Automatic long fiber cutting-off equipment

Abstract

The utility model discloses automatic long fiber cutting equipment which comprises a pair of supports, a first roller groove, a second roller groove and a third roller groove are formed in the supports respectively, a pressing roller, a leather roller, a cutting roller and a combing roller are installed between the supports respectively, one support is fixedly connected with an installation base, and the other support is fixedly connected with a cutting device. And a transmission mechanism for driving the leather roller to rotate is arranged on the mounting seat. An automatic online cutting mode is adopted, the labor cost of independent cutting can be reduced, 1-2 workers are saved, the turnover period can be omitted, the efficiency is high, a hob cutting method is adopted for cutting, the surface of the leather roller is wrapped with beef tendon or hard plastic, loss caused by mutual friction between a cutting roller blade and the surface of the leather roller can be reduced, and the production cost is reduced. The cut carbon fibers can be fully scattered and transferred into a net tire machine, so that the laying uniformity of each layer of carbon fibers in a net tire is guaranteed, and the carbon fibers are prevented from being stacked and wound together.

Description

Technical Field

[0001] The utility model belongs to the technical field of fiber processing, and particularly relates to an automatic long fiber cutting device. Background Art

[0002] Carbon fiber composites are widely used in the fields of aviation, aerospace, photovoltaic and semiconductor. To produce carbon fiber composites, it is first necessary to cut the raw carbon fiber wire coils into carbon fibers of the required length. Since the specific strength and specific modulus of carbon fibers are relatively high, cutting the fibers has become a major problem. In addition, the Z-direction strength of carbon fiber composites comes from the 2.5D or 3D structure formed by the carbon fibers and the carbon fiber web through the needling process or the piercing process, and the uniformity of the web depends on the dispersed distribution of the carbon fibers. Therefore, it is a crucial factor to avoid the bonding of the cut carbon fibers and ensure the uniform laying of the carbon fibers during the production of the web.

[0003] The existing methods for cutting carbon fibers include the round knife extrusion method and the guillotine cutting method. Although the round knife extrusion method has a certain efficiency for cutting short carbon fibers with a length of 1 - 10 mm, for carbon fibers with a length of 50 - 100 mm, it will occur that the fibers cannot be cut and the knife will stick, and it needs to be cleaned manually continuously. At the same time, the extrusion will also damage the fibers, resulting in a phenomenon of weakened strength; for the guillotine cutting method, the fiber cutting efficiency is relatively low, and at the same time, the equipment vibrates severely, and it is easy for metal fittings to fall into the fibers, causing damage to the web machine; in addition, both of the above methods require 1 - 2 workers, and the laying of the fibers still depends on manual feeding, making it difficult to ensure the uniformity of the web. Therefore, in view of the above problems, it is of great significance to provide an automatic long fiber cutting device by the utility model. Summary of the Utility Model

[0004] The utility model provides an automatic long fiber cutting device, which adopts an automatic online cutting method. The cutting and the web laying are on the same production line. It can not only reduce the labor cost of separate cutting, save 1 - 2 employees, but also eliminate the turnover period, with very high efficiency; the cutting adopts the hob cutting method, and the surface of the leather roller is wrapped with cowhide or hard plastic to reduce the loss caused by the mutual friction between the cutting roller blade and the surface of the leather roller; the combing roller adopts long strip-shaped blades, which can fully disperse the cut carbon fibers and transfer them to the web machine to ensure the uniformity of each layer of carbon fibers laid in the web, and avoid accumulation and entanglement. In summary, the problems in the background art are solved.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] An automatic long fiber cutting device of the utility model includes a pair of brackets. First roller grooves, second roller grooves and third roller grooves are respectively formed on the brackets. The first roller grooves, second roller grooves and third roller grooves are distributed in the order from top to bottom. A bearing seat is fixedly connected to the bottom of the third roller groove, and a bearing hole is formed in the bearing seat. A pressure roller, a leather roller, a cutting roller and a combing roller are respectively installed between the pair of brackets. A mounting seat is fixedly connected to one of the brackets, and a transmission mechanism for driving the leather roller to rotate is arranged on the mounting seat;

[0007] Both end roller shafts of the pressure roller pass through the first roller groove and are installed with a pair of bearing sleeves. The pair of bearing sleeves are distributed vertically. A semicircular groove is formed at the center thereof, and each pair of bearing sleeves are connected together by bolts. Both end roller shafts of the pressure roller are installed in the groove between the pair of bearing sleeves through bearings;

[0008] The leather roller and the cutting roller are at the same horizontal height. Both end roller shafts of the leather roller and the cutting roller pass through the second roller groove and are installed with a pair of bearing holders. The pair of bearing holders are distributed horizontally. A semicircular groove is formed at the center thereof, and each pair of bearing holders are connected together by bolts. Both end roller shafts of the leather roller and the cutting roller are installed in the groove between the pair of bearing holders through bearings;

[0009] Both end roller shafts of the combing roller pass through the bearing hole on the bearing seat and are installed in the bearing hole through bearings.

[0010] Further, the transmission mechanism includes a motor, a driving wheel and a driven wheel. The driving wheel is installed on one of the roller shafts of the combing roller, the driven wheel is installed on one of the roller shafts of the leather roller, the motor is installed on the top of the mounting seat, and a transmission wheel is installed on its output shaft. The transmission wheel, the driving wheel and the driven wheel are on the same side, and transmission belts are respectively connected between the transmission wheel and the driving wheel and between the driving wheel and the driven wheel.

[0011] Further, a hydraulic cylinder is installed on the top of the first roller groove. The bottom end of the output shaft of the hydraulic cylinder penetrates through the top of the first roller groove and is fixedly connected to the top of each pair of bearing sleeves.

[0012] Further, both the first roller groove and the bearing sleeve are inclined. Both inner side walls of the first roller groove are fixedly connected with first guide rails. Each pair of bearing sleeves are located in the first roller groove, and their widths are equal to the width of the first roller groove. Grooves with the same width as the first guide rails are formed on both side walls of each pair of bearing sleeves.

[0013] Further, threaded holes are provided on both sides of the second roller groove. Screws that are matched with the threaded holes are threadedly connected in the threaded holes. One side of each pair of bearing holders is fixedly connected with a threaded cylinder. The inner diameter of the threaded cylinder is equal to the diameter of the screw, and their centers are located on the same straight line. Moreover, internal threads that are matched with the screw are engraved on the inner wall of the threaded cylinder.

[0014] Further, second guide rails are fixedly connected to both the top and bottom of the second roller groove. Each pair of bearing holders is located inside the second roller groove, and its height is equal to the height of the second roller groove. Moreover, grooves that are equal in width to the second guide rails are provided on the top and bottom surfaces of each pair of bearing holders.

[0015] Further, strip-shaped blades are provided on the roller body of the cutting roller. The strip-shaped blades are spirally distributed on the roller body of the cutting roller, and the distance between every two adjacent strip-shaped blades is equal.

[0016] The utility model has the following beneficial effects compared with the prior art:

[0017] (1) When the long fiber automatic cutting equipment in the utility model is in use, it adopts the automatic online cutting method, and the cutting and the laying of the web are on the same production line. It can not only reduce the labor cost of separate cutting, save 1 - 2 employees, but also eliminate the turnover period, and the efficiency is very high;

[0018] (2) When the long fiber automatic cutting equipment in the utility model is in use, the cutting adopts the hob cutting method, and the roller surface of the leather roller is wrapped with cow tendon or hard plastic to reduce the loss caused by the mutual friction between the blades of the cutting roller and the surface of the leather roller;

[0019] (3) When the long fiber automatic cutting equipment in the utility model is in use, the combing roller adopts strip-shaped blades, which can fully disperse the cut carbon fiber and transfer it to the web machine to ensure the uniformity of the carbon fiber laid in each layer of the web and avoid accumulation and entanglement.

[0020] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a structural schematic diagram of a long fiber automatic cutting equipment of the utility model;

[0023] Figure 2 Schematic structural diagram of a long fiber automatic cutting device of the present utility model from another angle;

[0024] Figure 3 Schematic structural diagram of the bracket in the present utility model;

[0025] Figure 4 Schematic structural diagram of the pressure roller in the present utility model;

[0026] Figure 5 Schematic structural diagram of the leather roller in the present utility model;

[0027] Figure 6 Schematic structural diagram of the cutting roller in the present utility model;

[0028] Figure 7 Schematic structural diagram of the bearing socket in the present utility model;

[0029] Figure 8 Schematic structural diagram of the combing roller in the present utility model;

[0030] Figure 9 Schematic structural diagram of the transmission mechanism in the present utility model;

[0031] Figure 10 Side view of the transmission mechanism in the present utility model.

[0032] In the drawings, the list of components represented by each reference numeral is as follows:

[0033] 1. Bracket; 2. First roller groove; 3. Second roller groove; 4. Third roller groove; 5. Bearing seat; 6. Pressure roller; 7. Leather roller; 8. Cutting roller; 9. Combing roller; 10. Mounting seat; 11. Bearing sleeve; 12. Bearing socket; 13. Motor; 14. Driving wheel; 15. Driven wheel; 16. Driving pulley; 17. Transmission belt; 18. Hydraulic cylinder; 19. First guide rail; 20. Threaded hole; 21. Screw; 22. Threaded barrel; 23. Second guide rail. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0035] In the description of the present utility model, it should be understood that terms such as "relative", "one end", "inside", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc. indicating orientation or positional relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0036] Please refer to Figure 1-10 As shown, a long fiber automatic cutting device of the present utility model includes a pair of brackets 1. In this specific embodiment, the structure and shape of the bracket 1 are side brackets as shown in the figure. The brackets 1 are respectively provided with a first roller groove 2, a second roller groove 3 and a third roller groove 4. The first roller groove 2, the second roller groove 3 and the third roller groove 4 are distributed in the order from top to bottom. A bearing seat 5 is fixedly connected to the bottom of the third roller groove 4. A bearing hole is provided in the bearing seat 5. Between the pair of brackets 1, a pressure roller 6, a leather roller 7, a cutting roller 8 and a combing roller 9 are respectively installed. The roller surfaces of the pressure roller 6 and the leather roller 7 are wrapped with cowhide or hard plastic, and their hardness is less than that of carbon fiber filaments. The roller surface of the combing roller 9 is wrapped with tungsten alloy, and its hardness is greater than that of carbon fiber filaments. A mounting seat 10 is fixedly connected to one of the brackets 1. A transmission mechanism for driving the leather roller 7 to rotate is provided on the mounting seat 10. The bottom of the bracket 1 is slidably mounted on the ground, and the pair of brackets 1 can be pulled apart in both side directions so as to remove the pressure roller 6, the leather roller 7, the cutting roller 8 and the combing roller 9 from between the brackets 1 for maintenance and replacement. A fiber yarn rack is provided on one side of the bracket 1, and a carbon fiber filament roll to be cut is placed on the fiber yarn rack;

[0037] Both ends of the roller shaft of the pressure roller 6 pass through the first roller groove 2 and are respectively installed with a pair of bearing sleeves 11. The pair of bearing sleeves 11 are distributed vertically. A semi-circular groove is provided at the center thereof, and each pair of bearing sleeves 11 are connected together by bolts. Both ends of the roller shaft of the pressure roller 6 are installed in the groove between the pair of bearing sleeves 11 through bearings. By unscrewing the bolts, the pair of bearing sleeves 11 can be disassembled so as to remove the pressure roller 6 from between the brackets 1;

[0038] The leather roller 7 and the cutting roller 8 are at the same horizontal height. Both ends of the roller shafts of the leather roller 7 and the cutting roller 8 pass through the second roller groove 3 and are respectively installed with a pair of bearing holders 12. The pair of bearing holders 12 are distributed horizontally. A semi-circular groove is provided at the center thereof, and each pair of bearing holders 12 are connected together by bolts. Both ends of the roller shafts of the leather roller 7 and the cutting roller 8 are installed in the groove between the pair of bearing holders 12 through bearings. By unscrewing the bolts, the pair of bearing holders 12 can be disassembled so as to remove the leather roller 7 and the cutting roller 8 from between the brackets 1;

[0039] The roller shafts at both ends of the combing roller 9 pass through the bearing holes on the bearing seat 5 and are installed in the bearing holes through bearings. The combing roller 9 adopts an umbrella-shaped rotating blade. When the cut carbon fiber falls on the combing roller 9, the combing roller 9 can fully break up the cut fibers and transfer them evenly to the mesh machine to ensure the uniformity of laying each layer of carbon fiber in the mesh and avoid accumulation and entanglement. A feeding belt is arranged under the combing roller 9, and the fibers broken up by the combing roller 9 can be transferred to the feeding curtain of the mesh machine through the feeding belt.

[0040] Among them, the transmission mechanism includes a motor 13, a driving wheel 14 and a driven wheel 15. The driving wheel 14 is installed on one of the roller shafts of the combing roller 9, and the driven wheel 15 is installed on one of the roller shafts of the leather roller 7. The motor 13 is installed on the top of the mounting seat 10, and a transmission wheel 16 is installed on its output shaft. The transmission wheel 16, the driving wheel 14 and the driven wheel 15 are located on the same side, and a transmission belt 17 is connected between the transmission wheel 16 and the driving wheel 14, and between the driving wheel 14 and the driven wheel 15. The transmission wheel 16, the driving wheel 14 and the driven wheel 15 are synchronous wheels, and the transmission belt 17 is a synchronous belt. When the motor 13 rotates, it can drive the transmission wheel 16 to rotate together. At this time, the driving wheel 14 and the driven wheel 15 can be driven to rotate together through the transmission belt 17. When the driving wheel 14 and the driven wheel 15 rotate, they can drive the combing roller 9 and the leather roller 7 to rotate together.

[0041] Among them, a hydraulic cylinder 18 is installed at the top of the first roller groove 2, and the bottom end of the output shaft of the hydraulic cylinder 18 passes through the top of the first roller groove 2 and is fixedly connected to the top of each pair of bearing sleeves 11. By driving the hydraulic cylinder 18, the bearing sleeves 11 together with the pressure roller 6 can be driven to move up and down along the first roller groove 2, so as to adjust the distance between the pressure roller 6 and the leather roller 7 as needed.

[0042] Among them, the first roller groove 2 and the bearing sleeve 11 are both inclined, and the inner walls on both sides of the first roller groove 2 are fixedly connected with the first guide rails 19. Each pair of bearing sleeves 11 is located in the first roller groove 2, and its width is equal to the width of the first roller groove 2. The side walls on both sides of each pair of bearing sleeves 11 are provided with grooves equal to the width of the first guide rail 19. The first guide rail 19 can fit in the groove. When the bearing sleeve 11 moves up and down along the first roller groove 2, the mutual cooperation between the first guide rail 19 and the groove can play a limiting role, so as to improve the stability of the bearing sleeve 11 and the pressure roller 6.

[0043] Among them, threaded holes 20 are formed on both sides of the second roller groove 3. A screw 21 that mates with the threaded hole 20 is connected to the threaded hole 20 by internal threads. One side of each pair of bearing seat holders 12 is fixedly connected to a threaded cylinder 22. The inner diameter of the threaded cylinder 22 is equal to the diameter of the screw 21, and their centers are located on the same straight line. Moreover, internal threads that mate with the screw 21 are engraved on the inner wall of the threaded cylinder 22. The screw 21 can be screwed into the threaded cylinder 22. Through the mutual cooperation between the screw 21 and the threaded cylinder 22, the bearing seat holder 12 together with the leather roller 7 and the cutting roller 8 can be driven to move left and right along the second roller groove 3, so as to adjust the distance between the leather roller 7 and the cutting roller 8 as needed.

[0044] Among them, second guide rails 23 are fixedly connected to both the top and the bottom of the second roller groove 3. Each pair of bearing seat holders 12 is located inside the second roller groove 3, and its height is equal to the height of the second roller groove 3. Moreover, grooves with the same width as the second guide rails 23 are formed on the top and bottom surfaces of each pair of bearing seat holders 12. The second guide rails 23 can be fitted into the grooves. When the bearing seat holder 12 moves left and right along the second roller groove 3, the mutual cooperation between the second guide rails 23 and the grooves can play a role in limiting, so as to improve the stability of the bearing seat holder 12, the leather roller 7, and the cutting roller 8.

[0045] Among them, strip-shaped blades are arranged on the roller body of the cutting roller 8. The strip-shaped blades are spirally distributed on the roller body of the cutting roller 8, and the distance between every two adjacent strip-shaped blades is equal. When the carbon fiber filaments come into contact with the cutting roller 8, each strip-shaped blade can be used to cut the long fibers into several sections of short fibers at equal intervals.

[0046] The circuits, electronic components, and chip modules involved in the present utility model are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to software and methods either.

[0047] The standard parts used in the application documents can all be purchased from the market. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. The electrical components appearing in this article are all electrically connected to the external main controller and 220V mains power or 380V industrial power, and the main controller can be a conventional known device that controls the LED lamp body, etc.

[0048] The working principle of the present utility model is:

[0049] When the utility model is in use, firstly, all the electrical components in the cutting device are externally connected to a control switch and a power source through wires, and the motor 13 is driven to drive the driving wheel 16 and the transmission belt 17 to drive the driving wheel 14 and the driven wheel 15 to rotate together respectively, so as to drive the combing roller 9 and the leather roller 7 to rotate together through the driving wheel 14 and the driven wheel 15. Then, the carbon fiber filaments placed on the fiber yarn frame on one side of the cutting device are threaded between the pressure roller 6 and the leather roller 7, and the hydraulic cylinder 18 is driven to drive the bearing sleeve 11 together with the pressure roller 6 to move up and down along the first roller groove 2, so as to narrow the gap between the pressure roller 6 and the leather roller 7, thereby increasing the friction to make the pressure roller 6 and the leather roller 7 rotate in opposite directions, and then clamping and driving the carbon fiber filaments on the fiber yarn frame to move. Then, through the reverse rotation of the pressure roller 6 and the leather roller 7, the carbon fiber filaments between the pressure roller 6 and the leather roller 7 can be sent between the cutting roller 8 and the leather roller 7. The gap between the cutting roller 8 and the leather roller 7 can be controlled by adjusting the screw 21. After the cutting roller 8 and the leather roller 7 rotate in opposite directions, the long carbon fibers can be cut into several sections of short fibers at equal intervals by the long strip-shaped blades on the roller body of the cutting roller 8. After that, the cut short fibers fall onto the combing roller 9, and the combing roller 9 can fully disperse the cut short fibers. After being dispersed, the short fibers fall onto the feeding belt located below the combing roller 9, and the feeding belt can transfer them to the feeding curtain of the web forming machine, and then subsequent processing can be carried out. After the cutting device is used for a long time, the pair of bearing sleeves 11 and the bearing seat 12 can be disassembled by unscrewing the bolts, and then the pair of brackets 1 can be pulled apart to both sides, so as to remove the pressure roller 6, the leather roller 7, the cutting roller 8 and the combing roller 9 from between the brackets 1 for maintenance and replacement.

[0050] The preferred embodiments of the utility model disclosed above are only used to help illustrate the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the utility model, so that those skilled in the technical field can understand and utilize the utility model well. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A long fiber automatic cutting device, characterized in that: The invention comprises a pair of brackets (1), wherein the brackets (1) are respectively provided with a first roller groove (2), a second roller groove (3) and a third roller groove (4), wherein the first roller groove (2), the second roller groove (3) and the third roller groove (4) are arranged in order from top to bottom, wherein a bearing seat (5) is fixedly connected to the bottom of the third roller groove (4), wherein a bearing hole is provided on the bearing seat (5), and a pressing roller (6), a leather roller (7), a cutting roller (8) and a combing roller (9) are respectively installed between the pair of brackets (1), wherein a mounting seat (10) is fixedly connected to one of the brackets (1), and a transmission mechanism for driving the leather roller (7) to rotate is provided on the mounting seat (10); The roller shafts at both ends of the pressure roller (6) pass through the first roller groove (2) and are installed with a pair of bearing sleeves (11), the pair of bearing sleeves (11) are distributed up and down, and a semicircular groove is opened at the center, and each pair of bearing sleeves (11) are connected together by bolts, and the roller shafts at both ends of the pressure roller (6) are installed in the groove between the pair of bearing sleeves (11) through bearings; The leather roller (7) and the cutting roller (8) are located at the same horizontal height, and the roller shafts at both ends of the leather roller (7) and the cutting roller (8) pass through the second roller groove (3) and are installed with a pair of bearing holders (12), the pair of bearing holders (12) are distributed on the left and right, and a semicircular groove is opened at the center, and each pair of the bearing holders (12) are connected together by bolts, and the roller shafts at both ends of the leather roller (7) and the cutting roller (8) are installed in the groove between the pair of bearing holders (12) through bearings; The roller shafts at both ends of the combing roller (9) pass through the bearing holes on the bearing seat (5) and are installed in the bearing holes through bearings.

2. The long fiber automatic cutting device according to claim 1, characterized in that: The transmission mechanism comprises a motor (13), a driving wheel (14) and a driven wheel (15); the driving wheel (14) is mounted on one of the roller shafts of the combing roller (9); the driven wheel (15) is mounted on one of the roller shafts of the leather roller (7); the motor (13) is mounted on the top of the mounting seat (10); a transmission wheel (16) is mounted on the output shaft of the motor (13); the transmission wheel (16), the driving wheel (14) and the driven wheel (15) are located on the same side; and a transmission belt (17) is connected between the transmission wheel (16) and the driving wheel (14) and between the driving wheel (14) and the driven wheel (15).

3. The long fiber automatic cutting device according to claim 1, characterized in that: A hydraulic cylinder (18) is installed on the top of the first roller groove (2), and the bottom end of the output shaft of the hydraulic cylinder (18) passes through the top of the first roller groove (2) and is fixedly connected to the top of each pair of bearing sleeves (11).

4. The long fiber automatic cutting device according to claim 1, characterized in that: The first roller groove (2) and the bearing sleeve (11) are both inclined, and the inner walls on both sides of the first roller groove (2) are fixedly connected to the first guide rail (19). Each pair of the bearing sleeves (11) is located in the first roller groove (2) and has a width equal to that of the first roller groove (2). In addition, the side walls on both sides of each pair of the bearing sleeves (11) are provided with grooves equal to the width of the first guide rail (19).

5. The long fiber automatic cutting device according to claim 1, characterized in that: Threaded holes (20) are provided on both sides of the second roller groove (3), and the threaded holes (20) are internally threadedly connected to a screw rod (21) that matches the threaded holes (20). A threaded barrel (22) is fixedly connected to one side of each pair of bearing holders (12), and the inner diameter of the threaded barrel (22) is equal to the diameter of the screw rod (21), and the centers thereof are located on the same straight line. The inner wall of the threaded barrel (22) is engraved with an internal thread that matches the screw rod (21).

6. The long fiber automatic cutting device according to claim 1, characterized in that: The top and bottom of the second roller groove (3) are fixedly connected to the second guide rail (23), each pair of the bearing holders (12) are located in the second roller groove (3), and their height is equal to the height of the second roller groove (3), and the top and bottom surfaces of each pair of the bearing holders (12) are provided with grooves with a width equal to that of the second guide rail (23).

7. The long fiber automatic cutting device according to claim 1, characterized in that: The roller body of the cutting roller (8) is provided with long strip blades, the long strip blades are spirally distributed on the roller body of the cutting roller (8), and the distance between every two adjacent long strip blades is equal.

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