Cotton collecting equipment for preparing carbon fiber felt

Abstract

The invention discloses cotton collecting equipment for carbon fiber felt preparation, and relates to the technical field of carbon fiber felt processing. The conveying mechanism is arranged on the inner side of the supporting frame and used for conveying subdivided carbon fiber cotton; the discharging mechanism is arranged at the starting end of the conveying mechanism and used for separating cotton and storing the carbon fiber cotton; the negative pressure adsorption mechanism is arranged on the inner side of the conveying mechanism and used for generating adsorption wind power; the cotton blowing mechanism is arranged above the conveying mechanism and used for blowing away redundant carbon fiber cotton, and the rolling mechanism is arranged above the tail end of the conveying mechanism and used for compacting the carbon fiber cotton. When the carbon fiber felt is prepared, the carbon fiber cotton before discharging can be subdivided, the phenomenon that a cotton outlet is blocked by a carbon fiber cotton ball during discharging is avoided, and the carbon fiber felt is prevented from being damaged; the quality of the compacted carbon fiber cotton is ensured, and meanwhile, the uniformity of the carbon fiber cotton before rolling is ensured.

Description

Technical Field

[0001] This invention relates to the field of carbon fiber felt processing technology, specifically to a cotton collection device for preparing carbon fiber felt. Background Technology

[0002] Carbon fiber felt is a non-woven fabric material made of carbon fiber cotton. It has excellent mechanical properties and high temperature resistance and is widely used in aerospace, automobile manufacturing, sporting goods and other fields. In the preparation of carbon fiber felt, a cotton collecting machine is often used. The cotton collecting machine spreads the carbon fiber cotton raw material on the mesh of the conveying mechanism to form the initial cotton felt. It is then conveyed to the pressure roller to be compacted to form the desired carbon fiber felt.

[0003] For example, the drum-type cotton collector for rock wool processing, disclosed in CN222715558U, includes a cotton collecting frame. Inside the frame is a drum-type cotton collector, and inside the collector are two sets of negative pressure fans. A discharge port is fixedly connected to the bottom of one side of the frame, and an inlet is located at the top of the frame. An outlet is located on the other side of the collector, and a conveyor is installed inside the outlet. Scraper plates are installed at both ends of the conveyor, and a first pressure roller is installed at the top of the collector. This drum-type cotton collector for rock wool processing uses a cleaning plate and cleaning brush on the outside of the collector to scrape off fine cotton fibers from its surface. The cotton falls into a collection net inside the collection box. Periodically removing the collection net allows for the recycling and reprocessing of the cotton. This structure facilitates cleaning and solves the problems of difficult cleaning and collection.

[0004] While the existing technology has solved the problem of difficulty in cleaning and collection, carbon fiber clumps may still exist in the material pile before the carbon fiber cotton is fed. On the one hand, the carbon fiber clumps are prone to clogging the feeding port during feeding. On the other hand, after the carbon fiber clumps are compacted by the pressure rollers, the compacted area of ​​the clumps, although visually uniform in flatness compared to other areas, contains more cotton, resulting in a denser compacted area and inconsistent quality of the prepared carbon fiber felt.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing cotton collection equipment. Summary of the Invention

[0006] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide a cotton collection device for the preparation of carbon fiber felt, thereby solving the problems mentioned in the background art, such as the inconvenience of unloading cotton clumps in carbon fiber felt and the inconsistent quality after compaction of areas with cotton clumps.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a cotton collection device for carbon fiber felt preparation, comprising a support frame, a transmission mechanism disposed inside the support frame for conveying subdivided carbon fiber cotton, a feeding mechanism disposed at the beginning of the transmission mechanism for separating and storing carbon fiber cotton, a negative pressure adsorption mechanism disposed inside the transmission mechanism for generating adsorption wind, a cotton blowing mechanism disposed above the transmission mechanism for blowing away excess carbon fiber cotton, and a roller pressing mechanism disposed above the end of the transmission mechanism for compacting carbon fiber cotton. The transmission mechanism is provided with filter holes that cooperate with the negative pressure adsorption mechanism, and the middle part of the transmission mechanism is inclined.

[0008] Preferably, the feeding mechanism includes a first material cylinder fixed inside the support frame and located above the transmission mechanism, a second material cylinder fixedly disposed on the top of the first material cylinder, through slots equally spaced at the bottom of the second material cylinder, a drive motor installed on the outer wall of the first material cylinder, a rotating shaft rotatably connected to the output end of the drive motor, cotton separating components disposed at equal angles on the outer wall of the rotating shaft, and a magnetic plate fixedly disposed on the inner wall of the first material cylinder.

[0009] Preferably, the bottom of the first material cylinder is provided with a cotton outlet, and the top of the second material cylinder is provided with an opening.

[0010] Preferably, the cotton separating components are evenly spaced on the outer wall of the rotating shaft, and the evenly spaced cotton separating components correspond to the evenly spaced through slots, and the through slots are located within the rotation trajectory of the cotton separating components.

[0011] Preferably, the cotton separating component includes a groove formed on the outer wall of the rotating shaft, a fixing rod fixed to the inner wall of the groove, two sets of sliders symmetrically arranged on the outer wall of the fixing rod and slidingly engaged therewith, a first spring located outside the fixing rod connecting the two sets of sliders, and cotton separating rods extending into corresponding through grooves fixed to the outer walls of the two sets of sliders, and an auxiliary drive structure for secondary cotton separating is provided on the inner side of the groove.

[0012] Preferably, one end of each of the two sets of cotton-dividing rods located inside the corresponding through groove is configured as a hook-shaped structure, and the upper ends of the two sets of cotton-dividing rods are attached together, while the other ends of the two sets of cotton-dividing rods are inclined relative to each other.

[0013] Preferably, the auxiliary drive structure includes symmetrically fixed limiting posts inside the groove, with limiting blocks fixed to the top of each limiting post, and a magnetic disk that slides with the outer wall of each limiting post. The magnetic disk is located at the lower end of the inclined section between the two cotton rods, and a second spring located outside the limiting post is fixed between the inner wall of the groove and the magnetic disk.

[0014] Preferably, the negative pressure adsorption mechanism includes an air suction hood disposed inside the transmission mechanism, and a negative pressure fan is installed on the outer wall of the support frame. The negative pressure suction end of the negative pressure fan is connected to the air suction hood through a pipeline.

[0015] Preferably, the cotton blowing mechanism includes an air outlet trough fixed between the support frames and located above the inclined part of the transmission mechanism. A blower is installed on the outer wall of the support frame, and the air outlet end of the blower is connected to the top of the air outlet trough through a pipeline.

[0016] Preferably, the roller pressing mechanism includes a fixed plate fixed between the support frames and located above the end of the transmission mechanism, with an electric telescopic rod installed at the bottom of the fixed plate, and a pressing roller fixed to the telescopic end of the electric telescopic rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention includes a feeding mechanism that drives the cotton-separating rods to rotate. When the cotton-separating rods rotate into the through groove, the ends of the two cotton-separating rods in each feeding mechanism are hook-shaped. Within the area rotated into the through groove, the carbon fiber cotton in the second material cylinder can be carried out of the through groove. If there are cotton clumps in the carbon fiber cotton, the hook-shaped ends of the two cotton-separating rods can hook the cotton clumps apart and carry out a portion of the carbon fiber cotton. The cotton-separating rods, which are evenly spaced and at equal angles, can also carry out the unclumped carbon fiber cotton in the second material cylinder out of the through groove. This process further subdivides the carbon fiber cotton before feeding, preventing the carbon fiber cotton clumps from blocking the cotton outlet during feeding and ensuring the quality of the compacted carbon fiber cotton. This invention includes a feeding mechanism. When the cotton separating rod rotates into the magnetic field of the magnetic plate, the magnetic plate attracts the magnetic disk. The magnetic disk slides on the limiting post and pulls the second spring. The magnetic disk eventually slides to the bottom of the limiting block and is limited. Since the lower ends of the two cotton separating rods in each feeding mechanism are relatively inclined, the magnetic disk will push the two cotton separating rods to separate when it moves upward. The cotton separating rod will drive the two sets of sliders at the bottom to slide away from each other on the outer wall of the fixed rod. The two sets of sliders will pull the first spring. During the separation process, if the hook-shaped upper ends of the two cotton separating rods still bring out small cotton balls from the through groove, the small cotton balls can be separated a second time when the two cotton separating rods separate. At the same time, when the two cotton separating rods separate and rotate, it is beneficial for the carbon fiber cotton to fall off.

[0018] This invention incorporates a negative pressure adsorption mechanism and a cotton blowing mechanism. Under the action of the filter holes on the conveyor belt, the carbon fiber cotton is adsorbed onto the surface of the conveyor belt by suction, forming a carbon fiber cotton layer. After being conveyed to the inclined middle section of the conveyor belt, the carbon fiber cotton will not fall off under the action of suction. Since the carbon fiber cotton layer will block the filter holes and the carbon fiber cotton is relatively light, the excess part on the carbon fiber cotton layer is subjected to less suction. Therefore, the wind force generated by the air outlet can blow the excess carbon fiber cotton on the carbon fiber cotton layer towards the cotton outlet, thereby ensuring the uniformity of the carbon fiber cotton before rolling. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a sectional perspective view of the feeding mechanism of the present invention; Figure 3 This is a first-view sectional plan view of the feeding mechanism of the present invention; Figure 4 This is a second-view sectional plan view of the feeding mechanism of the present invention; Figure 5 For the present invention Figure 2 Enlarged view of point A in the image; Figure 6 This is a perspective view of the transmission mechanism of the present invention; Figure 7 This is a perspective view of the negative pressure adsorption mechanism of the present invention.

[0020] In the diagram: 1. Support frame; 2. Transmission mechanism; 3. First material cylinder; 4. Second material cylinder; 5. Through groove; 6. Drive motor; 7. Rotating shaft; 8. Groove; 9. Fixing rod; 10. Slider; 11. First spring; 12. Cotton separating rod; 13. Limiting post; 14. Limiting block; 15. Magnetic disk; 16. Second spring; 17. Magnetic plate; 18. Suction hood; 19. Negative pressure fan; 20. Air outlet groove; 21. Blower; 22. Fixing plate; 23. Electric telescopic rod; 24. Cotton pressing roller. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1 to 7 The present invention provides a technical solution: a cotton collection device for preparing carbon fiber felt, including a support frame 1, a transmission mechanism 2 disposed inside the support frame 1 for conveying the subdivided carbon fiber cotton, a feeding mechanism disposed at the starting end of the transmission mechanism 2 for separating and storing the carbon fiber cotton, a negative pressure adsorption mechanism disposed inside the transmission mechanism 2 for generating adsorption wind, a cotton blowing mechanism disposed above the transmission mechanism 2 for blowing away excess carbon fiber cotton, and a roller pressing mechanism disposed above the end of the transmission mechanism 2 for compacting the carbon fiber cotton. The transmission mechanism 2 is provided with filter holes that cooperate with the negative pressure adsorption mechanism, and the middle part of the transmission mechanism 2 is inclined.

[0023] It should be noted that the transmission mechanism 2 is a conventional existing technology, except that a transmission belt with filter holes has been selected, and the transmission path is as follows: Figure 1 As shown, the feeding mechanism separates any carbon fiber fibers that may be present in the carbon fiber cotton and lays them evenly on the conveyor belt after feeding. The negative pressure adsorption mechanism ensures that the carbon fiber cotton is stably transported on the conveyor belt. The blowing mechanism blows away any excess carbon fiber fibers on the carbon fiber cotton layer, ensuring that the thickness of the formed carbon fiber cotton layer is uniform. The rolling mechanism rolls the laid carbon fiber cotton layer into carbon fiber felt.

[0024] The feeding mechanism includes a first material cylinder 3 fixed inside the support frame 1 and located above the transmission mechanism 2. A second material cylinder 4 is fixedly installed on the top of the first material cylinder 3. Through slots 5 are opened at equal intervals at the bottom of the second material cylinder 4. A drive motor 6 is installed on the outer wall of the first material cylinder 3. A rotating shaft 7 that is rotatably connected to the first material cylinder 3 is fixed at the output end of the drive motor 6. Cotton separating components are arranged at equal angles on the outer wall of the rotating shaft 7. A magnetic plate 17 is fixedly installed on the inner wall of the first material cylinder 3.

[0025] It should be noted that the carbon fiber cotton needs to be added into the second material cylinder 4 through the opening at the top of the second material cylinder 4. After the drive motor 6 is started, the rotating shaft 7 drives the cotton separating component to rotate. When the cotton separating component rotates into the through groove 5, it can separate the cotton clumps in the carbon fiber cotton. The separated carbon fiber cotton falls into the first material cylinder 3.

[0026] The bottom of the first feed cylinder 3 is provided with a cotton outlet, and the top of the second feed cylinder 4 is provided with an opening.

[0027] It should be noted that the size of the cotton outlet is matched with the width of the conveyor belt, so that the carbon fiber cotton can be laid on the conveyor belt when the cotton is discharged from the outlet of the first material cylinder 3.

[0028] The cotton separating components are evenly spaced on the outer wall of the rotating shaft 7, and the evenly spaced cotton separating components correspond to the evenly spaced through grooves 5, and the through grooves 5 are located within the rotation trajectory of the cotton separating components.

[0029] It should be noted that by using cotton-separating components with equal spacing and angles corresponding to the through groove 5, the carbon fiber cotton brought out can be evenly piled up at the lower end of the first material cylinder 3.

[0030] The cotton separating component includes a groove 8 formed on the outer wall of the rotating shaft 7. A fixing rod 9 is fixed to the inner wall of the groove 8. Two sets of sliders 10 are symmetrically arranged on the outer wall of the fixing rod 9 and slide with it. A first spring 11 located outside the fixing rod 9 is connected between the two sets of sliders 10. Cotton separating rods 12 extending into the corresponding through grooves 5 are fixed to the outer walls of the two sets of sliders 10. An auxiliary drive structure for secondary cotton separating is provided on the inner side of the groove 8.

[0031] The two cotton rods 12 are configured with a hook-shaped structure at one end inside the corresponding through groove 5, and the upper ends of the two cotton rods 12 are attached together, while the other ends of the two cotton rods 12 are inclined relative to each other.

[0032] It should be noted that when the cotton separating component rotates into the magnetic attraction range of the magnetic plate 17, the auxiliary drive mechanism is used to separate the cotton separating rod 12 after it rotates out of the through groove 5 by the attraction of the magnetic plate 17. The cotton separating rod 12 then drives the two sets of sliders 10 at the bottom to slide away from each other on the outer wall of the fixed rod 9. The two sets of sliders 10 pull the first spring 11. During the separation process of the two sets of cotton separating rods 12, if the hook-shaped upper ends of the two sets of cotton separating rods 12 still bring out small cotton balls from the through groove 5, the small cotton balls can be separated a second time when the two sets of cotton separating rods 12 separate. At the same time, when the two sets of cotton separating rods 12 separate and rotate, it is beneficial for the carbon fiber cotton brought out to fall off, until the magnetic disk 15 rotates out of the magnetic force range of the magnetic plate 17.

[0033] The auxiliary drive structure includes symmetrically fixed limiting posts 13 inside the groove 8. Limiting blocks 14 are fixed to the top of the limiting posts 13 respectively. A magnetic disk 15 is provided on the outer wall of the limiting posts 13 and slides therewith. The magnetic disk 15 is located at the lower end of the inclined section between the two cotton rods 12. A second spring 16 located outside the limiting posts 13 is fixed between the inner wall of the groove 8 and the magnetic disk 15.

[0034] It should be noted that when the cotton separating rod 12 rotates into the magnetic range of the magnetic plate 17, the magnetic plate 17 will attract the magnetic disk 15, which will slide on the limiting post 13 and pull the second spring 16. The magnetic disk 15 will eventually slide to the bottom of the limiting block 14 and be limited. Since the lower ends of the two cotton separating rods 12 in each feeding mechanism are relatively inclined, the magnetic disk 15 will push the two cotton separating rods 12 to separate when it moves upward. The magnetic force of the magnetic plate 17 is greater than the elastic force of the first spring 11 and the second spring 16.

[0035] The negative pressure adsorption mechanism includes an air suction hood 18 disposed inside the transmission mechanism 2, and a negative pressure fan 19 installed on the outer wall of the support frame 1. The negative pressure suction end of the negative pressure fan 19 is connected to the air suction hood 18 through a pipeline.

[0036] It should be noted that the negative pressure fan 19 generates suction through the pipes to the suction hood 18. The opening of the suction hood 18 is matched with the size of the conveyor belt, so that when it generates suction, it can pass through the filter holes on the conveyor belt in the area of ​​the suction hood 18, thereby adsorbing the carbon fiber cotton.

[0037] The cotton blowing mechanism includes an air outlet 20 fixed between the support frames 1 and located above the inclined part of the transmission mechanism 2. A blower 21 is installed on the outer wall of the support frame 1, and the air outlet end of the blower 21 is connected to the top of the air outlet 20 through a pipeline.

[0038] It should be noted that the blower 21 blows air from the air outlet 20 toward the conveyor belt through the pipeline. The air force of the blower 21 is adjusted to be relatively small, so that the excess part on the carbon fiber cotton layer is subjected to less suction. Then the air force generated by the air outlet 20 can blow the excess carbon fiber cotton on the carbon fiber cotton layer toward the cotton outlet.

[0039] The roller pressing mechanism includes a fixed plate 22 fixed between the support frames 1 and located above the end of the transmission mechanism 2. An electric telescopic rod 23 is installed at the bottom of the fixed plate 22, and a cotton pressing roller 24 is fixed at the telescopic end of the electric telescopic rod 23.

[0040] It should be noted that the carbon fiber felt is formed by pressing the cotton layer with the cotton pressing roller 24. The thickness of the carbon fiber cotton layer can be adjusted by the electric telescopic rod 23 to press the carbon fiber cotton layer.

[0041] Working principle: First, carbon fiber cotton needs to be added into the second material cylinder 4 through the opening at the top of the second material cylinder 4. The cotton outlet at the bottom of the first material cylinder 3 is blocked by the baffle plate. The drive motor 6 is started to rotate. The drive motor 6 drives the rotating shaft 7 to rotate. The rotating shaft 7 drives the cotton separating rod 12 to rotate. When the cotton separating rod 12 rotates into the through groove 5, since the ends of the two cotton separating rods 12 in each set of feeding mechanism are hook-shaped, the carbon fiber cotton in the second material cylinder 4 can be carried out of the through groove 5 within the area where it rotates into the through groove 5. If there are cotton clumps in the carbon fiber cotton, the cotton clumps can be hooked apart by the hook-shaped ends of the two cotton separating rods 12 and a part of the carbon fiber cotton can be carried out. The cotton separating rods 12, which are evenly spaced and at equal angles, can also carry out the unclumped carbon fiber cotton in the second material cylinder 4 out of the through groove 5. Then, when the cotton separating rod 12 rotates into the magnetic range of the magnetic plate 17, the magnetic plate 17 attracts the magnetic disk 15. The magnetic disk 15 slides on the limiting post 13 and pulls the second spring 16. The magnetic disk 15 eventually slides to the bottom of the limiting block 14 and is limited. Since the lower ends of the two cotton separating rods 12 in each feeding mechanism are relatively inclined, when the magnetic disk 15 moves upward, it will push the two cotton separating rods 12 to separate. The cotton separating rod 12 will then drive the two sets of sliders 10 at the bottom to slide away from each other on the outer wall of the fixed rod 9. The two sets of sliders 10 pull the first spring 11, and the two sets of cotton separating rods... 12 During the separation process, if the hook-shaped upper ends of the two groups of cotton rods 12 still bring out small cotton balls from the through groove 5, the small cotton balls can be separated a second time when the two groups of cotton rods 12 separate. At the same time, when the two groups of cotton rods 12 separate and rotate, it is beneficial for the carbon fiber cotton to fall off. Until the magnetic disk 15 rotates out of the magnetic force range of the magnetic plate 17, the magnetic disk 15 slides back to its original position under the action of the first spring 11 and the second spring 16. The separated two groups of cotton rods 12 also reset synchronously. Finally, the carbon fiber cotton that is brought out and separated falls into the cotton outlet of the first material cylinder 3 and accumulates.

[0042] Finally, the power equipment on the transmission mechanism 2 is started to drive the transmission belt, and the negative pressure fan 19 and blower 21 are started. At the same time, the baffle plate at the cotton outlet at the bottom of the first material cylinder 3 is removed. The negative pressure fan 19 generates suction through the suction hood 18 via the pipeline, and the blower 21 blows air from the air outlet 20 toward the transmission belt via the pipeline. The air force of the blower 21 is adjusted to be relatively low. When cotton is discharged from the cotton outlet of the first material cylinder 3, the suction of the suction hood 18 makes it easier for the carbon fiber cotton to fall from the cotton outlet. Under the action of the filter holes on the transmission belt, the carbon fiber cotton is attracted to the surface of the transmission belt to form a carbon fiber cotton layer. It is tilted in the middle of the transmission belt. After treatment, the carbon fiber cotton will not fall off under the action of suction. Since the carbon fiber cotton layer will block the filter pores and the carbon fiber cotton is relatively light, the excess part on the carbon fiber cotton layer is subject to less suction. Therefore, the wind generated by the air outlet 20 can blow the excess carbon fiber cotton on the carbon fiber cotton layer toward the cotton outlet. Finally, the carbon fiber cotton layer that is evenly spread on the conveyor belt is transported to the end of the conveyor mechanism 2 and is rolled by the cotton pressing roller 24 to form carbon fiber felt. The thickness of the carbon fiber cotton layer can be adjusted by the electric telescopic rod 23 to roll the carbon fiber cotton layer. The thickness of the carbon fiber cotton layer can be adjusted according to the suction force generated by the negative pressure fan 19.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cotton collection device for preparing carbon fiber felt, comprising a support frame (1), characterized in that: It also includes a conveying mechanism (2) set inside the support frame (1) for conveying the subdivided carbon fiber cotton, a feeding mechanism set at the beginning of the conveying mechanism (2) for separating and storing the carbon fiber cotton, a negative pressure adsorption mechanism set inside the conveying mechanism (2) for generating adsorption wind, a cotton blowing mechanism set above the conveying mechanism (2) for blowing away excess carbon fiber cotton, and a roller pressing mechanism set above the end of the conveying mechanism (2) for compacting the carbon fiber cotton. The transmission mechanism (2) is provided with filter holes that cooperate with the negative pressure adsorption mechanism, and the middle part of the transmission mechanism (2) is inclined.

2. The cotton collection device for preparing carbon fiber felt according to claim 1, characterized in that: The feeding mechanism includes a first material cylinder (3) fixed inside the support frame (1) and located above the transmission mechanism (2). A second material cylinder (4) is fixedly installed on the top of the first material cylinder (3). Through slots (5) are opened at equal intervals at the bottom of the second material cylinder (4). A drive motor (6) is installed on the outer wall of the first material cylinder (3). A rotating shaft (7) is fixedly connected to the first material cylinder (3) at the output end of the drive motor (6). A cotton separating component is provided at equal angles on the outer wall of the rotating shaft (7). A magnetic plate (17) is fixedly installed on the inner wall of the first material cylinder (3).

3. The cotton collection device for preparing carbon fiber felt according to claim 2, characterized in that: The bottom of the first material cylinder (3) is provided with a cotton outlet, and the top of the second material cylinder (4) is provided with an opening.

4. The cotton collection device for preparing carbon fiber felt according to claim 2, characterized in that: The cotton separating components are evenly spaced on the outer wall of the rotating shaft (7), and the evenly spaced cotton separating components correspond to the evenly spaced through grooves (5), and the through grooves (5) are located within the rotation trajectory of the cotton separating components.

5. The cotton collection device for preparing carbon fiber felt according to claim 2, characterized in that: The cotton separating component includes a groove (8) formed on the outer wall of the rotating shaft (7). A fixing rod (9) is fixed on the inner wall of the groove (8). Two sets of sliders (10) are symmetrically arranged on the outer wall of the fixing rod (9) and slide with it. A first spring (11) located outside the fixing rod (9) is connected between the two sets of sliders (10). Cotton separating rods (12) extending into the corresponding through grooves (5) are fixed on the outer walls of the two sets of sliders (10). An auxiliary drive structure for secondary cotton separating is provided on the inner side of the groove (8).

6. The cotton collection device for preparing carbon fiber felt according to claim 5, characterized in that: The two sets of cotton-separating rods (12) are configured with a hook-shaped structure at one end inside the corresponding through groove (5), and the upper ends of the two sets of cotton-separating rods (12) are attached together, and the other ends of the two sets of cotton-separating rods (12) are inclined relative to each other.

7. The cotton collection device for preparing carbon fiber felt according to claim 5, characterized in that: The auxiliary drive structure includes a limiting post (13) symmetrically fixed inside the groove (8). A limiting block (14) is fixed to the top of the limiting post (13). A magnetic disk (15) is provided on the outer wall of the limiting post (13) and slides therewith. The magnetic disk (15) is located at the lower end of the inclined section between the two cotton rods (12). A second spring (16) located outside the limiting post (13) is fixed between the inner wall of the groove (8) and the magnetic disk (15).

8. The cotton collection device for preparing carbon fiber felt according to claim 1, characterized in that: The negative pressure adsorption mechanism includes an air suction hood (18) disposed inside the transmission mechanism (2), and a negative pressure fan (19) is installed on the outer wall of the support frame (1). The negative pressure suction end of the negative pressure fan (19) is connected to the air suction hood (18) through a pipeline.

9. The cotton collection device for preparing carbon fiber felt according to claim 1, characterized in that: The cotton blowing mechanism includes an air outlet groove (20) fixed between the support frames (1) and located above the inclined part of the transmission mechanism (2). A blower (21) is installed on the outer wall of the support frame (1). The air outlet end of the blower (21) is connected to the top of the air outlet groove (20) through a pipeline.

10. The cotton collection device for preparing carbon fiber felt according to claim 1, characterized in that: The roller pressing mechanism includes a fixed plate (22) fixed between the support frames (1) and located above the end of the transmission mechanism (2). An electric telescopic rod (23) is installed at the bottom of the fixed plate (22), and a cotton pressing roller (24) is fixed at the telescopic end of the electric telescopic rod (23).

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