Anti-warping device for a rolling mill

Abstract

This utility model discloses an anti-warping device for a rolling mill, relating to the field of rolling mills. The anti-warping device includes a frame, with symmetrical support seats fixed on the outer wall of one side of the frame's discharge end. A pressure roller is fixed between the two support seats, and the pressure roller is located below the steel coil conveying path at the frame's discharge end. This anti-warping device targets the common upward warping of steel coils. When the pressure roller rotates, it causes the first or last end of the steel coil to roll downwards and flatten on the surface of the pressure roller. Through repeated reverse forces, the warping stress is offset, allowing the warped portion to gradually flatten during rolling. Compared to traditional flat plate pressing structures, this flattening is more precise and efficient, eliminating the need for prolonged clamping and shaping, effectively solving the problems of poor flattening effect and low efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rolling mills, and in particular to an anti-warping device for rolling mills. Background Technology

[0002] During the rolling process of steel coils, the coils are unwound on the unwinding equipment and fed between the two rolls of the rolling mill to be flattened, resulting in steel plates. However, in actual production, traditional rolling mills have always had the problem of not being able to completely flatten the beginning and end of the steel coil. The beginning and end portions of the coil often exhibit warping. Existing technology, which uses two split flat plates at the exit and entrance of the rolling mill to press the steel coil together, often does not achieve optimal results. Furthermore, the plates need to be held together for a long time after clamping to achieve the desired shape, resulting in low efficiency. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide an anti-warping device for rolling mills, which solves the problems of poor flattening effect and low flattening efficiency in existing flat plate pressing structures for solving the warping of the beginning and end of steel coils.

[0004] To address the problems in the existing technology, the technical solution of this utility model is as follows:

[0005] An anti-warping device for a rolling mill includes a frame. A pressure roller is fixed on the outer wall of the discharge end of the frame. The pressure roller is located below the steel coil conveying path at the discharge end of the frame. A flipping frame is also rotatably installed on the outer wall of the frame near the discharge end. A bending roller is provided inside the flipping frame and is located directly above the pressure roller. The two clamp the steel coil from the top and bottom. The flipping frame is driven to rotate by a rotating device, causing the bending roller to flip on the pressure roller towards the front or rear of the steel coil conveying path, thereby flattening the warped steel coil.

[0006] Optionally, the frame has symmetrical support seats fixed on the outer wall near the discharge end, and the two ends of the pressure roller are fixed to the two support seats respectively. Multiple weight reduction grooves are provided on the pressure roller at equal angles around its axis, and the weight reduction grooves run through the entire pressure roller in the length direction of the pressure roller.

[0007] Optionally, the flipping frame is arranged in an n-shape, and when the flipping frame is in a longitudinal state, its opening faces vertically downwards, and the two ends of the opening of the flipping frame are rotatably connected to the two ends of the pressure roller through bearings.

[0008] Optionally, the rotating device includes a worm gear fixedly installed at one end of the flipping frame. The worm gear is coaxially arranged with the pressure roller. A worm is rotatably connected to the outer wall of the support seat near the worm gear via a bearing. The worm meshes with the worm gear. A motor is also fixed on the outer wall of the support seat near the worm gear. The lower end of the worm is fixed to the output end of the motor.

[0009] Optionally, sleeves are fixed on opposite sides of the open end of the flipping frame, the sleeves are fitted onto the ends of the pressure rollers, and the worm gear is fixed on the outer wall of one sleeve at one end of the flipping frame.

[0010] Optionally, both ends of the flipping frame are provided with longitudinally arranged sliding grooves, and the inner walls of the two sliding grooves are slidably connected to lifting frames. The lifting frames are located above the outer side of the pressing roller, and the pressing roller is rotatably connected to the inner wall of the lifting frame through bearings. An electric push rod is fixed in the middle of the top surface of the flipping frame, and the extended end of the electric push rod passes through the outer wall of the flipping frame and is fixed to the outer wall of the lifting frame.

[0011] Compared with the prior art, the advantages of this utility model are as follows:

[0012] This invention uses a pressure roller and a reversible bending roller to clamp the steel coil from top to bottom. A worm gear drives the reversing frame, causing the bending roller to flip to the front or back of the conveying path. To address the common upward warping of steel coils, the bending roller flips and causes the first or last end of the steel coil to roll downwards on the surface of the pressure roller, flattening it. Through repeated reverse forces, the warping stress is offset, and the warped part is gradually flattened during rolling. Compared with the traditional flat plate pressing structure, the flattening is more precise and efficient, and there is no need for long-term clamping and shaping, effectively solving the problems of poor flattening effect and low efficiency.

[0013] The medium-pressure curved roller of this invention slides in the groove of the flipping frame through the lifting frame, and can be flexibly adjusted up and down in conjunction with the electric push rod. It can adjust the pressing gap according to steel coils of different thicknesses, thereby improving the applicability of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram showing the positions of the lifting frame and the flipping frame of this utility model.

[0016] Figure 3 This is a schematic diagram showing the positions of the sleeve and the pressure roller of this utility model.

[0017] Figure 4 This is a schematic diagram showing the positions of the worm gear and worm of this utility model.

[0018] Reference numerals in the attached diagram: 1. Frame; 2. Support base; 3. Pressure roller; 4. Tilting frame; 5. Sleeve; 6. Lifting frame; 7. Pressing roller; 8. Electric push rod; 9. Worm gear; 10. Worm; 11. Motor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 4 This embodiment provides an anti-warping device for a rolling mill, including a frame 1. Support seats 2 are symmetrically fixed on the outer wall of the discharge end of the frame 1. A pressure roller 3 is fixed between the two support seats 2. The pressure roller 3 is located below the steel coil conveying path at the discharge end of the frame 1. The steel coil conveying path is the dotted line indicated by the X in the figure. After the steel coil is unwound, it enters the two rolling mill components of the frame 1 for flattening, and then is conveyed and discharged along the steel coil conveying path.

[0021] Multiple weight-reducing grooves are spaced at equal angles around the axis of the pressure roller 3. The weight-reducing grooves run through the entire pressure roller 3 along its length. The weight-reducing grooves effectively reduce the weight of the pressure roller 3 while ensuring its structural strength, thus reducing the energy consumption during operation.

[0022] A flipping frame 4 is also provided on the outer wall of the frame 1 near the discharge end. The flipping frame 4 is n-shaped and its opening faces vertically downward when it is in the longitudinal state. The two ends of the opening of the flipping frame 4 are rotatably connected to the two ends of the pressure roller 3 through bearings. A sleeve 5 is fixed on the opposite side of the two ends of the opening of the flipping frame 4. The sleeve 5 is sleeved on the end of the pressure roller 3. Through the cooperation of the sleeve 5 and the bearing, the flipping frame 4 can rotate flexibly around the pressure roller 3. The sleeve 5 effectively improves the stability of the flipping frame 4.

[0023] Both ends of the flipping frame 4 are provided with longitudinally arranged sliding grooves. The inner walls of the two sliding grooves are slidably connected to the lifting frame 6. The inner wall of the open end of the lifting frame 6 is rotatably connected to the pressure roller 7 through the bearing. An electric push rod 8 is fixed in the middle of the top surface of the flipping frame 4. The extended end of the electric push rod 8 passes through the outer wall of the flipping frame 4 and the lifting frame 6 and is fixed. The pressure roller 7 is located directly above the pressure roller 3. The two clamp the steel coil from the upper and lower sides. When the electric push rod 8 is activated, its extended end drives the lifting frame 6 to slide up and down in the sliding groove, thereby driving the pressure roller 7 to move up and down, realizing the adjustment of the distance between the pressure roller 7 and the pressure roller 3 to adapt to steel coils of different thicknesses.

[0024] Before the production line is put into operation, the electric push rod 8 is extended or retracted according to the thickness of the steel coil to be processed, and the distance between the pressure roller 7 and the bearing roller 3 is adjusted accordingly.

[0025] After adjustment, the first end of the steel coil is flattened by the frame 1 and enters between the pressure roller 7 and the bearing roller 3. After the first end of the steel coil passes the bearing roller 3 for a certain distance, the driving flipping frame 4 flips to the front of the steel coil conveying path, so that the pressure roller 7 can press the first end of the steel coil, so that the upward curved part of the first end is pressed in the opposite direction and wrapped on the outer wall of the bearing roller 3. The flipping frame 4 is repeatedly flipped back and forth, so that the pressure roller 7 repeatedly presses the first end of the steel coil.

[0026] By repeatedly applying opposing forces to counteract the warping stress, the warped area is gradually flattened during rolling. Compared with traditional flat plate pressing structures, the flattening is more precise and efficient, and there is no need for long-term clamping and shaping, effectively solving the problems of poor flattening effect and low efficiency.

[0027] After the steel coil is pressed and the end of the steel coil passes over the frame 1 and gradually reaches the bending roller 7, the end of the steel coil is retained and remains between the bending roller 7 and the frame 1. Then, the flipping frame 4 is driven to flip to the rear side of the steel coil conveying path, and the upward curvature of the tail end of the steel coil is repeatedly flipped and flattened.

[0028] For the rotation of the flipping frame 4, a worm gear 9 is fixed to the outer wall of a sleeve 5 at one end of the flipping frame 4. The worm gear 9, sleeve 5, and pressure roller 3 are coaxially arranged. A worm 10 is rotatably connected to the outer wall of the support base 2 near the worm gear 9 via a bearing. The worm 10 meshes with the worm gear 9. A motor 11 is also fixed to the outer wall of the support base 2 near the worm gear 9. The lower end of the worm 10 is fixed to the output end of the motor 11. Thus, by starting the motor 11, the motor 11 drives the worm 10 to rotate, and the worm 10 drives the worm gear 9 to rotate, thereby causing the flipping frame 4 to rotate around the pressure roller 3, realizing the flipping of the pressure roller 7.

[0029] Working principle: When the steel coil is fed out from the discharge end of the frame 1, if the beginning or end of the steel coil warps upward, the electric push rod 8 is activated according to the thickness of the steel coil to adjust the distance between the pressure roller 7 and the bearing roller 3 so that the two can clamp the steel coil from top to bottom. Then the motor 11 is activated, and the motor 11 drives the flipping frame 4 to rotate through the transmission of the worm gear 10 and the worm wheel 9, so that the pressure roller 7 flips to the front or back side of the steel coil conveying path. When the pressure roller 7 flips, it causes the beginning or end of the steel coil to roll downward on the surface of the bearing roller 3 and flatten it. Through repeated reverse forces, the warping stress is offset, and the warped part is gradually flattened during rolling.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-warping device for a rolling mill, comprising a frame (1), characterized in that, A pressure roller (3) is fixed on the outer wall of the discharge end of the frame (1). The pressure roller (3) is located below the steel coil conveying path at the discharge end of the frame (1). A flipping frame (4) is also rotatably installed on the outer wall of the frame (1) near the discharge end. A bending roller (7) is provided inside the flipping frame (4). The bending roller (7) is located directly above the pressure roller (3). The two sandwich the steel coil from the upper and lower sides. The flipping frame (4) is driven to rotate by a rotating device, so that the bending roller (7) flips on the pressure roller (3) to the front or back side of the steel coil conveying path, and performs the work of flattening the steel coil by warping.

2. The anti-warping device for a rolling mill according to claim 1, characterized in that, The frame (1) has symmetrical support seats (2) fixed on the outer wall near the discharge end, and the two ends of the pressure roller (3) are fixed to the two support seats (2) respectively.

3. The anti-warping device for a rolling mill according to claim 1, characterized in that, Multiple weight-reducing grooves are provided on the pressure roller (3) at equal angles around its axis, and the weight-reducing grooves penetrate the entire pressure roller (3) along its length.

4. The anti-warping device for a rolling mill according to claim 2, characterized in that, The flipping frame (4) is arranged in an n-shape, and when the flipping frame (4) is in a longitudinal state, its opening is vertically downward. The two ends of the opening of the flipping frame (4) are rotatably connected to the two ends of the pressure roller (3) through bearings.

5. The anti-warping device for a rolling mill according to claim 4, characterized in that, The rotating device includes a worm gear (9) fixedly installed at one end of the flipping frame (4). The worm gear (9) is coaxially arranged with the pressure roller (3). A worm (10) is rotatably connected to the outer wall of the support seat (2) near the worm gear (9) via a bearing. The worm (10) meshes with the worm gear (9). A motor (11) is also fixed on the outer wall of the support seat (2) near the worm gear (9). The lower end of the worm (10) is fixed to the output end of the motor (11).

6. The anti-warping device for a rolling mill according to claim 5, characterized in that, Both ends of the flip frame (4) are fixed with sleeves (5) on opposite sides of the opening. The sleeves (5) are fitted onto the end of the pressure roller (3), and the worm gear (9) is fixed on the outer wall of one sleeve (5) at one end of the flip frame (4).

7. The anti-warping device for a rolling mill according to claim 1, characterized in that, Both ends of the flipping frame (4) are provided with longitudinally arranged sliding grooves. The inner walls of the two sliding grooves are slidably connected to the lifting frame (6). The lifting frame (6) is located on the outer side above the pressing roller (7). The pressing roller (7) is rotatably connected to the inner wall of the lifting frame (6) through the bearing. An electric push rod (8) is fixed in the middle of the top surface of the flipping frame (4). The protruding end of the electric push rod (8) passes through the outer wall of the flipping frame (4) and the lifting frame (6) and is fixed.

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