A steel plate cold rolling device with flatness self-checking function

Abstract

This invention discloses a cold rolling apparatus for steel plates with a flatness self-inspection function, belonging to the technical field of cold rolling apparatus for steel plates. It includes a base, an electric lifting rod, a cold rolling self-inspection component, a transmission connector, a support shell, and cold rolling rollers. This invention utilizes a detection plate and detection rollers to screen the flatness of the steel plate. Flatness-qualified areas can pass directly through the gap between the detection rollers, while flatness-unqualified areas cause the detection plate to deflect around a crossbar. As the detection rollers deflect with the detection plate, the distance between the upper and lower detection rollers increases, allowing unqualified areas of the steel plate to pass through. The deflection of the detection plate drives the detection element to move, achieving the purpose of detection and screening. The deflection of the detection plate also drives the deflection of a marking component. The marking ball inside the marking shell contacts and squeezes the unqualified area. As the marking ball rolls, the marking liquid adhering to it adheres to the unqualified area, thus marking the unqualified area.

Description

Technical Field

[0001] This invention relates to the field of cold rolling equipment for steel plates, specifically a cold rolling equipment for steel plates with a flatness self-inspection function. Background Technology

[0002] Cold rolling mills are crucial equipment in the metal processing industry. They are primarily used to roll metal sheets or strips at room temperature to achieve desired dimensional accuracy, shape specifications, and physical properties. The working principle of a cold rolling mill is based on mechanical force. Through a series of precisely designed rollers and transmission devices, it performs pressing, stretching, and bending operations on the metal, thereby changing its shape, size, and properties. Cold rolling significantly improves the mechanical properties of metal materials, such as strength, hardness, and toughness, while also improving surface quality, such as smoothness and flatness. Furthermore, cold rolling enables continuous and automated production of metal materials, improving production efficiency and quality stability.

[0003] If there are stains on the surface of the cold rolling rolls during cold rolling of steel plates, it will have an adverse effect on the quality of cold rolling. In severe cases, it will render the entire batch of steel plates unusable, resulting in a large amount of economic loss. At the same time, it will also damage the cold rolling rolls themselves. At present, cold rolling equipment on the market lacks an effective method for detecting the flatness of the formed steel plates. Even if some equipment has a self-inspection function, it cannot mark the unqualified parts of the steel plates, which is not conducive to the inspection and analysis of the staff later. Summary of the Invention

[0004] The purpose of this invention is to provide a cold rolling apparatus for steel plates with a flatness self-inspection function to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cold rolling device for steel plates with a flatness self-inspection function, comprising a base, an electric lifting rod mounted on the base, a cold rolling self-inspection component mounted on the output shaft of the electric lifting rod, a support shell mounted on the base, cold rolling rolls symmetrically and rotatably mounted on the support shell, and transmission shafts at both ends of the cold rolling rolls passing through the support shell and mounted with transmission connectors; the cold rolling self-inspection component comprises a bottom plate and a top plate, a connecting column mounted between the bottom plate and the top plate, a first detection component and a second detection component symmetrically and slidably mounted on the connecting column, and the bottom plate mounted on the output shaft of the electric lifting rod.

[0006] The cold rolling mill for steel plates is connected to an external control cabinet, which contains a control system used to control the entire cold rolling mill for steel plates.

[0007] Preferably, the cold-rolled self-inspection assembly further includes an electric telescopic device and a side plate. The electric telescopic device is installed on the top plate, and the output shaft of the electric telescopic device passes through the top plate and is connected to the first detection assembly. The side plate is installed between the top plate and the bottom plate, and a transmission gear is rotatably installed on the side plate. The first detection assembly and the second detection assembly mesh with the transmission gear for transmission. Cleaning assemblies are installed on both the bottom plate and the top plate.

[0008] The thin steel sheet coil is positioned and installed, and the end of the steel sheet passes through the cold rolling rolls and the cold rolling self-inspection assembly, connecting the end of the steel sheet to the coiler. The control system activates the electric telescopic device, and the output shaft of the electric telescopic device drives the first detection assembly to slide down along the connecting column. The rack on the first detection assembly drives the transmission gear to rotate, and the transmission gear drives the rack on the second detection assembly to slide. The rack on the second detection assembly drives the second detection assembly to slide on the connecting column. The detection rolls on the first and second detection assemblies move closer to each other until the distance between them matches the thickness of the steel sheet to be tested. Then, the control system activates the electric lifting rod, which drives the entire cold rolling self-inspection assembly to move up and down, aligning the gap between the detection rolls with the gap between the cold rolling rolls and keeping them on the same horizontal plane. The control system activates the drive motor, which drives the cold rolling rolls to rotate, and the rotating cold rolling rolls cold roll the steel sheet. The cold-rolled steel sheet is then wound around by the coiler.

[0009] Preferably, the first detection component includes a tray, which is slidably mounted on a connecting column. Racks are installed on both sides of the tray, and the racks mesh with transmission gears for transmission. Two crossbars are installed inside the tray, and detection elements are rotatably mounted on the crossbars at equal intervals. The detection elements on the two crossbars are staggered relative to each other. The tray is connected to the output shaft of the electric telescopic device.

[0010] Preferably, the detection element includes a detection plate and a detection terminal. The detection plate is rotatably mounted on a crossbar, and the detection terminal is mounted on the crossbar. The detection terminal is located on one side of the detection plate and is in contact with the detection plate. A detection roller is rotatably mounted on the detection plate. A reset assembly is installed between the detection plate and the support plate. A marking assembly is installed on the detection plate. A transmission component is installed on the side of the detection plate near the detection terminal. The transmission component has an annular ramp. The transmission component is rotatably connected to the crossbar and is located inside the detection terminal.

[0011] When cold-rolled steel sheets pass through the cold-rolled self-inspection assembly, the surface of the steel sheet comes into contact with the inspection rollers. When the flatness of the steel sheet surface is qualified, the steel sheet passes smoothly through the gap between the inspection rollers. When the steel sheet has defects such as bulges or wavy edges, the unqualified area of ​​the steel sheet cannot pass directly through the corresponding inspection roller due to the increased height. The raised part of the unqualified area pushes the inspection roller of that area, and the inspection roller causes the inspection plate to deflect around the crossbar. When the inspection roller deflects with the inspection plate, the distance between the upper and lower inspection rollers will increase, thus allowing the unqualified area of ​​the steel sheet to pass.

[0012] Preferably, the marking assembly includes a marking shell mounted on a detection plate. The marking shell contains a marking liquid chamber filled with marking liquid. A sliding rod is slidably mounted inside the marking shell, and a telescopic spring is installed between the sliding rod and the marking shell. A baffle is mounted at one end of the sliding rod, fitting into a groove within the marking liquid chamber. A transmission rod is mounted on the baffle. A marking ball is movably mounted inside the marking shell, and the marking ball abuts against one end of the transmission rod.

[0013] When the detection plate deflects, the marking components on it deflect synchronously and come into contact with the defective area. The marking ball inside the marking shell contacts the defective area and is squeezed. This squeezing causes the marking ball to slide slightly within the marking shell. The sliding marking ball squeezes the transmission rod, which in turn drives the baffle and sliding rod to slide. The baffle slides out of its engagement with the marking liquid chamber, and the marking liquid in the marking liquid chamber flows out from the gap between the baffle and the marking shell. The flowing marking liquid soaks the marking ball. When the defective area slides, friction causes the marking ball to roll. As the marking ball rolls, the marking liquid adhering to it will... The marker adheres to the non-conforming area, thus marking it. After the non-conforming area passes through, the compressed reset spring in the reset assembly rebounds, causing the retracted reset crank to extend. The reset crank pushes the detection plate to deflect in the opposite direction, completing the reset of a single detection element. After the detection element is reset, the pressure on the marker ball disappears. Under the action of the telescopic spring, the sliding rod drives the baffle to engage with the groove on the marking liquid chamber again, preventing the marking liquid in the marking liquid chamber from flowing out and preventing leakage that could contaminate the qualified area of ​​the steel plate.

[0014] Preferably, the detection terminal includes a detection housing, a connecting piece, and a sliding member. The detection housing, connecting piece, and sliding member are all mounted on a crossbar. The transmission member is located inside the detection housing. A contact rod is mounted on the connecting piece. A pin is slidably mounted on the sliding member. An end shell is mounted on one end of the pin. An elastic diaphragm is mounted inside the end shell. A piezoelectric crystal is mounted between the elastic diaphragms. A detection spring is mounted between the pin and the sliding member. One end of the pin contacts an annular ramp on the transmission member.

[0015] When the cold rolling mill is not in operation, the detection spring is in a naturally extended state, the contact rod is in contact with one side of the elastic film, the elastic film does not deform, and the ejector pin is in contact with the lowest point of the annular slope.

[0016] When the detection plate deflects, it synchronously drives the transmission component to deflect as well. As the transmission component deflects, the ejector pin rises along the lowest point of the annular ramp, sliding on the sliding component. The ejector pin causes the elastic diaphragm inside the end shell to press against the contact rod. The elastic diaphragm deforms under pressure, transmitting the pressure to the piezoelectric crystal. Based on the piezoelectric effect, the piezoelectric crystal generates an electrical signal when pressed. This signal is transmitted to the control system via wires. When the defective area is large, the longer the detection plate deflects, the longer the corresponding electrical signal duration. Conversely, when the protrusions and wavy edges of the defective area are large, the larger the angle of deflection, the stronger the corresponding electrical signal. The control system can analyze the extent and degree of the defective area and locate individual detection elements, thus completing the flatness detection of the steel plate. When the flatness of the steel plate is found to be unqualified, the control system activates the cleaning component to clean the cold rolling rolls. If the flatness is still unqualified after cleaning, cold rolling is stopped, and the staff checks the steel plate itself and other factors one by one.

[0017] Preferably, the reset assembly includes a reset housing, which is mounted on a support plate. A reset crank is slidably installed inside the reset housing, and a reset spring is installed between the reset crank and the support plate. The reset spring is located inside the reset housing.

[0018] Preferably, the cleaning assembly includes an electric telescopic rod and an air pump. The electric telescopic rod is installed on the top plate and the bottom plate respectively, and the air pump is installed on the top plate and the bottom plate respectively. A scraper is installed on the output shaft of the electric telescopic rod, and the air pump is connected to the inside of the scraper through a pipe.

[0019] Before cold rolling, the control system activates the drive motor, whose output shaft rotates the universal joint. The universal joint, through a transmission connector, rotates the cold rolling roll. Then, the control system activates the electric telescopic rod, whose output shaft extends the scraper forward, bringing the scraper blade close to the cold rolling roll, leaving only a small gap between them. Simultaneously, the air pump is activated, drawing air from the suction chamber through pipes, creating negative pressure and suction at the suction port. This suction removes particles from the cold rolling roll. When there are adhering substances on the roll, the shearing force between the rotating roll and the scraper scrapes them off. The scraped-off substances slide from the scraper's inclined surface into the suction chamber, thus cleaning the surface of the cold rolling roll before cold rolling and preventing indentations on the steel plate from occurring during the cold rolling process.

[0020] Preferably, the scraper is equipped with a scraper blade, one side of which is a sloping surface and the other side of which is a concave surface. The concave surface is used to prevent positional conflict with the cold rolling roll. The scraper is equipped with a dust suction chamber and a dust suction port on one side of the scraper.

[0021] Preferably, the transmission connector is externally connected to a drive device, which includes a drive motor. A universal joint is mounted on the output shaft of the drive motor, and the universal joint is connected to the cold rolling roll through the transmission connector.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The first detection component is slidable by an electric telescopic device. The racks and pinions on the first and second detection components work with the transmission gears to achieve relative equidistant displacement of the first and second detection components, thereby achieving the purpose of adjusting the gap between the detection rolls. The electric lifting rod drives the entire cold rolling self-inspection assembly to move up and down, so that the gap between the detection rolls is aligned with the gap between the cold rolling rolls and kept on the same horizontal plane, thereby achieving the purpose of adjusting the position of the entire cold rolling self-inspection assembly.

[0024] 2. The flatness of the steel plate is screened using a detection plate and detection rollers. Areas that meet the flatness requirements can pass directly through the gap between the detection rollers. Areas that do not meet the flatness requirements cause the detection plate to deflect around a crossbar. As the detection rollers deflect with the plate, the distance between the upper and lower detection rollers increases, allowing the non-compliant areas of the steel plate to pass through. The deflection of the detection plate drives the detection element to move, achieving the purpose of detection and screening. After the non-compliant area passes through, the compressed reset spring in the reset assembly rebounds. The rebound of the reset spring causes the retracted reset crank to extend, pushing the detection plate to deflect in the opposite direction, thus resetting the individual detection element.

[0025] 3. The deflection of the detection plate causes the marking assembly to deflect as well. The marking ball inside the marking shell contacts and squeezes the defective area. The marking liquid in the marking liquid chamber flows out from the gap between the baffle and the marking shell, soaking the marking ball. As the marking ball rolls, the marking liquid adhering to it will stick to the defective area, thus marking the defective area. After the detection element is reset, the pressure on the marking ball disappears, and the sliding rod drives the baffle to engage with the groove on the marking liquid chamber again, preventing the marking liquid in the marking liquid chamber from flowing out and preventing leakage of the marking liquid, which would contaminate the qualified area of ​​the steel plate.

[0026] 4. Before cold rolling, the control system idles the cold rolling rolls, and then uses an electric telescopic rod to bring the scraper blades of the scraper close to the cold rolling rolls. At the same time, the air pump is turned on, and the air pump draws the air out of the dust collection chamber through the pipeline, creating a negative pressure in the dust collection chamber and generating suction at the dust collection port. The suction force removes the particles on the cold rolling rolls, and the shearing force generated between the rotating cold rolling rolls and the scraper blades scrapes off the attached materials. The scraped-off materials slide into the dust collection chamber from the inclined surface of the scraper blades with the suction force, thus cleaning the surface of the cold rolling rolls before cold rolling and preventing the attachments and particles on the cold rolling rolls from causing indentations on the steel plate during the cold rolling process.

[0027] 5. The deflection of the detection plate drives the deflection of the transmission component, which in turn causes the ejector pin to rise, resulting in pressure on the piezoelectric crystal and generating an electrical signal. The control system analyzes the duration and intensity of the electrical signal to determine the extent and severity of the defective area. It can also locate individual detection elements to complete the flatness inspection of the steel plate. When a flatness defect is detected, the control system activates the cleaning assembly to clean the cold rolling rolls. After cleaning, the system works in conjunction with the cold rolling self-inspection assembly to screen for defects. Attached Figure Description

[0028] Figure 1 This is an overall perspective view of the cold rolling apparatus for steel plates of the present invention;

[0029] Figure 2 This is a perspective view of the cold rolling apparatus for steel plates of the present invention;

[0030] Figure 3 The three-dimensional representation of the cold-rolled self-inspection component of the present invention Figure 1 ;

[0031] Figure 4 For the present invention Figure 3 A magnified view of a portion of region A in the middle;

[0032] Figure 5 The cold-rolled self-inspection component of the present invention is in three dimensions. Figure 2 ;

[0033] Figure 6 For the present invention Figure 5 A magnified view of a portion of region B in the middle;

[0034] Figure 7 This is a perspective view of the first detection component of the present invention;

[0035] Figure 8 This is a perspective view of the detection element of the present invention;

[0036] Figure 9 This is a perspective view of the reset component of the present invention;

[0037] Figure 10 For the present invention Figure 9 A magnified view of a portion of region C in the middle;

[0038] Figure 11 This is a perspective view of the marking component of the present invention.

[0039] In the diagram: 1. Base; 2. Electric lifting rod; 3. Cold rolling self-inspection assembly; 4. Transmission connector; 5. Support shell; 6. Cold rolling roll; 31. Base plate; 32. Top plate; 33. Electric telescopic device; 34. Cleaning assembly; 35. Side plate; 36. First detection assembly; 37. Second detection assembly; 38. Detection element; 39. Connecting column; 341. Air pump; 342. Electric telescopic rod; 343. Scraper; 3431. Dust suction chamber; 3432. Scraper; 3433. Sloping surface; 3434. Concave surface; 3435. Dust suction port; 351. Transmission gear; 361. Support plate; 362. Crossbar; 363. Rack; 381. Reset Components; 382, ​​Detection roller; 383, Detection plate; 384, Marking assembly; 385, Detection terminal; 3811, Reset housing; 3812, Reset spring; 3813, Reset crank; 3851, Detection housing; 3852, Connecting piece; 3853, Contact rod; 3854, Ejector pin; 3855, Sliding component; 3856, Detection spring; 3857, End shell; 3858, Piezoelectric crystal; 3859, Elastic film; 3841, Marking shell; 3842, Marking ball; 3843, Marking liquid chamber; 3844, Baffle; 3845, Transmission rod; 3846, Sliding rod; 3847, Telescopic spring; 3831, Transmission component. Detailed Implementation

[0040] 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.

[0041] like Figures 1-11 As shown, the present invention provides a technical solution for a cold rolling device for steel plates with a flatness self-inspection function: it includes a base 1, an electric lifting rod 2 installed on the base 1, a cold rolling self-inspection component 3 installed on the output shaft of the electric lifting rod 2, a support shell 5 installed on the base 1, cold rolling rolls 6 symmetrically and rotatably installed on the support shell 5, and transmission shafts at both ends of the cold rolling rolls 6 passing through the support shell 5 and equipped with transmission connectors 4; the cold rolling self-inspection component 3 includes a bottom plate 31 and a top plate 32, a connecting column 39 installed between the bottom plate 31 and the top plate 32, a first detection component 36 and a second detection component 37 symmetrically and slidably installed on the connecting column 39, and the bottom plate 31 is installed on the output shaft of the electric lifting rod 2.

[0042] The cold rolling mill for steel plates is connected to an external control cabinet, which contains a control system used to control the entire cold rolling mill for steel plates.

[0043] The transmission connector 4 is externally connected to a drive device, which includes a drive motor. A universal joint is mounted on the output shaft of the drive motor, and the universal joint is connected to the cold rolling roll 6 through the transmission connector 4.

[0044] The cleaning assembly 34 includes an electric telescopic rod 342 and an air pump 341. The electric telescopic rod 342 is installed on the top plate 32 and the bottom plate 31 respectively. The air pump 341 is installed on the top plate 32 and the bottom plate 31 respectively. A scraper 343 is installed on the output shaft of the electric telescopic rod 342. The air pump 341 is connected to the inside of the scraper 343 through a pipe.

[0045] The scraper 343 is equipped with a scraper 3432. One side of the scraper 3432 is a sloping surface 3433, and the other side of the scraper 3432 is a concave surface 3434. The concave surface 3434 is used to prevent positional conflict with the cold rolling roll 6. The scraper 343 is equipped with a dust suction chamber 3431, and a dust suction port 3435 is provided on one side of the scraper 343.

[0046] The cold-rolled self-inspection assembly 3 also includes an electric telescopic device 33 and a side plate 35. The electric telescopic device 33 is installed on the top plate 32. The output shaft of the electric telescopic device 33 passes through the top plate 32 and is connected to the first detection assembly 36. The side plate 35 is installed between the top plate 32 and the bottom plate 31. A transmission gear 351 is rotatably installed on the side plate 35. The first detection assembly 36 and the second detection assembly 37 mesh with the transmission gear 351 for transmission. Cleaning assemblies 34 are installed on both the bottom plate 31 and the top plate 32.

[0047] The first detection component 36 includes a support plate 361, which is slidably mounted on a connecting column 39. Racks 363 are mounted on both sides of the support plate 361, and the racks 363 mesh with a transmission gear 351 for transmission. Two crossbars 362 are installed inside the support plate 361. Detection elements 38 are rotatably mounted on the crossbars 362 at equal intervals. The detection elements 38 on the two crossbars 362 are staggered. The support plate 361 is connected to the output shaft of the electric telescopic device 33.

[0048] The detection element 38 includes a detection plate 383 and a detection terminal 385. The detection plate 383 is rotatably mounted on the crossbar 362, and the detection terminal 385 is mounted on the crossbar 362. The detection terminal 385 is located on one side of the detection plate 383 and is in contact with the detection plate 383. A detection roller 382 is rotatably mounted on the detection plate 383. A reset assembly 381 is installed between the detection plate 383 and the support plate 361. A marking assembly 384 is installed on the detection plate 383. A transmission component 3831 is installed on the side of the detection plate 383 near the detection terminal 385. The transmission component 3831 has an annular ramp and is rotatably connected to the crossbar 362. The transmission component 3831 is located inside the detection terminal 385.

[0049] The marking assembly 384 includes a marking shell 3841, which is mounted on a detection plate 383. The marking shell 3841 contains a marking liquid chamber 3843 filled with marking liquid. A sliding rod 3846 is slidably mounted inside the marking shell 3841. A telescopic spring 3847 is installed between the sliding rod 3846 and the marking shell 3841. A baffle 3844 is mounted at one end of the sliding rod 3846, fitting into a groove within the marking liquid chamber 3843. A transmission rod 3845 is mounted on the baffle 3844. A marking ball 3842 is movably mounted inside the marking shell 3841, and the marking ball 3842 abuts against one end of the transmission rod 3845.

[0050] The detection terminal 385 includes a detection housing 3851, a connecting piece 3852, and a sliding member 3855. The detection housing 3851, the connecting piece 3852, and the sliding member 3855 are all mounted on the crossbar 362. The transmission member 3831 is located inside the detection housing 3851. A contact rod 3853 is mounted on the connecting piece 3852. A pin 3854 is slidably mounted on the sliding member 3855. An end shell 3857 is mounted on one end of the pin 3854. An elastic diaphragm 3859 is installed inside the end shell 3857. A piezoelectric crystal 3858 is installed between the elastic diaphragms 3859. A detection spring 3856 is installed between the pin 3854 and the sliding member 3855. One end of the pin 3854 contacts the annular ramp on the transmission member 3831.

[0051] When the cold rolling mill is not in operation, the detection spring 3856 is in a naturally extended state, the contact rod 3853 is in contact with one side of the elastic film 3859, the elastic film 3859 does not deform, and the ejector pin 3854 is in contact with the lowest point of the annular slope.

[0052] The reset assembly 381 includes a reset housing 3811, which is mounted on a support plate 361. A reset crank 3813 is slidably installed inside the reset housing 3811. A reset spring 3812 is installed between the reset crank 3813 and the support plate 361, and the reset spring 3812 is located inside the reset housing 3811.

[0053] The working principle of this invention is as follows: Before cold rolling, the control system turns on the drive motor. The output shaft of the drive motor drives the universal joint to rotate. The universal joint drives the cold rolling roll 6 to rotate through the transmission connector 4. Then, the control system turns on the electric telescopic rod 342. The output shaft of the electric telescopic rod 342 drives the scraper 343 to extend forward, so that the scraper blade 3432 of the scraper 343 is close to the cold rolling roll 6, leaving only a small gap between the scraper blade 3432 and the cold rolling roll 6. At the same time, the air pump 341 is turned on. The air pump 341 pumps the dust from the suction chamber 3431 through the pipe. The gas is drawn away, creating a negative pressure in the dust collection chamber 3431, which in turn generates suction at the dust collection port 3435. This suction removes particles from the cold rolling roll 6. When there are deposits on the cold rolling roll 6, the shearing force generated between the rotating cold rolling roll 6 and the scraper 3432 scrapes off the deposits. The scraped-off deposits slide from the inclined surface 3433 of the scraper 3432 into the dust collection chamber 3431 with the suction, thus achieving surface cleaning of the cold rolling roll 6 before cold rolling and preventing deposits and particles on the cold rolling roll 6 from causing indentations on the steel plate during the cold rolling process.

[0054] The thin steel sheet coil is positioned and installed, and the end of the steel sheet passes through the cold rolling roll 6 and the cold rolling self-inspection assembly 3, connecting the end of the steel sheet to the coiler. The control system activates the electric telescopic device 33. The output shaft of the electric telescopic device 33 drives the first detection assembly 36 to slide down along the connecting column 39. The rack 363 on the first detection assembly 36 drives the transmission gear 351 to rotate. The transmission gear 351 drives the rack 363 on the second detection assembly 37 to slide. The rack 363 on the second detection assembly 37 drives the second detection assembly 37 to slide along the connecting column 39. The first detection component 36 and the second detection component 37 slide up and down, and the detection rollers 382 on them move closer to each other until the distance between them is consistent with the thickness of the steel plate to be tested. Then the control system activates the electric lifting rod 2, which drives the entire cold rolling self-inspection component 3 to move up and down, so that the gap between the detection rollers 382 is aligned with the gap between the cold rolling rollers 6 and kept on the same horizontal plane. The control system activates the drive motor, which drives the cold rolling rollers 6 to rotate. The cold rolling rollers 6 rotate and cold roll the steel plate. The cold rolled steel plate is then wound by the coiler.

[0055] When the cold-rolled steel sheet passes through the cold-rolled self-inspection assembly 3, the surface of the steel sheet will contact the inspection roller 382. When the flatness of the steel sheet surface is qualified, the steel sheet passes smoothly through the gap between the inspection rollers 382. When the steel sheet has defects such as bulges or wavy edges, the unqualified area of ​​the steel sheet cannot pass directly through the corresponding inspection roller 382 due to the increased height. The raised part of the unqualified area pushes the inspection roller 382 of that area. The inspection roller 382 drives the inspection plate 383 to deflect around the crossbar 362. When the inspection roller 382 deflects with the inspection plate 383, the distance between the upper and lower inspection rollers 382 will increase, thereby allowing the unqualified area of ​​the steel sheet to pass.

[0056] When the detection plate 383 deflects, the marking component 384 on it deflects synchronously and comes into contact with the defective area. The marking ball 3842 inside the marking shell 3841 comes into contact with the defective area and is squeezed. The squeezing causes the marking ball 3842 to slide slightly inside the marking shell 3841. The sliding of the marking ball 3842 squeezes the transmission rod 3845, which drives the baffle 3844 and the sliding rod 3846 to slide. The baffle 3844 slides out of its engagement with the marking liquid cavity 3843, and the marking liquid in the marking liquid cavity 3843 flows out from the gap between the baffle 3844 and the marking shell 3841. The flowing marking liquid soaks the marking ball 3842. When the defective area slides, the friction causes the marking ball 3842 to roll. When in motion, the marking liquid adhering to it will adhere to the non-conforming area, thereby marking the non-conforming area. After the non-conforming area passes, the compressed reset spring 3812 in the reset assembly 381 rebounds. When the reset spring 3812 rebounds, it drives the retracted reset crank 3813 to extend. The reset crank 3813 pushes the detection plate 383 to deflect in the opposite direction, completing the reset of a single detection element 38. After the detection element 38 is reset, the pressure on the marking ball 3842 disappears. Under the action of the elastic force of the telescopic spring 3847, the sliding rod 3846 drives the baffle 3844 to engage with the groove on the marking liquid cavity 3843 again, preventing the marking liquid in the marking liquid cavity 3843 from flowing out and preventing the marking liquid from leaking and contaminating the qualified area of ​​the steel plate.

[0057] When the detection plate 383 deflects, it synchronously drives the transmission component 3831 to deflect. As the transmission component 3831 deflects, the ejector pin 3854 rises along the lowest point of the annular ramp. The ejector pin 3854 rises and slides on the sliding component 3855. The ejector pin 3854 causes the elastic film 3859 inside the end shell 3857 to press against the contact rod 3853. The elastic film 3859 deforms under pressure and transmits the pressure to the piezoelectric crystal 3858. According to the piezoelectric effect principle, the piezoelectric crystal 3858 generates [something] when pressed. The electrical signal is transmitted to the control system via wires. When the defective area is large, the longer the detection plate 383 deflects, the longer the corresponding electrical signal duration. When the protrusions and wavy edges of the defective area are large, the larger the angle of deflection of the detection plate 383, the stronger the corresponding electrical signal. Based on this, the control system can analyze the range and degree of defective areas, and can also locate the steel plate based on the position of each individual detection element 38, thereby completing the flatness detection. When the flatness of the steel plate is detected as unqualified, the control system activates the cleaning component 34 to clean the cold rolling roll 6. If the flatness is still unqualified after cleaning, cold rolling is stopped, and the staff checks the steel plate itself and other factors one by one.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cold rolling apparatus for steel plates with a flatness self-inspection function, characterized in that: The cold rolling device for steel plates includes a base (1), an electric lifting rod (2) is installed on the base (1), a cold rolling self-inspection component (3) is installed on the output shaft of the electric lifting rod (2), a support shell (5) is installed on the base (1), and cold rolling rolls (6) are symmetrically and rotatably installed on the support shell (5). The transmission shafts at both ends of the cold rolling rolls (6) pass through the support shell (5) and are equipped with transmission connectors (4). The cold rolling self-inspection component (3) includes a bottom plate (31) and a top plate (32). A connecting column (39) is installed between the bottom plate (31) and the top plate (32). A first detection component (36) and a second detection component (37) are symmetrically and slidably installed on the connecting column (39). The bottom plate (31) is installed on the output shaft of the electric lifting rod (2). The cold-rolled self-inspection assembly (3) also includes an electric telescopic device (33) and a side plate (35). The electric telescopic device (33) is installed on the top plate (32). The output shaft of the electric telescopic device (33) passes through the top plate (32) and is connected to the first detection assembly (36). The side plate (35) is installed between the top plate (32) and the bottom plate (31). A transmission gear (351) is rotatably installed on the side plate (35). The first detection assembly (36) and the second detection assembly (37) mesh with the transmission gear (351) for transmission. The first detection component (36) includes a tray (361), which is slidably mounted on a connecting column (39). Racks (363) are mounted on both sides of the tray (361), and the racks (363) mesh with a transmission gear (351). Two crossbars (362) are installed inside the tray (361), and detection elements (38) are rotatably mounted on the crossbars (362) at equal intervals. The tray (361) is connected to the output shaft of an electric telescopic device (33). The detection element (38) includes a detection plate (383) and a detection terminal (385). The detection plate (383) is rotatably mounted on a crossbar (362). The detection terminal (385) is mounted on the crossbar (362). The detection terminal (385) is located on one side of the detection plate (383). The detection terminal (385) is in contact with the detection plate (383). A detection roller (382) is rotatably mounted on the detection plate (383). A reset assembly (381) is installed between the detection plate (383) and the support plate (361). A marking assembly (384) is installed on the detection plate (383). A transmission component (3831) is installed on the side of the detection plate (383) near the detection terminal (385). The transmission component (3831) has an annular ramp. The transmission component (3831) is rotatably connected to the crossbar (362). The transmission component (3831) is located inside the detection terminal (385).

2. The cold rolling apparatus for steel plates with flatness self-inspection function according to claim 1, characterized in that: Cleaning components (34) are installed on both the bottom plate (31) and the top plate (32).

3. A cold rolling apparatus for steel plates with flatness self-inspection function according to claim 1, characterized in that: The detection elements (38) on the two crossbars (362) are misaligned.

4. A cold rolling apparatus for steel plates with flatness self-inspection function according to claim 1, characterized in that: The marking assembly (384) includes a marking shell (3841), which is mounted on a detection plate (383). The marking shell (3841) has a marking liquid cavity (3843) filled with marking liquid. A sliding rod (3846) is slidably installed inside the marking shell (3841). A telescopic spring (3847) is installed between the sliding rod (3846) and the marking shell (3841). A baffle (3844) is installed at one end of the sliding rod (3846). The baffle (3844) is fitted into a groove in the marking liquid cavity (3843). A transmission rod (3845) is installed on the baffle (3844). A marking ball (3842) is movably installed inside the marking shell (3841). The marking ball (3842) abuts against one end of the transmission rod (3845).

5. A cold rolling apparatus for steel plates with flatness self-inspection function according to claim 1, characterized in that: The detection terminal (385) includes a detection housing (3851), a connecting piece (3852), and a sliding member (3855). The detection housing (3851), the connecting piece (3852), and the sliding member (3855) are all mounted on the crossbar (362). The transmission member (3831) is located inside the detection housing (3851). A contact rod (3853) is mounted on the connecting piece (3852), and a sliding member (3855) is slidably mounted on the sliding member (3855). There is a pin (3854), one end of which is fitted with an end shell (3857), an elastic film (3859) is installed inside the end shell (3857), a piezoelectric crystal (3858) is installed between the elastic films (3859), a detection spring (3856) is installed between the pin (3854) and the sliding member (3855), and one end of the pin (3854) is in contact with the annular ramp on the transmission member (3831).

6. A cold rolling apparatus for steel plates with flatness self-inspection function according to claim 1, characterized in that: The reset assembly (381) includes a reset housing (3811), which is mounted on a support plate (361). A reset crank (3813) is slidably installed inside the reset housing (3811). A reset spring (3812) is installed between the reset crank (3813) and the support plate (361), and the reset spring (3812) is located inside the reset housing (3811).

7. A cold rolling apparatus for steel plates with flatness self-inspection function according to claim 2, characterized in that: The cleaning assembly (34) includes an electric telescopic rod (342) and an air pump (341). The electric telescopic rod (342) is installed on the top plate (32) and the bottom plate (31) respectively. The air pump (341) is installed on the top plate (32) and the bottom plate (31) respectively. A scraper (343) is installed on the output shaft of the electric telescopic rod (342). The air pump (341) is connected to the inside of the scraper (343) through a pipe.

8. A cold rolling apparatus for steel plates with flatness self-inspection function according to claim 7, characterized in that: The scraper (343) is provided with a scraper (3432), one side of the scraper (3432) is a sloping surface (3433), and the other side of the scraper (3432) is a concave surface (3434). The concave surface (3434) is used to prevent positional conflict with the cold rolling roll (6). The scraper (343) is provided with a dust suction chamber (3431), and a dust suction port (3435) is provided on one side of the scraper (343).

9. A cold rolling apparatus for steel plates with flatness self-inspection function according to claim 1, characterized in that: The transmission connector (4) is externally connected to a drive device, which includes a drive motor. A universal joint is installed on the output shaft of the drive motor, and the universal joint is connected to the cold rolling roll (6) through the transmission connector (4).

Images