A single-diameter error-proofing device for roll change of a strip mill roll

Abstract

The utility model provides a kind of plate strip rolling mill roll change roll single diameter mistake-proofing device, including base, wherein, fixed installation is installed with mounting plate in the upper portion of base;Longitudinal moving mechanism is fixedly installed in the side portion of mounting plate;Detection mechanism for detecting the diameter of roll is arranged in the side portion of longitudinal moving mechanism;Further include the computer system for recording the information of roll.By setting detection mechanism can determine the diameter size of roll at any time, prevent the diameter replacement error of roll when replacing roll, solve the problem that roll single information does not meet the diameter requirement of rack to roll, the incorrect pairing of upper and lower roll diameter by setting computer system, effectively prevent the input error of roll diameter.

Description

Technical Field

[0001] This utility model relates to the field of plate and strip steel rolling production technology, and in particular to a single-diameter error prevention device for changing rolls in plate and strip rolling mills. Background Technology

[0002] The rolling process involves applying deformation pressure to the slab using rolls. To ensure the quality of strip steel products and production line efficiency, the zero-adjustment process before rolling is an essential and crucial step after each roll change. The roll diameter is a fundamental parameter and key variable in the zero-adjustment process, and the accuracy of the input roll diameter has a significant impact on the safety and stability of the rolling process. Taking a hot-rolled strip steel continuous rolling mill production line as an example, the annual roll replacement volume exceeds 30,000 pieces. Ensuring 100% accuracy of the input roll diameter and correct roll replacement is extremely difficult.

[0003] When the input roll diameter differs significantly from the actual diameter during zero adjustment of the rolling mill, there have been instances of work rolls breaking during the zero adjustment process in both hot and cold rolling production lines. Inaccurate input roll diameter is more likely to cause the zero adjustment process to fail smoothly, and troubleshooting and analyzing the cause often leads to downtime. Even if the input diameter deviation is small and the zero adjustment process is completed, inaccurate calculation of the rolling model can affect the stability of the rolling process and cause large fluctuations in the width of the rolled strip.

[0004] In the roll turnover process, errors in roll diameter may occur in the following stages: roll diameter confirmation after grinding, roll pairing, roll list formation, roll list transfer, and roll diameter input to the rolling mill.

[0005] Confirmation of roll diameter after grinding: Each roll has a unique on-site number. After rolling, the rolls need to be reground on a grinding machine. The roll number, diameter, and roll profile accuracy after grinding need to be recorded and entered into the computer system. In some production lines, the grinding machine and the roll management system can transmit data, but the roll number is still manually entered. Input errors are difficult to prevent.

[0006] Roll pairing: Strict diameter matching requirements apply to both upper and lower work rolls for strip and sheet steel. For hot-roll steel finishing mills, work rolls are typically ground with bearing housings intact, resulting in less frequent roll re-pairing. During grinding, the grinding amount must be strictly controlled to ensure the required diameter difference between the upper and lower rolls. For other types of rolls, grinding is generally done with the bearing housings removed, leading to more frequent roll re-pairing. Pairing rolls must simultaneously ensure the required diameter of both upper and lower rolls. Therefore, the pairing process can result in errors in the input of roll numbers or inability to meet the diameter requirements of the upper and lower rolls.

[0007] Roll list compilation: Rolls that meet the mill's rolling plan requirements are compiled into a roll change list based on the mill stand. The compiled roll list may not conform to the mill stand's roll diameter requirements.

[0008] Roller Slip Transmission: Roller slips are compiled by the production line's grinding roll department and transmitted to the rolling line operators for confirmation. The transmission method is primarily electronic roll slips via a computer system; some rolling lines still do not have manual paper roll slips. Under normal circumstances, errors do not occur during the transmission process. Information errors often arise when the actual rolls are replaced after the roll slip is transmitted, and the roll information on the roll slip is not adjusted in time.

[0009] Roll diameter input to the mill: The electronic roll sheet only verifies the data on the rolling line and does not re-enter incorrect data. However, there is a possibility of errors when manually entering information from the paper roll sheet on the rolling line. Utility Model Content

[0010] To address the problems of incorrect roll diameter replacement, roll list information not meeting the mill stand's requirements for roll diameter, and incorrect pairing of upper and lower roll diameters in existing technologies, and to prevent input errors in roll diameter, this utility model provides a roll list diameter error prevention device for strip mill roll changing.

[0011] This utility model provides a single-diameter error prevention device for changing rolls in a strip mill, which adopts the following technical solution: A single-diameter error prevention device for roll changing in a strip mill includes a base, wherein an mounting plate is fixedly installed on the upper part of the base; a longitudinal moving mechanism is fixedly installed on the side of the mounting plate; a detection mechanism is provided on the side of the longitudinal moving mechanism to detect the roll diameter; and a computer system for recording roll information.

[0012] By adopting the above technical solutions: by setting up a detection mechanism, the diameter of the rolls can be determined at any time, preventing incorrect roll diameter replacement when changing rolls; by setting up a computer system, the problems of roll order information not meeting the frame's requirements for roll diameter and incorrect matching of upper and lower roll diameters are solved, effectively preventing input errors in roll diameter.

[0013] Furthermore, the longitudinal movement mechanism includes a slide rail fixedly installed on the side of the mounting plate; a lead screw rotatably disposed inside the slide rail; and a slider slidably disposed inside the slide rail, the slider being threadedly connected to the lead screw. A motor for driving the slider to move longitudinally is disposed at the top of the slide rail, and a connecting arm is fixedly installed on the slider. The end of the connecting arm away from the longitudinal movement mechanism is fixedly connected to the detection mechanism by bolts.

[0014] By adopting the above technical solution: the motor drives the lead screw to rotate, causing the slider to slide inside the slide rail, thereby driving the detection mechanism to move longitudinally and adjusting the detection position of the detection mechanism.

[0015] Furthermore, the detection mechanism includes an arc-shaped housing fixedly installed at the end of the connecting arm, the upper part of the arc-shaped housing having a semi-circular structure; a drive ring slidably disposed inside the arc-shaped housing, and a slide rail located inside the arc-shaped housing having a through-passage through both ends of the arc-shaped housing, the drive ring being slidably disposed within the slide rail; a plurality of ejector pins are also disposed within the slide rail, the ejector pins extending downward after passing through the bottom wall of the slide rail.

[0016] By adopting the above technical solution: during testing, the arc-shaped shell is fitted onto the outside of the roll, and the diameter of the roll is detected by rotating the drive ring so that the ejector pin contacts the outer wall of the roll.

[0017] Furthermore, the plurality of ejector pins are evenly distributed around the axis of the arc-shaped housing.

[0018] By adopting the above technical solution, during testing, the arc-shaped shell is fitted onto the outside of the roll, so that the ends of multiple ejector pins are in contact with the outer wall of the roll, thereby increasing the accuracy of the test results.

[0019] Furthermore, a boss is provided in the slide rail at a position corresponding to the top pin.

[0020] By adopting the above technical solution, the ejector pin is moved axially through the boss and comes into contact with the outer wall of the roll.

[0021] Furthermore, the boss has a downwardly extending inclined wall with a connecting groove, and a spring is sleeved outside the ejector pin. One end of the spring abuts against the bottom wall of the slide, and the other end abuts against the upper wall of the ejector pin.

[0022] By adopting the above technical solution: when the drive ring is rotated, the ejector pin moves axially under the thrust of the connecting groove and contacts the outer wall of the roll to measure the diameter of the roll.

[0023] Furthermore, a pointer is located at the top of the ejector pin, and an elongated groove is provided on the side of the arc-shaped housing corresponding to the pointer. The pointer is slidably disposed in the groove, and a number is located on the side of the groove.

[0024] By adopting the above technical solution, the diameter of the roll can be determined by observing the corresponding position of the pointer and the number mark.

[0025] Furthermore, the computer system includes a diameter confirmation unit for confirming the diameter of the rolled rolls after grinding; a roll pairing unit for determining whether the pairing of upper and lower rolls meets the requirements; a roll list compilation unit for setting the diameter range requirements of the frame rolls; a roll list transmission unit for transmitting the roll list information; and a roll list information input unit, which includes a logic determination unit for determining whether the diameter difference between the upper and lower rolls meets the roll matching regulations and whether the roll diameter meets the frame diameter requirements.

[0026] By adopting the above technical solution: using the computer system to set judgment conditions, adding a diameter confirmation unit, prompting and confirming abnormal values ​​of the mill roll diameter after grinding, setting the computer system diameter limit through the roll pairing unit, roll list compilation unit, and roll list roll information input unit, and adding roll list information confirmation progress prompts in the roll list transmission unit during the transmission process, the problems of roll list information not meeting the mill stand's requirements for roll diameter and incorrect pairing of upper and lower roll diameters are solved, effectively preventing input errors in roll diameter.

[0027] In summary, the beneficial effects of this utility model are as follows: 1. This utility model, by setting up a detection mechanism, uses a motor in the longitudinal moving mechanism to drive the slider to move longitudinally, adjusting the position of the detection mechanism so that it is fitted onto the outside of the roll. By rotating the drive ring, multiple pins in the detection mechanism simultaneously contact the outer wall of the roll. At this time, the corresponding position of the pointer in the numerical marking is observed to determine the diameter of the roll, preventing incorrect replacement of the roll diameter when changing rolls.

[0028] 2. By utilizing computer system settings for judgment conditions and adding a diameter confirmation unit, abnormal input values ​​for the post-grind roll diameter are prompted and confirmed. Diameter limits are set in the computer system through the roll pairing unit, roll list compilation unit, and roll list / roll information input unit. The roll list transfer unit adds progress prompts for roll list information confirmation during the transfer process. This resolves issues such as roll list information not meeting the mill stand's roll diameter requirements and incorrect pairing of upper and lower roll diameters, effectively preventing input errors in roll diameter. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of part A in the middle; Figure 3 This is a schematic cross-sectional view of the present invention; Figure 4 This utility model Figure 3 Enlarged view of part B in the middle; Figure 5 This is an exploded view of the testing mechanism of this utility model.

[0030] In the diagram: 1. Base; 2. Longitudinal moving mechanism; 3. Connecting arm; 4. Detection mechanism; 5. Spring; 6. Computer system; 12. Mounting plate; 21. Slide rail; 22. Lead screw; 23. Motor; 24. Slider; 41. Arc-shaped housing; 42. Drive ring; 43. Ejector pin; 411. Slide groove; 412. Numerical identifier; 413. Slide track; 421. Boss; 422. Connecting groove; 431. Pointer. Detailed Implementation

[0031] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0032] Reference Figure 1 As shown, the utility model discloses a single-diameter error prevention device for changing rolls in a strip mill, including a base 1, on which an mounting plate 12 is fixedly installed by bolts; a longitudinal moving mechanism 2 fixedly installed on the side of the mounting plate 12; a detection mechanism 4 set on the side of the longitudinal moving mechanism 2 to detect the roll diameter, thereby preventing errors in roll diameter replacement; and a computer system 6 that records information such as roll diameter, thereby effectively preventing errors in roll diameter replacement.

[0033] Specifically, refer to Figure 1 As shown, the longitudinal moving mechanism 2 includes a slide rail 21 fixedly installed on the side of the mounting plate 12; a lead screw 22 rotatably disposed inside the slide rail 21; and a slider 24 slidably disposed inside the slide rail 21. The slider 24 is threadedly connected to the lead screw 22. A motor 23 is located at the top of the slide rail 21 to drive the slider 24 to move longitudinally. A connecting arm 3 is fixedly installed on the slider 24. The end of the connecting arm 3 away from the longitudinal moving mechanism 2 is fixedly connected to the detection mechanism 4 by bolts. In use, the motor 23 drives the lead screw 22 to rotate, causing the slider 24 to slide inside the slide rail 21, thereby driving the detection mechanism 4 to move longitudinally.

[0034] Reference Figures 1-3 As shown, the detection mechanism 4 includes an arc-shaped housing 41 fixedly installed at the end of the connecting arm 3, the upper part of the arc-shaped housing 41 having a semi-circular structure; a drive ring 42 slidably disposed inside the arc-shaped housing 41, wherein, preferably, a slide rail 413 is located inside the arc-shaped housing 41, penetrating both ends of the arc-shaped housing 41, and the drive ring 42 is slidably disposed within the slide rail 413; a pin 43 is also disposed within the slide rail 413, the pin 43 extending downward after passing through the bottom wall of the slide rail 413, and the number of pins 43 is multiple evenly distributed around the axis of the arc-shaped housing 41, the arc-shaped housing 41 is sleeved on the outside of the roll so that the ends of the multiple pins 43 are in contact with the outer wall of the roll, thereby detecting the diameter of the roll.

[0035] Specifically, refer to Figures 3-5As shown, a boss 421 is provided in the slide 413 at a position corresponding to the ejector pin 43, and the ejector pin 43 is axially moved by the boss 421. Specifically, the boss 421 has a downwardly extending inclined wall with a connecting groove 422. A spring 5 is sleeved on the outside of the ejector pin 43. One end of the spring 5 abuts against the bottom wall of the slide 413, and the other end abuts against the upper wall of the ejector pin 43. Under the elastic force of the spring 5, the top of the ejector pin 43 is embedded into the connecting groove 422. In use, rotating the drive ring 42 causes the ejector pin 43 to move axially under the thrust of the connecting groove 422 and contact the outer wall of the roll to measure the diameter of the roll.

[0036] Furthermore, a pointer 431 is located at the top of the ejector pin 43, and an elongated groove 411 is provided on the side of the arc-shaped housing 41 corresponding to the pointer 431. The pointer 431 is slidably disposed in the groove 411, and a number mark 412 is located on the side of the groove 411. In use, the diameter of the roll is determined by observing the corresponding position of the pointer 431 and the number mark 412.

[0037] Specific references Figure 1 As shown, the computer system 6 includes a diameter confirmation unit for verifying the diameter of the rolled roll after grinding. This unit sets the normal grinding amount for the rolled roll. If the grinding amount exceeds the normal amount by a certain value, a pop-up window will appear displaying the current grinding amount. The operator then judges whether this grinding amount matches the actual grinding amount of the rolled roll being ground, thus avoiding errors in diameter input. Simultaneously, if an incorrect roll number is entered, due to changes in the initial diameter of the rolled roll, an abnormal grinding amount will also pop up, allowing the roll number to be corrected promptly. A roll pairing unit determines whether the pairing of upper and lower rolls meets the requirements. The roll pairing unit sets the pairing requirements for upper and lower rolls. If the requirements are exceeded, pairing is restricted, and a pop-up window displays the reason for the restriction. The paired rolls are adjusted in time or the rolls are ground to the required range. The roll list compilation unit sets the diameter range requirements for the mill stand rolls. The mill stand can select pairs of rolls to exclude those with diameters exceeding the requirements, thus avoiding the inclusion of non-compliant roll pairs in the roll list. The roll order transfer unit transmits roll order information. After the rolling mill produces the roll order information, it transmits it to the rolling line through the roll order transfer unit. The status of the roll order information is displayed in the system. If the roll on the sent roll order needs adjustment, the rolling line must withdraw the roll order before replacing the roll if the roll order information has not been confirmed. If the roll on the sent roll order needs adjustment, the rolling line operator must return the roll order after confirming the roll order information, and the rolling mill must withdraw the roll order before replacing the roll. The roll information input unit for single rolls includes a logic judgment unit. Manual input of roll number and diameter information on paper roll lines can lead to input errors. Therefore, a logic judgment unit is added to determine whether the diameter difference between the upper and lower rolls meets the roll matching specifications and whether the roll diameter meets the frame diameter requirements.

[0038] In operation, the motor 23 in the longitudinal moving mechanism 2 drives the slider 24 to move longitudinally, adjusting the position of the detection mechanism 4 so that it fits onto the outside of the roll. Rotating the drive ring 42 causes multiple pins 43 in the detection mechanism 4 to simultaneously contact the outer wall of the roll. The position of the pointer 431 in the numerical identifier 412 is then observed to determine the roll diameter, preventing incorrect diameter replacement during roll changes. Furthermore, a computer system is used to set judgment conditions and add a diameter confirmation unit to prompt and confirm abnormal values ​​for the rolled diameter after grinding. The computer system sets diameter limits through the roll pairing unit, roll list compilation unit, and roll list / roller information input unit. The roll list transfer unit adds a progress indicator for roll list information confirmation during transfer. This solves the problems of roll list information not meeting the frame's roll diameter requirements and incorrect diameter pairing of upper and lower rolls, effectively preventing input errors in roll diameter.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A single-diameter error prevention device for roll changing in a strip mill, comprising a base (1), characterized in that, A mounting plate (12) is fixedly installed on the upper part of the base (1); a longitudinal moving mechanism (2) is fixedly installed on the side of the mounting plate (12); a detection mechanism (4) is set on the side of the longitudinal moving mechanism (2) to detect the diameter of the roll; and a computer system (6) is also included to record the information of the roll.

2. The single-diameter error prevention device for roll changing in a strip mill according to claim 1, characterized in that, The longitudinal moving mechanism (2) includes a slide rail (21) fixedly installed on the side of the mounting plate (12); a lead screw (22) rotatably installed inside the slide rail (21); and a slider (24) slidably installed inside the slide rail (21). The slider (24) is threadedly connected to the lead screw (22). A motor (23) is provided at the top of the slide rail (21) to drive the slider (24) to move longitudinally. A connecting arm (3) is fixedly installed on the slider (24). The end of the connecting arm (3) away from the longitudinal moving mechanism (2) is fixedly connected to the detection mechanism (4) by bolts.

3. A single-diameter error prevention device for changing rolls in a strip rolling mill according to claim 2, characterized in that, The detection mechanism (4) includes an arc-shaped housing (41) fixedly installed at the end of the connecting arm (3), the upper part of the arc-shaped housing (41) is a semi-circular structure; a drive ring (42) slidably disposed inside the arc-shaped housing (41), and a slide rail (413) located inside the arc-shaped housing (41) with a penetrating end of both sides of the arc-shaped housing (41), the drive ring (42) slidably disposed inside the slide rail (413); a plurality of ejector pins (43) are also disposed inside the slide rail (413), the ejector pins (43) extend downward after passing through the bottom wall of the slide rail (413).

4. A single-diameter error prevention device for roll changing in a strip mill according to claim 3, characterized in that, Multiple ejector pins (43) are evenly distributed around the axis of the arc-shaped housing (41).

5. A single-diameter error prevention device for roll changing in a strip mill according to claim 4, characterized in that, A boss (421) is provided in the slide (413) at the position corresponding to the ejector pin (43).

6. A single-diameter error prevention device for roll changing in a strip mill according to claim 5, characterized in that, The boss (421) has a downwardly extending inclined wall with a connecting groove (422) on the inclined wall. A spring (5) is sleeved outside the ejector pin (43). One end of the spring (5) abuts against the bottom wall of the slide (413), and the other end abuts against the upper wall of the ejector pin (43).

7. A single-diameter error prevention device for roll changing in a strip mill according to claim 6, characterized in that, A pointer (431) is located on the top of the ejector pin (43). An elongated groove (411) is provided on the side of the arc-shaped housing (41) corresponding to the pointer (431). The pointer (431) is slidably disposed in the groove (411). A number mark (412) is located on the side of the groove (411).

8. A single-diameter error prevention device for roll changing in a strip mill according to claim 1, characterized in that, The computer system (6) includes a diameter confirmation unit for confirming the diameter of the rolled rolls after grinding; a roll pairing unit for determining whether the pairing of the upper and lower rolls meets the requirements; a roll list compilation unit for setting the diameter range requirements of the frame rolls; a roll list transmission unit for transmitting the roll list information; and a roll list roll information input unit, which has a logic determination unit for determining whether the difference between the diameters of the upper and lower rolls meets the roll matching regulations and whether the roll diameter meets the frame diameter requirements.

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