CN-122007160-A - Device and method for reducing surface scratch of metal ultrathin belt caused by steering roller

CN122007160ACN 122007160 ACN122007160 ACN 122007160ACN-122007160-A

Abstract

The application discloses a device and a method for reducing the scratch on the surface of a metal ultrathin belt caused by a steering roller, wherein the device comprises a mechanical part and a control system, the mechanical part comprises a steering motor I, a steering motor II, a steering speed reducer I, a steering speed reducer II, a steering roller I and a steering roller II, and the control system comprises a measuring sensor, an operating platform, an industrial personal computer, a PLC and a control cabinet. The application can effectively reduce or eliminate the relative sliding between the steering roller and the metal ultrathin strip during rolling, thereby reducing or eliminating the surface scratch of the metal ultrathin strip, improving the surface quality of ultrathin strip products and meeting the requirements of products such as fine metal mask plates, vapor chamber and the like.

Inventors

SUN XIANGKUN
ZHU YONGSHENG

Assignees

苏州相华精密金属材料科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260303

Claims (4)

1. The device for reducing the surface scratch of the metal ultrathin belt caused by the steering roller is characterized by comprising a mechanical part and a control system, wherein the mechanical part comprises a steering motor I, a steering motor II, a steering speed reducer I, a steering speed reducer II, a steering roller I and a steering roller II, the control system comprises a measuring sensor, an operating table, an industrial personal computer, a PLC and a control cabinet, the industrial personal computer is provided with a human-computer interface of the control system in WinCC configuration, and the human-computer interface is provided with a different speed ratio i input domain, a target thickness h0 input domain and a forward slip correction coefficient Input field, post-slip correction coefficient Input domain, tape speed change sensitivity coefficient allowable value Input domain, band length variation sensitivity coefficient allowable value Input field, thickness control accuracy allowable value Input field, belt speed change calculation accumulation time Input field and band length change calculation accumulation time And an input field, wherein a rolling direction adjusting bidirectional switch is arranged on the operation table.
2. The device for reducing the scratch on the surface of the metal ultrathin strip caused by the steering roller according to claim 1, wherein the steering motor I and the steering motor II are reversible motors and are respectively positioned at two sides of the housing, the steering motor I drives the steering roller I through a steering speed reducer I, and the steering motor II drives the steering roller II through the steering speed reducer II.
3. The device for reducing the surface scratches of the ultrathin metal strip caused by the turning rolls according to claim 1, wherein the first turning roll and the second turning roll are hollow rolls, the surfaces are chrome-plated, the chrome-plated layer is larger than 50 microns, the surface hardness is 800-1000 HV, the surfaces are polished, and the roughness Ra=0.01-0.015 microns.
4. The method for reducing the surface scratches of a very thin metal strip caused by turning rolls as set forth in claim 1, comprising the steps of, in order: Step one, setting basic rolling parameters including different speed ratios Target thickness h0, forward slip correction coefficient Coefficient of post-slip correction Allowable value of belt speed change sensitivity coefficient Allowable value of band length change sensitivity coefficient Allowable value of thickness control precision Calculating cumulative time for belt speed change And calculating cumulative time with long change ; Step two, starting the rolling mill, wherein the linear speed of the upper working roller and the lower working roller reaches a set differential speed ratio The rolling mill enters the speed increasing stage, the upper working roll is a slow roll when rolling in the left direction, the lower working roll is a fast roll, the lower working roll is a slow roll when rolling in the right direction, the upper working roll is a fast roll, and the linear speed of the fast roll is the slow roll Doubling; step three, according to Inner fast roll linear velocity increment Judging the control mode of the steering roller and increasing the linear speed of the roller By the formula Calculated, in the formula And Respectively is The fast roller linear speed at the beginning and the end of timing is calculated by the actual measured main motor rotating speed, if In the stage of acceleration and deceleration rolling, the steering roller adopts a speed control mode and steers to the fourth step if The rolling process is performed at a constant speed, a steering roller adopts a torque control mode, and the steering step six is performed; step four, steering roller speed control mode, setting steering roller linear speed reference value, actually measuring quick roller linear speed Linear speed of slow roller The thickness H of the inlet of the rolled piece and the thickness H of the outlet of the rolled piece are set to be the linear speed of the front steering roller The linear speed of the rear steering roller is ; Step five, a steering roller speed control mode is adopted, the linear speed adjustment quantity of the steering roller is determined, the rotating speed and the winding rotating speed of the steering roller before actual measurement are calculated, and the accumulated time is calculated through a PLC and an industrial personal computer Arc length of inner front steering roller And length of winding belt If (3) And is also provided with Increasing the linear speed of the front steering roller if And is also provided with Reducing the linear speed of the front steering roller if The linear speed of the front steering roller is unchanged, the rotating speed of the rear steering roller and the unreeling rotating speed are actually measured, and the accumulated time is calculated through a PLC and an industrial personal computer Arc length of inner and rear steering roller Length of tape If (3) And is also provided with Increasing the linear speed of the rear steering roller if And is also provided with Reducing the linear speed of the rear steering roller if The linear speed of the rear steering roller is unchanged, and the step eight is performed; Step six, steering roller torque control mode, setting steering motor output torque reference value, actually measuring front steering roller linear speed Linear speed of rear steering roller Front tension And back tension According to the front steering roller linear velocity And front tension Look-up table determines the output torque of front steering motor required for eliminating the resistance torque of front steering roller According to the linear speed of the rear steering roller And back tension Look-up table determines the output torque of the rear steering motor required for eliminating the resistance torque of the rear steering roller ; Step seven, a steering roller torque control mode is adopted, the output torque adjustment quantity of a steering motor is determined, the rotating speed and the winding rotating speed of the steering roller before actual measurement are calculated, and the accumulated time is calculated through a PLC and an industrial personal computer Arc length of inner front steering roller And length of winding belt If (3) And is also provided with Increasing the output torque of the front steering motor if And is also provided with Reducing the output torque of the front steering motor if The output torque of the front steering motor is unchanged, the rotation speed of the rear steering roller and the unreeling rotation speed are actually measured, and the accumulated time is calculated through a PLC and an industrial personal computer Arc length of inner and rear steering roller Length of tape If (3) And is also provided with Increasing the output torque of the rear steering motor if And is also provided with Reducing the output torque of the rear steering motor if The output torque of the rear steering motor is unchanged; step eight, judging whether the pass is finished or not, and actually measuring the quick roller linear speed If (3) Returning to the third step if the pass is not finished Ending the pass, and turning to a step nine; Step nine, judging whether the rolling is finished, actually measuring the outlet thickness h of the rolled piece, if Changing rolling direction, exchanging winding and unwinding, exchanging front steering roller and rear steering roller, exchanging fast roller and slow roller, returning to step three if And (5) finishing rolling.

Description

Device and method for reducing surface scratch of metal ultrathin belt caused by steering roller Technical Field The application relates to metal thin strip processing, in particular to a device and a method for reducing scratch on the surface of a metal ultrathin strip caused by a turning roller. Background In recent years, with the development of low-altitude economy, intelligent robots, wearable equipment, electric automobiles, consumer electronics and other industries, the market demand for high-quality and low-cost metal ultrathin strips is rapidly rising, and the defects of spot marks, scratches and the like of high-precision metal ultrathin strips with high surface quality, which are urgently required in application scenes such as fine metal masks (FMM, fine Metal Mask), steel plate printing foils and the like, seriously affect the yield of the products. In the production process of the metal ultrathin strip, relative sliding is generated between the metal ultrathin strip and the turning roll, and the phenomenon of slipping is generated, so that the phenomenon of slipping is one of main reasons for causing scratch defects on the surface of the metal ultrathin strip. The traditional turning roll is usually an inert roll, the turning roll is driven to rotate by the friction force between the metal ultrathin strip and the turning roll, and when the friction torque exerted on the turning roll by the metal ultrathin strip is smaller than the resistance torque of the turning roll, the ultrathin strip and the turning roll relatively slide to generate a slipping phenomenon, so that scratches are generated on the surface of the ultrathin strip. In the production of extremely thin metal strips, the phenomenon of slipping is easy to occur due to small total tension, and the phenomenon of slipping occurs more frequently due to rapid change of the speed of rolled pieces in the acceleration and deceleration stages in the rolling process. Thus, to produce a high surface quality metallic very thin strip, it is necessary to eliminate the "slip" phenomenon between the metallic very thin strip and the turning rolls in order to eliminate the scratches on the strip surface. Disclosure of Invention The invention aims to provide a device and a method for reducing the surface scratch of a metal ultrathin strip caused by a turning roller, which can effectively reduce or eliminate the relative sliding between the turning roller and the metal ultrathin strip during rolling, thereby reducing or eliminating the surface scratch of the metal ultrathin strip, improving the surface quality of ultrathin strip products and meeting the requirements of products such as fine metal masks, steel plate printing foils and the like. In order to achieve the above purpose, the present invention provides the following technical solutions. The embodiment of the application discloses a device for reducing surface scratch of a metal ultrathin belt caused by a steering roller, which comprises a mechanical part and a control system, wherein the mechanical part comprises a steering motor I, a steering motor II, a steering speed reducer I, a steering speed reducer II, a steering roller I and a steering roller II, the control system comprises a measuring sensor, an operating table, an industrial personal computer, a PLC (programmable logic controller) and a control cabinet, the industrial personal computer is provided with a human-computer interface of the control system in WinCC (window computer control) configuration, and the human-computer interface is provided with a different-speed-ratio i input domain, a target thickness h0 input domain and a forward-slip correction coefficientInput field, post-slip correction coefficientInput domain, tape speed change sensitivity coefficient allowable valueInput domain, band length variation sensitivity coefficient allowable valueInput field, thickness control accuracy allowable valueInput field, belt speed change calculation accumulation timeInput field and band length change calculation accumulation timeAnd an input field, wherein a rolling direction adjusting bidirectional switch is arranged on the operation table. Preferably, in the device for reducing the scratch on the surface of the metal ultrathin belt caused by the steering roller, the steering motor I and the steering motor II are reversible motors and are respectively positioned at two sides of the housing, the steering motor I drives the steering roller I through a steering speed reducer I, and the steering motor II drives the steering roller II through a steering speed reducer II. Preferably, in the device for reducing the scratch on the surface of the metal ultrathin belt caused by the steering roller, the steering roller I and the steering roller II are hollow rollers, the surface is chromed, the chromed layer is more than 50 μm, the surface hardness is 800-1000 HV, and the surface is polished, and the roughness Ra=0.01-0.015 μm. Correspondingly, t