Roller straightness detection system and method

Abstract

The present invention provides a roller straightness detection system and method, which belongs to the field of roller detection technology, and includes a roller support mechanism, a detection mechanism and a control mechanism. The roller support mechanism includes a workbench and two support seats, the fixed supports on the two support seats are used to jointly support the fixed roller, and the movable supports on the two support seats are used to jointly support the movable roller, and a detection gap is formed between the fixed roller and the movable roller; the detection mechanism includes a light source assembly, an adjustment frame and a plurality of color recognition sensors; the control mechanism includes a mounting frame and a control box, the control box is mounted on the top of the mounting frame, the control box has a built-in controller, an alarm light is arranged on the top of the control box, and a display screen is provided on the front side of the control box, and the controller is electrically connected to a plurality of color recognition sensors, the alarm light and the display screen. The roller straightness detection system provided by the present invention can replace manual straightness detection of two rollers, and greatly reduce detection errors.

Description

Technical Field

[0001] The invention belongs to the technical field of roller detection, and more specifically, relates to a roller straightness detection system and method. Background Art

[0002] The coating machines and roller presses in the lithium battery industry, as well as the precision steel plate rolling mills in the steel industry, all these rolling mills need to be equipped with pairs of precision rollers with different diameters. The surface roughness and straightness of the two rollers determine the uniformity and consistency of the thickness of the rolled products. After the rollers are finely ground on a high-precision grinder, we need to measure and detect the gap between a pair of rollers at different angles to determine the straightness of the rollers. The size of the gap can be distinguished by the light that passes through the gap, thereby judging whether the straightness of the rollers meets the technical requirements.

[0003] The straightness of existing rollers is often measured by cross-measurement in the middle and at both ends with a micrometer to confirm whether the roller diameter is qualified. Then two people manually bring the two rollers together, and the inspector observes the brightness and color of the light coming through the gap with their naked eyes to determine the size of the roller gap and then the straightness of the two rollers. This measurement method and manual roll gap and naked eye observation of the color of light bring great uncertainty to the accuracy of the color of the light measured and observed due to the limitations of the employees' own quality, and the detection error is relatively large. Summary of the invention

[0004] The purpose of the present invention is to provide a roller straightness detection system, which aims to solve the problem of large detection error in the detection method of manually observing the brightness and color of the light transmitted through the gap to judge the size of the roller gap and then judge the straightness of the two rollers.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a roller straightness detection system, comprising:

[0006] A roller supporting mechanism, the roller supporting mechanism comprises a workbench and two supporting seats, the two supporting seats are arranged on the upper end surface of the workbench at intervals on the left and right, the upper end surface of the supporting seat is respectively provided with a fixed support and a movable support from back to front, the movable support can be slidably arranged on the supporting seat along the front-back direction, the fixed supports on the two supporting seats are used to jointly support the fixed roller, the movable supports on the two supporting seats are used to jointly support the movable roller, and a detection gap is formed between the fixed roller and the movable roller;

[0007] A detection mechanism, the detection mechanism comprising a light source assembly, an adjustment frame and a plurality of color recognition sensors, the light source assembly being arranged on the upper end surface of the workbench and being located between the two support seats, the light source assembly being located directly below the detection gap, the adjustment frame being arranged across the two support seats and the upper end of the adjustment frame being provided with a detection beam, the detection beam being located directly above the detection gap, and the length direction of the detection beam being consistent with the length direction of the detection gap, and the plurality of color recognition sensors being arranged on the detection beam in sequence and spaced apart along the length direction;

[0008] A control mechanism, the control mechanism includes a mounting frame and a control box, the mounting frame is arranged on one side of the workbench and extends upward, the control box is installed on the top of the mounting frame, the control box has a built-in controller, an alarm light is arranged on the top of the control box, and a display screen is provided on the front side of the control box, and the controller is electrically connected to the plurality of color recognition sensors, the alarm lights and the display screen.

[0009] In a possible implementation, a light-transmitting plate is disposed below the detection beam, the light-transmitting plate is located directly above the detection gap, and the color recognition sensor is used to sense the color of light passing through the light-transmitting plate.

[0010] In a possible implementation, a slide rail is provided on the upper end surface of the support seat along the length direction, a support slider is provided at the lower end of the movable support, and the support slider is slidably provided on the slide rail. A first linear drive mechanism is provided at one end of the movable support close to the upper end surface of the support seat, and the first linear drive mechanism is electrically connected to the alarm light through the controller. The first linear drive mechanism is connected to the movable support and is used to drive the movable support to slide along the length direction of the slide rail to approach the fixed support.

[0011] In a possible implementation, a second linear drive mechanism is disposed on the upper end surface of the workbench, and the second linear drive mechanism is connected to any one of the support seats and is used to drive any one of the support seats to move away from or closer to another support seat.

[0012] In a possible implementation manner, a displacement sensor is installed on a side of the movable support close to the fixed support, the displacement sensor is electrically connected to the controller, and the displacement sensor is used to detect the displacement of the movable support.

[0013] In a possible implementation, two rotating wheels are disposed on the top of each of the fixed support and the movable support, and the two rotating wheels are spaced apart to support the shaft end of the movable roller and the shaft end of the fixed roller.

[0014] In a possible implementation, a rotating motor and a tensioning frame are respectively provided on the outer side surface of any one of the movable supports, the rotating motor is electrically connected to the controller, a driving wheel is provided at the driving end of the rotating motor, a tensioning wheel is provided on the tensioning frame, a driven wheel is provided on the shaft end of the movable roller on the side close to the rotating motor, a synchronous belt is wound around the driving wheel, the tensioning wheel and the driven wheel, and the tensioning wheel can be close to or away from the rotating motor so that the tightness of the synchronous belt can be adjusted by the tensioning wheel.

[0015] In a possible implementation, the tensioning frame includes an adjustment plate and a tensioning shaft, the adjustment plate is provided with a long hole, an adjustment screw connected to the outer side surface of the movable support is provided through the long hole, the tensioning shaft is vertically fixed to the outer side surface of the adjustment plate, and the tensioning wheel is rotatably installed on the end of the tensioning shaft.

[0016] In a possible implementation, the mounting frame includes a longitudinally arranged telescopic rod and a swivel arm, the lower end of the telescopic rod is connected to one side of the workbench, one end of the swivel arm is rotatably connected to the upper end of the telescopic rod, and the other end of the swivel arm extends downward and is connected to the control box.

[0017] The beneficial effect of a roller straightness detection system provided by the present invention is that: compared with the prior art, two support seats are arranged on the workbench, and each support seat is provided with a fixed support and a movable support from the back to the front, and the two fixed supports located on the two support seats are arranged correspondingly, and the two movable supports located on the two support seats are arranged correspondingly. The two rollers (fixed roller and movable roller) are placed on the two fixed supports and the two movable supports respectively. According to the specifications and dimensions of the two rollers, the two movable supports are moved at the same time, thereby driving the movable roller to approach the fixed roller. When the movable support moves into place, the alarm light on the controller lights up, and a detection gap is formed between the movable roller and the fixed roller. The height of the above-mentioned adjustment frame is adjusted, and the detection beam of the adjustment frame is located directly above the detection gap and the length direction is consistent with the length direction of the detection gap. The multiple color recognition sensors on the detection beam are arranged in sequence along the length direction of the detection gap. The light source assembly below the detection gap is turned on, and the light emitted by the light source assembly forms different colors after passing through the detection gap. Multiple color recognition sensors recognize the color of the light and send it to the controller. The controller determines the gap value of each position of the detection gap according to the color signal value and displays it through the display screen, and finally obtains the straightness of the gap between the fixed roller and the movable roller. The roller straightness detection system provided by the present invention can replace manual straightness detection of two rollers, greatly reducing detection errors.

[0018] The present invention also provides a roller straightness detection method, which uses the roller straightness detection system and comprises the following steps:

[0019] S1: Preparation stage:

[0020] The two rollers are defined as a movable roller and a fixed roller, and both ends of the movable roller are supported on movable supports on two supporting seats, and both ends of the fixed roller are supported on fixed seats on the two supporting seats;

[0021] S2: Approach phase:

[0022] S2.1: The first linear drive mechanism drives the movable support to move to the initial position P0, and the alarm light indicates the first alarm color;

[0023] S2.2: The first linear drive mechanism drives the movable support to move rapidly toward the fixed support, and the displacement sensor detects the distance value from the fixed support in real time;

[0024] S2.3: When the displacement sensor detects that the distance from the fixed support reaches a predetermined value, the first linear drive mechanism stops driving the movable support, the movable support stops at the predetermined position P1, and the alarm light indicates a second alarm color;

[0025] S3: Detection phase:

[0026] S3.1: Turn on the light source assembly, adjust the detection beam to be located directly above the detection gap, the first linear drive mechanism drives the movable support to slowly move toward the fixed support, and multiple color recognition sensors detect the color of the light emitted by the light source assembly and passing through the detection gap, and send it to the controller synchronously;

[0027] S3.2: The controller receives signals sent by multiple color recognition sensors and performs straightness analysis of the roll gap; if at least one color recognition sensor does not detect light or more than two color recognition sensors detect purple light at the same time, the first linear drive mechanism stops driving the movable support, and the display screen displays the roll gap straightness information and saves it in the controller;

[0028] S3.3: After synchronously rotating the movable roller and the fixed roller by a preset angle a, where a=180° / n, repeat steps S2.1 to S3.2 for a total of n-1 times, and the display screen displays the roller gap straightness information in turn and saves it in the controller respectively.

[0029] The beneficial effect of a roller straightness detection method provided by the present invention is that: compared with the prior art, in the preparation stage, the fixed roller and the movable roller are placed on the fixed support and the movable support respectively, and in the approach stage, the movable support is brought close to the fixed support so that the movable roller and the fixed roller reach the predetermined position. Finally, in the detection stage, multiple color recognition sensors identify the color of the light passing through the detection gap and send it to the controller. The controller determines the gap value of each position of the detection gap according to the color signal value and displays it through the display screen. Finally, the straightness of the gap between the fixed roller and the movable roller is obtained, which greatly improves the accuracy of the straightness detection and reduces the detection error. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A three-dimensional roller straightness detection system provided by the present invention Figure 1 ;

[0032] Figure 2 A three-dimensional roller straightness detection system provided by the present invention Figure 2 ;

[0033] Figure 3 for Figure 2 A partial enlarged view of the M in the middle;

[0034] Figure 4 A connection diagram of an electrical control system of a roller straightness detection system provided by the present invention;

[0035] Figure 5 The present invention provides a flow chart of a roller straightness detection method.

[0036] In the figure:

[0037] 110, workbench; 120, support seat; 130, fixed support; 140, movable support; 150, slide rail; 160, support slider; 170, first linear drive mechanism; 180, second linear drive mechanism; 190, displacement sensor; 1100, rotating wheel; 1120, rotating motor; 1130, driving wheel; 1140, adjusting plate; 1150, tensioning shaft; 1160, long strip hole; 1170, adjusting screw; 1180, tensioning wheel; 1190, driven wheel; 1200, synchronous belt;

[0038] 210, light source assembly; 220, lifting rod; 230, detection beam; 240, color recognition sensor; 250, light-transmitting plate; 260, adjustment slider;

[0039] 310, telescopic rod; 320, rotating arm; 330, control box; 340, warning light; 350, display screen;

[0040] 400, fixed roller;

[0041] 500. Moving roller. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] Unless explicitly defined otherwise, the use of terms such as "first," "second," or "third," etc., are intended to distinguish different objects rather than to describe a specific order.

[0044] Unless otherwise expressly defined, directional words such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, so they cannot be understood as limiting the specific scope of protection of the present invention.

[0045] See also Figures 1 to 4 Now, a roller straightness detection system provided by the present invention is described. A roller straightness detection system includes a roller supporting mechanism, a detection mechanism and a control mechanism.

[0046] The roller supporting mechanism includes a workbench 110 and two support seats 120. The two support seats 120 are arranged at intervals on the upper end surface of the workbench 110. The upper end surface of the support seat 120 is respectively provided with a fixed support 130 and a movable support 140 from back to front. The movable support 140 can be slidably arranged on the support seat 120 along the front and rear directions. The fixed supports 130 on the two support seats 120 are used to jointly support the fixed roller 400. The movable supports 140 on the two support seats 120 are used to jointly support the movable roller 500. A detection gap is formed between the fixed roller 400 and the movable roller 500. The detection mechanism includes a light source assembly 210, an adjustment frame and a plurality of color recognition sensors 240. The light source assembly 210 is arranged on the upper end surface of the workbench 110 and is located between the two support seats 120. The component 210 is located directly below the detection gap, the adjustment frame is straddled between the two support seats 120 and the upper end of the adjustment frame is provided with a detection beam 230, the detection beam 230 is located directly above the detection gap, and the length direction of the detection beam 230 is consistent with the length direction of the detection gap, and multiple color recognition sensors 240 are arranged on the detection beam 230 in sequence along the length direction; the control mechanism includes a mounting frame and a control box 330, the mounting frame is arranged on one side of the workbench 110 and extends upward, the control box 330 is installed on the top of the mounting frame, the control box 330 has a built-in controller, an alarm light 340 is arranged on the top of the control box 330, and the front side of the control box 330 has a display screen 350, and the controller is electrically connected to the multiple color recognition sensors 240, the alarm light 340 and the display screen 350.

[0047] Compared with the prior art, the present invention provides a roller straightness detection system. Two support seats 120 are arranged on a workbench 110. A fixed support 130 and a movable support 140 are arranged on each support seat 120 from back to front. The two fixed supports 130 on the two support seats 120 are arranged correspondingly, and the two movable supports 140 on the two support seats 120 are arranged correspondingly. Two rollers (a fixed roller 400 and a movable roller 500) are placed on the two fixed supports 130 and the two movable supports 140, respectively. According to the specifications and sizes of the two rollers, the two movable supports 140 are moved at the same time, thereby driving the movable roller 500 to approach the fixed roller 400. When the movable support 140 is moved into place, the alarm light 340 on the controller lights up, and a detection gap is formed between the movable roller 500 and the fixed roller 400. The height of the above-mentioned adjustment frame is adjusted, and the detection beam 230 of the adjustment frame is located directly above the detection gap and the length direction is consistent with the length direction of the detection gap. The multiple color recognition sensors 240 on the detection beam 230 are arranged in sequence along the length direction of the detection gap. The light source assembly 210 below the detection gap is turned on, and the light emitted by the light source assembly 210 forms different colors after passing through the detection gap. The multiple color recognition sensors 240 recognize the color of the light and send it to the controller. The controller determines the gap value of each position of the detection gap according to the color signal value and displays it through the display screen 350, and finally obtains the straightness of the gap between the fixed roller 400 and the movable roller 500. A roller straightness detection system provided by the present invention can replace manual straightness detection of two rollers, greatly reducing the detection error.

[0048] It is worth noting that the color recognition sensor 240 is an RGB color recognition sensor 240, which is a sensor that recognizes various colors by changing the three color channels of red (R), green (G), and blue (B) and their superposition. The size of the detection gap is judged according to the color of the light transmission, so as to obtain the straightness of the two rollers. Specifically, if the gap is greater than 2.5μm, the light transmission color is white light; when the gap is 1-2μ, the light transmission color is red light; when the gap is 1μm, the light transmission color is blue light; when the gap is less than 1μm, the light transmission color is purple light; when the gap is less than 0.5μm, it is not light-transmitting.

[0049] Specifically, the number of color recognition sensors 240 is three, one in the middle of the detection beam 230 and one on each side of the detection beam 230, which can fully cover the detection gap and avoid detection blind spots. In addition, when the axial lengths of the fixed roller 400 and the movable roller 500 are long, the number of color recognition sensors 240 can also be appropriately increased, which will not be repeated here.

[0050] In addition, the two sides of the adjustment frame are respectively provided with lifting rods 220, and the detection beam 230 is connected to the upper ends of the two lifting rods 220. Among them, the lifting rod 220 is an integral sleeve structure, and the overall damping lifting can be achieved by pulling the sleeve, thereby achieving the purpose of adjusting the height of the detection beam 230.

[0051] A light-transmitting plate 250 is arranged below the detection beam 230. The light-transmitting plate 250 is located directly above the detection gap. The light-transmitting plate 250 is white. The length of the light-transmitting plate 250 can completely cover the axial length of the loading roller. The middle area of ​​the width of the light-transmitting plate 250 is aligned with the detection gap, and can effectively collect the light from below the fixed roller 400 and the movable roller 500 after passing through the detection gap.

[0052] Specifically, the light source assembly 210 includes a light source bracket and a lamp tube installed on the light source bracket. The lamp tube is arranged below the detection gap along the length direction. The length direction of the lamp tube can completely cover the length direction of the detection gap. The lamp tube is a fluorescent lamp and emits white light that passes through the detection gap. The size of the detection gap determines the color of the light after passing through the detection gap.

[0053] The upper end surface of the support seat 120 is provided with a slide rail 150 along the length direction, and the lower end of the mobile support 140 is provided with a support slider 160, and the support slider 160 is slidably provided on the slide rail 150. The upper end surface of the support seat 120 is close to one end of the mobile support 140 and is provided with a first linear drive mechanism 170, which is electrically connected to the alarm light 340 through the controller, and the first linear drive mechanism 170 is connected to the mobile support 140, and is used to drive the mobile support 140 to slide along the length direction of the slide rail 150 to approach the fixed support 130. The first linear drive mechanism 170 includes a screw transmission mechanism and a servo motor. The servo motor provides power and precise displacement control for the screw transmission mechanism. The screw of the screw transmission mechanism penetrates the movable support 140 and is threaded. Under the sliding limit of the support slider 160 and the slide rail 150, the servo motor drives the screw of the screw transmission mechanism to rotate, thereby driving the movable roller 500 to approach or move away from the fixed roller 400 through the movable support 140, so as to adjust the relative position of the movable roller 500 and the fixed roller 400. With the above design, the device can be applied to the detection of rollers with different roller diameters. In addition, in order to match the detection of rollers with different roller diameters, an adjusting slider 260 is installed at the bottom of the adjusting frame. The adjusting slider 260 is slidably arranged on the slide rail 150. When the roller diameter of the replaced roller increases, the adjusting frame slides in the direction away from the fixed support 130 through the adjusting slider 260; when the roller diameter of the replaced roller decreases, the adjusting frame slides in the direction close to the fixed support 130 through the adjusting slider 260. The servo motor is electrically connected to the controller, the servo motor sends a displacement value signal to the controller, the controller receives the displacement value signal, and when the displacement value of the movable bracket reaches a predetermined value, the controller controls the alarm light 340 to send out an alarm signal.

[0054] In addition, a second linear drive mechanism 180 is provided on the upper end surface of the workbench 110, and the second linear drive mechanism 180 is connected to any support seat 120, and is used to drive any support seat 120 away from or close to another support seat 120. The second linear drive mechanism 180 includes a screw transmission mechanism and a rotating hand wheel, the screw of the screw transmission mechanism passes through any support seat 120 and is threadedly matched, the support seat 120 is slidably matched with the work platform, and the rotating hand wheel drives the screw to rotate, thereby driving the support seat 120 away from another support seat 120. With the above design, the device can be applicable to the detection requirements of rollers with different axial lengths.

[0055] See also Figure 3A displacement sensor 190 is installed on one side of the mobile support 140 close to the fixed support 130. The displacement sensor 190 is electrically connected to the controller and is used to detect the displacement of the mobile support 140. The displacement sensor 190 can detect the displacement distance of the mobile support 140 or the distance relative to the fixed support 130, and send a signal to the controller. After receiving the signal, the controller controls the alarm light 340 to alarm and sends a corresponding control signal to the servo motor of the first linear drive mechanism 170.

[0056] Two rotating wheels 1100 are disposed on the top of the fixed support 130 and the movable support 140. The two rotating wheels 1100 are disposed at intervals to support the shaft ends of the movable roller 500 and the shaft ends of the fixed roller 400. The stability of the movable roller 500 and the fixed roller 400 can be ensured. At the same time, the two rotating wheels 1100 cooperate with the shaft ends of the movable roller 500 and the shaft ends of the fixed roller 400 to realize the rotation of the movable roller 500 and the fixed roller 400.

[0057] The outer side of any movable support 140 is respectively provided with a rotating motor 1120 and a tensioning frame, the rotating motor 1120 is electrically connected to the controller, the driving end of the rotating motor 1120 is provided with a driving wheel 1130, the tensioning frame is provided with a tensioning wheel 1180, the shaft end of the movable roller 500 close to the rotating motor 1120 is provided with a driven wheel 1190, the driving wheel 1130, the tensioning wheel 1180 and the driven wheel 1190 are wound with a synchronous belt 1200, and the tensioning wheel 1180 can be close to or away from the rotating motor 1120, so as to adjust the tightness of the synchronous belt 1200 through the tensioning wheel 1180. The tensioning frame moves in a direction away from the rotating motor 1120, thereby tightening the synchronous belt 1200. After measuring the straightness of the detection gap between the fixed roller 400 and the movable roller 500, the rotating motor 1120 is started, and the driving wheel 1130 of the rotating motor 1120 drives the synchronous belt 1200 to rotate, thereby driving the movable roller 500 to rotate through the driven wheel 1190. The movable roller 500 rotates 90° once and then stops, and the straightness is tested again, and then rotates 90° again for measurement until the measurement of the entire circumference of the movable roller 500 is completed. After the measurement of the circumference of the movable roller 500 is completed, the positions of the roller 500 and the fixed roller 400 can be moved relative to each other, and the above process can be repeated to complete the straightness detection of different circumferential areas of the two rollers.

[0058] Specifically, the tensioning frame includes an adjustment plate 1140 and a tensioning shaft 1150. The adjustment plate 1140 is provided with an elongated hole 1160. An adjustment screw 1170 connected to the outer side of the movable support 140 is provided through the elongated hole 1160. The tensioning shaft 1150 is vertically fixed to the outer side of the adjustment plate 1140, and the tensioning wheel 1180 is rotatably mounted on the end of the tensioning shaft 1150. An adjustment block is fixed to the side of the adjustment plate 1140 close to the rotating motor 1120. An adjustment rod is provided through a transverse thread in the adjustment block. The adjustment rod can be rotated to push the adjustment plate 1140 to move away from the rotating motor 1120. At this time, the elongated hole 1160 of the adjustment plate 1140 moves under the limit of the adjustment screw 1170. The adjustment plate 1140 tensions the synchronous belt 1200 through the tensioning shaft 1150 and the tensioning wheel 1180. When the synchronous belt 1200 needs to be replaced or repaired, the synchronous belt 1200 can be loosened by rotating the adjustment rod in the reverse direction, so that it is easy to disassemble.

[0059] Specifically, the mounting frame includes a telescopic rod 310 and a rotating arm 320 arranged longitudinally, the lower end of the telescopic rod 310 is connected to one side of the workbench 110, one end of the rotating arm 320 is rotatably connected to the upper end of the telescopic rod 310, and the other end of the rotating arm 320 extends downward and is connected to the control box 330. The telescopic rod 310 can adjust the height direction of the control box 330, and the rotating arm 320 can adjust the horizontal angle of the control box 330, so that the control box 330 reaches the optimal height and angle for easy operation.

[0060] See also Figure 4 and Figure 5 Based on the same inventive concept, the present invention also provides a roller straightness detection method, using the above roller straightness detection system, comprising the following steps:

[0061] S1: Preparation stage:

[0062] The two rollers are defined as a movable roller 500 and a fixed roller 400 , and both ends of the movable roller 500 are supported on movable supports 140 on two support seats 120 , and both ends of the fixed roller 400 are supported on fixed seats on two support seats 120 .

[0063] S2: Approach phase:

[0064] S2.1: The first linear drive mechanism 170 drives the movable support 140 to move to the initial position P0, and the alarm light 340 indicates a first alarm color, which is yellow, that is, the alarm light 340 lights up yellow.

[0065] S2.2: The first linear drive mechanism 170 drives the movable support 140 to quickly move toward the fixed support 130 , and the two displacement sensors 190 on the two movable supports 140 detect the distance value from the fixed support 130 in real time.

[0066] S2.3: When the displacement sensor 190 detects that the distance value to the fixed support 130 reaches a predetermined value, the servo motor of the first linear drive mechanism 170 stops driving the movable support 140, and the movable support 140 stops at the predetermined position P1. The alarm light 340 prompts a second alarm color, which is red, that is, the alarm light 340 lights up red.

[0067] S3: Detection phase:

[0068] S3.1: Turn on the light source assembly 210, adjust the detection beam 230 to be located directly above the detection gap, the servo motor of the first linear drive mechanism 170 drives the movable support 140 to slowly move toward the fixed support 130, and the three color recognition sensors 240 detect the color of the light emitted by the light source assembly 210 and passing through the detection gap, and send it to the controller synchronously;

[0069] S3.2: The controller receives the signals sent by the three color recognition sensors 240 and performs a straightness analysis of the roll gap. If at least one color recognition sensor 240 does not detect light or more than two color recognition sensors 240 detect purple light at the same time, the servo motor of the first linear drive mechanism 170 is stopped from continuing to drive the movable support 140, and the display screen 350 displays the roll gap straightness information and saves it in the controller. If the three color recognition sensors 240 do not meet the above requirements (at least one color recognition sensor 240 does not detect light or more than two color recognition sensors 240 detect purple light at the same time), the servo motor of the first linear drive mechanism 170 continues to drive the movable support 140 to move slowly toward the fixed support 130, and repeats steps S3.1-S3.2 until the requirements are met. At this time, a detection of the detection gap is completed, and the number of different areas that need to be detected on the two rollers is set to i times.

[0070] S3.3: After synchronously rotating the movable roller 500 and the fixed roller 400 to a preset angle a, where a=180° / n, if i<n, the alarm light 340 lights up yellow, and steps S2.1 to S3.2 are repeated. The number of inspections of different areas of the two rollers is not less than n times, until i≥n, it means that the straightness inspection of the two rollers has been completed, and the servo motor of the first linear drive mechanism 170 drives the movable support 140 to move to the initial position P0, the alarm light 340 lights up green, and the inspection stops.

[0071] The beneficial effect of the roller straightness detection method provided by the present invention is that: compared with the prior art, the fixed roller 400 and the movable roller 500 are placed on the fixed support 130 and the movable support 140 respectively in the preparation stage, and the movable support 140 is brought close to the fixed support 130 in the approach stage, so that the movable roller 500 and the fixed roller 400 reach the predetermined position. Finally, in the detection stage, the multiple color recognition sensors 240 recognize the color of the light passing through the detection gap and send it to the controller. The controller determines the gap value of each position of the detection gap according to the color signal value and displays it through the display screen 350. Finally, the straightness of the gap between the fixed roller 400 and the movable roller 500 is obtained, which greatly improves the accuracy of the straightness detection and reduces the detection error.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A roller straightness detection system, characterized in that: include: A roller supporting mechanism, the roller supporting mechanism comprising a workbench (110) and two support seats (120), the two support seats (120) being arranged at intervals on the upper end surface of the workbench (110) from left to right, the upper end surface of the support seat (120) being respectively provided with a fixed support seat (130) and a movable support seat (140) from back to front, the movable support seat (140) being slidably arranged on the support seat (120) along the front-rear direction, the fixed supports (130) on the two support seats (120) being used to jointly support a fixed roller (400), the movable supports (140) on the two support seats (120) being used to jointly support a movable roller (500), and a detection gap being formed between the fixed roller (400) and the movable roller (500); A detection mechanism, the detection mechanism comprising a light source assembly (210), an adjustment frame and a plurality of color recognition sensors (240), the light source assembly (210) being arranged on the upper end surface of the workbench (110) and being located between the two support seats (120), the light source assembly (210) being located directly below the detection gap, the adjustment frame being arranged across the two support seats (120) and the upper end of the adjustment frame being provided with a detection beam (230), the detection beam (230) being located directly above the detection gap, and the length direction of the detection beam (230) being consistent with the length direction of the detection gap, a plurality of color recognition sensors (240) being arranged on the detection beam (230) in sequence and at intervals along the length direction, the color recognition sensor (240) being a sensor for identifying colors by changes in the three color channels of red, green and blue and their mutual superposition, and judging the size of the detection gap according to the light-transmitting color, thereby obtaining the straightness of the two rollers; A control mechanism, the control mechanism comprising a mounting frame and a control box (330), the mounting frame being arranged on one side of the workbench (110) and extending upward, the control box (330) being installed on the top of the mounting frame, the control box (330) having a built-in controller, an alarm light (340) being arranged on the top of the control box (330), a display screen (350) being provided on the front side of the control box (330), and the controller being electrically connected to a plurality of the color recognition sensors (240), the alarm lights (340) and the display screen (350).

2. A roller straightness detection system as claimed in claim 1, characterized in that: A light-transmitting plate (250) is arranged below the detection crossbeam (230), the light-transmitting plate (250) is located directly above the detection gap, and the color recognition sensor (240) is used to sense the color of light passing through the light-transmitting plate (250).

3. A roller straightness detection system as claimed in claim 1, characterized in that: The upper end surface of the support seat (120) is provided with a slide rail (150) along the length direction, and the lower end of the movable support (140) is provided with a support slider (160), and the support slider (160) is slidably arranged on the slide rail (150). The upper end surface of the support seat (120) is close to one end of the movable support (140) and is provided with a first linear drive mechanism (170), and the first linear drive mechanism (170) is electrically connected to the alarm light (340) through the controller, and the first linear drive mechanism (170) is connected to the movable support (140) and is used to drive the movable support (140) to slide along the length direction of the slide rail (150) to approach the fixed support (130).

4. A roller straightness detection system as claimed in claim 3, characterized in that: A second linear drive mechanism (180) is disposed on the upper end surface of the workbench (110), and the second linear drive mechanism (180) is connected to any one of the support seats (120) and is used to drive any one of the support seats (120) to move away from or closer to another support seat (120).

5. A roller straightness detection system as claimed in claim 3, characterized in that: A displacement sensor (190) is installed on a side of the movable support (140) close to the fixed support (130); the displacement sensor (190) is electrically connected to the controller; and the displacement sensor (190) is used to detect the displacement of the movable support (140).

6. A roller straightness detection system as claimed in claim 1, characterized in that: Two rotating wheels (1100) are arranged on the top of each of the fixed support (130) and the movable support (140), and the two rotating wheels (1100) are arranged at intervals to support the shaft ends of the movable roller (500) and the shaft ends of the fixed roller (400).

7. A roller straightness detection system as claimed in claim 1, characterized in that: A rotating motor (1120) and a tensioning frame are respectively arranged on the outer side surface of any of the movable supports (140); the rotating motor (1120) is electrically connected to the controller; a driving wheel (1130) is arranged at the driving end of the rotating motor (1120); a tensioning wheel (1180) is arranged on the tensioning frame; a driven wheel (1190) is arranged at the shaft end of the movable roller (500) on the side close to the rotating motor (1120); a synchronous belt (1200) is wound around the driving wheel (1130), the tensioning wheel (1180) and the driven wheel (1190); the tensioning wheel (1180) can be close to or away from the rotating motor (1120) so as to adjust the tightness of the synchronous belt (1200) through the tensioning wheel (1180).

8. A roller straightness detection system as claimed in claim 7, characterized in that: The tensioning frame includes an adjustment plate (1140) and a tensioning shaft (1150), the adjustment plate (1140) is provided with a long hole (1160), an adjustment screw (1170) connected to the outer side surface of the movable support (140) is provided through the long hole (1160), the tensioning shaft (1150) is vertically fixed to the outer side surface of the adjustment plate (1140), and the tensioning wheel (1180) is rotatably installed on the end of the tensioning shaft (1150).

9. A roller straightness detection system as claimed in claim 1, characterized in that: The mounting frame comprises a telescopic rod (310) and a rotating arm (320) arranged longitudinally, wherein the lower end of the telescopic rod (310) is connected to one side of the workbench (110), one end of the rotating arm (320) is rotatably connected to the upper end of the telescopic rod (310), and the other end of the rotating arm (320) extends downward and is connected to the control box (330).

10. A method for detecting roller straightness, characterized in that: The roller straightness detection system as claimed in claim 5 is used, comprising the following steps: S1: Preparation stage: The two rollers are defined as a movable roller (500) and a fixed roller (400), and both ends of the movable roller (500) are supported on movable supports (140) on two support seats (120), and both ends of the fixed roller (400) are supported on fixed seats on the two support seats (120); S2: Approach phase: S2.1: the first linear drive mechanism (170) drives the movable support (140) to move to the initial position P0, and the alarm light (340) indicates a first alarm color; S2.2: the first linear drive mechanism (170) drives the movable support (140) to move rapidly toward the fixed support (130), and the displacement sensor (190) detects the distance value from the fixed support (130) in real time; S2.3: When the displacement sensor (190) detects that the distance value from the fixed support (130) reaches a predetermined value, the first linear drive mechanism (170) stops driving the movable support (140), the movable support (140) stops at a predetermined position P1, and the alarm light (340) indicates a second alarm color; S3: Detection phase: S3.1: Turn on the light source assembly (210), adjust the detection beam (230) to be located directly above the detection gap, drive the movable support (140) to slowly move toward the fixed support (130) by the first linear drive mechanism (170), and detect the color of the light emitted by the light source assembly (210) and passing through the detection gap by a plurality of color recognition sensors (240), and send the color to the controller synchronously; S3.2: The controller receives signals sent by the plurality of color recognition sensors (240) and performs a straightness analysis of the roll gap; if at least one color recognition sensor (240) does not detect light or two or more color recognition sensors (240) detect purple light at the same time, the first linear drive mechanism (170) is stopped to continue driving the movable support (140), and the display screen (350) displays the roll gap straightness information and stores it in the controller; S3.3: After synchronously rotating the movable roller (500) and the fixed roller (400) at a preset angle a, where a=180° / n, steps S2.1 to S3.2 are repeated n-1 times, and the display screen (350) sequentially displays the roller gap straightness information and stores it in the controller respectively.

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