A finishing strip steel production line and production process

Abstract

The present invention relates to the field of metal rolling technology, and in particular to a finishing strip production line and production process, comprising: a support; a finishing unit installed on the support; the finishing unit comprises: a fixed frame, the fixed frame is fixedly connected to the support, the fixed frame is installed with two first sliding frames, the first sliding frames are rotatably provided with rotating rollers; a plurality of fixed rods, fixedly connected to adjacent first sliding frames, the fixed rods located on the same first sliding frame are a group; a second sliding frame, having two symmetrically distributed, slidingly provided on an adjacent group of fixed rods, a tension spring is installed between the second sliding frame and the adjacent group of fixed rods; a cooling mechanism, installed on the adjacent first sliding frame. The present invention cleans the oxide layer attached to the rotating roller by the second sliding frame, so as to ensure that the thickness of the strip steel is uniform and consistent after the rotating roller is rolled.

Description

Technical Field

[0001] The invention relates to the technical field of metal rolling, and in particular to a finishing strip steel production line and a production process. Background Art

[0002] A strip rolling line is a complex and highly automated system used to roll raw materials (such as billets or plates) into strips of required thickness and width. The line usually includes a raw material preparation area, a heating furnace, a roughing mill, a finishing mill, a cooling system and a coiler.

[0003] After searching, a patent with publication number CN118719805A discloses a device and method for rapid cutting and processing of scrap steel strips, including an inlet pinch roller, an emergency shear, and an outlet pinch roller arranged on a frame in sequence, assuming that the conveying direction of the steel strip is the X direction, the direction perpendicular to the X direction is the Y direction, and the direction perpendicular to the X direction and the Y direction is the Z direction. A mounting seat is arranged behind the outlet pinch roller, and a plurality of support rollers arranged at intervals along the X direction are arranged on the upper surface of the mounting seat, and a driving mechanism for driving the mounting seat to move along the Z direction is arranged on the lower surface of the mounting seat; a steel pushing device is arranged on one side of the mounting seat, and a steel stacking platform is arranged on the other side. This application can quickly cut the rolled steel strip when a steel jam or steel stacking accident occurs during downstream rolling production, and efficiently cut the steel strips that continue to arrive from the upstream into fixed length segments and quickly and neatly stack them, and then quickly remove the stacked scrap steel strips.

[0004] In the above-mentioned technology, only the rapid cutting process of the strip steel is considered when the strip steel is stuck or piled up during the rolling production. In the actual finishing process, when the rolling rollers are extruding and rolling the raw materials, the temperature of the raw materials will be transferred to the rolling rollers, resulting in the rolling rollers being too high in temperature. When the rolling roller temperature is too high, the high-temperature rolling rollers continue to extrude the raw materials during rotation, which will aggravate the wear of the rolling rollers and shorten their service life. At the same time, the oxide layer of the raw material will adhere to the high-temperature rolling rollers. The subsequent rotation of the rolling rollers causes the oxide layer attached to it to squeeze the raw material again. Affected by the thickness of the oxide layer, the thickness of the raw material after rolling is uneven, resulting in uneven thickness and poor quality of the finished strip steel. Summary of the invention

[0005] In order to overcome the problems mentioned in the above background, the present invention provides a finishing strip steel production line and production process.

[0006] Technical solution: A finishing strip steel production line, including:

[0007] A support, on which a cleaning unit and a cooling unit are installed;

[0008] A finishing unit, mounted on the support and located between the cleaning unit and the cooling unit, the finishing unit being used to roll the raw material to a desired thickness and width;

[0009] The finishing rolling unit comprises: a fixed frame, the fixed frame is fixedly connected to the support, the fixed frame is equipped with two symmetrically distributed first sliding frames through a hydraulic system, the first sliding frames are fixedly connected to motors, and the first sliding frames are rotatably provided with rotating rollers fixedly connected to output shafts on adjacent motors;

[0010] There are a plurality of fixing rods fixedly connected to adjacent first sliding frames, and the fixing rods located on the same first sliding frame form a group;

[0011] The second sliding frame has two symmetrically distributed second sliding frames, the two second sliding frames are respectively slidably arranged on an adjacent group of the fixing rods, a tension spring is installed between the second sliding frame and the adjacent group of the fixing rods, and the second sliding frame is used to clean impurities on the adjacent rotating rollers;

[0012] The cooling mechanism has two symmetrically distributed ones, and the two cooling mechanisms are respectively installed on adjacent first sliding frames, and the cooling mechanisms are used to evenly cool the adjacent rotating rollers.

[0013] Preferably, the second sliding frame is provided with a sleeve, and the outer side of the sleeve on the second sliding frame is provided with a plurality of staggered protrusions for forming multi-point contact between the sleeve and the adjacent rotating rollers.

[0014] Preferably, the cooling mechanism comprises:

[0015] A liquid inlet pipe is fixedly connected to the adjacent first sliding frame, the first sliding frame is provided with two symmetrically distributed liquid guide cavities, the liquid inlet pipe is communicated with the adjacent liquid guide cavities, the rotating roller is provided with a plurality of liquid guide holes and a plurality of through holes distributed circumferentially, the liquid guide holes on the same cross section perpendicular to the center line of the rotating roller are a group, the plurality of liquid guide holes are divided into two groups distributed in a mirror image, the two groups of liquid guide holes are respectively communicated with the adjacent liquid guide cavities, each group of liquid guide holes has a plurality of circumferentially distributed holes, and the through holes are respectively communicated with the two adjacent liquid guide holes;

[0016] A liquid discharge pipe, fixedly connected to the adjacent first sliding frame, and the liquid discharge pipe is communicated with the adjacent liquid guide cavity;

[0017] The stirring components have a plurality of groups distributed circumferentially, and the plurality of groups of stirring components are respectively arranged in the corresponding through holes on the adjacent rotating rollers, and the stirring components are used for stirring the liquids in the adjacent through holes.

[0018] Preferably, the maximum distance between the liquid inlets on two adjacent liquid guiding holes in the same group in the vertical direction is h1, and the length of the liquid guiding cavity in the vertical direction is h2, h2>h1, which is used to control the flowing medium in the liquid inlet pipe to enter the multiple liquid guiding holes in sequence through the adjacent liquid guiding cavities.

[0019] Preferably, the stirring assembly comprises:

[0020] A rotating shaft, rotatably disposed in the adjacent rotating roller and located in the corresponding through hole;

[0021] A plurality of stirring rods are staggered and all of the stirring rods are fixed to adjacent rotating shafts;

[0022] The impeller is fixedly connected to the adjacent rotating shaft.

[0023] Preferably, it also includes a cleaning mechanism, which has two symmetrically distributed cleaning mechanisms, which are respectively arranged on adjacent rotating rollers, and the cleaning mechanism is used to clean the oxide layer on the raw material, and the cleaning mechanism includes:

[0024] A first swing frame is rotatably disposed on the adjacent rotating roller, and a torsion spring is installed between the first swing frame and the adjacent first sliding frame;

[0025] A rotating sleeve, rotatably disposed on the first swing frame;

[0026] The second swing frame is rotatably arranged on the rotating sleeve, and a torsion spring is installed between the second swing frame and the first swing frame. A metal brush made of high temperature resistant material is arranged on the second swing frame.

[0027] Preferably, the metal brush on the second swing frame is M-shaped and is located in the middle of the second swing frame, so that the middle of the metal brush on the second swing frame is close to the adjacent rotating sleeve relative to its two ends.

[0028] Preferably, it further comprises an adjusting mechanism, which has two symmetrically distributed ones, and the two adjusting mechanisms are respectively arranged on adjacent liquid inlet pipes, and the adjusting mechanism is used to adjust the flow cross section in the adjacent liquid inlet pipes, and the adjusting mechanism comprises:

[0029] A telescopic push rod, the telescopic push rod is fixedly connected to the adjacent first sliding frame through a bracket;

[0030] A first baffle, fixedly connected to the telescopic end of the adjacent telescopic push rod, and the first baffle penetrates the adjacent liquid inlet pipe and is slidably connected thereto;

[0031] A fixed shell, the fixed shell is fixedly connected to the adjacent first sliding frame through a bracket, a pipeline is installed between the fixed shell and the chamber of the telescopic push rod, the chamber of the telescopic push rod and the pipeline connected thereto are filled with liquid, a medium whose volume changes linearly at different temperatures is arranged in the fixed shell, and is used to reflect the temperature of the flowing medium in the fixed shell by using the volume of the medium in the fixed shell;

[0032] A heat-conducting column, embedded in the fixed shell, and penetrating through the adjacent drain pipe and fixedly connected thereto;

[0033] A sliding plate, slidably disposed in the adjacent fixed shell;

[0034] The flow guide component is arranged in the adjacent liquid inlet pipe and is used to block the flowing medium in the adjacent liquid inlet pipe from entering the adjacent liquid guide cavity.

[0035] Preferably, the flow guide component comprises:

[0036] A second baffle plate is slidably disposed in the adjacent liquid inlet pipe;

[0037] A connecting rod is fixedly connected to the second baffle plate, the first swing frame is provided with a slide groove, and the connecting rod is located in the slide groove of the first swing frame and slides;

[0038] The conduit is fixedly connected and communicated between the adjacent liquid inlet pipe and the adjacent liquid discharge pipe, and the connecting point between the conduit and the liquid inlet pipe is located between the adjacent second baffle plate and the adjacent first baffle plate, and a one-way valve is arranged in the conduit.

[0039] A production process for finished rolled steel strip, based on the above-mentioned finished rolled steel strip production line, comprises the following steps:

[0040] S1: The raw materials after rough rolling are transported through the cleaning unit, and then the processed raw materials move to the finishing unit;

[0041] S2: When the raw material moves close to the two rotating rollers, the two motors work and drive the two rotating rollers to rotate at the same time, and the two rotating rollers rotate to extrude and finish roll the raw material;

[0042] S3: During the finishing rolling of the raw material, the liquid flows through the liquid inlet pipe, the adjacent liquid guide cavity, the adjacent liquid guide hole, the adjacent through hole and the liquid discharge pipe and cools the rotating roller;

[0043] S4: During the liquid flow process, the temperature of the liquid flowing in the discharge pipe is transferred to the fixed shell through the heat-conducting column. The medium in the fixed shell expands due to the high temperature. The expanded medium moves the first baffle through the connected parts, so that the flow cross section of the liquid inlet pipe becomes larger, thereby accelerating the liquid flow rate;

[0044] S5: After the raw material passes through the two rotating rollers, the raw material moves between the two rotating sleeves and the two second swing frames, and the metal brush on the second swing frame cleans the raw material after fine rolling;

[0045] S6: The raw materials after finish rolling are formed into strip steel, which is then conveyed through a cooling unit and then goes through other processing steps;

[0046] S7: Repeat steps S5-S6 for the next rough-rolled raw material during the finish rolling process.

[0047] The beneficial effects of the present invention are as follows: the present invention uses a spring connected to the second sliding frame to make the second sliding frame fit the adjacent rotating roller, clean the oxide layer attached to the rotating roller, and ensure that the thickness of the strip steel after rolling by the rotating roller is uniform and consistent; the rotating roller rotates, so that the liquid guide holes close to the liquid inlet pipe are connected with it in sequence, so that a certain amount of liquid enters the adjacent through hole and absorbs the specified heat on the adjacent rotating roller, that is, the temperature on the rotating roller is controlled to be kept within the specified range, and its service life is extended; the liquid in the adjacent through hole is stirred by the rotation of the rotating shaft and the stirring rod, so that the rotating roller is stable and uniform in the center line direction, that is, the temperature of the raw material in the width direction is indirectly controlled to be uniform; by adjusting the shielding of the flow cross section on the adjacent liquid inlet pipe by the first baffle, the liquid flow rate in the liquid inlet pipe is changed, so that the temperature on the rotating roller is kept within the specified range during the rolling process of raw materials with different temperatures by the device, the applicability of the device is improved, and the service life of the rotating roller is extended; the adjacent liquid inlet pipe is blocked by the second baffle, so that the production line can avoid excessive temperature changes on the rotating roller in the process of continuously rolling raw materials, thereby preventing its service life from being shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0049] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixed frame and the first sliding frame of the present invention;

[0050] Figure 3 It is a schematic diagram of the three-dimensional structure of the motor and the rotating roller of the present invention;

[0051] Figure 4 It is a schematic diagram of the three-dimensional structure of the liquid inlet pipe and the liquid discharge pipe of the present invention;

[0052] Figure 5 A cross-sectional view of the first sliding frame and the rotating roller of the present invention;

[0053] Figure 6 It is a schematic diagram of the structure of the liquid guide hole and the through hole of the present invention;

[0054] Figure 7It is a structural schematic diagram of the liquid guiding cavity and the liquid guiding hole of the present invention;

[0055] Figure 8 It is a schematic diagram of the three-dimensional structure of the rotating shaft and the stirring rod of the present invention;

[0056] Fig. 9 It is a cross-sectional view of the liquid inlet pipe and the liquid discharge pipe of the present invention;

[0057] Fig.10 It is a cross-sectional view of the drain pipe and the fixed shell of the present invention;

[0058] Fig.11 It is a cross-sectional view of the liquid inlet pipe and the conduit of the present invention.

[0059] Markings in the figure are: 1. support, 101. cleaning unit, 102. finishing unit, 103. cooling unit, 11. fixed frame, 12. first sliding frame, 121. motor, 13. rotating roller, 14. fixed rod, 15. second sliding frame, 2. liquid inlet pipe, 21. liquid guide cavity, 22. liquid guide hole, 24. through hole, 25. liquid discharge pipe, 3. rotating shaft, 31. stirring rod, 32. impeller, 4. first swing frame, 41. rotating sleeve, 42. second swing frame, 5. telescopic push rod, 51. first baffle, 52. fixed shell, 53. heat-conducting column, 54. sliding plate, 6. second baffle, 61. connecting rod, 62. conduit. DETAILED DESCRIPTION

[0060] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present invention are not limited.

[0061] Embodiment 1: A finishing strip steel production line, such as Figure 1-Figure 4As shown, it includes: a support 1, which is equipped with a cleaning unit 101 and a cooling unit 103; a finishing unit 102, which is installed on the support 1 and located between the cleaning unit 101 and the cooling unit 103, and the finishing unit 102 is used to roll the raw material to a desired thickness and width; the finishing unit 102 includes: a fixed frame 11, the fixed frame 11 is fixedly connected to the support 1, and the fixed frame 11 is equipped with two symmetrically distributed first sliding frames 12 through a hydraulic system, the first sliding frame 12 is fixedly connected to a motor 121, and the first sliding frame 12 is rotatably provided with a rotating roller 13 fixedly connected to the output shaft of the adjacent motor 121; a fixed rod 14, which has a plurality of fixed rods and is fixedly connected to the adjacent On the first sliding frame 12, the fixed rods 14 located on the same first sliding frame 12 form a group; the second sliding frame 15 has two symmetrically distributed ones, and the two second sliding frames 15 are respectively slidably set on the adjacent group of fixed rods 14, and a tension spring is installed between the second sliding frame 15 and the adjacent group of fixed rods 14. The second sliding frame 15 is provided with a sleeve, and the outer side of the sleeve on the second sliding frame 15 is provided with a plurality of staggered protrusions for forming multi-point contact between it and the adjacent rotating rollers 13; the cooling mechanism has two symmetrically distributed ones, and the two cooling mechanisms are respectively installed on the adjacent first sliding frames 12, and the cooling mechanism is used to uniformly cool the adjacent rotating rollers 13.

[0062] In the above scheme, the cleaning unit 101 is used to clean the oxide layer on the raw material, the cooling unit 103 is used to cool the strip after fine rolling to facilitate the subsequent winding process, and the fine rolling unit 102 is used to fine roll the raw material to a specified thickness and width. A control panel is provided on the fixed frame 11, and the control panel is electrically connected to all electrical components in the present invention, wherein the control panel controls the distance between two adjacent first sliding frames 12 by controlling the hydraulic system, thereby controlling the distance between the two rotating rollers 13, so that the two can roll raw materials of different thicknesses into strips of different thicknesses. The fine rolling device often performs step-by-step extrusion rolling on the raw material through multiple groups of rotating rollers 13, and only three groups are shown in the attached figure. The actual number of groups needs to be set accordingly according to actual processing needs.

[0063] The finishing unit 102 is often provided with vertical rollers for controlling the width of the strip. This mechanism is a prior art and is only shown in the attached figure for illustration. When using the production line, a raw material preparation area, a heating furnace, a rough rolling unit and a coiler are also required. The above steps can be installed accordingly according to the actual needs of the factory. After the production line is assembled and the strip processing operation is carried out, the raw materials are heated by the heating furnace, and then the heated raw materials are processed by the rough rolling mill. The raw materials after rough rolling are conveyed and moved between the two rotating rollers 13. At this time, the two motors 121 both drive the adjacent rotating rollers 13 to rotate. The two rotating rollers 13 rotate to perform finish rolling on the rough rolled raw materials moved between the two. The raw materials after finish rolling become strip steel. The subsequent strip steel passes through the cooling unit 103. The cooling unit 103 works evenly to spray coolant to cool the strip steel, and the subsequent strip steel undergoes other processing operations.

[0064] During the process of the two rotating rollers 13 rotating and extruding the raw materials, the rotating rollers 13 simultaneously rub and drive the sleeves on the two second sliding frames 15 to rotate. After passing through the two rotating rollers 13, an oxide layer is formed on the outer surface of the raw materials, and part of the oxide layer is narrowly adhered to the rotating rollers 13 due to the extrusion. When the part of the oxide layer adhered to the rotating roller 13 rotates to the sleeve on the adjacent second sliding frame 15, the protrusion of the sleeve on the second sliding frame 15 performs multi-point extrusion on the oxide layer adhered to the rotating roller 13, so that the oxide layer adhered to the rotating roller 13 is formed into small pieces, which accelerates the oxide layer to detach from the adjacent rotating roller 13, thereby facilitating the rotating roller 13 to smoothly extrude the subsequent raw materials, thereby improving the flatness of the strip surface after fine rolling.

[0065] like Figure 4-Figure 7 As shown, the cooling mechanism includes: a liquid inlet pipe 2, which is fixedly connected to the adjacent first sliding frame 12, the first sliding frame 12 is provided with two symmetrically distributed liquid guide cavities 21, the liquid inlet pipe 2 is connected to the adjacent liquid guide cavities 21, the rotating roller 13 is provided with a plurality of liquid guide holes 22 and a plurality of through holes 24 distributed circumferentially, the liquid guide holes 22 on the same cross section perpendicular to the center line of the rotating roller 13 are a group, the plurality of liquid guide holes 22 are divided into two groups distributed in a mirror image, the two groups of liquid guide holes 22 are respectively connected and matched with the adjacent liquid guide cavities 21, each group of liquid guide holes 22 has a plurality of circumferentially distributed, and the through holes 24 are respectively connected to the two adjacent guide cavities 21. The liquid holes 22 are connected; the drain pipe 25 is fixedly connected to the adjacent first sliding frame 12, and the drain pipe 25 is connected to the adjacent liquid guiding cavity 21; the stirring assembly has multiple groups distributed circumferentially, and the multiple groups of stirring assemblies are respectively arranged in the corresponding through holes 24 on the adjacent rotating rollers 13, and the stirring assembly is used to stir the liquid in the adjacent through holes 24. The maximum distance between the liquid inlets on two adjacent liquid guiding holes 22 in the same group in the vertical direction is h1, and the length of the liquid guiding cavity 21 in the vertical direction is h2, h2>h1, which is used to control the flowing medium in the liquid inlet pipe 2 to enter the multiple liquid guiding holes 22 in sequence through the adjacent liquid guiding cavity 21.

[0066] In the above scheme, an existing coolant circulation system is installed between the liquid inlet pipe 2 and the liquid discharge pipe 25 on the same first sliding frame 12. The existing coolant circulation system consists of a water pump, a water storage tank and a condenser. The rotating roller 13 consists of two left and right rotating frames and a rotating cylinder (as shown in the attached Figure 6 It can be seen that the structure of the rotating roller 13), and each group of liquid guide holes 22 and through holes 24 on the rotating roller 13 has six circumferentially equidistantly distributed (this number is shown in the accompanying drawings, and its actual number needs to be set accordingly according to the actual size of the rotating roller 13).

[0067] During the above-mentioned finishing rolling process of the raw material, the coolant circulation system works to flow the coolant into the liquid inlet pipe 2 at a specified flow rate, and then the coolant enters the adjacent liquid guide cavity 21, and then the coolant flows into the liquid guide hole 22 connected to the liquid guide cavity 21, and then the coolant flows into the through hole 24. When the liquid guide hole 22 is staggered with the adjacent liquid guide cavity 21, the coolant in the liquid guide hole 22 and the through hole 24 stops flowing, and the flow of the above-mentioned coolant causes the original coolant in the through hole 24 to enter the drain pipe 25 through the adjacent liquid guide hole 22 and the adjacent liquid guide cavity 21, and the subsequent replacement The coolant returns to the coolant circulation system for cooling. After the quantitative coolant enters the corresponding through hole 24, the quantitative coolant absorbs the specified heat on the rotating roller 13, so that the area where the through hole 24 of the rotating roller 13 is located is in the specified temperature range. The above operation is subsequently repeated to alternately cool the rotating roller 13, and the temperature of the rotating roller 13 is controlled to remain in the range, so as to avoid the temperature of the rotating roller 13 cycling back and forth between high temperature and low temperature extremes, causing changes in the microstructure of the material, thereby resulting in a decrease in its mechanical properties and a shortened fatigue life.

[0068] Controlling the temperature of the rotating roller 13 within the specified range can prevent the roller from being severely worn due to excessive temperature and extend its service life.

[0069] like Figure 6 and Figure 8 As shown, the stirring assembly includes: a rotating shaft 3, which is rotatably disposed in an adjacent rotating roller 13 and is located in a corresponding through hole 24; a plurality of stirring rods 31, which are staggered and fixedly connected to the adjacent rotating shaft 3; and an impeller 32, which is fixedly connected to the adjacent rotating shaft 3.

[0070] In the above scheme, when the coolant flows in the through hole 24, the coolant flows and impacts the impeller 32. The impeller 32 is impacted and drives the adjacent rotating shaft 3 and all the stirring rods 31 to rotate. The rotation of all the stirring rods 31 makes the temperature of the coolant in the through hole 24 consistent, so that the coolant can evenly cool the corresponding rotating rollers 13 and keep the temperature of the raw materials after extrusion uniform, which facilitates uniform deformation of the raw materials, thereby improving the quality of the processed strip.

[0071] Embodiment 2: Based on embodiment 1, Figure 3 As shown, it also includes a cleaning mechanism, which has two symmetrically distributed cleaning mechanisms, which are respectively arranged on adjacent rotating rollers 13, and the cleaning mechanism is used to clean the oxide layer on the raw material. The cleaning mechanism includes: a first swing frame 4, which is rotatably arranged on the adjacent rotating roller 13, and a torsion spring is installed between the adjacent first sliding frame 12; a rotating sleeve 41, which is rotatably arranged on the first swing frame 4; a second swing frame 42, which is rotatably arranged on the rotating sleeve 41, and a torsion spring is installed between the second swing frame 42 and the first swing frame 4, and a metal brush made of high temperature resistant material is arranged on the second swing frame 42, the metal brush on the second swing frame 42 is M-shaped, and the metal brush on the second swing frame 42 is located in the middle of the second swing frame 42, so that the middle of the metal brush on the second swing frame 42 is close to the adjacent rotating sleeve 41 relative to its two ends.

[0072] In the above scheme, in the initial state, the torsion spring connected to the first swing frame 4 and the torsion spring connected to the second swing frame 42 are both in a force storage state, and a damping member is arranged between the first swing frame 4 and the adjacent rotating roller 13, and the damping member is composed of a spring and a rubber block in a compressed state. The damping member is installed on the first swing frame 4, and the rubber block in the damping member is in contact with the adjacent rotating roller 13. The damping member is used to increase the friction between the rotating roller 13 and the adjacent first swing frame 4, so that when the rotating roller 13 rotates, the adjacent first swing frame 4 is driven to swing, and the first swing frame 4 swings and twists the connected torsion spring at the same time. As the torsion spring twists, its torsion force gradually increases. When the torsion force of the connected torsion spring on the first swing frame 4 is greater than the friction force provided by the damping member, the first swing frame 4 swings in the opposite direction to reset and hammer the rolled raw material. If the thickness of the final product strip is thin, this structure is not arranged on the last finishing unit 102.

[0073] After the raw material passes through the two rotating rollers 13, the raw material moves between the two rotating sleeves 41. At this time, the raw material squeezes the two adjacent rotating sleeves 41 and moves in opposite directions. The movement of the rotating sleeves 41 causes the adjacent first swing frames 4 to swing. The swinging of the first swing frames 4 twists the connected torsion springs. The movement of the first swing frames 4 simultaneously drives the movement of the second swing frames 42, so that the metal brushes on the two second swing frames 42 clean the upper and lower surfaces of the raw material. During the rotation of the rotating rollers 13, the two rotating sleeves 41 reciprocately strike the raw material under the resistance of the damping member and the torsion change of the torsion spring connected to the first swing frame 4, further accelerating the detachment of the oxide layer on the raw material.

[0074] Embodiment 3: Based on embodiment 2, Figure 4 and Figure 9-11As shown, it also includes an adjustment mechanism, which has two symmetrically distributed ones, and the two adjustment mechanisms are respectively arranged on adjacent liquid inlet pipes 2. The adjustment mechanism is used to adjust the flow cross section in the adjacent liquid inlet pipes 2. The adjustment mechanism includes: a telescopic push rod 5, which is fixedly connected to the adjacent first sliding frame 12 through a bracket; a first baffle 51, which is fixedly connected to the telescopic end of the adjacent telescopic push rod 5, and the first baffle 51 penetrates the adjacent liquid inlet pipe 2 and is slidably connected thereto; a fixed shell 52, which is fixedly connected to the adjacent first sliding frame 12 through a bracket, and the fixed shell 52 and the telescopic push rod 5 are fixedly connected to the adjacent first sliding frame 12. Pipes are installed between the chambers. The chambers of the telescopic push rod 5 and the pipes connected thereto are filled with liquid. A medium whose volume changes linearly at different temperatures is arranged in the fixed shell 52, so as to reflect the temperature of the flowing medium in the fixed shell 52 by utilizing the volume of the medium in the fixed shell 52; a heat-conducting column 53 is embedded in the fixed shell 52, and penetrates the adjacent discharge pipe 25 and is fixedly connected thereto; a sliding plate 54 is slidably arranged in the adjacent fixed shell 52; a flow guide component is arranged in the adjacent liquid inlet pipe 2, so as to block the flowing medium in the adjacent liquid inlet pipe 2 from entering the adjacent liquid guide cavity 21.

[0075] In the above scheme, when the first baffle 51 is at the lower limit position, the first baffle 51 blocks two-thirds of the flow cross section in the adjacent liquid inlet pipe 2, the heat-conducting column 53 is made of heat-conducting material, and the fixed shell 52 and the drain pipe 25 are both made of heat-insulating material.

[0076] When the temperature of the raw material is high, when it passes through the rotating roller 13, the coolant repeats the above operation, wherein the temperature of the coolant flowing out of the discharge pipe 25 is high, and the coolant temperature is transferred to the medium in the adjacent fixed shell 52 through the heat-conducting column 53. The medium in the fixed shell 52 expands due to the heat, and the expanded medium squeezes the sliding plate 54 to move. The sliding plate 54 moves and squeezes the liquid through the adjacent pipeline into the chamber of the telescopic push rod 5, and then the telescopic end of the telescopic push rod 5 drives the first baffle plate 51 to move upward, and the upward movement of the first baffle plate 51 gradually removes the obstruction of the cross section on the adjacent liquid inlet pipe 2, so that the flow cross section in the liquid inlet pipe 2 becomes larger, that is, in the subsequent coolant flow process, the amount of coolant flowing through the through hole 24 becomes more, that is, the heat adsorption effect on the rotating roller 13 is improved, and the temperature on the rotating roller 13 is further maintained in the specified range, thereby extending the service life of the rotating roller 13 (see Appendix). Fig. 9 The position of the first baffle 51 is when the raw material temperature is high), and when the raw material at a low temperature passes through the rotating roller 13, the above-mentioned reverse operation can be performed.

[0077] like Figure 3 , Fig. 9 and Fig.11As shown, the guide assembly includes: a second baffle 6, which is slidably arranged in the adjacent liquid inlet pipe 2; a connecting rod 61, which is fixedly connected to the second baffle 6, and the first swing frame 4 is provided with a slide groove, and the connecting rod 61 is located in the slide groove of the first swing frame 4 and slides; a conduit 62, which is fixedly connected and connected between the adjacent liquid inlet pipe 2 and the adjacent liquid discharge pipe 25, and the connecting point between the conduit 62 and the liquid inlet pipe 2 is located between the adjacent second baffle 6 and the adjacent first baffle 51, and a one-way valve is provided in the conduit 62.

[0078] In the above solution, when the first baffle plate 51 is at the lower limit position, the first baffle plate 51 is used to completely block the flow cross section in the adjacent liquid inlet pipe 2 .

[0079] When the raw material has completely passed through the adjacent rotating sleeves 41, the two motors 121 stop working. At the same time, under the torsion force of the torsion spring connected to the first swing frame 4, the two first swing frames 4 swing toward each other, so that the two rotating sleeves 41 are in contact, wherein the first swing frame 4 swings to make its upper slide groove squeeze the adjacent connecting rod 61 to move, and the movement of the connecting rod 61 drives the adjacent second baffle 6 to move, and the movement of the second baffle 6 completely blocks the adjacent liquid inlet pipe 2. At this time, the coolant flows through the one-way valves on the conduit 62 to the drain pipe 25, so as to prevent the coolant from continuously flowing through the rotating roller 13, causing the temperature on the rotating roller 13 to be too low, so as to facilitate the subsequent fine rolling of the next raw material by the rotating roller 13, thereby extending the service life of the device.

[0080] Embodiment 4: Based on the embodiment 3, Figure 1-Figure 11 As shown, the present invention also provides a production process for finished rolled steel strip, based on the above-mentioned finished rolled steel strip production line, comprising the following steps:

[0081] S1: The raw materials after rough rolling are transported through the cleaning unit 101, and then the processed raw materials move to the finishing unit 102;

[0082] S2: When the raw material moves close to the two rotating rollers 13, the two motors 121 work and drive the two rotating rollers 13 to rotate at the same time, and the two rotating rollers 13 rotate to extrude and finish roll the raw material;

[0083] S3: During the finishing rolling of the raw material, the liquid flows through the liquid inlet pipe 2, the adjacent liquid guide cavity 21, the adjacent liquid guide hole 22, the adjacent through hole 24 and the liquid discharge pipe 25 and cools the rotating roller 13;

[0084] S4: During the liquid flow process, the temperature of the liquid flowing in the discharge pipe 25 is transferred to the fixed shell 52 through the heat-conducting column 53. The medium in the fixed shell 52 expands due to the high temperature. The expanded medium moves the first baffle 51 through the connected parts, so that the flow cross section of the liquid inlet pipe 2 becomes larger, thereby accelerating the liquid flow rate;

[0085] S5: After the raw material passes through the two rotating rollers 13, the raw material moves between the two rotating sleeves 41 and the two second swing frames 42, and the metal brush on the second swing frame 42 cleans the raw material after fine rolling;

[0086] S6: The raw materials after finish rolling are formed into strip steel, which is subsequently conveyed through the cooling unit 103 and then undergoes other processing steps;

[0087] S7: Repeat steps S5-S6 for the next rough-rolled raw material during the finish rolling process.

[0088] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims

1. A finishing strip steel production line, Its characteristics include: A support (1) having a cleaning unit (101) and a cooling unit (103) installed thereon; a finishing rolling unit (102), mounted on the support (1) and located between the cleaning unit (101) and the cooling unit (103), the finishing rolling unit (102) being used to roll the raw material to a required thickness and width; The finishing unit (102) comprises: a fixed frame (11), the fixed frame (11) being fixedly connected to the support (1), the fixed frame (11) being equipped with two symmetrically distributed first sliding frames (12) through a hydraulic system, the first sliding frames (12) being fixedly connected to motors (121), and the first sliding frames (12) being rotatably provided with rotating rollers (13) fixedly connected to output shafts on adjacent motors (121); A plurality of fixing rods (14) are fixedly connected to adjacent first sliding frames (12), and the fixing rods (14) located on the same first sliding frame (12) form a group; The second sliding frame (15) has two symmetrically distributed second sliding frames (15), the two second sliding frames (15) are respectively slidably arranged on an adjacent group of fixed rods (14), a tension spring is installed between the second sliding frame (15) and the adjacent group of fixed rods (14), and the second sliding frame (15) is used to clean impurities on the adjacent rotating rollers (13); a cooling mechanism, comprising two symmetrically distributed cooling mechanisms, the two cooling mechanisms being respectively mounted on adjacent first sliding frames (12), the cooling mechanisms being used to uniformly cool adjacent rotating rollers (13); The cooling mechanism comprises: A liquid inlet pipe (2) is fixedly connected to the adjacent first sliding frame (12), the first sliding frame (12) is provided with two symmetrically distributed liquid guide cavities (21), the liquid inlet pipe (2) is connected to the adjacent liquid guide cavities (21), the rotating roller (13) is provided with a plurality of liquid guide holes (22) and a plurality of circumferentially distributed through holes (24), the liquid guide holes (22) on the same cross section perpendicular to the center line of the rotating roller (13) are a group, the plurality of liquid guide holes (22) are divided into two groups distributed in a mirror image, the two groups of liquid guide holes (22) are respectively connected and matched with the adjacent liquid guide cavities (21), each group of liquid guide holes (22) has a plurality of circumferentially distributed through holes (24), and the two adjacent liquid guide holes (22) are respectively connected and matched; A liquid discharge pipe (25) is fixedly connected to the adjacent first sliding frame (12), and the liquid discharge pipe (25) is communicated with the adjacent liquid guide cavity (21); A stirring assembly having a plurality of groups distributed in a circumferential direction, wherein the plurality of groups of stirring assemblies are respectively arranged in corresponding through holes (24) on adjacent rotating rollers (13), and the stirring assemblies are used to stir liquids in adjacent through holes (24); It also includes two regulating mechanisms which are symmetrically distributed. The two regulating mechanisms are respectively arranged on adjacent liquid inlet pipes (2). The regulating mechanisms are used to adjust the flow cross-section in the adjacent liquid inlet pipes (2). The regulating mechanisms include: A telescopic push rod (5), the telescopic push rod (5) being fixedly connected to the adjacent first sliding frame (12) via a bracket; A first baffle (51) is fixedly connected to the telescopic end of the adjacent telescopic push rod (5), and the first baffle (51) penetrates the adjacent liquid inlet pipe (2) and is slidably connected thereto; a fixed shell (52), the fixed shell (52) being fixedly connected to the adjacent first sliding frame (12) via a bracket, a pipe being installed between the fixed shell (52) and the chamber of the telescopic push rod (5), the chamber of the telescopic push rod (5) and the pipe connected thereto being filled with liquid, a medium whose volume changes linearly at different temperatures being arranged in the fixed shell (52), for reflecting the temperature of the flowing medium in the fixed shell (52) by utilizing the volume of the medium in the fixed shell (52); A heat-conducting column (53) is embedded in the fixed shell (52) and penetrates the adjacent liquid drain pipe (25) and is fixedly connected thereto; A sliding plate (54) slidably disposed in an adjacent fixed shell (52); The flow guide component is arranged in the adjacent liquid inlet pipe (2) and is used to block the flowing medium in the adjacent liquid inlet pipe (2) from entering the adjacent liquid guide cavity (21).

2. A finishing strip steel production line according to claim 1, characterized in that: The second sliding frame (15) is provided with a sleeve, and the outer side of the sleeve on the second sliding frame (15) is provided with a plurality of staggered protrusions for forming multi-point contact between the sleeve and the adjacent rotating roller (13).

3. A finishing strip steel production line according to claim 2, characterized in that: The maximum distance between the liquid inlets of two adjacent liquid guide holes (22) in the same group in the vertical direction is h1, and the length of the liquid guide cavity (21) in the vertical direction is h2, where h2>h1, and is used to control the flowing medium in the liquid inlet pipe (2) to enter the plurality of liquid guide holes (22) in sequence through the adjacent liquid guide cavities (21).

4. A finishing strip steel production line according to claim 3, characterized in that: The stirring assembly comprises: A rotating shaft (3) rotatably disposed in an adjacent rotating roller (13) and located in a corresponding through hole (24); A plurality of stirring rods (31) are arranged in a staggered manner, and each of the plurality of stirring rods (31) is fixedly connected to adjacent rotating shafts (3); The impeller (32) is fixedly connected to the adjacent rotating shaft (3).

5. A finishing strip steel production line according to claim 4, characterized in that: It also includes two cleaning mechanisms that are symmetrically distributed. The two cleaning mechanisms are respectively arranged on adjacent rotating rollers (13). The cleaning mechanisms are used to clean the oxide layer on the raw material. The cleaning mechanisms include: A first swing frame (4) is rotatably disposed on the adjacent rotating roller (13), and a torsion spring is installed between the first swing frame (12) and the adjacent first sliding frame; A rotating sleeve (41) rotatably mounted on the first swing frame (4); The second swing frame (42) is rotatably arranged on the rotating sleeve (41), and a torsion spring is installed between the second swing frame (42) and the first swing frame (4). A metal brush made of a high temperature resistant material is arranged on the second swing frame (42).

6. A finishing strip steel production line according to claim 5, characterized in that: The metal brush on the second swing frame (42) is M-shaped and is located in the middle of the second swing frame (42), so that the middle of the metal brush on the second swing frame (42) is close to the adjacent rotating sleeve (41) relative to its two ends.

7. A finishing strip steel production line according to claim 6, characterized in that: The flow guide assembly comprises: A second baffle (6) is slidably disposed in an adjacent liquid inlet pipe (2); A connecting rod (61) is fixedly connected to the second baffle (6); the first swing frame (4) is provided with a slide groove, and the connecting rod (61) is located in the slide groove of the first swing frame (4) and slides; The conduit (62) is fixedly connected to and communicates between the adjacent liquid inlet pipe (2) and the adjacent liquid discharge pipe (25), and the connecting point between the conduit (62) and the liquid inlet pipe (2) is located between the adjacent second baffle plate (6) and the adjacent first baffle plate (51), and a one-way valve is provided in the conduit (62).

8. A production process for finished rolled steel strip, according to the production line for finished rolled steel strip according to claim 7, characterized in that: The steps include: S1: After rough rolling, the raw materials are transported to a cleaning unit (101), and then the processed raw materials are moved to a finishing unit (102); S2: When the raw material moves close to the two rotating rollers (13), the two motors (121) work to drive the two rotating rollers (13) to rotate at the same time, and the two rotating rollers (13) rotate to extrude and finish roll the raw material; S3: during the finishing rolling of the raw material, the liquid flows through the liquid inlet pipe (2), the adjacent liquid guide cavity (21), the adjacent liquid guide hole (22), the adjacent through hole (24) and the liquid discharge pipe (25) and cools the rotating roller (13); S4: During the flow of the liquid, the temperature of the liquid flowing in the discharge pipe (25) is transferred to the fixed shell (52) through the heat-conducting column (53). The medium in the fixed shell (52) expands due to the high temperature. The expanded medium moves the first baffle (51) through the connected parts, thereby increasing the flow cross section of the liquid inlet pipe (2), thereby accelerating the flow rate of the liquid; S5: After the raw material passes through the two rotating rollers (13), the raw material moves between the two rotating sleeves (41) and the two second swing frames (42), and the metal brush on the second swing frame (42) cleans the raw material after fine rolling; S6: The raw materials after finish rolling are formed into strip steel, which is then transported through a cooling unit (103) and then undergoes other processing steps; S7: Repeat steps S5-S6 for the next rough-rolled raw material during the finish rolling process.

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