechanism includes a top cover (10) fixedly provided on the inner top wall of the cooling box (12), a cooling air box (24) is threadedly connected to the lower outer side of the top cover (10), and a recoil mechanism is provided inside the cooling air box (24) at equal distances along the circumferential direction; The recoil mechanism includes a bend nozzle (28) connected to and installed inside the cooling air box (24), a chuck (35) is provided on the outside of the bend nozzle (28), a mounting groove (34) is provided inside the chuck (35), a chuck shaft (29) is rotatably provided inside the mounting groove (34), a cold air inlet pipe (16) is connected to and installed on one side of the interior of the cooling air box (24), and one end of the cold air inlet pipe (16) extends to the outside and above the lower die base (6); The cooling turbulent circulation mechanism is used to guide the cooling water so that the cooling water increases the contact area with the bottom of the mold (9) and takes away the heat after die-casting.

2. A continuous casting device for processing high-quality copper castings according to claim 1, characterized in that: The die-casting mechanism comprises an upper die seat (7), both sides of the outer wall of the upper die seat (7) are fixedly connected to the inner top wall of the frame (1) via correspondingly arranged suspension frames (2), and a pouring material pipe (3) is installed above the upper die seat (7) and the frame (1).

3. The continuous casting device for processing high-quality copper castings according to claim 1, characterized in that: Support plates (8) are respectively provided on both sides of the outer wall of the lower die base (6), and hydraulic cylinders (5) are provided on the lower surfaces of the two support plates (8). The bottom of the hydraulic cylinder (5) is fixedly arranged on the inner bottom of the frame (1).

4. The continuous casting device for processing high-quality copper castings according to claim 1, characterized in that: The two sides of the interior of the cooling air box (24) are connected to corresponding connecting plates (25) through symmetrically arranged telescopic cylinders (23), an extension column is provided in the middle of the bottom of the cooling air box (24), one end of the connecting plate (25) is slidably fitted with the outer surface of the extension column, and the end of the connecting plate (25) away from the extension column is jointly provided with a ring rod (22), and a flow blocking mechanism is provided below one side of the outer side of the ring rod (22) corresponding to the recoil mechanism, and a flow spoiler mechanism is provided inside the cooling box (12) and below the extension column.

5. The continuous casting device for processing high-quality copper castings according to claim 4, characterized in that: The flow blocking mechanism comprises two rocker arms (26), one end of each of the two rocker arms (26) is rotatably provided with a mounting seat (32), the mounting seat (32) is installed on the outside of the ring rod (22), and the ends of the two rocker arms (26) away from the mounting seat (32) are jointly provided with a sliding column (33), an arc-shaped guide frame (31) is provided outside the sliding column (33), a guide plate (27) is provided above the outer side of the arc-shaped guide frame (31), and an arc-shaped track adapted for sliding of the sliding column (33) is provided inside the arc-shaped guide frame (31), one end of the guide plate (27) is rotatably connected to the outer side of the clamping shaft (29), and a top mold assembly is provided on the edge of the end of the guide plate (27) away from the clamping shaft (29).

6. The continuous casting device for processing high-quality copper castings according to claim 5, characterized in that: The top mold assembly includes a movable support rod (30) arranged on the edge of one end of the guide plate (27) away from the clamping shaft (29), and a push rod (17) is arranged above the movable support rod (30). The push rod (17) is slidably installed inside the cooling box (12) and the mold (9).

7. The continuous casting device for processing high-quality copper castings according to claim 4, characterized in that: The spoiler mechanism includes a rotating shaft (21) rotatably mounted inside the cooling box (12) and close to the bottom of the extension column, a motor (4) is provided at the lower end of the rotating shaft (21), and the lower portion of the motor (4) is fixed to the bottom of the lower die base (6) via a clamping ring (13) provided thereon, a ring sleeve (18) is provided above the outer portion of the rotating shaft (21), and spoiler push pieces (14) are provided at equal distances along the circumferential direction on the outer side of the ring sleeve (18).

8. The continuous casting device for processing high-quality copper castings according to claim 1, characterized in that: A cooling contact plate (11) is provided on the inner top wall of the cooling box (12), and a U-shaped winding tube (20) is provided on the lower edge of the cooling contact plate (11). The two ends of the U-shaped winding tube (20) are connected to a cooling water inlet pipe (15) and a cooling water discharge pipe (19), respectively. One end of the cooling water inlet pipe (15) and the cooling water discharge pipe (19) are extended to the outside of the lower mold base (6).

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