Cloth inspecting method of air knife suction nozzle cloth inspecting machine

Abstract

The invention relates to a cloth inspecting method of an air knife suction nozzle cloth inspecting machine. The cloth inspecting method comprises the steps that a plurality of dust collection heads are linearly arranged above cloth according to the width of the cloth; a fan is started, and floating yarn on the cloth near the dust suction opening is collected into a dust collection barrel; the cloth subjected to dust collection treatment is conveyed to the position below a cloth inspecting machine to be detected; the camera is used for photographing the detection flaws; the cloth is fed into a detection system to detect whether defects exist or not, if the defects exist, flaw positions are marked, if the defects do not exist, treatment is not conducted, then the flaw positions are fed into a computer, a dust collection system is enhanced, and the flaw detection rate of the cloth is increased; next judgment is conducted on the processed cloth again, if flaws appear, the machine body stops, then the positions of the flaws are marked in the computer and confirmed manually, and if no flaws are detected, detection is passed. According to the cloth inspecting method of the air knife suction nozzle cloth inspecting machine, various kinds of dust and impurities are rapidly adsorbed through strong suction force, and the cleaning efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of textile machinery, and in particular to a floating yarn removing device and method for a cloth inspection machine. Background Art

[0002] Fabric inspection machines are specialized equipment used in the garment industry to inspect fabric quality. Their primary function is to help operators detect defects and color variations by providing light and unfolding the fabric in sections. However, existing fabric inspection machines often leave a large amount of floating yarn attached to the fabric surface during processing. This not only affects the inspection performance but also reduces product quality. Conventional suction nozzle structures suffer from uneven negative pressure distribution, making it difficult to effectively remove the floating yarn and consuming high energy.

[0003] Therefore, in order to solve the above technical problems, it is necessary to provide a cloth inspection method for a cloth inspection machine with an air knife suction nozzle to overcome the above defects in the prior art. SUMMARY OF THE INVENTION

[0004] The object of the present invention is to provide a cloth inspection method for a cloth inspection machine with an air knife suction nozzle, which aims to improve the efficiency of removing floating yarns on the cloth surface, reduce the interference of floating yarns on defect detection, and improve the working environment.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a cloth inspection method of a cloth inspection machine with an air knife suction nozzle, the cloth inspection machine with an air knife suction nozzle comprising a machine body, a dust suction system and a cloth inspection machine being installed on the machine body, the machine body being used to transport cloth and pass the cloth through the dust suction system and the cloth inspection machine in sequence, the dust suction system comprising a plurality of dust suction heads, a fan and a dust collecting bucket, the dust suction heads, the fan and the dust collecting bucket being connected by a pipeline, the dust suction head adopts an air knife structure, the cavity inside the dust suction head is an air guide cavity, the cross-section of the air guide cavity is rectangular, the cross-sectional width of the shape of the air guide cavity in the direction close to the cloth first remains unchanged and then gradually decreases, the cross-sectional length of the shape of the air guide cavity in the direction close to the cloth gradually increases, the dust suction head can form a rectangular negative pressure area in the cloth transmission area, the cloth inspection machine comprises a camera, a computer and an intelligent detection system, the camera, the computer and the intelligent detection system cooperate with each other to detect whether the cloth has defects; The cloth inspection methods of the air knife suction nozzle cloth inspection machine include: 1) Arrange several vacuum heads in a row on the cloth according to the width of the cloth; 2) Start the fan to draw air into the suction head, generating negative pressure to collect the floating yarn on the cloth near the suction port into the dust collection bucket, and exhaust the gas through the fan; 3) The vacuumed cloth is transported to the cloth inspection machine for inspection; 4) The camera on the fabric inspection machine takes pictures of the detected defects; 5) The pictures captured by the camera are sent to the inspection system to detect whether there are any defects. If there are any defects, the defect location will be marked. If there are no defects, no processing will be done. The defect location will then be sent to the computer to enhance the vacuum system and improve the defect detection rate of the cloth; 6) The processed cloth is judged again. If defects are found, the machine stops and the blower stops blowing air. The defect location is marked in the computer, and the detected defects are displayed. It is then handed over to manual confirmation. If no defects are detected, the cloth is not processed and passes the inspection.

[0006] By implementing this technical solution, the narrow rectangular negative pressure area effectively removes floating yarns, increasing production efficiency. Automated inspection on the fabric inspection machine reduces time and labor costs. Repeated sample testing reduces interference from floating yarns on defect detection, improving the efficiency and accuracy of product defect detection. This reduces the workload of workers, improves the working environment, and enhances employee health and safety. It also enhances the safety and comfort of textiles and reduces the impact of harmful substances on the human body.

[0007] The cloth inspection method of the cloth inspection machine with an air knife nozzle of the present invention is further configured as follows: the suction head is composed of a rectangular top plate connected to a pipe, trapezoidal side plates are connected to opposite sides of the top plate, the side of the trapezoidal side plate away from the top plate is bent toward the center of the top plate, and the other two sides of the top plate are connected to pentagonal side plates, and the pentagonal side plates are connected to the trapezoidal side plates.

[0008] By adopting the above technical solution, the cross-sectional width of the air guide cavity of the vacuum cleaner head in the direction close to the cloth first remains unchanged and then gradually decreases, and the cross-sectional length of the air guide cavity in the direction close to the cloth gradually increases, thereby forming a narrow and long negative pressure area between the vacuum cleaner head and the cloth.

[0009] The cloth inspection method of the cloth inspection machine with an air knife suction nozzle of the present invention is further configured as follows: the ratio of the length to the width of the negative pressure area is between 20-1 and 40-1.

[0010] By adopting the above technical solution, the width of the vacuum head can be appropriately proportioned due to the narrow tube effect, which can effectively improve the efficiency of negative pressure generation and its dust removal range. When only smaller particles need to be inhaled, the width of the suction nozzle can be appropriately reduced as much as possible, while widening the negative pressure length range to achieve the purpose of forming a large range of negative pressure, thereby greatly saving energy and working time.

[0011] The cloth inspection method of the cloth inspection machine with an air knife suction nozzle of the present invention is further configured as follows: the dust collecting barrel includes a barrel body and a barrel cover, and an arc-shaped dust filter bag is provided in the barrel body.

[0012] By adopting the above technical solution, the dust filter bag is used to filter larger particles of floating dust.

[0013] The cloth inspection method of the wind knife suction nozzle cloth inspection machine of the present invention is further configured as follows: in step 2, the floating yarns larger than the mesh holes of the dust filter bag will be collected in the dust collecting bucket, and the floating yarns smaller than the mesh holes of the dust filter bag will be discharged by the fan.

[0014] The cloth inspection method of the cloth inspection machine with an air knife suction nozzle of the present invention is further configured as follows: in step 6, the machine body and the blower are controlled by PLC.

[0015] The fabric inspection method of the air knife suction nozzle fabric inspection machine of the present invention is further configured as follows: in step 6, an overload protection and short-circuit protection device of a thermal relay is installed between the fan and the PLC.

[0016] By adopting the above technical solution, the system device can operate more safely and smoothly.

[0017] The cloth inspection method of the cloth inspection machine with an air knife nozzle of the present invention is further configured as follows: an air knife beam is installed on the machine body, and a plurality of dust suction heads are slidably connected to the air knife beam.

[0018] By adopting the above technical solution, a plurality of dust collector heads can slide horizontally on the wind knife beam, making it convenient to adjust the number of dust collector heads according to cloths of different lengths.

[0019] The cloth inspection method of the cloth inspection machine with an air knife suction nozzle of the present invention is further configured as follows: a crossbeam is provided on the machine body, the cloth is positioned on the crossbeam for transmission, and a plurality of dust suction heads are positioned above the crossbeam.

[0020] By adopting the above technical solution, the position of the dust collector head corresponds to the bend of the cloth, and the floating yarn is more likely to reduce adhesion to the cloth.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The vacuum system in this invention utilizes powerful suction to rapidly absorb various dust and impurities, significantly improving cleaning efficiency. Negative pressure cleaning technology reduces the use of traditional cleaning agents such as water and chemical solvents, reducing environmental pollution. The vacuum cleaner automatically adjusts the negative pressure value based on cleaning needs through the PLC, achieving both energy conservation and high efficiency.

[0022] 2. The air knife nozzle fabric inspection machine of the present invention is suitable for a variety of environments and surfaces, including steel mills, ports, docks, and places where dust pollution needs to be controlled, such as the ground, walls, and workbenches. It has a simple design, is easy to operate, and is relatively easy to maintain.

[0023] 3. The air knife suction nozzle cloth inspection machine of the present invention collects and processes the machine dust in a centralized manner, avoiding the secondary dust problem that may be caused by traditional cleaning methods, effectively reducing the dust and microbial content in the air, and improving indoor air quality. It is especially beneficial for allergy patients or environments with special requirements for air quality. It extends the service life of the equipment, creates a cleaner and tidier working environment, and improves work efficiency and employee satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the air knife suction nozzle cloth inspection machine of the present invention; Figure 2 This is a schematic diagram of the structure of the dust collector head of the air knife nozzle cloth inspection machine of the present invention Figure 1 ; Figure 3 This is a schematic diagram of the structure of the dust collector head of the air knife nozzle cloth inspection machine of the present invention Figure 2 ; Figure 4 This is a schematic diagram of the dust collection bucket structure of the air knife suction nozzle cloth inspection machine of the present invention; Figure 5 for Figure 1 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0025] Please refer to the instruction manual Figure 1 To the attached Figure 5 As shown, the present invention is a method for inspecting cloth using an air knife suction nozzle cloth inspection machine, comprising a machine body 6 for conveying cloth, a dust collection system mounted at the rear of the machine body 6 for cleaning dust from the cloth, and a cloth inspection machine 9 mounted on the machine body 6. The cloth inspection machine 9 is an intelligent, externally attached cotton yarn defect detection system. While the intelligent defect detection system detects defects, the dust collection system removes floating yarn from the cloth surface during transportation. After detecting defects, the dust collection system is controlled to achieve a better defect detection rate. The power of the air knife suction nozzle cloth inspection machine 9 in this embodiment is less than 1.5 kW.

[0026] The vacuum system includes a vacuum head 1, a blower 2, and a dust collection bucket 3. These three components are connected by a pipe. The vacuum head 1 utilizes an air knife structure. The cavity within the vacuum head 1 is an air guide chamber with a rectangular cross-section. The width of the air guide chamber initially remains constant near the fabric and then gradually decreases. The length of the air guide chamber gradually increases near the fabric. In this embodiment, the dust collector head 1 is composed of a rectangular top plate 12 connected to the pipe, and trapezoidal side panels 13 are connected to the opposite sides of the top plate 12. The trapezoidal side panels 13 are bent toward the center of the top plate 12 on the side away from the top plate 12, and the other two sides of the top plate 12 are connected with pentagonal side panels 14. The pentagonal side panels 14 are connected to the trapezoidal side panels 13 to form an air guide cavity. The height and length of the dust collector head 1 and the inclination angle of the bending of the trapezoidal side panels 13 can effectively improve the efficiency of negative pressure generation and its dust removal range. The height of the dust collector head 1 is 100cm to 120cm, the width a of the top of the trapezoidal side panel 13 is 55cm to 60cm, the width b of the bottom of the trapezoidal side panel 13 is 300cm to 320cm, the spacing between the tops of two adjacent trapezoidal side panels 13 is 55cm to 60cm, and the spacing c between the bottoms of two adjacent trapezoidal side panels 13 is 3cm to 7cm. The above dimensions form a narrow and long negative pressure area between the vacuum head 1 and the cloth. The length to width ratio of the negative pressure area is between 20~1 and 40~1. In the actual production process, the air volume in the negative pressure area is 180m3 / h. Due to the narrow tube effect, the width of the vacuum head 1 is appropriately proportional, which can effectively improve the efficiency of negative pressure generation and its dust removal range. When only smaller particles need to be inhaled, the width range of the negative pressure area should be appropriately reduced as much as possible, and the length range of the negative pressure should be widened at the same time to achieve the purpose of forming a large range of negative pressure, thereby greatly saving energy and working time.

[0027] As a preferred embodiment, there are 5 dust collector heads 1, and the 5 dust collector heads 1 are horizontally installed on the wind knife beam 4. The dust collector heads 1 can slide horizontally on the wind knife beam 4. The number of dust collector heads 1 is adjusted according to the different lengths of cloth. The 5 pipes connected to the 5 dust collector heads 1 are connected through a five-way joint 5, and the five-way joint 5 is connected to the dust collecting bucket 3 through the pipe, and the dust collecting bucket 3 is then connected to the blower 2 through the pipe.

[0028] Blower 2 generates negative pressure by rotating its blades to draw air from the duct and dust collection container 3, creating negative pressure. Air, dust, and other debris are then drawn through the vacuum head 1 and discharged through the exhaust port. Blower 2 has a power of 100W. A PLC controls the switching between blower 2 and the machine body 6. Overload and short-circuit protection devices, such as thermal relays, are installed between blower 2 and the PLC, ensuring safe and stable operation of the system.

[0029] The dust bucket 3 is mainly used to filter dust and waste in the air. It can capture and collect particulate matter, purify the exhaust air, and maintain the normal operation of the system. The dust bucket 3 is a container for collecting and storing inhaled dust and waste. It is usually located at the bottom of the system and is equipped with a sealing cover to prevent dust leakage. The dust bucket 3 includes a barrel 31 and a barrel cover 32. An arc-shaped dust filter bag 33 is provided in the barrel 31. The dust filter bag 33 is used to filter larger particles of floating dust. When vacuuming, floating yarns larger than the mesh holes of the dust filter bag 33 will be collected in the dust bucket 3, and floating yarns smaller than the mesh holes of the dust filter bag 33 will be discharged by the fan.

[0030] Only one negative pressure fan is required in the entire textile workshop, which is connected through the main pipe and the transverse main pipe, and then connected through multiple branch pipes on the branch pipe and multiple negative pressure terminals and dust suction ends. Only one negative pressure fan is required to uniformly process the impurities in the entire textile workshop, without the need to use multiple dust suction devices, and the obtained impurities can be uniformly cleaned through the impurity cleaning port at the bottom of the storage box, which effectively improves the cleaning efficiency and achieves the purpose of energy saving.

[0031] The fabric inspection machine 9 includes an area array camera, which is used to collect original pictures. The detection system is used to detect whether there are defects on the pictures and mark the locations of the defects on the pictures. The computer is used to display the final pictures, and the pictures are finally confirmed by humans.

[0032] The working principle of the cloth inspection method of the air knife suction nozzle cloth inspection machine of the present invention is as follows: First, several vacuum heads 1 are arranged in a row on the wind knife beam 4 according to the width of the fabric. The machine body 6 is activated to move the fabric along the rolling direction of the beam 7 to the bottom of the vacuum heads 1. Under the action of the blower 2, air begins to flow into the vacuum heads 1, creating negative pressure. This negative pressure draws the floating yarns on the fabric surface near the suction port into the air guide cavity. The sucked-in floating yarns are transported along the curved duct by the airflow to the dust collection bucket 3. Larger floating yarns are collected there, while the smoke and dust that passes through the dust collection bucket 3 is collected by the filter screen that passes through it next. Finally, the air is exhausted by the blower. The dust-free fabric continues to be transported to the intelligent detection system installed on the fabric inspection machine 9 for inspection. During the defect detection process, the area array camera on the fabric inspection machine 9 begins to capture the original image. The images captured by the area array camera are fed into the inspection system for a preliminary inspection to determine if any defects are present. If a defect is present, the defect location is marked on the background image. If no defect is present, the background image is not processed and then fed into the computer for sample enhancement in the inspection system to improve the sample's defect detection rate. The processed sample is then re-evaluated. If a defect is present, the PLC controls the motor to stop, causing blower 2 to cease air flow. The defect location is then marked on the computer and the image is displayed on the screen, showing the detected defect, for manual verification. If no defect is detected, the unmarked image is displayed directly, and the fabric passes inspection without any processing.

[0033] The above specific implementation methods are only preferred embodiments of this creation and are not intended to limit this creation. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this creation should be included in the scope of protection of this creation.

Claims

1. A cloth inspection method for a cloth inspection machine with an air knife suction nozzle, characterized in that: The air knife suction nozzle cloth inspection machine includes a body, on which a dust collection system and a cloth inspection machine are installed. The body is used to transport cloth and pass the cloth through the dust collection system and the cloth inspection machine in sequence. The dust collection system includes a plurality of dust collection heads, a fan and a dust collection bucket. The dust collection head, the fan and the dust collection bucket are connected by a pipeline. The dust collection head adopts a wind knife structure. The cavity inside the dust collection head is an air guide cavity. The cross-section of the air guide cavity is rectangular. The cross-sectional width of the shape of the air guide cavity in the direction close to the cloth first remains unchanged and then gradually decreases. The cross-sectional length of the shape of the air guide cavity in the direction close to the cloth gradually increases. The dust collection head can form a rectangular negative pressure area in the cloth transmission area. The cloth inspection machine includes a camera, a computer and an intelligent detection system. The camera, the computer and the intelligent detection system cooperate with each other to detect whether the cloth has defects; The cloth inspection methods of the air knife suction nozzle cloth inspection machine include: 1) Arrange several vacuum heads in a row on top of the cloth according to the width of the cloth; 2) Start the fan to draw air into the vacuum head, generating negative pressure to collect the floating yarn on the cloth near the vacuum port into the dust collection bucket, and exhaust the gas through the fan; 3) The vacuumed cloth is transported to the cloth inspection machine for testing; 4) The camera on the fabric inspection machine takes pictures of the detected defects; 5) The pictures captured by the camera are sent to the inspection system to detect whether there are any defects. If there are any defects, the defect location will be marked. If there are no defects, no processing will be done. The defect location will then be sent to the computer to enhance the vacuum system and improve the defect detection rate of the cloth; 6) The processed cloth is judged again. If defects are found, the machine stops and the blower stops blowing air. The defect location is marked in the computer, and the detected defects are displayed. It is then handed over to manual confirmation. If no defects are detected, the cloth is not processed and passes the inspection.

2. The cloth inspection method of the cloth inspection machine with an air knife suction nozzle according to claim 1, characterized in that: The vacuum head consists of a rectangular top plate connected to the pipe, trapezoidal side plates connected to the two opposite sides of the top plate, the side of the trapezoidal side plate away from the top plate is bent toward the center of the top plate, and the other two sides of the top plate are connected to pentagonal side plates, which are connected to the trapezoidal side plates.

3. The cloth inspection method of the cloth inspection machine with an air knife suction nozzle according to claim 1, characterized in that: The ratio of the length to the width of the negative pressure area is between 20~1 and 40~1.

4. The cloth inspection method of the cloth inspection machine with an air knife suction nozzle according to claim 3, characterized in that: The dust collecting barrel comprises a barrel body and a barrel cover, and an arc-shaped dust filter bag is arranged in the barrel body.

5. The cloth inspection method of the cloth inspection machine with air knife suction nozzle according to claim 3, characterized in that: In the step 2, the floating yarns that are larger than the mesh holes of the dust filter bag will be collected in the dust collecting bucket, and the floating yarns that are smaller than the mesh holes of the dust filter bag will be discharged by the fan.

6. The cloth inspection method of the cloth inspection machine with air knife suction nozzle according to claim 1, characterized in that: In step 6, the machine body and the fan are controlled by PLC.

7. The cloth inspection method of the cloth inspection machine with air knife suction nozzle according to claim 1, characterized in that: In step 6, an overload protection and short-circuit protection device of a thermal relay is installed between the fan and the PLC.

8. The cloth inspection method of the cloth inspection machine with air knife suction nozzle according to claim 1, characterized in that: A wind knife cross beam is installed on the machine body, and a plurality of dust collection heads are slidably connected to the wind knife cross beam.

9. The cloth inspection method of a cloth inspection machine with an air knife suction nozzle according to claim 1, characterized in that: A crossbeam is provided on the machine body, the cloth is located on the crossbeam for transmission, and a plurality of dust collecting heads are located above the crossbeam.

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