A roll bar recycling device and method
By designing a roller recycling and reuse device, which uses rollers, lifting rods, limit plates, and pressure testing devices, combined with image and video acquisition devices, the automated detection and screening of rollers has been achieved. This solves the problems of large errors and low efficiency in manual detection, reduces roller waste and labor costs, and improves detection reliability and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XTC NEW ENERGY MATERIALS (NINGDE) CO LTD
- Filing Date
- 2023-03-31
- Publication Date
- 2026-07-28
AI Technical Summary
The existing technology for roller recycling suffers from problems such as strong subjectivity, large errors, low efficiency, and high labor costs due to manual inspection, resulting in roller waste and increased capital costs.
Design a roller recycling and reuse device, which uses rollers, lifting rods, limit plates and pressure testing devices, combined with image and video acquisition devices, to realize the automated detection and screening of rollers, and process rollers that do not meet the recycling requirements through constant force cutting and crushing.
It enables efficient and automated inspection and recycling of rollers, reducing labor costs, roller waste and capital costs, and improving the reliability and efficiency of inspection.
Smart Images
Figure CN116359009B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of roller recycling and reuse technology, and in particular to a roller recycling and reuse device and method. Background Technology
[0002] In the sintering process of lithium battery ternary material production, the rollers disassembled during major and minor overhauls are often directly smashed and scrapped, leading to waste. To avoid this waste, currently, most methods involve manual inspection of the rollers before smashing them for scrap. Workers visually inspect the rollers to select those in good condition for reuse. However, this method has the following problems: manual inspection is highly subjective, prone to errors, and susceptible to misidentification, affecting the reliability of the inspection. It also suffers from low efficiency and high labor costs. Therefore, it is necessary to develop and design an automated roller recycling and reuse device and method. Summary of the Invention
[0003] In view of this, the purpose of this invention is to provide a roller recycling and reuse device and method that can achieve efficient and automated detection and recycling of rollers, reduce labor costs, reduce waste of rollers during major and medium repairs, and reduce capital costs.
[0004] According to one aspect of the present invention, a roller recycling and reuse device is provided, comprising a base, a roller rotatably disposed on the upper side of the base, the roller having a groove that fits the shape of the roller; a drive mechanism rotatably disposed on the upper side of the base and the lower side of the roller, the drive mechanism including lifting rods rotatably disposed on the left and right sides of the base, the front end of the lifting rods being rotatably provided with a limit plate; a pressure testing device is disposed on the front side of the base, the pressure testing device including a drive mechanism that moves up and down relative to the roller in a vertical direction, the lower end of the drive mechanism being provided with a cutter, the cutter being located at the upper part of the vertical direction of the midpoint of the line connecting the two limit plates.
[0005] In the above technical solution, the rollers disassembled during major and medium-sized equipment maintenance are transported and fall into the groove of the drum. The rotation of the drum causes the roller to slide onto the lifting rod and roll further under the blade using gravity. Force is applied in the middle of the roller. If the roller breaks, the recycling requirements are not met; if the roller does not break, the reuse requirements are met.
[0006] In some embodiments, the drive mechanism includes a support, on the upper end of which a rotating motor is fixedly mounted; the output end of the motor is connected to the shaft of the rotating wheel; an eccentric shaft perpendicular to the rotating wheel is fixedly mounted near the edge of the rotating wheel, the eccentric shaft is rotatably connected to one end of the segment arm, and the other end of the segment arm is rotatably connected to one end of the telescopic arm; a limit device is provided in the middle of the telescopic arm, and the other end of the telescopic arm is connected to one end of a spring, and the other end of the spring is fixedly connected to a cutter.
[0007] In the above technical solution, the design of using a rotating wheel combined with a telescopic arm ensures stable up-and-down reciprocating motion, while the spring at the lower end ensures that the applied force is constant. This ensures both structural simplicity and stability of the applied force.
[0008] In some embodiments, the drive mechanism includes a support, the upper end of which is fixed with a hydraulic telescopic arm, and the bottom of which is provided with a spring.
[0009] Among the above technical solutions, the hydraulic telescopic boom solution offers more precise control of constant force compared to the previous solution.
[0010] In some embodiments, the drive mechanism transmits a constant force of 200N-240N to the cutter.
[0011] In the above technical solution, when the cutter contacts the roller, it transmits a constant force of 200N-240N downwards. If the roller does not break, it indicates that the roller meets the recycling requirements. It can be understood that 200N-240N is the threshold for measuring roller breakage.
[0012] In some embodiments, a storage bin is provided directly above the roller, and an openable outlet is provided at the bottom of the storage bin; a crusher is provided at the lower part of the vertical direction of the midpoint of the line connecting the two limiting plates; and a collection rack is provided on the front side of the two limiting plates.
[0013] In the above technical solution, the rollers disassembled during major and minor equipment repairs are transported and pushed into a storage bin. The foremost roller falls into the groove of the drum. The rotation of the drum causes the roller to slide under the cutting edge, where force is applied in the middle. If the roller breaks, it falls into the crusher below for breaking; if it doesn't break, the cutting edge opens, and the roller meets the requirements for reuse. The storage bin ensures a sufficient number of rollers fall into the drum groove.
[0014] In some embodiments, the drive mechanism further includes an image acquisition device whose field of view covers the two lifting rods; a whiteboard is provided between the two lifting rods, and a plurality of black lines perpendicular to the two lifting rods are provided on the whiteboard.
[0015] In the above technical solution, the straightness error of the rollers may increase during use before recycling. Therefore, to further screen the rollers, an image acquisition device is set up to measure straightness. Furthermore, since the rollers are in a forward and downward rolling state during shooting, and the camera captures a flat surface with distortion, a white board with several black lines is set on it. These black lines are used as calibration lines to ensure measurement accuracy.
[0016] In some embodiments, video acquisition devices are provided on the left and right sides of the base, and the field of view of the image acquisition devices covers the sides of the two lifting rods.
[0017] In the above technical solution, the circular runout error of the rollers may increase during their use before recycling. Therefore, to further screen the rollers, a video acquisition device is set up to measure the circular runout from the side. Furthermore, to reduce the error, video acquisition devices are symmetrically set on both sides.
[0018] According to another aspect of the present invention, a method for recycling and reusing rollers is provided, applied to the roller recycling and reuse apparatus described above; the method includes the following steps:
[0019] Open the opening below the storage bin and wait for the detection roller to fall onto the drum;
[0020] The roller rotates to the opening of the storage bin, and the roller bar falls into the groove of the roller;
[0021] The rollers inside the drum are transported to the lower part by the rotation of the drum. The rollers fall into the lifting rod, the lifting rod rotates downward, and the rollers roll to the limit plate.
[0022] When the cutter moves downward and contacts the middle position of the roller, the pressure testing device applies a constant force vertically downward;
[0023] If the roller breaks, it falls into the crusher below. If the roller does not break, the limiting plate rotates to a position parallel to the lifting rod, and the roller rolls forward under its own weight and is collected for reuse.
[0024] In the above technical solution, the rollers disassembled during major and medium-sized equipment maintenance are transported and fall into the groove of the drum. The rotation of the drum causes the roller to slide onto the lifting rod and roll further under the blade using gravity. Force is applied in the middle of the roller. If the roller breaks, the recycling requirements are not met; if the roller does not break, the reuse requirements are met.
[0025] In some embodiments, if the roller breaks, it falls into the crusher below; if the roller does not break, the limiting plate rotates to a position parallel to the lifting rod, and the roller rolls forward under its own weight and is collected for reuse. This also includes:
[0026] During the time it takes for the roller to roll from its starting position to the limit plate, the image acquisition device captures several images of the roller from above.
[0027] The acquired images are preprocessed to extract the upper and lower edge lines of the roller in several images. The black line closest to the roller in the image is set as the axis of the roller. The straightness of the roller is obtained by comparing this axis with the upper and lower edge lines.
[0028] The whiteboard is divided into three areas: the front 1 / 3, the middle 1 / 3, and the back 1 / 3, with different weights assigned. Several straightness values are weighted according to their respective areas, and the weighted average straightness value is calculated. If the weighted average straightness value is greater than a set threshold, the pressure testing device continuously applies a vertically downward force until the roller breaks and is reclaimed.
[0029] In the above scheme, the straightness error of the rollers may increase during use before recycling. Therefore, to further screen the rollers, an image acquisition device is set up to measure straightness. Furthermore, since the rollers are in a forward and downward rolling state during shooting, and the camera captures a plane with distortion, a white board with several black lines is set up as calibration lines to ensure measurement accuracy. Furthermore, since the edges of the image acquisition device may have distortion errors, while the center will not, the white board is set into three regions, each weighted, and a weighted average is calculated to obtain a more accurate measurement value.
[0030] In some embodiments, if the roller breaks, it falls into the crusher below; if the roller does not break, the limiting plate rotates to a position parallel to the lifting rod, and the roller rolls forward under its own weight and is collected for reuse. This also includes:
[0031] During the time it takes for the roller to roll from its starting position to the limit plate, the video device captures the video stream of the roller's movement from both sides.
[0032] The acquired video stream is preprocessed to extract the edge of the roller end face and calculate the area swept by the roller end face when the roller moves.
[0033] The average of the calculated areas on both sides is taken. If the area values on both sides and the average area value are greater than the set threshold, the pressure testing device will continue to apply a vertically downward force until the roller breaks and is recycled.
[0034] In the above technical solution, the rollers may experience increased circular jump error during use before recycling. Therefore, to further screen the rollers, a video acquisition device is used to measure the circular jump from the side. Furthermore, to reduce error, video acquisition devices are symmetrically positioned on both sides. Generally, rollers of the same weight slide down the same position and distance as the lifting rod rotates. Assuming the roller is an ideal cylinder with zero circular jump error, the area swept during its descent can be calculated and used as a standard. Further calculation of the area swept by the roller during its descent, comparing it to the standard, and then comparing this difference with a threshold value determines whether the recycling requirements are met. Attached Figure Description
[0035] 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 these drawings without creative effort.
[0036] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the device of the present invention;
[0037] Figure 2 This is a partial side view of an embodiment of the device of the present invention;
[0038] Figure 3 This is a three-dimensional partial structural schematic diagram of an embodiment of the device of the present invention;
[0039] Figure 4 This is a three-dimensional structural schematic diagram of an optional embodiment of the device of the present invention;
[0040] Figure 5 This is a partial structural schematic diagram of the storage compartment in an embodiment of the device of the present invention;
[0041] Figure 6 This is a schematic diagram of the pulverizer and collection rack in an embodiment of the device of the present invention;
[0042] Figure 7 This is a three-dimensional structural diagram of the image acquisition device according to an embodiment of the present invention;
[0043] Figure 8 This is a top-down view structural diagram of the whiteboard in an embodiment of the device of the present invention;
[0044] Figure 9 This is a partial lateral structural diagram of the image acquisition device according to an embodiment of the present invention;
[0045] Figure 10 This is a schematic diagram of the forward structure of the video acquisition device according to an embodiment of the present invention;
[0046] Figure 11 This is a top-view structural diagram of the video acquisition device according to an embodiment of the present invention;
[0047] Figure 12 This is a complete structural schematic diagram of an embodiment of the device of the present invention;
[0048] Figure 13 This is a simplified schematic diagram of straightness measurement according to an embodiment of the method of the present invention;
[0049] Figure 14 This is a simplified schematic diagram of the area swept by the roller in an embodiment of the method of the present invention. Detailed Implementation
[0050] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the invention. Similarly, the following embodiments are only some, not all, embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0051] This invention provides a roller recycling and reuse device that can achieve efficient and automated detection and recycling of rollers, reducing labor costs, reducing waste of rollers during major and medium repairs, and reducing capital costs.
[0052] Please see Figure 1 The system includes a base 3, on which a roller 2 is rotatably mounted. The roller has a groove 21 that matches the shape of the roller 1. A lifting device 4 is rotatably mounted on the upper side of the base 3 and the lower side of the roller 2. The lifting device 4 includes lifting rods 41 rotatably mounted on the left and right sides of the base 3. A limit plate 42 is rotatably mounted at the front end of the lifting rods 41. A pressure testing device 7 is mounted on the front side of the base 3. The pressure testing device 7 includes a drive mechanism 71 that moves up and down relative to the roller 2 in a vertical direction. A cutter 72 is mounted at the lower end of the drive mechanism 71. The cutter 72 is located at the upper part of the vertical direction of the midpoint of the line connecting the two limit plates 42.
[0053] Please see Figure 2 The roller 1, which is disassembled during the major and minor overhaul of the equipment, is transported and falls into the groove 21 of the drum 2. The rotation of the drum 2 causes the roller 1 to slide onto the lifting rod 41 and roll further under the blade 72 by gravity. Force is applied in the middle of the roller 1. If the roller 1 breaks, it does not meet the recycling requirements. If the roller 1 does not break, it meets the reuse requirements.
[0054] Further, please refer to Figure 1 The drive mechanism 71 includes a support 711, which can be suspended, wall-mounted, or otherwise mounted, but is not shown in the figure. A rotating motor 712 is fixedly mounted on the upper end of the support 711; the output end of the motor 712 is connected to the shaft of the rotating wheel 713; an eccentric shaft 718 perpendicular to the rotating wheel is fixedly mounted near the edge of the rotating wheel 713, and the eccentric shaft 718 is rotatably connected to one end of the segment arm 714, and the other end of the segment arm 714 is rotatably connected to one end of the telescopic arm 715; a limit device 716 is provided in the middle of the telescopic arm 715, and the other end of the telescopic arm 715 is connected to one end of a spring 717, and a cutter 72 is fixedly connected to the other end of the spring 717.
[0055] Please see Figure 3The design employs a rotating wheel 713 paired with a telescopic arm 715, ensuring stable up-and-down reciprocating motion. The lower spring 717 ensures that the applied force is constant. This design guarantees both structural simplicity and stability of the applied force.
[0056] Furthermore, as an alternative implementation, please refer to Figure 4 The drive mechanism includes a support 731, with a hydraulic telescopic arm 732 fixedly mounted on its upper end. A spring 734 is installed at the bottom of the hydraulic telescopic arm 732, and a cutter 734 and a limiting member 733 for limiting the hydraulic telescopic arm 732 are installed at the bottom of the spring 734. Compared with the previous solution, the hydraulic telescopic arm solution provides more precise control of constant force.
[0057] Furthermore, in the above embodiment, the drive mechanism transmits a constant force of 200N-240N to the cutter. When the cutter contacts the roller, it transmits a constant force of 200N-240N downwards. If the roller does not break, it indicates that the roller meets the recycling requirements. It is understood that 200N-240N is the threshold for measuring roller breakage, and 220N is preferred in this case.
[0058] Further, please refer to Figure 5 , 6 To better recycle and crush the rollers, a storage bin 8 is located directly above the drum 2, with an openable outlet 81 at the bottom. A crusher 9 is located vertically below the midpoint of the line connecting the two limit plates 42, and a collection rack 10 is located in front of the two limit plates 42. Rollers disassembled during major or medium-scale repairs are transported and pushed into the storage bin. The foremost roller falls into the groove of the drum. The rotation of the drum causes the roller to slide under the blades, applying force in the middle. If the roller breaks, it falls into the crusher below for further crushing; if it does not break, the blades open, and the roller meets the requirements for reuse. The storage bin ensures a sufficient number of rollers fall into the drum groove.
[0059] Furthermore, as an optimized screening method, please refer to [link / reference]. Figure 7 , Figure 8 , Figure 9In this embodiment, the driving mechanism 7 also includes an image acquisition device 74, which includes an image acquisition unit 741 whose field of view covers the two lifting rods 41. A white board 742 is provided between the two lifting rods 41, and several black lines 743 perpendicular to the two lifting rods 41 are provided on the white board. It should be noted that, in order to ensure the recognition effect, the spacing between the black lines is preferably controlled between 3 / 4d and 1d, where d is the diameter of the roller. The purpose of this solution is that the straightness error of the roller may increase during its use before recycling. Therefore, in order to further screen the roller, an image acquisition device is set up to measure the straightness. Furthermore, since the roller is in a forward and downward rolling state during shooting, and the camera captures a plane during shooting and there is distortion, a white board is set up with several black lines on it. The black lines are used as calibration lines to ensure the accuracy of the measurement.
[0060] Furthermore, as a screening option, either alone or in conjunction with the previous implementation scheme, please refer to [link to relevant documentation]. Figure 10 , Figure 11 Video acquisition devices 11 are installed on both sides of the base, and the field of view of these devices covers the sides of the two lifting rods 41. During the use of the rollers before recycling, the circular runout error may increase. Therefore, to further screen the rollers, video acquisition devices are set up to measure the circular runout from the side. Furthermore, to reduce the error, video acquisition devices are symmetrically installed on both sides.
[0061] Please refer to the complete schematic diagram of the device described in the above embodiments. Figure 12 Each component in the diagram corresponds to one of the components mentioned above, and will not be described again here.
[0062] Based on the roller recycling and reuse device proposed above, this embodiment further proposes a roller recycling and reuse method, which is applied to the device proposed above.
[0063] The method includes the following steps:
[0064] Open the opening 81 below the storage bin 8, and wait for the inspection roller 1 to fall into the drum 2;
[0065] As the roller 2 rotates to the opening 81 of the storage bin, the roller bar 1 falls into the groove 21 of the roller;
[0066] The roller 1 inside the drum 2 is transported to the lower part by the rotation of the drum 2. The roller 1 falls into the lifting rod 41, the lifting rod 41 rotates downward, and the roller 1 rolls to the limit plate 41.
[0067] When the cutter 72 moves downward and contacts the middle position of the roller 1, the pressure testing device 7 applies a constant force vertically downward.
[0068] If roller 1 breaks, it falls into the crusher 9 below. If roller 1 does not break, the limiting plate 42 rotates to a position parallel to the lifting rod 41, and roller 1 rolls forward under its own weight and is collected for reuse.
[0069] The rollers disassembled during major and minor repairs are transported and fall into the grooves of the drum. The rotation of the drum causes the roller to slide onto the lifting rod, and then, using gravity, rolls it further to the blade edge. Force is applied to the middle of the roller. If the roller breaks, it does not meet the recycling requirements; if it does not break, it meets the reuse requirements. It is important to note that to ensure smooth sliding of the roller, the downward rotation angle of the lifting rod 41 should be controlled between 45° and 60°.
[0070] Furthermore, to optimize the screening process, if roller 1 breaks, it falls into the crusher 9 below; if roller 1 does not break, the limiting plate 42 rotates to a position parallel to the lifting rod 41, and the roller rolls forward under its own weight and is collected for reuse. This also includes:
[0071] During the time it takes for the roller to roll from its starting position to the limiting plate, the image acquisition device 74 captures several images of the roller 1 from above.
[0072] The acquired images are preprocessed, and the upper and lower edge lines of roller 1 are extracted from several images. The black line 743 closest to the location of roller 1 in the image is set as the axis of the roller. Please refer to [link to relevant documentation]. Figure 13 The straightness of the roller is obtained by comparing the axis with the upper and lower edge lines;
[0073] The whiteboard 742 is divided into three regions: the front 1 / 3, the middle 1 / 3, and the rear 1 / 3, with different weights assigned. Several straightness values are weighted according to their respective regions, and the weighted average straightness value is calculated. If the weighted average straightness value is greater than a set threshold, the pressure testing device continuously applies a vertically downward force until the roller breaks and is recycled.
[0074] During the use of rollers before recycling, straightness errors may increase. Therefore, to further screen the rollers, an image acquisition device is set up to measure straightness. Furthermore, since the roller is rolling forward and downward during imaging, and the camera captures a flat surface with distortion, a white board with several black lines is used as calibration lines to ensure measurement accuracy. Moreover, since the edges of the image acquisition device may exhibit distortion errors, while the center is free from such issues, the white board is divided into three regions, each weighted, and a weighted average is calculated to obtain a more accurate measurement value.
[0075] It should be noted that this embodiment does not limit the specific image algorithm and preprocessing process used. As long as the algorithm can clearly extract the upper and lower edge lines and the black line, it is acceptable. This case does not impose excessive requirements. The circular jump error can be calculated using image methods, such as calculating the distance from each point on the line to the axis, etc., which will not be elaborated here. As for how to use the black line as the axis, the midpoint of the line connecting the two endpoints on one side of the upper and lower edge lines can be selected as the starting point of the axis, and the midpoint of the line connecting the two endpoints on the other side of the upper and lower edge lines can be selected as the starting point of the axis. This will not be elaborated here. The weight values need to be determined according to different lenses and the rotation angle of the lifting rod. Standard industrial lenses generally use a weight allocation ratio of 3:4:3. If the rotation angle is too large, the weight allocation ratio can be adjusted to 2:6:2, and if it is too small, the weight allocation ratio can be adjusted to 3:4:3. Alternatively, the rotation angle of the lifting rod 42 can be combined with the field of view and focal plane of the lens to calculate a suitable interval using the Pythagorean theorem, and the weight can be divided according to the interval. At the same time, the threshold setting varies depending on the requirements of different rollers, which will not be limited here.
[0076] Furthermore, as an optimized screening scheme, either alone or in conjunction with the previous embodiment, if the roller breaks, it falls into the crusher below; if the roller does not break, the limiting plate rotates to a position parallel to the lifting rod, and the roller rolls forward under its own weight and is collected for reuse. This also includes:
[0077] During the time between the roller 1 rolling from the starting position to the limit plate 42, the video device 11 captures the motion video stream of the roller 1 from both sides.
[0078] The acquired video stream is preprocessed to extract the edge of roller 1's end face and calculate the area swept by the roller's end face during its movement. Please refer to [link to relevant documentation]. Figure 14 ;
[0079] The average of the calculated areas on both sides is taken. If the area values on both sides and the average area value are greater than the set threshold, the pressure testing device will continue to apply a vertically downward force until the roller breaks and is recycled.
[0080] During the use of rollers before recycling, the circular runout error may increase. Therefore, to further screen the rollers, a video capture device is set up to measure the circular runout from the side. Furthermore, to reduce the error, video capture devices are symmetrically set up on both sides. Generally, rollers of the same weight slide down the same position and distance as the lifting rod rotates. Assuming an ideal roller is a cylinder with zero circular runout error, the area swept during its descent can be calculated. Based on this as a standard, the area swept by the roller during its descent is further calculated, and the difference between this and the standard is compared with a threshold to determine whether the recycling requirements are met.
[0081] It should be noted that this embodiment does not limit the specific video algorithm or preprocessing procedure used, as long as the motion trajectory can be clearly extracted and the area calculated. This embodiment does not impose excessive requirements. Furthermore, the threshold setting varies depending on the requirements of different rollers, and this embodiment does not impose any limitations on it.
[0082] The above description is only a part of the embodiments of the present invention and does not limit the scope of protection of the present invention. Any equivalent device or equivalent process transformation made based on the content of the present invention specification and drawings, or direct or indirect application in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A method for recycling and reusing rollers, characterized in that, The method is based on a roller recycling and reuse device, which includes a base on which a roller is rotatably mounted. The roller has a groove that matches the shape of the roller. A lifting device is located on the underside of the roller on the base. This lifting device includes a lifting rod and a limiting plate. The lifting rod is rotatably mounted on both sides of the base, and the other end of each lifting rod is rotatably mounted with a limiting plate to block the roller. A pressure testing device is located on the front side of the base. This pressure testing device includes a cutter and a drive mechanism. The cutter is movably mounted on the drive mechanism, pointing downwards towards the midpoint of the line connecting the two limiting plates. The device also includes an image acquisition device whose field of view covers both lifting rods. A whiteboard, which works in conjunction with the image acquisition device, is positioned between the two lifting rods. The roller on the lifting device is located between the whiteboard and the image acquisition device. Several parallel black lines are arranged on the whiteboard, perpendicular to the lifting rods. The method includes the following steps: Open the opening below the storage bin and wait for the detection roller to fall onto the drum; The roller rotates to the opening of the storage bin, and the roller bar falls into the groove of the roller; The rollers inside the drum are transported to the lower part by the rotation of the drum. The rollers fall into the lifting rod, the lifting rod rotates downward, and the rollers roll to the limit plate. When the cutter moves downward and contacts the middle position of the roller, the pressure testing device applies a constant force vertically downward; If the roller breaks, it falls into the crusher below. If the roller does not break, the limit plate rotates to a position parallel to the lifting rod, and the roller rolls forward under its own weight and is collected for reuse. If the roller breaks, it falls into the crusher below. If the roller does not break, the limiting plate rotates to a position parallel to the lifting rod, and the roller rolls forward under its own weight and is collected for reuse. This process also includes: During the time it takes for the roller to roll from its starting position to the limit plate, the image acquisition device captures several images of the roller from above. The acquired images are preprocessed to extract the upper and lower edge lines of the roller in several images. The black line closest to the roller in the image is set as the axis of the roller. The straightness of the roller is obtained by comparing this axis with the upper and lower edge lines. The whiteboard is divided into three areas: the front 1 / 3, the middle 1 / 3, and the back 1 / 3. Different weights are assigned to each area. Several straightness values are weighted according to their respective areas, and the weighted average straightness value is calculated. If the weighted average straightness value is greater than the set threshold, the pressure testing device will continuously apply a vertically downward force until the roller breaks and is recycled. If the roller breaks, it falls into the crusher below. If the roller does not break, the limiting plate rotates to a position parallel to the lifting rod, and the roller rolls forward under its own weight and is collected for reuse. This process also includes: During the time it takes for the roller to roll from its starting position to the limit plate, the video acquisition device captures the video stream of the roller's movement from both sides. The acquired video stream is preprocessed to extract the edge of the roller end face and calculate the area swept by the roller end face when the roller moves. The average of the calculated areas on both sides is taken. If the area values on both sides and the average area value are greater than the set threshold, the pressure testing device will continue to apply a vertically downward force until the roller breaks and is recycled.
2. The method for recycling and reusing rollers as described in claim 1, characterized in that, The drive mechanism includes a support, and a rotating motor, a rotating wheel, a segmented arm, and a telescopic arm fixedly mounted on the support. The motor output end of the rotating motor is fixedly connected to the axis of one side of the rotating wheel. An eccentric shaft is fixedly mounted on the other side of the rotating wheel. The eccentric shaft is rotatably connected to one end of the segmented arm, and the other end of the segmented arm is rotatably connected to one end of the telescopic arm. The middle part of the telescopic arm is movably mounted on the support towards the midpoint of the line connecting the two limiting plates via a limiting device. The other end of the telescopic arm is connected to one end of a spring, and the other end of the spring is fixedly connected to the cutter.
3. The method for recycling and reusing rollers as described in claim 1, characterized in that, The drive mechanism includes a support and a hydraulic telescopic arm fixed to the support. The bottom of the hydraulic telescopic arm is provided with one end connected to a spring, and the other end of the spring is fixed to the cutter.
4. A method for recycling and reusing rollers as described in any one of claims 1-3, characterized in that, The drive mechanism transmits a force of 200N-240N to the cutter.
5. A method for recycling and reusing rollers as described in any one of claims 1-3, characterized in that, A storage bin is located directly above the base roller, and an openable outlet is located at the bottom of the storage bin; a crusher is located at the lower part of the vertical direction of the midpoint of the line connecting the two limiting plates; and a collection rack is located on the front side of the two limiting plates.
6. The method for recycling and reusing rollers as described in claim 1, characterized in that, The base is equipped with video capture devices on its left and right sides, and the field of view of these video capture devices covers the sides of the two lifting poles.