A cold rolling mill for improving the surface finish of cold rolled sheets

Abstract

The present invention relates to the technical field of rolling mills, and in particular to a cold rolling mill for improving the surface finish of cold-rolled plates. The cold rolling mill comprises a frame, an upper rolling mechanism and a lower rolling mechanism coordinated with the upper rolling mechanism, wherein the upper rolling mechanism and the lower rolling mechanism are arranged in the frame, and a cold rolling space is formed between the upper rolling mechanism and the lower rolling mechanism; the upper rolling mechanism comprises a lifting drive part, an upper driving assembly, two upper rotating seats and a plurality of upper rollers; the lower rolling mechanism comprises a lower driving assembly, two lower rotating seats and a plurality of lower rollers. Through the design of the upper rolling mechanism and the lower rolling mechanism, the upper rollers and the lower rollers can be replaced, and different upper rollers and lower rollers can be switched according to different cold-rolled plate rolling sizes, thereby eliminating the influence of plate road marks remaining on the upper rollers and the lower rollers of cold-rolled plates of different sizes, avoiding the plate road marks on the rollers from being transferred to the surface of the cold-rolled plates, and making the surface finish of the cold-rolled plates reach Ra≤0.8μm.

Description

Technical Field

[0001] The present invention relates to the technical field of rolling mills, in particular to a cold rolling mill for improving the surface finish of cold-rolled plates. Background Art

[0002] During continuous cold rolling of cold-rolled sheet, when rolling sheets of the same width, continuous friction between the rollers and the edges of the sheet creates localized wear bands (known as "plate road marks"). When rolling sheets of different widths or with offset feed positions, these wear bands from the original rollers transfer to the surface of the new sheet, forming periodic indentation defects. Furthermore, metal debris and zinc oxide impurities adhering to the roller surface can scratch the sheet, resulting in a 5%-8% drop in the qualified yield of the finished product. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: in order to overcome the problem in the prior art that when cold-rolled plates of different widths or input position offsets are subsequently rolled, the wear band on the original rolling roller will be transferred to the surface of the new plate, forming periodic indentation defects, a cold rolling mill is provided to improve the surface finish of the cold-rolled plate.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a cold rolling mill for improving the surface finish of cold-rolled sheets, comprising a frame, an upper rolling mechanism and a lower rolling mechanism coordinated with the upper rolling mechanism, wherein the upper rolling mechanism and the lower rolling mechanism are arranged in the frame, and a cold rolling space is formed between the upper rolling mechanism and the lower rolling mechanism;

[0005] The upper rolling mechanism includes a lifting drive member, an upper drive assembly, two upper rotating seats and a plurality of upper rollers. The upper rotating seat is rotatably arranged on the frame, the upper roller is located between the two upper rotating seats, the end of the upper roller is rotatably connected to the upper rotating seat on its side, the upper drive assembly is fixedly connected to the frame, the output end of the upper drive assembly is transmission-connected to the upper rotating seat or the upper roller, the output end of the upper drive assembly can switch between the upper rotating seat or the upper roller and provide operating power to the upper rotating seat or the upper roller connected thereto, and the output end of the lifting drive member is transmission-connected to the upper rotating seat;

[0006] The lower rolling mechanism includes a lower drive assembly, two lower rotating seats and several lower rollers. The lower rotating seat is rotatably arranged under the frame, and the lower roller is located between the two lower rotating seats. The end of the lower roller is rotatably connected to the lower rotating seat on its side. The lower drive assembly is fixedly connected to the frame, and the output end of the lower drive assembly is transmission-connected to the lower rotating seat or the lower roller. The output end of the lower drive assembly can switch the connection between the lower rotating seat or the lower roller and provide operating power for the lower rotating seat or the lower roller to which it is connected. Through the design of the upper rolling mechanism and the lower rolling mechanism, the upper roller and the lower roller can be replaced, and different upper rollers and lower rollers can be switched according to different cold-rolled plate rolling sizes, thereby eliminating the influence of plate road marks of cold-rolled plates of different sizes remaining on the upper roller and the lower roller, and avoiding the plate road marks on the rollers from being transferred to the surface of the cold-rolled plate, so that the surface finish of the cold-rolled plate reaches Ra≤0.8μm, supporting continuous rolling of multiple specifications of plates, and shortening the production line switching preparation time by 80%.

[0007] The transmission mechanism that this second motor is used for the rotation of the gear train is made up of the gears of the transmission, and the gears of the transmission are connected with the gears of the transmission gear of the transmission gear.

[0008] When the upper motor provides rotational power to the upper rotating seat, the first upper friction wheel and the second upper friction wheel are connected;

[0009] When the upper motor provides rotational power to the upper roller, the upper spline shaft and the upper spline hole of the upper roller are engaged.

[0010] In order to solve the problem that the upper drive assembly moves following the lifting drive member, it further includes an upper switching drive member and a frame sliding connection.

[0011] In order to solve the problem of difficulty in aligning the upper spline shaft and the upper spline hole, the upper spline shaft is further included in that the upper spline shaft is sleeved on the first upper connecting shaft through the shaft hole thereon, and an upper elastic element is arranged in the shaft hole of the upper spline shaft. The upper elastic element is fixedly connected to the upper spline shaft, and the other end is fixedly connected to the first upper connecting shaft.

[0012] The lower gear wheel is connected with the lower gear of the gear train by the spring, and the lower gear wheel is connected with the gear train of the gear train by the spring.

[0013] When the lower motor provides rotational power to the lower rotating seat, the first lower friction wheel and the second lower friction wheel are connected;

[0014] When the lower motor provides rotational power to the lower roller, the lower spline shaft and the lower spline hole of the lower roller are engaged.

[0015] In order to solve the problem of difficulty in aligning the lower spline shaft and the lower spline hole, the lower spline shaft is further included in that the lower spline shaft is sleeved on the first lower connecting shaft through the shaft hole thereon, and a lower elastic element is arranged in the shaft hole of the lower spline shaft. The lower elastic element is fixedly connected to the lower spline shaft, and the other end is fixedly connected to the first lower connecting shaft.

[0016] In order to solve the problem that metal debris and zinc oxide impurities adhered to the surface of the rolling roller will scratch the plate, resulting in a 5%-8% drop in the qualified rate of finished products, the upper rolling mechanism further includes an upper cleaning assembly, the upper cleaning assembly includes a cleaning sticky roller and a number of elastic connecting elements, the cleaning sticky roller is located between the two upper rotating seats, and a connecting ring is arranged on the end of the cleaning sticky roller. One end of the elastic connecting element is fixedly connected to the upper rotating seat, and the other end is fixedly connected to the connecting ring. The elastic connecting elements are distributed circumferentially around the connecting ring, and the elastic connecting elements make the cleaning sticky roller contact with the upper rolling roller located at the bottom.

[0017] In order to solve the problem that metal debris and zinc oxide impurities adhered to the surface of the roller will scratch the plate, resulting in a 5%-8% drop in the qualified rate of finished products, the lower rolling mechanism further includes a lower cleaning assembly, the lower cleaning assembly includes a scraper and a number of elastic support elements, the scraper and the lower roller are one-to-one corresponding, one end of the elastic support element is fixedly connected to the lower rotating seat, and the other end is fixedly connected to the scraper, and the elastic support element makes the scraper fit the lower roller it is facing.

[0018] In order to solve the problem that the cold-rolled plate will be offset during input, especially the plate path marks produced on the rollers of cold-rolled plates of the same size will also affect the subsequent rolling mills of cold-rolled plates of this size, the cold rolling mill further includes a transmission mechanism, which is used to provide power for the transmission of the cold-rolled plate. A positioning mechanism is arranged on the transmission mechanism, and the positioning mechanism includes two positioning components. The positioning component includes a positioning drive, a positioning plate and a mounting plate. The mounting plate is fixedly connected to the transmission mechanism, the positioning drive is fixedly connected to the mounting plate, and the output end of the positioning drive is transmission-connected to the positioning plate, and a positioning space is formed between the two positioning plates.

[0019] The beneficial effects of the present invention are as follows: the present invention provides a cold rolling mill for improving the surface finish of cold-rolled plates, and the upper rollers and lower rollers can be replaced through the design of the upper rolling mechanism and the lower rolling mechanism, and different upper rollers and lower rollers can be switched according to different cold-rolled plate rolling sizes, thereby eliminating the influence of plate road marks remaining on the upper rollers and lower rollers of cold-rolled plates of different sizes, avoiding the plate road marks on the rollers from being transferred to the surface of the cold-rolled plates, making the surface finish of the cold-rolled plates reach Ra≤0.8μm, supporting continuous rolling of plates of multiple specifications, and shortening the production line switching preparation time by 80%. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and examples.

[0021] Figure 1 It is a front view structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the top structure of the present invention;

[0023] Figure 3 It is a schematic cross-sectional view of the upper rolling mechanism and the lower rolling mechanism of the present invention;

[0024] Figure 4 This invention Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 5 This invention Figure 4 A schematic diagram of the structure in a cross-sectional view;

[0026] Figure 6 This invention Figure 3 Schematic diagram of the enlarged structure at B in the middle;

[0027] Figure 7 This invention Figure 6 A schematic diagram of the structure in a cross-sectional view;

[0028] Figure 8 This invention Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0029] Figure 9 This invention Figure 8 A schematic diagram of the structure in a cross-sectional view;

[0030] Figure 10 It is a structural schematic diagram of the upper rolling mechanism of the present invention;

[0031] Figure 11 It is a structural schematic diagram of the lower rolling mechanism of the present invention;

[0032] Figure 12 It is a schematic side sectional structure diagram of the cleaning sticky roller at the roller end of the present invention.

[0033] In the figure: 1. Frame;

[0034] 2. Upper rolling mechanism, 21. Lifting drive member, 22. Upper drive assembly, 221. Upper mounting seat, 222. Upper moving seat, 223. Upper switching drive member, 224. Upper motor, 225. First upper connecting shaft, 226. Second upper connecting shaft, 227. First upper friction wheel, 228. Second upper friction wheel, 229. Upper spline shaft, 2291. Upper elastic element, 23. Upper rotating seat, 24. Upper rolling roller, 241. Upper spline hole, 25. Upper cleaning assembly, 251. Cleaning sticky roller, 252. Elastic connecting element;

[0035] 3. Lower rolling mechanism, 31. Lower drive assembly, 311. Lower mounting seat, 312. Lower moving seat, 313. Lower switching drive member, 314. Lower motor, 315. First lower connecting shaft, 316. Second lower connecting shaft, 317. First lower friction wheel, 318. Second lower friction wheel, 319. Lower spline shaft, 3191. Lower elastic element, 32. Lower rotating seat, 33. Lower roller, 331. Lower spline hole, 34. Lower cleaning assembly, 341. Scraper, 342. Elastic supporting element;

[0036] 4. Transmission mechanism;

[0037] 5. Positioning mechanism, 51. Positioning drive member, 52. Positioning plate, 53. Mounting plate. DETAILED DESCRIPTION

[0038] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner, and thus only show components related to the present invention.

[0039] like Figure 1 Schematic diagram of the structure of the present invention, a cold rolling mill for improving the surface finish of cold-rolled sheets, comprising a frame 1, an upper rolling mechanism 2, and a lower rolling mechanism 3 coordinated with the upper rolling mechanism 2. The upper rolling mechanism 2 and the lower rolling mechanism 3 are arranged in the frame 1, and a cold rolling space is formed between the upper rolling mechanism 2 and the lower rolling mechanism 3.

[0040] like Figure 3 、 10 As shown, the upper rolling mechanism 2 includes a lifting drive member 21, an upper drive assembly 22, two upper rotating seats 23 and a plurality of upper rollers 24. The lifting drive member 21 can be a driving element such as a hydraulic cylinder or an oil cylinder. The upper rotating seat 23 is rotatably arranged on the frame 1. The upper rollers 24 are distributed at intervals along the circumference of the upper rotating seat 23. There can be one or more upper rollers 24. The upper roller 24 is located between the two upper rotating seats 23. The end of the upper roller 24 is rotatably connected to the upper rotating seat 23 on its side. The upper drive assembly 22 is fixedly connected to the frame 1. The output end of the upper drive assembly 22 is transmission-connected to the upper rotating seat 23 or the upper roller 24. The output end of the upper drive assembly 22 can switch the connection between the upper rotating seat 23 or the upper roller 24 and provide operating power for the upper rotating seat 23 or the upper roller 24 connected thereto. The output end of the lifting drive member 21 is transmission-connected to the upper rotating seat 23.

[0041] like Figure 3 、 11 As shown, the lower rolling mechanism 3 includes a lower driving assembly 31, two lower rotating seats 32 and a plurality of lower rollers 33. The lower rotating seat 32 is arranged to rotate under the frame 1. The lower rollers 33 rotate along the lower rotating seat 32. The circumferential spacing distribution is arranged, and the lower rolling roller 33 is located between the two lower rotating seats 32. The end of the lower rolling roller 33 is rotatably connected to the lower rotating seat 32 on its side. The lower driving assembly 31 is fixedly connected to the frame 1, and the output end of the lower driving assembly 31 is transmission-connected to the lower rotating seat 32 or the lower rolling roller 33. The output end of the lower driving assembly 31 can switch the connection between the lower rotating seat 32 or the lower rolling roller 33 and provide operating power for the lower rotating seat 32 or the lower rolling roller 33 connected thereto. Through the design of the upper rolling mechanism 2 and the lower rolling mechanism 3, the upper rolling roller 24 and the lower rolling roller 33 can be replaced, and different upper rolling rollers 24 and lower rolling rollers 33 can be switched according to different cold-rolled plate rolling sizes, thereby eliminating the influence of plate road marks remaining on the upper rolling roller 24 and the lower rolling roller 33 of cold-rolled plates of different sizes, and avoiding the plate road marks on the rollers from being transferred to the surface of the cold-rolled plate, so that the surface finish of the cold-rolled plate reaches Ra≤0.8μm, supporting continuous rolling of plates of multiple specifications, and shortening the production line switching preparation time by 80%.

[0042] like Figure 3 、 10As shown, the upper drive assembly 22 includes an upper mounting seat 221, an upper movable seat 222, an upper switching drive member 223, an upper motor 224, a first upper connecting shaft 225, a second upper connecting shaft 226, a first upper friction wheel 227, a second upper friction wheel 228 and an upper spline shaft 229. The upper mounting seat 221 is arranged on the frame 1, the upper movable seat 222 and the upper mounting seat 221 are slidably connected, the upper motor 224 and the upper movable seat 222 are fixedly connected, the output end of the upper motor 224 is transmission-connected to the first upper connecting shaft 225, the first upper friction wheel 227 is sleeved on the first upper connecting shaft 225, and the upper spline shaft 229 is slidably arranged on the first upper connecting shaft 225. The end of the upper connecting shaft 225, and the upper spline shaft 229 and the first upper connecting shaft 225 are elastically connected, the second upper connecting shaft 226 and the upper rotating seat 23 are fixedly connected, the second upper friction wheel 228 is sleeved on the second upper connecting shaft 226, and the upper roller 24 is close to the upper spline shaft 229. An upper spline hole 241 that matches the upper spline shaft 229 is opened on the end. The upper switching drive member 223 is used to provide power for the movement of the upper motor 224. The upper switching drive member 223 is arranged on the frame 1. The output end of the upper switching drive member 223 is transmission-connected to the upper movable seat 222. The upper switching drive member 223 can be a driving element such as a hydraulic cylinder or an oil cylinder;

[0043] When the upper motor 224 provides rotational power to the upper rotating seat 23, the first upper friction wheel 227 and the second upper friction wheel 228 engage;

[0044] When the upper motor 224 provides rotational power to the upper roller 24 , the upper spline shaft 229 engages with the upper spline hole 241 of the upper roller 24 .

[0045] like Figure 3 As shown, the upper switching drive member 223 is slidingly connected to the frame 1. The sliding connection can be a slide rail and a slider matching the slide rail. The slider is fixedly connected to the upper switching drive member 223, the slide rail is fixedly connected to the frame 1, and the slide rail is slidingly connected to the slider. The extension direction of the slide rail is the same as the telescopic direction of the lifting drive member 21.

[0046] like Figure 3 、 4 As shown in Figures 5 and 6, the upper spline shaft 229 is sleeved on the first upper connecting shaft 225 through the shaft hole thereon. An upper elastic element 2291 is arranged in the shaft hole of the upper spline shaft 229. The upper elastic element 2291 can be an elastic element such as a spring. The upper elastic element 2291 is fixedly connected to the upper spline shaft 229, and the other end is fixedly connected to the first upper connecting shaft 225.

[0047] like Figure 3 、 11As shown, the lower driving assembly 31 includes a lower mounting seat 311, a lower moving seat 312, a lower switching driving member 313, a lower motor 314, a first lower connecting shaft 315, a second lower connecting shaft 316, a first lower friction wheel 317, a second lower friction wheel 318 and a lower spline shaft 319, the lower mounting seat 311 is arranged under the frame 1, the lower moving seat 312 and the lower mounting seat 311 are slidably connected, the lower motor 314 and the lower moving seat 312 are fixedly connected, the output end of the lower motor 314 is transmission-connected to the first lower connecting shaft 315, and the first lower The friction wheel 317 is sleeved on the first lower connecting shaft 315, and the lower spline shaft 319 is slidably arranged at the end of the first lower connecting shaft 315. The lower spline shaft 319 and the first lower connecting shaft 315 are elastically connected. The second lower connecting shaft 316 is fixedly connected to the lower rotating seat 32. The second lower friction wheel 318 is sleeved under the second lower connecting shaft 316. The lower roller 33 is provided with a lower spline hole 331 matching the lower spline shaft 319 at one end close to the lower spline shaft 319. The lower switching drive member 313 can be a driving element such as a hydraulic cylinder or an oil cylinder.

[0048] When the lower motor 314 provides rotational power to the lower rotating base 32, the first lower friction wheel 317 and the second lower friction wheel 318 engage;

[0049] When the lower motor 314 provides rotational power to the lower roller 33 , the lower spline shaft 319 and the lower spline hole 331 of the lower roller 33 are engaged.

[0050] like Figure 3 、 6 As shown in Figures 7 and 7, the lower spline shaft 319 is sleeved on the first lower connecting shaft 315 through the shaft hole thereon, and a lower elastic element 3191 is arranged in the shaft hole of the lower spline shaft 319. The lower elastic element 3191 can be an elastic element such as a spring. The lower elastic element 3191 is fixedly connected to the lower spline shaft 319, and the other end is fixedly connected to the first lower connecting shaft 315.

[0051] like Figure 3 、 10As shown in Figure 12, the upper rolling mechanism 2 includes an upper cleaning assembly 25, which includes a cleaning sticky roller 251 and a plurality of elastic connecting elements 252. The cleaning sticky roller 251 is located between the two upper rotating seats 23. A connecting ring is arranged on the end of the cleaning sticky roller 251. One end of the elastic connecting element 252 is fixedly connected to the upper rotating seat 23, and the other end is fixedly connected to the connecting ring. The elastic connecting element 252 can be an elastic element such as a spring. The elastic connecting element 252 is distributed circumferentially around the connecting ring. The elastic connecting element 252 makes the cleaning sticky roller 251 and the bottommost The upper rolling mechanism 2 contacts the upper rolling roller 24, and the upper rolling mechanism 2 uses a cleaning sticky roller 251 to clean the impurities on the upper rolling roller 24, so as to prevent the impurities from falling on the rolled cold-rolled plate and causing damage to the cold-rolled plate. The cleaning sticky roller 251, also known as the sticky roller, is a cleaning tool for removing surface dust, dander and tiny pollutants. The types of cleaning sticky rollers 251 include: Butyl sticky rubber roller: the main material is butyl rubber, which has good chemical stability and thermal stability, corrosion resistance, and high temperature resistance; Resin sticky rubber roller: with resin as raw material, with specific viscosity and wear resistance.

[0052] The elastic connecting element 252 below the cleaning sticky roller 251 is not sufficient to support the cleaning sticky roller 251 , so the cleaning sticky roller 251 falls below and contacts the upper roller 24 during operation, continuously cleaning it.

[0053] like Figure 3 、 8 As shown in Figures 9 and 11, the lower rolling mechanism 3 includes a lower cleaning component 34, which includes a scraper 341 and several elastic supporting elements 342. The elastic supporting elements 342 can be elastic elements such as springs. The scrapers 341 and the lower rollers 33 are aligned one by one. One end of the elastic supporting element 342 is fixedly connected to the lower rotating seat 32, and the other end is fixedly connected to the scraper 341. The elastic supporting element 342 allows the scraper 341 to fit the lower roller 33 it corresponds to, and the scraper 341 is used to scrape and clean the rolling on the lower roller 33. The scraper 341 has a long service life and does not need to be replaced frequently. The elastic supporting element 342 uses its elastic tension to make the scraper 341 fit or contact the lower roller 33.

[0054] like Figure 1 、 2As shown, the cold rolling mill also includes a transmission mechanism 4, which is used to provide power for the transmission of the cold-rolled plate. A positioning mechanism 5 is arranged on the transmission mechanism 4, and the positioning mechanism 5 includes two positioning components. The positioning component includes a positioning driver 51, a positioning plate 52 and a mounting plate 53. The mounting plate 53 is fixedly connected to the transmission mechanism 4, and the positioning driver 51 is fixedly connected to the mounting plate 53. The output end of the positioning driver 51 is transmission-connected to the positioning plate 52, and a positioning space is formed between the two positioning plates 52. The positioning plate 52 has an inlet surface that shrinks inward from the input to the output direction on the inner side near the input end of the cold-rolled plate. The positioning mechanism 5 limits the input space of the cold-rolled plate, so that its rolling range is maintained within a certain range, avoiding the influence of the generated plate road marks. The positioning driver 51 can be a power mechanism such as a hydraulic cylinder and a screw mechanism.

[0055] Working principle:

[0056] The cold-rolled plate to be rolled passes through the positioning space between the two positioning plates 52 of the positioning mechanism 5 through the transmission mechanism 4 and is input into the cold rolling space between the upper rolling mechanism 2 and the lower rolling mechanism 3. The position of the cold-rolled plate is controlled by the positioning mechanism 5, thereby controlling the generation position of the plate road marks on the upper roller 24 and the lower roller 33 during rolling, and avoiding contact between cold-rolled plates of the same size and the plate road marks.

[0057] When rolling cold-rolled plates of different sizes and replacing the upper roller 24 and the lower roller 33, the upper switching drive member 223 causes the upper motor 224 to move, and the upper motor 224 drives the first upper friction wheel 227 to move, so that the first upper friction wheel 227 and the second upper friction wheel 228 engage with each other. The upper motor 224 starts to drive the second upper friction wheel 228 to rotate through the first upper friction wheel 227, and the second upper friction wheel 228 drives the upper rotating seat 23 to rotate through the second upper connecting shaft 226, thereby realizing the switching of the upper roller 24. ; The lower switching drive member 313 causes the lower motor 314 to move, and the lower motor 314 drives the first lower friction wheel 317 to move, so that the first lower friction wheel 317 and the second lower friction wheel 318 engage. The lower motor 314 starts and drives the second lower friction wheel 318 to rotate through the first lower friction wheel 317. The second lower friction wheel 318 drives the lower rotating seat 32 to rotate through the second lower connecting shaft 316, thereby realizing the switching of the lower rolling roller 33. Different sizes of cold-rolled plates correspond to a group of upper rolling rollers 24 and lower rolling rollers 33.

[0058] When the switching is completed and rolling is started, the upper switching drive member 223 moves the upper motor 224, and the upper motor 224 drives the upper spline shaft 229 to move, and observes whether the upper spline shaft 229 retracts, thereby starting the upper motor 224 to rotate and adjust the angle of the upper spline shaft 229, so that the upper spline shaft 229 and the upper spline hole 241 of the upper roller 24 engage with each other, and the upper motor 224 starts to drive the upper spline shaft 229 to rotate through the first upper connecting shaft 225, and the upper spline shaft 229 drives the upper roller 24 to rotate through the upper spline hole 241, thereby realizing the rotation of the upper roller 24, and the upper spline shaft 229 can provide circumferential fixation for the upper rotating seat 23;

[0059] The lower switching drive 313 moves the lower motor 314, and the lower motor 314 drives the lower spline shaft 319 to move. The lower spline shaft 319 is observed to see whether it retracts, thereby starting the lower motor 314 to rotate and adjust the angle of the lower spline shaft 319, so that the lower spline shaft 319 and the lower spline hole 331 of the lower roller 33 engage with each other. The lower motor 314 starts and drives the lower spline shaft 319 to move through the first lower connecting shaft 315. The lower spline shaft 319 drives the lower roller 33 to rotate through the lower spline hole 331, thereby realizing the rotation of the lower roller 33. The lower spline shaft 319 can provide circumferential fixation for the lower rotating seat 32.

[0060] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A cold rolling mill for improving the surface finish of cold rolled sheets, characterized in that: It includes a frame, an upper rolling mechanism and a lower rolling mechanism matched with the upper rolling mechanism, wherein the upper rolling mechanism and the lower rolling mechanism are arranged in the frame, and a cold rolling space is formed between the upper rolling mechanism and the lower rolling mechanism; The upper rolling mechanism includes a lifting drive member, an upper drive assembly, two upper rotating seats and a plurality of upper rollers, the upper rotating seat is rotatably arranged on the frame, the upper roller is located between the two upper rotating seats, the end of the upper roller is rotatably connected to the upper rotating seat on its side, the upper drive assembly is fixedly connected to the frame, the output end of the upper drive assembly is transmission-connected to the upper rotating seat or the upper roller, the output end of the upper drive assembly can switch the connection between the upper rotating seat or the upper roller and provide operating power for the upper rotating seat or the upper roller connected thereto, and the output end of the lifting drive member is transmission-connected to the upper rotating seat; The lower rolling mechanism includes a lower driving assembly, two lower rotating seats and a plurality of lower rollers, the lower rotating seat is rotatably arranged under the frame, the lower rollers are located between the two lower rotating seats, the ends of the lower rollers are rotatably connected to the lower rotating seats on the side where they are located, the lower driving assembly is fixedly connected to the frame, the output end of the lower driving assembly is transmission-connected to the lower rotating seat or the lower rollers, and the output end of the lower driving assembly can switch between the lower rotating seat or the lower rollers and provide operating power to the lower rotating seat or the lower rollers to which they are connected; The upper rolling mechanism includes an upper cleaning assembly, which includes a cleaning sticky roller and several elastic connecting elements. The cleaning sticky roller is located between two upper rotating seats. A connecting ring is arranged on the end of the cleaning sticky roller. One end of the elastic connecting element is fixedly connected to the upper rotating seat, and the other end is fixedly connected to the connecting ring. The elastic connecting elements are distributed circumferentially around the connecting ring. The elastic connecting elements make the cleaning sticky roller contact with the upper rolling roller located at the bottom. The cleaning sticky roller will fall down and contact the upper rolling roller during work to continuously clean it.

2. A cold rolling mill for improving the surface finish of cold rolled sheets according to claim 1, characterized in that: The transmission mechanism that this second motor is used for the rotation of the gear train is made up of the gears of the transmission gear and the gears of the transmission gear and the gears of the transmission gear. When the upper motor provides rotational power to the upper rotating seat, the first upper friction wheel and the second upper friction wheel are connected; When the upper motor provides rotational power for the upper roller, the upper spline shaft is engaged with the upper spline hole of the upper roller.

3. A cold rolling mill for improving the surface finish of cold rolled sheets according to claim 2, characterized in that: The upper switching drive member is slidably connected to the frame.

4. A cold rolling mill for improving the surface finish of cold rolled sheets according to claim 2, characterized in that: The upper spline shaft is sleeved on the first upper connecting shaft through the shaft hole thereon, and an upper elastic element is arranged in the shaft hole of the upper spline shaft. The upper elastic element is fixedly connected to the upper spline shaft, and the other end is fixedly connected to the first upper connecting shaft.

5. The cold rolling mill for improving the surface finish of cold rolled sheets according to claim 1, characterized in that: The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket. The tooth on the lower sprocket is meshed with tooth on upper sprocket. When the lower motor provides rotational power to the lower rotating seat, the first lower friction wheel and the second lower friction wheel are connected; When the lower motor provides rotational power to the lower roller, the lower spline shaft is engaged with the lower spline hole of the lower roller.

6. A cold rolling mill for improving the surface finish of cold rolled sheets according to claim 5, characterized in that: The lower spline shaft is sleeved on the first lower connecting shaft through the shaft hole thereon, and a lower elastic element is arranged in the shaft hole of the lower spline shaft. The lower elastic element is fixedly connected to the lower spline shaft, and the other end is fixedly connected to the first lower connecting shaft.

7. The cold rolling mill for improving the surface finish of cold rolled sheets according to claim 1, characterized in that: The lower rolling mechanism includes a lower cleaning assembly, which includes a scraper and a plurality of elastic supporting elements. The scrapers and the lower rolling rollers are aligned one by one. One end of the elastic supporting element is fixedly connected to the lower rotating seat, and the other end is fixedly connected to the scraper. The elastic supporting element allows the scraper to fit the lower rolling roller it corresponds to.

8. The cold rolling mill for improving the surface finish of cold rolled sheets according to claim 1, characterized in that: The cold rolling mill also includes a transmission mechanism, which is used to provide power for the transmission of cold-rolled plates. A positioning mechanism is arranged on the transmission mechanism, and the positioning mechanism includes two positioning components. The positioning components include a positioning drive, a positioning plate and a mounting plate. The mounting plate is fixedly connected to the transmission mechanism, the positioning drive is fixedly connected to the mounting plate, and the output end of the positioning drive is transmission-connected to the positioning plate, forming a positioning space between the two positioning plates.

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