Two-arc two-line composite vertical roll rolling pass mechanism

Abstract

The utility model discloses a two-arc two-line composite vertical roll rolling pass mechanism which comprises two symmetrically-distributed rolling wheel bodies, rolling side grooves are formed in the rolling wheel bodies, lower-layer acting conical surfaces are arranged at the bottoms of the inner sides of the rolling side grooves, and upper-layer acting conical surfaces are arranged at the bottoms of the inner sides of the lower-layer acting conical surfaces. A lower-layer arc chamfer is arranged at the junction of the top end of the lower-layer acting conical surface and the side face of the rolling side groove, and an upper-layer guiding conical surface is arranged at the top of the inner side of the rolling side groove. The two corners of the top of the blank are extruded into two slopes with different inclination angles, arc extrusion is carried out on the corners of the two slopes through the upper-layer guide arc chamfer and the adjacent internal action arc chamfer, the 90-degree corners of the rectangular blank are removed through rolling, the defects caused by too fast cooling at the corners of the rectangular blank are effectively overcome, and the production efficiency is improved. And the overall rolling effect of the blank is improved.

Description

Technical Field

[0001] This utility model relates to the field of profile processing technology, specifically a two-arc two-line composite vertical roll forming die mechanism. Background Technology

[0002] Continuous casting refers to the process of taking molten steel from the steelmaking furnace and directly injecting it into a specific continuous casting equipment. Through a series of process operations, the molten steel solidifies into a steel billet with a certain cross-sectional shape and size specifications in continuous motion. It has replaced the traditional ingot casting process and greatly improved the efficiency and quality of steel production.

[0003] However, due to the current limitations of the solidification process, the quality of the four corners of the rectangular billet is still unstable. After defects occur, hot rolling and cold rolling cannot fully or effectively compensate for them. Since the four corners of the continuously cast billet are 90 degrees, when the billet is rolled by the rolling rollers, the heat dissipation rate of the billet's edges and corners will be significantly higher than that of its center. This causes the iron scale residue generated by the cooling and oxidation of the edges and corners of the billet to be pressed into the surface of the coil when it is rolled into a coil, resulting in defects and thus reducing the quality of the rolling rollers. Utility Model Content

[0004] This invention provides a two-arc, two-line composite vertical roll forming die mechanism, which can effectively solve the problem mentioned in the background art where the quality of the four corners of the rectangular billet is still unstable due to the limitations of the solidification process. After defects occur, hot rolling and cold rolling cannot fully or effectively compensate for them. Since the four corners of the continuously cast billet are 90 degrees, when the billet is rolled by the rolling rollers, the heat dissipation rate of the billet's edges and corners will be significantly higher than that of its center. This causes the iron scale residue generated by the cooling and oxidation of the edges and corners of the billet to be pressed into the surface of the coil when it is rolled into a coil, resulting in defects and thus reducing the quality of the rolling rollers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a two-arc two-line composite vertical roll forming die mechanism, comprising two symmetrically distributed rolling wheel bodies, wherein a three-dimensional arc-shaped corner roller mechanism is provided on the side of the rolling wheel body;

[0006] The three-dimensional arc-shaped corner roller mechanism includes a rolling side groove, a lower working cone surface, a lower arc chamfer, an upper guiding cone surface, an upper guiding arc chamfer, an adjacent inner working cone surface, and an adjacent inner working arc chamfer.

[0007] The main body of the rolling wheel is provided with a rolling side groove, and a lower working cone surface is provided at the bottom of the inner side of the rolling side groove. A lower arc chamfer is provided at the junction of the top of the lower working cone surface and the side of the rolling side groove.

[0008] The top of the inner side of the roll side groove is provided with an upper guide cone surface, and the bottom of the upper guide cone surface is provided with an adjacent inner action cone surface;

[0009] An upper guide arc chamfer is provided at the junction of the upper guide cone surface and the adjacent inner action cone surface, and an adjacent inner action arc chamfer is provided at the junction of the adjacent inner action cone surface and the side surface of the roll side groove.

[0010] Preferably, the tapers of the lower working cone surface, the upper guiding cone surface, and the adjacent internal working cone surface are all different, and the chamfer radii of the adjacent internal working arc chamfer, the upper guiding arc chamfer, and the adjacent internal working arc chamfer are set according to the profile size.

[0011] Preferably, the top of the rolling mill body is provided with a top dynamic isolation recording structure;

[0012] The top dynamic isolation recording structure includes an arc-shaped guide rail, an arc-shaped mounting base, a rubber connecting block, a central mounting horizontal plate, an arc-shaped connecting block, an arc-shaped mounting block, a filter protection box, and an infrared imaging lens;

[0013] The top edges of the two main bodies of the rolling mill are engaged with arc-shaped guide rails, and the top ends of the two arc-shaped guide rails are slidably engaged with arc-shaped mounting seats. The ends of the arc-shaped mounting seats are fixedly connected with rubber connecting blocks.

[0014] A central mounting plate is bonded between the two rubber connecting blocks, and arc-shaped connecting blocks are fixedly connected to both ends of the top surface of the central mounting plate. An arc-shaped mounting block is fixedly connected to the top of the arc-shaped mounting seat.

[0015] A filter protection box is fixedly connected to the top center of the central mounting plate via a rectangular block, and an infrared imaging lens is embedded in the inner center of the filter protection box.

[0016] Preferably, the arc-shaped connecting block and the arc-shaped mounting block are connected by bolts and nuts, a heat-insulating filter is snapped into the end of the filter protection box, and the data output end of the infrared imaging lens is connected to an external receiving end.

[0017] Preferably, the top surface of the rolling mill body is provided with a magnetic counterweight shock absorption mechanism;

[0018] The magnetic counterweight shock absorption mechanism includes a magnetic rectangular box, a rubber conical plate, a transmission lifting slide plate, and a counterweight arc block;

[0019] The main body of the rolling mill has magnetic rectangular boxes that are equidistantly adsorbed on the top surface of the roller along the circumferential direction. A rubber conical piece is glued to the top of the inner side of the magnetic rectangular box. A transmission lifting slide plate is slidably installed on the bottom of the inner side of the magnetic rectangular box. A counterweight arc block is embedded in the middle of the top of the transmission lifting slide plate.

[0020] Preferably, the outer side of the transmission lifting slide plate is in close sliding contact with the inner wall of the magnetic rectangular box, and the rubber conical plate is aligned with the counterweight arc block.

[0021] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use.

[0022] 1. A three-dimensional arc-shaped corner roller mechanism is set up. The blank to be rolled is guided by the side groove of the rolling mill. During the rolling process, the blank is supported by the lower acting cone surface. The bottom two corners of the rectangular blank are rolled into arc shape by the lower arc chamfer. The top two corners of the blank are squeezed in stages by the upper guide cone surface and the adjacent inner acting cone surface, so that the top two corners of the blank are squeezed into two inclined surfaces with different inclination angles. The corners of the two inclined surfaces are rounded by the upper guide arc chamfer and the adjacent inner acting arc chamfer. The 90-degree corners of the rectangular blank are removed by rolling, which effectively removes the defects caused by the excessive cooling at the corners of the rectangular blank and improves the overall rolling effect of the blank.

[0023] Meanwhile, since the structure does not alter the existing dimensions of the rolls and bearing housings, as well as the on-site installation, shape, and tolerance fit, and only the die type is redesigned, it features zero on-site modifications, minimal impact on production load, minimal or no modifications to the cooling water, zero cost or minimal cost to the forming tool, and a significant effect on the edges of low-carbon billets, improving the surface quality of the hot-rolled edges and also improving the metallographic structure of the edges.

[0024] 2. A top dynamic isolation recording structure is set up. The arc-shaped mounting base and its components are installed synchronously through the arc-shaped guide rail. The central mounting horizontal plate is flexibly connected between the two mounting arc-shaped bases through rubber connecting blocks. The central mounting horizontal plate is stretched and fixed by the arc-shaped connecting blocks and arc-shaped mounting blocks. The infrared imaging lens is protected by a filter protective box to prevent the infrared imaging lens from being affected by the temperature of the billet and glare. The infrared imaging lens monitors the billet in the roll forming process in real time to ensure that abnormal conditions of the billet can be detected in time, thereby ensuring the smooth processing of the billet.

[0025] 3. A magnetic counterweight damping mechanism is installed. The magnetic rectangular box and its internal components are magnetically attached to the top of the rolling mill body. When the rolling mill body vibrates, the vibration is directly transmitted to the inside of the magnetic rectangular box. The vibration of the magnetic rectangular box is transmitted to the counterweight arc block through the transmission lifting slide. Under the action of vibration, the counterweight arc block bounces along the inside of the magnetic rectangular box. The inside of the magnetic rectangular box is protected by rubber cones. The elastic deformation of the rubber cones consumes the kinetic energy of the counterweight arc block. The potential energy generated by the counterweight arc block during its bounce consumes the vibration kinetic energy of the rolling mill body, thereby effectively improving the stability of the rolling mill operation. Attached Figure Description

[0026] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0027] In the attached diagram:

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the three-dimensional arc-shaped corner roller mechanism of this utility model;

[0030] Figure 3 This is a schematic diagram of the top dynamic isolation recording structure of this utility model;

[0031] Figure 4 This is a schematic diagram of the magnetic counterweight shock absorption mechanism of this utility model;

[0032] Labels in the diagram: 1. Roller body;

[0033] 2. Three-dimensional arc-shaped corner roller mechanism; 201. Rolling side groove; 202. Lower layer working cone surface; 203. Lower layer rounded chamfer; 204. Upper layer guide cone surface; 205. Upper layer guide rounded chamfer; 206. Adjacent inner working cone surface; 207. Adjacent inner working rounded chamfer;

[0034] 3. Top dynamic isolation recording structure; 301. Arc-shaped guide rail; 302. Arc-shaped mounting base; 303. Rubber connecting block; 304. Center mounting plate; 305. Arc-shaped connecting block; 306. Arc-shaped mounting block; 307. Filter protection box; 308. Infrared imaging lens;

[0035] 4. Magnetic counterweight shock absorption mechanism; 401. Magnetic rectangular box; 402. Rubber conical plate; 403. Transmission lifting slide plate; 404. Counterweight arc block. Detailed Implementation

[0036] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0037] Example: Figure 1-4 As shown, this utility model provides a technical solution, a two-arc two-line composite vertical roll forming die mechanism, including two symmetrically distributed rolling wheel bodies 1, and a three-dimensional arc-shaped corner roller mechanism 2 is provided on the side of the rolling wheel body 1;

[0038] The three-dimensional arc-shaped corner roller mechanism 2 includes a rolling side groove 201, a lower working cone surface 202, a lower arc chamfer 203, an upper guiding cone surface 204, an upper guiding arc chamfer 205, an adjacent inner working cone surface 206, and an adjacent inner working arc chamfer 207;

[0039] The main body 1 of the rolling wheel is provided with a rolling side groove 201. A lower working cone 202 is provided at the bottom of the inner side of the rolling side groove 201. A lower arc chamfer 203 is provided at the junction of the top of the lower working cone 202 and the side of the rolling side groove 201.

[0040] The top of the inner side of the roll side groove 201 is provided with an upper guide cone surface 204, and the bottom of the upper guide cone surface 204 is provided with an adjacent inner action cone surface 206;

[0041] An upper guide cone 204 and an adjacent inner action cone 206 are provided with an upper guide arc chamfer 205 at their junction, and an adjacent inner action arc chamfer 207 is provided at the junction of the adjacent inner action cone 206 and the side of the roll side groove 201. The tapers of the lower action cone 202, the upper guide cone 204, and the adjacent inner action cone 206 are all different. The chamfer radii of the adjacent inner action arc chamfer 207, the upper guide arc chamfer 205, and the adjacent inner action arc chamfer 207 are set according to the profile size. The roll side groove 201 guides the blank to be rolled, and during the rolling process, the lower... The action cone 202 supports the billet, and the bottom two corners of the rectangular billet are rolled into an arc shape by the lower rounded chamfer 203. The top two corners of the billet are graded and squeezed by the upper guide cone 204 and the adjacent inner action cone 206, so that the top two corners of the billet are squeezed into two inclined surfaces with different inclination angles. The corners of the two inclined surfaces are rounded by the upper guide rounded chamfer 205 and the adjacent inner action rounded chamfer 207, so as to remove the 90-degree corners of the rectangular billet by rolling, effectively removing the defects caused by excessive cooling at the corners of the rectangular billet, and improving the overall rolling effect of the billet.

[0042] Meanwhile, since the structure does not change the existing dimensions of the rolls and bearing housings, as well as the on-site installation, shape, and tolerance fit, and only the die type is redesigned, it has the characteristics of zero on-site modification, minimal impact on production load, minimal or no modification to cooling water, zero cost or minimal cost to the forming tool, and a significant effect on the edge of low carbon billet, improving the surface quality of hot rolled edge and also improving the edge metallographic structure.

[0043] A top dynamic isolation recording structure 3 is provided on the top of the rolling mill body 1;

[0044] The top dynamic isolation recording structure 3 includes an arc-shaped guide rail 301, an arc-shaped mounting seat 302, a rubber connecting block 303, a central mounting plate 304, an arc-shaped connecting block 305, an arc-shaped mounting block 306, a filter protection box 307, and an infrared imaging lens 308.

[0045] Two roller bodies 1 are fitted with arc-shaped guide rails 301 on the top edge, and arc-shaped mounting seats 302 are slidably fitted at the top of each of the two arc-shaped guide rails 301. Rubber connecting blocks 303 are fixedly connected to the ends of the arc-shaped mounting seats 302.

[0046] A central mounting plate 304 is bonded between two rubber connecting blocks 303. Arc-shaped connecting blocks 305 are fixedly connected to both ends of the top surface of the central mounting plate 304. Arc-shaped mounting blocks 306 are fixedly connected to the top of the mounting arc-shaped seat 302.

[0047] A filter protection box 307 is fixedly connected to the top center of the central mounting plate 304 via a rectangular block. An infrared imaging lens 308 is embedded in the center of the inner side of the filter protection box 307. The arc-shaped connecting block 305 and the arc-shaped mounting block 306 are connected by bolts and nuts. A heat-insulating filter is snapped into the end of the filter protection box 307. The data output end of the infrared imaging lens 308 is connected to an external receiver. The arc-shaped mounting base 302 and its components are synchronously installed via the arc-shaped guide rail 301. The rubber connecting block 303 connects the components to the mounting base 302. The central mounting plate 304 is flexibly connected between two mounting arc-shaped seats 302. The central mounting plate 304 is stretched and fixed by the arc-shaped connecting block 305 and the arc-shaped mounting block 306. The infrared imaging lens 308 is protected by the filter protection box 307 to prevent the infrared imaging lens 308 from being affected by the temperature of the billet and the glare of the light. The infrared imaging lens 308 monitors the billet in the roll forming in real time to ensure that abnormal conditions of the billet can be detected in time, thereby ensuring the smooth processing of the billet.

[0048] A magnetic counterweight damping mechanism 4 is provided on the top surface of the main body 1 of the rolling mill;

[0049] The magnetic counterweight shock absorption mechanism 4 includes a magnetic rectangular box 401, a rubber conical plate 402, a transmission lifting slide plate 403, and a counterweight arc block 404;

[0050] A magnetic rectangular box 401 is equidistantly attached to the top surface of the rolling mill body 1 along the circumferential direction. A rubber conical piece 402 is adhered to the top inner side of the magnetic rectangular box 401. A transmission lifting slide plate 403 is slidably installed on the bottom inner side of the magnetic rectangular box 401. A counterweight arc block 404 is embedded in the center of the top of the transmission lifting slide plate 403. The outer side of the transmission lifting slide plate 403 is tightly slidably fitted with the inner wall of the magnetic rectangular box 401. The rubber conical piece 402 and the counterweight arc block 404 are aligned with each other. The magnetic rectangular box 401 and its internal components are installed on the top of the rolling mill body 1 by magnetic attraction. When the rolling mill body 1 moves... When vibrating, the vibration is directly transmitted to the inside of the magnetic rectangular box 401. The vibration of the magnetic rectangular box 401 is transmitted to the counterweight arc block 404 through the transmission lifting slide plate 403. Under the action of vibration, the counterweight arc block 404 jumps along the inside of the magnetic rectangular box 401. The inside of the magnetic rectangular box 401 is protected by the rubber cone plate 402. The elastic deformation of the rubber cone plate 402 consumes the kinetic energy of the counterweight arc block 404. The potential energy generated by the jumping of the counterweight arc block 404 consumes the vibration kinetic energy of the roller body 1, thereby effectively improving the stability of the roller operation.

[0051] The working principle and usage process of this utility model: In the actual application process, when it is necessary to use a rolling mill to extrude the billet, the main body 1 of the rolling mill needs to be installed into the corresponding mounting frame first, so that the billet can be extruded and shaped by the main body 1 of the rolling mill. The side groove 201 guides the billet to be rolled and rolls it. During the rolling process, the lower working cone surface 202 supports the billet, and the lower rounded chamfer 203 rolls the bottom two corners of the rectangular billet into a rounded shape.

[0052] Then, the top two corners of the billet are graded and extruded through the upper guide cone 204 and the adjacent inner action cone 206, so that the top two corners of the billet are extruded into two inclined surfaces with different inclination angles. The corners of the two inclined surfaces are then rounded and extruded through the upper guide arc chamfer 205 and the adjacent inner action arc chamfer 207, so as to remove the 90-degree corners of the rectangular billet by rolling, effectively removing the defects caused by excessive cooling at the corners of the rectangular billet, and improving the overall rolling effect of the billet.

[0053] Meanwhile, since the structure does not change the existing dimensions of the rolls and bearing housings, as well as the on-site installation, shape, and tolerance fit, and only the die type is redesigned, it has the characteristics of zero on-site modification, minimal impact on production load, minimal or no modification to cooling water, zero cost or minimal cost to the forming tool, and a significant effect on the edge of low carbon billet, improving the surface quality of hot rolled edge and also improving the edge metallographic structure.

[0054] When it is necessary to record the state of the billet profile after roll forming, the mounting arc seat 302 and its components are installed synchronously through the arc guide rail 301. The central mounting horizontal plate 304 is flexibly connected between the two mounting arc seats 302 through the rubber connecting block 303. The central mounting horizontal plate 304 is stretched and fixed through the arc connecting block 305 and the arc mounting block 306. The infrared imaging lens 308 is protected by the filter protection box 307 to prevent the infrared imaging lens 308 from being affected by the temperature of the billet and the glare of the light. Then, the infrared imaging lens 308 is used to monitor the billet in roll forming in real time to ensure that abnormal conditions of the billet can be detected in time, thereby ensuring the smooth progress of billet processing.

[0055] When the main body 1 of the rolling mill needs to be buffered and damped during its rolling process, the magnetic rectangular box 401 and its internal components are installed on the top of the main body 1 of the rolling mill using magnetic attraction. When the main body 1 of the rolling mill vibrates, the vibration is directly transmitted to the inside of the magnetic rectangular box 401. The vibration of the magnetic rectangular box 401 is transmitted to the counterweight arc block 404 through the transmission lifting slide plate 403. Under the action of vibration, the counterweight arc block 404 jumps along the inside of the magnetic rectangular box 401. The inside of the magnetic rectangular box 401 is protected by the rubber cone plate 402. The elastic deformation of the rubber cone plate 402 consumes the kinetic energy of the counterweight arc block 404. In addition, the potential energy generated by the jumping of the counterweight arc block 404 consumes the vibration kinetic energy of the main body 1 of the rolling mill, thereby effectively improving the stability of the rolling mill operation.

[0056] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A two-arc, two-line composite vertical roll forming die mechanism, comprising two symmetrically distributed rolling roller bodies (1), characterized in that: The main body (1) of the rolling mill is provided with a three-dimensional arc-shaped corner roller mechanism (2) on its side; The three-dimensional arc-shaped corner roller mechanism (2) includes a rolling side groove (201), a lower layer action cone surface (202), a lower layer arc chamfer (203), an upper layer guide cone surface (204), an upper layer guide arc chamfer (205), an adjacent inner action cone surface (206), and an adjacent inner action arc chamfer (207); The main body (1) of the rolling wheel is provided with a rolling side groove (201), and a lower working cone surface (202) is provided at the bottom of the inner side of the rolling side groove (201). A lower arc chamfer (203) is provided at the junction of the top of the lower working cone surface (202) and the side of the rolling side groove (201). The top inner side of the roll side groove (201) is provided with an upper guide cone surface (204), and the bottom of the upper guide cone surface (204) is provided with an adjacent inner action cone surface (206); An upper guide arc chamfer (205) is provided at the junction of the upper guide cone surface (204) and the adjacent inner action cone surface (206), and an adjacent inner action arc chamfer (207) is provided at the junction of the adjacent inner action cone surface (206) and the side of the roll side groove (201).

2. The two-arc, two-line composite vertical roll forming die mechanism according to claim 1, characterized in that, The taper of the lower working cone surface (202), the upper guiding cone surface (204), and the adjacent inner working cone surface (206) are all different. The chamfer radius of the adjacent inner working arc chamfer (207), the upper guiding arc chamfer (205), and the adjacent inner working arc chamfer (207) is set according to the profile size.

3. The two-arc, two-line composite vertical roll forming die mechanism according to claim 1, characterized in that, The top of the rolling mill body (1) is provided with a top dynamic isolation recording structure (3); The top dynamic isolation recording structure (3) includes an arc-shaped guide rail (301), an arc-shaped mounting base (302), a rubber connecting block (303), a central mounting plate (304), an arc-shaped connecting block (305), an arc-shaped mounting block (306), a filter protection box (307), and an infrared imaging lens (308). The top edges of the two roller bodies (1) are fitted with arc-shaped guide rails (301), and the top ends of the two arc-shaped guide rails (301) are slidably fitted with mounting arc-shaped seats (302). The ends of the mounting arc-shaped seats (302) are fixedly connected with rubber connecting blocks (303). A central mounting plate (304) is bonded between the two rubber connecting blocks (303). An arc-shaped connecting block (305) is fixedly connected to both ends of the top surface of the central mounting plate (304). An arc-shaped mounting block (306) is fixedly connected to the top of the mounting arc seat (302). The central mounting plate (304) has a filter protection box (307) fixedly connected to its top center via a rectangular block, and an infrared imaging lens (308) is embedded in the center of the inner side of the filter protection box (307).

4. The two-arc, two-line composite vertical roll forming die mechanism according to claim 3, characterized in that, The arc-shaped connecting block (305) and the arc-shaped mounting block (306) are connected by bolts and nuts. A heat-insulating filter is snapped into the end of the filter protection box (307). The data output end of the infrared imaging lens (308) is connected to the external receiving end.

5. The two-arc, two-line composite vertical roll forming die mechanism according to claim 1, characterized in that, The top surface of the main body (1) of the rolling mill is provided with a magnetic counterweight shock absorption mechanism (4); The magnetic counterweight shock absorption mechanism (4) includes a magnetic rectangular box (401), a rubber conical plate (402), a transmission lifting slide plate (403), and a counterweight arc block (404); The top surface of the rolling mill body (1) is equidistantly attached with magnetic rectangular boxes (401) along the circumferential direction. A rubber cone-shaped piece (402) is bonded to the top of the inner side of the magnetic rectangular box (401). A transmission lifting slide plate (403) is slidably installed on the bottom of the inner side of the magnetic rectangular box (401). A counterweight arc block (404) is embedded in the middle of the top of the transmission lifting slide plate (403).

6. The two-arc, two-line composite vertical roll forming die mechanism according to claim 5, characterized in that, The outer side of the transmission lifting slide plate (403) is tightly slidably attached to the inner wall of the magnetic rectangular box (401), and the rubber conical plate (402) is aligned with the counterweight arc block (404).

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