Fiber feeding device suitable for high-yield fine cotton slitter
By designing a chamfer structure at the bottom outlet of the fiber feeding device of the fine cotton machine, the problems of poor fiber flow and flower accumulation and jamming are solved, and the continuous and smooth feeding of fibers is achieved, and the production efficiency and equipment reliability are improved.
Patent Information
- Application Number
- CN202422334617.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-25
AI Technical Summary
In the fiber feeding device of the traditional fine cotton machine, the fiber flow is not smooth, and it is easy to accumulate flowers or get stuck in the cotton peeling board, resulting in equipment damage and reduced production efficiency.
A fiber feeding device is designed. By designing a chamfered structure at the lower outlet of the loose cotton duct, the fiber flow breaks away from the disengagement point of the angle nail duct is advanced, and the direction of the centrifugal force is changed, so that the fiber flow breaks away from the angle nail duct quickly and effectively, and smoothly transfers into the lower cotton duct.
It significantly improves the smoothness of fiber flow, solves the phenomenon of flower accumulation and cotton stuck at the cotton peeling board, improves the feeding efficiency of fibers, reduces equipment damage and faulty parking, and improves the production line production capacity and finished product quality.
Smart Images
Figure CN222961640U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of non-woven fabric equipment, and particularly relates to a fiber feeding device suitable for a high-yield precision opener. Background Art
[0002] The fiber feeding device of the precision opener feeds fibers by using a pair of rollers with opposite rotation directions. The angle needle beater gently loosens the fibers with the assistance of a guard plate to realize continuous feeding of small pieces of fibers into the precision opener. In the traditional fiber feeding device of the precision opener, since the separation point of the fibers from the angle needle beater is higher than the lowest tangent point of the beater, the theoretical route of the fiber flow under the action of centrifugal force is Figure 1 Route Ⅰ in [], and it slopes upward after the fibers separate from the angle needle beater. However, in the actual production process, due to the combined action of gravity, centrifugal force, baffle, and factors such as frictional static electricity, the actual route of the fiber flow is divided into three parts, as shown in Figure 2 Routes Ⅰ’, Ⅱ’, and Ⅲ’ in []. Among them, some fibers in Route Ⅲ’ cannot separate from the angle needle beater in time due to static electricity and other reasons, which will cause reverse flower, or form accumulated flowers or even cotton jams between the angle needle beater and the stripping plate. Especially in recent years, as the non-woven fabric industry has higher and higher requirements for the quality and output of non-woven fabric products, when the fiber feeding device is configured with a high-yield precision opener, cotton jams often occur frequently at the stripping plate, which will cause damage to the angle needle beater, stripping plate, and transmission parts to a certain extent. At the same time, it also seriously affects the efficiency of the entire production line and the quality of the finished products. Summary of the Invention
[0003] The purpose of the utility model is precisely to provide a fiber feeding device suitable for a high-yield precision opener aiming at the deficiencies existing in the above-mentioned prior art. The utility model can not only gently loosen the fibers, but also change the direction of the centrifugal force by advancing the separation point of the loosened fiber flow from the angle nail beater, so as to prompt the fiber flow to quickly and effectively separate from the angle nail beater, ensure that the loosened fiber flow smoothly transfers to the lower cotton channel, significantly improves the smoothness of the fiber flow, and completely solves the problems of accumulated flowers and cotton jams at the stripping plate, ensures that small pieces of fibers can be continuously and smoothly fed into the precision opener, improves the fiber feeding efficiency, reduces the damage to the stripping plate and transmission components, reduces the equipment failure shutdown, improves the reliability of the equipment, enhances the production capacity of the entire production line, and also ensures the quality of the finished products.
[0004] The purpose of the utility model can be achieved by the following technical measures:
[0005] A fiber feeding device applicable to a high-yield precision opener of the present utility model includes an integral truss-type frame composed of a front wallboard, a rear wallboard, and upper left braces, upper right braces, lower left braces, and lower right braces at four corners (the integral frame provides an installation foundation, installation space, and stiffness support for other components of the present utility model). The front roller, rear roller, and spike beater are arranged in an inverted triangle in the upper middle part of the inner cavity of the integral frame, and the two ends are respectively combined with the front wallboard and rear wallboard through bearings, bearing seats, and bearing seat plates (the opposite rotation of the front roller and the rear roller can feed the fibers temporarily stored in the temporary cotton storage area into the loosening cotton channel; the rotation of the spike beater can gently loosen the fibers; the front wallboard, rear wallboard, bearing seat plate, and bearing seat provide support for the front roller, rear roller, and spike beater, and ensure that the front roller, rear roller, and spike beater can rotate smoothly under the drive of external power). Above the front roller and the rear roller is a temporary cotton storage area enclosed by an upper guard plate, an upper baffle, a left guard wood, and a right guard wood, in a funnel shape (the temporary cotton storage area is used to temporarily store the fibers to be loosened; the left guard wood and the right guard wood can prevent the fibers from entering the gaps between the two ends of the front roller and the rear roller and the front wallboard and the rear wallboard, and can effectively avoid the occurrence of lint accumulation and cotton jamming at these gaps). Below the front roller is a loosening cotton channel enclosed by an upper middle guard plate and a lower guard plate spliced up and down with the spike beater, the front wallboard, and the rear wallboard, in a semi-circular cylindrical cavity structure (as the front roller and the rear roller rotate in opposite directions, they carry the fibers to be loosened in the temporary cotton storage area downward and feed them into the loosening cotton channel; as the spike beater rotates rapidly and assisted by the upper middle guard plate, the spikes on the spike beater gently loosen the fibers fed into the loosening cotton channel, and at the same time, the spikes also push the fibers to rotate downward until they are pushed out of the loosening cotton channel, so that the loosened fibers continuously fall into the lower cotton channel to form a uniform and stable fiber flow). At the lower outlet end of the loosening cotton channel, there is a lower cotton channel enclosed by a lower left baffle, a lower right baffle, a stripping plate connected to the upper part of the lower right baffle, a lower right brace connected to the lower part of the lower right baffle, the front wallboard, and the rear wallboard, with an open bottom (to output the uniform and stable fiber flow after loosening to the high-yield precision opener); the rotation directions of the front roller and the rear roller are opposite rotations that carry the material downward (able to carry the fibers to be loosened in the temporary cotton storage area downward and feed them into the loosening cotton channel), and the first half of the spike beater is always in a downward rotation state during the rotation process (ensuring that the fiber cotton in the loosening cotton channel is loosened and pushed downward while the spike beater rotates).The joint part of the lower guard plate and the lower left baffle plate located at the intersection of the opening cotton channel and the lower cotton channel is designed with a chamfer structure, and the upper starting point of the chamfer is in front of the vertical longitudinal middle section of the spike beater (such a chamfer design can advance the separation point of the fiber flow after opening from the spike beater, so as to change the direction of the centrifugal force, promote the fiber flow to effectively separate from the spike beater quickly, ensure that the fiber flow after opening smoothly transfers to the lower cotton channel, significantly improves the smoothness of fiber flow, and completely solves the problems of cotton accumulation and cotton jamming at the stripping plate, ensures that small pieces of fiber can be continuously and smoothly fed into the fine opening cotton machine, improves the feeding efficiency of the fiber, reduces the damage to the stripping plate and transmission components, reduces the equipment failure shutdown, improves the reliability of the equipment, increases the production capacity of the whole production line, and also ensures the finished product quality).;
[0006] In the present utility model, the upper guard plate, the middle guard plate, the lower guard plate, and the lower left baffle plate are sequentially spliced up and down to form a front guard plate assembly (the temporary cotton storage area, the opening cotton channel, and the lower cotton channel are vertically connected to form the overall fiber flow channel of the present utility model, and the front guard plate assembly is the front guard baffle of the overall fiber flow channel); the bottom of the upper guard plate and the upper part of the middle guard plate are designed as arc segments similar to the outer shape of the front roller; the middle upper part of the middle guard plate and the lower guard plate are designed as arc segments similar to the outer shape of the spike beater; the bottom end of the lower guard plate and the top of the lower left baffle plate are designed as an integral chamfered inclined plane (the integral chamfered inclined plane ensures that the fiber flow passes quickly and smoothly, avoiding cotton jamming and cotton hanging), and the intersecting edge of the chamfered inclined plane and the lower guard plate is in front of the vertical longitudinal middle section of the spike beater (ensuring that the separation point of the fiber flow from the spike beater is advanced, which can change the direction of the centrifugal force in this way, promote the fiber flow to effectively separate from the spike beater quickly, ensure that the fiber flow after opening smoothly transfers to the lower cotton channel, significantly improves the smoothness of fiber flow, and completely solves the problems of cotton accumulation and cotton jamming at the stripping plate, ensures that small pieces of fiber can be continuously and smoothly fed into the fine opening cotton machine, improves the feeding efficiency of the fiber, reduces the damage to the stripping plate and transmission components, reduces the equipment failure shutdown, improves the reliability of the equipment, increases the production capacity of the whole production line, and also ensures the finished product quality).
[0007] In the present utility model, the upper baffle plate, the stripping plate, the lower right baffle plate, and the lower right support baffle are sequentially spliced up and down to form a rear guard plate assembly (the temporary cotton storage area, the opening cotton channel, and the lower cotton channel are vertically connected to form the overall fiber flow channel of the present utility model, and the rear guard plate assembly is the rear guard baffle of the overall fiber flow channel); the middle part of the upper baffle plate is designed as an arc segment similar to the outer shape of the rear roller; the stripping plate is a corner plate formed by bending a straight panel 90 degrees in the middle, and the corner is rounded, and the front end of the top of the spliced stripping plate extends forward from the junction with the upper baffle plate until it reaches 3 - 10 mm away from the movement track of the spikes in the spike beater (the extended section can effectively block back and strip the fibers that turn up with the rotation of the spikes, avoiding reverse flower).
[0008] The working principle of the present utility model is as follows:
[0009] The present utility model is designed with an integral fiber feeding channel that is vertically connected and composed of a temporary cotton storage area, an opening cotton channel, and a lower cotton channel; at the junction of the temporary cotton storage area and the opening cotton channel, the present utility model is designed with a pair of front rollers and rear rollers with opposite rotation directions. In this way, as the front rollers and rear rollers rotate towards each other, the to-be-opened fibers in the temporary cotton storage area are wrapped and moved downward into the opening cotton channel; directly below the midpoint between the front rollers and the rear rollers, the present utility model is designed with a spike beater, which can gently open the fibers fed into the opening cotton channel; the present utility model also designs the joint part between the lower guard plate and the lower left baffle at the junction of the opening cotton channel and the lower cotton channel as a chamfered structure, and the upper starting point of the chamfer is located in front of the vertical longitudinal middle section of the spike beater. In this way, the separation point of the opened fiber flow from the spike beater can be advanced, thereby changing the direction of the centrifugal force, promoting the fiber flow to quickly and effectively separate from the spike beater, ensuring that the opened fiber flow smoothly transfers into the lower cotton channel to form a uniform and stable fiber flow, significantly improving the smoothness of fiber flow, completely solving the problems of cotton accumulation and cotton jamming at the stripping board, ensuring that small pieces of fiber can be continuously and smoothly fed into the fine opening cotton machine, improving the fiber feeding efficiency, reducing the damage to the stripping board and transmission components, reducing the equipment failure shutdown, improving the reliability of the equipment, increasing the production capacity of the entire production line, and also ensuring the finished product quality.
[0010] The beneficial effects of the present utility model are as follows:
[0011] The present utility model can not only gently open the fibers, but also change the direction of the centrifugal force by advancing the separation point of the opened fiber flow from the spike beater, promoting the fiber flow to quickly and effectively separate from the spike beater, ensuring that the opened fiber flow smoothly transfers into the lower cotton channel, significantly improving the smoothness of fiber flow, completely solving the problems of cotton accumulation and cotton jamming at the stripping board, ensuring that small pieces of fiber can be continuously and smoothly fed into the fine opening cotton machine, improving the fiber feeding efficiency, reducing the damage to the stripping board and transmission components, reducing the equipment failure shutdown, improving the reliability of the equipment, increasing the production capacity of the entire production line, and also ensuring the finished product quality. Description of the Drawings
[0012] Figure 1 is a schematic structural diagram and a theoretical fiber flow diagram of the prior art.
[0013] Figure 2 is a schematic structural diagram and an actual fiber flow diagram of the prior art.
[0014] Figure 3 is a schematic structural diagram of the present utility model.
[0015] Figure 4It is a schematic diagram of the fiber flow of the present utility model.
[0016] Figure 5 is Figure 3 the C-C cross-sectional view in (i.e., the schematic diagram of the roller installation and the temporary cotton storage area).
[0017] Figure 6 is Figure 3 the D-D cross-sectional view in (i.e., the installation schematic diagram of the spike beater).
[0018] Figure 7 is Figure 3 the E-direction schematic view in (i.e., the front view of the overall frame).
[0019] Figure 8 is Figure 3 the F-direction schematic view in (i.e., the rear view of the overall frame).
[0020] Figure 9 It is an enlarged view of the chamfered part.
[0021] Explanation of the part numbers in the figure: 1. Upper left brace, 2. Upper guard plate, 3. Front roller, 4. Rear roller, 5. Upper baffle, 6. Upper right brace, 7. Doffer, 8. Lower right baffle, 9. Lower right brace, 10. Lower left brace, 11. Lower left baffle, 12. Lower guard plate, 13. Spike beater, 14. Middle guard plate, 15. Front wallboard, 16. Rear wallboard, 17. Bearing, 18. Bearing housing, 19. Bearing housing plate, 20. Left guard wood, 21. Right guard wood, J. Overall frame, L. Temporary cotton storage area, K. Opened cotton channel, X. Lower cotton channel. Specific embodiments
[0022] The present utility model will be further described below in conjunction with the accompanying drawings:
[0023] Such as Figures 1 to 9As shown in the figure, a fiber feeding device applicable to a high-yield precision bale opener of the present utility model includes an integral frame J in the form of a truss composed of a front wall panel 15, a rear wall panel 16, and upper left braces 1, upper right braces 6, lower left braces 10, and lower right braces 9 at four corners (the integral frame J provides an installation foundation, installation space, and stiffness support for other components of the present utility model). The front roller 3, rear roller 4, and spike beater 13 are arranged in an inverted triangle in the upper middle part of the inner cavity of the integral frame and are respectively combined with the front wall panel 15 and the rear wall panel 16 through bearings 17, bearing seats 18, and bearing seat plates 19. (The opposite rotation of the front roller 3 and the rear roller 4 can feed the fibers temporarily stored in the temporary cotton storage area L into the carding cotton channel K; the rotation of the spike beater 13 can gently loosen the fibers; the front wall panel 15, rear wall panel 16, bearing seat plate 19, and bearing seat 18 provide support for the front roller 3, rear roller 4, and spike beater 13, and ensure that the front roller 3, rear roller 4, and spike beater 13 can rotate smoothly under the drive of external power). Above the front roller 3 and the rear roller 4 is a temporary cotton storage area L enclosed by an upper guard plate 2, an upper baffle 5, a left guard wood 20, and a right guard wood 21, in the shape of a funnel (the temporary cotton storage area L is used to temporarily store the fibers to be loosened; the left guard wood 20 and the right guard wood 21 can prevent the fibers from entering the gaps between the two ends of the front roller 3 and the rear roller 4 and the front wall panel 15 and the rear wall panel 16, effectively avoiding the phenomenon of cotton accumulation and jamming in these gaps). Below the front roller 3 is a carding cotton channel K enclosed by an upper middle guard plate 14 and a lower guard plate 12 spliced up and down with the spike beater 13, the front wall panel 15, and the rear wall panel 16, in the shape of a semi-circular cylindrical cavity structure. (As the front roller 3 and the rear roller 4 rotate in opposite directions, they carry the fibers to be loosened in the temporary cotton storage area L downward and feed them into the carding cotton channel K; as the spike beater 13 rotates rapidly and with the assistance of the upper middle guard plate 14, the spikes on the spike beater 13 gently loosen the fibers fed into the carding cotton channel K, and at the same time, the spikes also push the fibers to rotate downward until they are pushed out of the carding cotton channel K, so that the loosened fibers continuously fall into the lower cotton channel X to form a uniform and stable fiber flow). At the lower outlet end of the carding cotton channel K, there is a lower cotton channel X jointly surrounded by a lower left baffle 11, a lower right baffle 8, a stripping board 7 connected to the upper part of the lower right baffle, a lower right brace 9 connected to the lower part of the lower right baffle, the front wall panel 15, and the rear wall panel 16, with an open bottom (outputting the uniformly stable fiber flow after loosening to the high-yield precision bale opener); the rotation directions of the front roller 3 and the rear roller 4 are opposite rotations that carry the material downward (able to carry the fibers to be loosened in the temporary cotton storage area L downward and feed them into the carding cotton channel K), and the first half of the spike beater 13 is always in a downward rotation state during the rotation process (ensuring that the fiber cotton in the carding cotton channel K is loosened and pushed downward as the spike beater 13 rotates).The joint part of the lower guard plate 12 and the lower left baffle 11 located at the intersection of the opening cotton channel K and the lower cotton channel X is designed with a chamfer structure, and the upper starting point of the chamfer is in front of the vertical longitudinal middle section of the spike beater 13. (Such a chamfer design can advance the separation point of the fiber flow after opening from the spike beater 13, thereby changing the direction of the centrifugal force, promoting the fiber flow to quickly and effectively separate from the spike beater, ensuring that the fiber flow after opening smoothly enters the lower cotton channel, significantly improving the smoothness of fiber flow, completely solving the problems of lint accumulation and cotton jamming at the stripping plate, ensuring that small pieces of fiber can be continuously and smoothly fed into the fine opening cotton machine, improving the fiber feeding efficiency, reducing damage to the stripping plate and transmission components, reducing equipment failure stops, improving equipment reliability, enhancing the production capacity of the entire production line, and ensuring the quality of the finished product).;
[0024] In the present utility model, the upper guard plate 2, the middle guard plate 14, the lower guard plate 12, and the lower left baffle 11 are sequentially spliced up and down to form a front guard plate assembly (the temporary cotton storage area L, the opening cotton channel K, and the lower cotton channel X are vertically connected to form the overall fiber flow channel of the present utility model, and the front guard plate assembly is the front guard baffle of the overall fiber flow channel); among them, the bottom of the upper guard plate 2 and the upper part of the middle guard plate 14 are designed as arc segments similar to the outer shape of the front roller 3; the middle upper part of the middle guard plate 14 and the lower guard plate 12 are designed as arc segments similar to the outer shape of the spike beater 13; the bottom end of the lower guard plate 12 and the top of the lower left baffle 11 are designed as an integral chamfered inclined plane (the integral chamfered inclined plane ensures the rapid and smooth passage of the fiber flow, avoiding cotton jamming and cotton hanging), and the intersection edge of the chamfered inclined plane and the lower guard plate 12 is in front of the vertical longitudinal middle section of the spike beater 13 (ensuring that the separation point of the fiber flow from the spike beater 13 is advanced, which can change the direction of the centrifugal force in this way, promoting the fiber flow to quickly and effectively separate from the spike beater, ensuring that the fiber flow after opening smoothly enters the lower cotton channel, significantly improving the smoothness of fiber flow, completely solving the problems of lint accumulation and cotton jamming at the stripping plate, ensuring that small pieces of fiber can be continuously and smoothly fed into the fine opening cotton machine, improving the fiber feeding efficiency, reducing damage to the stripping plate and transmission components, reducing equipment failure stops, improving equipment reliability, enhancing the production capacity of the entire production line, and ensuring the quality of the finished product).
[0025] In the present utility model, the upper baffle 5, the doffer 7, the lower right baffle 8, and the lower right support 9 are sequentially spliced up and down to form a rear guard plate assembly (the temporary cotton storage area L, the loosened cotton channel K, and the lower cotton channel X are vertically connected to form the overall fiber flow channel of the present utility model, and the rear guard plate assembly is the rear guard baffle of the overall fiber flow channel); the middle part of the upper baffle 5 is designed as an arc section similar to the outer shape of the rear roller 4; the doffer 7 is a corner plate formed by bending the straight panel by 90 degrees in the middle, and the corner is rounded. The front end of the top of the spliced doffer 7 extends forward from the junction with the upper baffle 5 until it extends to 3 - 10 mm from the movement track of the spikes on the spike beater 13 (the extended section can effectively block and peel off the fibers that turn up with the rotation of the spikes, avoiding reverse flocculation).
[0026] The specific usage of the present utility model is as follows:
[0027] First, assemble the present utility model according to the above - described structural description and the relative assembly relationship shown in the drawings, and install the present utility model at the fiber feeding station of the precision opener. Then, turn on the power to make the front roller 3, the rear roller 4, and the spike beater 13 start to rotate. With the opposite rotation of the front roller 3 and the rear roller 4, the fibers to be loosened in the temporary cotton storage area L are wrapped downward and fed into the loosened cotton channel K; with the rapid rotation of the spike beater 13 and with the assistance of the middle guard plate 14, the spikes on the spike beater 13 gently loosen the fibers fed into the loosened cotton channel K, and at the same time, the spikes also push the fibers to rotate downward until they are pushed out of the loosened cotton channel K, so that the loosened fibers continuously fall into the lower cotton channel X to form a uniform and stable fiber flow. At the same time, since the joint part of the lower guard plate 12 and the lower left baffle 11 at the junction of the loosened cotton channel K and the lower cotton channel X is designed as a chamfer structure, and the upper starting point of the chamfer is in front of the vertical longitudinal middle section of the spike beater 13, such a chamfer design can advance the separation point of the loosened fiber flow from the spike beater 13, thereby changing the direction of the centrifugal force, promoting the fiber flow to quickly and effectively separate from the spike beater, ensuring that the loosened fiber flow smoothly transfers into the lower cotton channel, significantly improving the smoothness of the fiber flow, completely solving the problem of lint accumulation and cotton jamming at the doffer, ensuring that small pieces of fiber can be continuously and smoothly fed into the precision opener, improving the fiber feeding efficiency, reducing the damage to the doffer and transmission components, reducing equipment failure shutdowns, improving equipment reliability, enhancing the production capacity of the entire production line, and ensuring the quality of the finished product. Finally, the uniform and stable fiber flow after loosening is output from the bottom opening of the lower cotton channel X to the high - yield precision opener to achieve fiber feeding for the high - yield precision opener.
Claims
1. A fiber feeding device suitable for a high-yield fine cotton opener, characterized in that: The fiber feeding device comprises a truss-type integral frame (J) composed of a front wall plate (15), a rear wall plate (16) and a left upper support (1), a right upper support (6), a left lower support (10) and a right lower support (9) at four corners; a front roller (3), a rear roller (4) and a corner nail beater (13) arranged in an inverted triangle in the middle and upper part of the inner cavity of the integral frame and connected to the front wall plate (15) and the rear wall plate (16) at both ends through bearings (17), bearing seats (18) and bearing seat plates (19); a temporary cotton storage area (L) in a funnel shape is formed by an upper guard plate (2), an upper baffle plate (5), a left guard wood (20) and a right guard wood (21) above the front roller (3); and a middle guard plate (14) and a lower guard plate (12) are spliced up and down to form a temporary cotton storage area (L) in a funnel shape below the front roller (3). A cotton opening path (K) is formed by a front wall plate (15) and a rear wall plate (16) and has a semicircular columnar cavity structure. A lower cotton path (X) is connected at the lower outlet of the cotton opening path (K) and is formed by a left lower baffle plate (11), a right lower baffle plate (8), a cotton stripping plate (7) connected to the right lower baffle plate, a right lower support baffle (9) connected to the right lower baffle plate, the front wall plate (15), and the rear wall plate (16) and has an open bottom. The rotation direction of the front roller (3) and the rear roller (4) is a counter-rotation to entrain the material downward, and the front half of the front roller (4) is always in a state of rotation from top to bottom during the rotation of the corner nail beater (13). The joint portion of the lower guard plate (12) and the left lower baffle plate (11) located at the intersection of the cotton opening path (K) and the lower cotton path (X) is designed as a chamfered structure, and the upper starting point of the chamfer is located in front of the vertical longitudinal mid-section of the corner nail beater (13).
2. A fiber feeding device suitable for a high-yield fine cotton opener according to claim 1, characterized in that: The upper guard plate (2), the middle guard plate (14), the lower guard plate (12), and the lower left baffle plate (11) are sequentially spliced up and down to form a complete front guard plate assembly, and both ends of each component in the front guard plate assembly are respectively connected to the front wall plate (15) and the rear wall plate (16) by bolts; wherein the bottom of the upper guard plate (2) and the upper part of the middle guard plate (14) are designed as arc segments similar to the appearance of the front roller (3); the middle and upper part of the middle guard plate (14) and the lower guard plate (12) are designed as arc segments similar to the appearance of the corner nail beater (13); the bottom tail end of the lower guard plate (12) and the top of the lower left baffle plate (11) are designed as integrally matched chamfered bevel surfaces, and the intersection edge of the chamfered bevel surface and the lower guard plate (12) is located in front of the vertical longitudinal mid-section of the corner nail beater (13).
3. A fiber feeding device suitable for a high-yield fine cotton opener according to claim 1, characterized in that: The upper baffle plate (5), the cotton stripping plate (7), the right lower baffle plate (8), and the right lower support baffle (9) are sequentially spliced up and down to form a complete rear guard plate assembly, and both ends of each component in the rear guard plate assembly are respectively connected to the front wall plate (15) and the rear wall plate (16) by bolts; wherein the middle part of the upper baffle plate (5) is designed to be an arc segment similar to the appearance of the rear roller (4); the cotton stripping plate (7) is a corner plate formed by bending the middle of a straight plate by 90 degrees, and the corner is rounded, and the top front end of the spliced cotton stripping plate (7) extends forward from the junction with the upper baffle plate (5) until it extends to 3-10 mm from the movement trajectory of the corner nail in the corner nail beater (13).