Pipe length cutting device and control method thereof
By introducing detection and adjustment mechanisms into the cutting equipment, the system can acquire and utilize pipe defect information in real time for automated cutting, solving the problems of intelligent adjustment and information gaps in the cutting of recycled pipes, and achieving efficient and precise pipe utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGU DOM PIPE LTD
- Filing Date
- 2026-05-19
- Publication Date
- 2026-06-26
AI Technical Summary
Existing cutting equipment cannot intelligently adjust the cutting plan according to the surface defect distribution of recycled pipes. There is an information gap between detection information and cutting execution, resulting in low pipe utilization and high labor costs.
The system uses a testing agency to acquire real-time defect and geometric feature information of the pipe surface. Through the cooperation of the control system and the adjustment mechanism, the position of the pipe relative to the cutting blade is automatically adjusted to achieve precise avoidance of defect areas and fixed-length cutting of good sections.
It has achieved automated defect identification, intelligent positioning and precise cutting of recycled pipes, which has improved pipe utilization, reduced labor costs and material waste, and improved processing efficiency and cutting accuracy.
Smart Images
Figure CN122274286A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pipe processing equipment technology, and in particular to a pipe fitting fixed-length cutting device and its control method. Background Technology
[0002] In the process of recycling and reusing metal pipes, the recycled pipes often have problems such as inconsistent lengths and local surface damage (such as pits, scratches, and indentations).
[0003] Existing cutting equipment is mainly designed for brand-new pipes and typically cuts sequentially at fixed lengths. It cannot intelligently adjust the cutting scheme according to the distribution of defects on the pipe surface, resulting in defective pipe sections being incorrectly cut into good products, or requiring manual pre-removal of defective sections, leading to low efficiency. Although some equipment integrates vision inspection modules, the inspection results are usually only used for defect alarms or offline statistics, failing to form a closed-loop control with the cutting execution mechanism. Inspection information cannot be directly and in real time transmitted to the adjustment mechanism and cutting blade, and the cutting action still relies on manual marking or fixed baffles. In addition, for the processing of recycled pipes, the current method mostly relies on manual visual inspection and marking of usable sections, which is labor-intensive, subjective, and difficult to meet the needs of large-scale recycling processing.
[0004] Therefore, there is an urgent need for a pipe fitting length cutting device that can integrate surface defect detection, intelligent planning of good product segments and automatic positioning and cutting, and whose detection information can directly drive the cutting execution. Summary of the Invention
[0005] In order to overcome the problems in the prior art that the cutting scheme cannot be intelligently adjusted according to the distribution of surface defects when cutting recycled pipes, and that there is an information gap between detection information and cutting execution, this application provides a pipe length cutting device and its control method.
[0006] In the first aspect, the pipe fitting length cutting device provided in this application adopts the following technical solution: A pipe length cutting device includes a cutting blade for cutting pipes, and further includes: A conveying mechanism is used to transport the pipe to be cut along the conveying direction; The detection mechanism is set on the conveying path of the conveying mechanism and is used to acquire defect information on the surface of the pipe and geometric feature information of the pipe during the pipe conveying process, and generate position data containing the defect information and the geometric feature information. A control system, electrically connected to the detection mechanism, is configured to receive and store the position data; An adjustment mechanism, located downstream of the detection mechanism, includes: Visual identification components are used to identify distinctive features on pipes. An adjustment drive assembly is used to adjust the relative position of the pipe relative to the cutting blade based on the recognition features identified by the vision recognition component and the position data stored in the control system.
[0007] By adopting the above technical solution, the testing mechanism is set on the conveying path of the conveying mechanism, the control system is electrically connected to the testing mechanism, and the adjusting mechanism is set downstream of the testing mechanism. During the pipe recycling process, the conveying mechanism transports the pipe to be cut along the conveying direction. The detection mechanism acquires the defect information and geometric feature information of the pipe surface in real time during the conveying process, and generates position data containing key data such as the defect location, which is then transmitted to the control system for storage. When the pipe reaches the adjustment mechanism, the vision recognition component automatically identifies the pipe end face or other natural features. The adjustment drive component precisely adjusts the relative position of the pipe with respect to the cutting blade based on the defect location data pre-stored in the control system and the reference features identified by the vision recognition component, so that the cutting blade can avoid the defect area and only cut the good section to a fixed length. In this solution, the detection information directly drives the cutting process in the form of data, without the need for physical marking or manual intervention. This overcomes the problems in existing technologies where the cutting scheme cannot be intelligently adjusted according to the surface defect distribution when cutting recycled pipes, and there is an information gap between the detection information and the cutting process. This solution realizes automated defect identification, intelligent positioning, and precise cutting of recycled pipes, effectively improving the utilization rate of pipes and reducing labor costs and material waste.
[0008] Preferably, the conveying mechanism includes a conveying component and a feeding roller rotatably disposed at the discharge port of the conveying component. A first recycling station is provided on one side of the feeding roller, and a waiting station is provided on the other side. The detection mechanism includes a detection component disposed between the conveying component and the feeding roller, and the control system is electrically connected to the detection component. The device further includes a sorting mechanism, which includes a feeding component and a first flipping component. The feeding component is used to transfer pipes that do not meet the cutting standards as determined by the inspection component to the first recycling station. The first flipping component transfers pipes that meet the cutting standards as determined by the inspection component to the waiting station. The control system is electrically connected to the feeding component and the first flipping component.
[0009] By adopting the above technical solution, the conveying roller is rotatably set at the outlet of the conveying component, a first recycling station is provided on one side of the conveying roller, a waiting station is provided on the other side, the detection component is set between the conveying component and the conveying roller, and the control system is electrically connected to the detection component, the unloading component, and the first flipping component. During the pipe recycling process, the pipe moves from the conveyor towards the feed roller. When it passes the detection unit, the detection unit collects defect information on the pipe surface in real time and sends it to the control system. The control system determines whether the pipe has recycling value based on the preset minimum length threshold of the good section. If it is determined that the pipe cannot be cut into a good section due to too many defects, the unloading component is controlled to transfer the pipe to the first recycling station for direct recycling. If it is determined that there is a usable good section in the pipe, the first flipping component is controlled to flip the pipe to the waiting station for subsequent straightness detection and cutting processes. This achieves rapid screening and diversion of recycled pipes, avoids ineffective processing of worthless pipes, and improves overall processing efficiency.
[0010] Preferably, it also includes a material transfer mechanism, which includes a material transfer frame disposed at the material waiting station and a stop block vertically slidably disposed on the material transfer frame. The height of the end of the material transfer frame near the conveying roller is higher than the height of the end of the material transfer frame away from the conveying roller. The control system is electrically connected to the stop block.
[0011] By adopting the above technical solution, the transfer rack is set at the waiting station, the height of the end of the transfer rack near the conveyor roller is higher than the height of the end of the transfer rack away from the conveyor roller, the stop block is vertically slidably set on the transfer rack, and the control system is electrically connected to the stop block. During the recycling process, when the first flipping component transfers the pipes that meet the cutting standards to the transfer rack, the pipes roll down the inclined transfer rack under the action of gravity. The stop block extends to prevent the pipes from continuing to slide down, thus achieving temporary storage of the pipes for inspection. After the previous pipe completes the straightness test and leaves the test station, the control system retracts the stop, the pipe is released and automatically slides to the next station for straightness testing; by using gravity to transport the pipe, no additional power is required, and the stop enables multiple pipes to be fed in sequence in an orderly manner, avoiding congestion and waiting, and improving the coordination of production rhythm.
[0012] Preferably, it further includes a straightness detection mechanism, which includes a transfer frame disposed at the discharge end of the transfer frame, a transfer roller rotatably disposed on the transfer frame, a laser emitter disposed on one side of the transfer frame, and a receiver disposed opposite to the laser emitter. The receiver is disposed on the other side of the transfer frame, and the light emission direction of the laser emitter is towards the receiver. The control system is electrically connected to the transfer roller, the laser emitter, and the receiver.
[0013] By adopting the above technical solution, the material conveyor is set at the discharge end of the transfer rack, the material conveyor roller is rotated on the material conveyor, the laser emitter is set on one side of the material conveyor, the receiver is set on the other side of the material conveyor, the receiver and the laser emitter are set opposite to each other, the light emission direction of the laser emitter is towards the receiver, and the control system is electrically connected to the material conveyor roller, the laser emitter and the receiver. During the recycling process, the pipe slides from the transfer rack onto the conveyor rack, the conveyor roller drives the pipe forward, and the laser emitter continuously emits laser light, which passes laterally through the pipe conveying path and irradiates the receiver. If the pipe axis is straight, its surface will not block or deflect the laser, and the receiver will receive the laser signal stably. If the pipe is bent, its protruding parts will block or deflect the laser, causing the receiver signal to weaken, be interrupted, or have an offset. The control system judges whether the straightness of the pipe is qualified in real time based on the changes in the receiver signal.
[0014] Preferably, a second recycling station is provided next to the laser emitter, the straightness detection mechanism includes a recycling frame provided at the second recycling station and a recycling roller rotatably provided on the recycling frame, the laser emitter is vertically slidably provided between the recycling frame and the material transfer frame, and the control system is electrically connected to the recycling roller.
[0015] By adopting the above technical solution, a second recycling station is set next to the laser emitter, a recycling rack is set at the second recycling station, a recycling roller is rotatably set on the recycling rack, the laser emitter is vertically slidably set between the recycling rack and the material transfer rack, and the control system is electrically connected to the recycling roller. During the pipe recycling process, the control system determines in real time whether the pipe straightness is up to standard based on the signal changes of the receiver. Unqualified pipes are rejected by the subsequent recycling rollers and sent to the second recycling station, while qualified pipes continue to be conveyed. This ensures that the pipes entering the cutting process have qualified straightness, improves the quality of the final product, and realizes the function of effectively classifying different defects in the pipes. Preferably, the adjustment mechanism includes a transfer frame disposed next to the transfer rack, a transfer roller rotatably disposed on the transfer frame, and a second flipping assembly. The adjustment drive assembly includes an adjustment frame disposed next to the transfer frame and an adjustment roller disposed on the adjustment frame. The second flipping assembly is used to transfer the tubing on the transfer roller to the adjustment roller. The visual recognition component is slidably disposed above the transfer roller and the adjustment roller. The cutting blade is disposed at the discharge port position of the adjustment frame. The control system is electrically connected to the transfer roller, the second flipping assembly, and the adjustment roller.
[0016] By adopting the above technical solution, the transfer frame is set next to the material transfer frame, the transfer roller is rotated on the transfer frame, the adjustment frame is set next to the transfer frame, the adjustment roller is set on the adjustment frame, the visual recognition component is slidably set above the transfer roller and the adjustment roller, the cutting blade is set at the discharge port of the adjustment frame, and the control system is electrically connected to the transfer roller, the second flipping component, and the adjustment roller. During the pipe recycling process, pipes that pass the straightness test are transported by the feed roller to the transfer roller for temporary storage; after the previous pipe is cut, the control system activates the second flipping component to flip the pipe on the transfer roller to the adjusting roller. The control system calculates the optimal cutting point of the cutting blade based on pre-stored defect location data and the reference position fed back by the visual recognition component. It then precisely adjusts the position of the pipe by sliding the adjusting roller to align the cutting blade with the target cutting line. Subsequently, the pipe is fed into the cutting station to complete the cutting, achieving precise avoidance of defect areas and fixed-length cutting of good sections, which greatly improves cutting accuracy and material utilization.
[0017] Preferably, a collection mechanism is provided next to the cutting blade. The collection mechanism includes a good product collection frame for collecting good pipes and a waste pipe collection frame for collecting waste pipes. The good product collection frame and the waste pipe collection frame are slidably disposed downstream of the cutting blade. The control system is electrically connected to a drive component that drives the good product collection frame and the waste pipe collection frame to slide horizontally.
[0018] By adopting the above technical solution, the good product collection box and the waste product collection box are slidably positioned downstream of the cutting blade. The control system is electrically connected to the drive component that drives the good product collection box and the waste product collection box to slide horizontally. During the pipe recycling process, after the cutting blade completes one cut, the control system automatically controls the drive component to drive the corresponding collection box to slide horizontally directly below the cutting blade's discharge port, based on whether the current cut segment belongs to the good product segment or the waste segment. Good product pipe segments enter the good product collection box, and waste product pipe segments enter the waste product collection box. When the collection box is full or needs to be replaced, it can be quickly slid and moved to achieve uninterrupted classified collection, effectively avoiding the mixing of good and waste products, eliminating the manual sorting process, and improving the automation and efficiency of pipe recycling processing.
[0019] Secondly, this application provides a method for controlling the fixed-length cutting of pipe fittings, which adopts the following technical solution: A method for controlling the fixed-length cutting of pipe fittings includes the following steps: S1: The pipe to be cut is conveyed along the conveying direction by the conveying mechanism. During the conveying process, the detection mechanism acquires the defect information on the surface of the pipe in real time and generates position data including the location of the defect. S2: The control system determines whether the current pipe has a recyclable good section based on the position data and the preset minimum length threshold of the good section; if it is determined that there is no recycling value, the control system controls the feeding component to transfer the pipe to the first recycling station and terminates the subsequent processing of the pipe; if it is determined that there is recycling value, the control system controls the first flipping component to transfer the pipe to the transfer rack at the waiting station and temporarily store it by the stop block. S3: When the pipe on the transfer rack is released to the straightness detection station, the laser emitter emits a laser, the receiver detects the laser signal, and the control system determines whether the straightness of the pipe is qualified based on whether the receiver receives the laser signal or the offset of the laser signal; if it is not qualified, the control system controls the recycling roller to transfer the pipe to the second recycling station and terminates the subsequent processing; if it is qualified, the pipe is transferred to the transfer rack for temporary storage. S4: After the pipe on the transfer frame is released, the second flipping component conveys the pipe to the adjusting roller. The visual recognition component identifies the identification features on the pipe, and the adjusting roller adjusts the relative position of the pipe with respect to the cutting blade according to the identification features and the position data stored in the control system. S5: The cutting blade cuts the pipe after it has been adjusted to the correct position. At the same time, the control system controls the good product collection box and the waste product collection box to slide horizontally according to the cutting result, so as to collect the good product pipe section and the waste product pipe section respectively.
[0020] By adopting the above technical solutions, the entire process of recycling pipe materials, from defect detection, value judgment, straightness screening, precise positioning to classification and cutting, has been automated, avoiding ineffective processing and manual intervention, and significantly improving the utilization rate of pipe materials and cutting accuracy.
[0021] Preferably, in step S3, the control system determines the straightness based on whether the receiver receives a laser signal: if the receiver can receive a laser signal and the received laser offset is within a preset range, it is determined to be qualified; otherwise, it is determined to be unqualified.
[0022] By adopting the above technical solution, a rapid, non-contact determination of the straightness of the pipe material is achieved, ensuring that the pipe material entering subsequent processes meets the straightness requirements.
[0023] Preferably, the identification features of the visual identification component in S4 include at least one of the pipe end face, surface natural features, or preset markings; the position data stored in the control system includes the boundary coordinates of the defect interval, and the adjusting roller calculates the target position of the cutting point based on the position of the pipe end face and the boundary coordinates of the defect.
[0024] By adopting the above technical solution, the adjusting roller can accurately calculate the cutting position based on the coordinates of the pipe end face and defect boundary, effectively avoiding the defect area and improving the accuracy of cutting the good product section and the material utilization rate.
[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. During the pipe recycling process, the conveying mechanism transports the pipe to be cut along the conveying direction. The detection mechanism acquires the defect information and geometric feature information of the pipe surface in real time during the conveying process, and generates position data containing key data such as defect location, which is then transmitted to the control system for storage. When the pipe reaches the adjustment mechanism, the vision recognition component automatically identifies the pipe end face or other natural features. The adjustment drive component precisely adjusts the relative position of the pipe with respect to the cutting blade based on the defect location data pre-stored in the control system and the reference features identified by the vision recognition component, so that the cutting blade can avoid the defect area and only cut the good section to a fixed length. In this solution, the detection information directly drives the cutting execution in the form of data, without the need for physical marking or manual intervention. This overcomes the problems in existing technologies where the cutting scheme cannot be intelligently adjusted according to the surface defect distribution when cutting recycled pipes, and there is an information gap between the detection information and the cutting execution. It realizes automated defect identification, intelligent positioning and precise cutting of recycled pipes, effectively improving the utilization rate of pipes and reducing labor costs and material waste. 2. During the pipe recycling process, the pipe moves from the conveyor towards the feed roller. When it passes the detection unit, the detection unit collects defect information on the pipe surface in real time and sends it to the control system. The control system determines whether the pipe has recycling value based on the preset minimum length threshold for good-quality segments. If it is determined that the pipe cannot be cut into good-quality segments due to too many defects, the unloading component is controlled to transfer the pipe to the first recycling station for direct recycling. If it is determined that there are usable good-quality segments in the pipe, the first flipping component is controlled to flip the pipe to the waiting station for subsequent straightness detection and cutting processes. This achieves rapid screening and diversion of recycled pipes, avoids ineffective processing of worthless pipes, and improves overall processing efficiency. 3. During the pipe recycling process, pipes that pass the straightness test are transported by the feed roller to the transfer roller for temporary storage; after the previous pipe is cut, the control system starts the second flipping component to flip the pipe on the transfer roller to the adjusting roller. The control system calculates the optimal cutting point of the cutting blade based on pre-stored defect location data and the reference position fed back by the visual recognition component. It then precisely adjusts the position of the pipe by sliding the adjusting roller to align the cutting blade with the target cutting line. Subsequently, the pipe is fed into the cutting station to complete the cutting, achieving precise avoidance of defect areas and fixed-length cutting of good sections, which greatly improves cutting accuracy and material utilization. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of a pipe length cutting device according to an embodiment of this application.
[0027] Figure 2 This is a schematic diagram of the connection structure of the detection mechanism in an embodiment of this application.
[0028] Figure 3 This is a schematic diagram of the connection structure of the material transfer mechanism in the embodiments of this application.
[0029] Figure 4This is a schematic diagram showing the positions of the transfer roller and the recovery roller in the embodiments of this application.
[0030] Figure 5 This is a schematic diagram of the connection structure of the adjustment mechanism in the embodiments of this application.
[0031] Explanation of reference numerals in the attached figures: 1. Conveying mechanism; 11. Conveying component; 12. Feeding roller; 13. First recycling station; 14. Waiting station; 2. Detection mechanism; 21. Mounting ring; 22. Detection component; 3. Adjustment mechanism; 31. Transfer frame; 32. Transfer roller; 33. Second flipping assembly; 331. Flipping bar; 34. Vision recognition component; 35. Adjustment drive assembly; 351. Adjustment frame; 352. Adjustment roller; 4. Cutting knife; 5. Sorting mechanism; 51. Lower... 511. Material feeding assembly; 512. Material feeding roller; 513. Tilting component; 52. First tilting assembly; 521. Tilting plate; 6. Material transfer mechanism; 61. Material transfer frame; 62. Stop block; 7. Straightness detection mechanism; 71. Material transfer frame; 72. Material transfer roller; 73. Laser emitter; 74. Receiver; 75. Tilting plate; 76. Recycling frame; 77. Recycling roller; 8. Collection mechanism; 81. Good product collection box; 82. Waste product collection box. Detailed Implementation
[0032] The present application will be further described in detail below with reference to the accompanying drawings.
[0033] This application discloses a pipe fitting length cutting device. (Refer to...) Figure 1 As shown, a pipe fitting fixed-length cutting device includes a frame, a conveying mechanism 1, a detection mechanism 2, a control system, an adjustment mechanism 3, a cutting blade 4, a sorting mechanism 5, a material transfer mechanism 6, a straightness detection mechanism 7, and a collection mechanism 8.
[0034] Reference Figure 1 As shown, the conveying mechanism 1 includes a conveying component 11 and a conveying roller 12. The conveying roller 12 is rotatably disposed at the outlet of the conveying component 11. A first recycling station 13 is provided on one side of the conveying roller 12, and a waiting station 14 is provided on the other side. The conveying component 11 is used to convey the recycled pipes to be cut one by one along the conveying direction. In this embodiment, the conveying component 11 is the prior art and will not be described in detail here. Multiple conveying rollers 12 are provided, and the multiple conveying rollers 12 are evenly distributed at equal distances along the discharge direction of the discharge port of the conveying component 11.
[0035] Reference Figure 1 and Figure 2As shown, the detection mechanism 2 includes a mounting ring 21 and a detection element 22. The mounting ring 21 is disposed between the conveyor 11 and the feed roller 12, and the detection element 22 is disposed inside the mounting ring 21. In this embodiment, two detection elements 22 are preferably provided, and the two detection elements 22 are symmetrical about the axis of the mounting ring 21. The detection element 22 can be a visual inspection sensor (such as an industrial camera), a laser profile scanner, or an eddy current detection probe. The detection component 22 is used to acquire in real time the defect information (such as the location and size of pits and scratches) and geometric feature information (such as pipe diameter and end face position) of the pipe surface during the pipe transportation process. The detection component 22 generates position data containing defect information and geometric feature information from the collected data and sends it to the control system.
[0036] Reference Figure 1 , Figure 2 and Figure 3 As shown, the sorting mechanism 5 includes a feeding assembly 51 and a first flipping assembly 52. The feeding assembly 51 includes a feeding frame 511, a feeding roller 512 and a flipping component 513. The feeding frame 511 is located next to the feeding roller 12 and is located at the first recycling station 13. The feeding roller 512 is rotatably mounted on the feeding frame 511. Multiple feeding rollers 512 are provided and are evenly distributed at equal distances along the length of the feeding frame 511. Multiple flippers 513 are provided, and multiple flippers 513 are rotatably arranged next to the feeding roller 12. Multiple flippers 513 are evenly distributed at equal distances along the length direction of the unloading rack 511. The flippers 513 are used to transfer the pipes that are determined by the inspection piece 22 to not meet the cutting standard (i.e., due to too many defects, no good product section with a length ≥ the shortest length threshold can be cut) to the unloading roller 512 of the unloading rack 511. The first flipping assembly 52 includes a flipping plate 521. Multiple flipping plates 521 are provided. The multiple flipping plates 521 are rotatably arranged next to the feeding roller 12. The multiple flipping plates 521 are evenly distributed at equal distances along the length direction of the unloading rack 511. The flipping plates 521 are arranged between the feeding roller 12 and the waiting station 14. The flipping plates 521 are used to flip the pipes that have been determined by the inspection piece 22 to meet the cutting standards to the waiting station 14. The material transfer mechanism 6 includes a material transfer frame 61 and a stop block 62. The material transfer frame 61 is set at the material waiting station 14. The height of the end of the material transfer frame 61 near the conveying roller 12 is higher than the height of the end away from the conveying roller 12, thus forming an inclined slide. The stop block 62 is vertically slidably set on the material transfer frame 61 by a cylinder. When the first flipping component 52 delivers the qualified pipe to the transfer rack 61, the pipe rolls along the inclined plane under the action of gravity and is temporarily blocked and stored by the extended stop 62. When the previous pipe completes the straightness test, the stop 62 retracts and releases the pipe so that it automatically slides to the next station.
[0037] Reference Figure 1 , Figure 3 and Figure 4 As shown, the straightness detection mechanism 7 includes a material transfer frame 71, a material transfer roller 72, a laser emitter 73, a receiver 74, a flipping plate 75, a recycling frame 76, and a recycling roller 77; the material transfer frame 71 is located at the discharge end of the transfer frame 61, the material transfer roller 72 is rotatably mounted on the material transfer frame 71, and multiple material transfer rollers 72 are provided, which are evenly distributed at equal distances along the length of the transfer frame 61; A laser emitter 73 is disposed on one side of the material conveyor 71, and a receiver 74 is disposed on the other side of the material conveyor 71. The receiver 74 is disposed opposite to the laser emitter 73, and the light emission direction of the laser emitter 73 is directed toward the receiver 74. The light emission direction of the laser emitter 73 intersects with the pipe conveying direction. In this embodiment, it is preferably perpendicular to the pipe conveying direction, so that the laser passes laterally through the pipe conveying path. Multiple flipping plates 75 are provided, all of which are rotatably mounted on the transfer rack 71. The multiple flipping plates 75 are evenly distributed at equal intervals along the length of the transfer rack 71. The flipping plates 75 can flip and slide the pipe from the transfer rack 71 to the next station. After the tube slides from the transfer rack 61 onto the transfer rack 71, the transfer roller 72 moves the tube and the laser emitter 73 continuously emits laser. If the tube axis is straight, the laser beam is not blocked or deflected, and the receiver 74 receives the laser signal stably. If the tube is bent, its protruding part will block or deflect the laser, causing the receiver 74 signal to weaken, be interrupted, or have an offset. A second recycling station is provided on the side of the laser emitter 73. A recycling rack 76 is set at the second recycling station. A recycling roller 77 is rotatably set on the recycling rack 76. Multiple recycling rollers 77 are provided and are evenly distributed at equal distances along the length of the recycling rack 76. The laser emitter 73 is vertically slidably positioned between the recycling rack 76 and the conveyor rack 71 by a cylinder. Its height can be adjusted according to different pipe diameters. When the straightness of the pipe is not up to standard, the laser emitter 73 is adjusted to move downward, transferring the unqualified pipe on the conveyor roller 72 to the recycling roller 77. The recycling roller 77 then transfers the pipe to the second recycling station for recycling. Qualified pipes are then conveyed backward by the conveyor roller 72.
[0038] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the adjustment mechanism 3 includes a transfer frame 31, a transfer roller 32, a second flipping component 33, a vision recognition component 34, and an adjustment drive component 35. The transfer frame 31 is located next to the material transfer frame 71, and the transfer roller 32 is rotatably mounted on the transfer frame 31. Multiple transfer rollers 32 are provided, and the multiple transfer rollers 32 are evenly distributed at equal distances along the length direction of the transfer frame 31. The second flipping component 33 includes a flipping bar 331. Multiple flipping bars 331 are provided and are rotatably mounted on the transfer frame 31. The multiple flipping bars 331 are evenly distributed at equal distances along the length of the transfer frame 31. In this embodiment, the flipping component 513, the flipping plate 521, and the flipping bars 331 are all driven to rotate by an electric lever structure. This is existing technology and will not be described in detail here.
[0039] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the adjustment drive assembly 35 includes an adjustment frame 351 and an adjustment roller 352. The adjustment frame 351 is located next to the transfer frame 31. Multiple adjustment rollers 352 are provided, and all multiple adjustment rollers 352 are rotatably mounted on the adjustment frame 351. The multiple adjustment rollers 352 are evenly distributed at equal distances along the length direction of the adjustment frame 351. The flip bar 331 is used to transfer the tube on the transfer roller 32 to the adjusting roller 352. The visual recognition component 34 (preferably an industrial camera in this embodiment) is slidably disposed above the transfer roller 32 and the adjusting roller 352 to identify the identification features on the tube. The identification features include at least one of the tube end face, surface natural texture or preset mark. In this embodiment, the identification features include the tube end face and the preset mark, which is a mark made on the tube in advance. The cutting blade 4 is located at the discharge port of the adjusting frame 351. The cutting blade 4 is a circular saw and is driven up and down by the cutting drive mechanism. The collecting mechanism 8 includes a good product collecting frame 81 for collecting good pipes and a waste collecting frame 82 for collecting waste pipes (including defective sections and good sections with insufficient length). The two can slide in the horizontal direction. Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the control system (an industrial computer is used in this embodiment) is electrically connected to the conveyor 11, the conveying roller 12, the detection component 22, the unloading roller 512, the flipping component 513, the flipping plate 521, the stop block 62, the transfer roller 72, the laser emitter 73, the receiver 74, the recycling roller 77, the transfer roller 32, the flipping bar 331, the vision recognition component 34, the adjusting roller 352, the cutting blade 4, and the driving component that drives the collection frame to slide. The control system is configured to receive and store position data transmitted from the detection element 22, and determine whether the pipe has recyclable good segments based on a preset minimum length threshold for good segments. During the cutting process, after each segment is cut, the control system automatically controls the corresponding collection frame to slide directly below the discharge port of the cutting blade 4, depending on whether the current cut segment is a good segment or a defective segment, so that the cut pipe segment falls into the corresponding collection frame. When the collection frame is full, a spare frame can be quickly switched to achieve uninterrupted operation.
[0040] The implementation principle of the pipe fitting fixed-length cutting device in this application embodiment is as follows: The conveyor 11 transports the recycled pipes one by one to the inspection unit 22, which acquires defect and geometric information and generates position data. The control system determines whether the pipes have recycling value—if not, the unloading component 51 rejects them and moves them to the first recycling station 13; if they have value, the first flipping component 52 sends them to the transfer rack 61 for temporary storage. The stop block 62 sequentially releases the pipes to the straightness inspection station, where the laser emitter 73 and receiver 74 work together to determine straightness. Unqualified pipes are sent to the second recycling station by the recycling roller 77, while qualified pipes are temporarily stored in the transfer roller 32. The second flipping component 33 sends them to the adjusting roller 352, where the vision recognition component 34 identifies the end face. The control system adjusts the pipe position based on the defect coordinates so that the cutting blade 4 is aligned with the cutting point. After cutting, the good sections are placed in the good section collection box 81, and the defective sections are placed in the defective section collection box 82. This achieves fully automated screening, inspection, positioning, cutting, and sorting collection of recycled pipes.
[0041] This application also discloses a method for controlling fixed-length cutting of pipe fittings, including the following steps: S1: The pipe to be cut is conveyed along the conveying direction by the conveying mechanism 1. During the conveying process, the detection mechanism 2 obtains the defect information on the surface of the pipe in real time and generates position data containing the location of the defects. S2: The control system determines whether the current pipe has a recyclable good section based on the position data and the preset minimum length threshold of the good section. If it is determined that there is no recycling value, the control system controls the unloading component 51 to transfer the pipe to the first recycling station 13 and terminates the subsequent processing of the pipe. If it is determined that there is recycling value, the control system controls the first flipping component 52 to transfer the pipe to the transfer rack 61 of the waiting station 14 and temporarily store it by the stop block 62. S3: When the pipe on the transfer rack 61 is released to the straightness detection station, the laser emitter 73 emits a laser, the receiver 74 detects the laser signal, and the control system determines whether the straightness of the pipe is qualified based on whether the receiver 74 receives the laser signal or the offset of the laser signal; if it is not qualified, the recovery roller 77 is controlled to transfer the pipe to the second recovery station and the subsequent processing is terminated; if it is qualified, the pipe is transferred to the transfer rack 31 for temporary storage. S4: When the pipe on the transfer frame 31 is released, the second flipping component 33 conveys the pipe to the adjusting roller 352. The visual recognition component 34 recognizes the recognition features on the pipe. The adjusting roller 352 adjusts the relative position of the pipe to the cutting blade 4 according to the recognition features and the position data stored in the control system. S5: The cutting blade 4 cuts the pipe after it has been adjusted to the correct position. At the same time, the control system controls the good product collection box 81 and the waste product collection box 82 to slide horizontally according to the cutting result, so as to collect the good product pipe section and the waste product pipe section respectively.
[0042] It has achieved fully automated control of the entire process of recycling pipes, from defect detection, value judgment, straightness screening, precise positioning to classification and cutting, avoiding ineffective processing and manual intervention, and significantly improving the utilization rate of pipes and cutting accuracy.
[0043] In S3, the control system determines the straightness based on whether the receiver 74 receives a laser signal: if the receiver 74 can receive a laser signal and the received laser offset is within the preset range, it is judged as qualified; otherwise, it is judged as unqualified. This realizes the rapid, non-contact determination of the straightness of the pipe, ensuring that the pipe entering the subsequent process meets the straightness requirements.
[0044] The visual recognition feature identified by the visual recognition component 34 in S4 includes at least one of the pipe end face, natural surface features, or preset markings; the position data stored in the control system includes the boundary coordinates of the defect interval, and the adjusting roller 352 calculates the target position of the cutting point based on the position of the pipe end face and the boundary coordinates of the defect; The adjusting roller 352 can accurately calculate the cutting position based on the coordinates of the pipe end face and defect boundary, effectively avoiding defect areas and improving the accuracy of cutting good-quality sections and material utilization.
[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A pipe length cutting device comprising a cutting knife (4) for cutting a pipe, characterized in that, Also includes: The conveying mechanism (1) is used to convey the pipe to be cut along the conveying direction; The detection mechanism (2) is set on the conveying path of the conveying mechanism (1) and is used to obtain the defect information of the pipe surface and the geometric feature information of the pipe during the pipe conveying process, and generate position data containing the defect information and the geometric feature information. The control system, electrically connected to the detection mechanism (2), is configured to receive and store the position data; An adjustment mechanism (3), located downstream of the detection mechanism (2), includes: Visual identification component (34) is used to identify identification features on the pipe; Adjustment drive assembly (35) is used to adjust the relative position of the pipe relative to the cutting blade (4) based on the identification features identified by the vision recognition element (34) and the position data stored in the control system.
2. A pipe length cutting apparatus according to claim 1, wherein: The conveying mechanism (1) includes a conveying component (11) and a conveying roller (12) rotatably disposed at the outlet of the conveying component (11). The conveying roller (12) has a first recycling station (13) on one side and a waiting station (14) on the other side. The detection mechanism (2) includes a detection component (22) disposed between the conveying component (11) and the conveying roller (12). The control system is electrically connected to the detection component (22). The device further includes a sorting mechanism (5), which includes a feeding component (51) and a first flipping component (52). The feeding component (51) is used to transfer the pipe fittings that do not meet the cutting standard as determined by the detection component (22) to the first recycling station (13). The first flipping component (52) transfers the pipe fittings that meet the cutting standard as determined by the detection component (22) to the waiting station (14). The control system is electrically connected to the feeding component (51) and the first flipping component (52).
3. A pipe length cutting apparatus according to claim 2, wherein: It also includes a material transfer mechanism (6), which includes a material transfer frame (61) disposed at the material waiting station (14) and a stop block (62) vertically slidably disposed on the material transfer frame (61). The height of the end of the material transfer frame (61) near the conveying roller is higher than the height of the end of the material transfer frame (61) away from the conveying roller. The control system is electrically connected to the stop block (62).
4. A pipe length cutting apparatus according to claim 3, wherein: It also includes a straightness detection mechanism (2), which includes a material transfer frame (71) disposed at the discharge end of the transfer frame (61), a material transfer roller (72) rotatably disposed on the material transfer frame (71), a laser emitter (73) disposed on one side of the material transfer frame (71), and a receiver (74) disposed opposite to the laser emitter (73). The receiver (74) is disposed on the other side of the material transfer frame (71), and the light emission direction of the laser emitter (73) is towards the receiver (74). The control system is electrically connected to the material transfer roller (72), the laser emitter (73), and the receiver (74).
5. A pipe fitting fixed-length cutting device according to claim 4, characterized in that: A second recycling station is provided next to the laser emitter (73). The straightness detection mechanism (7)(2) includes a recycling rack (76) located at the second recycling station and a recycling roller (77) rotatably mounted on the recycling rack (76). The laser emitter (73) is vertically slidably mounted between the recycling rack (76) and the material transfer rack (71). The control system is electrically connected to the recycling roller (77).
6. A pipe fitting length cutting device according to claim 4, characterized in that: The adjustment mechanism (3) includes a transfer frame (31) disposed next to the transfer frame (71), a transfer roller (32) rotatably disposed on the transfer frame (31), and a second flipping assembly (33). The adjustment drive assembly (35) includes an adjustment frame (351) disposed next to the transfer frame (31) and an adjustment roller (352) disposed on the adjustment frame (351). The second flipping assembly (33) is used to transfer the pipe on the transfer roller (32) to the adjustment roller (352). The visual recognition component (34) is slidably disposed above the transfer roller (32) and the adjustment roller (352). The cutting blade (4) is disposed at the discharge port position of the adjustment frame (351). The control system is electrically connected to the transfer roller (32), the second flipping assembly (33), and the adjustment roller (352).
7. A pipe fitting length cutting device according to claim 6, characterized in that: A collection mechanism (8) is provided next to the cutting blade (4). The collection mechanism (8) includes a good product collection frame (81) for collecting good pipes and a waste pipe collection frame (82) for collecting waste pipes. The good product collection frame (81) and the waste pipe collection frame (82) are slidably disposed downstream of the cutting blade (4). The control system is electrically connected to a drive component that drives the good product collection frame (81) and the waste pipe collection frame (82) to slide horizontally.
8. A control method for a pipe fitting fixed-length cutting device, using the device according to any one of claims 1 to 7, characterized in that, Includes the following steps: S1: The pipe to be cut is conveyed along the conveying direction by the conveying mechanism (1). During the conveying process, the detection mechanism (2) obtains the defect information on the surface of the pipe in real time and generates position data containing the defect location. S2: The control system determines whether the current pipe has a recyclable good section based on the location data and the preset minimum length threshold of the good section; if it is determined that there is no recycling value, the control system controls the unloading component (51) to transfer the pipe to the first recycling station (13) and terminates the subsequent processing of the pipe; if it is determined that there is recycling value, the control system controls the first flipping component (52) to transfer the pipe to the transfer rack (61) of the waiting station (14) and temporarily store it by the stop block (62); S3: When the pipe on the transfer rack (61) is released to the straightness detection station, the laser emitter (73) emits a laser, the receiver (74) detects the laser signal, and the control system judges whether the straightness of the pipe is qualified based on whether the receiver (74) receives the laser signal or the offset of the laser signal; if it is not qualified, the recovery roller (77) is controlled to transfer the pipe to the second recovery station and the subsequent processing is terminated; if it is qualified, the pipe is transferred to the transfer rack (31) for temporary storage. S4: When the pipe on the transfer frame (31) is released, the second flipping component (33) will transfer the pipe to the adjusting roller (352). The visual recognition component (34) will identify the identification features on the pipe. The adjusting roller (352) will adjust the relative position of the pipe to the cutting blade (4) according to the identification features and the position data stored in the control system. S5: The cutting blade (4) cuts the pipe after it has been adjusted to the correct position. At the same time, the control system controls the good product collection box (81) and the waste product collection box (82) to slide horizontally according to the cutting result, so as to collect the good product pipe section and the waste product pipe section respectively.
9. The control method for a pipe fitting fixed-length cutting device according to claim 8, characterized in that: In S3, the control system determines the straightness based on whether the receiver (74) receives the laser signal: if the receiver (74) can receive the laser signal and the received laser offset is within the preset range, it is determined to be qualified; otherwise, it is determined to be unqualified.
10. The control method for a pipe fitting fixed-length cutting device according to claim 8, characterized in that: The visual recognition feature identified by the visual recognition component (34) in S4 includes at least one of the pipe end face, surface natural features, or preset markings; the position data stored in the control system includes the boundary coordinates of the defect interval, and the adjusting roller (352) calculates the target position of the cutting point based on the position of the pipe end face and the boundary coordinates of the defect.