Downsizing device and process method in continuous casting

Abstract

This invention relates to the field of continuous casting technology and discloses a pressing device and process method in the continuous casting process. The pressing device includes a rapid solidification platform and a frame disposed on one side of the rapid solidification platform. The frame is equipped with a feeding assembly for conveying molten metal. A rolling assembly is disposed on the rapid solidification platform. The rolling assembly includes side rolls and a core roll, with a roll gap reserved between the side rolls and the core roll. A rotary drive assembly for driving the side rolls and the core roll is installed on the rapid solidification platform. This invention deeply integrates the processes of molten metal conveying, solidification, and shaping bending, and can directly and continuously prepare annular cold heading steel billets from molten metal without the need for billet pretreatment, multiple rolling, repeated clamping and positioning, etc., simplifying the production process, shortening the production cycle, significantly improving the production efficiency of cold heading steel billets, and adapting to the needs of large-scale and continuous production.

Description

Technical Field

[0001] This invention belongs to the field of steel continuous casting technology, specifically relating to the pressing device and process method in the continuous casting process. Background Technology

[0002] Cold heading steel is widely used in the manufacture of fasteners such as bolts, nuts, and screws, as well as cold-headed parts. It has stringent requirements for internal structure uniformity, surface quality, and cold heading performance.

[0003] The current cold heading steel forming process has the following core technical problems: the production of conventional ring-shaped cold heading steel billets relies on billet pretreatment, multiple rolling and bending forming, which is cumbersome and has low material utilization; existing continuous casting and rolling production lines are mostly simple series connections, and do not achieve deep synergy between casting and rolling based on the characteristics of cold heading steel; defects such as center segregation and porosity in continuously cast billets are difficult to completely weld or disperse in subsequent rolling, resulting in uneven internal structure of the finished product, affecting cold heading performance and mechanical stability; moreover, rolling and bending forming are carried out in separate steps, requiring multiple clamping and positioning, making it difficult to achieve integrated continuous hot forming from molten metal to ring-shaped billet, resulting in low production efficiency and poor quality stability. Summary of the Invention

[0004] The purpose of this invention is to provide a continuous thermoforming apparatus with a simple structure and reasonable design in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: The first aspect of the present invention provides a pressing device in a continuous casting process, including a rapid solidification platform and a frame disposed on one side of the rapid solidification platform, wherein a feeding assembly for conveying molten metal is disposed on the frame. The rapid solidification platform is equipped with a rolling assembly, which includes a side roll and a core roll, with a roll gap reserved between the side roll and the core roll. The rapid solidification platform is also equipped with a rotary drive assembly for driving the side roll and the core roll to rotate. The rapid solidification platform is connected to a support frame, and a shaping mechanism is connected to the support frame. The shaping mechanism includes a vertical drive assembly, a connecting strip, and a shaping plate rotatably connected to the drive end of the vertical drive assembly. Multiple pairs of shaping rollers are connected to the connecting strip, and a shaping gap is reserved between each pair of shaping rollers. One end of the connecting strip is fixedly connected to the support frame, and the other end is fixedly connected to the shaping plate. The feeding assembly delivers molten metal into the roll gap. The rotary drive assembly drives the side rolls and center rolls to rotate, rolling the molten metal in the roll gap and sequentially delivering it into the shaping gap. Then, while the vertical drive assembly drives the shaping plate to move up and down, the shaping plate is rotated, causing the rolled metal in the shaping gap to bend into a ring shape.

[0006] As a further optimization of the present invention, the rapid solidification platform is provided with adjusting blocks corresponding to the side rollers and the core roller. The rotary drive assembly includes two sets of actuator motors, the drive ends of the two sets of actuator motors are connected to universal joints, and the ends of the universal joints away from the actuator motors are connected to telescopic rods. The telescopic rods include fixed rods and movable rods. One end of the movable rod is slidably connected inside the fixed rod. The other ends of the two sets of movable rods pass through the corresponding adjusting blocks and are fixedly connected to the side rollers and the core roller, respectively. The rapid solidification platform is provided with a position adjustment mechanism for adjusting the height and tilt angle of the roller gap, side rollers, and core rollers.

[0007] As a further optimization of the present invention, the connecting strip is composed of multiple sets of column bars, with the ends of two adjacent sets of column bars rotatably connected. The surface of the shaping plate is provided with a slot corresponding to the multiple sets of column bars near the edge. Each set of column bars is fixedly connected to a roller corresponding to the slot. The end of the roller on the first column bar away from the column bar is rotatably connected to the support frame, and the end of the roller on the last column bar away from the column bar is rotatably connected to the slot. Except for the first set of column bars, the surface of each of the other sets of column bars away from the roller is fixedly connected to a mounting plate. Each pair of shaping rollers is mounted on the mounting plate.

[0008] As a further optimization of the present invention, each set of mounting plates is connected to a shaping gap adjustment component for adjusting the size of the shaping gap. The shaping gap adjustment component includes a rotating motor fixedly connected to the surface of the mounting plate. The surface of the mounting plate is provided with a sliding groove. The drive end of the rotating motor extends into the sliding groove and is fixedly connected to a double-headed screw. The surface of the double-headed screw is threaded with symmetrically arranged moving blocks. The moving blocks slide along the inner wall of the sliding groove. The two sets of moving blocks are respectively connected to a pair of shaping rollers.

[0009] As a further optimization of the present invention, the feeding assembly includes a drive motor, a heating box and a buffer tank. The outer side of the heating box is fixedly connected with symmetrically arranged rotating shafts, which are rotatably connected to the frame. One set of rotating shafts is fixedly connected to the drive motor at the end away from the heating box. The buffer tank is inclined and fixedly connected to the frame. The molten metal is placed in the heating box, and the discharge end of the buffer tank is located above the roller gap.

[0010] As a further optimization of the present invention, the vertical drive assembly includes a movable plate, a slide rail is provided on the surface of the support frame, a drive component is connected to the surface of the support frame, the drive component drives the movable plate to slide along the surface of the slide rail, and a shaping plate is rotatably connected to the surface of the movable plate.

[0011] As a further optimization of the present invention, the support frame is slidably connected to the rapid solidification platform. The side roller includes a front roller section 1 and a rear roller section 1. The core roller includes a front roller section 2 and a rear roller section 2. Each pair of shaping rollers includes a corresponding inner roller and an outer roller. Each group of outer rollers includes a front roller section 3 and a rear roller section 3. Each group of inner rollers includes a front roller section 4 and a rear roller section 4. The front roller section 1, front roller section 2, front roller section 3, and front roller section 4 are correspondingly arranged. The rear roller section 1, rear roller section 2, rear roller section 3, and rear roller section 4 are correspondingly arranged. The surface of the rear roller section 1 is provided with an inner groove 1. The surface of the rear roller section 2 is circumferentially raised with a pressing ring 1. Starting from the outer roller near the first end, the surfaces of multiple groups of rear roller section 3 are sequentially provided with inner groove 2 from shallow to deep. The surfaces of multiple groups of rear roller section 4 are sequentially provided with pressing ring 2 from shallow to deep.

[0012] As a further optimization of the present invention, a transverse drive assembly is connected to the rapid solidification platform, the transverse drive assembly being used to drive the support frame to slide along the surface of the rapid solidification platform.

[0013] As a further optimization of the present invention, an auxiliary roller is provided on one side of the shaping roller at the end of the connecting strip. An auxiliary plate is fixedly connected to the surface of the shaping plate, a sliding plate is slidably connected to the surface of the auxiliary plate, and a connecting column is fixedly connected to the surface of the sliding plate. The end of the connecting column away from the sliding plate passes through the auxiliary plate. A compression spring is sleeved on the outer surface of the connecting column. The two ends of the compression spring are fixedly connected to the surfaces of the auxiliary plate and the sliding plate, respectively. A force transmission motor is fixedly connected to the surface of the sliding plate. The driving end of the force transmission motor passes through the sliding plate and is fixedly connected to the auxiliary roller. The auxiliary roller presses against the surface of the shaping roller closest to the edge of the shaping plate at the very end.

[0014] A second aspect of the present invention provides a continuous hot forming process for cold heading steel with sharp edges, which is implemented using the pressing device in the continuous casting process described above, and includes the following steps: S1. Preliminary preparation: The molten metal is fed into the feeding assembly on the frame, the position adjustment mechanism is started, the distance, height and tilt angle between the inner roll and the mandrel in the rolling assembly are adjusted, and a suitable roll gap is reserved. S2. Melt Conveying: Start the feeding assembly to smoothly convey the molten metal into the gap between the side roller and the core roller; S3, Continuous casting and hot rolling: Start the rotary drive assembly on the rapid solidification platform to drive the side rolls and the core roll to rotate synchronously, roll the molten metal in the roll gap, and continuously transport the rolled metal strip to the sizing gap of the sizing roll. S4. Bending into a ring: After the metal strip is conveyed to the end shaping seam, the vertical drive component and rotary motor of the shaping mechanism are started simultaneously. The vertical drive component drives the shaping plate to move up, and the rotary motor drives the shaping plate to rotate, causing the metal strip in the shaping seam to bend, and finally forming a ring-shaped cold heading steel billet.

[0015] The beneficial effects of this invention are as follows: This invention deeply integrates the processes of molten metal conveying, solidification, shaping and bending, and can directly and continuously prepare annular cold heading steel billets from molten metal without the need for intermediate steps such as billet pretreatment, multiple rolling, and repeated clamping and positioning. This simplifies the production process, shortens the production cycle, significantly improves the production efficiency of cold heading steel billets, and is suitable for large-scale and continuous production needs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the positions of the side roller and the core roller of the present invention; Figure 3 This is a schematic diagram of the structure of the rotary drive assembly of the present invention; Figure 4 This is a schematic diagram of the roll gap adjustment assembly of the present invention; Figure 5 This is a schematic diagram of the height adjustment component of the present invention; Figure 6 This is a schematic diagram of the card slot structure of the present invention; Figure 7 This is a schematic diagram of the structure of the column bar of the present invention; Figure 8 This is a schematic diagram of the structure of the roller of the present invention; Figure 9 This is a schematic diagram of the structure of the shaping roller of the present invention; Figure 10 This is a schematic diagram of the feeding assembly of the present invention; Figure 11 This is a schematic diagram of the vertical drive component of the present invention; Figure 12 This is a schematic diagram showing the position of the auxiliary wheel of the present invention.

[0017] In the diagram: 1. Rapid solidification platform; 2. Frame; 3. Feeding assembly; 31. Drive motor; 32. Heating box; 33. Buffer tank; 34. Rotary shaft; 4. Rolling assembly; 41. Side roller; 411. Front roller section one; 412. Rear roller section one; 413. Inner groove one; 42. Core roller; 421. Front roller section two; 422. Rear roller section two; 423. Pressing ring one; 5. Rotary drive assembly; 51. Actuating motor; 52. Universal shaft; 53. Telescopic rod; 6. Support frame; 7. Vertical drive assembly; 71. Slide rail; 72. Moving plate; 73. Drive component one; 8. Connecting bar; 81. Column bar; 9. Shaping plate; 91. Slot; 10. Shaping roller; 101. Front roller section three; 102. Rear roller section three; 103. Front roller section four; 104. Rear roller section three; Roller section four; 105, recessed groove two; 106, pressing ring two; 11, rotary motor; 12, mounting plate; 13, shaping gap adjustment assembly; 131, rotary motor; 132, double-headed screw; 133, moving block; 134, slide chute; 14, clamping roller; 15, tilt angle adjustment assembly; 151, tilt angle adjustment block; 152, sliding block; 153, driving component two; 154, adjusting slider; 16, roller gap adjustment assembly; 161, running motor; 162, screw rod; 163, transmission block; 17, height adjustment assembly; 171, adjusting screw; 172, height adjustment block; 18, adjusting block; 19, auxiliary roller; 20, auxiliary plate; 21, sliding plate; 22, connecting column; 23, pressure spring; 24, force transmission motor; 25, transverse drive assembly. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content. Example 1:

[0019] refer to Figure 1 and Figure 2 The structure shown is a pressing device in the continuous casting process, including a rapid solidification platform 1 and a frame 2 set on one side of the rapid solidification platform 1. The frame 2 is equipped with a feeding assembly 3 for conveying molten metal. The rapid solidification platform 1 is provided with a rolling assembly 4, which includes a side roll 41 and a core roll 42. A roll gap is reserved between the side roll 41 and the core roll 42. The rapid solidification platform 1 is equipped with a rotary drive assembly 5 for driving the side roll 41 and the core roll 42 to rotate. The rapid solidification platform 1 is connected to a support frame 6, and a shaping mechanism is connected to the support frame 6. The shaping mechanism includes a vertical drive component 7, a connecting strip 8, and a shaping plate 9 rotatably connected to the drive end of the vertical drive component 7. Multiple pairs of shaping rollers 10 are connected to the connecting strip 8, and a shaping gap is reserved between each pair of shaping rollers 10. One end of the connecting strip 8 is fixedly connected to the support frame 6, and the other end is fixedly connected to the shaping plate 9. The feeding assembly 3 conveys the molten metal into the roll gap. The rotary drive assembly 5 drives the side roll 41 and the center roll 42 to rotate, rolling the molten metal in the roll gap and conveying it to the shaping gap in sequence. Then, while the vertical drive assembly 7 drives the shaping plate 9 to move upward, the shaping plate 9 is rotated, causing the rolled metal in the shaping gap to bend into a ring shape.

[0020] Specifically, the drive end of the vertical drive assembly 7 is also connected to a rotary motor 11 for driving the shape plate 9 to rotate. The rotary motor 11 can be a stepper motor, servo motor, etc. Circulating cooling water is connected inside the side roller 41 and the core roller 42. The equipment in this embodiment uses a double-roller rapid cooling method to quickly cool the molten metal. Specifically, the molten metal is injected into the roller gap between the side roller 41 and the core roller 42 through a distributor. Heat is simultaneously conducted to the two roller surfaces (side roller 41 and core roller 42), causing the surface of the molten metal to solidify instantly, thereby forming a strip.

[0021] refer to Figure 1 and Figure 3 As shown in the partial structure, the rapid solidification platform 1 is provided with adjusting blocks 18 corresponding to the side rollers 41 and the core roller 42. The rotary drive assembly 5 includes two sets of actuator motors 51. The drive ends of the two sets of actuator motors 51 are connected to universal joints 52. The end of the universal joint 52 away from the actuator motors 51 is connected to a telescopic rod 53. The telescopic rod 53 includes a fixed rod and a movable rod. One end of the movable rod is slidably connected to the fixed rod. The other ends of the two sets of movable rods pass through the corresponding adjusting blocks 18 and are fixedly connected to the side rollers 41 and the core roller 42 respectively. The rapid solidification platform 1 is provided with a position adjustment mechanism for adjusting the roller gap, the height of the side rollers 41 and the core roller 42 and the tilt angle.

[0022] The position adjustment assembly is provided in two sets, which adjust the side roller 41 and the core roller 42 respectively through corresponding adjustment blocks 18. The position adjustment mechanism includes an inclination adjustment assembly 15, a roller gap adjustment assembly 16 and a height adjustment assembly 17. The inclination adjustment assembly 15 is used to adjust the inclination angle of the side roller 41 and the core roller 42. The roller gap adjustment assembly 16 is used to adjust the size of the roller gap (i.e., the distance between the side roller 41 and the core roller 42). The height adjustment assembly 17 is used to adjust the height of the side roller 41 and the core roller 42. The surface of the rapid solidification platform 1 located on both sides of the two sets of adjustment blocks 18 is provided with through grooves, and sliding grooves are provided on the corresponding sides of the through grooves. For details, please refer to Figure 3 The structure shown includes a tilt adjustment assembly 15 comprising a tilt adjustment block 151 disposed within a through groove. Sliding blocks 152 are fixedly connected to corresponding side surfaces of the tilt adjustment block 151. The sliding blocks 152 are disposed within corresponding sliding grooves. A gap is reserved between the side surfaces of the tilt adjustment block 151 with the sliding blocks 152 and the inner wall of the through groove on the corresponding side. A gap is also reserved between the side surface of the sliding block 152 away from the tilt adjustment block 151 and the inner wall of the sliding groove. The tilt angle... Two sets of driving components 153 (which can be electric push rods, hydraulic cylinders, pneumatic cylinders, etc.) are correspondingly provided on the adjustment block 151. Two sets of symmetrically arranged adjusting sliders 154 slide on the upper surface of the tilt adjustment block 151. The driving ends of the two sets of driving components 153 on the same side extend into the through grooves on the corresponding sides and are rotatably connected to the corresponding adjusting sliders 154. The reserved gap is so that the driving components 153 can adjust the tilt angle of the tilt adjustment block 151 by adjusting the sliders 154. refer to Figure 3 and Figure 4 As shown in the partial structure, the surface of the tilt adjustment block 151 is provided with a slide rail, and the roll gap adjustment assembly 16 includes a rotating motor 161 fixedly connected to the surface of the tilt adjustment block 151. The drive end of the rotating motor 161 extends into the slide rail and is fixedly connected to a spiral rod 162. The surface of the spiral rod 162 is threadedly connected to a transmission block 163 that slides along the inner wall of the slide rail. One end of the transmission block 163 extends out of the slide rail and is fixedly connected to the adjustment block 18 on the corresponding side. refer to Figure 4 and Figure 5 As shown in the partial structure, the height adjustment assembly 17 includes an adjusting screw 171, which is threadedly connected to the rapid solidification platform 1. One end of the adjusting screw 171 near the tilt adjustment block 151 is rotatably connected to a height adjustment block 172 that slides along the surface of the rapid solidification platform 1. One edge of the upper surface of the height adjustment block 172 is set as an inclined surface. The surface of the tilt adjustment block 151 is also provided with an inclined groove, and the inclined surface of the inclined groove is in contact with the inclined surface of the height adjustment block 172.

[0023] It should be noted that activating the two sets of drive components 153 can drive the adjusting slider 154, which in turn drives the tilt adjustment block 151 to move, thereby adjusting the tilt angle of the tilt adjustment block 151. The tilt adjustment block 151 drives the adjusting block 18 to move through the transmission block 163, and the adjusting block 18 drives the corresponding side roller 41 and core roller 42 to move through the telescopic rod 53, thereby adjusting the tilt angle of the side roller 41 and core roller 42. When the motor 161 is started, it can drive the screw rod 162 to rotate. The screw rod 162 drives the transmission block 163 to slide along the inner wall of the slide. The transmission block 163 drives the adjusting block 18 to move. The adjusting block 18 drives the corresponding side roller 41 and the core roller 42 to move through the telescopic rod 53, thereby adjusting the distance between the side roller 41 and the core roller 42. Rotating the adjusting screw 171 allows the height adjusting block 172 to move closer to or further away from the tilt adjusting block 151. With the cooperation of the inclined surface of the sloping groove and the inclined surface of the height adjusting block 172, the tilt adjusting block 151 can move up and down. The tilt adjusting block 151 drives the adjusting block 18 to move up and down through the transmission block 163. The adjusting block 18 drives the corresponding side roller 41 and center roller 42 to move up and down through the telescopic rod 53, thereby adjusting the height of the side roller 41 and center roller 42.

[0024] In actual use, before starting the feeding assembly 3, the position adjustment mechanism needs to be started first to adjust the distance between the side roller 41 and the core roller 42, the height of the side roller 41 and the core roller 42, and the tilt angle. Then, the rotation drive assembly 5 is started to drive the corresponding side roller 41 and core roller 42 to rotate simultaneously, so that the molten metal flows into the roller gap.

[0025] refer to Figure 6 and Figure 7 The structure shown includes a connecting strip 8 composed of multiple sets of posts 81. Adjacent sets of posts 81 are rotatably connected at their near ends. The surface of the shaping plate 9 has slots 91 near its edge, corresponding to the multiple sets of posts 81. Each set of posts 81 has a fixedly connected roller 14 corresponding to the slot 91. The end of the roller 14 on the first post 81, away from the post 81, is rotatably connected to the support frame 6. The end of the roller 14 on the last post 81, away from the post 81, is rotatably connected to the slot 91. (See reference) Figure 8 As shown in the structure, except for the first set of column bars 81 located at the first end, the other sets of column bars 81 are fixedly connected to the side surface away from the clamping roller 14 with mounting plates 12, and each pair of shaping rollers 10 is set on the mounting plate 12.

[0026] In other embodiments, the connecting bar 8 may also be a metal chain, a flexible metal rope, or the like.

[0027] It should be noted that, except for the groove 91 corresponding to the end column 81 which has a circular cross-section, the sides of the other grooves 91 are all open, so that the roller 14 can be inserted into the groove 91; multiple sets of grooves 91 are arranged around the circumference of the shaping plate 9.

[0028] It should be further explained that, in the initial state, the shaping plate 9 is located near the lower end of the support frame 6, the connecting strip 8 is vertical, and the roll gap and multiple shaping gaps are on the same straight line. In actual use, the feeding component 3 guides the molten metal to flow into the roll gap reserved between the side roller 41 and the core roller 42. As the rotation drive component 5 drives the side roller 41 and the core roller 42 to rotate, the molten metal moves sequentially into the shaping gap until it reaches the last shaping gap. At this time, the vertical drive component 7 and the rotary motor 11 are activated simultaneously. The vertical drive component 7 drives the moving plate 72 to move from the end away from the core roller 42 to the end closer to the core roller 42 (i.e., move upwards). The rotary motor 11 drives the shaping plate 9 to rotate. During this process, the clamping roller 14 will sequentially engage with the corresponding clamping groove 91, thereby making the linearly arranged pairs of shaping rollers 10 become circumferentially arranged, and finally making the metal rolled by the roll gap into a ring shape.

[0029] refer to Figure 6 and Figure 9 As shown in the partial structure, each set of mounting plates 12 is connected to a shaping gap adjustment assembly 13 for adjusting the size of the shaping gap. The shaping gap adjustment assembly 13 includes a rotating motor 131 fixedly connected to the surface of the mounting plate 12. The surface of the mounting plate 12 is provided with a sliding groove 134. The drive end of the rotating motor 131 extends into the sliding groove 134 and is fixedly connected to a double-headed screw 132. The surface of the double-headed screw 132 is threaded with symmetrically arranged moving blocks 133. The moving blocks 133 slide along the inner wall of the sliding groove 134. The two sets of moving blocks 133 are respectively connected to the paired shaping rollers 10.

[0030] Specifically, the rotating motor 131 is a stepper motor, servo motor, etc. In actual use, the rotating motor 131 drives the double-headed screw 132 to rotate, causing the two sets of moving blocks 133 to slide along the inner wall of the slide groove 134, thereby adjusting the distance between the pair of shaping rollers 10 connected to the two sets of moving blocks 133, and thus adjusting the size of the shaping gap.

[0031] refer to Figure 10 As shown in the partial structure, the feeding assembly 3 includes a drive motor 31, a heating box 32, and a buffer tank 33. The outer side of the heating box 32 is fixedly connected to symmetrically arranged rotating shafts 34, which are rotatably connected to the frame 2. One set of rotating shafts 34 is fixedly connected to the drive motor 31 at the end away from the heating box 32. The buffer tank 33 is inclined and fixedly connected to the frame 2. The molten metal is placed inside the heating box 32, and the discharge end of the buffer tank 33 is located above the roller gap.

[0032] It should be noted that the heating box 32 is a hollow cylinder that is closed at the bottom and only open at the top; the drive motor 31 can be a stepper motor, servo motor, etc.; the drive motor 31 can drive the heating box 32 to rotate through a reducer.

[0033] In actual use, the drive motor 31 drives the heating box 32 to rotate, causing the heating box 32 to tilt, thereby introducing the molten metal in the heating box 32 from one end of the buffer tank 33 into its interior. The molten metal flows through the buffer tank 33 to the space between the side roller 41 and the core roller 42.

[0034] In this embodiment, a distributor can be provided at the discharge end of the buffer tank 33. The distributor is located above the roll gap. The molten metal in the buffer tank 33 flows through the distributor to the space between the side roll 41 and the core roll 42. The distributor is used to distribute the molten metal evenly and continuously between the side roll 41 and the core roll 42 to ensure that the material has a consistent thickness, width and flow rate before forming. Since it is an existing device, it will not be described in detail in this embodiment.

[0035] refer to Figure 11 As shown in the partial structure, the vertical drive assembly 7 includes a movable plate 72, the support frame 6 has a slide rail 71 on its surface, the support frame 6 is connected to a drive component 73, the drive component 73 drives the movable plate 72 to slide along the surface of the slide rail 71, and the shaping plate 9 is rotatably connected to the surface of the movable plate 72.

[0036] Specifically, the rotary motor 11 is connected to the surface of the moving plate 72 away from the shaping plate 9, and the drive end of the rotary motor 11 passes through the moving plate 72 and is connected to the shaping plate 9.

[0037] It should be noted that the vertical drive component 7 can be any mechanical structure capable of driving the shaping plate 9 to move linearly; specifically, it can also be a lead screw module. In this embodiment, the drive component 73 can be an electric push rod, a hydraulic cylinder, a pneumatic cylinder, etc. Example 2:

[0038] This embodiment further improves upon Embodiment 1. The thermoforming apparatus in this embodiment can also roll molten metal into irregularly shaped annular materials (i.e., roll outwardly protruding edges onto the surface of the flat annular material in Embodiment 1). For details, please refer to... Figure 4 and Figure 9The structure shown includes a support frame 6 slidably connected to a rapid solidification platform 1. The side rollers 41 include a front roller section 411 and a rear roller section 412. The core roller 42 includes a front roller section 421 and a rear roller section 422. Each pair of shaping rollers 10 includes corresponding inner and outer rollers. Each group of outer rollers includes a front roller section 3 101 and a rear roller section 3 102. Each group of inner rollers includes a front roller section 4 103 and a rear roller section 4 104. The front roller section 411, front roller section 2 421, and front roller section 3 101... Corresponding to the front roller section 4 103, the rear roller section 1 412, rear roller section 2 422, rear roller section 3 102 and rear roller section 4 104 are also correspondingly arranged. The surface of the rear roller section 1 412 is provided with an inner groove 413. The surface of the rear roller section 2 422 is circumferentially raised with a pressing ring 423. Starting from the outer roller near the first end, the surfaces of multiple sets of rear roller section 3 102 are sequentially provided with inner grooves 2 105 from shallow to deep. The surfaces of multiple sets of rear roller section 4 104 are sequentially provided with pressing rings 2 106 from shallow to deep.

[0039] Specifically, front roller section 1 411 and front roller section 2 421 are connected to the end of the corresponding telescopic rod 53 away from the actuator motor 51. Rear roller section 1 412 and rear roller section 2 422 are respectively connected to the end of front roller section 1 411 and front roller section 2 421 away from the actuator motor 51. Rear roller section 3 102 and rear roller section 4 104 in the same set of shaping rollers 10 are respectively connected to the moving block 133 in a set of shaping seam adjustment components 13. Front roller section 3 101 and front roller section 4 103 are fixedly connected to the end of the corresponding rear roller section 3 102 and rear roller section 4 104 away from the moving block 133. The depth of the inner groove 2 105 on the corresponding outer roller and the pressing ring 2 106 on the inner roller is the same.

[0040] It should be noted that the first set of outer and inner rollers near the beginning may not have the inner groove 105 and the pressing ring 106.

[0041] refer to Figure 2 and Figure 11 As shown in the partial structure, the rapid solidification platform 1 is connected to a transverse drive assembly 25, which is used to drive the support frame 6 to slide along the surface of the rapid solidification platform 1.

[0042] It should be noted that the lateral drive component 25 can be any mechanical structure capable of driving the support frame 6 to move linearly. Specifically, it can be a lead screw module, an electric push rod, a hydraulic cylinder, a pneumatic cylinder, etc.

[0043] In practical applications, when it is necessary to produce irregularly shaped ring-shaped materials, the ring-shaped material with flat sides (the material formed after the molten metal is pressed) from Example 1 is first pressed out. Then, the roll gap adjustment assembly 16 is activated, so that the side roller 41 and the center roller 42 move away from each other (even if the side roller 41 and the center roller 42 release the pressed flat ring-shaped material, the flat ring-shaped material is held by the shaping roller 10 at this time). Then, the transverse drive assembly 25 is activated, which drives the support frame 6 and moves the shaping roller 10, so that the ring-shaped material moves into the roll gap between the rear roller section 1 412 and the rear roller section 2 422. Then, the roll gap adjustment assembly 16 is activated, so that the side roller 41 and the center roller 42 first slightly clamp the flat ring-shaped material. Then, multiple sets of shaping gap adjustment assemblies 13 are activated simultaneously to drive the corresponding outer roller and inner roller. The rollers move away from each other, and then the transverse drive assembly 25 is activated to drive the support frame 6 and move multiple sets of corresponding outer and inner rollers. This causes the rear roller section 4 104 of the inner roller and the rear roller section 3 102 of the outer roller to move to the position corresponding to the flat annular material. Then, starting from below the center roller 42, the shaping seam adjustment assembly 13 is activated in sequence, causing multiple pairs of outer and inner rollers to move closer to each other in sequence to press the flat annular material (when the outer and inner rollers away from the beginning clamp the flat annular material, the outer and inner rollers in front of them will release the flat annular material). During this process, the side roller 41 and the center roller 42 rotate synchronously and gradually clamp the flat annular material until the side roller 41 and the center roller 42, as well as the outer and inner rollers at the very end, completely clamp the flat annular material to press out the irregular annular material.

[0044] refer to Figure 9 and Figure 12 As shown in the partial structure, an auxiliary roller 19 is provided on one side of the shaping roller 10 at the end of the connecting strip 8. An auxiliary plate 20 is fixedly connected to the surface of the shaping plate 9. A sliding plate 21 is slidably connected to the surface of the auxiliary plate 20. A connecting post 22 is fixedly connected to the surface of the sliding plate 21. One end of the connecting post 22 away from the sliding plate 21 passes through the auxiliary plate 20. A pressure spring 23 is sleeved on the outer surface of the connecting post 22. The two ends of the pressure spring 23 are fixedly connected to the surfaces of the auxiliary plate 20 and the sliding plate 21, respectively. A force transmission motor 24 is fixedly connected to the surface of the sliding plate 21. The driving end of the force transmission motor 24 passes through the sliding plate 21 and is fixedly connected to the auxiliary roller 19. The auxiliary roller 19 presses against the surface of the shaping roller 10 at the very end, closest to the edge of the shaping plate 9.

[0045] Among them, the force transmission motor 24 can be a stepper motor, servo motor, etc.; the auxiliary roller 19 presses against the surface of the shaping roller 10 by the force of the pressure spring 23. When the force transmission motor 24 drives the auxiliary roller 19 to rotate, it will drive the shaping roller 10 closest to it to rotate under the action of friction. Example 3:

[0046] The continuous hot forming process for cold heading steel with sharp edges is implemented using the pressing device in the continuous casting process described in Example 1 or Example 2, and includes the following steps: S1. Preliminary preparation: The molten metal is conveyed into the unloading assembly 3 on the frame 2, the position adjustment mechanism is started, the distance, height and tilt angle of the inner roller 41 and the core roller 42 of the rolling assembly 4 are adjusted, and a suitable roller gap is reserved. S2. Melt conveying: Start the feeding assembly 3 to smoothly convey the molten metal into the gap between the side roller 41 and the core roller 42.

[0047] S3, Continuous casting and hot rolling: Start the rotary drive assembly 5 on the rapid solidification platform 1 to drive the side roll 41 and the core roll 42 to rotate synchronously, roll the molten metal in the roll gap, and the rolled metal strip is continuously conveyed to the shaping gap of the shaping roll 10. S4. Bending into a ring: After the metal strip is conveyed to the end shaping seam, the vertical drive component 7 and the rotary motor of the shaping mechanism are started simultaneously. The vertical drive component 7 drives the shaping plate 9 to move upward, and the rotary motor drives the shaping plate 9 to rotate, causing the metal strip in the shaping seam to bend and form a ring-shaped cold heading steel billet. S5. Edge forming: By adjusting the size of the forming gap of the forming roller 10, and in conjunction with the secondary rolling of the side roller 41 and the center roller 42, the edge of the annular billet is gradually pressed to finally obtain the irregular annular cold heading steel billet.

[0048] It should be noted that step S5 is implemented by the apparatus of Embodiment 2. If it is necessary to produce non-shaped cold heading steel billets (i.e., flat ring-shaped materials), then step S4 can be performed.

[0049] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A press-down device in a continuous casting process, characterized in that, It includes a rapid solidification platform and a frame disposed on one side of the rapid solidification platform, wherein a feeding assembly for conveying molten metal is disposed on the frame; The rapid solidification platform is equipped with a rolling assembly, which includes a side roll and a core roll, with a roll gap reserved between the side roll and the core roll. The rapid solidification platform is also equipped with a rotary drive assembly for driving the side roll and the core roll to rotate. The rapid solidification platform is connected to a support frame, and a shaping mechanism is connected to the support frame. The shaping mechanism includes a vertical drive assembly, a connecting strip, and a shaping plate rotatably connected to the drive end of the vertical drive assembly. Multiple pairs of shaping rollers are connected to the connecting strip, and a shaping gap is reserved between each pair of shaping rollers. One end of the connecting strip is fixedly connected to the support frame, and the other end is fixedly connected to the shaping plate. The feeding assembly delivers molten metal into the roll gap. The rotary drive assembly drives the side rolls and center rolls to rotate, rolling the molten metal in the roll gap and sequentially delivering it into the shaping gap. Then, while the vertical drive assembly drives the shaping plate to move up and down, the shaping plate is rotated, causing the rolled metal in the shaping gap to bend into a ring shape.

2. The pressing device in the continuous casting process according to claim 1, characterized in that: The rapid solidification platform is equipped with adjustment blocks corresponding to the side rollers and the core roller. The rotary drive assembly includes two sets of actuator motors. The drive ends of the two sets of actuator motors are connected to universal joints. The end of the universal joint away from the actuator motor is connected to a telescopic rod. The telescopic rod includes a fixed rod and a movable rod. One end of the movable rod is slidably connected inside the fixed rod. The other ends of the two sets of movable rods pass through the corresponding adjustment blocks and are fixedly connected to the side rollers and the core roller, respectively. The rapid solidification platform is equipped with a position adjustment mechanism for adjusting the height and tilt angle of the roller gap, side rollers, and core rollers.

3. The pressing device in the continuous casting process according to claim 1, characterized in that: The connecting strip is composed of multiple sets of column bars, with adjacent sets of column bars rotatably connected at their close ends. The surface of the shaping plate has slots corresponding to the multiple sets of column bars near its edge. Each set of column bars has a clamping roller fixedly connected to its surface, corresponding to the slot. The clamping roller on the first column bar is rotatably connected to the support frame at the end away from the column bar, and the clamping roller on the last column bar is rotatably connected to the slot at the end away from the column bar. Except for the first set of column bars, the surface of each of the other sets of column bars away from the clamping roller is fixedly connected to a mounting plate. Each pair of shaping rollers is mounted on the mounting plate.

4. The pressing device in the continuous casting process according to claim 3, characterized in that: Each set of mounting plates is connected to a shaping gap adjustment assembly for adjusting the size of the shaping gap. The shaping gap adjustment assembly includes a rotating motor fixedly connected to the surface of the mounting plate. The surface of the mounting plate is provided with a sliding groove. The drive end of the rotating motor extends into the sliding groove and is fixedly connected to a double-headed screw. The surface of the double-headed screw is threaded with symmetrically arranged moving blocks. The moving blocks slide along the inner wall of the sliding groove. The two sets of moving blocks are respectively connected to a pair of shaping rollers.

5. The pressing device in the continuous casting process according to claim 1, characterized in that: The feeding assembly includes a drive motor, a heating box, and a buffer tank. The outer side of the heating box is fixedly connected to symmetrically arranged rotating shafts, which are rotatably connected to the frame. One set of rotating shafts is fixedly connected to the drive motor at the end away from the heating box. The buffer tank is inclined and fixedly connected to the frame. The molten metal is placed inside the heating box, and the discharge end of the buffer tank is located above the roller gap.

6. The pressing device in the continuous casting process according to claim 1, characterized in that: The vertical drive assembly includes a movable plate, a slide rail is provided on the surface of the support frame, a drive component is connected to the surface of the support frame, the drive component drives the movable plate to slide along the slide rail surface, and a shaping plate is rotatably connected to the surface of the movable plate.

7. The pressing device in the continuous casting process according to claim 1, characterized in that: The support frame is slidably connected to the rapid solidification platform. The side rollers include a front roller section 1 and a rear roller section 1. The core rollers include a front roller section 2 and a rear roller section 2. Each pair of shaping rollers includes a corresponding inner roller and an outer roller. Each group of outer rollers includes a front roller section 3 and a rear roller section 3. Each group of inner rollers includes a front roller section 4 and a rear roller section 4. The front roller sections 1, 2, 3, and 4 are arranged correspondingly. The rear roller sections 1, 2, 3, and 4 are arranged correspondingly. The surface of the rear roller section 1 is provided with an inner groove 1. The surface of the rear roller section 2 is circumferentially raised with a pressing ring 1. Starting from the outer roller near the first end, the surfaces of multiple groups of rear roller sections 3 are sequentially provided with inner grooves 2 from shallow to deep. The surfaces of multiple groups of rear roller sections 4 are sequentially provided with pressing rings 2 from shallow to deep.

8. The pressing device in the continuous casting process according to claim 7, characterized in that: A transverse drive assembly is connected to the rapid solidification platform, which is used to drive the support frame to slide along the surface of the rapid solidification platform.

9. The pressing device in the continuous casting process according to claim 8, characterized in that: An auxiliary roller is provided on one side of the shaping roller at the end of the connecting strip. An auxiliary plate is fixedly connected to the surface of the shaping plate. A sliding plate is slidably connected to the surface of the auxiliary plate. A connecting column is fixedly connected to the surface of the sliding plate. The end of the connecting column away from the sliding plate passes through the auxiliary plate. A compression spring is sleeved on the outer surface of the connecting column. The two ends of the compression spring are fixedly connected to the surfaces of the auxiliary plate and the sliding plate, respectively. A force transmission motor is fixedly connected to the surface of the sliding plate. The drive end of the force transmission motor passes through the sliding plate and is fixedly connected to the auxiliary roller. The auxiliary roller presses against the surface of the shaping roller at the very end, closest to the edge of the shaping plate.

10. A continuous hot forming process for cold-heading steel with sharp edges, implemented using the pressing device in the continuous casting process as described in any one of claims 1-9, comprising the following steps: S1. Preliminary preparation: The molten metal is fed into the feeding assembly on the frame, the position adjustment mechanism is started, the distance, height and tilt angle between the inner roll and the mandrel in the rolling assembly are adjusted, and a suitable roll gap is reserved. S2. Melt Conveying: Start the feeding assembly to smoothly convey the molten metal into the gap between the side roller and the core roller; S3, Continuous casting and hot rolling: Start the rotary drive assembly on the rapid solidification platform to drive the side rolls and the core roll to rotate synchronously, roll the molten metal in the roll gap, and continuously transport the rolled metal strip to the sizing gap of the sizing roll. S4. Bending into a ring: After the metal strip is conveyed to the end shaping seam, the vertical drive component and rotary motor of the shaping mechanism are started simultaneously. The vertical drive component drives the shaping plate to move up, and the rotary motor drives the shaping plate to rotate, causing the metal strip in the shaping seam to bend, and finally forming a ring-shaped cold heading steel billet.

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