An intelligent cutting system based on machine vision

Abstract

The application discloses an intelligent cutting system based on machine vision and belongs to the technical field of cutting. The intelligent cutting system comprises a cutting table, the upper surface of the cutting table is respectively provided with an n-shaped frame and two groups of guide plates at both ends, four groups of guide rail rods are symmetrically and fixedly installed at both ends in the n-shaped frame, the outer surfaces of the four groups of guide rail rods are assembled with cutting-off mechanisms through linear sliding pairs, the cutting-off mechanisms can linearly reciprocate along the guide rail rods and can form shearing cooperation with a lower cutting plate arranged at one end of the cutting table, two groups of bite-in mechanisms are installed between the two groups of guide plates through a transmission connection mode, one end of each guide plate is fixedly installed with a Y-shaped frame, and a cloth reel supporting structure is formed between the two groups of Y-shaped frames. Through the design of the cutting-off mechanism, the bite-in mechanism and the cutting mechanism, the integrated mode of "conveying-cutting-segmentation" is realized, the split state of "motion-stillness" in traditional cutting is broken, and efficient production and stable operation of equipment are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting, in particular to an intelligent cutting system based on machine vision. BACKGROUND

[0002] Cutting machine, with motor belt knife operation, laser beam, high pressure water injection and die cutting mode of cutting, punching into the shape of processing equipment. Including electric cutting knife, cutting machine and automatic cutting machine, etc. Cutting knife with electric instead of manual scissors cutting fabric tool. According to the form of blade can be divided into straight knife, round knife, angle knife and belt knife. With the help of workbench, manual way to complete the cutting of multi-layer fabric. Cutting table with cutting device workbench. Due to the diversification of cutting form, cutting table can be divided into cutting machine, oil pressure cutting machine, automatic laser cutting machine, combined cutting bed and vacuum cutting bed, etc.

[0003] The Chinese authorized patent with publication number CN220971121U discloses an automatic cloth cutting device, which relates to the technical field of cloth production. The automatic cloth cutting device comprises a center shaft of a screw rod bearing seat connected to the outer surface of the adjusting screw rod through a bearing, a rod seat fixed at the two ends of the screw rod bearing seat, a sliding rod fixed at the top of the rod seat, a sliding block seat slidably connected to the outer surface of the two groups of sliding rods, a threaded groove matched with the adjusting screw rod formed in the center of the sliding block seat, and the adjusting screw rod is threadedly connected with the sliding block seat. The automatic cutting device has a cloth pressing assembly, so that the end of the cut cloth is always kept below the cloth pressing roller, and the feeding of the cloth is completed again through the conveying belt, ensuring the continuity in the next process. The cloth is compounded together through the further assembly.

[0004] However, the above-mentioned automatic cloth cutting device can only cut in a single dimension along the length direction of the cloth, and cannot simultaneously complete the forming cutting of the initial shape of the clothes, such as the neckline, the cuff and the hem contour. Therefore, secondary cutting by manual or additional equipment is still needed, which increases the complexity of the process and the time cost. SUMMARY

[0005] The present application aims to provide an intelligent cutting system based on machine vision to solve the problem that the above-mentioned automatic cloth cutting device can only cut in a single dimension along the length direction of the cloth, and cannot simultaneously complete the forming cutting of the initial shape of the clothes, such as the neckline, the cuff and the hem contour, resulting in the need for secondary cutting by manual or additional equipment, which causes the process to be fragmented and the production cycle to be prolonged.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The application discloses an intelligent cutting system based on machine vision, which comprises a cutting table, the upper surface of the cutting table is provided with an n-shaped frame and two groups of guide plates at both ends, respectively, four groups of guide rail rods are symmetrically and fixedly installed at both ends in the n-shaped frame, a cutting-off mechanism is assembled on the outer surface of the four groups of guide rail rods through a linear sliding pair, the cutting-off mechanism can make linear reciprocating motion along the guide rail rod and can form shearing cooperation with the lower cutter plate arranged at one end of the cutting table, two groups of bite-in mechanisms are installed between the two groups of guide plates through a transmission connection mode, one end of the guide plate is fixedly installed with a Y-shaped frame, a cloth roll supporting structure is formed between the two groups of Y-shaped frames, and the cloth roll is used for placing cloth rolls, so that the cloth can be continuously conveyed under the driving of the transmission roller of the bite-in mechanism.

[0008] The intelligent cutting system based on machine vision, wherein: one end of the inner side of the two groups of guide plates is fixedly installed with a connecting rod, a first L-shaped seat is fixedly installed between the two groups of connecting rods, one end of the n-shaped frame is fixedly installed with a second L-shaped seat, a camera is fixedly installed on the lower surface of the first L-shaped seat and the second L-shaped seat, and a cutting mechanism is fixedly installed between the first L-shaped seat and the second L-shaped seat, the cutting end of the cutting mechanism is located at the upper end of the cutting table and is designed to be left-right symmetrical, when the cloth is supplied on the surface of the cutting table, the cloth is in the monitoring range of the camera, the two groups of cameras synchronously collect real-time image data of both sides of the cloth, the control system identifies the left and right boundaries of the cloth through an edge detection algorithm, and calculates the central axis of the cloth as a symmetry reference;

[0009] The camera continuously tracks feature points on the cloth, such as textures and marker lines, the system generates left-right symmetrical cutting trajectories by mirroring the template path along the central axis based on a preset clothing template such as a collar and a sleeve opening contour, the left-right symmetrical cutting ends of the cutting mechanism synchronously execute the cutting action according to the real-time data of visual feedback, and the two sides of the cloth are accurately cut into completely symmetrical initial clothing shapes, in the whole process, the camera serves as a monitoring unit of a closed-loop control system, continuously monitors the position of the cloth and adjusts the cutting path in real time, effectively compensates mechanical errors and cloth deformation, and realizes high-precision symmetrical cutting effect;

[0010] The monitoring range of the camera installed on the lower surface of the first L-shaped seat covers the area of the lower cutter plate of the cutting table, when the cloth is cut, the cloth is continuously supplied by the bite-in mechanism and conveyed to the cutting-off mechanism through the cutting table, when the length of the cloth conveyed into the cutting-off mechanism reaches a preset threshold, the camera captures the state that the length of the cloth reaches the preset threshold in real time and sends a trigger signal to the control system, and the control system drives the cutting-off mechanism to slide against the lower cutter plate after receiving the signal, so that the cutting action of the cloth between the two is realized.

[0011] The intelligent cutting system based on machine vision, wherein: the cutting mechanism comprises a hydraulic rod rotatably installed on the upper surface of the n-shaped frame, the piston rod of the hydraulic rod is rotatably connected with a first connecting arm at one end, the middle section of the first connecting arm is rotatably installed on the inner side wall of the n-shaped frame through a hinged shaft, forming a lever fulcrum structure; the other end of the first connecting arm is rotatably connected with a second connecting arm through a joint bearing, the other end of the second connecting arm is rotatably installed on the upper surface of the mounting plate; the mounting plate is slidably sleeved on the outer surface of the four groups of guide rail rods through a linear bearing, forming a linear sliding pair; the upper knife plate is fixedly installed on the lower surface of the mounting plate, and the blade plane of the upper knife plate and the blade plane of the lower knife plate are in the same horizontal shearing plane.

[0012] The intelligent cutting system based on machine vision, wherein: the hinged part of the first connecting arm and the second connecting arm is sleeved with a horizontal plate, when the hydraulic rod performs telescopic motion, the first connecting arm is driven to perform rotary motion around the hinged fulcrum of the middle section and the n-shaped frame, the other end of the first connecting arm drives the second connecting arm to move through the hinged pair, and the other end of the second connecting arm drives the mounting plate to perform linear reciprocating sliding along the four groups of guide rail rods through the rotary pair, so that the upper knife plate and the lower knife plate fixed on the lower surface of the mounting plate form shearing cooperation, and the cloth cutting function is realized.

[0013] The intelligent cutting system based on machine vision, wherein: a plurality of groups of springs are uniformly fixed on the other end of the lower surface of the mounting plate, the lower end of the spring is fixedly connected with the upper surface of the pressing plate, the upper surface of the pressing plate is vertically fixed with a guide column, the upper end of the guide column is slidably inserted into the mounting plate and extends above the mounting plate, and the spring is sleeved on the outer periphery of the guide column.

[0014] The intelligent cutting system based on machine vision, wherein: the cutting mechanism comprises a hydraulic rod rotatably installed on the upper surface of the n-shaped frame, the piston rod of the hydraulic rod is rotatably connected with a first connecting arm at one end, the middle section of the first connecting arm is rotatably installed on the inner side wall of the n-shaped frame through a hinged shaft, forming a lever fulcrum structure; the other end of the first connecting arm is rotatably connected with a second connecting arm through a joint bearing, the other end of the second connecting arm is rotatably installed on the upper surface of the mounting plate; the mounting plate is slidably sleeved on the outer surface of the four groups of guide rail rods through a linear bearing, forming a linear sliding pair; the upper knife plate is fixedly installed on the lower surface of the mounting plate, and the blade plane of the upper knife plate and the blade plane of the lower knife plate are in the same horizontal shearing plane.

[0015] The machine vision-based intelligent cutting system, wherein: the other end of the second roller is fixedly installed with a first transmission disc, the first transmission disc is in transmission connection with a second transmission disc through a synchronous belt, the second transmission disc is fixedly installed at the end of one of the two groups of transmission columns, the two groups of transmission columns are rotatably installed in the cutting table through bearings, and the outer periphery of the two groups of transmission columns is sleeved with a conveying belt, when the second roller rotates, the conveying belt is driven to move synchronously through the first transmission disc, the synchronous belt and the second transmission disc, and the conveying function of the cloth is realized.

[0016] The machine vision-based intelligent cutting system, wherein: the cutting mechanism comprises a linear module fixedly installed between the first L-shaped seat and the second L-shaped seat, a connecting barrel is fixedly installed on the lower surface of the mover seat of the linear module, a forward and reverse tooth bidirectional screw rod is rotatably installed in the connecting barrel through a bearing, the two ends of the forward and reverse tooth bidirectional screw rod are respectively provided with outer threads in opposite rotation directions, and a fastening sleeve is threadedly connected to the two ends of the forward and reverse tooth bidirectional screw rod, and a YAG laser is fixedly installed in the fastening sleeve.

[0017] The machine vision-based intelligent cutting system, wherein: one end of the connecting barrel is fixedly installed with a second motor, and the output shaft of the second motor penetrates into the connecting barrel and is fixedly connected to the end of the forward and reverse tooth bidirectional screw rod.

[0018] The machine vision-based intelligent cutting system, wherein: the center distances of the two groups of fastening sleeves and the forward and reverse tooth bidirectional screw rod are equal, when the second motor drives the forward and reverse tooth bidirectional screw rod to rotate, the two groups of YAG lasers move synchronously towards or away from each other along the forward and reverse tooth bidirectional screw rod, and the symmetrical cutting function is realized.

[0019] Compared with the prior art, the machine vision-based intelligent cutting system has the following beneficial effects:

[0020] The machine vision-based intelligent cutting system realizes efficient and accurate cloth cutting and cutting through the collaborative design and automatic control of multiple components, and the technical effects mainly reflect in the following aspects:

[0021] 1. Full-process automation and high-efficiency production: the system constructs an integrated mode of "conveying-cutting-segmentation", and the cloth is automatically operated from the placement of the roll, the biting into the conveying, the intelligent cutting to the accurate cutting, the broken state of the traditional cutting "movement-stillness" is eliminated, the production efficiency is greatly improved, and the manual intervention and operation error are reduced.

[0022] 2. High-precision cutting and positioning: With the aid of machine vision technology, the camera captures real-time images of the fabric, accurately identifies the boundary and calculates the center axis through edge detection and feature point tracking, and generates a symmetrical cutting trajectory in cooperation with the pre-set clothing template. The cutting mechanism realizes cutting error ≤0.1mm through high-precision transmission of the lead screw and linear module, ensuring the cutting of left and right symmetrical high-precision initial clothing shape.

[0023] 3. Stable and reliable cutting function: The cutting mechanism adopts hydraulic drive and connecting rod transmission structure, through "monitoring-triggering-pressing-cutting-resetting" closed loop control, when the fabric reaches the preset length, the pressing plate cooperates with the spring to stabilize and fix the fabric, avoiding displacement or wrinkles during cutting, then the upper and lower knife plates cooperate to complete the neat cutting, ensuring cutting accuracy and fabric quality.

[0024] 4. Flexible and stable fabric conveying: The biting mechanism adjusts the pressure of the double roller pressing column flexibly through the electric push rod, ensuring uniform stress and no damage to the fabric; the double roller pressing column, transmission disc and conveying belt work together to realize "biting-conveying" integration, ensuring stable and continuous conveying of the fabric to the cutting table, providing reliable preconditions for accurate cutting.

[0025] 5. Strong adaptability and intelligent control: The system can adapt to the cutting needs of different fabric materials and clothing templates by adjusting parameters, the speed of the lead screw and the movement of the linear module can be flexibly adjusted to realize smooth cutting of different curvature profiles. At the same time, dynamic visual positioning and real-time trajectory compensation function effectively compensate for mechanical error and fabric deformation, improving the adaptability of the system to complex working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the overall structure schematic diagram of the present application;

[0027] Figure 2 is the structure schematic diagram of the lower knife plate of the present application;

[0028] Figure 3 is the structure schematic diagram of the camera of the present application;

[0029] Figure 4 is the structure schematic diagram of the upper knife plate of the present application;

[0030] Figure 5 is the structure schematic diagram of the cutting mechanism of the present application;

[0031] Figure 6 is the structure schematic diagram of the pressing plate and guide column of the present application;

[0032] Figure 7 is the structure schematic diagram of the biting mechanism of the present application;

[0033] Figure 8Structure diagram of the conveying belt of the present application;

[0034] Figure 9 Structure diagram of the cutting mechanism of the present application;

[0035] Figure 10 Structure diagram of the fastening sleeve and YAG laser of the present application.

[0036] In the figure: 1, cutting table; 101, n-shaped frame; 102, guide plate; 103, Y-shaped frame; 104, second L-shaped seat; 105, connecting rod; 106, first L-shaped seat; 107, camera; 108, lower knife plate; 109, guide rail rod; 2, cutting-off mechanism; 201, hydraulic rod; 202, first connecting arm; 203, cross plate; 204, second connecting arm; 205, mounting plate; 206, upper knife plate; 207, pressing plate; 208, guide column; 209, spring; 3, biting mechanism; 301, electric push rod; 302, guide rail plate; 303, first roller pressing column; 304, second roller pressing column; 305, first motor; 306, first transmission disc; 307, second transmission disc; 308, synchronous belt; 309, conveying belt; 310, transmission column; 4, cutting mechanism; 401, linear module; 402, connecting cylinder; 403, second motor; 404, bidirectional screw with forward and reverse teeth; 405, fastening sleeve; 406, YAG laser. DETAILED DESCRIPTION

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

[0038] Please refer to Figures 1-10 The present embodiment provides the following technical solutions:

[0039] For example Figures 1-3As shown, an intelligent cutting system based on machine vision includes: a cutting table 1, the upper surface of the cutting table 1 is provided with an n-shaped frame 101 and two sets of guide plates 102 at both ends; four sets of guide rails 109 are symmetrically and fixedly installed at both ends in the n-shaped frame 101, the outer surfaces of the four sets of guide rails 109 are assembled with a cutting-off mechanism 2 through a linear sliding pair, the cutting-off mechanism 2 can make linear reciprocating motion along the guide rails 109 and can form shearing cooperation with a lower blade 108 provided at one end of the cutting table 1; two sets of biting mechanisms 3 are installed between the two sets of guide plates 102 through a transmission connection mode; one end of each of the guide plates 102 is fixedly installed with a Y-shaped frame 103, a cloth roll supporting structure is formed between the two sets of Y-shaped frames 103 for placing a cloth roll, so that the cloth can be continuously conveyed under the driving of the transmission rollers of the biting mechanisms 3;

[0040] Wherein, one end of the inner side of each of the two sets of guide plates 102 is fixedly installed with a connecting rod 105, a first L-shaped seat 106 is fixedly installed between the two sets of connecting rods 105, a second L-shaped seat 104 is fixedly installed at one end of the n-shaped frame 101, the lower surfaces of the first L-shaped seat 106 and the second L-shaped seat 104 are fixedly installed with cameras 107, and a cutting mechanism 4 is fixedly installed between the first L-shaped seat 106 and the second L-shaped seat 104, the cutting end of the cutting mechanism 4 is located at the upper end of the cutting table 1 and is designed to be left-right symmetrical, when the cloth is supplied on the surface of the cutting table 1, the cloth is within the monitoring range of the cameras 107, the two sets of cameras 107 synchronously collect real-time image data of both sides of the cloth, the control system identifies the left and right boundaries of the cloth through an edge detection algorithm and calculates the central axis of the cloth as a symmetry reference;

[0041] Wherein, the cameras 107 continuously track feature points on the cloth, such as textures and marker lines, the system generates left-right symmetrical cutting trajectories by mirroring the template path along the central axis based on a preset garment template, such as a neckline and a sleeve opening contour, the left-right symmetrical cutting ends of the cutting mechanism 4 synchronously perform cutting actions according to real-time data from visual feedback, ensuring that the cloth on both sides is accurately cut into a completely symmetrical initial garment shape, during the whole process, the cameras 107 serve as a monitoring unit of a closed-loop control system, continuously monitor the position of the cloth and adjust the cutting path in real time, effectively compensating for mechanical errors and cloth deformation, to achieve a high-precision symmetrical cutting effect.

[0042] Wherein, the monitoring range of the cameras 107 installed on the lower surface of the first L-shaped seat 106 covers the area of the lower blade 108 of the cutting table 1, when the cloth is cut, it is continuously supplied by the biting mechanism 3 and transported to the cutting-off mechanism 2 through the cutting table 1, when the length of the cloth transported into the cutting-off mechanism 2 reaches a preset threshold, the cameras 107 capture this state in real time and send a trigger signal to the control system, after receiving the signal, the control system drives the cutting-off mechanism 2 to slide against the lower blade 108, to realize the cutting action of the cloth between the two.

[0043] Through the design of the cutting table 1, the n-shaped frame 101, the guide plate 102, the camera 107, the lower knife plate 108, the cutting mechanism 2, the biting mechanism 3 and the cutting mechanism 4, in use, the staff can place the cloth roll on the Y-shaped frame 103, then the cloth can be threaded between the biting mechanism 3 to the surface of the cutting table 1, then the staff can adjust the biting mechanism 3 to fully press at the upper and lower surfaces of the cloth and start, after the biting mechanism 3 starts, the transmission roller continuously pulls out the cloth from the roll and smoothly delivers it to the surface of the cutting table 1, in this process, the two groups of cameras 107 work continuously, not only collecting images on both sides of the cloth in real time, accurately identifying the boundary and calculating the center axis through edge detection algorithm, but also closely tracking the texture, marker line and other feature points on the cloth, once the cloth is detected to deviate or rotate during delivery, the data is immediately fed back to the control system, the control system generates left-right symmetric cutting tracks according to the preset garment template, such as the neckline, sleeve opening contour, along the center axis, and sends instructions to the cutting mechanism 4, after the left-right symmetric cutting ends of the cutting mechanism 4 receive the instructions, according to the real-time data feedback by the camera 107, the cutting action is executed synchronously, the cloth is accurately cut, and the left-right symmetric initial garment shape is cut out, at the same time, the camera 107 on the lower surface of the first L-shaped seat 106 monitors the situation at the cutting table 1 lower knife plate 108 at all times, as the biting mechanism 3 continuously supplies the cloth, the cut cloth is continuously delivered to the cutting mechanism 2, when the length of the cloth delivered into the cutting mechanism 2 reaches the preset threshold, the camera 107 quickly captures this state and sends a trigger signal to the control system, the control system immediately starts the cutting mechanism 2, makes it slide to the lower knife plate 108 along the guide rail 109, completes the cutting action of the cloth, realizes the accurate cutting of the cloth, and this "delivery-cutting-segmentation" integrated mode breaks the traditional cutting "motion-stationary" state, through dynamic visual positioning, real-time trajectory compensation and multi-axis collaborative control, the cutting is transformed from "independent process" to "flowing process node", which makes the whole process of cloth delivery, cutting and cutting automatic operation, reduces manual intervention.

[0044] As Figures 4-6As shown, the cutting mechanism 2 comprises a hydraulic rod 201 rotatably mounted on the upper surface of the n-shaped frame 101, the piston rod of the hydraulic rod 201 is rotatably connected to a first connecting arm 202, the middle section of the first connecting arm 202 is rotatably mounted to the inner side wall of the n-shaped frame 101 through a hinge shaft, forming a lever fulcrum structure; the other end of the first connecting arm 202 is rotatably connected to a second connecting arm 204 through a joint bearing, the other end of the second connecting arm 204 is rotatably mounted on the upper surface of a mounting plate 205; the mounting plate 205 is slidably sleeved on the outer surface of the four sets of guide rail rods 109 through a linear bearing, forming a linear sliding pair; the lower surface of the mounting plate 205 is fixedly mounted with an upper blade plate 206, the cutting edge plane of the upper blade plate 206 is in the same horizontal shearing plane as the cutting edge plane of the lower blade plate 108.

[0045] Wherein, the hinge joint between the first connecting arm 202 and the second connecting arm 204 is sleeved with a horizontal plate 203, when the hydraulic rod 201 performs extension and retraction movement, the first connecting arm 202 is driven to perform rotary movement around the hinge fulcrum between the middle section and the n-shaped frame 101, the other end of the first connecting arm 202 drives the second connecting arm 204 to move through the hinge pair, the other end of the second connecting arm 204 drives the mounting plate 205 to perform linear reciprocating sliding along the four sets of guide rail rods 109 through the rotary pair, so that the upper blade plate 206 fixed to the lower surface of the mounting plate 205 forms shearing cooperation with the lower blade plate 108, realizing the cloth cutting function.

[0046] Wherein, the lower surface of the mounting plate 205 is fixedly provided with a plurality of groups of springs 209, the lower end of the spring 209 is fixedly connected to the upper surface of a pressing plate 207, the upper surface of the pressing plate 207 is perpendicularly fixed with a guide column 208, the upper end of the guide column 208 is slidably sleeved on the mounting plate 205 and extends above it, and the spring 209 is sleeved on the outer periphery of the guide column 208.

[0047] When the cloth of a specific length and after cutting is conveyed into the n-shaped frame 101 under the drive of the biting mechanism 3 and is between the lower knife plate 108 and the upper knife plate 206, the first L-shaped seat 106 lower surface camera 107 will monitor that the cloth length reaches the preset threshold value, and the control system will immediately send a start instruction to the hydraulic rod 201, so that the hydraulic rod 201 starts to stretch and retract, and the piston rod drives the first connecting arm 202 to rotate around the rotating support point in the n-shaped frame 101. At this time, the first connecting arm 202 converts the linear motion of the hydraulic rod 201 into rotary motion, and in this process, the cross plate 203 rotatingly installed between the first connecting arm 202 and the second connecting arm 204 plays a stable supporting role, ensuring that the force transmission is stable and has no deviation. The rotation of the first connecting arm 202 can drive the second connecting arm 204 to move, and the second connecting arm 204 drives the mounting plate 205 to slide along the four groups of guide rail rods 109. In the process of sliding down the mounting plate 205, the compression solid plate 207 on the lower surface of the mounting plate 205 will first contact the cloth. At this time, the guide column 208 slides along the guide hole on the upper surface of the mounting plate 205, ensuring that the compression solid plate 207 is pressed vertically, and at the same time, the spring 209 is compressed to generate an elastic force, which tightly presses the cloth on the lower knife plate 108, avoiding displacement or wrinkles of the cloth when cutting. And as the mounting plate 205 continues to slide down, the upper knife plate 206 fixed on the lower surface of the mounting plate 205 cooperates with the lower knife plate 108, and realizes the rapid and neat cutting of the cloth by the pressure transmitted by the hydraulic rod 201. After cutting is completed, the hydraulic rod 201 reversely stretches and retracts, driving each component to reset. The compression solid plate 207 is lifted under the elastic restoring force of the spring 209, releasing the cloth, waiting for the next cutting instruction, completing the entire cloth cutting process, and realizing efficient production and stable operation of the equipment through the automatic closed loop design of "monitoring-triggering-compression-cutting-resetting", while ensuring cutting accuracy and cloth quality. It is especially suitable for textile processing scenes with high precision and efficiency requirements.

[0048] As shown in Figures 7-8 The biting mechanism 3 includes a motor push rod 301 fixedly installed on the upper surface of the guide plate 102. The piston rod of the motor push rod 301 slides downward into the guide plate 102 and is fixedly connected with the guide rail plate 302. The guide rail plate 302 and the guide plate 102 form a sliding pair. The first roller pressing column 303 is rotatably installed between the two guide rail plates 302 through bearings. The second roller pressing column 304 is rotatably installed between the two guide plates 102 through bearings and is arranged in parallel with the first roller pressing column 303. The two ends of the second roller pressing column 304 are rotatably penetrated out of the guide plate 102. One end is fixedly connected with the output shaft of the first motor 305 fixedly installed on the outer side of the guide plate 102. The outer circumferential surface of the second roller pressing column 304 is flush with the upper surface of the cutting table 1.

[0049] The other end of the second roller pressing column 304 is fixedly installed with a first transmission disc 306, the first transmission disc 306 is in transmission connection with a second transmission disc 307 through a synchronous belt 308, the second transmission disc 307 is fixedly installed at the end of one of the two groups of transmission columns 310, the two groups of transmission columns 310 are rotatably installed in the cutting table 1 through bearings, and the outer periphery of the two groups of transmission columns 310 is sleeved with a conveying belt 309, when the second roller pressing column 304 rotates, the conveying belt 309 is driven to move synchronously through the first transmission disc 306, the synchronous belt 308 and the second transmission disc 307, so as to realize the conveying function of the cloth.

[0050] Through the design of the electric push rod 301, the guide rail plate 302, the first roller pressing column 303, the second roller pressing column 304, the first motor 305, the first transmission disc 306, the second transmission disc 307, the synchronous belt 308 and the conveying belt 309, when in use, the staff can place the cloth roll on the Y-shaped frame 103, then the cloth can be pulled out from between the first roller pressing column 303 and the second roller pressing column 304 and pulled to the surface of the conveying belt 309 which is transmissionally installed in the cutting table 1, then the electric push rod 301 can be started to push the piston rod to push the guide rail plate 302 to vertically move downwards along the track in the guide plate 102, so as to enable the guide rail plate 302 to drive the first roller pressing column 303 to move close to the second roller pressing column 304 and form accurate pressure on the cloth therebetween, then the first motor 305 can drive the second roller pressing column 304 to rotate clockwise to continuously pull the cloth out of the roll, the first roller pressing column 303 which top touches the upper surface of the cloth can be driven to rotate at the same time, the first transmission disc 306 at the other end of the second roller pressing column 304 can drive the second transmission disc 307 to rotate at the same time through the synchronous belt 308, so as to enable the second transmission disc 307 to drive the transmission column 310 to synchronously drive the conveying belt 309 to convey the cloth, so as to ensure that the cloth can smoothly transition to the surface of the cutting table 1 while being bitten, realize the integration of "biting-conveying", and the pushing of the electric push rod 301 can also adjust the pressure between the first roller pressing column 303 and the second roller pressing column 304, so as to ensure that the cloth is evenly stressed and avoid damaging the cloth due to improper pressure, at the same time, the double roller pressing columns cooperate with the transmission disc to synchronously drive the conveying belt 309, so as to realize the smooth and continuous conveying of the cloth and ensure the positioning accuracy of the cloth before cutting.

[0051] As shown in Figures 9-10 The cutting mechanism 4 includes a linear module 401 fixedly installed between the first L-shaped seat 106 and the second L-shaped seat 104, a connecting cylinder 402 is fixedly installed on the lower surface of the mover seat of the linear module 401, a positive and negative tooth bidirectional screw rod 404 is rotatably installed in the connecting cylinder 402 through a bearing, the two ends of the positive and negative tooth bidirectional screw rod 404 are respectively provided with external threads with opposite rotation directions, a fastening sleeve 405 is threadedly connected to the two ends of the positive and negative tooth bidirectional screw rod 404, and a YAG laser 406 is fixedly installed in the fastening sleeve 405.

[0052] One end of the connecting cylinder 402 is fixedly installed with the second motor 403, the output shaft of the second motor 403 penetrates into the connecting cylinder 402 and is fixedly connected with the end of the positive and negative tooth bidirectional screw rod 404, the two groups of fastening sleeves 405 are equal in distance from the center of the positive and negative tooth bidirectional screw rod 404, when the second motor 403 drives the positive and negative tooth bidirectional screw rod 404 to rotate, the two groups of YAG lasers 406 move synchronously towards or away from each other along the positive and negative tooth bidirectional screw rod 404, realizing the symmetrical cutting function.

[0053] Through the design of the linear module 401, the connecting cylinder 402, the second motor 403, the positive and negative tooth bidirectional screw rod 404, the fastening sleeve 405 and the YAG laser 406, when the cloth is conveyed to the surface of the cutting table 1 under the drive of the first roller pressing column 303 and the second roller pressing column 304, it will be in the monitoring range of the camera 107 and real-time image acquisition and symmetrical cutting trajectory calculation will be performed, so as to send instructions to the linear module 401 and the second motor 403 according to the control system, the second motor 403 can drive the positive and negative tooth bidirectional screw rod 404 to rotate, because the thread directions of the two ends of the screw rod are opposite, and the fastening sleeves 405 are equal in distance from the center, when the screw rod rotates, it will drive the two fastening sleeves 405 to move synchronously towards the center or the two ends, so that the YAG laser 406 fixed in the fastening sleeve 405 is quickly adjusted to the target cutting width, at the same time, the moving block of the linear module 401 slides at high speed along the guide rail, driving the connecting cylinder 402 and the YAG laser 406 to translate as a whole, the YAG laser 406 emits a high-energy laser beam during the movement process, which vaporizes the cloth fiber instantaneously, forming a cutting seam with a width of only 0.1mm, and during the cutting process, the screw rod transmission precision is ±0.05mm, cooperating with the positioning precision of the linear module 401 ±0.02mm, so that the symmetrical cutting error of the two groups of YAG lasers 406 is ≤0.1mm, and the screw rod speed can be adjusted by frequency conversion of the second motor 403, realizing smooth cutting of different curvature contours, such as dress skirt arc line, after cutting is completed, the linear module 401 can drive the YAG laser 406 to quickly reset, the positive and negative tooth bidirectional screw rod 404 is reversely rotated to make the YAG laser 406 open to the initial interval, waiting for the next cutting instruction, the whole process is completed automatically, realizing high-precision and high-efficiency cloth forming cutting.

[0054] According to the above technical scheme, the working steps of the present scheme are summarized and combed: in use, the staff can place the cloth roll on the Y-shaped frame 103, then the cloth can be pulled out from between the first roller pressing column 303 and the second roller pressing column 304 and pulled to the surface of the transmission belt 309 installed in the cutting table 1, then the electric push rod 301 can be started to push the piston rod to push the guide rail plate 302 to move vertically along the track in the guide plate 102, so that the guide rail plate 302 can drive the first roller pressing column 303 to approach the second roller pressing column 304 and form accurate pressure on the cloth between them, then the first motor 305 can drive the second roller pressing column 304 to rotate clockwise to continuously pull the cloth out of the roll, the first roller pressing column 303 on the upper surface of the cloth can be rotated together, while the first transmission disc 306 on the other end of the second roller pressing column 304 drives the second transmission disc 307 to rotate together through the synchronous belt 308, so that the second transmission disc 307 drives the transmission column 310 to synchronously drive the conveying belt 309 to convey the cloth, so that it can ensure that the cloth is smoothly transitioned to the surface of the cutting table 1 while being bitten, when conveyed to the surface of the cutting table 1, i.e. the conveying belt 309, it will be within the monitoring range of the camera 107 and real-time image acquisition and symmetric cutting track calculation will be performed, so that the control system sends instructions to the linear module 401 and the second motor 403 accordingly, the second motor 403 can drive the positive and negative tooth bidirectional screw 404 to rotate, since the screw threads on both ends are opposite and the distance between the fastening sleeve 405 and the center part is equal, when the screw rotates, it will drive the two fastening sleeves 405 to move synchronously towards the center or the two ends, so that the YAG laser 406 fixed in the fastening sleeve 405 is quickly adjusted to the target cutting width, at the same time, the moving block of the linear module 401 slides at high speed along the guide rail, driving the connecting cylinder 402 and the YAG laser 406 to translate as a whole, the YAG laser 406 emits a high-energy laser beam during movement, which instantly vaporizes the cloth fiber to form a cutting seam with a width of only 0.1mm, and during cutting, the screw transmission precision is ±0.05mm, combined with the positioning accuracy of the linear module 401 of ±0.02mm, the symmetric cutting error of the two YAG lasers 406 is ≤0.1mm, and the screw rotation speed can be adjusted by the second motor 403 through frequency conversion, realizing smooth cutting of different curvature profiles, such as dress skirt arc lines. After cutting is completed, the linear module 401 can drive the YAG laser 406 to quickly reset, the bidirectional screw 404 rotates in reverse to make the YAG laser 406 open to the initial interval, and the next cutting instruction is waited for. Subsequently, the cut cloth can be continuously conveyed, and then the cut cloth can be conveyed into the n-shaped frame 101 and between the lower knife plate 108 and the upper knife plate 206. In this process, the camera 107 on the lower surface of the first L-shaped seat 106 continuously monitors the length value of the cloth conveyed into the n-shaped frame 101, and when the length of the conveyed cloth reaches the preset threshold value, the control system immediately sends a starting instruction to the hydraulic rod 201, so that the hydraulic rod 201 starts to stretch and retract, and the piston rod drives the first connecting arm 202 to rotate around the rotation support point in the n-shaped frame 101. At this time, the first connecting arm 202 converts the linear motion of the hydraulic rod 201 into rotary motion. In this process, the horizontal plate 203 rotatably mounted between the first connecting arm 202 and the second connecting arm 204 plays a stabilizing support role, ensuring smooth and non-deviated force transmission. The rotation of the first connecting arm 202 can drive the second connecting arm 204 to move, and the second connecting arm 204 in turn drives the mounting plate 205 to slide along the four groups of guide rail rods 109. In the process of sliding downward, the compression plate 207 on the lower surface of the mounting plate 205 will first contact the cloth, and at this time the guide column 208 will slide along the guide hole on the upper surface of the mounting plate 205 to ensure that the compression plate 207 is pressed vertically. At the same time, the spring 209 is compressed to generate elastic force, which tightly presses the cloth on the lower knife plate 108 to avoid displacement or wrinkles of the cloth during cutting. As the mounting plate 205 continues to slide downward, the upper knife plate 206 fixed to the lower surface of the mounting plate 205 cooperates with the lower knife plate 108 to realize fast and neat cutting of the cloth by means of the pressure transmitted by the hydraulic rod 201. After cutting is completed, the hydraulic rod 201 retracts in reverse to drive each component to reset, and the compression plate 207 is lifted under the elastic restoring force of the spring 209 to release the cloth, waiting for the next cutting instruction to complete the entire cloth cutting process.

[0055] In summary: the intelligent cutting system based on machine vision breaks the traditional cutting mode of "motion-stationary" through the integrated mode of "conveying-cutting-segmentation", realizes efficient production and stable operation of the equipment by dynamic visual positioning, real-time trajectory compensation and multi-axis collaborative control, and changes the cutting from "independent process" to "flowing process node".

[0056] The portions of the application not described herein are the same as or can be implemented using the prior art. Although embodiments of the application have been illustrated and described, it will be clear to those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application. The scope of the application is limited only by the claims and the equivalents thereof.

Claims

1. A machine vision based intelligent cutting system, characterized in that, The utility model relates to cutting table (1) upper surface both ends are provided with n-shaped frame (101) and two groups of guide plates (102) respectively, four groups of guide rail rod (109) are fixedly installed in the n-shaped frame (101) both ends symmetry, four groups of guide rail rod (109) outer surface are equipped with cutting mechanism (2) through linear sliding pair, cutting mechanism (2) can do linear reciprocation along guide rail rod (109), and can form shearing cooperation with the lower blade plate (108) of being arranged in cutting table (1) one end, two groups of bite mechanism (3) are installed between two groups of guide plates (102) through transmission connection mode, one end of guide plate (102) is fixedly installed Y-shaped frame (103), and two groups of Y-shaped frame (103) form cloth reel support structure between, are used for placing cloth reel, so that cloth can realize continuous conveying under the drive of transmission roller of bite mechanism (3), the inner side one end of two groups of guide plates (102) is fixedly installed connecting rod (105), and first L-shaped seat (106) is fixedly installed between two groups of connecting rod (105), one end of n-shaped frame (101) is fixedly installed second L-shaped seat (104), the lower surface of first L-shaped seat (106) and second L-shaped seat (104) is fixedly installed camera (107), and cutting mechanism (4) is fixedly installed between first L-shaped seat (106) and second L-shaped seat (104), and the cutting end of cutting mechanism (4) is in the upper end of cutting table (1) and presents left and right symmetry design, when cloth is supplied on the surface of cutting table (1), cloth is in the monitoring range of camera (107), and two groups of camera (107) synchronous acquisition real-time image data of both sides of cloth, and the control system identifies the left and right boundary of cloth through edge detection algorithm, and calculates the central axis of cloth as symmetry reference line; Camera (107) continuously tracks the feature point on cloth, and the control system generates left and right symmetrical cutting track based on the mirror image of preset clothes template along the central axis, and the left and right symmetrical cutting end of cutting mechanism (4) executes cutting action according to the real-time data of visual feedback, ensures that both sides of cloth are accurately cut into completely symmetrical initial clothes shape, in the whole process, camera (107) as the monitoring unit of closed loop control system, through continuously monitoring cloth position and real-time adjustment cutting path, effectively compensates mechanical error and cloth deformation, to realize high-precision symmetrical cutting effect. ​ The monitoring range of the camera (107) installed on the lower surface of the first L-shaped seat (106) covers the area of the lower blade plate (108) of the cutting table (1). After the cloth is cut, the cloth is transported to the cutting-off mechanism (2) through the cutting table (1) under the continuous feeding action of the biting mechanism (3). When the length of the cloth transported into the cutting-off mechanism (2) reaches a preset threshold, the camera (107) captures the state that the length of the cloth reaches the preset threshold in real time, and sends a trigger signal to the control system. After the control system receives the signal, the cutting-off mechanism (2) is driven to slide against the lower blade plate (108), so as to realize the cutting action of the cloth between the two. The cutting mechanism (4) comprises a linear module (401) fixedly installed between the first L-shaped seat (106) and the second L-shaped seat (104). A connecting barrel (402) is fixedly installed on the lower surface of the mover seat of the linear module (401). A forward-reverse tooth bidirectional screw rod (404) is rotatably installed in the connecting barrel (402) through a bearing. The two ends of the forward-reverse tooth bidirectional screw rod (404) are respectively provided with external threads with opposite rotation directions. Tightening sleeves (405) are respectively threadedly connected to the two ends of the forward-reverse tooth bidirectional screw rod (404). YAG lasers (406) are fixedly installed in the tightening sleeves (405). One end of the connecting barrel (402) is fixedly installed with a second motor (403). The output shaft of the second motor (403) penetrates into the connecting barrel (402) and is fixedly connected with the end of the forward-reverse tooth bidirectional screw rod (404). The center distances of the two groups of tightening sleeves (405) and the forward-reverse tooth bidirectional screw rod (404) are equal. When the second motor (403) drives the forward-reverse tooth bidirectional screw rod (404) to rotate, the two groups of YAG lasers (406) move synchronously towards or away from each other along the forward-reverse tooth bidirectional screw rod (404), so as to realize the symmetrical cutting function.

2. The machine vision-based intelligent cutting system of claim 1, wherein: The cutting-off mechanism (2) comprises a hydraulic rod (201) rotatably installed on the upper surface of the n-shaped frame (101). One end of the piston rod of the hydraulic rod (201) is rotatably connected with a first connecting arm (202). The middle segment of the first connecting arm (202) is rotatably installed on the inner side wall of the n-shaped frame (101) through a hinge shaft, so as to form a lever fulcrum structure. The other end of the first connecting arm (202) is rotatably connected with a second connecting arm (204) through a joint bearing. The other end of the second connecting arm (204) is rotatably installed on the upper surface of a mounting plate (205). The mounting plate (205) is slidably sleeved on the outer surfaces of four guide rod (109) through a linear bearing, so as to form a linear sliding pair. An upper blade plate (206) is fixedly installed on the lower surface of the mounting plate (205). The blade edge plane of the upper blade plate (206) is in the same horizontal shearing plane as the blade edge plane of the lower blade plate (108). 3.The machine vision-based intelligent cutting system according to claim 2, wherein: The outer periphery of the hinge joint of the first connecting arm (202) and the second connecting arm (204) is sleeved with a horizontal plate (203), when the hydraulic rod (201) does the extension and retraction movement, drives the first connecting arm (202) to do the rotary movement around the hinge joint fulcrum of the middle segment and the n-shaped frame (101), the other end of the first connecting arm (202) drives the second connecting arm (204) to move through the hinge pair, the other end of the second connecting arm (204) drives the mounting plate (205) to do the linear reciprocating sliding along the four groups of guide rail rods (109) through the rotary pair, makes the upper cutter plate (206) fixed to the lower surface of the mounting plate (205) and the lower cutter plate (108) form the shearing cooperation, realizes the cloth cutting function.

4. The machine vision-based intelligent cutting system of claim 3, wherein: The other end of the lower surface of the mounting plate (205) is uniformly fixed with a plurality of groups of springs (209), the lower end of the spring (209) is fixedly connected with the upper surface of the pressing plate (207), the upper surface of the pressing plate (207) is vertically fixed with a guide column (208), the upper end of the guide column (208) is slidably penetrated into the mounting plate (205) and extends above it, the spring (209) is sleeved on the outer periphery of the guide column (208).

5. The machine vision based intelligent cutting system as claimed in claim 1, wherein: The biting mechanism (3) comprises an electric push rod (301) fixedly installed on the upper surface of the guide plate (102), the piston rod of the electric push rod (301) is slid downward and penetrates into the guide plate (102) and is fixedly connected with the guide rail plate (302), the guide rail plate (302) and the guide plate (102) constitute a sliding pair, a first roller pressing column (303) is rotatably installed between the two groups of guide rail plates (302) through a bearing, a second roller pressing column (304) parallel to the first roller pressing column (303) is rotatably installed between the two groups of guide plates (102) through a bearing, the two ends of the second roller pressing column (304) are rotatably penetrated out of the guide plate (102), one end is fixedly connected with the output shaft of the first motor (305) fixedly installed outside the guide plate (102), the outer circumferential surface of the second roller pressing column (304) is flush with the upper surface of the cutting table (1).

6. The machine vision-based intelligent cutting system of claim 5, wherein: The other end of the second roller pressing column (304) is fixedly installed with a first transmission disc (306), the first transmission disc (306) is transmissionally connected with a second transmission disc (307) through a synchronous belt (308), the second transmission disc (307) is fixedly installed on the end of one of the two groups of transmission columns (310), the two groups of transmission columns (310) are rotatably installed in the cutting table (1) through a bearing, and the outer periphery of the two groups of transmission columns (310) is sleeved with a conveying belt (309), when the second roller pressing column (304) rotates, the conveying belt (309) is driven to move synchronously through the first transmission disc (306), the synchronous belt (308) and the second transmission disc (307), realizing the conveying function of the cloth.

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