Foreign fiber removing apparatus

Abstract

The application discloses a foreign fiber removing device, which comprises a machine body, a conveying channel for conveying fibers, and a foreign fiber detecting device. The conveying channel is flat. The foreign fiber detecting device comprises a camera module and a light source module arranged on the machine body and corresponding to opposite sides of the conveying channel in the thickness direction. The device further comprises a removing module arranged on the machine body, the removing module comprising a plurality of nozzles corresponding to the conveying channel, the nozzles being distributed along the width direction of the conveying channel and arranged on the rear side of the foreign fiber detecting device in the conveying direction of the conveying channel. The device further comprises a recycling module arranged on the machine body, the recycling module comprising a recycling channel communicating with the conveying channel, the recycling channel being arranged on opposite sides of the conveying channel in the thickness direction and corresponding to the nozzles. The device can remove the tiny foreign fibers in the carded fibers, ensure the product quality, and has a simple structure and low cost.

Description

Technical Field

[0001] This application belongs to the field of cotton spinning technology, and in particular relates to a foreign fiber removal device. Background Technology

[0002] The presence of foreign fiber defects in nonwoven fabrics reduces their overall quality, affecting their appearance and performance, and consequently impacting their market competitiveness. However, the removal of foreign fibers remains a persistent challenge for nonwoven fabric manufacturers. Taking spunlace nonwoven fabric as an example, the process involves cotton harvesting and packaging, opening, blending, fine opening, carding, web formation, spunlace web production, drying, and rolling. Current foreign fiber treatment primarily involves adding foreign fiber pretreatment equipment and adding fabric inspection machines after rolling to enhance visual inspection and manual intervention. However, the current inspection methods have significant drawbacks. For the foreign fiber pretreatment machine, due to the pre-opening process, it can only handle medium to large-sized foreign fibers. Furthermore, the influence of the downstream production environment means that many tiny foreign fibers still leak into the final rolling stage. As for the fabric inspection machine at the rolling stage, its performance is limited by the equipment's capabilities and the efficiency of manual inspection, resulting in high costs and low efficiency. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a foreign fiber removal device that can remove minute foreign fibers present in the combed fibers, ensuring product quality while maintaining a simple structure and low cost.

[0004] This application provides a foreign fiber rejection device, comprising:

[0005] The machine body is equipped with a conveying channel for conveying fibers, and the conveying channel is flat.

[0006] The foreign fiber detection device includes a camera module and a light source module disposed on the machine body, and the camera module and the light source module are respectively disposed on opposite sides of the thickness direction of the conveying channel;

[0007] The rejection module is located on the machine body. The rejection module includes multiple nozzles corresponding to the conveying channel. The multiple nozzles are distributed along the width direction of the conveying channel, and the multiple nozzles are located on the rear side of the foreign fiber detection device in the conveying direction of the conveying channel.

[0008] The recycling module is located on the machine body. The recycling module includes a recycling channel that communicates with the conveying channel. The recycling channel and multiple nozzles are arranged on opposite sides of the conveying channel in the thickness direction.

[0009] According to the foreign fiber removal equipment of this application, through the coordinated design of the machine body, foreign fiber detection device, removal module, and recycling module, it can efficiently detect and remove tiny foreign fibers in the combed fibers. The flat conveyor channel, combined with a high-resolution camera and a uniformly illuminated light source module, ensures the accuracy of foreign fiber detection; multiple nozzles distributed along the width of the conveyor channel can remove foreign fibers across the entire width of the fiber web; the recycling channel ensures that the removed foreign fibers are properly handled, avoiding secondary contamination. The overall structure is simple and compact, with low cost, easy installation and modification, effectively improving the efficiency and quality of foreign fiber handling in the nonwoven fabric production process, and reducing the pressure on subsequent roll-to-roll inspection.

[0010] According to one embodiment of this application, the recycling module includes:

[0011] The recovery pipe is located inside the machine body. One end of the recovery pipe is connected to the conveying channel and corresponds to multiple nozzles.

[0012] The collection pipe is connected to the outside of the machine body. The other end of the collection pipe is connected to the recycling pipe. The collection pipe and the recycling pipe together form a recycling channel.

[0013] The recovery fan is connected between the recovery pipe and the collection pipe. The recovery fan is used to drive the air in the recovery pipe to flow into the collection pipe.

[0014] According to one embodiment of this application, the recycling pipeline includes a first section, a second section, and a third section connected sequentially along its flow direction. The inlet end of the first section is connected to the conveying channel, and the flow direction of the first section corresponds to the blowing direction of the nozzle. The third section is a cylindrical shape extending along the width direction of the conveying channel. The widths of the first and second sections correspond to the width of the conveying channel. The second section surrounds the third section and is arranged in a spiral shape. The inlet end of the second section is smoothly connected to the outlet end of the first section, and the outlet end of the second section is smoothly connected to the side wall of the third section. The recycling fan is connected to one end of the third section in the width direction of the conveying channel.

[0015] According to one embodiment of this application, the sidewall of the first segment in the thickness direction is provided with an air inlet, the air inlet is located near the inlet end of the first segment, and the air inlet direction is set at an acute angle to the flow direction of the first segment.

[0016] According to one embodiment of this application, the conveying channel is set at an angle to the horizontal direction, the conveying channel is located on the front side of the machine body, the camera module is located on the rear side of the conveying channel, and the light source module is located on the front side of the conveying channel.

[0017] According to one embodiment of this application, an inspection plate is provided on the front side of the conveying channel. The inspection plate can be flipped and installed on the machine body. The inspection plate corresponds to the camera module, and the light source module is installed on the inspection plate.

[0018] According to one embodiment of this application, the rear side of the body is provided with an open opening, which communicates with the installation space of the camera module, and a maintenance plate is provided at the position of the camera module corresponding to the opening.

[0019] According to one embodiment of this application, the light source module includes at least one of a white light source, an ultraviolet light source, and a polarized light source.

[0020] According to one embodiment of this application, the machine body is provided with at least two air storage tanks, and the air storage tanks are connected to the nozzles through pipelines.

[0021] According to one embodiment of this application, the machine body is further provided with a variable diameter pipe, which is connected to the outlet end of the conveying channel.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the foreign fiber removal device provided in the embodiments of this application;

[0025] Figure 2 This is a partial structural schematic diagram of the foreign fiber removal device provided in the embodiments of this application;

[0026] Figure 3 This is a partial cross-sectional view of the foreign fiber removal device provided in the embodiments of this application;

[0027] Figure 4 This is another partial cross-sectional view of the foreign fiber removal device provided in the embodiments of this application;

[0028] Figure 5 This is another partial structural schematic diagram of the foreign fiber removal device provided in the embodiments of this application.

[0029] Figure label:

[0030] 100. Foreign fiber rejection equipment; 110. Machine body; 111. Conveying channel; 112. Opening; 120. Camera module; 121. Inspection plate; 130. Light source module; 140. Rejection module; 141. Nozzle; 150. Recovery module; 151. Recovery pipeline; 1511. First section; 1512. Second section; 1513. Third section; 1514. Air inlet; 152. Collection pipeline; 153. Recovery fan; 160. Inspection plate; 170. Air storage tank; 180. Reducing diameter pipeline;

[0031] 200. Combing machine. Detailed Implementation

[0032] The presence of foreign fiber defects in nonwoven fabrics reduces their overall quality, affecting their appearance and performance, and consequently impacting their market competitiveness. However, the removal of foreign fibers remains a persistent challenge for nonwoven fabric manufacturers. Taking spunlace nonwoven fabric as an example, the process involves cotton harvesting and packaging, opening, blending, fine opening, carding, web formation, spunlace web production, drying, and rolling. Current foreign fiber treatment primarily involves adding foreign fiber pretreatment equipment and adding fabric inspection machines after rolling to enhance visual inspection and manual intervention. However, the current inspection methods have significant drawbacks. For the foreign fiber pretreatment machine, due to the pre-opening process, it can only handle medium to large-sized foreign fibers. Furthermore, the influence of the downstream production environment means that many tiny foreign fibers still leak into the final rolling stage. As for the fabric inspection machine at the rolling stage, its performance is limited by the equipment's capabilities and the efficiency of manual inspection, resulting in high costs and low efficiency.

[0033] In view of this, this application provides a foreign fiber removal device for installation at the rear end of a carding machine to detect and automatically remove minute foreign fibers. Since the carding machine layers and fluffs the cotton fibers, forming a fiber web structure, a high-resolution visual inspection device is installed on the foreign fiber removal device to accurately capture images of the fiber web in real time. Through image processing technology, minute black spots, plastic film, and colored foreign fibers are accurately identified and automatically removed by controlling the spray valve. This achieves the removal of minute foreign fibers present in the carded fibers, ensuring product quality while maintaining a simple structure, low cost, and ease of modification, and significantly reducing the pressure of inspecting the finished fabric roll.

[0034] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0035] The following is for reference. Figures 1-5 This application describes a foreign fiber rejection device according to an embodiment of the present application.

[0036] Please see Figures 1 to 5 According to some embodiments of this application, the foreign fiber rejection device 100 includes: a body 110, a foreign fiber detection device, a rejection module 140, and a recycling module 150.

[0037] The body 110 is provided with a conveying channel 111 for conveying fibers, and the conveying channel 111 is flat.

[0038] The main body 110 serves as the core structure of the equipment, supporting and securing other functional modules. Its internal conveying channel 111 is flat, a design that allows the fibers to spread into a thin, uniform layer within the channel, facilitating subsequent inspection and rejection operations, and also conforming to the shape of the fiber web output from the carding machine 200. For example, the thickness of the conveying channel 111 can be designed to be 5-10 cm, and the width can be set according to the actual production line requirements, such as 50-100 cm, without specific limitation.

[0039] In some examples, a negative pressure fan may be installed on the body 110 to drive the gas flow in the conveying channel 111, thereby driving the movement of the fiber web in the conveying channel 111.

[0040] The foreign fiber detection device includes a camera module 120 and a light source module 130 disposed on the body 110. The camera module 120 and the light source module 130 are respectively disposed on opposite sides of the thickness direction of the conveying channel 111.

[0041] The camera module 120 can be a machine vision device such as a high-resolution industrial camera for acquiring image data. For example, the pixel accuracy of the camera module can be 0.1 mm / pixel in the width direction of the conveyor channel 111, and 200k lines per second along the conveying direction of the conveyor channel 111, supporting a production line speed of 10 m / s, and can clearly capture the tiny foreign fiber details in the fiber web. The light source module 130 can be a high-brightness LED surface light source, which provides uniform and stable illumination for the camera module 120, ensuring that the fiber web image is clear and shadow-free. The camera module 120 and the light source module 130 are respectively arranged on opposite sides of the thickness direction of the conveyor channel 111. The light source illuminates the fiber web in the conveyor channel 111, and the camera captures the fiber web image through the conveyor channel 111.

[0042] The rejection module 140 is located on the body 110. The rejection module 140 includes a plurality of nozzles 141 corresponding to the conveying channel 111. The plurality of nozzles 141 are distributed along the width direction of the conveying channel 111, and the plurality of nozzles 141 are located on the rear side of the foreign fiber detection device in the conveying direction of the conveying channel 111.

[0043] The number of nozzles 141 is not specifically limited; multiple nozzles 141 are distributed along the width of the conveying channel 111, covering the entire width of the fiber web. The nozzles 141 are positioned behind the foreign fiber detection device in the conveying direction of the conveying channel 111, ensuring that the nozzles 141 can promptly remove foreign fibers after the camera module 120 detects them. It is understood that the more nozzles 141 there are, and the smaller the size of the nozzles 141, the higher the removal accuracy, facilitating the precise removal of tiny foreign fibers from the fiber web.

[0044] The recycling module 150 is located on the body 110. The recycling module 150 includes a recycling channel that communicates with the conveying channel 111. The recycling channel and a plurality of nozzles 141 are arranged on opposite sides of the thickness direction of the conveying channel 111.

[0045] The recycling channel can adopt a pipe structure to collect foreign fibers blown out by nozzle 141, so as to prevent foreign fibers from scattering in the equipment or production environment and affecting production order or product quality.

[0046] In actual operation, after being processed by the carding machine 200, the fibers enter the flat conveying channel 111 of the machine body 110. The light source module 130 illuminates the fiber web inside the conveying channel 111, and the camera module 120 captures images of the fiber web in real time and transmits them to the control system. The control system analyzes the images using image processing technology. If foreign fibers are detected, it controls multiple nozzles 141 located behind the foreign fiber detection device to blow the foreign fibers out of the conveying channel 111. The blown-out foreign fibers are collected through the corresponding recycling channel.

[0047] According to the embodiment of this application, the foreign fiber removal device 100, through the coordinated design of the machine body 110, the foreign fiber detection device, the removal module 140, and the recovery module 150, can efficiently detect and remove tiny foreign fibers in the combed fibers. The flat conveyor channel 111, combined with a high-resolution camera and a uniformly illuminated light source module 130, ensures the accuracy of foreign fiber detection; multiple nozzles 141 distributed along the width of the conveyor channel 111 can remove foreign fibers across the entire width of the fiber web; the recovery channel ensures that the removed foreign fibers are properly handled, avoiding secondary contamination. The overall structure is simple and compact, with low cost, easy to install and modify, effectively improving the efficiency and quality of foreign fiber handling in the nonwoven fabric production process, and reducing the pressure of subsequent roll-to-roll inspection.

[0048] Please see Figure 1 , Figure 2 and Figure 3 According to some embodiments of this application, the recycling module 150 may include: a recycling pipe 151, a collection pipe 152, and a recycling fan 153.

[0049] The recycling pipe 151 is located inside the body 110. One end of the recycling pipe 151 is connected to the conveying channel 111 and corresponds to multiple nozzles 141.

[0050] The recycling pipe 151 is located inside the machine body 110, with one end connected to the conveying channel 111. This connection end corresponds to the positions of multiple nozzles 141, ensuring that the foreign fibers blown out by the nozzles 141 can smoothly enter the recycling pipe 151. The flow cross-sectional shape of the recycling pipe 151 can be designed according to the internal space and requirements of the machine body 110. To effectively receive the foreign fibers in the width direction of the entire conveying channel 111, a rectangular cross-section can be adopted, and the material can be smooth stainless steel or plastic to reduce the residue and blockage of foreign fibers in the pipe.

[0051] The collection pipe 152 is connected to the outside of the body 110. The collection pipe 152 is connected to the other end of the recycling pipe 151. The recycling pipe 151 and the collection pipe 152 form a recycling channel.

[0052] The collection pipe 152 is connected to the outside of the machine body 110, allowing foreign fibers from the recycling pipe 151 to be discharged outside the machine body 110 for easy recycling and to prevent contamination of the equipment and production workshop. In some examples, the end of the collection pipe 152 furthest from the machine body 110 may have a foreign fiber outlet, facing downwards, which can be used for recycling by placing a recycling bin or other device at the outlet. In other examples, the end of the collection pipe 152 furthest from the machine body 110 can be directly connected to the foreign fiber processing equipment. Its length and direction can be adjusted according to the actual production workshop layout, and the material must also consider wear resistance and ease of cleaning. The collection pipe 152 can be made of rigid PVC material for easy installation and maintenance.

[0053] The recovery fan 153 is connected between the recovery pipe 151 and the collection pipe 152. The recovery fan 153 is used to drive the air in the recovery pipe 151 to flow into the collection pipe 152.

[0054] A recovery fan 153 is installed between the recovery pipe 151 and the collection pipe 152, serving as the power source for airflow within the recovery channel. The recovery fan 153 can be a centrifugal fan, which generates negative pressure during operation, driving air from the recovery pipe 151 towards the collection pipe 152. This, in turn, moves the foreign fibers blown out by the nozzle 141 along the recovery channel, ultimately collecting them at a designated location. The recovery fan 153 can be securely connected between the recovery pipe 151 and the collection pipe 152 via pipe interfaces or flanges, forming a complete recovery channel system.

[0055] When the nozzle 141 of the rejection module 140 blows the foreign fiber out of the conveying channel 111, the recovery fan 153 starts, creating a negative pressure airflow within the recovery channel. Under the influence of the airflow, the foreign fiber enters the collection pipe 152 through the recovery pipe 151 and is transported to the designated collection location, completing the foreign fiber recovery process. The corresponding arrangement of the recovery pipe 151 with the nozzle 141 and the conveying channel 111 ensures smooth foreign fiber recovery; the external connection of the collection pipe 152 facilitates centralized processing of the recovered foreign fiber; the power provided by the recovery fan 153 ensures the continuity and reliability of the recovery process, preventing foreign fiber residue or scattering in the production environment, further improving the working efficiency and cleanliness of the foreign fiber rejection equipment 100, reducing the workload of manual cleaning, and ensuring the orderly operation of the production line.

[0056] Please see Figure 3 and Figure 4 According to some embodiments of this application, the recycling pipe 151 may include a first section 1511, a second section 1512, and a third section 1513 connected sequentially along its flow direction. The inlet end of the first section 1511 is connected to the conveying channel 111, and the flow direction of the first section 1511 corresponds to the blowing direction of the nozzle 141. The third section 1513 is a cylindrical shape extending along the width direction of the conveying channel 111. The widths of the first section 1511 and the second section 1512 correspond to the width of the conveying channel 111. The second section 1512 surrounds the third section 1513 and is arranged in a spiral shape. The inlet end of the second section 1512 is smoothly connected to the outlet end of the first section 1511, and the outlet end of the second section 1512 is smoothly connected to the side wall of the third section 1513. The recycling fan 153 is connected to one end of the third section 1513 in the width direction of the conveying channel 111.

[0057] The first section 1511, with its inlet end connected to the conveying channel 111, is the starting part for foreign fibers to enter the recycling pipe 151. The flow direction corresponds to the blowing direction of the nozzle 141, which allows the foreign fibers blown out by the nozzle 141 to smoothly enter the recycling pipe 151, reducing collision loss of foreign fibers when entering the pipe. Specifically, along the flow direction of foreign fibers, the first section 1511 is set in a rectangular branch pipe shape.

[0058] The second section 1512 surrounds the third section 1513 in a spiral shape, and its width corresponds to the width of the conveying channel 111. This spiral structure increases the flow path length of the foreign fibers within the pipe, allowing them more time to mix with the airflow and be propelled forward. Furthermore, the centrifugal force of the spiral structure prevents the foreign fibers from accumulating within the pipe. The inlet end of the second section 1512 is smoothly connected to the outlet end of the first section 1511, and the outlet end is smoothly connected to the side wall of the third section 1513. This smooth connection reduces the risk of the foreign fibers getting stuck at pipe bends, ensuring smooth fiber transport.

[0059] The third section 1513 is a cylindrical shape extending along the width of the conveying channel 111. The length of the third section 1513 along its axial direction also corresponds to the width of the conveying channel 111, enabling it to receive and centrally convey foreign fibers from the second section 1512. A recovery fan 153 is connected to one end of the third section 1513 along the width of the conveying channel 111, allowing the foreign fibers entering the third section 1513 to move along the axial direction of the third section 1513. This facilitates the centralized recovery of foreign fibers and avoids situations where insufficient local suction leads to fiber residue.

[0060] In actual operation, after the nozzle 141 blows the foreign fiber out of the conveying channel 111, the foreign fiber enters the first section 1511 of the recovery pipe 151 under the action of airflow. Since the first section 1511 corresponds to the blowing direction of the nozzle 141, the foreign fiber can enter smoothly. Under the negative pressure generated by the recovery fan 153, the foreign fiber then enters the spiral second section 1512, and then enters the third section 1513 through the side wall of the third section 1513. It then moves along the axial direction of the third section 1513 to the recovery fan 153, and is finally blown into the collection pipe 152, completing the recovery of the foreign fiber. The segmented and specially structured recovery pipe 151 design can significantly improve the efficiency and stability of foreign fiber recovery, and effectively avoid foreign fiber accumulation and blockage.

[0061] Please see Figure 3 and Figure 4 According to some embodiments of this application, the sidewall of the first segment 1511 in the thickness direction may be provided with an air inlet 1514. The air inlet 1514 is located near the inlet end of the first segment 1511, and the air inlet direction of the air inlet 1514 is set at an acute angle to the flow direction of the first segment 1511.

[0062] The air inlet 1514 is located on the thickness-direction sidewall of the first section 1511, close to the inlet end of the first section 1511. Its function is to balance the pressure between the recovery channel and the conveying channel 111, preventing excessive negative pressure generated by the recovery fan 153 from drawing the fiber mesh in the conveying channel 111 into the recovery pipe 151. The air inlet 1514 can be strip-shaped, and the length of the strip-shaped air inlet 1514 can be the same as the width of the first section 1511.

[0063] The air intake direction is set at an acute angle to the flow direction, so that the air entering from the air intake 1514 forms a specific airflow direction in the first section 1511, which matches the direction in which the foreign fiber is ejected from the nozzle 141. For example, the acute angle between the air intake direction and the flow direction can be set to 30°-60°. When the nozzle 141 blows the foreign fiber into the first section 1511, the foreign fiber moves forward under the action of the high-pressure air ejected from the nozzle 141. At the same time, the air entering from the air intake 1514 pushes the foreign fiber from behind, so that the foreign fiber can flow more smoothly along the first section 1511 to the second section 1512, which ensures that the foreign fiber is stably recovered and does not interfere with the normal transport of the fiber web in the transport channel 111.

[0064] The air inlet 1514 is directly opened on the side wall in the thickness direction of the first section 1511 so that the internal space of the first section 1511 is connected to the external space outside the conveying channel 111. By controlling the position, size and air inlet angle of the air inlet 1514, the air flow rate and direction entering the recovery pipe 151 are adjusted, which cooperates with the process of the nozzle 141 blowing foreign fibers.

[0065] In actual operation, the recovery fan 153 continuously generates negative pressure. Since the air inlet 1514 is close to the inlet end of the first section 1511 and the air intake direction is at an acute angle to the flow direction, most of the air enters the first section 1511 from the air inlet 1514. When the nozzle 141 blows the foreign fiber into the first section 1511, the foreign fiber moves forward under the action of the high-pressure air in the nozzle 141. At the same time, the air entering from the air inlet 1514 creates a thrust behind the foreign fiber, driving the foreign fiber to flow along the first section 1511 to the second section 1512. Finally, under the negative pressure of the recovery fan 153, it is transported to the collection pipe 152 through the second section 1512 and the third section 1513. The fiber web in the conveying channel 111 is not sucked into the recovery pipe 151 due to the buffering effect of the air inlet 1514.

[0066] An air inlet 1514 with a specific position and angle is set on the side wall of the first section 1511, effectively resolving the contradiction between the negative pressure of the recovery fan 153 and the fiber web conveying in the conveying channel 111. This ensures stable recovery of foreign fibers under the negative pressure generated by the recovery fan 153 while preventing the fiber web from being accidentally sucked in, thus improving the stability and reliability of the equipment operation. At the same time, the synergistic effect of the air inlet 1514 and the nozzle 141 blowing away foreign fibers optimizes the conveying process of foreign fibers in the recovery pipeline 151, reduces the risk of foreign fiber residue and blockage in the first section 1511, and further improves the working efficiency and cleaning effect of the foreign fiber removal equipment 100.

[0067] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5According to some embodiments of this application, the conveying channel 111 is set at an angle to the horizontal direction, the conveying channel 111 is located on the front side of the body 110, the camera module 120 is located on the rear side of the conveying channel 111, and the light source module 130 is located on the front side of the conveying channel 111.

[0068] The conveying channel 111 is arranged at an angle, which is not specifically limited and can be set to 15°-75°. The fiber web in the conveying channel 111 moves from bottom to top under the action of the negative pressure fan. The conveying channel 111 is located on the front side of the machine body 110, which facilitates the overall structural layout of the equipment. The front location makes it more intuitive and convenient for the fiber to enter and exit the conveying channel 111, and also makes it easier for operators to observe and maintain the equipment.

[0069] Please see Figures 1 to 3 According to some embodiments of this application, an inspection plate 160 may be provided on the front side of the conveying channel 111. The inspection plate 160 can be flipped and installed on the body 110. The inspection plate 160 corresponds to the camera module 120, and the light source module 130 is installed on the inspection plate 160.

[0070] The inspection plate 160 is located at the front of the conveyor channel 111, and its main function is to facilitate equipment maintenance and debugging. The inspection plate 160 adopts a flip-up installation method, for example, it can be installed on the machine body 110 via hinge, rotating shaft, or other means. This design allows operators to quickly open the inspection plate 160 and directly observe the interior of the conveyor channel 111, facilitating the cleaning of residual fibers or inspection of equipment components. The inspection plate 160 can be made of high-strength and corrosion-resistant metal materials (such as stainless steel) or engineering plastics to ensure its durability and stability.

[0071] The inspection plate 160 is positioned corresponding to the camera module 120, ensuring that after the inspection plate 160 is flipped open, the operator can clearly view the camera's shooting area, and can also inspect and maintain the camera module 120. For example, the size of the inspection plate 160 can be designed according to the field of view of the camera module 120 and the width of the conveyor channel 111 to ensure complete coverage of the fiber mesh area captured by the camera.

[0072] Fixing the light source module 130 to the inspection plate 160 serves two purposes: firstly, it ensures a stable relative position between the light source and the camera module 120, guaranteeing stable lighting performance; secondly, when the inspection plate 160 is flipped, the light source module 130 also flips, facilitating cleaning, maintenance, or replacement of the light source. The light source module 130 can be fixed to the inspection plate 160 using bolts, clips, or other methods, making disassembly and installation convenient.

[0073] During normal operation, the inspection plate 160 is in the closed state. The light source module 130, mounted on the inspection plate 160, illuminates the fiber mesh inside the conveyor channel 111, while the camera module 120 at the rear captures images. When the equipment needs inspection, maintenance, or cleaning, the operator can flip the inspection plate 160 around the connecting shaft to open it. At this time, the inside of the conveyor channel 111 and the area captured by the camera module 120 can be directly observed, and the light source module 130 can also be operated. After maintenance is completed, the inspection plate 160 can be flipped back to its original position to restore equipment operation.

[0074] Please see Figure 1 , Figure 3 and Figure 5 According to some embodiments of this application, the rear side of the body 110 is provided with an open opening 112, which is connected to the installation space of the camera module 120, and the camera module 120 is provided with a maintenance plate 121 at the position corresponding to the opening 112.

[0075] An open opening 112 is provided on the rear side of the main body 110 to provide a convenient maintenance passage for the camera module 120. The shape of the opening 112 can be a regular shape such as rectangle or square, and its size is designed according to the dimensions of the camera module 120 and the space requirements for maintenance operations. The opening 112 is connected to the installation space of the camera module 120, allowing operators to directly access the camera module 120 without disassembling a large number of equipment parts.

[0076] The access panel 121 is located at the position corresponding to the opening 112 on the camera module 120. The access panel 121 can be installed in various ways, such as by bolt fixing, snap-fit ​​connection, or magnetic connection. If bolt fixing is used, the operator can open the access panel 121 by loosening the bolts; snap-fit ​​connection facilitates quick disassembly and installation; magnetic connection allows for tool-free operation, further improving maintenance efficiency. The access panel 121 can be made of the same or similar metal material as the body 110 to ensure structural strength and protective performance, and its surface can be treated with rust prevention to extend its service life.

[0077] According to some embodiments of this application, the light source module 130 may include at least one of a white light source, an ultraviolet light source, and a polarized light source.

[0078] White light sources, also known as ordinary white visible light sources, commonly include LED surface light sources and fluorescent lamps. White light sources provide full-spectrum illumination, suitable for most foreign fiber inspection scenarios. The emitted light evenly covers the fiber mesh, allowing the camera module 120 to acquire images with rich color and detail. For example, when using an LED surface light source as a white light source, its brightness and color temperature can be adjusted to meet the inspection needs of different types of fiber meshes. For colored foreign fibers with significant color contrast, white light sources can clearly reveal their outlines and positions.

[0079] Ultraviolet (UV) light sources utilize ultraviolet light for illumination. When foreign fibers contain substances that fluoresce under UV light (such as some plastic mulch films or fluorescently dyed foreign objects), the UV light source can clearly distinguish them from normal fibers. The UV light source can be a surface light source composed of an array of UV-LED beads, and the emitted UV wavelength can be selected according to actual detection needs, such as 365nm or 395nm. Irradiation with a UV light source can effectively detect tiny fluorescent foreign fibers that are difficult to detect with ordinary white light.

[0080] Polarized light sources eliminate interference such as surface reflections and specular reflections from fibers by generating polarized light, thus improving image clarity. Polarized light sources are typically composed of a polarizer and a conventional light source, or they may use polarized LEDs directly. When inspecting smooth-surfaced foreign fibers (such as plastic film fragments), polarized light sources reduce reflected light spots on the fiber surface, allowing the camera to more accurately capture the true shape and location of the foreign fibers. For example, when inspecting fiber webs containing plastic film fragments, polarized light sources effectively suppress reflections from the plastic film surface, improving inspection accuracy.

[0081] The white light source, ultraviolet light source, and polarized light source in the light source module 130 can be set individually according to actual needs, or they can be arranged in a reasonable layout and combination on the corresponding positions of the inspection plate 160 or the machine body 110. When multiple light sources are combined, they can be fixed by structures such as brackets and slots. Each light source is electrically connected to the control system, and the control system controls the opening and closing of different light sources according to the detection program.

[0082] When the equipment is running, the control system selects and activates the appropriate light source based on the preset detection mode or the characteristics of the fiber web to be detected. For detecting foreign fibers with ordinary color differences, a white light source can be activated to illuminate the fiber web, and the camera module 120 acquires the image. For detecting fluorescent foreign fibers, an ultraviolet light source is activated to make the fluorescent foreign fibers visible under ultraviolet light, and the camera captures the image. For foreign fibers susceptible to reflection interference, a polarized light source is activated to eliminate reflection before the camera takes the picture. After the image is transmitted to the control system, the foreign fibers are analyzed and identified through image processing algorithms, and the rejection module 140 is controlled to perform the rejection operation. This greatly enhances the foreign fiber rejection equipment 100's ability to detect different types of foreign fibers. The flexible combination of multiple light sources can adapt to complex and diverse foreign fiber detection scenarios. Whether it is ordinary colored foreign fibers, fluorescent foreign fibers, or easily reflective foreign fibers, accurate identification can be achieved, effectively improving the accuracy and comprehensiveness of foreign fiber detection, thereby improving the quality of nonwoven products, reducing the defect rate caused by foreign fiber residue, and also enhancing the applicability and versatility of the equipment in different production environments.

[0083] Please see Figure 1 , Figure 2 and Figure 3According to some embodiments of this application, the body 110 is provided with at least two air storage tanks 170, and the air storage tanks 170 are connected to the nozzle 141 through pipelines.

[0084] The number of air tanks 170 installed on the body 110 is at least two, for example, two, three or more. The air tanks 170 are used to store compressed air to provide a stable and sufficient air source for the nozzles 141. The air tanks 170 are usually made of high-strength steel or aluminum alloy to ensure that they can withstand high air pressure, and their shape can be cylindrical, elliptical, etc.

[0085] The air supply system first stores compressed air in the air tank 170 on the machine body 110. When the control system detects foreign fibers in the fiber web, it controls the corresponding nozzle 141 to open. At this time, the compressed air in the air tank 170 is quickly delivered to the nozzle 141 through the pipeline. The nozzle 141 ejects high-pressure air, forming a high-speed airflow that blows the foreign fibers out of the conveying channel 111. The arrangement of multiple air tanks 170 ensures that even if multiple nozzles 141 work continuously for a short period of time, a stable air pressure can be provided, avoiding poor foreign fiber removal effect due to insufficient air pressure.

[0086] The design of having at least two air tanks 170 on the body 110 and connecting them to the nozzles 141 via pipelines significantly improves the operational stability and reliability of the rejection module 140 of the foreign fiber rejection equipment 100. Multiple air tanks 170 can store a large amount of compressed air, providing a continuous and stable air source for the nozzles 141, ensuring that the nozzles 141 maintain sufficient jet pressure during continuous foreign fiber rejection, effectively improving the foreign fiber rejection efficiency and success rate.

[0087] Please see Figure 1 , Figure 2 and Figure 3 According to some embodiments of this application, the body 110 may also be provided with a variable diameter pipe 180, which is connected to the outlet end of the conveying channel 111.

[0088] A reducing pipe 180 is installed on the body 110 and connected to the outlet end of the conveying channel 111. Its diameter gradually changes along the fiber conveying direction. The reducing pipe 180 can be made of metal (such as stainless steel or aluminum alloy) or high-strength plastic (such as PVC) to ensure structural strength and wear resistance. The inlet diameter of the reducing pipe 180 matches the outlet diameter of the conveying channel 111, and the outlet diameter can be reduced or increased according to subsequent process requirements. In some examples, the width of the outlet end of the reducing pipe 180 can gradually decrease, while the thickness can gradually increase to facilitate processing by subsequent equipment.

[0089] When the fiber web, after foreign fiber removal treatment, enters the reducing pipe 180 from the outlet of the conveying channel 111, the flow velocity and pressure distribution of the fiber web within the pipe change due to the change in pipe diameter. If the reducing pipe 180 is a narrowing design, the fiber web flow velocity increases, which can improve the dispersion and bulkiness of the fibers, allowing them to enter subsequent process stages more evenly. If it is an expanding design, the fiber web flow velocity can be reduced, minimizing impact on subsequent equipment, protecting the equipment, and ensuring a smooth transition of the fiber web. Furthermore, the reducing pipe 180 can also optimize the flow state of the fiber web within the pipe by adjusting the slope of the pipe diameter change, further improving the connection between the foreign fiber removal equipment 100 and subsequent processes.

[0090] The variable diameter pipe 180 optimizes the transition of the fiber web from the conveying channel 111 to subsequent processes. By changing the pipe diameter, it adjusts the flow rate and pressure of the fiber web, improving fiber dispersion and uniformity, reducing the risk of fiber accumulation and blockage, and enhancing the operational stability and production efficiency of the entire production line. Simultaneously, the variable diameter pipe 180 offers flexible and diverse connection methods, facilitating adjustments and replacements according to different production needs, enhancing the adaptability and scalability of the equipment, and providing more reliable technical support for nonwoven fabric production.

[0091] It should be noted that the fiber web mentioned in the embodiments of this application can be a cotton web or other nonwoven materials such as fiber webs.

[0092] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0093] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0094] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0095] In the description of this application, "multiple" means two or more.

[0096] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0097] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0098] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0099] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A foreign fiber removing apparatus characterized by comprising: include: The machine body is provided with a conveying channel for conveying fibers, and the conveying channel is flat. The foreign fiber detection device includes a camera module and a light source module disposed on the body, the camera module and the light source module being disposed on opposite sides of the thickness direction of the conveying channel; A rejection module is provided on the machine body. The rejection module includes multiple nozzles corresponding to the conveying channel. The multiple nozzles are distributed along the width direction of the conveying channel, and the multiple nozzles are located on the rear side of the foreign fiber detection device in the conveying direction of the conveying channel. A recycling module is provided on the machine body. The recycling module includes a recycling channel that communicates with the conveying channel. The recycling channel and a plurality of nozzles are arranged on opposite sides of the conveying channel in the thickness direction.

2. The foreign fiber removing apparatus according to claim 1, characterized by, The recycling module includes: A recycling pipe is located inside the machine body, one end of which is connected to the conveying channel and corresponds to a plurality of nozzles; A collection pipe is connected to the outside of the machine body, and the other end of the collection pipe is connected to the recycling pipe. The recycling pipe and the collection pipe together form the recycling channel. A recovery fan is connected between the recovery pipe and the collection pipe, and the recovery fan is used to drive the air in the recovery pipe to flow into the collection pipe.

3. The foreign fiber removing apparatus according to claim 2, characterized by The recycling pipeline includes a first section, a second section, and a third section connected sequentially along its flow direction. The inlet end of the first section is connected to the conveying channel, and the flow direction of the first section corresponds to the blowing direction of the nozzle. The third section is a cylindrical section extending along the width direction of the conveying channel. The widths of the first and second sections correspond to the width of the conveying channel. The second section is spirally arranged around the third section. The inlet end of the second section is smoothly connected to the outlet end of the first section, and the outlet end of the second section is smoothly connected to the side wall of the third section. The recycling fan is connected to one end of the third section in the width direction of the conveying channel.

4. The foreign fiber removing apparatus according to claim 3, characterized by An air inlet is provided on the side wall in the thickness direction of the first segment. The air inlet is located near the entrance end of the first segment, and the air intake direction of the air inlet is set at an acute angle to the flow direction of the first segment.

5. The foreign fiber removing apparatus according to claim 1, wherein The conveying channel is set at an angle to the horizontal direction. The conveying channel is located on the front side of the machine body, the camera module is located on the rear side of the conveying channel, and the light source module is located on the front side of the conveying channel.

6. The foreign fiber removing apparatus according to claim 5, wherein An inspection plate is provided on the front side of the conveying channel. The inspection plate can be flipped and installed on the machine body. The inspection plate corresponds to the camera module, and the light source module is installed on the inspection plate.

7. The foreign fiber removing apparatus according to claim 5, wherein The rear side of the body is provided with an open opening, which is connected to the installation space of the camera module. The camera module is provided with a maintenance plate at the position corresponding to the opening.

8. The foreign fiber removing apparatus according to any one of claims 1 to 7, characterized by The light source module includes at least one of a white light source, an ultraviolet light source, and a polarized light source.

9. The foreign fiber removing apparatus according to any one of claims 1 to 7, characterized by The machine body is equipped with at least two gas storage tanks, and the gas storage tanks are connected to the nozzles through pipelines.

10. The foreign fiber removing apparatus according to any one of claims 1 to 7, characterized by The machine body is also equipped with a variable diameter pipe, which is connected to the outlet end of the conveying channel.

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