Method for adjusting a stack of steel sheets

Abstract

The application provides a steel plate stacking adjusting method. The method comprises the following steps: collecting first width position information and second width position information of the steel plate in real time in a track in which first side horseshoe rollers and second side horseshoe rollers convey the steel plate along the length; comparing the first width position information and the second width position information, and adjusting the conveying speed of the first side horseshoe rollers and the conveying speed of the second side horseshoe rollers, so that the steel plate is centered during the conveying process; after the steel plate reaches a target position, the first side horseshoe rollers and the second side horseshoe rollers rotate along the circumference, and the steel plate is dropped for stacking. In the adjusting method, the conveying speed of the first side horseshoe rollers and the conveying speed of the second side horseshoe rollers are adjusted based on this, so that the steel plate is adjusted to the middle position, the probability that the steel plate falls on both sides at the same time during the falling process is improved, the probability that the steel plate and the horseshoe rollers are scratched is reduced, and the quality of the steel plate is improved.

Description

Technical Field

[0001] This invention relates to the field of steel plate stacking, and more particularly to a method for adjusting steel plate stacking. Background Technology

[0002] When steel plates produced on a strip steel processing line are stacked, multiple horseshoe rollers lift the plates, and then the rollers rotate to lower them. However, due to equipment wear and tear, the horseshoe rollers often have poor synchronization, causing the steel plates to fall at different speeds. This can result in one side of the plate falling first, followed by the other, leading to scraping between the steel plates and the rollers and affecting the quality of the steel plates. Summary of the Invention

[0003] The main objective of this invention is to provide a method for adjusting steel plate stacking, so as to solve the technical problem that scraping between steel plates and horseshoe rollers is easy to occur in existing steel plate stacking methods.

[0004] To achieve the above objectives, the present invention provides a method for adjusting steel plate stacking, comprising the following steps:

[0005] The distance between the first side horseshoe roller and the second side horseshoe roller is adjusted to the corresponding width of the steel plate, and the first side horseshoe roller and the second side horseshoe roller are symmetrically arranged about the stacking length direction.

[0006] During the trajectory of the steel plate conveyed along the length of the first side horseshoe roller and the second side horseshoe roller, the first width position information of the steel plate and the first side horseshoe roller in the width direction and the second width position information of the steel plate and the second side horseshoe roller in the width direction are collected in real time.

[0007] By comparing the first width position information and the second width position information, the conveying speed of the first side horseshoe roller and the conveying speed of the second side horseshoe roller are adjusted so that the steel plate is centered during the conveying process.

[0008] After the steel plate reaches the target position, the first side horseshoe roller and the second side horseshoe roller rotate circumferentially to put down the steel plate for stacking.

[0009] According to an embodiment of this application, the step of real-time acquisition of the first width position information of the steel plate and the first side horseshoe roller in the width direction, and the second width position information of the steel plate and the second side horseshoe roller in the width direction includes:

[0010] Position images of the first side horseshoe roller, the second side horseshoe roller, and the steel plate are acquired along the height direction.

[0011] The first width position information is obtained by identifying the first distance between each region of the tail of the first side horseshoe roller in the length direction and the steel plate in the position image.

[0012] The second width position information is obtained by identifying the second distance between each region of the tail of the second side horseshoe roller in the length direction and the steel plate in the position image.

[0013] According to an embodiment of this application, the step of comparing the first width position information and the second width position information, and adjusting the conveying speed of the first side horseshoe roller and the second side horseshoe roller to center the steel plate during the conveying process includes:

[0014] Compare the magnitudes of the first distance and the second distance at the same position on the first and second side horseshoe rollers.

[0015] Adjust the conveying speed of the horseshoe roller on the side with the larger value of the first distance and the second distance to be less than the conveying speed of the horseshoe roller on the other side.

[0016] When the steel plates are aligned, adjust the conveying speed of the first side horseshoe roller to be the same as that of the second side horseshoe roller.

[0017] According to the embodiments of this application, in the step of adjusting the conveying speed of the horseshoe roller on the side with the larger of the first distance and the second distance to be less than the conveying speed of the horseshoe roller on the other side:

[0018] Reduce the conveying speed of the first side horseshoe roller and the second side horseshoe roller, and the reduction in conveying speed of the side corresponding to the horseshoe roller with the larger value of the first distance and the second distance is greater than the reduction in conveying speed of the other side horseshoe roller.

[0019] According to an embodiment of this application, when the magnitudes of the first distance and the second distance are inconsistent, the position of the steel plate on the first side horseshoe roller and the second side horseshoe roller in the length direction is recorded.

[0020] According to an embodiment of this application, it further includes:

[0021] Based on the position of the steel plate in the length direction, the conveying speed of the first side horseshoe roller, and the conveying speed of the second side horseshoe roller, determine the corresponding position of the horseshoe roller that needs to be adjusted in the first side horseshoe roller and the second side horseshoe roller.

[0022] According to an embodiment of this application, it further includes:

[0023] After the steel plate reaches the target position, the height data of the steel plate at various points along its length are collected.

[0024] Adjust the height of some or all of the first and second side horseshoe rollers according to the height data so that the steel plate is horizontal in the height direction.

[0025] According to an embodiment of this application, the step of adjusting the height of some or all of the first and second side horseshoe rollers so that the steel plate is horizontal in the height direction includes:

[0026] The height data of the steel plate at the corresponding positions of all the first and second side horseshoe rollers are statistically analyzed.

[0027] Adjust the height of the first and second side horseshoe rollers whose height data is not within the target height range so that the steel plate is horizontal in the height direction.

[0028] According to an embodiment of this application, the method for determining the target height range is as follows:

[0029] The distribution range of the most frequent altitude data among all altitude data is taken as the target altitude range.

[0030] Alternatively, the design height range of the first side horseshoe roller and the design height range of the first side horseshoe roller can be used as the target height range.

[0031] According to an embodiment of this application, it further includes:

[0032] Adjust the horseshoe rollers on the first and second sides whose circumferential rotation speeds are inconsistent.

[0033] In the above-mentioned steel plate stacking adjustment method, during the steel plate conveying process, the position information of the steel plate and the first and second side horseshoe rollers is collected, and the conveying speed of the first and second side horseshoe rollers is adjusted based on this information, so that the steel plate is adjusted to the middle position. This increases the probability that both sides of the steel plate fall at the same time during the falling process, reduces the probability of the steel plate rubbing against the horseshoe rollers, and improves the quality of the steel plate. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a flowchart of a method for adjusting steel plate stacking according to an embodiment of this application.

[0036] The realization of the objective, functional characteristics and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0039] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0040] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0041] This invention provides a method for adjusting steel plate stacking, see [link to relevant documentation]. Figure 1 This includes the following steps:

[0042] S100: Adjust the distance between the first side horseshoe roller and the second side horseshoe roller to the corresponding width of the steel plate. The first side horseshoe roller and the second side horseshoe roller are symmetrically arranged about the stacking length direction.

[0043] Multiple horseshoe rollers are arranged in two rows, facing each other. One row consists of first-side horseshoe rollers, and the other row consists of second-side horseshoe rollers. Each of the first-side and second-side horseshoe rollers includes multiple horseshoe rollers, and each horseshoe roller is connected to a corresponding hydraulic cylinder. The stacking length direction is parallel to the length directions of both the first-side and second-side horseshoe rollers.

[0044] The distance between the first and second side horseshoe rollers can be adjusted using corresponding hydraulic cylinders. When the distance is adjusted to suit the width of the conveying steel plate, the actual width of the two rollers is slightly larger than the width of the steel plate. The steel plate maintains a certain distance from the edges of both the first and second side horseshoe rollers.

[0045] S200: During the trajectory of the first side horseshoe roller and the second side horseshoe roller conveying the steel plate along the length, the first width position information of the steel plate and the first side horseshoe roller in the width direction and the second width position information of the steel plate and the second side horseshoe roller in the width direction are collected in real time.

[0046] In this step, the first and second width position information are acquired in real time during the steel plate conveying process. The purpose is to collect the distances between the two sides of the steel plate and the edges of the first and second side horseshoe rollers. For example, this position information can be acquired through image analysis or distance sensors.

[0047] S300: Compare the first width position information and the second width position information, and adjust the conveying speed of the first side horseshoe roller and the second side horseshoe roller to center the steel plate during the conveying process.

[0048] In this step, by comparing the first width position information and the second width position information, it can be determined whether the steel plate is in the center position. If it is not in the center position, the conveying speed of the first side horseshoe roller and the conveying speed of the second side horseshoe roller can be adjusted so that the steel plate returns to the center position after deviating from the center position, thus completing the centering.

[0049] S400: After the steel plate reaches the target position, the first side horseshoe roller and the second side horseshoe roller rotate circumferentially to put down the steel plate for stacking.

[0050] After the steel plate reaches the target position, for example, a limiting mechanism, such as a limiting plate, is set at the target position. When the steel plate touches the limiting plate, it can no longer move and has reached the target position.

[0051] The first and second side horseshoe rollers rotate in opposite directions, i.e., they rotate downwards respectively. After rotating to a certain angle, the steel plate slides off the first and second side horseshoe rollers. If it slides onto the lifting platform, the subsequent side-pushing device first pushes the steel plate to the side, and then pushes it backwards, aligning the steel plate front to back and side to side. This process is repeated from steps S100 to S400 before conveying the next steel plate.

[0052] After multiple steel plates are stacked, once the stacker reaches the target number of plates, the lifting platform lowers to its position, and the lateral chain moves the stacked steel plates and bundles to the lower line position.

[0053] In the above-mentioned steel plate stacking adjustment method, during the steel plate conveying process, the position information of the steel plate and the first and second side horseshoe rollers is collected, and the conveying speed of the first and second side horseshoe rollers is adjusted based on this information, so that the steel plate is adjusted to the middle position. This increases the probability that both sides of the steel plate fall at the same time during the falling process, reduces the probability of the steel plate rubbing against the horseshoe rollers, and improves the quality of the steel plate.

[0054] In some embodiments, see Figure 1 The step of real-time acquisition of the first width position information of the steel plate and the first side horseshoe roller in the width direction, and the second width position information of the steel plate and the second side horseshoe roller in the width direction, includes:

[0055] Position images of the first side horseshoe roller, the second side horseshoe roller, and the steel plate are acquired along the height direction.

[0056] The first width position information is obtained by identifying the first distance between each region of the tail of the first side horseshoe roller in the length direction and the steel plate in the position image.

[0057] The second width position information is obtained by identifying the second distance between each region of the tail of the second side horseshoe roller in the length direction and the steel plate in the position image.

[0058] In this step, multiple image analysis devices can be installed above the first and second side horseshoe rollers. The image analysis devices include an image acquisition mechanism and an image analysis mechanism. The image acquisition mechanism includes cameras and high-speed cameras, etc. Preferably, the image acquisition mechanism is positioned in the middle above the first and second side horseshoe rollers. Images are taken from a top-down perspective, capturing the positional relationship between the steel plate, the first side horseshoe roller, and the second side horseshoe roller on the horizontal plane.

[0059] Image analysis mechanisms, including image processing and analysis software, analyze images transmitted by the image analysis unit. They identify the positional relationship between the steel plate, the first side horseshoe roller, and the second side horseshoe roller in the positional image on the horizontal plane. For example, the head of the steel plate may be tilted towards one of the first side horseshoe rollers or the second side horseshoe roller, or the steel plate may be parallel to the first side horseshoe roller and the second side horseshoe roller, but closer to one of them.

[0060] In some embodiments, the step of comparing the first width position information and the second width position information, and adjusting the conveying speed of the first side horseshoe roller and the second side horseshoe roller to center the steel plate during the conveying process includes:

[0061] Compare the magnitudes of the first distance and the second distance at the same position on the first and second side horseshoe rollers.

[0062] Adjust the conveying speed of the horseshoe roller on the side with the larger value of the first distance and the second distance to be less than the conveying speed of the horseshoe roller on the other side.

[0063] When the steel plates are aligned, adjust the conveying speed of the first side horseshoe roller to be the same as that of the second side horseshoe roller.

[0064] In this embodiment, the distance between the head of the steel plate and the first and second side horseshoe rollers is typically compared.

[0065] Taking this as an example, the first and second distances at the head of the steel plate are not equal, such as the first distance being greater than the second distance. In this case, the head of the steel plate tilts towards the second side horseshoe roller. The conveying speed of the first side horseshoe roller can be adjusted to be greater than that of the second side horseshoe roller, so that the movement speed of the steel plate at the first side horseshoe roller is greater than that at the second side horseshoe roller. In this way, the steel plate gradually moves towards the first side horseshoe roller, thereby achieving the equality of the first and second distances, completing the alignment.

[0066] After achieving alignment, the conveying speed of the first side horseshoe roller and the second side horseshoe roller are adjusted in a timely manner to make them consistent, so that the steel plate remains aligned.

[0067] In some embodiments, in the step of adjusting the conveying speed of the horseshoe roller on the side with the larger of the first distance and the second distance to be less than the conveying speed of the horseshoe roller on the other side:

[0068] Reduce the conveying speed of the first side horseshoe roller and the second side horseshoe roller, and the reduction in conveying speed of the side corresponding to the horseshoe roller with the larger value of the first distance and the second distance is greater than the reduction in conveying speed of the other side horseshoe roller.

[0069] In this embodiment, the conveying speed of both the first and second side horseshoe rollers is reduced, and the conveying speed of the side with the larger value of the first and second distances is reduced more significantly. This reduces the overall movement speed of the steel plate during the alignment process, making it easier to achieve alignment and reducing the probability of over-adjustment on one side, resulting in tilting on the other side.

[0070] In some embodiments, during the alignment process, the difference in conveying speed between the first and second side horseshoe rollers gradually decreases. This method avoids the situation where, after alignment is achieved, the faster side horseshoe roller continues to move at a slightly faster speed due to inertia, reducing the probability of over-alignment on one side and resulting in tilting on the other side.

[0071] In some embodiments, when the magnitudes of the first distance and the second distance are inconsistent, the position of the steel plate on the first side horseshoe roller and the second side horseshoe roller in the length direction is recorded.

[0072] This method can record the running position of the steel plate, which facilitates the subsequent maintenance of the horseshoe roller and reduces the probability of needing to adjust and align the steel plate during subsequent conveying.

[0073] In some embodiments, it also includes:

[0074] Based on the position of the steel plate in the length direction, the conveying speed of the first side horseshoe roller, and the conveying speed of the second side horseshoe roller, determine the corresponding position of the horseshoe roller that needs to be adjusted in the first side horseshoe roller and the second side horseshoe roller.

[0075] In this embodiment, the conveying distance of the steel plate can be determined based on its position along its length. By combining the conveying speeds of the first and second side horseshoe rollers, it is possible to determine which of the first and second side horseshoe rollers is malfunctioning. Specifically, by combining the moment when the steel plate did not tilt, the moment when it began to tilt, and the moment when it had already tilted, along with the conveying speeds of the first and second side horseshoe rollers, it is possible to determine from which horsehoe roller the tilting began and how the tilt gradually increased. This allows for maintenance and adjustment of that horsehoe roller, reducing the probability of needing to realign the steel plate during subsequent conveying.

[0076] In some embodiments, it also includes:

[0077] After the steel plate reaches the target position, the height data of the steel plate at various points along its length are collected.

[0078] Adjust the height of some or all of the first and second side horseshoe rollers according to the height data so that the steel plate is horizontal in the height direction.

[0079] In this embodiment, the corresponding horseshoe rollers are adjusted according to the height data of the steel plate on each horseshoe roller, so that the steel plate is in a horizontal state in the height direction. In this way, during the subsequent process of the steel plate sliding down, it is less likely that one side of the steel plate will fall first and the other side will fall later, which would cause the steel plate to scrape against the horseshoe roller and affect the quality of the steel plate.

[0080] In some embodiments, the step of adjusting the height of some or all of the first and second side horseshoe rollers so that the steel plate is horizontal in the height direction includes:

[0081] The height data of the steel plate at the corresponding positions of all the first and second side horseshoe rollers are statistically analyzed.

[0082] Adjust the height of the first and second side horseshoe rollers whose height data is not within the target height range so that the steel plate is horizontal in the height direction.

[0083] In this embodiment, the height data of the target height range usually accounts for a large proportion, which reduces the number of times the height of the horseshoe rollers needs to be raised or lowered, reduces the amount of adjustment work, and improves the stacking efficiency.

[0084] In some embodiments, the method for determining the target height range is as follows:

[0085] The distribution range of the most frequent altitude data among all altitude data is taken as the target altitude range.

[0086] Alternatively, the design height range of the first side horseshoe roller and the design height range of the first side horseshoe roller can be used as the target height range.

[0087] In some embodiments, it also includes:

[0088] Adjust the horseshoe rollers on the first and second sides whose circumferential rotation speeds are inconsistent.

[0089] This method ensures that the rotation speed of the horseshoe rollers is consistent, preventing the steel plate from falling on one side first and the other side later, which could cause the steel plate to scrape against the horseshoe rollers and affect the quality of the steel plate.

[0090] For example, the horseshoe roller is adjusted as follows:

[0091] Operating Procedure: First, on-site personnel measure the adjustment angle of the horseshoe roller to be calibrated (i.e., the horseshoe roller to be adjusted) based on the position of the lowered steel plate, and inform the computer operator of the adjustment angle. Then, the system operator disables the turning movement of other horseshoe rollers except the calibrated one. Finally, after entering the adjustment angle in the "Set Open Position" box, the positioning adjustment of the horseshoe roller angle is activated until the receiving position is reached. After calibrating the horseshoe roller, it is immobilized, and then the calibration of other horseshoe rollers continues until all horseshoe rollers have turned to the calibrated position. During the turning process, if the ideal turning angle is not reached, the horseshoe roller is first turned back to the initial position, then the turning angle is adjusted and the process is repeated for observation. Multiple adjustments are made until the ideal turning angle is achieved. This completes the horseshoe roller turning angle calibration work.

[0092] Note: The initial rotation angle should not be too large. Start with 30 degrees and gradually increase the rotation angle until the ideal rotation angle is achieved.

[0093] The above technical solutions of the present invention are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made under the technical concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A method of adjusting a stack of steel sheets, characterized by, The method comprises the following steps: adjusting the distance between the first side horse shoe roller and the second side horse shoe roller to the corresponding width of the steel plate, the first side horse shoe roller and the second side horse shoe roller being symmetrically arranged about the length direction of the stack; collecting the first width position information of the steel plate and the first side horse shoe roller in the width direction and the second width position information of the steel plate and the second side horse shoe roller in the width direction in the track of the first side horse shoe roller and the second side horse shoe roller conveying the steel plate along the length; comparing the first width position information and the second width position information, adjusting the conveying speed of the first side horse shoe roller and the conveying speed of the second side horse shoe roller so that the steel plate is centered during the conveying process; after the steel plate reaches the target position, rotating the first side horse shoe roller and the second side horse shoe roller along the circumferential direction, and placing the steel plate for stacking; the step of collecting the first width position information of the steel plate and the first side horse shoe roller in the width direction and the second width position information of the steel plate and the second side horse shoe roller in the width direction in real time comprises: collecting the position image of the first side horse shoe roller, the second side horse shoe roller and the steel plate along the height direction; identifying the first distance between each area at the tail of the first side horse shoe roller in the length direction and the steel plate in the position image to obtain the first width position information; identifying the second distance between each area at the tail of the second side horse shoe roller in the length direction and the steel plate in the position image to obtain the second width position information; the step of comparing the first width position information and the second width position information, adjusting the conveying speed of the first side horse shoe roller and the conveying speed of the second side horse shoe roller so that the steel plate is centered during the conveying process comprises: comparing the size of the first distance and the second distance at the same position of the first side horse shoe roller and the second side horse shoe roller; adjusting the conveying speed of the corresponding horse shoe roller on the side where the larger value of the first distance and the second distance to be smaller than the conveying speed of the horse shoe roller on the other side; when the steel plate reaches the centered state, adjusting the conveying speed of the first side horse shoe roller and the conveying speed of the second side horse shoe roller to be consistent.

2. The method of adjusting a stack of steel sheets according to claim 1, characterized by, in the step of adjusting the conveying speed of the corresponding horse shoe roller on the side where the larger value of the first distance and the second distance to be smaller than the conveying speed of the horse shoe roller on the other side: decreasing the conveying speed of the first side horse shoe roller and the conveying speed of the second side horse shoe roller, and the decreasing amplitude of the conveying speed of the corresponding horse shoe roller on the side where the larger value of the first distance and the second distance is greater than the decreasing amplitude of the conveying speed of the horse shoe roller on the other side.

3. The method of adjusting a stack of steel sheets according to claim 1, characterized by, recording the position of the steel plate in the length direction of the first side horse shoe roller and the second side horse shoe roller at the moment when the size of the first distance and the second distance is inconsistent.

4. The method of adjusting a stack of steel sheets according to claim 3, characterized by, further comprising: determining the corresponding position of the horse shoe roller that needs to be adjusted among the first side horse shoe roller and the second side horse shoe roller according to the position of the steel plate in the length direction, the conveying speed of the first side horse shoe roller and the conveying speed of the second side horse shoe roller.

5. The method of adjusting a stack of steel sheets according to claim 1, characterized by, further comprising: collecting the height data of the steel plate at each position in the length direction after the steel plate reaches the target position; According to the height data, the height of part or all of the horse shoes on the first side horse shoe roller and the second side horse shoe roller is adjusted so that the steel plate is in a horizontal state in the height direction.

6. The method of adjusting a stack of steel sheets according to claim 5, characterized in that, The step of adjusting the height of part or all of the horse shoes on the first side horse shoe roller and the second side horse shoe roller so that the steel plate is in a horizontal state in the height direction comprises: Statistics of the height data of the steel plate at the corresponding positions of all the first side horse shoe rollers and the second side horse shoe rollers; The height of the horse shoes on the first side horse shoe roller and the second side horse shoe roller corresponding to the height data not in the target height range is adjusted so that the steel plate is in a horizontal state in the height direction.

7. The method of adjusting a stack of steel sheets according to claim 6, characterized in that, The method for determining the target height range is: The height data range with the highest frequency in all the height data is taken as the target height range; Or, the design height range of the first side horse shoe roller and the design height range of the second side horse shoe roller are taken as the target height range.

8. The method of adjusting a stack of steel sheets according to claim 6, characterized in that, Further comprising: Adjusting the horse shoes on the first side horse shoe roller and the second side horse shoe roller which rotate at different speeds in the circumferential direction.

Images