A cotton web foreign fiber removal device

Abstract

This application discloses a foreign fiber removal device for cotton web, relating to the field of textile machinery and equipment. It includes a frame and a feeding conveyor belt, a foreign fiber detection component, and a spray valve assembly mounted on the frame. An impurity collection channel is fixedly provided at the feeding end of the feeding conveyor belt. The impurity collection channel has an upper opening as its inlet and a lower opening as its outlet, with the inlet plane located below the conveying surface of the feeding conveyor belt. The foreign fiber detection component and the spray valve assembly are located above the feeding conveyor belt and the impurity collection channel, with the detection end of the foreign fiber detection component and the ejection end of the spray valve assembly both facing the inlet of the impurity collection channel. This device can perform online foreign fiber detection and positioning on the cotton web output from the carding machine, and spray airflow to accurately eject foreign fibers. Combined with the fan and impurity collection channel, it quickly guides foreign fibers away from the production line, thereby effectively removing foreign fiber impurities from the cotton web and achieving online removal of foreign fibers from the cotton web.

Description

Technical Field

[0001] This application relates to the technical field of textile machinery and equipment, and in particular to a cotton web foreign fiber removal device. Background Technology

[0002] All-cotton spunlace nonwoven fabric, also known as pure cotton spunlace nonwoven fabric, is made from natural pure cotton fibers. The process involves opening and loosening the cotton, then using a high-precision carding machine, a web-laying machine, and a drafting machine to form a web. Under pressure, numerous needle-like water jets are formed, which cause the cotton fibers to entangle into a fabric through a spunlace machine. It is mainly used in medical and hygiene products, household hygiene products, and personal care products such as pure cotton face towels and soft towels.

[0003] The production process of all-cotton spunlace nonwoven fabric in the post-bleaching process mainly includes the following steps: material preparation, cleaning, opening, carding, debleaching, drying, opening, carding, cross-laying, multi-roller drafting, spunlace, tumble drying, drying, and finished product winding. The carding process is as follows: the pure cotton fibers after opening and loosening are further loosened into single fibers using a carding machine, and impurities (such as cottonseed hulls, short fibers, and dust) are removed from the fibers by the carding machine's needle cloth, straightening and arranging the disordered fibers into parallel lines. The carded fibers are output from the carding machine in the form of a uniform thin cotton web (usually less than 1 mm thick). At the same time, impurities such as broken seeds and short fibers left over from the cleaning process are removed during this process.

[0004] However, in actual production, due to the limitations of the carding machine's design (which removes cotton fibers and other cotton-derived impurities such as short fibers and broken seeds), carding machines struggle to effectively remove non-cotton foreign fiber impurities between cotton fibers. These unremoved foreign fibers then enter the cross-laying and hydroentangling processes with the cotton web, easily leading to product quality defects and hygiene and safety risks. Utility Model Content

[0005] In view of the above-mentioned defects or improvement needs of the prior art, the purpose of this application is to provide a cotton web foreign fiber removal device to remove foreign fibers from the cotton web output from the carding machine and remove non-cotton foreign fiber impurities between cotton fibers.

[0006] To achieve the above objectives, this application provides a foreign fiber removal device for cotton webs, comprising a frame and a feeding conveyor belt, a foreign fiber detection component, and a spray valve assembly mounted on the frame. The feeding conveyor belt has a fixed impurity collection channel with openings at both the top and bottom. The upper opening of the impurity collection channel is its inlet, and the lower opening is its outlet. The plane of the inlet of the impurity collection channel is located below the conveying surface of the feeding conveyor belt. The foreign fiber detection component and the spray valve assembly are located above the feeding conveyor belt and the impurity collection channel, with the detection end of the foreign fiber detection component and the ejection end of the spray valve assembly both facing the inlet of the impurity collection channel.

[0007] Furthermore, a transmission assembly is provided on the frame, and the feeding conveyor belt is installed on the frame via the transmission assembly. The feeding conveyor belt is provided with a starting point and a ending point.

[0008] Furthermore, the transmission assembly includes a first driving component, a mounting frame, and a second driving component. The second driving component is fixedly mounted on the mounting frame, and the frame of the feeding conveyor belt is fixedly connected to the driving end of the second driving component. The feeding conveyor belt moves up and down through the second driving component. The mounting frame and the second driving component are slidably mounted on the frame through the first driving component, and the sliding direction of the mounting frame and the second driving component is consistent with the direction in which the feeding conveyor belt conveys materials.

[0009] Furthermore, a feeding conveyor belt is provided between the frame and the carding machine. The feeding end of the feeding conveyor belt is located below the cotton web outlet of the carding machine, and the unloading end is located in front of the feeding end of the feeding conveyor belt. When the feeding conveyor belt is at its conveying starting point, the feeding conveyor belt is located below the feeding conveyor belt, and the projection of the unloading end of the feeding conveyor belt in the vertical direction falls on the feeding end of the feeding conveyor belt.

[0010] Furthermore, the speed at which the feeding conveyor belt transports materials and the speed at which the material conveyor belt transports materials are both consistent with the speed at which the cotton web is output from the carding machine.

[0011] Furthermore, the foreign fiber detection component includes a camera module, a light source module, an image processing module, and a light source control module. The camera module is fixedly mounted on the frame with its shooting end facing the feeding end of the feeding conveyor belt. The light source module is adjustablely rotatably mounted on the frame, and the light source illumination range of the light source module is adapted to overlap with the shooting range of the camera module.

[0012] Furthermore, the spray valve assembly includes a nozzle plate, an air pipe, and a solenoid valve. The nozzle plate and the solenoid valve are both fixedly mounted above the feeding conveyor belt. The nozzle plate has a nozzle hole and an air inlet. The solenoid valve is connected to the air inlet end of the air pipe. The air outlet end of the air pipe is connected to the inlet of the air inlet. The outlet of the air inlet is connected to the inlet of the nozzle hole. The outlet of the nozzle hole is arranged facing the feed inlet of the impurity collection channel.

[0013] Furthermore, multiple nozzle holes and air inlets are evenly arranged along the length of the nozzle plate, and the multiple nozzle holes and multiple air inlets correspond one-to-one.

[0014] Furthermore, multiple solenoid valves are provided along the bandwidth of the feeding conveyor belt, and the multiple air inlets are divided into multiple groups along the bandwidth of the feeding conveyor belt. Each group has at least one air inlet. Each solenoid valve is connected to a group of air inlets through an air pipe and controls the air passage opening and closing of that group of air inlets accordingly.

[0015] Furthermore, the outlet of the impurity collection channel is connected to a feeding pipe and a feeding fan. The feeding fan is fixedly installed on the frame. The feeding pipe is located between the impurity collection channel and the feeding fan. The negative pressure inlet of the feeding fan is connected to the outlet of the impurity collection channel through the feeding pipe, and the positive pressure outlet of the feeding fan is arranged downwards.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. The device is equipped with a foreign fiber detection component (including a camera module, a light source module, and an image processing module) and a spray valve component. It can perform online foreign fiber detection and positioning on the cotton web output from the carding machine, and spray airflow to accurately knock out foreign fibers. With the help of a fan and an impurity collection channel, the foreign fibers are quickly guided away from the production line, thereby effectively removing foreign fiber impurities from the cotton web. This reduces problems such as uneven web thickness and water spunlace needle blockage caused by foreign fibers in subsequent processes, thereby reducing product quality defects and hygiene and safety risks.

[0018] 2. The device employs multiple design features (firstly, the speeds of the feeding conveyor belt and the delivery conveyor belt are consistent with the output speed of the carding machine, avoiding deformation of the cotton web caused by speed differences; secondly, the position of the delivery conveyor belt can be adjusted through the transmission components to stably support the cotton web and maintain appropriate tension) to ensure that the cotton web is free from wrinkles, breaks, or accumulation during transmission, reducing cotton web loss during transmission and ensuring production continuity and material utilization. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the embodiments of this application, the carding machine, and the feeding conveyor belt (it should be noted that the specific structure of the carding machine is not shown, and is only used for illustration).

[0021] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application from the perspective of the feeding end of the device;

[0022] Figure 3This is a schematic diagram of the overall structure of an embodiment of this application from the perspective of the device's unloading end;

[0023] Figure 4 This is a partial schematic diagram of an embodiment of this application, taken from the perspective of the feeding end of the device, to show the specific structure of the transmission assembly, the foreign fiber detection assembly, and the spray valve assembly;

[0024] Figure 5 This is a structural diagram to show the feeding conveyor belt, impurity collection channel, discharge pipe and discharge fan;

[0025] Figure 6 This is a side view of the embodiment of this application and the carding machine and feeding conveyor when the feeding conveyor belt is located at its starting point;

[0026] Figure 7 This is a side view of the embodiment of this application and the carding machine and feeding conveyor when the feeding conveyor is located at its end point;

[0027] Figure 8 This is a structural schematic diagram of the spray valve assembly;

[0028] Figure 9 This is a top view of the spray valve plate;

[0029] Figure 10 yes Figure 9 Schematic diagram of the cross-sectional structure along line AA;

[0030] Figure 11 yes Figure 8 An enlarged schematic diagram of part A in the middle.

[0031] Reference numerals: 1. Carding machine; 2. Feeding conveyor belt; 3. Frame; 31. Frame beam; 32. Support leg; 4. Feeding conveyor belt; 5. Transmission assembly; 51. First drive component; 52. Mounting bracket; 53. Second drive component; 6. Foreign fiber detection assembly; 61. Camera module; 611. Industrial camera; 612. Camera mounting bracket; 613. Acrylic background plate; 62. Light source module; 7. Spray valve assembly; 71. Nozzle plate; 711. Nozzle hole; 712. Air inlet; 72. Air pipe; 73. Solenoid valve; 8. Impurity collection channel; 9. Feeding pipe; 10. Feeding fan. Detailed Implementation

[0032] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figure 1-11 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0033] like Figure 1-11As shown, this application provides a cotton web foreign fiber removal device (hereinafter referred to as "this device" or "cotton web foreign fiber removal device"), which is located at the rear end of the carding machine 1 and is used to remove foreign fibers from the cotton web output at the outlet, effectively removing non-cotton foreign fiber impurities from the cotton web and continuously transporting the cotton web.

[0034] Specifically, refer to Figure 1 and Figure 2 The foreign fiber removal device for the cotton web includes a frame 3 and a feeding conveyor belt 4, a transmission assembly 5, a foreign fiber detection assembly 6, a spray valve assembly 7, and a control system (not shown) mounted on the frame 3. The feeding conveyor belt 4 is mounted on the frame 3 via the transmission assembly 5 and is used to receive and transport the cotton web output from the carding machine 1. The foreign fiber detection assembly 6 and the spray valve assembly 7 are both located above the feeding conveyor belt 4. The foreign fiber detection assembly 6 is used to detect, identify, and locate foreign fibers in the cotton web on the feeding conveyor belt 4, and the spray valve assembly 7 is used to eject the detected foreign fibers from the cotton web. The feeding conveyor belt 4, the transmission assembly 5, the foreign fiber detection assembly 6, and the spray valve assembly 7 are all electrically connected to the control system.

[0035] In this embodiment, the frame 3 is preferably a portal frame, which includes a horizontally arranged beam 31, two sets of support legs 32 fixed at both ends of the beam 31 for supporting the beam 31, and a number of support rods and reinforcing members disposed between the two sets of support legs 32. The support legs 32 are arranged vertically, the beam 31 is located at the top of the support legs 32, and the length direction of the beam 31 is the length direction of the frame 3, the width direction of the beam 31 is the width direction of the frame 3, and the width direction of the feeding conveyor belt 4 is parallel to the length direction of the frame 3.

[0036] Furthermore, refer to Figure 1 , Figure 2 and Figure 3 A feeding conveyor belt 2 for transporting the cotton web is adaptively provided between the cotton web foreign fiber removal device and the carding machine 1. The feeding conveyor belt 2 is used to connect the cotton web foreign fiber removal device and the carding machine 1 and to stably transport the cotton web. The speed at which the feeding conveyor belt 2 transports the material is consistent with the speed at which the cotton web is output from the carding machine 1.

[0037] The frame 3 is located behind the unloading end of the feeding conveyor belt 2. The feeding conveyor belt 4 and the transmission assembly 5 are both located below the frame beam 31 of the frame 3, and the feeding conveyor belt 4 is installed between the two sets of support legs 32 of the frame 3 through the transmission assembly 5.

[0038] Specifically, refer to Figure 4 and Figure 5The feeding conveyor belt 4 includes a drive belt, active and driven idlers for supporting the drive belt and materials and adjusting the belt tension, a drive assembly for providing power to drive the drive belt, and a support structure for supporting the feeding conveyor belt 4. The drive assembly of the feeding conveyor belt 4 is electrically connected to the control system. The length direction of the drive belt and the support is consistent with the width direction of the frame 3, the width direction of the drive belt is consistent with the length direction of the frame 3, and the drive belt transports materials along the width direction of the frame 3.

[0039] The transmission assembly 5 includes a first drive component 51, a mounting bracket 52, and a second drive component 53. The first drive component 51 is preferably a rodless cylinder, and the second drive component 53 is preferably a cylinder. Both the first drive component 51 and the second drive component 53 are electrically connected to the control system. There are two sets of the first drive component 51, the mounting bracket 52, and the second drive component 53. The two sets of the first drive component 51, the mounting bracket 52, and the second drive component 53 are mounted opposite each other on two sets of support legs 32.

[0040] Reference Figure 4 and Figure 5 Taking any set of first driving component 51, mounting bracket 52, and second driving component 53 as an example, the first driving component 51 is fixedly installed on the inner side of the corresponding support leg 32, and the first driving component 51 is arranged horizontally. The cylinder movement direction of the first driving component 51 is consistent with the width direction of the frame 3. The mounting bracket 52 and the second driving component 53 are fixedly installed on the driving end of the first driving component 51, and the mounting bracket 52 and the second driving component 53 are slidably connected to the corresponding support leg 32 along the width direction of the frame 3. By controlling the operation of the cylinder of the first driving component 51, the mounting bracket 52 and the second driving component 53 can be driven to slide horizontally along the width direction of the frame 3. Furthermore, the second driving component 53 is fixedly installed on the mounting bracket 52 and is arranged vertically. The driving end of the second driving component 53 is fixedly connected to the bracket of the feeding conveyor belt 4, and the feeding conveyor belt 4 can move up and down in the vertical direction under the drive of the second driving component 53.

[0041] Through the transmission assembly 5, the feeding conveyor belt 4 can move up and down in the vertical direction with the second drive member 53 or move horizontally in the width direction of the frame 3 with the first drive member 51, so as to stably receive the cotton web at the unloading end of the first feeding conveyor belt 4 when the cotton web foreign fiber removal device is turned on, and to effectively pull and transmit the cotton web.

[0042] Furthermore, refer to Figure 6 and Figure 7 In this embodiment, the feeding conveyor belt 4 is provided with a transmission start point and a transmission end point. The feeding conveyor belt 4 receives and feeds the cotton web at its transmission start point, and at its transmission end point, the feeding conveyor belt 4 remains relatively stationary with the frame 3 to stably transmit the cotton web.

[0043] Specifically, the starting point of the feeding conveyor belt 4 is: the feeding conveyor belt 4 is located below the loading conveyor belt 2, and the projection of the unloading end of the loading conveyor belt 2 can fall on the loading end of the feeding conveyor belt 4; the ending point of the feeding conveyor belt is: the loading end of the feeding conveyor belt 4 is flush with the unloading end of the loading conveyor belt 2.

[0044] Because the cotton web is relatively light and the carding machine 1 outputs the cotton web at a relatively high speed, typically 30m / min to 70m / min, when the foreign fiber removal device for the cotton web in this embodiment is started, the operator can control the first drive component 51 and the second drive component 53 to drive the feeding conveyor belt 4 to its transmission starting point, so that the transmission speed of the feeding conveyor belt 4 is consistent with the transmission speed of the feeding conveyor belt 2. This allows the feeding conveyor belt 4 to effectively receive the cotton web falling from the unloading end of the feeding conveyor belt 2, avoiding cotton web accumulation or wrinkling problems caused by the transmission speed difference between the feeding conveyor belt 4 and the feeding conveyor belt 2 during transmission.

[0045] Furthermore, looking back Figure 4 and Figure 5 An impurity collection channel 8 with openings at the top and bottom is fixedly provided on the outer side of the feeding end of the feeding conveyor belt 2. The upper opening of the impurity collection channel 8 is its inlet and the lower opening is its outlet. The impurity collection channel 8 is designed to be narrow, and its opening cross-sectional area gradually decreases from top to bottom. The plane where the inlet of the impurity collection channel 8 is located is below the conveying surface of the feeding conveyor belt 4.

[0046] Reference Figure 4 and Figure 5 The foreign fiber detection component 6 includes a camera module 61, a light source module 62, an image processing module, and a light source control module.

[0047] Specifically, refer to Figure 4 The camera module 61 includes an industrial camera 611 and a camera mounting bracket 612 fixedly mounted on the frame beam 31 of the frame 3. In this embodiment, the industrial cameras 611 are preferably four groups, which are equally spaced along the length of the frame beam 31 and symmetrical with respect to the center line of the frame beam 31. The industrial cameras 611 are fixedly connected to the frame beam 31 through the camera mounting bracket 612. The shooting ends of the industrial cameras 611 are vertically downward. Multiple sets of observation ports for shooting by the industrial cameras 611 are opened through the frame beam 31, and transparent light-transmitting plates are fixedly installed at the observation ports.

[0048] The light source module 62 includes an LED light strip and a light strip mounting profile. The LED light strip is locked and fixed between two sets of support legs 32 of the frame 3 through the light strip mounting profile, and the light source of the LED light strip shines downward. The horizontal tilt angle of the LED light strip is adjusted through the light strip mounting profile. The light source control module consists of a light source control board and related controllers. The light source control board and related controllers are connected to the light source signal of the LED light strip. The control system is bidirectionally connected to the light source control module. The control system of the cotton web foreign fiber removal device realizes the opening and closing of the light source of the LED light strip and the adjustment of its brightness through the light source control module.

[0049] In a preferred embodiment of this application, the image processing module is an embedded processing unit that carries and runs an AI deep learning inference engine (i.e., an "AI module," which includes a hardware board and software code), such as an NVIDIA Jetson Nano, NVIDIA Jetson Orin Nano, iDSP intelligent processing module, or similar modules. The AI ​​module detects foreign fibers in cotton in real time based on a deep learning model and outputs the location, type, and confidence level of the foreign fibers, generating a removal command to the image processing module; the image processing module is directly connected to the industrial camera 611 and communicates bidirectionally with the control system.

[0050] Furthermore, refer to Figure 5 An acrylic background plate 613 is fixedly installed on the outside of the feed inlet of the impurity collection channel 8 for use with the camera module 61 and the light source module 62. The acrylic background plate 613 is a rectangular plate, with its length direction consistent with the length direction of the frame 3 and its width direction consistent with the width direction of the frame 3. The acrylic background plate 613 can be used with LED light strips to provide a clean, consistent, and non-reflective background for the industrial camera 611, reducing interference from ambient light and stray light, so that foreign fibers in the cotton web that are similar in color to cotton but slightly different can be clearly highlighted, forming sufficient contrast, making it easier for the foreign fibers to be identified by the camera algorithm.

[0051] The control system includes a host computer and a data information interaction module. The host computer and the data information interaction module are bidirectionally connected and provide a human-machine interface. The data information interaction module is bidirectionally connected to the LED light source control module, and its output is connected to the spray valve assembly 7. The image processing module analyzes each frame of the acquired cotton web in real time based on the high-resolution image and speed information, detects and locates foreign objects, and performs preliminary logical judgments based on the recognition results of the AI ​​module (such as the type, location, and confidence level of the foreign object, whether it reaches the activation threshold of the spray valve assembly 7). It then generates a high-speed control signal to the control system. The data information interaction module can receive the detection results from the AI ​​module and trigger the spray valve assembly 7 to eject the foreign fibers.

[0052] Furthermore, operators can set parameters (such as sensitivity, cotton cleaning level, equipment start-up and shutdown) through the control system, monitor the equipment's operating status (output, fault information, foreign fiber removal rate statistics, real-time image display, etc.), view historical data, perform system configuration and maintenance, and interact with the cloud platform for global scheduling and optimization.

[0053] Furthermore, in combination Figure 4 and Figure 8 The spray valve assembly 7 includes a nozzle plate 71, an air pipe 72, and a solenoid valve 73. Both the nozzle plate 71 and the solenoid valve 73 are fixedly mounted above the feeding conveyor belt 4.

[0054] Reference Figure 8 , Figure 9 and Figure 10 The nozzle plate 71 has a nozzle hole 711 and an air inlet 712. A solenoid valve 73 is connected to the air inlet end of the air pipe 72. The air outlet end of the air pipe 72 is connected to the inlet of the air inlet 712, and the outlet of the air inlet 712 is connected to the inlet of the nozzle hole 711. The outlet of the nozzle hole 711 faces the feed inlet of the impurity collection channel 8. By controlling the opening and closing of the solenoid valve 73, the airflow between the air inlet 712 and the nozzle hole 711 can be interrupted. Therefore, when the foreign fiber detection component 6 detects and identifies foreign fibers in the cotton web, it controls the airflow to be ejected from the outlet of the nozzle hole 711, thereby expelling the foreign fibers from the cotton web. (It should be noted that, for the sake of simplicity, the aforementioned...) Figures 1-5 (The trachea 72 is not shown in the text).

[0055] Furthermore, refer to Figure 8 , Figure 9 and Figure 11 In a preferred embodiment of this application, multiple solenoid valves 73, air inlets 712, and nozzle holes 711 are evenly arranged along the length of the nozzle plate 71 (i.e., the width direction of the feeding conveyor belt 4). Multiple air pipes 72 are provided. Each nozzle hole 711 corresponds one-to-one with each air inlet 712, and each air pipe 72 corresponds one-to-one with each air inlet 712. The multiple air inlets 712 are divided into multiple groups along the width direction of the feeding conveyor belt 4, with an equal number of air inlets 712 in each group, and each group containing at least one air inlet 712. Each solenoid valve 73 is connected to one group of air inlets 712 via multiple air pipes 72 and controls the airflow through that group of air inlets 712 accordingly. (It should be noted that...) Figure 8 The diagram only shows a single solenoid valve 73 and a single air tube 72.

[0056] When the foreign fiber detection component 6 detects and identifies foreign fibers in the cotton web, the control system can control the opening position and number of solenoid valves 73 in the spray valve component 7 according to the position of the foreign fibers identified by the foreign fiber detection component 6 and the speed of the cotton web movement, thereby achieving precise strike on the foreign fibers in the cotton web and realizing the removal of foreign fibers from the cotton web.

[0057] Furthermore, looking back Figure 4 and Figure 5 The discharge port of the impurity collection channel 8 is connected to a discharge pipe 9 and a discharge fan 10. The discharge fan 10 is fixedly installed on the frame 3. The discharge pipe 9 is preferably a bendable threaded pipe, located between the impurity collection channel 8 and the discharge fan 10. The negative pressure inlet of the discharge fan 10 is connected to the discharge port of the impurity collection channel 8 through the discharge pipe 9, and the positive pressure outlet is arranged downwards. When the foreign fiber detection component 6 detects foreign fibers, the discharge fan 10 can cooperate with the spray valve component 7 to provide negative pressure suction, sucking up the foreign fibers and impurity-containing cotton in the impurity collection channel 8 and the discharge pipe 9, and efficiently guiding the aforementioned foreign fibers and impurity-containing cotton away from the device.

[0058] In the operation of the foreign fiber removal device for cotton web disclosed in this application embodiment, the carding machine 1, the feeding conveyor belt 2 and the device are started. The feeding conveyor belt 2 is used to receive and convey the cotton web output from the outlet of the carding machine 1, so that the cotton web is steadily conveyed forward. Then, before the cotton web output from the carding machine 1 reaches the feeding conveyor belt 4, the feeding conveyor belt 4 is driven to its starting point. The feeding conveyor belt 4 receives, pulls, and transmits the cotton web from the unloading end of the loading conveyor belt 2, and controls the transmission speed of the feeding conveyor belt 4, the transmission speed of the loading conveyor belt 2, and the speed of the cotton web output from the carding machine 1 to be consistent. This avoids cotton web breakage or accumulation and wrinkling problems due to changes in the load and transmission speed during transmission. At the same time, the loading conveyor belt 2 and the feeding conveyor belt 4 continuously convey the cotton web forward. The foreign fiber detection component 6 detects, identifies, and locates foreign fibers in the cotton web. The detected foreign fibers are ejected by the spray valve component 7. The foreign fibers and impurities are removed from the production line by the impurity collection channel 8, the discharge pipe 9, and the discharge fan 10. This effectively removes foreign fiber impurities from the cotton web, which helps reduce problems such as uneven web thickness and water spunlace needle blockage caused by foreign fibers in subsequent processes, thereby reducing product quality defects and hygiene and safety risks.

[0059] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A web foreign fiber removal device characterized by: Includes a frame (3) and a feeding conveyor belt (4), a foreign fiber detection component (6) and a spray valve component (7) mounted on the frame (3). The feeding conveyor belt (4) is fixedly provided with an impurity collection channel (8) with openings at the top and bottom. The upper opening of the impurity collection channel (8) is its inlet and the lower opening is its outlet. The plane where the inlet of the impurity collection channel (8) is located is below the conveying surface of the feeding conveyor belt (4). The foreign fiber detection component (6) and the spray valve component (7) are located above the feeding conveyor belt (4) and the impurity collection channel (8), and the detection end of the foreign fiber detection component (6) and the ejection end of the spray valve component (7) are both arranged facing the feed inlet of the impurity collection channel (8).

2. A web foreign fiber removal apparatus according to claim 1 wherein: The frame (3) is provided with a transmission assembly (5), and the feeding conveyor belt (4) is installed on the frame (3) through the transmission assembly (5). The feeding conveyor belt (4) is provided with its transmission start point and transmission end point.

3. The foreign fiber removal device for cotton web according to claim 2, characterized in that: The transmission assembly (5) includes a first drive member (51), a mounting frame (52), and a second drive member (53). The second drive member (53) is fixedly mounted on the mounting frame (52). The frame of the feeding conveyor belt (4) is fixedly connected to the drive end of the second drive member (53). The feeding conveyor belt (4) moves up and down through the second drive member (53). The mounting frame (52) and the second drive member (53) are slidably mounted on the frame (3) through the first drive member (51). The sliding direction of the mounting frame (52) and the second drive member (53) is consistent with the direction of material conveying of the feeding conveyor belt (4).

4. A foreign fiber removal device for cotton web according to claim 2 or 3, characterized in that: A feeding conveyor belt (2) is provided between the frame (3) and the carding machine (1). The feeding end of the feeding conveyor belt (2) is located below the cotton web outlet of the carding machine (1), and the unloading end is located in front of the feeding end of the feeding conveyor belt (4). When the feeding conveyor belt (4) is located at its starting point, the feeding conveyor belt (4) is located below the loading conveyor belt (2), and the projection of the unloading end of the loading conveyor belt (2) in the vertical direction falls on the loading end of the feeding conveyor belt (4).

5. The foreign fiber removal device for cotton web according to claim 4, characterized in that: The speed at which the feeding conveyor belt (2) and the material conveyor belt (4) transport materials are both consistent with the speed at which the cotton web is output from the carding machine (1).

6. A foreign fiber removal device for cotton web according to any one of claims 1-3, characterized in that: The foreign fiber detection component (6) includes a camera module (61), a light source module (62), an image processing module, and a light source control module. The camera module (61) is fixedly installed on the frame (3) and the shooting end of the camera module (61) is arranged facing the feeding end of the feeding conveyor belt (4). The light source module (62) is adjustablely rotatably installed on the frame (3), and the light source illumination range of the light source module (62) is suitable to overlap with the shooting range of the camera module (61).

7. A foreign fiber removal device for cotton web according to any one of claims 1-3, characterized in that: The spray valve assembly (7) includes a nozzle plate (71), an air pipe (72), and a solenoid valve (73). The nozzle plate (71) and the solenoid valve (73) are both fixed above the feeding conveyor belt (4). The nozzle plate (71) has a nozzle hole (711) and an air inlet (712). The solenoid valve (73) is connected to the air inlet end of the air pipe (72). The air outlet end of the air pipe (72) is connected to the inlet of the air inlet (712). The outlet of the air inlet (712) is connected to the inlet of the nozzle hole (711). The outlet of the nozzle hole (711) is arranged facing the feed inlet of the impurity collection channel (8).

8. The foreign fiber removal device for cotton web according to claim 7, characterized in that: The nozzle holes (711) and air inlets (712) are evenly arranged in multiples along the length of the nozzle plate (71), and the multiple nozzle holes (711) and multiple air inlets (712) correspond one-to-one.

9. A foreign fiber removal device for cotton web according to claim 8, characterized in that: The solenoid valve (73) is provided with multiple solenoid valves along the bandwidth direction of the feeding conveyor belt (4). The multiple air inlets (712) are divided into multiple groups along the bandwidth direction of the feeding conveyor belt (4). Each group of air inlets (712) has no less than one air inlet. Each solenoid valve (73) is connected to a group of air inlets (712) through an air pipe (72) and controls the air passage of the group of air inlets (712) accordingly.

10. A foreign fiber removal device for cotton web according to any one of claims 1-3, characterized in that: The outlet of the impurity collection channel (8) is connected to a feeding pipe (9) and a feeding fan (10). The feeding fan (10) is fixedly installed on the frame (3). The feeding pipe (9) is located between the impurity collection channel (8) and the feeding fan (10). The negative pressure inlet of the feeding fan (10) is connected to the outlet of the impurity collection channel (8) through the feeding pipe (9), and the positive pressure outlet of the feeding fan (10) is arranged downwards.

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