Steel sheet film-coating deviation correcting apparatus
By capturing images of the film edge and calculating and adjusting the vector, the drive mechanism is controlled to move the roll material roller. This solves the problem of low detection accuracy of infrared sensors, achieves precise alignment between the film edge and the steel plate edge, and improves the accuracy of the coating equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FOSHAN BAOSTEEL STAINLESS STEEL TRADING CO LTD
- Filing Date
- 2024-01-25
- Publication Date
- 2026-06-02
AI Technical Summary
In existing steel plate coating equipment, the infrared sensor's accuracy in detecting the edge of the film is not high, resulting in the film edge not being accurately aligned with the steel plate edge.
An image of the film edge is captured by an imaging device, and a vector is calculated and adjusted by a processing device. The drive mechanism is then controlled to move the roll material roller, ensuring that the film edge is precisely aligned with the steel plate edge.
This achieved accurate alignment between the film edge and the steel plate edge, improving the coating precision.
Smart Images
Figure CN117775384B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of coating and correction technology, and particularly to a coating and correction device for steel plates. Background Technology
[0002] Steel plates may oxidize or be scratched during processing and transportation, so a protective film needs to be applied to their surface before transport. Currently, laminating equipment unwinds the film roll and covers the steel plate surface. Furthermore, to address the issue of misalignment between the film roll edge and the steel plate edge, the laminating equipment is equipped with a correction device. This device uses an infrared sensor to detect the film edge and a drive mechanism to move the film roll, keeping the film edge centered on the infrared sensor, thus ensuring alignment between the film edge and the steel plate edge. However, the accuracy of infrared sensor edge detection is not high. The distance the drive mechanism moves the film roll is directly related to the infrared sensor's response time and detection accuracy, leading to inaccurate alignment between the film edge and the steel plate edge. Summary of the Invention
[0003] The purpose of this invention is to provide a steel plate coating and correction device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.
[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows:
[0005] A steel plate coating and alignment device, comprising:
[0006] support;
[0007] A roll of film, which is slidably connected to the support from left to right, is used to unwind film;
[0008] A conveying roller, connected to the support, conveys the film in a back-to-back direction;
[0009] An imaging device that captures an image of the edge of the film;
[0010] The image capture device sends the image to the processing device, the processing device sets a standard line extending in the front-back direction in the image, and the processing device calculates the distance and direction of the rear end of the film edge in the image relative to the standard line to obtain an adjustment vector;
[0011] A drive mechanism, which is connected to the bracket and the roll material;
[0012] The controller controls the drive mechanism to move the roll material roller according to the adjustment vector.
[0013] The beneficial effects of this invention are as follows: After the image of the edge of the film is captured by the imaging device, the processing device calculates the distance and direction from the rear end of the film edge to the standard line in the image to obtain the adjustment vector. The controller controls the drive mechanism according to the adjustment vector, so that the drive mechanism drives the roll roller to move according to the adjustment vector, thereby making the film output by the conveyor roller accurately adjusted in position according to the adjustment vector, making the direction and distance of the film edge movement more precise, and ensuring that the edge of the film is accurately aligned with the edge of the steel plate.
[0014] As a further improvement to the above technical solution, the time taken for the processing device to send the adjustment vector to the controller is equal to the time taken for the film to move from the rear end of the shooting area of the shooting device to the middle.
[0015] As a further improvement to the above technical solution, the time taken for the film to move from the center of the shooting area of the shooting device to the front end is equal to the time taken for the driving mechanism to drive the roll material roller.
[0016] As a further improvement to the above technical solution, the conveying roller is slidably connected to the bracket, and the steel plate coating and correction device also includes a transmission component, which connects the roll roller and the conveying roller.
[0017] As a further improvement to the above technical solution, there are at least two conveying rollers, which are distributed vertically at intervals, and the transmission component is connected to the two conveying rollers.
[0018] As a further improvement to the above technical solution, the controller sets a tolerance value. If the length of the adjustment vector is greater than the tolerance value, it proves that the edge of the film is skewed. The controller counts the number of times the edge of the film is skewed.
[0019] As a further improvement to the above technical solution, the processing device sequentially sends multiple adjustment vectors to the controller. The controller compares the vector difference between any two sequentially adjacent adjustment vectors. The controller sets a limit value. If the length of the vector difference is greater than the limit value, it proves that there is a gap at the edge of the film. The controller controls the drive mechanism to remain stationary and counts the number of gaps.
[0020] As a further improvement to the above technical solution, the shooting device is located in front of the conveying roller.
[0021] As a further improvement to the above technical solution, the shooting device includes:
[0022] A camera is positioned above the thin film;
[0023] A black light-absorbing plate is disposed below the film;
[0024] A ring-shaped light source is arranged around the periphery of the camera.
[0025] As a further improvement to the above technical solution, the driving mechanism is an electric push rod. Attached Figure Description
[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0027] Figure 1 This is a side view schematic diagram of an embodiment of the steel plate coating and correction device provided by the present invention;
[0028] Figure 2 This is a top view schematic diagram of an embodiment of the steel plate coating and correction device provided by the present invention;
[0029] Figure 3 This is a schematic diagram of one embodiment of the steel plate coating and correction device provided by the present invention.
[0030] 10. Image; 11. Standard line; 100. Support; 200. Roller; 300. Film; 310. Notch; 400. Conveyor roller; 500. Imaging device; 510. Camera; 520. Black light-absorbing plate; 530. Ring light source; 600. Drive mechanism; 700. Transmission component. Detailed Implementation
[0031] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.
[0032] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.
[0033] In the description of this invention, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.
[0034] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.
[0035] Reference Figures 1 to 3 The steel plate coating and correction device of the present invention is illustrated in the following embodiments:
[0036] The steel plate coating and correction equipment includes a support frame 100, a roll roller 200, a conveyor roller 400, a shooting device 500, a processing device, a drive mechanism 600, and a controller.
[0037] The roll 200 is slidably connected to the support 100. The roll 200 can slide left and right relative to the support 100. The roll 200 is fitted with a roll of film 300. After the roll 200 rotates, the film 300 is unwound.
[0038] The drive mechanism 600 is connected to the bracket 100. The drive direction of the drive mechanism 600 is left and right. The drive mechanism 600 is connected to the roll material roller 200. The drive mechanism 600 drives the roll material roller 200 to move left and right, so that the edge of the film 300 is adjusted in the left and right direction.
[0039] The conveyor roller 400 is connected to the support 100, and the film 300 passes around the conveyor roller 400. The conveyor roller 400 conveys the film 300 from back to front.
[0040] The imaging device 500 is connected to the bracket 100. The imaging device 500 is located above or below the edge of the film 300. The imaging device 500 is used to capture the edge of the film 300 and obtain an image 10.
[0041] The processing device communicates with the imaging device 500. The imaging device 500 sends the captured image 10 to the processing device in real time. The processing device processes the image 10 and sets a standard line 11 extending in the front-back direction in the image 10. Since the position of the imaging device 500 remains unchanged, the standard line 11 in the image 10 can correspond to the theoretical position of the edge of the film 300 in the imaging area of the imaging device 500. The theoretical position of the edge of the film 300 is accurately aligned with the edge of the steel plate.
[0042] The imaging device 500 sends a real-time image 10 to the processing device. The imaging device 500 is positioned directly facing the edge of the film 300, and since the film 300 is made of a different material than other objects, the edge of the film 300 is clearly displayed in the image 10. The film 300 is easily distinguishable from other objects in the image 10. The processing device is a common image processing device that can identify the edge of the film 300 in the image 10, and then calculate the distance and direction of the rear end of the film 300 edge relative to the standard line 11 to obtain the adjustment vector. For example... Figure 3In the figure, the rear end of the edge of the thin film 300 is located to the left of the standard line 11. The adjustment vector is the distance between the rear end of the edge of the thin film 300 and the standard line 11, and the direction of the adjustment vector is from the rear end of the edge of the thin film 300 to the rear end of the standard line 11.
[0043] After the processing device calculates the adjustment vector, it sends the adjustment vector to the controller. The controller controls the drive mechanism 600 according to the adjustment vector. The drive mechanism 600 drives the roll 200 and the film 300 to move, so that the edge of the film 300 moves according to the adjustment vector, thereby making the edge of the film 300 coincide with the standard line 11, thus ensuring that the edge of the film 300 is aligned with the edge of the steel plate.
[0044] The controller controls the drive mechanism 600 according to the adjustment vector, so that the film 300 output by the conveyor roller 400 is accurately adjusted in position according to the adjustment vector, making the direction and distance of the movement of the edge of the film 300 more precise, and ensuring that the edge of the film 300 is accurately aligned with the edge of the steel plate.
[0045] In some embodiments, the time taken for the processing device to send the adjustment vector to the controller is equal to the time taken for the thin film 300 to move from the back end of the image 10 to the middle.
[0046] After the controller receives the adjustment vector and controls the drive mechanism 600, the thin film 300 moves from the rear end of the image 10 to the middle of the image 10. The thin film 300 moves along the conveying direction before the drive mechanism 600 is activated, so as to avoid the drive mechanism 600 interfering with the processing device's analysis and processing of the image 10.
[0047] In some embodiments, the time taken for the film 300 to move from the center to the front end of the image 10 is equal to the time taken for the controller to control the drive mechanism 600 to drive the roll roller 200.
[0048] When the film 300 moves forward from the center of the image 10, the drive mechanism 600 drives the roll roller 200 and the film 300 to adjust their positions. It can be observed from the image 10 that the edge of the film 300 located in the middle is pulled by an external force and shifts towards the standard line 11 during the forward movement. This makes it easier to observe the process of adjusting the position of the film 300 in the image 10, ensuring that the edge of the film 300 moves towards the theoretical position.
[0049] In some embodiments, the conveying roller 400 slides in the left-right direction, and the steel plate coating and correction device further includes a transmission component 700, which connects the conveying roller 400 to the roll material roller 200.
[0050] The conveyor roller 400 and the roll material roller 200 are linked by the transmission component 700. The roll material roller 200 and the conveyor roller 400 are synchronized, so that the film 300 of the roll material roller 200 and the film 300 of the conveyor roller 400 move to the left or right synchronously, reducing the stretching of the film 300.
[0051] In some embodiments, two conveying rollers 400 are provided, which are arranged one above the other, and the transmission member 700 is connected to the two conveying rollers 400.
[0052] Two conveyor rollers 400 are used to tension the film 300. After the two conveyor rollers 400 are adjusted in position with the transmission component 700, they keep the film 300 taut to prevent the film 300 from loosening.
[0053] In some embodiments, the controller sets a tolerance value. When the length of the adjustment vector is greater than the tolerance value, it indicates that the edge of the film 300 is skewed. The controller counts the number of times the edge of the film 300 is skewed.
[0054] The number of times the edge of film 300 is skewed is counted to evaluate the quality of film 300 delivered by the supplier. The fewer times the edge of film 300 is skewed, the straighter the edge of film 300 is.
[0055] In some embodiments, since the image 10 is transmitted from the imaging device 500 to the processing device, the processing device needs time to receive the image 10, analyze the image 10, and perform calculations. Therefore, the processing device sends an adjustment vector at unit time intervals. Thus, the processing device sends multiple adjustment vectors to the controller in chronological order. The controller compares the vector difference between any two sequentially adjacent adjustment vectors. The controller also sets a limit value. When the length of the vector difference is greater than the limit value, since the film 300 is generally cut by a slitting machine to form a straight edge, if a large distance change occurs between two points before and after the film 300, it proves that there is a gap 310 on the edge of the film 300. At this time, the drive mechanism 600 remains stationary.
[0056] To prevent the drive mechanism 600 from causing the film 300 to change position drastically and affecting the coating effect of the film 300, the controller counts the number of gaps 310 appearing on the edge of the film 300 to evaluate the quality of the film 300 delivered by the supplier.
[0057] In some embodiments, the imaging device 500 is located in front of the conveyor roller 400.
[0058] The conveyor roller 400 conveys the film 300 from back to front to the imaging device 500. After the imaging device 500 captures the image 10, the controller causes the drive mechanism 600 to move the roll roller 200 according to the calculation result of the processing device, causing the film 300 on the conveyor roller 400 to shift accordingly. The effect of the shift is reflected in the image 10 captured by the imaging device 500.
[0059] In some embodiments, the shooting device 500 includes a camera 510, a black light-absorbing plate 520, and a ring light source 530. The camera 510 and the black light-absorbing plate 520 are located on the upper and lower sides of the film 300, respectively. Illumination light is emitted downward through the ring light source 530 around the camera 510, and the black light-absorbing plate 520 absorbs the light.
[0060] The thin film 300 reflects the light emitted by the ring light source 530 above the black light-absorbing plate 520, making the edges of the thin film 300 clearly visible in the image captured by the camera 510.
[0061] In some embodiments, the drive mechanism 600 is an electric push rod.
[0062] The electric actuator has a fast response speed, ensuring that the controller can control the drive mechanism 600 to drive the roll 200 more quickly.
[0063] Specifically, refer to Figures 1 to 3 As shown, the steel plate coating and correction equipment includes a support 100, a roll roller 200, a conveyor roller 400, a shooting device 500, a processing device, a drive mechanism 600, a controller, and a transmission component 700.
[0064] The roll material roller 200 is slidably mounted on the bracket 100. There are two conveyor rollers 400, both of which are slidably mounted on the bracket 100. The two conveyor rollers 400 are arranged vertically, and the roll material roller 200 is located behind the two conveyor rollers 400.
[0065] The film 300 is fitted outside the roll roller 200. The film 300 passes over two conveyor rollers 400 from bottom to top, and the conveyor rollers 400 convey the film 300 from back to front.
[0066] The transmission component 700 connects the roll material roller 200 and the two conveyor rollers 400, and causes the roll material roller 200 and the two conveyor rollers 400 to move synchronously to the left or right. In this embodiment, the transmission component 700 is a rod, with its front end connected to the right end of the two conveyor rollers 400 and its rear end connected to the right end of the roll material roller 200.
[0067] The drive mechanism 600 is located at the right end of the bracket 100. The drive mechanism 600 is an electric push rod. The drive mechanism 600 is connected to the roll material roller 200. The drive mechanism 600 pushes the roll material roller 200 to move left and right and drives the two conveyor rollers 400.
[0068] The shooting device 500 is mounted on the bracket 100 and is located in front of the conveyor roller 400. The shooting device 500 includes a camera 510, a black light-absorbing plate 520, and a ring light source 530. The camera 510 and the black light-absorbing plate 520 are located on the upper and lower sides of the film 300, respectively. The ring light source 530 is arranged around the periphery of the camera 510 and emits illumination light downward.
[0069] The imaging device 500 is connected to and communicates with the processing device via a cable, and the imaging device 500 sends the captured image 10 to the processing device.
[0070] The imaging device 500 sends the captured image 10 to the processing device in real time. The processing device processes the image 10 and sets a standard line 11 extending in the front-back direction in the image 10.
[0071] Since the position of the shooting device 500 remains unchanged, the standard line 11 in the image 10 can correspond to the theoretical position of the edge of the film 300 in the shooting area of the shooting device 500, and the theoretical position of the edge of the film 300 is accurately aligned with the edge of the steel plate.
[0072] The imaging device 500 sends a real-time image 10 to the processing device. The imaging device 500 is positioned directly facing the edge of the film 300, and since the film 300 is made of a different material than other objects, the edge of the film 300 is clearly displayed in the image 10. The film 300 is easily distinguishable from other objects in the image 10. The processing device is a common image processing device that can identify the edge of the film 300 in the image 10, and then calculate the distance and direction of the rear end of the film 300 edge relative to the standard line 11 to obtain the adjustment vector. For example... Figure 3 In the figure, the rear end of the edge of the thin film 300 is located to the left of the standard line 11. The adjustment vector is the distance between the rear end of the edge of the thin film 300 and the standard line 11, and the direction of the adjustment vector is from the rear end of the edge of the thin film 300 to the rear end of the standard line 11.
[0073] The controller and the processing unit are connected and communicate via cable. The processing unit sends the calculated adjustment vector to the controller, and the controller controls the drive mechanism 600 to move the roll material roller 200 and the two conveyor rollers 400 according to the adjustment vector.
[0074] By adjusting the conveying speed of the film 300 and the driving speed of the drive mechanism 600, the intermediate time taken for the film 300 to move from the rear end of the image 10 captured by the imaging device 500 is equal to the time taken for the processing device to send the adjustment vector to the controller.
[0075] By adjusting the conveying speed of the film 300 and the driving speed of the drive mechanism 600, the time taken for the film 300 to move from the middle of the image 10 captured by the imaging device 500 to the front end is equal to the time taken for the drive mechanism 600 to drive the roll roller 200 to move.
[0076] The controller sets tolerance and limit values. When the controller receives the adjustment vector sent by the processing device, it first compares the length of the adjustment vector with the tolerance value. If the length of the adjustment vector is greater than the tolerance value, it proves that the distance between the edge of the film 300 and the standard line 11 is large, that is, the edge of the film 300 is skewed. The controller counts the number of times the edge of the film 300 is skewed in order to evaluate the quality of the film 300.
[0077] The processing device sends multiple adjustment vectors to the controller over a period of time, and the controller calculates the vector difference between any two sequentially adjacent adjustment vectors.
[0078] If the length of the vector difference is greater than the limit value, it proves that there is a large distance difference between the edges of the film 300 and the two adjacent sampling points.
[0079] Since the film 300 is generally cut by a slitting machine to form the edge, the large distance difference between two adjacent sampling points indicates that there is a gap 310 on the edge of the film 300. After the controller detects the gap 310, it controls the drive mechanism 600 to remain stationary, and the controller counts the number of gaps 310 to evaluate the quality of the film 300.
[0080] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A steel plate coating and alignment device, characterized in that: include: support; A roll of film, which is slidably connected to the support from left to right, is used to unwind film; A conveying roller, connected to the support, conveys the film in a back-to-back direction; An imaging device that captures an image of the edge of the film; The image capture device sends the image to the processing device, the processing device sets a standard line extending in the front-back direction in the image, and the processing device calculates the distance and direction of the rear end of the film edge in the image relative to the standard line to obtain an adjustment vector; A drive mechanism, which is connected to the bracket and the roll material; A controller that controls the drive mechanism to move the roll material roller according to the adjustment vector; The time it takes for the processing device to send the adjustment vector to the controller is equal to the time it takes for the film to move from the rear end of the shooting area of the shooting device to the middle; The time it takes for the film to move from the center of the shooting area of the shooting device to the front end is equal to the time it takes for the drive mechanism to drive the roll material roller; The controller sets a tolerance value. If the length of the adjustment vector is greater than the tolerance value, it proves that the film edge is skewed. The controller counts the number of times the film edge is skewed. The processing device sequentially sends multiple adjustment vectors to the controller. The controller compares the vector difference between any two sequentially adjacent adjustment vectors. The controller sets a limit value. If the length of the vector difference is greater than the limit value, it proves that there is a gap at the edge of the film. The controller controls the drive mechanism to remain stationary and counts the number of gaps.
2. The steel sheet film covering correction apparatus according to claim 1, characterized by: The conveying roller is slidably connected to the bracket from left to right. The steel plate coating and correction device also includes a transmission component, which connects the roll roller and the conveying roller.
3. The steel sheet film covering correction apparatus according to claim 2, characterized by: There are at least two conveying rollers, which are distributed vertically at intervals, and the transmission component is connected to the two conveying rollers.
4. The steel sheet film covering correction apparatus according to claim 1, characterized by: The shooting device is located in front of the conveyor roller.
5. The steel sheet film covering correction apparatus according to claim 1, characterized by: The imaging device includes: A camera is positioned above the thin film; A black light-absorbing plate is disposed below the film; A ring-shaped light source is arranged around the periphery of the camera.
6. The steel sheet film covering correction apparatus according to claim 1, characterized by: The drive mechanism is an electric push rod.