A cold-rolled steel strip slitting apparatus

Abstract

The present application relates to the technical field of metal processing, in particular to a cold-rolled steel strip slitting device, comprising an unwinding device, a slitting and polishing device and a winding device, the unwinding device is used for conveying the cold-rolled steel plate to the slitting and polishing device, the slitting and polishing device is used for slitting the cold-rolled steel plate into cold-rolled steel strips and polishing the cold-rolled steel strips, and the winding device is used for winding the polished cold-rolled steel strips; the slitting and polishing device comprises a rack and a slitting part and a polishing guide arranged on the rack, the slitting part is used for slitting the cold-rolled steel plate, the polishing guide comprises two rotatable polishing rollers arranged in an upper and lower staggered manner, the polishing rollers are provided with guide wheels, the guide wheels on the two polishing rollers are arranged in a staggered manner, and the end faces of the guide wheels are provided with polishing structures. The present application does not need to make the steel strip twisted, and only through the simple upper and lower staggered arrangement, the edge of the steel strip can be exposed, so that the cold-rolled steel strip is less likely to be damaged by stretching in the processing process, thereby effectively improving the performance and quality of the cold-rolled steel strip.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, specifically to a cold-rolled steel strip slitting device. Background Technology

[0002] Steel strip is mainly obtained by slitting cold-rolled steel sheets using a slitting machine. For example, Chinese invention patent application CN202510323737.5 discloses a slitting device for cold-rolled thin sheets, which can twist the slit steel strip, changing it from a horizontal to an inclined state, exposing both edges of the steel strip, thus facilitating the effective removal of burrs on the edges. However, in this technology, because the steel strip is twisted to expose the edges that need grinding, the steel strip is subjected to force on one side during the twisting process, which easily leads to tensile damage and deformation, resulting in a decrease in the quality of the steel strip. To address the above problems, this invention proposes a cold-rolled steel strip slitting device. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cold-rolled steel strip slitting device that exposes the edges of the steel strip in a non-twisting manner, which facilitates grinding and does not damage the steel strip.

[0004] This invention is achieved through the following technical solution: A cold-rolled steel strip slitting device includes an uncoiling device, a slitting and grinding device, and a rewinding device. The uncoiling device is used to feed cold-rolled steel sheets to the slitting and grinding device. The slitting and grinding device is used to slit the cold-rolled steel sheets into cold-rolled steel strips and grind the cold-rolled steel strips. The rewinding device is used to rewind the ground cold-rolled steel strips. The slitting and grinding device includes a frame and a slitting component and a grinding guide component mounted on the frame. The slitting component is used to slit the cold-rolled steel sheets. The grinding guide component includes two rotatable grinding rollers arranged staggered vertically. Each grinding roller has a guide wheel, and the guide wheels on the two grinding rollers are staggered. The end face of each guide wheel is provided with a grinding structure.

[0005] Optionally, the grinding structure is radially extendable along the guide wheel.

[0006] Optionally, the polishing structure includes a polishing belt, an elastic membrane, and a magnet, with the edge of the elastic membrane fixed to the guide wheel, and the polishing belt and the magnet fixed in the middle of the elastic membrane.

[0007] Optionally, a mounting groove is recessed on the end face of the guide wheel, and the grinding structure is installed in the mounting groove.

[0008] Optionally, both the abrasive belt and the elastic membrane are annular, and a plurality of magnets are distributed at intervals along the circumference of the abrasive belt.

[0009] Optionally, the slitting and grinding device further includes two sets of positioning wheels, which are symmetrically arranged on the front and rear sides of the grinding guide.

[0010] Optionally, the slitting component includes a slitting shaft rotatably connected to the frame and a plurality of annular slitting blades fixedly arranged along the axial direction of the slitting shaft, wherein the edges of the slitting blades are cutting edges.

[0011] Optionally, the winding device includes a winding frame, a winding shaft mounted on the winding frame, and a plurality of winding wheels rotatably mounted on the winding shaft, each winding wheel being rotatable independently.

[0012] Optionally, the take-up reel is driven to rotate by a drive device, which includes a drive wheel, a pressure sensor, and a linear actuator. The drive wheel abuts against the surface of the take-up reel and is driven to rotate by a motor. The linear actuator is used to drive the drive wheel to move radially along the take-up reel. The pressure sensor is installed between the support of the drive wheel and the output end of the linear actuator.

[0013] Optionally, the linear actuator is a pneumatic cylinder, a hydraulic cylinder, or an electric actuator.

[0014] Compared with the prior art, the present invention provides a cold-rolled steel strip slitting device, which has the following beneficial effects: The cold-rolled steel strip produced by this invention is guided and conveyed by multiple guide wheels. During this process, adjacent cold-rolled steel strips are staggered vertically by a certain height by the guide wheels, exposing the side of each steel strip. The exposed side of the cold-rolled steel strip passes precisely through the end face of the guide wheel used to guide adjacent steel strips. Since a grinding structure is provided on this end face, when the side of the steel strip contacts it and moves relative to it, the burrs on the side of the steel strip can be ground and polished. Compared with the prior art, which twists the steel strip itself to make its side face the grinding station, this invention does not require the steel strip to be twisted. The steel strip edge is exposed simply by vertical staggering, thus making it less likely to cause tensile damage to the cold-rolled steel strip during processing, thereby effectively improving the performance and quality of the cold-rolled steel strip. This invention improves the grinding effect by making the grinding structure retractable. When the grinding structure passes over the cold-rolled steel strip, it extends and presses firmly against the side of the strip with a predetermined pressure. When the grinding structure is at the overlapping position of adjacent guide wheels, it retracts to avoid interfering with the rotation of the guide wheels. The grinding structure of the present invention includes a grinding belt, an elastic membrane, and a magnet. The edge of the elastic membrane is fixed on a guide wheel, and the grinding belt and the magnet are fixed in the middle of the elastic membrane. With this grinding structure, when the cold-rolled steel strip approaches the magnet of the grinding structure, under the influence of the magnetic force, the magnet overcomes the elastic force of the elastic membrane and drives the grinding belt to extend towards the cold-rolled steel strip until the grinding belt is close to the side of the cold-rolled steel strip, thereby grinding the side of the cold-rolled steel strip. When the cold-rolled steel strip moves away from the magnet of the grinding structure, the grinding belt can retract under the rebound force of the elastic membrane. This invention involves fixing multiple cold-rolled steel strips, each cut from a cold-rolled steel sheet, onto multiple independently rotating winding wheels. The independent rotation of each winding wheel allows for the winding of the multiple cold-rolled steel strips separately. During the winding process, even if the diameters of the different steel coils differ, each cold-rolled steel strip remains taut, providing favorable conditions for the subsequent grinding of the cold-rolled steel strips. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a cold-rolled steel strip slitting equipment; Figure 2 This is a schematic diagram of the slitting and polishing device; Figure 3 A schematic diagram of the slitting and grinding device after the frame has been removed; Figure 4 A cross-sectional structural diagram of the grinding guide component; Figure 5 A schematic diagram of the side structure for grinding the guide component; Figure 6 This is a schematic diagram of the winding reel and drive unit.

[0016] In the diagram: 100, unwinding device; 110, unwinding frame; 120, unwinding shaft; 200, slitting and grinding device; 210, frame; 220, slitting piece; 221, slitting shaft; 222, slitting blade; 230, grinding guide; 231, grinding roller; 232, guide wheel; 233, grinding structure; 2330, grinding belt; 2331, elastic membrane; 2332, magnet; 2333, mounting groove; 240, front positioning wheel; 241, rear positioning wheel; 300, winding device; 310, winding frame; 320, winding shaft; 330, winding wheel; 340, drive device; 341, drive wheel; 342, pressure sensor; 343, linear actuator; 400, cold-rolled steel plate; 410, cold-rolled steel strip. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] As described in the background section, Chinese invention patent application number CN202510323737.5 discloses a slitting device for cold-rolled thin sheets. Although it can twist the slit steel strip, changing it from a horizontal to an inclined state and exposing both edges to facilitate effective burr removal, the method of exposing the edges requiring grinding by twisting results in unilateral stress on the strip, making it prone to tearing and deformation, thus degrading the quality of the steel strip.

[0019] To resolve the above technical issues, please refer to Figures 1 to 6 According to an embodiment of the present invention, a cold-rolled steel strip slitting device is provided, mainly including an uncoiling device 100, a slitting and grinding device 200, and a rewinding device 300. The uncoiling device 100 is used to feed cold-rolled steel sheets 400 to the slitting and grinding device 200. Specifically, as shown in the figure... Figure 1 As shown, the unwinding device 100 mainly consists of an unwinding frame 110 and an unwinding shaft 120. The unwinding shaft 120 is rotatably connected to the unwinding frame 110 via bearings. The cold-rolled steel sheet 400 is wound on the unwinding shaft 120. By rotating the unwinding shaft 120, the cold-rolled steel sheet 400 can be fed to the slitting and grinding device 200. The slitting and grinding device 200 is used to slit the cold-rolled steel sheet 400 into cold-rolled steel strips 410 and grind the cold-rolled steel strips 410. The winding device 300 is used to wind up the ground cold-rolled steel strips 410. Figure 4As shown, the slitting and grinding device 200 mainly includes a frame 210 and a slitting component 220 and a grinding guide component 230 mounted on the frame 210. The slitting component 220 is used to slitting cold-rolled steel sheet 400. The grinding guide component 230 includes two rotatable grinding rollers 231 arranged staggered vertically. Each grinding roller 231 has a guide wheel 232. The guide wheels 232 on the two grinding rollers 231 are arranged alternately, and a grinding structure 233 is provided on the end face of the guide wheel 232. In this embodiment, the slitting component 220 can cut the continuously rolled cold-rolled steel sheet 400 into several independent cold-rolled steel strips 410 according to a preset width. These steel strips are guided and conveyed by multiple guide wheels 232. During this process, adjacent cold-rolled steel strips 410 are staggered by a certain height in the vertical direction by the guide wheels 232, so that the side of each steel strip is exposed. The exposed side of the cold-rolled steel strip 410 passes exactly through the end face of the guide wheel 232 used to guide the adjacent steel strips. Since a grinding structure 233 is provided on this end face, when the side of the steel strip contacts it and moves relative to it, the burrs on the side of the steel strip can be ground and polished. Compared to the method proposed in patent application CN202510323737.5, which involves twisting the steel strip itself to make its side face the grinding station, the cold-rolled steel strip 410 produced using the above-mentioned scheme does not require twisting of the steel strip. The edge of the steel strip can be exposed simply by staggering the upper and lower parts. Therefore, it is less likely to cause tensile damage to the cold-rolled steel strip 410 during processing, thereby effectively improving the performance and quality of the cold-rolled steel strip 410.

[0020] In some embodiments, the grinding structure 233 is radially extendable along the guide wheel 232. By making the grinding structure 233 extendable and presses against the side of the cold-rolled steel strip 410 with a predetermined pressure as the grinding structure 233 passes over it, the grinding effect can be improved. When the grinding structure 233 is at the overlapping position of adjacent guide wheels 232, it is retracted to avoid interference with the rotation of the guide wheel 232.

[0021] To achieve radial extension and retraction of the grinding structure 233 along the guide wheel 232. For example... Figure 4 As shown, in some embodiments, the polishing structure 233 includes a polishing belt 2330, an elastic membrane 2331, and a magnet 2332. The edge of the elastic membrane 2331 is fixed to the guide wheel 232, and the polishing belt 2330 and the magnet 2332 are fixed in the middle of the elastic membrane 2331. Specifically, as shown... Figure 5As shown, both the abrasive belt 2330 and the elastic membrane 2331 are annular, and several magnets 2332 are spaced apart circumferentially along the abrasive belt 2330. Using this abrasive structure 233, when the cold-rolled steel strip 410 approaches the magnets 2332 of the abrasive structure 233, the magnets 2332, influenced by the magnetic force, overcome the elastic force of the elastic membrane 2331, causing the abrasive belt 2330 to extend closer to the cold-rolled steel strip 410 until it adheres tightly to the side of the cold-rolled steel strip 410, thus abrading the side of the cold-rolled steel strip 410. When the cold-rolled steel strip 410 moves away from the magnets 2332 of the abrasive structure 233, the abrasive belt 2330 can retract under the rebound force of the elastic membrane 2331.

[0022] like Figure 4 As shown, in some embodiments, a mounting groove 2333 is recessed on the end face of the guide wheel 232, and the grinding structure 233 is installed in the mounting groove 2333. By providing the mounting groove 2333 for installing the grinding structure 233, adjacent guide wheels 232 can be installed close together. Since the distance between adjacent cold-rolled steel strips 410 is also small, this increases the contact area between the guide wheel 232 and the cold-rolled steel strip 410, avoiding deformation of the cold-rolled steel strip 410 due to insufficient contact area.

[0023] like Figures 1 to 3 As shown, in some embodiments, the slitting and grinding device 200 further includes two sets of positioning wheels, which are symmetrically arranged on the front and rear sides of the grinding guide 230. The two sets of positioning wheels include two front positioning wheels 240 and two rear positioning wheels 241. The two front positioning wheels are used to fix the height of the cold-rolled steel strip 410 when it is output from the slitting piece 220, thereby ensuring the relative position of the cold-rolled steel strip 410 and the slitting piece 220 and improving the slitting effect. The two rear positioning wheels 241 ensure that multiple cold-rolled steel strips 410 are output neatly from the slitting and grinding device 200, facilitating subsequent winding operations.

[0024] like Figure 2 and Figure 3 As shown, in some embodiments, the slitting component 220 includes a slitting shaft 221 rotatably connected to the frame 210 and a plurality of annular slitting blades 222 fixedly arranged along the axial direction of the slitting shaft 221, the edges of the slitting blades 222 being cutting edges. When the cold-rolled steel sheet 400 passes through the slitting shaft 221, it can be slid into multiple cold-rolled steel strips 410 by the multiple slitting blades 222. The distance between the multiple slitting blades 222 can be set according to actual needs.

[0025] In the above embodiment, since the cold-rolled steel sheet 400 is cut into multiple cold-rolled steel strips 410, the diameters of the various steel strips 410 may be different during the winding process. If all the cold-rolled steel strips 410 are wound onto the same winding shaft 320, some steel strips will inevitably not be tightened, thus affecting the grinding effect of the preceding cold-rolled steel strips 410. To solve this problem, as... Figure 1 As shown, in some embodiments, the winding device 300 includes a winding frame 310, a winding shaft 320 mounted on the winding frame 310, and a plurality of winding wheels 330 rotatably mounted on the winding shaft 320, each winding wheel 330 being independently rotatable. Multiple cold-rolled steel strips 410, cut from the cold-rolled steel sheet 400, are respectively fixed on the plurality of winding wheels 330. By independently rotating each winding wheel 330, the multiple cold-rolled steel strips 410 can be wound up separately. During the winding process, even if different steel coils have different diameters, each cold-rolled steel strip 410 can remain taut, providing favorable conditions for the subsequent grinding of the cold-rolled steel strips 410.

[0026] like Figure 6 As shown, in some embodiments, the take-up reel 330 is driven to rotate by a drive device 340. The drive device 340 includes a drive wheel 341, a pressure sensor 342, and a linear actuator 343. The drive wheel 341 abuts against the surface of the take-up reel 330 and is driven to rotate by a motor. The linear actuator 343 drives the drive wheel 341 to move radially along the take-up reel 330. The pressure sensor 342 is mounted between the bracket of the drive wheel 341 and the output end of the linear actuator 343. The linear actuator 343 can be a structure or device with telescopic function, such as a cylinder, hydraulic cylinder, or electric actuator. To reduce or avoid slippage and improve driving stability, the drive wheel 341 can be a rubber wheel. The drive device 340 with the above structure drives the take-up wheel 330 to rotate, and the motor drives the drive wheel 341 to rotate. The drive wheel 341 drives the take-up wheel 330 to rotate by friction. As the cold-rolled steel strip 410 is wound around the outside of the drive wheel 341, the drive wheel 341 drives the steel coil and the take-up wheel 330 to rotate by friction with the steel coil. When the diameter of the steel coil outside the drive wheel 341 becomes larger and larger, the extrusion pressure between the drive wheel 341 and the steel coil also increases. The pressure sensor 342 is used to monitor the extrusion pressure and controls the linear drive 343 to operate through the controller. In this way, the extrusion pressure between the drive wheel 341 and the steel coil can be kept constant, avoiding slippage or overload caused by diameter changes, and improving the reliability of the winding process.

[0027] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cold-rolled steel strip slitting device, comprising an unwinding device (100), a slitting and grinding device (200), and a rewinding device (300), wherein the unwinding device (100) is used to feed a cold-rolled steel sheet (400) to the slitting and grinding device (200), the slitting and grinding device (200) is used to slit the cold-rolled steel sheet (400) into cold-rolled steel strips (410) and grind the cold-rolled steel strips (410), and the rewinding device (300) is used to rewind the ground cold-rolled steel strips (410); the slitting and grinding device (200) comprises a frame (210) and a slitting component (220) and a grinding guide component (230) disposed on the frame (210), wherein the slitting component (220) is used to slit the cold-rolled steel sheet (400), characterized in that: The polishing guide (230) includes two rotatable polishing rollers (231) arranged staggered up and down. Each polishing roller (231) has a guide wheel (232). The guide wheels (232) on the two polishing rollers (231) are arranged alternately. A polishing structure (233) is provided on the end face of the guide wheel (232).

2. The cold-rolled steel strip slitting equipment according to claim 1, characterized in that: The grinding structure (233) is radially extendable along the guide wheel (232).

3. The cold-rolled steel strip slitting equipment according to claim 2, characterized in that: The grinding structure (233) includes a grinding belt (2330), an elastic membrane (2331) and a magnet (2332). The edge of the elastic membrane (2331) is fixed on the guide wheel (232), and the grinding belt (2330) and the magnet (2332) are fixed in the middle position of the elastic membrane (2331).

4. The cold-rolled steel strip slitting equipment according to claim 3, characterized in that: The guide wheel (232) has an indented mounting groove (2333) on its end face, and the grinding structure (233) is installed in the mounting groove (2333).

5. The cold-rolled steel strip slitting equipment according to claim 3, characterized in that: Both the abrasive belt (2330) and the elastic membrane (2331) are annular, and a number of magnets (2332) are distributed circumferentially along the abrasive belt (2330).

6. The cold-rolled steel strip slitting equipment according to claim 1, characterized in that: The slitting and polishing device (200) also includes two sets of positioning wheels, which are symmetrically arranged on the front and rear sides of the polishing guide (230).

7. The cold-rolled steel strip slitting equipment according to claim 1, characterized in that: The slitting component (220) includes a slitting shaft (221) rotatably connected to the frame (210) and a plurality of annular slitting blades (222) fixedly arranged along the axial direction of the slitting shaft (221), the edges of the slitting blades (222) being cutting edges.

8. The cold-rolled steel strip slitting equipment according to claim 1, characterized in that: The winding device (300) includes a winding frame (310), a winding shaft (320) mounted on the winding frame (310), and a plurality of winding wheels (330) rotatably mounted on the winding shaft (320), each winding wheel (330) being rotatable independently.

9. The cold-rolled steel strip slitting equipment according to claim 8, characterized in that: The take-up reel (330) is driven to rotate by a drive device (340), which includes a drive wheel (341), a pressure sensor (342), and a linear actuator (343). The drive wheel (341) abuts against the wheel surface of the take-up reel (330) and is driven to rotate by a motor. The linear actuator (343) is used to drive the drive wheel (341) to move radially along the take-up reel (330). The pressure sensor (342) is installed between the bracket of the drive wheel (341) and the output end of the linear actuator (343).

10. The cold-rolled steel strip slitting equipment according to claim 9, characterized in that: The linear actuator (343) is a cylinder, a hydraulic cylinder, or an electric push rod.

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