Continuous rolling equipment and method for square billet continuous casting production line

Abstract

The invention discloses continuous rolling equipment for a square billet continuous casting production line and a method thereof, and relates to the technical field of steel machining. The device comprises a device body, a crystallizer is fixed to the top of the device body, a plurality of ejection guide rollers are rotationally installed on one side of the interior of the device body, a plurality of conveying rollers are rotationally installed on the lower portion of the interior of the device body, and a rolling assembly is arranged on one side of the device body; a straightening device is arranged at the top of the equipment body and comprises a two-way screw, a sliding column, a first scraper, a second scraper, two second U-shaped frames, two U-shaped clamping plates and two T-shaped columns, and the two second U-shaped frames are fixed to the two sides of the top of the equipment body respectively. Through the arrangement of the straightening device, the two sides of the square billet are clamped and straightened by the U-shaped clamping plate, and the U-shaped clamping plate can apply extra pressure to the two sides of the square billet, so that the square billet is prevented from transversely displacing or deflecting, and the square billet is kept stable in the rolling process.

Description

Technical Field

[0001] The invention relates to the technical field of steel processing, in particular to continuous rolling equipment and a method thereof for a square billet continuous casting production line. Background Art

[0002] The continuous rolling equipment in the billet continuous casting production line is mainly used to transform the billet into the desired metal form through a series of rolling processes. The equipment usually includes a primary rolling mill, a finishing rolling mill, etc., which realizes the plastic deformation of the metal by gradually reducing the cross-sectional size and controlling the temperature and speed. The efficiency and precision of the continuous rolling equipment are crucial to improving the output and product quality of the production line.

[0003] The Chinese patent with patent announcement number CN 205270335 U discloses a special steel continuous casting and rolling equipment, including a continuous casting machine and a continuous rolling mill group, wherein the continuous casting machine includes a ladle, a tundish, and a support guide roller from top to bottom; the continuous rolling mill group is composed of multiple rolling mills, wherein the rolling mill includes a frame, a first power device, a second power device, and also includes a first roller, a second roller, a third roller, and a fourth roller located inside the frame, wherein the first roller, the second roller, the third roller, and the fourth roller are arranged on the same plane and perpendicular to each other. This patent can improve the quality and production efficiency of special steel, completely eliminate the core looseness, shrinkage and segregation defects of the continuous casting billet, save the heating link, and reduce the production cost.

[0004] However, the current continuous rolling equipment has the following problems: the continuous rolling equipment is not convenient for straightening the square billet when rolling it. Since the square billet does not receive sufficient shape correction during the rolling process, some areas will undergo local excessive compression or elongation, which will lead to uneven product size and even quality problems such as cracks and surface defects. Therefore, we propose a continuous rolling equipment and method for a square billet continuous casting production line. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a continuous rolling device and method for a billet continuous casting production line, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical scheme: a continuous rolling equipment for a square billet continuous casting production line, comprising an equipment main body, a crystallizer is fixed on the top of the equipment main body, a plurality of billet discharging guide rollers are rotatably installed on one side of the interior of the equipment main body, a plurality of conveying rollers are rotatably installed on the lower part of the interior of the equipment main body, a rolling assembly is arranged on one side of the equipment main body, a straightening device is arranged on the top of the equipment main body, the straightening device comprises a bidirectional screw, a sliding column, a scraper 1, a scraper 2, two U-shaped frames 2, two U-shaped clamping plates, and two T-shaped columns, the two U-shaped frames 2 are respectively fixed on both sides of the top of the equipment main body, the bidirectional screw is rotatably installed between one side of the two U-shaped frames 2, and the bidirectional screw is driven by a motor, the sliding column is fixed between the other side of the two U-shaped frames 2, one end of the two U-shaped clamping plates is threadedly connected to the bidirectional screw, and the other end of the two U-shaped clamping plates is slidably installed on the outside of the sliding column, the scraper 1 is fixed at the lower inner wall of the equipment main body, the two T-shaped columns are fixed on both sides of the top of the scraper 1, and the scraper 2 is slidably installed The outside of the two T-shaped columns and a spring are provided between the T-shaped columns and the top of the second scraper. A U-shaped inclined plate is fixed to the side of the second scraper close to the billet discharge guide roller. The first scraper and the second scraper are both located between the inner sides of the two U-shaped clamps. When the conveying roller drives the square billet to move to the U-shaped inclined plate, the square billet will push the inclined surface of the U-shaped inclined plate to drive the U-shaped inclined plate to move upward. The U-shaped inclined plate drives the second scraper to move upward along the outside of the two T-shaped columns. The spring corresponding to the second scraper is compressed. At the same time, under the action of the spring force corresponding to the second scraper, the second scraper will be tightly attached to the square billet. The top, and in this process, the square billet will pass between the two U-shaped clamps, and the bidirectional screw is driven by a motor to rotate, and the bidirectional screw drives the U-shaped clamp to move along the outside of the sliding column toward the center of the equipment body, so that the U-shaped clamp clamps and straightens the two sides of the square billet, and the two U-shaped clamps are located between the inner sides of the U-shaped inclined plates, and the scraper one, scraper two and the two U-shaped clamps are chamfered on one side close to the billet discharge guide roller, and at the same time, the chamfered parts of scraper one, scraper two and the two U-shaped clamps will scrape off the oxide layer on the surface of the square billet.

[0007] According to the above technical scheme, the straightening device also includes two sliding rods, two side frames, two hinged rods, and two elastic telescopic rods. The two side frames are hinged at the side of the scraper 2 away from the blank discharge guide roller, and a spring is provided between the side frame and the outer wall of the scraper 2. A contact wheel is rotatably installed between the two side frames, and diamond columns are fixed on both sides of the rotating shaft of the contact wheel. The fixed ends of the two elastic telescopic rods are respectively fixed on the side of the two U-shaped clamps away from each other, and the telescopic ends of the two elastic telescopic rods are fixed with push rods. The two sliding rods are respectively slidably installed on the side of the two U-shaped clamps away from each other, and a plurality of shovel plates are fixed on the side of the two sliding rods close to the blank discharge guide roller. One end of the two hinged rods is respectively hinged on the two sliding rods The top of the billet, the other ends of the two hinged rods are respectively hinged at the outer walls of the two push rods, and several of the shovel plates are respectively in contact with the chamfered outer walls of the two U-shaped clamps, and the push rod is located on the movement trajectory of the rhombus column. When the scraper plate 2 is close to the top of the billet, the scraper plate drives the contact wheel to contact the top of the billet through the side frame. When the conveying roller drives the billet to move, under the action of the friction between the billet and the contact wheel, the billet drives the contact wheel to rotate, and the contact wheel drives the rhombus column to rotate. The rhombus column pushes the push rod to move in the direction of the elastic telescopic rod 1, the telescopic end of the elastic telescopic rod 1 is compressed, and the push rod pulls the hinged rod to drive the sliding rod to vertically displace along the outer wall of the U-shaped clamp, and the sliding rod drives the shovel plate to dynamically shovel the oxide layer on the surface of the billet.

[0008] According to the above technical scheme, the straightening device also includes two elastic telescopic rods 2 and two pressing plates. The fixed ends of the two elastic telescopic rods 2 are fixed on the top of the scraper 2, and the two telescopic pressing plates are respectively fixed on the top of the telescopic ends of the two elastic telescopic rods 2. The bottoms of the two pressing plates are respectively in contact with the top of the side frame. At the same time, when the rolling assembly rolls the square billet, the thickness of the square billet will become thinner, so that the top surface of the square billet will have a certain inclination. At this time, there will be a certain gap between the bottom surface of the scraper 2 and the top surface of the square billet, which makes it easy for the contact wheel to not contact the top surface of the square billet well. At this time, under the elastic force of the elastic telescopic rod 2, the telescopic end of the elastic telescopic rod 2 will drive the pressing plate to press the side frame, so that the side frame has a tendency to swing downward, and when the side frame swings downward, it will drive the contact wheel to swing downward.

[0009] According to the above technical scheme, the rolling assembly includes a U-shaped frame, which is fixed on one side of the equipment body, and a lower pressure roller is rotatably installed on the inner wall below the U-shaped frame, and the lower pressure roller is driven by a motor. A slide groove is opened on both sides of the U-shaped frame, and sliders are slidably installed inside the two slide grooves. An upper pressure roller is rotatably installed between the two sliders, and hydraulic cylinders are fixed on both sides of the top of the U-shaped frame, and the bottom of the telescopic end of the hydraulic cylinder is fixedly connected to the top of the slider. When the hydraulic cylinder is started, the telescopic end of the hydraulic cylinder pushes the slider to drive the upper pressure roller to move downward, so that the distance between the upper pressure roller and the lower pressure roller can be adjusted according to the rolling thickness of the square billet.

[0010] The two L-shaped rods are respectively fixed on the sides of the top of the two sliders, and the end of the L-shaped rods is slidably mounted on the slider. The L-shaped guide roller is used to move the billet along the upper and lower rollers, and the lower rollers are used to move the billet along the lower rollers.

[0011] A method for using a continuous rolling device for a billet continuous casting production line comprises the following steps: S1, the billet formed into a strip at the crystallizer moves downward along the billet guide roller under the action of its own gravity until the billet falls on the conveying roller; S2. When the conveying roller drives the billet to move to the U-shaped inclined plate, the billet will push the inclined surface of the U-shaped inclined plate to drive the U-shaped inclined plate to move upward, and the U-shaped inclined plate drives the second scraper to move upward along the outside of the two T-shaped columns. The spring corresponding to the second scraper is compressed. At the same time, under the action of the spring force corresponding to the second scraper, the second scraper will be close to the top of the billet. The second scraper applies pressure to the top of the billet to control the shape of the upper part of the billet; S3, at the same time, the billet passes between two U-shaped clamping plates, and the motor drives the bidirectional screw to rotate, and the bidirectional screw drives the U-shaped clamping plates to move along the outside of the sliding column toward the center of the equipment body, so that the U-shaped clamping plates clamp and straighten the two sides of the billet; S4. The straightened billet will pass through the rolling assembly, and the rolling assembly can be started to roll the billet.

[0012] The present invention provides a continuous rolling device and method for a billet continuous casting production line, which has the following beneficial effects: (1) The present invention sets a straightening device so that the conveying roller, U-shaped inclined plate, scraper 2, T-shaped column, bidirectional screw and sliding column cooperate to drive the U-shaped clamp to clamp and straighten the two sides of the square billet. The U-shaped clamp can apply additional pressure to the two sides of the square billet to prevent the square billet from lateral displacement or deflection, ensuring that it remains stable during the rolling process. At the same time, scraper 2 further applies pressure on the top of the square billet to control the upper shape of the square billet and prevent deformation caused by asymmetric pressure between the upper and lower parts. At the same time, the chamfered parts of scraper 1, scraper 2 and the two U-shaped clamps will scrape off the oxide layer on the surface of the square billet, thereby avoiding the uneven distribution of the oxide layer on the surface of the square billet, which will cause uneven pressure distribution on the surface of the square billet, affecting the clamping effect of the U-shaped clamp, and causing uneven shape control of the square billet after rolling.

[0013] (2) The present invention drives the shovel plate to dynamically shovel the oxide layer on the surface of the square billet through the cooperation of the scraper plate 2, the side frame, the contact wheel, the diamond column, the push rod, the elastic telescopic rod 1, the articulated rod and the slide rod. The shovel plate can effectively remove the oxide scale on the surface of the square billet by dynamically shoveling the oxide layer, thereby making the surface of the square billet smoother and reducing the influence of the uneven distribution of the oxide scale on the rolling process of the square billet. At the same time, the elastic telescopic rod 2 and the pressing plate cooperate to press the side frame, thereby making the side frame tend to swing downward. When the side frame swings downward, it will drive the contact wheel to swing downward, thereby ensuring that the contact wheel can effectively contact the top surface of the square billet, avoiding the gap between the bottom surface of the scraper plate 2 and the top surface of the square billet, resulting in the problem that the square billet cannot effectively drive the contact wheel to rotate, thereby indirectly ensuring the dynamic and effective operation of the shovel plate.

[0014] (3) The present invention arranges a pre-pressing device so that the slider, L-shaped column rod, stabilizing roller, scraper plate 2, L-shaped connecting rod, elastic telescopic plate, shaft rod and fixed rod cooperate to drive the guide roller to tilt. The inclined guide rollers can apply a proper angle to the square billet, so that the square billet maintains the best angle and direction when entering the rolling zone between the lower pressure roller and the upper pressure roller, which is helpful for the uniformity and stability of subsequent rolling. At the same time, through the pre-pressing effect of the guide roller, part of the initial deformation of the square billet is completed in advance, reducing the pressure burden of the roller in the subsequent rolling process, thereby improving the working efficiency and stability of the rolling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is schematically shown as a whole Figure 1 ; Figure 2 The present invention is schematically shown as a whole Figure 2 ; Figure 3 is a schematic diagram of a rolling assembly of the present invention; Figure 4 is a schematic diagram of a straightening device of the present invention; Figure 5 The partial structure diagram of the straightening device of the present invention is shown in FIG. Figure 1 ; Figure 6 The partial structure diagram of the straightening device of the present invention is shown in FIG. Figure 2 ; Figure 7 For the present invention Figure 6 A schematic diagram of the structure at A; Figure 8 Schematic diagram of the preloading device of the present invention Figure 1 ; Fig. 9 Schematic diagram of the preloading device of the present invention Figure 2 .

[0016] In the figure: 1. Equipment body; 2. Crystallizer; 3. Billet guide roller; 4. Conveying roller; 5. Rolling assembly; 51. U-shaped frame 1; 52. Lower pressure roller; 53. Slide 1; 54. Sliding block; 55. Upper pressure roller; 56. Hydraulic cylinder; 6. Straightening device; 61. U-shaped frame 2; 62. Bidirectional screw; 63. Sliding column; 64. U-shaped clamping plate; 65. Scraper 1; 66. T-shaped column; 67. Scraper 2; 68. U-shaped inclined plate; 69. 9. Shovel plate; 610. Slide bar; 611. Push rod; 612. Diamond column; 613. Side frame; 614. Contact wheel; 615. Articulated rod; 616. Elastic telescopic rod 1; 617. Elastic telescopic rod 2; 618. Pressing plate; 7. Pre-pressing device; 71. Elastic telescopic plate; 72. Shaft rod; 73. L-shaped connecting rod; 74. Fixed rod; 75. Guide roller; 76. Slide trough 2; 77. Stabilizing roller; 78. L-shaped column rod. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] See also Figure 1 - Fig. 9 One embodiment of the present invention is: a continuous rolling equipment for a billet continuous casting production line, comprising an equipment body 1, a crystallizer 2 is fixed on the top of the equipment body 1, a plurality of billet discharge guide rollers 3 are rotatably installed on one side of the inside of the equipment body 1, a plurality of conveying rollers 4 are rotatably installed at the bottom of the inside of the equipment body 1, a rolling assembly 5 is arranged on one side of the equipment body 1, and a straightening device 6 is arranged on the top of the equipment body 1, and the straightening device 6 comprises a bidirectional screw 62, a sliding column 63, a scraper 1 65, a scraper 2 67, two U-shaped frames 2 61, two U-shaped clamping plates 64, two T-shaped columns 66, and two U The U-shaped frame 61 is fixed on both sides of the top of the equipment body 1, the bidirectional screw 62 is rotatably installed between one side of the two U-shaped frames 61, and the bidirectional screw 62 is driven by a motor, the slide column 63 is fixed between the other sides of the two U-shaped frames 61, one end of the two U-shaped clamping plates 64 is threadedly connected with the bidirectional screw 62, and the other end of the two U-shaped clamping plates 64 is slidably installed on the outside of the slide column 63, the scraper 1 65 is fixed on the lower inner wall of the equipment body 1, the two T-shaped columns 66 are fixed on both sides of the top of the scraper 1 65, the scraper 2 67 is slidably installed on the outside of the two T-shaped columns 66, and the T A spring is arranged between the top of the column 66 and the scraper plate 67. A U-shaped inclined plate 68 is fixed to the side of the scraper plate 67 close to the billet discharge guide roller 3. The scraper plate 65 and the scraper plate 67 are both located between the inner sides of the two U-shaped clamping plates 64. Through the arrangement of the above structure, the U-shaped clamping plates 64 clamp and straighten the two sides of the square billet. The U-shaped clamping plates 64 can apply additional pressure on both sides of the square billet to prevent the square billet from lateral displacement or deflection, ensuring that it remains stable during the rolling process. At the same time, the scraper plate 67 further applies pressure on the top of the square billet to control the upper shape of the square billet to prevent the billet from being deformed due to the upper and lower parts. To solve the deformation problem caused by asymmetric pressure, the two U-shaped clamps 64 are located between the inner sides of the U-shaped inclined plate 68, and the scraper 1 65, the scraper 2 67 and the two U-shaped clamps 64 on one side close to the billet discharge guide roller 3 are all chamfered. Through the arrangement of the above structure, the chamfered parts of the scraper 1 65, the scraper 2 67 and the two U-shaped clamps 64 will scrape off the oxide layer on the surface of the billet, thereby avoiding the problem that the uneven distribution of the oxide layer on the surface of the billet will cause uneven pressure distribution on the surface of the billet, affecting the clamping effect of the U-shaped clamp 64, and causing uneven shape control of the billet after rolling.

[0019] The straightening device 6 also includes two slide bars 610, two side frames 613, two hinged rods 615, and two elastic telescopic rods 616. The two side frames 613 are hinged on the side of the scraper 2 67 away from the blank discharge guide roller 3, and as shown in FIG. Figure 7 As shown, a spring is provided between the side frame 613 and the outer wall of the scraper 2 67, a contact wheel 614 is rotatably installed between the two side frames 613, diamond columns 612 are fixed on both sides of the rotating shaft of the contact wheel 614, the fixed ends of the two elastic telescopic rods 616 are respectively fixed on the side away from each other of the two U-shaped clamps 64, the telescopic ends of the two elastic telescopic rods 616 are fixed with push rods 611, the two slide rods 610 are respectively slidably installed on the side away from each other of the two U-shaped clamps 64, a plurality of shovel plates 69 are fixed on the side of the two slide rods 610 close to the blank discharge guide roller 3, and one end of the two hinged rods 615 is respectively fixed to the side of the two U-shaped clamps 64. Hinged at the top of the two sliding rods 610, the other ends of the two hinged rods 615 are respectively hinged at the outer walls of the two push rods 611, and a number of shovel plates 69 are respectively in contact with the chamfered outer walls of the two U-shaped clamps 64. The push rods 611 are located on the movement trajectory of the diamond column 612. Through the arrangement of the above structure, the sliding rods 610 drive the shovel plates 69 to dynamically shovel the oxide layer on the surface of the square billet. The shovel plates 69 can effectively remove the oxide scale on the surface of the square billet by dynamically shoveling the oxide layer, thereby making the surface of the square billet smoother and smoother, and reducing the impact of uneven distribution of oxide scale on the rolling process of the square billet.

[0020] The straightening device 6 also includes two elastic telescopic rods 617 and two pressing plates 618. The fixed ends of the two elastic telescopic rods 617 are fixed on the top of the scraper 67. The two telescopic pressing plates 618 are respectively fixed on the top of the telescopic ends of the two elastic telescopic rods 617. The bottoms of the two pressing plates 618 are respectively in contact with the top of the side frame 613. Through the arrangement of the above-mentioned structure, when the side frame 613 swings downward, it will drive the contact wheel 614 to swing downward, thereby ensuring that the contact wheel 614 can effectively contact the top surface of the billet, avoiding the gap between the bottom surface of the scraper 67 and the top surface of the billet, resulting in the problem that the billet cannot effectively drive the contact wheel 614 to rotate, thereby indirectly ensuring the dynamic and effective operation of the shovel plate 69.

[0021] The rolling assembly 5 includes a U-shaped frame 51, which is fixed on one side of the equipment body 1. A lower pressure roller 52 is rotatably installed on the inner wall below the U-shaped frame 51, and the lower pressure roller 52 is driven by a motor. A slide groove 53 is provided on both sides of the U-shaped frame 51, and sliders 54 are slidably installed inside the two slide grooves 53. An upper pressure roller 55 is rotatably installed between the two sliders 54. Hydraulic cylinders 56 are fixed on both sides of the top of the U-shaped frame 51, and the bottom of the telescopic end of the hydraulic cylinder 56 is fixedly connected to the top of the slider 54. When the hydraulic cylinder 56 is started, the telescopic end of the hydraulic cylinder 56 pushes the slider 54 to drive the upper pressure roller 55 to move downward, so that the distance between the upper pressure roller 55 and the lower pressure roller 52 can be adjusted according to the rolling thickness of the square billet.

[0022] When in use, the strip-shaped billet at the crystallizer 2 moves downward along the billet discharge guide roller 3 under the action of its own gravity until the billet falls on the conveying roller 4. When the conveying roller 4 drives the billet to move to the U-shaped inclined plate 68, the billet will push the inclined surface of the U-shaped inclined plate 68 to drive the U-shaped inclined plate 68 to move upward. The U-shaped inclined plate 68 drives the scraper 2 67 to move upward along the outside of the two T-shaped columns 66. The spring corresponding to the scraper 2 67 is compressed. At the same time, under the action of the spring force corresponding to the scraper 2 67, the scraper 2 67 will be tightly attached to the top of the billet. In this process, the billet will pass between the two U-shaped clamping plates 64, and the bidirectional screw 62 is driven by the motor to rotate. The bidirectional screw 62 drives the U-shaped clamping plate 64 to move along the outside of the sliding column 63 toward the center of the equipment body 1, thereby making the U-shaped The clamping plates 64 clamp and straighten the two sides of the billet. The U-shaped clamping plates 64 can apply additional pressure on the two sides of the billet to prevent the billet from lateral displacement or deflection, ensuring that it remains stable during the rolling process. At the same time, the second scraper 67 further applies pressure on the top of the billet to control the upper shape of the billet and prevent deformation problems caused by asymmetric pressures from the upper and lower parts. The straightened billet will pass through the rolling assembly 5, and the rolling assembly 5 can be started to roll the billet; at the same time, the chamfered parts of the scraper 1 65, the scraper 2 67 and the two U-shaped clamping plates 64 will scrape off the oxide layer on the surface of the billet, thereby avoiding the uneven distribution of the oxide layer on the surface of the billet, which will cause uneven pressure distribution on the surface of the billet, affect the clamping effect of the U-shaped clamping plates 64, and cause the problem of uneven shape control of the billet after rolling.

[0023] When the scraper 2 67 is in close contact with the top of the billet, the scraper 2 67 drives the contact wheel 614 to contact the top of the billet through the side frame 613. When the conveying roller 4 drives the billet to move, the billet drives the contact wheel 614 to rotate under the action of the friction between the billet and the contact wheel 614, and the contact wheel 614 drives the diamond column 612 to rotate. The diamond column 612 pushes the push rod 611 to move in the direction of the elastic telescopic rod 1 616. The telescopic end of the elastic telescopic rod 1 616 is compressed, and the push rod 611 pulls the hinged rod 615 to drive the slide bar 610 to vertically move along the outer wall of the U-shaped clamp 64. The slide bar 610 drives the shovel plate 69 to dynamically shovel the oxide layer on the surface of the billet. The shovel plate 69 can effectively remove the oxide scale on the surface of the billet by dynamically shoveling the oxide layer, thereby making the surface of the billet smoother and reducing the uneven distribution of the oxide scale on the billet. The impact of the billet rolling process; at the same time, when the rolling assembly 5 rolls the square billet, the thickness of the square billet will become thinner, so that the top surface of the square billet will have a certain inclination. At this time, there will be a certain gap between the bottom surface of the scraper 2 67 and the top surface of the square billet, which will easily make the contact wheel 614 unable to contact the top surface of the square billet well. At this time, under the elastic force of the elastic telescopic rod 2 617, the telescopic end of the elastic telescopic rod 2 617 will drive the pressing plate 618 to press the side frame 613, so that the side frame 613 has a tendency to swing downward. When the side frame 613 swings downward, it will drive the contact wheel 614 to swing downward, thereby ensuring that the contact wheel 614 can effectively contact the top surface of the square billet, avoiding the gap between the bottom surface of the scraper 2 67 and the top surface of the square billet, resulting in the problem that the square billet cannot effectively drive the contact wheel 614 to rotate, thereby indirectly ensuring the dynamic and effective operation of the shovel plate 69.

[0024] See also Figure 1 - Fig. 9 On the basis of the above-mentioned embodiment, in another embodiment of the present invention, a pre-pressing device 7 is provided on the side of the straightening device 6 away from the blank discharge guide roller 3.

[0025] The pre-pressing device 7 includes two elastic telescopic plates 71 and two L-shaped columns 78. The fixed ends of the two elastic telescopic plates 71 are respectively fixed to the top two sides of the equipment body 1. The outer walls of the telescopic ends of the two elastic telescopic plates 71 are fixed with L-shaped connecting rods 73. The end of the L-shaped connecting rod 73 away from the elastic telescopic plate 71 is fixedly connected to the outer wall of the scraper 2 67. A shaft 72 is rotatably installed between the tops of the telescopic ends of the two elastic telescopic plates 71. Fixed rods 74 are fixed on both sides of the outer wall of the shaft 72. A plurality of guide rollers 75 are rotatably installed between the two fixed rods 74. A slide groove 2 76 is provided on the outer wall of the fixed rod 74 away from the shaft 72. The two L-shaped columns 78 are respectively fixed to the sides of the two sliders 54 away from each other. The end of the L-shaped column 78 away from the slider 54 slides A stabilizing roller 77 is installed inside the second slide 76 and is rotatably installed between the two L-shaped column rods 78, and the bottom of the stabilizing roller 77 is in the same horizontal plane as the bottom of the upper pressure roller 55. Through the arrangement of the above structure, the fixed rod 74 drives the guide roller 75 to tilt, so that when the square billet passes through several inclined guide rollers 75, the inclined guide rollers 75 can apply a proper angle to the square billet, so that the square billet maintains an optimal angle and direction when entering the rolling zone between the lower pressure roller 52 and the upper pressure roller 55, which is conducive to the uniformity and stability of subsequent rolling. At the same time, through the pre-pressing effect of the guide roller 75, part of the initial deformation of the square billet is completed in advance, reducing the pressure burden of the roller in the subsequent rolling process, thereby improving the working efficiency and stability of the rolling equipment.

[0026] When in use, the hydraulic cylinder 56 is started, and the telescopic end of the hydraulic cylinder 56 pushes the slider 54 to drive the upper pressure roller 55 to move downward, so that the distance between the upper pressure roller 55 and the lower pressure roller 52 can be adjusted according to the rolling thickness of the square billet. At the same time, the slider 54 drives the L-shaped column rod 78 and the stabilizing roller 77 to move accordingly. When the U-shaped inclined plate 68 drives the scraper plate 67 to move upward along the outside of the two T-shaped columns 66, the scraper plate 67 drives the telescopic end of the elastic telescopic plate 71 to move upward through the L-shaped connecting rod 73, and the telescopic end of the elastic telescopic plate 71 drives one end of the fixed rod 74 to move upward through the shaft rod 72, and the other end of the fixed rod 74 is supported by the slide groove 77. 6 and the L-shaped column rod 78, the fixed rod 74 is tilted, and the fixed rod 74 drives the guide roller 75 to be tilted, so that when the square billet passes through the plurality of tilted guide rollers 75, the tilted guide rollers 75 can apply a proper angle to the square billet, so that the square billet maintains an optimal angle and direction when entering the rolling zone between the lower pressure roller 52 and the upper pressure roller 55, which is conducive to the uniformity and stability of subsequent rolling. At the same time, through the pre-pressing effect of the guide roller 75, part of the initial deformation of the square billet is completed in advance, reducing the pressure burden of the rollers in the subsequent rolling process, thereby improving the working efficiency and stability of the rolling equipment.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A continuous rolling equipment for a billet continuous casting production line, comprising an equipment body (1), a crystallizer (2) being fixed on the top of the equipment body (1), a plurality of billet discharge guide rollers (3) being rotatably mounted on one side of the interior of the equipment body (1), a plurality of conveying rollers (4) being rotatably mounted on the lower part of the interior of the equipment body (1), and a rolling assembly (5) being arranged on one side of the equipment body (1), characterized in that: A straightening device (6) is provided on the top of the equipment body (1), and the straightening device (6) comprises a bidirectional screw (62), a slide column (63), a scraper plate 1 (65), a scraper plate 2 (67), two U-shaped frames 2 (61), two U-shaped clamping plates (64), and two T-shaped columns (66). The two U-shaped frames 2 (61) are respectively fixed on both sides of the top of the equipment body (1). The bidirectional screw (62) is rotatably mounted between one side of the two U-shaped frames 2 (61), and the bidirectional screw (62) is driven by a motor. The slide column (63) is fixed between the other sides of the two U-shaped frames 2 (61). One end of the two U-shaped clamps (64) is threadedly connected to the bidirectional screw (62), and the other ends of the two U-shaped clamps (64) are slidably mounted on the outside of the sliding column (63). The scraper plate 1 (65) is fixed to the lower inner wall of the equipment body (1). The two T-shaped columns (66) are fixed on both sides of the top of the scraper plate 1 (65). The scraper plate 2 (67) is slidably mounted on the outside of the two T-shaped columns (66), and a spring is provided between the T-shaped column (66) and the top of the scraper plate 2 (67). A U-shaped inclined plate (68) is fixed on the side of the scraper plate 2 (67) close to the blank discharge guide roller (3).

2. The continuous rolling equipment for a billet continuous casting production line according to claim 1, characterized in that: The scraper plate 1 (65) and the scraper plate 2 (67) are both located between the inner sides of the two U-shaped clamping plates (64), and the two U-shaped clamping plates (64) are both located between the inner sides of the U-shaped inclined plates (68).

3. The continuous rolling equipment for a billet continuous casting production line according to claim 1, characterized in that: The scraper plate 1 (65), the scraper plate 2 (67) and the two U-shaped clamping plates (64) are all chamfered on one side close to the blank discharge guide roller (3).

4. The continuous rolling equipment for a billet continuous casting production line according to claim 1, characterized in that: The straightening device (6) further comprises two sliding rods (610), two side frames (613), two hinged rods (615), and two elastic telescopic rods (616). The two side frames (613) are hinged to the side of the scraper (67) away from the billet discharge guide roller (3), and a spring is provided between the side frames (613) and the outer wall of the scraper (67). A contact wheel (614) is rotatably mounted between the two side frames (613). Both sides of the rotating shaft of the contact wheel (614) are fixed with rhombus-shaped columns (612). The fixed ends of the two elastic telescopic rods (616) are respectively The two elastic telescopic rods (616) are respectively fixed on the side away from each other of the two U-shaped clamps (64), the telescopic ends of the two elastic telescopic rods (616) are fixed with push rods (611), the two sliding rods (610) are respectively slidably installed on the side away from each other of the two U-shaped clamps (64), a plurality of shovel plates (69) are fixed on the side of the two sliding rods (610) close to the blank discharge guide roller (3), one end of the two hinged rods (615) is respectively hinged on the top of the two sliding rods (610), and the other end of the two hinged rods (615) is respectively hinged on the outer wall of the two push rods (611).

5. The continuous rolling equipment for a billet continuous casting production line according to claim 4, characterized in that: A plurality of the shovel plates (69) are respectively in contact with the chamfered outer walls of the two U-shaped clamping plates (64), and the push rod (611) is located on the movement track of the rhombus column (612).

6. The continuous rolling equipment for a billet continuous casting production line according to claim 4, characterized in that: The straightening device (6) further comprises two elastic telescopic rods (617) and two pressing plates (618), wherein the fixed ends of the two elastic telescopic rods (617) are both fixed to the top of the scraper plate (67), and the two telescopic pressing plates (618) are respectively fixed to the top of the telescopic ends of the two elastic telescopic rods (617).

7. The continuous rolling equipment for a billet continuous casting production line according to claim 6, characterized in that: The bottoms of the two pressing plates (618) are in contact with the tops of the side frames (613) respectively.

8. The continuous rolling equipment for a billet continuous casting production line according to claim 1, characterized in that: The rolling assembly (5) comprises a U-shaped frame (51), the U-shaped frame (51) being fixed to one side of the equipment body (1), a lower pressure roller (52) being rotatably mounted on the inner wall below the U-shaped frame (51), the lower pressure roller (52) being driven by a motor, a slide groove (53) being provided on both sides of the U-shaped frame (51), a slider (54) being slidably mounted inside the two slide grooves (53), an upper pressure roller (55) being rotatably mounted between the two sliders (54), and a hydraulic cylinder (56) being fixed on both sides of the top of the U-shaped frame (51), the bottom of the telescopic end of the hydraulic cylinder (56) being fixedly connected to the top of the slider (54).

9. The continuous rolling equipment for a billet continuous casting production line according to claim 8, characterized in that: A pre-pressing device (7) is provided on the side of the straightening device (6) away from the blank discharge guide roller (3), and the pre-pressing device (7) comprises two elastic telescopic plates (71) and two L-shaped column rods (78). The fixed ends of the two elastic telescopic plates (71) are respectively fixed to the two sides of the top of the equipment body (1), and the outer walls of the telescopic ends of the two elastic telescopic plates (71) are fixed with L-shaped connecting rods (73). One end of the L-shaped connecting rod (73) away from the elastic telescopic plate (71) is fixedly connected to the outer wall of the second scraper (67), and a shaft rod (72) is rotatably installed between the tops of the telescopic ends of the two elastic telescopic plates (71). The shaft rod Fixed rods (74) are fixed on both sides of the outer wall of (72), and a plurality of guide rollers (75) are rotatably installed between the two fixed rods (74). A second slide groove (76) is provided on the outer wall of the fixed rod (74) away from the shaft rod (72). The two L-shaped columns (78) are respectively fixed on the sides of the two sliders (54) away from each other, and one end of the L-shaped column (78) away from the slider (54) is slidably installed inside the second slide groove (76). A stabilizing roller (77) is rotatably installed between the two L-shaped columns (78), and the bottom of the stabilizing roller (77) is in the same horizontal plane as the bottom of the upper pressure roller (55).

10. A method for using a continuous rolling device for a billet continuous casting production line, using the continuous rolling device for a billet continuous casting production line according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, the square billet formed into a strip at the crystallizer (2) moves downward along the billet discharge guide roller (3) under the action of its own gravity until the square billet falls on the conveying roller (4); S2. When the conveying roller (4) drives the billet to move to the U-shaped inclined plate (68), the billet pushes the inclined surface of the U-shaped inclined plate (68) to drive the U-shaped inclined plate (68) to move upward, and the U-shaped inclined plate (68) drives the second scraper (67) to move upward along the outside of the two T-shaped columns (66). The spring corresponding to the second scraper (67) is compressed. At the same time, under the action of the spring force corresponding to the second scraper (67), the second scraper (67) will be tightly attached to the top of the billet, and the second scraper (67) will apply pressure to the top of the billet to control the shape of the upper part of the billet; S3, at the same time, the billet passes between the two U-shaped clamping plates (64), and the bidirectional screw (62) is driven by the motor to rotate, and the bidirectional screw (62) drives the U-shaped clamping plates (64) to move along the outside of the sliding column (63) toward the center of the equipment body (1), so that the U-shaped clamping plates (64) clamp and straighten the two sides of the billet; S4. The straightened square billet passes through a rolling assembly (5). The rolling assembly (5) is started to roll the square billet.

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