Carding type non-woven fabric high-speed production system and production method

Abstract

The invention relates to a carding type non-woven fabric high-speed production system and a production method.The production system comprises a bale opener, a fiber opener, a first carding machine, a cross lapping machine, a second carding machine, a heat setting device and a winding machine which are sequentially arranged in the material advancing direction, and the first carding machine and the second carding machine are the same in structure; a single-cylinder carding machine is adopted, and the single-cylinder carding machine comprises a carding machine rack, a feeding mechanism arranged on the carding machine rack in the material advancing direction, a main cylinder mechanism, an upper doffer roller, a lower doffer roller, an upper cotton condensing mechanism, a lower cotton condensing mechanism, an upper cotton stripping mechanism, a lower cotton stripping mechanism, an upper output curtain and a lower output curtain. Under the condition that the quality of the non-woven fabric is ensured, the running speed and the production efficiency of the non-woven fabric are improved, and the production cost of the carding type non-woven fabric is reduced.

Description

Technical Field

[0001] This invention belongs to the field of nonwoven fabric production technology, specifically relating to a high-speed production system and method for carded nonwoven fabrics. Background Technology

[0002] Spunbond nonwoven fabric is a direct-spun type, formed by directly drawing and laying particles into a web, which is very fast and efficient; while spunlace nonwoven fabric uses single-component fiber carding, and the carding speed can reach 250 meters / minute or more. Therefore, both types of nonwoven fabrics are widely used in the market due to their high production efficiency and low cost; however, both types of nonwoven fabrics also have the fatal drawback of poor softness.

[0003] Hot-air / hot-rolled nonwoven fabrics, a type of carded nonwoven fabric, are made from bicomponent or multicomponent fibers through processes such as unpacking, fiber opening, carding, and hot-air or hot-rolling. Compared to spunbond / spunlace nonwoven fabrics, their softness is significantly improved. However, due to the use of bicomponent fibers, their speed and efficiency are much lower than those of spunbond / spunlace fabrics. The maximum carding speed can only reach about 100 meters per minute, which undoubtedly increases the production cost of nonwoven fabrics. On the other hand, forcibly increasing the carding speed of the carding machine will affect the quality of the nonwoven fabric. For example, increasing the speed can lead to over-carding and damage to the fibers due to excessive impact.

[0004] Therefore, developing a high-speed production system and method for carded nonwoven fabrics suitable for bicomponent or multicomponent fibers, and increasing the carding speed while ensuring the quality of nonwoven fabrics, thereby improving the production efficiency of nonwoven fabrics, is crucial for reducing the production cost of carded nonwoven fabrics. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems in the prior art and provide a high-speed production system and method for carded nonwoven fabrics, which can improve the carding speed while ensuring the quality of nonwoven fabrics, thereby improving the production efficiency of carded nonwoven fabrics and reducing the production cost of carded nonwoven fabrics.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A high-speed production system for carded nonwoven fabric includes a pack opener, a fiber opener, a first carding machine, a cross-laying machine, a second carding machine, a heat setting device, and a winding machine arranged sequentially in the material travel direction. The first carding machine and the second carding machine have the same structure and both adopt a single cylinder carding machine. The single cylinder carding machine includes a carding machine frame, a feeding mechanism and a main cylinder mechanism arranged on the carding machine frame in the material travel direction, two upper and lower doffer rollers, two upper and lower condensing mechanisms, two upper and lower stripping mechanisms, and two upper and lower output curtains.

[0007] As a further technical solution, a pneumatic cotton box and a first belt scale are also sequentially arranged between the fiber opener and the first carding machine.

[0008] As a further technical solution, a second belt scale is also provided between the cross-laying machine and the second carding machine.

[0009] As a further technical solution, the feeding mechanism includes a feeding roller and a spiked roller, as well as a feeding plate disposed above the feeding roller and close to the spiked roller.

[0010] As a further technical solution, the main cylinder mechanism includes a main cylinder, a stripping roller and a working roller disposed on the main cylinder.

[0011] As a further technical solution, the cotton condensing mechanism includes a cotton condensing roller and a randomizing roller.

[0012] As a further technical solution, the distance between the main cylinder and the working roll of the first carding machine is 1.2-5 times that of the second carding machine; The distance between the main cylinder and the upper doffer roller of the first carding machine is 1.2-3.8 times (preferably 2 times) that of the second carding machine. The distance between the main cylinder and the lower doffer roll of the first carding machine is 1.2-3.8 times (preferably 2 times) that of the second carding machine. The distance between the condensing roller and the corresponding doffer roller of the first carding machine is 1.2-5 times (preferably 2 times) that of the second carding machine.

[0013] As a further technical solution, in the second carding machine, the distance between the main cylinder and the working roller is 0.15-2.5mm, the distance between the main cylinder and the upper doffer roller and the lower doffer roller is 0.1-2mm and 0.1-2.2mm respectively, and the distance between the condensing roller and the corresponding doffer roller is 0.15-2.5mm.

[0014] As a further technical solution, taking the production of 20gsm carded nonwoven fabric as an example, the equipment parameters of the second carding machine and the first carding machine are as follows: In the second carding machine, the distance between the main cylinder and the working roller is 0.5mm, the distance between the main cylinder and the upper doffer roller and the lower doffer roller is 0.35mm and 0.4mm respectively, and the distance between the condensing roller and the corresponding doffer roller is 0.5mm. In the first carding machine, the distance between the main cylinder and the working roller is 1 mm, the distance between the main cylinder and the upper doffer roller and the lower upper doffer roller is 0.7 mm and 0.8 mm respectively, and the distance between the condensing roller and the corresponding doffer roller is 1 mm (each distance is twice the corresponding distance in the second carding machine).

[0015] As a further technical solution, the cotton stripping mechanism adopts a cotton stripping roller.

[0016] As a further technical solution, the width of the first carding machine is less than or equal to the width of the second carding machine; As a further technical solution, the direction of material travel in the first carding machine is perpendicular to the direction of material travel in the second carding machine.

[0017] As a further technical solution, the heat setting device includes a hot air oven or a hot rolling mill.

[0018] A high-speed production method for carded nonwoven fabric: bicomponent or multicomponent fibers are sequentially opened by a pack opener and a fiber opener, then enter a first carding machine for pre-carding through a pneumatic cotton box, then enter a cross-laying machine for cross-laying, and then enter a second carding machine for carding the transverse fibers. The output fiber web enters a heat setting device for heat setting, and is then wound up to obtain carded nonwoven fabric. The feeding amount of the first carding machine is 2 times or more the weight of the nonwoven fabric; the carding speed of the first carding machine is 50-70% of the carding speed of the second carding machine. The feed rate of the second carding machine is equal to the weight of the nonwoven fabric, and the carding speed of the second carding machine is equal to the running speed of the fiber web, both being greater than or equal to 200 meters per minute.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention improves the carding machine, a bottleneck equipment affecting the production efficiency of nonwoven fabrics. Based on the traditional carding machine, the breast cylinder is removed and only the main cylinder is retained. The improved single-cylinder carding machine can increase the carding speed from about 100 meters / minute to more than 200 meters / minute when carding two-component or multi-component fibers. It can also ensure that the fiber is not excessively damaged due to the increase in linear speed, and the quality of nonwoven fabric will not be deteriorated.

[0020] 2. Replacing the traditional carding machine with a single-cylinder carding machine, using only one carding machine for carding, while increasing the nonwoven fabric's travel speed, results in a deterioration in carding effect. Furthermore, using a cross-laying machine for web laying leads to uneven weight distribution across the left, center, and right sides of the fiber web, as well as significant differences in transverse and longitudinal strength. Therefore, this invention adds a single-cylinder carding machine after web laying. This addresses the issue of deteriorated carding effect after removing the cylinder from the carding machine, and also allows for transverse fiber carding after web laying, balancing the weight distribution and transverse and longitudinal strength of the fiber web. This solves the problems of significant weight distribution across the left, center, and right sides of the fiber web and significant differences in transverse and longitudinal strength of the nonwoven fabric after cross-laying in traditional technology.

[0021] 3. In traditional technology, the carding machine's chest cylinder and main cylinder are carded according to the required basis weight of the nonwoven fabric. Increased linear speed leads to strong fiber impact and damage, and excessive high-speed carding degrades the quality of the nonwoven fabric. This invention, however, uses a first carding machine to initially card the fibers. It increases the spacing between the main cylinder and the work roller, the upper and lower doffer rollers and the main cylinder, and the condensing roller and its corresponding doffer roller. Combined with a carding basis weight setting of twice or more than the nonwoven fabric basis weight, the carding speed only needs to reach 50-70% of the second carding machine's speed to meet the fiber supply, reducing fiber damage and over-carding. The second carding machine then cards according to the nonwoven fabric basis weight. Since it only cardes the longitudinal fibers after cross-laying, its carding speed, increased from approximately 100 meters / minute in traditional technology to over 200 meters / minute, does not cause excessive impact or damage to the fibers. This not only improves production efficiency but also solves the problems of basis weight differences between the left, center, and right sides of the fiber web and differences in transverse and longitudinal strength.

[0022] In summary, this invention, when producing carded hot air / hot rolled nonwoven fabrics, sets up carding machines before and after the cross-laying machine, and improves the structure of the traditional carding machine by removing the chest cylinder and increasing the spacing between each working roller and the main cylinder, the main cylinder and the doffer, and the doffer and the condenser in the first carding machine. The width of the second carding machine is also increased. At the same time, with the adjustment of carding weight and speed, the carding speed of the carding machine is greatly improved while ensuring the quality of the nonwoven fabric, thus increasing the production efficiency of the nonwoven fabric and reducing the production cost of the nonwoven fabric. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a single-cylinder carding machine in one embodiment of the present invention; In the diagram: 1. Opening machine, 2. Fiber opening machine, 3. First carding machine, 4. Cross-laying machine, 5. Second carding machine, 6. Heat setting device, 7. Winding machine, 8. Carding machine frame, 9. Feeding mechanism, 10. Main cylinder mechanism, 11. Doffer roller, 12. Cotton condensing mechanism, 13. Cotton stripping roller, 14. Output curtain, 15. Feeding roller, 16. Gussing roller, 17. Feed plate, 18. Main cylinder, 19. First belt scale, 20. Cotton stripping roller, 21. Working roller, 22. Second cotton condensing roller, 23. Randomization roller, 24. Pneumatic cotton box, 25. Second belt scale. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0025] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] Example 1 Figure 1-2An embodiment of a high-speed production system for carded nonwoven fabrics according to the present invention is shown, comprising a pack opener 1, a fiber opener 2, a first carding machine 3, a cross-laying machine 4, a second carding machine 5, a heat setting device 6, and a winding machine 7 arranged sequentially in the material travel direction. The first carding machine 3 and the second carding machine 5 have the same structure and both adopt a single cylinder carding machine. The single cylinder carding machine includes a carding machine frame 8, a feeding mechanism 9 and a main cylinder mechanism 10 arranged on the carding machine frame 8 in the material travel direction, two upper and lower doffer rollers 11, two upper and lower cotton condensing mechanisms 12, two upper and lower cotton stripping mechanisms, and two upper and lower output curtains 14. This invention improves the carding machine, a bottleneck equipment affecting the production efficiency of nonwoven fabrics. Based on the traditional carding machine, the breast cylinder is removed and only the main cylinder 18 is retained. The improved single-cylinder carding machine can increase the carding speed from about 100 meters / minute to more than 200 meters / minute when carding two-component or multi-component fibers. It can also ensure that the fiber is not excessively damaged due to the increase in linear speed, and the quality of nonwoven fabric will not be deteriorated. Furthermore, while replacing the traditional carding machine with a single-cylinder carding machine increases the nonwoven fabric's travel speed, it also results in a deterioration in the carding effect. Using a cross-laying machine 4 for web laying further leads to uneven weight distribution across the fiber web and significant differences in transverse and longitudinal strength. Therefore, this invention adds a single-cylinder carding machine after web laying. This addresses the issue of reduced carding effect after removing the cylinder from the carding machine, and also allows for transverse fiber carding after web laying, balancing the weight distribution and transverse and longitudinal strength of the fiber web. This solves the problems of significant weight distribution and transverse and longitudinal strength differences in the fiber web after cross-laying in traditional technologies.

[0029] As an embodiment of the high-speed production system for carded nonwoven fabric of the present invention, a pneumatic cotton box 24 and a first belt scale 19 are also arranged sequentially between the fiber opener 2 and the first carder 3.

[0030] As an embodiment of the high-speed production system for carded nonwoven fabric of the present invention, a second belt scale 25 is also provided between the cross-laying machine 4 and the second carding machine 5.

[0031] As an embodiment of the high-speed production system for carded nonwoven fabric of the present invention, the feeding mechanism 9 includes a feeding roller 15 and a licker roller 16, and a feeding plate 17 disposed above the feeding roller 15 and close to the licker roller 16.

[0032] As an embodiment of the high-speed production system for carded nonwoven fabric of the present invention, the main cylinder mechanism 10 includes a main cylinder 18, a stripping roller 20 disposed on the main cylinder 18, and a work roller 21. As an embodiment of the high-speed production system for carded nonwoven fabrics of the present invention, the cotton condensing mechanism 12 includes a cotton condensing roller 22 and a randomizing roller 23.

[0033] As an embodiment of the high-speed production system for carded nonwoven fabrics of the present invention, the distance between the main cylinder 18 and the working roller 21 of the first carding machine is 1.2-5 times that of the second carding machine; The distance between the main cylinder 18 and the upper doffer roll of the first carding machine is 1.2-3.8 times that of the second carding machine; The distance between the main cylinder 18 and the lower doffer roll of the first carding machine is 1.2-3.8 times that of the second carding machine; The distance between the condensing roller 22 and the corresponding doffer roller 11 of the first carding machine is 1.2-5 times that of the second carding machine.

[0034] As an embodiment of the high-speed production system for carded nonwoven fabric of the present invention, in the second carding machine 5, the distance between the main cylinder 18 and the working roller 21 is 0.15-2.5mm, the distance between the main cylinder 18 and the upper doffer roller and the lower doffer roller is 0.1-2mm and 0.1-2.2mm respectively, and the distance between the condensing roller 22 and the corresponding doffer roller 11 is 0.15-2.5mm.

[0035] As an embodiment of the high-speed production system for carded nonwoven fabric of the present invention, taking the production of 20gsm carded nonwoven fabric as an example, the equipment parameters of the second carding machine 5 and the first carding machine 1 are as follows: In the second carding machine, the distance between the main cylinder 18 and the working roller 21 is 0.5mm, the distance between the main cylinder 18 and the upper doffer roller and the lower doffer roller is 0.35mm and 0.4mm respectively, and the distance between the condensing roller 22 and the corresponding doffer roller 11 is 0.5mm. In the first carding machine, the distance between the main cylinder 18 and the work roller 21 is 1 mm, the distances between the main cylinder 18 and the upper and lower doffer rollers are 0.7 mm and 0.8 mm respectively, and the distance between the condensing roller 22 and the corresponding doffer roller 11 is 1 mm (each distance is twice the corresponding distance in the second carding machine). In traditional technology, the chest cylinder and main cylinder of the carding machine are carded according to the required basis weight of the nonwoven fabric. After the linear speed is increased, the fiber impact and damage are strong. In addition, high-speed over-carding deteriorates the quality of the nonwoven fabric. However, the present invention performs preliminary carding of the fibers through the first carding machine 3, which increases the distance between the main cylinder 18 and the work roller 21, the upper and lower doffer rollers 11 and the main cylinder 18, and the condensing roller 22 and the corresponding doffer roller 11. Combined with the carding basis weight setting of twice or more the basis weight of the nonwoven fabric, the carding speed only needs to reach 50% of the carding speed of the second carding machine 5. -70% is sufficient to meet the fiber supply, reducing damage and over-carding of the fibers; while the second carding machine 5 is set according to the spacing between the rollers in the traditional carding machine and carding according to the nonwoven fabric basis weight. Since it only cardes the transverse fibers after cross-laying, its carding speed is increased from about 100 meters / minute in the traditional technology to more than 200 meters / minute without causing excessive impact and damage to the fibers. This not only improves production efficiency, but also solves the problems of basis weight difference between the left, middle and right sides of the fiber web and transverse and longitudinal strength difference.

[0036] As an embodiment of the high-speed production system for carded nonwoven fabrics of the present invention, the cotton stripping mechanism adopts a cotton stripping roller 13.

[0037] As an embodiment of the high-speed production system for carded nonwoven fabric of the present invention, the width of the first carding machine is less than or equal to the width of the second carding machine. Specifically, the width of the first carding machine is 3 meters or 3.8 meters, and the width of the second carding machine is 3.8 meters or more.

[0038] As an embodiment of the high-speed production system for carded nonwoven fabrics of the present invention, the direction of material travel in the first carding machine 3 is perpendicular to the direction of material travel in the second carding machine 5.

[0039] As an embodiment of the high-speed production system for carded nonwoven fabrics of the present invention, the heat setting device 6 includes a hot air oven or a hot rolling mill.

[0040] Example 2 A high-speed production method for carded nonwoven fabric includes the following steps: bicomponent or multicomponent fibers are sequentially opened by a pack opener and a fiber opener, then enter a first carding machine for pre-carding through a pneumatic cotton box, then enter a cross-laying machine for cross-laying, and then enter a second carding machine to card the transverse fibers. The output fiber web enters a heat setting device for heat setting, and is then wound up to obtain carded nonwoven fabric. The feeding amount of the first carding machine is 2 times or more the weight of the nonwoven fabric; the carding speed of the first carding machine is 50-70% of the carding speed of the second carding machine. The feed rate of the second carding machine is equal to the weight of the nonwoven fabric, and the carding speed of the second carding machine is equal to the running speed of the fiber web, both ≥200 meters / minute.

[0041] Example 3 Taking the production of 20gsm hot-air nonwoven fabric as an example, this invention introduces a high-speed production method for carded nonwoven fabric, comprising the following steps: The PE / PET bicomponent fibers are sequentially opened by an unpacking machine and then by a fiber opener before entering a pneumatic cotton box. A belt scale controls the weight to be twice the weight of the hot-air nonwoven fabric (i.e., 40 gsm) before it enters the first carding machine. The carding speed of the first carding machine is set to 120 m / min for pre-carding to prevent over-carding damage. After pre-carding, a 3-meter wide fiber web enters a cross-laying machine for cross-laying. The output 3.8-meter fiber web, controlled by a belt scale to a weight of 20 gsm (the same as hot-air nonwoven fabric), enters the second carding machine. The second carding machine cardes the transverse fibers at a speed of 200 m / min. The output fiber web then enters a hot-air drying oven at 200 m / min for hot-air setting, and is finally wound up to obtain 20 gsm hot-air nonwoven fabric.

[0042] In this embodiment, both the first carding machine and the second carding machine are single cylinder carding machines as described in Embodiment 1 of the present invention, and the spacing between the rollers of the first carding machine and the second carding machine is set according to the requirements in Embodiment 1.

[0043] Comparative Example 1 Taking the production of 20gsm hot-air nonwoven fabric as an example, this paper introduces a production method for carded nonwoven fabric, including the following steps: After the PE / PET bicomponent fibers are opened by the unpacking machine and the fiber opening machine, they enter the pneumatic cotton box. Then, the weight is controlled by the belt scale to be the weight of hot air nonwoven fabric (i.e., 20gsm). The fibers are then fed into a traditional carding machine (i.e., main cylinder + chest cylinder double cylinder mode). The carding speed of the traditional carding machine is set to 100 meters / minute to card the fibers. After carding, the fibers are directly fed into the hot air drying oven at a speed of 100 meters / minute for hot air setting. Finally, they are wound up to obtain 20gsm hot air nonwoven fabric.

[0044] Comparative Example 2 Taking the production of 20gsm hot-air nonwoven fabric as an example, this paper introduces a production method for carded nonwoven fabric, including the following steps: After the PE / PET bicomponent fibers are opened by the unpacking machine and the fiber opening machine, they enter the pneumatic cotton box. Then, the weight is controlled by the belt scale to be the weight of hot air nonwoven fabric (i.e., 20gsm). The fibers are then fed into a traditional carding machine (i.e., main cylinder + chest cylinder double cylinder mode). The carding speed of the traditional carding machine is set to 200 meters / minute to card the fibers. After carding, the fibers are directly fed into the hot air drying oven at a speed of 200 meters / minute for hot air setting. Finally, they are wound up to obtain 20gsm hot air nonwoven fabric.

[0045] Comparative Example 3 Taking the production of 20gsm hot-air nonwoven fabric as an example, this paper introduces a method for producing carded nonwoven fabric, including the following steps: The PE / PET bicomponent fibers are sequentially opened by an unpacking machine and then by a fiber opener before entering a pneumatic cotton box. The weight is then controlled by a belt scale to be the weight of the hot air nonwoven fabric (i.e., 20 gsm). The fibers are then fed into a traditional carding machine (i.e., a double-cylinder mode with a main cylinder and a chest cylinder). The carding speed of the traditional carding machine is set to 100 meters per minute to card the fibers. After carding, the 3-meter-wide fiber web enters a cross-laying machine for cross-laying. The output 3.8-meter fiber web enters a hot air drying oven at a speed of 100 meters per minute for hot air setting, and then is wound up to obtain 20 gsm hot air nonwoven fabric.

[0046] Example 1: Performance testing of nonwoven fabrics The nonwoven fabrics produced in Example 3 and each comparative example were subjected to quality tests such as basis weight, strength, softness, and thickness. The results are shown in Table 1. Weight: in accordance with GB / T24218-1-2009; Strength: Conducted in accordance with GB / T24218-3-2010; Softness: As per GB / T 8942-2016; Thickness: in accordance with GB / T24218-2-2009; Table 1

[0047] As shown in Table 1, when using a traditional carding machine, forcibly increasing the carding speed in Comparative Example 2 severely affected its thickness, softness uniformity, strength, transverse and longitudinal strength differences, and basis weight uniformity, resulting in a significant decrease in the quality of the nonwoven fabric. In contrast, the carded nonwoven fabric prepared by this invention exhibits superior basis weight uniformity and transverse and longitudinal strength uniformity compared to Comparative Examples 1-3, while its thickness and softness show no significant difference from those of Comparative Examples 1 and 3 using traditional techniques. However, its production efficiency is twice that of Comparative Examples 1 and 3 using traditional techniques. Therefore, this invention truly achieves improved production efficiency without reducing the quality of carded nonwoven fabric, thereby lowering its production cost.

[0048] The embodiments described above are merely preferred embodiments of the present invention, and not an exhaustive list of all possible implementations of the present invention. Any obvious modifications made by those skilled in the art without departing from the principles and spirit of the present invention should be considered to be included within the scope of protection of the claims of the present invention.

Claims

1. A high-speed production system for carded nonwoven fabrics, characterized in that, The package includes a packer (1), a fiber opener (2), a first carding machine (3), a cross-laying machine (4), a second carding machine (5), a heat setting device (6), and a winding machine (7) arranged in sequence according to the material travel direction. The first carding machine (3) and the second carding machine (5) have the same structure and both adopt a single cylinder carding machine. The single cylinder carding machine includes a carding machine frame (8), a feeding mechanism (9) and a main cylinder mechanism (10) arranged on the carding machine frame (8) according to the material travel direction, two upper and lower doffer rollers (11), two upper and lower cotton condensing mechanisms (12), two upper and lower cotton stripping mechanisms, and two upper and lower output curtains (14).

2. The high-speed production system for carded nonwoven fabrics according to claim 1, characterized in that, A pneumatic cotton box (24) and a first belt scale (19) are also arranged sequentially between the fiber opener (2) and the first carding machine (3).

3. The high-speed production system for carded nonwoven fabrics according to claim 2, characterized in that, A second belt scale (25) is also provided between the cross-laying machine (4) and the second combing machine (5).

4. The high-speed production system for carded nonwoven fabrics according to claim 1, characterized in that, The feeding mechanism (9) includes a feeding roller (15) and a piercing roller (16), as well as a feeding plate (17) disposed above the feeding roller (15) and close to the piercing roller (16).

5. The high-speed production system for carded nonwoven fabrics according to claim 1, characterized in that, The main cylinder mechanism (10) includes a main cylinder (18), a stripping roller (20) disposed on the main cylinder (18), and a working roller (21). The cotton condensing mechanism (12) includes a cotton condensing roller (22) and a randomizing roller (23).

6. The high-speed production system for carded nonwoven fabrics according to claim 1, characterized in that, The cotton stripping mechanism uses a cotton stripping roller (13).

7. The high-speed production system for carded nonwoven fabrics according to claim 1, characterized in that, The width of the first carding machine (3) is less than or equal to the width of the second carding machine (5); The direction of material travel in the first carding machine (3) is perpendicular to the direction of material travel in the second carding machine (5).

8. The high-speed production system for carded nonwoven fabrics according to claim 1, characterized in that, Heat setting equipment includes hot air ovens or hot rolling mills.

9. A high-speed production method for carded nonwoven fabrics, characterized in that, Two-component or multi-component fibers are sequentially opened by a pack opener and a fiber opener, then enter the first carding machine for pre-carding through a pneumatic cotton box, and then enter the cross-laying machine for cross-laying. After that, they enter the second carding machine to card the transverse fibers. The output fiber web enters the heat setting device for heat setting, and is then wound up to obtain carded nonwoven fabric. The feeding amount of the first carding machine is 2 times or more the weight of the nonwoven fabric; the carding speed of the first carding machine is 50-70% of the carding speed of the second carding machine. The feed rate of the second carding machine is equal to the weight of the nonwoven fabric, and the carding speed of the second carding machine is equal to the running speed of the fiber web, both ≥200 meters / minute.

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