Finish rolling mill for stainless steel cold-rolled strip

Abstract

The utility model discloses a stainless steel cold-rolled strip finish rolling mill which comprises two sets of connecting frames, a top plate is fixedly installed between the two sets of connecting frames, a lifting mechanism is fixedly installed on the upper surface of the top plate, connecting blocks are fixedly installed in the connecting frames, and a first stainless steel cold-rolled strip finish rolling roller is fixedly installed between the two sets of connecting blocks. A sliding opening is formed in one end of the connecting frame, an H-shaped plate is slidably installed in the sliding opening, motors are fixedly installed in the H-shaped plate, a second stainless steel cold-rolled strip finishing roller is fixedly installed between output shafts of the two motors, the second stainless steel cold-rolled strip finishing roller is flush with the first stainless steel cold-rolled strip finishing roller, and the upper surface of the H-shaped plate is fixedly connected with the lifting mechanism. The thickness of the stainless steel band is measured in a multi-point mode, the thickness change of the stainless steel band is monitored in real time, and it is ensured that the final thickness of a metal material meets the preset specification requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel cold rolling processing equipment, in particular to a precision rolling mill for stainless steel cold rolling strips. Background Technique

[0002] The precision rolling mill for cold rolling strips is a device used for precision rolling of stainless steel cold rolling strips. The precision rolling mill can press and flatten the surface of the stainless steel strip, reduce surface defects, and improve surface finish and flatness.

[0003] The patent with the publication number CN204842456U discloses a continuous cold rolling mill, including a frame. A power mechanism, a transmission mechanism, a conveying mechanism, and a cold rolling mechanism are arranged on the frame. The cold rolling mechanism includes a plurality of cold rolling units. Each cold rolling unit includes a cold rolling die, a transverse cold rolling roll, and a longitudinal cold rolling roll. The cold rolling die is fixedly connected to the frame. The conveying mechanism includes a longitudinal conveying roll and a transverse conveying roll. Both the longitudinal conveying roll and the transverse conveying roll are fixedly connected to the frame. In the utility model, the metal wire rod to be cold rolled is preliminarily cold rolled by the conveying mechanism and then conveyed to the cold rolling unit. After cold rolling by the cold rolling die of the cold rolling unit, the roundness is ensured by the transverse cold rolling roll and the longitudinal cold rolling roll. It sequentially passes through cold rolling units with different diameters, and finally a metal wire with a specific diameter is obtained. It is formed by one-time cold rolling without the need to replace the die, saving time and effort, and reducing production costs to a certain extent.

[0004] During the cold rolling process of the above continuous cold rolling mill for metal materials, the thickness of the metal materials cannot be monitored in real time to adjust the spacing between the subsequent rolling rolls, which easily leads to the inability to timely detect and adjust the thickness change of the metal materials during the subsequent processing, resulting in the final thickness of the rolled metal materials not meeting the design requirements, thus affecting the stability of product quality and specifications. Content of the Utility Model

[0005] The purpose of the utility model is to provide a precision rolling mill for stainless steel cold rolling strips to solve the technical problem that during the cold rolling process of metal materials, the thickness of the metal materials cannot be monitored in real time to adjust the spacing between the subsequent precision rolling rolls of the stainless steel cold rolling strips as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A precision rolling mill for stainless steel cold rolling strips includes two groups of connecting frames. A top plate is fixedly installed between the two groups of connecting frames. A lifting mechanism is fixedly installed on the upper surface of the top plate;

[0008] Among them, a connecting block is fixedly installed inside the connecting frame. A first precision rolling roll for cold-rolled stainless steel strip is fixedly installed between two groups of the connecting blocks. A sliding opening is formed at one end of the connecting frame. An H-shaped plate is slidably installed inside the sliding opening. A motor is fixedly installed inside the H-shaped plate. A second precision rolling roll for cold-rolled stainless steel strip is fixedly installed between the output shafts of two groups of the motors. The second precision rolling roll for cold-rolled stainless steel strip is flush with the first precision rolling roll for cold-rolled stainless steel strip. The upper surface of the H-shaped plate is fixedly connected to a lifting mechanism;

[0009] A thickness measuring mechanism is fixedly installed between every two pairs of connecting frames. And the thickness measuring mechanism is located between the second precision rolling roll for cold-rolled stainless steel strip and the first precision rolling roll for cold-rolled stainless steel strip, and is flush with the outer surface height of the first precision rolling roll for cold-rolled stainless steel strip.

[0010] As a preferred solution of the present utility model, the lifting mechanism includes a hydraulic rod. The hydraulic rod is fixedly installed on the upper surface of the top plate. A U-shaped frame is fixedly installed on the outer surface of the piston rod of the hydraulic rod. A sliding rod is fixedly installed on the lower surface of the U-shaped frame. The sliding rod slidably passes through the connecting frame and is located inside the sliding opening and is fixedly installed at the upper surface of the H-shaped plate.

[0011] As a preferred solution of the present utility model, the thickness measuring mechanism includes a supporting plate. The supporting plate is fixedly installed between every two pairs of connecting frames. L-shaped plates are fixedly installed on both sides of the supporting plate. Laser triangulation distance sensors are fixedly installed inside the supporting plate and the L-shaped plates respectively, and are in a flush and opposite state.

[0012] As a further preferred solution of the present utility model, the supporting plate is flush with the first precision rolling roll for cold-rolled stainless steel strip and can support and guide the stainless steel strip.

[0013] As a further preferred solution of the present utility model, the signal transmitting end of the laser triangulation distance sensor is connected to the signal receiving end of the controller. The output end of the controller is electrically connected to the electromagnetic valve control end of the hydraulic rod.

[0014] Compared with the prior art, the beneficial effects of a precision rolling mill for cold-rolled stainless steel strip of the present utility model are:

[0015] During the cold rolling process of stainless steel, the stainless steel strip to be processed can be conveyed between the first stainless steel cold rolling strip finishing roll and the second stainless steel cold rolling strip finishing roll. The second stainless steel cold rolling strip finishing roll will be driven by a motor to bite the stainless steel. The stainless steel is successively bitten between different groups of the first stainless steel cold rolling strip finishing roll and the second stainless steel cold rolling strip finishing roll. Then, through the gradually reduced gap between the stainless steel cold rolling strip finishing rolls and the gradually applied pressure, plastic deformation can be carried out on the stainless steel strip, thereby reducing its thickness and improving the surface quality. And when the stainless steel strip is pressed by multiple groups of the first stainless steel cold rolling strip finishing roll and the second stainless steel cold rolling strip finishing roll, the stainless steel strip will slide past multiple groups of thickness measuring mechanisms. The thickness measuring mechanisms will continuously measure the thickness of the stainless steel strip. If there is a deviation in the thickness value, it will be sent to the controller. The controller will adjust the lifting of the second stainless steel cold rolling strip finishing roll through the lifting mechanism according to the deviation value sent by the thickness measuring mechanism, thereby achieving the regulation of the distance between the first stainless steel cold rolling strip finishing roll and the second stainless steel cold rolling strip finishing roll, so as to make up for the thickness deviation of the stainless steel strip. And by setting thickness measuring mechanisms between each pair of the first stainless steel cold rolling strip finishing roll and the second stainless steel cold rolling strip finishing roll, multi-point measurement of the thickness of the stainless steel strip can be carried out, and the thickness change of the stainless steel strip can be monitored in real time to ensure the thickness consistency of the entire stainless steel strip. And the thickness measurement data is fed back to the controller in real time, analyzed and processed by a computer, and parameters such as rolling force and rolling speed are automatically adjusted to ensure that the thickness always remains within the set tolerance range. Moreover, an adaptive control algorithm can be introduced to dynamically adjust the movement parameters of the second stainless steel cold rolling strip finishing roll according to the real-time change of the thickness of the stainless steel strip, improving the control accuracy and response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only individual cases of the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0017] Figure 1 Structural schematic diagram of the embodiment of the present utility model;

[0018] Figure 2 Structural schematic diagram of the gradually reduced distance between the first stainless steel cold rolling strip finishing roll and the second stainless steel cold rolling strip finishing roll in the embodiment of the present utility model;

[0019] Figure 3 Structural schematic diagram of the sliding port in the embodiment of the present utility model;

[0020] Figure 4It is a schematic structural diagram of the thickness measurement mechanism in the embodiment of the present utility model;

[0021] Figure 5 It is a schematic structural diagram of the lifting mechanism in the embodiment of the present utility model.

[0022] Reference numerals: 1, connecting frame; 101, connecting block; 102, first precision rolling roll for cold-rolled stainless steel strip; 103, sliding opening; 104, top plate; 2, motor; 201, H-shaped plate; 202, second precision rolling roll for cold-rolled stainless steel strip; 3, lifting mechanism; 301, hydraulic rod; 302, U-shaped frame; 303, sliding rod; 4, thickness measurement mechanism; 401, supporting plate; 402, L-shaped plate; 403, laser triangulation distance sensor. Specific embodiments

[0023] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following further describes the embodiments of the present invention in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, an integral connection, or a detachable connection; it may be the communication inside two elements; it may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0026] See Figures 1 - 3 As shown, a precision rolling mill for cold-rolled stainless steel strip in an embodiment of the present utility model includes two groups of connecting frames 1. A top plate 104 is fixedly installed between the two groups of connecting frames 1, and a lifting mechanism 3 is fixedly installed on the upper surface of the top plate 104.

[0027] Among them, a connecting block 101 is fixedly installed inside the connecting frame 1, a first precision cold rolling roll for stainless steel strip 102 is fixedly installed between two groups of connecting blocks 101, a sliding port 103 is formed at one end of the connecting frame 1, an H-shaped plate 201 is slidably installed inside the sliding port 103, a motor 2 is fixedly installed inside the H-shaped plate 201, a second precision cold rolling roll for stainless steel strip 202 is fixedly installed between the output shafts of two groups of motors 2, the second precision cold rolling roll for stainless steel strip 202 is flush with the first precision cold rolling roll for stainless steel strip 102, and the upper surface of the H-shaped plate 201 is fixedly connected to the lifting mechanism 3;

[0028] A thickness measuring mechanism 4 is fixedly installed between every two pairs of connecting frames 1, and the thickness measuring mechanism 4 is located between the second precision cold rolling roll for stainless steel strip 202 and the first precision cold rolling roll for stainless steel strip 102 and is flush with the outer surface height of the first precision cold rolling roll for stainless steel strip 102.

[0029] During the cold rolling process of stainless steel, the stainless steel strip to be processed can be conveyed between the first precision cold rolling roll for stainless steel strip 102 and the second precision cold rolling roll for stainless steel strip 202, and the second precision cold rolling roll for stainless steel strip 202 will be driven by the motor 2 to bite the stainless steel. The stainless steel can be bitten between the first precision cold rolling roll for stainless steel strip 102 and the second precision cold rolling roll for stainless steel strip 202 of different groups in sequence. Then, through the gradually reduced gap and gradually applied pressure between the precision cold rolling rolls for stainless steel strip, plastic deformation can be carried out on the stainless steel strip, thereby reducing its thickness and improving the surface quality. And when the stainless steel strip is pressed by multiple groups of the first precision cold rolling roll for stainless steel strip 102 and the second precision cold rolling roll for stainless steel strip 202, the stainless steel strip will slide through multiple groups of thickness measuring mechanisms 4, and the thickness measuring mechanism 4 will continuously measure the thickness of the stainless steel strip. If the thickness value deviates, it will be sent to the controller, and the controller will adjust the lifting of the second precision cold rolling roll for stainless steel strip 202 by the lifting mechanism 3 according to the deviation value sent by the thickness measuring mechanism 4, so as to adjust the distance between the first precision cold rolling roll for stainless steel strip 102 and the second precision cold rolling roll for stainless steel strip 202, thereby making up for the thickness deviation of the stainless steel strip. And by setting the thickness measuring mechanism 4 between each pair of the first precision cold rolling roll for stainless steel strip 102 and the second precision cold rolling roll for stainless steel strip 202, multi-point measurement of the thickness of the stainless steel strip can be carried out, the thickness change of the stainless steel strip can be monitored in real time, the thickness consistency of the entire stainless steel strip can be ensured, and the thickness measurement data can be fed back to the controller in real time, analyzed and processed by a computer, and parameters such as rolling force and rolling speed can be automatically adjusted to ensure that the thickness always remains within the set tolerance range. Moreover, an adaptive control algorithm can be introduced to dynamically adjust the movement parameters of the second precision cold rolling roll for stainless steel strip 202 according to the real-time change of the thickness of the stainless steel strip, improving the control precision and response speed.

[0030] Such asFigures 4 - 5 As shown in the figure, the lifting mechanism 3 includes a hydraulic rod 301. The hydraulic rod 301 is fixedly installed on the upper surface of the top plate 104. A U-shaped frame 302 is fixedly installed on the outer surface of the piston rod of the hydraulic rod 301. A sliding rod 303 is fixedly installed on the lower surface of the U-shaped frame 302. The sliding rod 303 slides through the connecting frame 1 and is located in the sliding port 103 and is fixedly installed at the upper surface of the H-shaped plate 201.

[0031] The thickness measuring mechanism 4 includes a supporting plate 401. The supporting plate 401 is fixedly installed between every two pairs of connecting frames 1. L-shaped plates 402 are fixedly installed on both sides of the supporting plate 401. Laser triangulation distance sensors 403 are fixedly installed in both the supporting plate 401 and the L-shaped plates 402 and are in a flush and opposite state.

[0032] The supporting plate 401 is flush with the first cold-rolled stainless steel strip finishing roll 102 and can support and guide the stainless steel strip.

[0033] The signal transmitting end of the laser triangulation distance sensor 403 is connected to the signal receiving end of the controller. The output end of the controller is electrically connected to the solenoid valve control end of the hydraulic rod 301.

[0034] The models of the laser triangulation distance sensor 403 and the controller are Keyence LK-G5000 series and Siemens S7-1200 series PLC respectively.

[0035] During the process of the stainless steel strip being pressed by multiple groups of the first stainless steel cold rolling strip finishing rollers 102 and the second stainless steel cold rolling strip finishing rollers 202, the stainless steel strip will slide between the multiple groups of supporting plates 401 and L-shaped plates 402. The laser triangulation distance sensor 403 between the supporting plate 401 and the L-shaped plate 402 will continuously measure the thickness of the stainless steel strip. The laser triangulation distance sensor 403 measures the distance by using the triangular projection formed by the laser beam, and then calculates the thickness of the object, enabling it to monitor and control the thickness change of the stainless steel strip in real time during cold rolling. If there is a deviation between the thickness value and the set value, it will be sent to the controller, and the controller will control the solenoid valve of the hydraulic rod 301 according to the deviation value sent by the laser triangulation distance sensor 403, so that the hydraulic rod 301 drives the slide bar 303 on the lower surface of the U-shaped frame 302 to push and pull the motor 2 to lift through the H-shaped plate 201 in the sliding port 103, thereby achieving the adjustment of the distance between the first stainless steel cold rolling strip finishing roller 102 and the second stainless steel cold rolling strip finishing roller 202 to change the subsequent rolling force on the stainless steel strip, so as to make up for the thickness deviation of the stainless steel strip. And by setting the laser triangulation distance sensor 403 between each pair of the first stainless steel cold rolling strip finishing rollers 102 and the second stainless steel cold rolling strip finishing rollers 202, the thickness of the stainless steel strip can be measured at multiple points, and the thickness change of the stainless steel strip can be monitored in real time to ensure the thickness consistency of the entire stainless steel strip, and the thickness measurement data is fed back to the controller in real time, analyzed and processed by a computer, and parameters such as the rolling force and rolling speed are automatically adjusted to ensure that the thickness always remains within the set tolerance range, ensuring that the final thickness of the metal material meets the predetermined specification requirements. And by precisely controlling the distance between the first stainless steel cold rolling strip finishing roller 102 and the second stainless steel cold rolling strip finishing roller 202, the process parameters in the cold rolling process can be optimized, the processing efficiency can be maximized, frequent shutdown adjustments can be avoided, and time and human resources can be saved.

[0036] In summary, the embodiment of the present utility model measures the thickness of the stainless steel strip at multiple points, monitors the thickness change of the stainless steel strip in real time, ensures that the final thickness of the metal material meets the predetermined specification requirements, and by precisely controlling the distance between the first stainless steel cold rolling strip finishing roller 102 and the second stainless steel cold rolling strip finishing roller 202, the process parameters in the cold rolling process can be optimized, the processing efficiency can be maximized, frequent shutdown adjustments can be avoided, and time and human resources can be saved.

[0037] The above shows and describes the basic principles of the present invention. The above is only the preferred embodiment of the present invention and is not used to limit the present invention. The descriptions in the above embodiments and the specification only illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent replacements, and improvements made within the spirit and scope of the present invention shall be included in the protection scope of the present invention.

Claims

1. A precision rolling mill for cold rolling stainless steel strips, characterized in that: It includes two groups of connecting frames (1). A top plate (104) is fixedly installed between the two groups of connecting frames (1). A lifting mechanism (3) is fixedly installed on the upper surface of the top plate (104). Among them, a connecting block (101) is fixedly installed inside the connecting frame (1). A first precision rolling mill roll for cold-rolled stainless steel strip (102) is fixedly installed between the two groups of connecting blocks (101). A sliding opening (103) is formed at one end of the connecting frame (1). An H-shaped plate (201) is slidably installed inside the sliding opening (103). A motor (2) is fixedly installed inside the H-shaped plate (201). A second precision rolling mill roll for cold-rolled stainless steel strip (202) is fixedly installed between the output shafts of the two motors (2). The second precision rolling mill roll for cold-rolled stainless steel strip (202) is flush with the first precision rolling mill roll for cold-rolled stainless steel strip (102). The upper surface of the H-shaped plate (201) is fixedly connected to the lifting mechanism (3). A thickness measuring mechanism (4) is fixedly installed between every two pairs of connecting frames (1). The thickness measuring mechanism (4) is located between the second precision rolling mill roll for cold-rolled stainless steel strip (202) and the first precision rolling mill roll for cold-rolled stainless steel strip (102), and is flush with the outer surface height of the first precision rolling mill roll for cold-rolled stainless steel strip (102).

2. The finish rolling mill for cold rolling stainless steel strips according to claim 1, characterized in that: The lifting mechanism (3) includes a hydraulic rod (301). The hydraulic rod (301) is fixedly installed on the upper surface of the top plate (104). A U-shaped frame (302) is fixedly installed on the outer surface of the piston rod of the hydraulic rod (301). A sliding rod (303) is fixedly installed on the lower surface of the U-shaped frame (302). The sliding rod (303) slidably passes through the connecting frame (1) and is located inside the sliding opening (103) and is fixedly installed at the upper surface of the H-shaped plate (201).

3. A finish rolling mill for cold rolling stainless steel strips, characterized in that: The thickness measuring mechanism (4) includes a supporting plate (401). The supporting plate (401) is fixedly installed between every two pairs of connecting frames (1). L-shaped plates (402) are fixedly installed on both sides of the supporting plate (401). Laser triangulation distance sensors (403) are fixedly installed inside both the supporting plate (401) and the L-shaped plates (402), and are in a flush and opposite state.

4. A finish rolling mill for cold rolling stainless steel strips, according to claim 3, characterized in that: The supporting plate (401) is flush with the first precision rolling mill roll for cold-rolled stainless steel strip (102), and can support and guide the stainless steel strip.

5. A finish rolling mill for cold rolling stainless steel strips, according to claim 3, characterized in that: The signal transmitting end of the laser triangulation distance sensor (403) is connected to the signal receiving end of the controller. The output end of the controller is electrically connected to the solenoid valve control end of the hydraulic rod (301).

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