Flexible separator roller and roller wire feeding structure

By designing a flexible filament splitting roller, the problem of asynchronous speeds between the splitting roller and the skin roller was solved, improving the production efficiency and quality of fine denier filaments and achieving convenient lubrication and protection functions.

CN223561788UActive Publication Date: 2025-11-18SUZHOU LORRAINE MAG MASCH TECH CO LTD
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Patent Information

Application Number
CN202423072428.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2025-11-18
Estimated Expiration
2034-12-12

AI Technical Summary

Technical Problem

During the filament feeding process of the texturing machine, the asynchronous speed between the splitting roller and the skin roller leads to a decrease in filament quality, which is particularly noticeable when the fineness is ≤30 Denier, affecting the filament drawing effect.

Method used

It adopts a flexible yarn splitting roller design, including a rotating body, connecting shaft, bearing and bearing housing. The rotating body rotates synchronously with the inner ring of the bearing. It is equipped with a U-shaped yarn feeding groove and oiling channel, and a protective cover to prevent yarn from running out and tangling. Abnormal speed is monitored in real time through identification marks.

Benefits of technology

It improves the flexibility of the splitting roller, avoids the problem of speed asynchrony, ensures the normal production of fine denier yarn, reduces the starting torque, and achieves convenient lubrication and protection against yarn breakage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a flexible separator roller and a roller wire feeding structure. The flexible separator roller comprises a rotating body, a connecting shaft, a bearing and a bearing seat, the bearing is fixedly arranged on the bearing seat, the outer ring of the bearing seat is fixedly combined with the bearing seat, the inner ring of the bearing seat can rotate freely, the connecting shaft is fixedly combined with the inner ring of the bearing and the rotating body, and the connecting shaft is fixedly connected with the rotating body. The connecting shaft, the rotating body and an inner ring of the bearing can rotate synchronously, baffles are further fixedly arranged at the two ends of the rotating body, and a wire moving groove for wire moving is defined by the two baffles and the peripheral surface of the rotating body. The rotating body and the inner ring of the bearing rotate synchronously, the starting torque of the rotating body is reduced, the flexibility of the separator roller is greatly improved, and the problem that fine denier filaments and the separator roller are not synchronous in speed is solved.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model relates to a flexible type silk separating roller and roller silk feeding structure, belong to chemical fiber elastic technology field. BACKGROUND

[0002] In recent years, quite a part of manufacturers in chemical fiber elastic industry begin to produce superfine denier product (specially made denier silk of 30 Denier or less) with higher added value. On the feeding roller of the elasticizer, the silk winding between the skin roller and the silk separating roller drives the silk to move, and the speed synchronization of the silk separating roller and the skin roller is required very high. When the silk denier (quantitative standard of silk thickness) is 30 Denier or less, the silk separating roller is driven by the silk with too small force, and the silk separating roller cannot be driven. The speed asynchronization phenomenon is serious, which can cause silk drafting between the skin roller and the silk separating roller, and affect the silk quality. SUMMARY

[0003] The main purpose of the utility model is to provide a flexible type silk separating roller and roller silk feeding structure, so as to overcome the defects in the prior art.

[0004] In order to achieve the above-mentioned purpose of the utility model, the technical scheme adopted by the utility model comprises:

[0005] The utility model embodiment provides a flexible type silk separating roller, which comprises a rotating main body, a connecting shaft, a bearing and a bearing seat, the bearing is fixedly arranged on the bearing seat, the outer ring of the bearing seat is fixedly combined with the bearing seat, the inner ring of the bearing seat is freely rotatable, the connecting shaft is fixedly combined with the inner ring of the bearing and the rotating main body respectively, the connecting shaft, the rotating main body and the inner ring of the bearing can rotate synchronously, and the two ends of the rotating main body are also fixedly provided with baffles, and the walking groove for the silk is formed between the two baffles and the outer peripheral surface of the rotating main body.

[0006] The second aspect of the utility model embodiment provides a roller silk feeding structure, which comprises a roller frame, a roller roller, a skin roller frame, a skin roller and a silk separating roller, the roller roller is arranged on the roller frame and can rotate, the skin roller frame is installed on the roller frame, the skin roller and the silk separating roller are arranged on the skin roller frame and can rotate independently, the rotating surface of the skin roller is in close contact with the rotating surface of the roller roller, and the skin roller can be driven to rotate by the roller roller, wherein the silk separating roller is the flexible type silk separating roller, and the bearing seat is fixedly arranged on the skin roller frame.

[0007] Compared with the prior art, the utility model has the advantages of:

[0008] This utility model embodiment provides a flexible filament splitting roller, in which the rotating body and the inner ring of the bearing rotate synchronously, reducing the starting torque of the rotating body. The flexibility of the filament splitting roller is greatly improved, avoiding the problem of asynchronous speed between fine denier filaments and the filament splitting roller.

[0009] This utility model embodiment provides a flexible wire separating roller with a U-shaped wire feeding groove and protruding ends to prevent the wire from running out of the wire separating roller from both ends;

[0010] This utility model embodiment provides a flexible wire splitting roller with an oiling hole on the bearing seat, which can realize the re-lubrication of the wire splitting roller;

[0011] This utility model embodiment provides a flexible wire splitting roller equipped with a protective cover, which can effectively prevent the wire from getting tangled inside the wire splitting roller when the wire breaks;

[0012] This utility model embodiment provides a flexible filament splitting roller with an identification mark at the end of its rotating body. If the filament splitting roller malfunctions and its rotation speed is too low, it can be detected visually in a timely manner. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 a , Figure 1 b This is a schematic diagram of the structure of a conventional filament splitting roller in the prior art;

[0015] Figure 2 This is a schematic diagram of a roller feeding structure provided in a typical embodiment of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of a flexible filament splitting roller provided in a typical embodiment of this utility model;

[0017] Figure 4 This is a side view of a flexible filament splitting roller provided in a typical embodiment of this utility model;

[0018] Figure 5 yes Figure 4 A cross-sectional view of a flexible filament splitting roller formed along BB;

[0019] Figure 6 yes Figure 4 A cross-sectional view of a flexible splitting roller formed along BB. DETAILED DESCRIPTION

[0020] In view of the deficiencies in the prior art, the present inventors have long studied and practiced to come up with the technical solution of the present application. The technical solution, its implementation process and principles will be further explained as follows.

[0021] The flexible filament separating roller provided by the embodiment of the present application comprises a rotating main body, a connecting shaft, a bearing and a bearing seat, the bearing is fixedly arranged on the bearing seat, the outer ring of the bearing seat is fixedly combined with the bearing seat, the inner ring of the bearing seat is freely rotatable, the connecting shaft is fixedly combined with the inner ring of the bearing and the rotating main body respectively, the connecting shaft, the rotating main body and the inner ring of the bearing can rotate synchronously, and the two ends of the rotating main body are further fixedly provided with baffles, and the two baffles and the outer peripheral surface of the rotating main body form a wire running groove for wire running.

[0022] Further, the wire running groove is an annular structure continuously extending along the circumference of the rotating main body, the outer peripheral surface of the rotating main body is a cylindrical surface, and the outer peripheral surface of the rotating main body serves as the groove bottom surface of the wire running groove.

[0023] Further, the baffle is an annular structure continuously extending along the circumference of the rotating main body, the angle between the side surface of the baffle facing the wire running groove and the outer peripheral surface of the rotating main body is an obtuse angle, and the side surface of the baffle facing the wire running groove serves as the groove wall of the wire running groove.

[0024] Further, the rotating main body is a cylindrical structure with one end open and the other end closed, the two baffles are arranged at the closed end and the open end of the rotating main body respectively, the bearing and the fixed part of the bearing seat are arranged in a first cavity inside the rotating main body, the connecting shaft is fixedly combined with the closed end of the rotating main body, and there is no direct contact between the bearing seat, the bearing and the rotating main body.

[0025] Further, the end surface of the closed end of the rotating main body and / or the side surface of the baffle fixed on the closed end of the rotating main body, which faces away from the wire running groove, is further provided with an identification mark.

[0026] Further, the bearing seat has a first assembly section and a second assembly section arranged in sequence along the axial direction of the bearing seat, the inside of the first assembly section has a second cavity, the bearing is arranged in the second cavity, the outer ring of the bearing is fixedly matched with the side wall of the second cavity, the first assembly section is arranged inside the first cavity, the outer diameter of the first assembly section is smaller than the inner diameter of the first cavity, and the second assembly section is arranged outside the first cavity.

[0027] Further, the second hole cavity comprises a first hole section and a second hole section arranged in sequence, the second hole section is located between the first hole section and the second assembly section, the inner diameter of the second hole section is smaller than the inner diameter of the first hole section, the first hole section is directly communicated with the open port of the second hole cavity, the bearing is coaxially arranged in the first hole section, the outer diameter of the inner ring of the bearing < the inner diameter of the second hole section < the outer diameter of the outer ring of the bearing;

[0028] In addition, the bearing seat is further provided with an oil filling hole, and the surface of the second assembly section is further provided with an oil filling port, the oil filling hole is respectively communicated with the oil filling port and the second hole section.

[0029] Further, the inner diameter of the second hole section = the inner diameter of the outer ring of the bearing.

[0030] Further, the first hole section and the second hole section are coaxially arranged.

[0031] In a more specific embodiment, the flexible type of wire separating roller further comprises: a protective cover fixedly arranged on the second assembly section of the bearing seat, and a groove structure arranged on the end surface of the rotating body facing the protective cover, at least part of the baffle at the open end of the rotating body is arranged in the groove structure, the wire groove does not overlap with the groove structure, and the baffle at the open end of the rotating body and the rotating body are not in direct contact with the protective cover.

[0032] Further, the outer diameter of the first assembly section is greater than the outer diameter of the second assembly section, and the first assembly section and the second assembly section have a stepped structure, and the end surface of the rotating body facing the protective cover is tightly attached to the stepped surface of the stepped structure.

[0033] Further, the circumferential side surface of the protective cover is a circular truncated cone surface, and the outer diameter of the protective cover gradually decreases in the direction of the rotating body.

[0034] Further, the rotating body, the connecting shaft, the bearing, the bearing seat and the protective cover are coaxially arranged.

[0035] The second aspect of the embodiment of the utility model provides a roller wire feeding structure, which comprises: a roller frame, a roller, a rubber roller frame, a rubber roller and a wire separating roller, the roller is arranged on the roller frame and can rotate, the rubber roller frame is installed on the roller frame, the rubber roller and the wire separating roller are arranged on the rubber roller frame and can independently rotate, the rotating surface of the rubber roller is in close contact with the rotating surface of the roller, and the rubber roller can be driven to rotate by the roller, wherein the wire separating roller is the flexible type of wire separating roller, and the bearing seat is fixedly arranged on the rubber roller frame.

[0036] The technical solutions, implementation processes and principles of the present application will be further explained in combination with the accompanying drawings and specific implementation cases. Unless specifically stated, the roller, leather roller and bearing used in the embodiments of the present application are known in the art and can be obtained by market purchase. The rotating main body, bearing seat and shield in the embodiments of the present application can be obtained by known customization process in the art, and are not specifically limited here.

[0037] Please refer to Figure 2 A roller feeding structure includes a roller frame, a roller roller 300, a leather roller frame 200, a leather roller 400 and a filament roller 500. The roller frame includes a roller beam 110, a leather roller frame base 120 and a roller support seat 130. The leather roller frame base 120 and the roller support seat 130 are fixedly installed on the roller beam 110. The roller roller 300 is rotatably installed on the roller support seat 130. The leather roller frame 200 is installed on the leather roller frame base 120. The leather roller 400 and the filament roller 500 are independently installed on the leather roller frame 200. The leather roller 400 and the filament roller 500 are rotatable. The rotating surface of the leather roller 400 is in close contact with the rotating surface of the roller roller 300 under the action of the downward pressure provided by the leather roller frame 200. The rotating surface of the leather roller 400 is made of rubber. The roller roller 300 is directly connected with the motor and can rotate under the driving of the motor. The leather roller 400 rotates under the driving of the friction force between the leather roller 400 and the roller roller 300. When the roller feeding structure works, the yarn 1 passes through the leather roller 400, winds two to three turns between the leather roller 400 and the filament roller 500, and is then introduced from the leather roller to the subsequent process. In the operation of the roller feeding structure, the roller roller 300 drives the leather roller 400 to rotate synchronously. The yarn tension between the leather roller 400 and the filament roller 500 drives the filament roller 500 to rotate.

[0038] Specifically, please refer to Figures 3-6The split roller comprises a rotating body 510 coaxially arranged, two baffles 520, a connecting shaft 530, two bearings 540 and a bearing seat 550. The two baffles 520 are fixedly sleeved at two ends of the rotating body 510 respectively. A wire running groove 511 is enclosed between the two baffles 520 and the outer circumferential surface of the rotating body 510. The rotating body 510 is sleeved outside the bearing seat 550. The two bearings 540 are fixedly installed on the bearing seat 550. The outer rings of the two bearings 540 are fixedly connected with the bearing seat 550. The connecting shaft 530 is fixedly connected with the inner rings of the two bearings 540 and the rotating body 510. The rotating body 510, the connecting shaft 530 and the inner rings of the two bearings 540 can synchronously rotate. By fixing the rotating body 510 with the inner rings of the two bearings 540 through the connecting shaft 530 and synchronously rotating with the inner rings of the two bearings 540, compared with the scheme that the rotating body 510 is fixed with the outer rings of the two bearings 540 and rotates with the outer rings, the starting torque of the rotating body 510 of the utility model is lower, and the rotating body 510 is more easily driven by the wire tension between the skin roller and the split roller, so that finer wire production can be adapted. Specifically, the rotating body can be made of a lightweight material known in the art.

[0039] Specifically, the rotating body 510 is a cylindrical structure with one end open and the other end closed. The two baffles 520 are arranged at the closed end and the open end of the rotating body 510 respectively. The outer circumferential cylindrical surface of the rotating body 510 serves as the groove bottom surface of the wire running groove 511. The side surface of the two baffles 520 facing each other serves as the groove wall of the wire running groove 511. The two baffles 520 and the rotating body 510 enclose the U-shaped wire running groove 511, which can prevent the wire from escaping from the wire running groove 511 to a certain extent. Specifically, in order to increase the volume of the wire running groove 511 and reduce the wear between the wire running groove 511 and the wire, the angle between the side surface of the baffle 520 facing the wire running groove and the outer circumferential surface of the rotating body 510 is obtuse, that is, the groove bottom surface of the wire running groove 511 is inclined towards the two ends of the rotating body 510.

[0040] Specifically, the end face of the closed end of the rotating body 510 and / or the side face of the baffle 520 fixed at the closed end of the rotating body 510 facing away from the wire running groove 511 is further provided with an identification mark 513. Through the identification mark 513, the rotational speed change of the rotating body 510 can be visually observed, so as to timely cope with the problem of excessively low rotational speed caused by the abnormality of the split roller. Exemplarily, the identification mark 513 can be various graphic marks, such as a cross-shaped mark.

[0041] It can be understood that the two baffles 520 are both annular structures, the wire groove 511 is an annular structure continuously extending along the circumference of the rotating body 510, and the outer circumferential surface of the rotating body 510 is a cylindrical surface. Specifically, the baffles 520 can be fixed by being sleeved on the rotating body 510, or can be fixed to the rotating body 510 by adhesion or other fixed connection. Of course, the two baffles 520 can also be integrally arranged with the rotating body 510, that is, the baffles 520 can be regarded as parts of the rotating body 510 protruding in the radial direction of the rotating body 510.

[0042] Specifically, the rotating body 510 has a first cavity 512 inside, the first cavity 512 is in communication with the open end of the rotating body 510, the bearing seat 550 has a first assembly section 521 and a second assembly section 522 arranged in sequence along the axial direction of the bearing seat 550, the first assembly section 521 has a second cavity inside, the end face of the second cavity opposite to the second assembly section 522 is in communication, and the two bearings 540 are fixedly arranged in the second cavity. The first assembly section 521 of the bearing seat 550 is arranged in the first cavity 512 of the rotating body 510, and the bearing seat 550 and the rotating body 510 are not in direct contact. The rotating body 510 and the bearing seat 550 are fixed and supported by the bearing 540 and the connecting shaft 530. The connecting shaft 530 is fixedly combined with the closed end of the rotating body 510. It can be understood that the bearing seat 550 and the rotating body 510 are gap-fitted, the second assembly section 522 is arranged outside the first cavity 512, and the second assembly section 522 is fixedly connected with the cover roller frame.

[0043] Specifically, the bearing 540 is arranged in the second cavity, the outer ring of the bearing 540 is fixedly fitted with the side wall of the second cavity, the first assembly section 521 is arranged inside the first cavity 512, the outer diameter of the first assembly section 521 is smaller than the inner diameter of the first cavity 512, and the second assembly section 522 is arranged outside the first cavity 512. It can be understood that the outer ring of the bearing 540 is slightly smaller than the inner diameter of the second cavity, and the surface of the outer ring of the bearing 540 is in close contact with the inner wall of the second cavity. For example, the bearing 540 and the bearing seat 550 are interference-fitted, the outer diameter of the first assembly section 521 of the bearing seat 550 is smaller than the inner diameter of the first cavity 512, and a gap is formed between the first assembly section 521 and the first cavity 512.

[0044] Specifically, the second hole cavity includes a first hole section and a second hole section 523 arranged in sequence, the second hole section 523 is located between the first hole section and the second assembly section 522, the inner diameter of the second hole section 523 is smaller than that of the first hole section, the first hole section is directly communicated with the open port of the second hole cavity, the bearing 540 is coaxially arranged in the first hole section, the outer diameter of the inner ring of the bearing 540 is < the inner diameter of the second hole section 523 < the outer diameter of the outer ring of the bearing 540, preferably the inner diameter of the second hole section 523 = the inner diameter of the outer ring of the bearing 540, and the bearing seat 550 is further provided with an oil filling hole 524, and the surface of the second assembly section 522 is further provided with an oil filling port 525, and the oil filling hole 524 is respectively communicated with the oil filling port 525 and the second hole section 523. It can be understood that the rolling balls located between the inner ring and the outer ring of the bearing 540 are exposed in the second hole section 523, and the oil filling hole located on the second assembly section 522 outside the first hole cavity 512 can inject lubricating oil into the second hole section 523, and the lubricating oil can flow into the bearing 540, and the lubrication and maintenance of the bearing 540 can be realized, and the whole disassembly of the dividing roller is not required, that is, the maintenance and maintenance are realized without stopping the machine. Exemplarily, the oil filling hole 524 can include a first hole and a second hole communicated in sequence, the first hole extends along the radial direction of the second assembly section 522 and is directly communicated with the oil filling port 525, and the second hole extends along the axial direction of the second assembly section 522 and is directly communicated with the second hole section 523. Through such design, not only oil can be stored in the second hole section 523, but also oil flow leakage can be avoided.

[0045] Specifically, in order to prevent the broken yarn from winding into the inside of the flexible dividing roller when the yarn is broken, the flexible dividing roller further includes a shield 560, the shield 560 is fixedly sleeved on the second assembly section 522 of the bearing seat 550, the shield 560 and the rotating body 510 are arranged in sequence along the axial direction of the bearing seat 550, and a groove-shaped structure 561 is further arranged on the end face of the shield 560 facing the rotating body 510. At least part of the baffle 520 located at the open end of the rotating body 510 is arranged in the groove-shaped structure 561, the wire running groove does not overlap with the groove-shaped structure 561, and the baffle 520 located at the open end of the rotating body 510 and the rotating body 510 are not in direct contact with the shield 560. It can be understood that the groove-shaped structure 561 of the shield 560 is an annular groove continuously arranged along the circumferential direction of the shield 560, and a anti-winding maze structure is formed between the groove-shaped structure 561 of the shield 560, the baffle 520 and the bearing seat 550.

[0046] Specifically, the outer diameter of the first assembly section 521 of the bearing seat 550 is greater than that of the second assembly section 522, and the first assembly section 521 and the second assembly section 522 have a stepped structure, and the end face of the shield 560 facing the rotating body 510 is tightly attached to the stepped face of the stepped structure. More specifically, the circumferential side face of the shield 560 is a circular truncated face, and the outer diameter of the shield 560 gradually decreases along the direction tending to the rotating body 510.

[0047] It should be understood that the above embodiments are only to illustrate the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A flexible slivering roller characterized by, The utility model relates to a rotating body, connecting shaft, bearing and bearing seat, the bearing fixedly arranged on the bearing seat, the outer ring of bearing seat and bearing seat fixed combination, the inner ring of bearing seat can freely rotate, the connecting shaft respectively with the inner ring of bearing, the rotating body fixed combination, the connecting shaft, the rotating body and the inner ring of bearing can synchronous rotation, the both ends of rotating body still fixedly arranged with baffle, two baffle with the outer circumferential surface of rotating body between the enclosure forms the wire slot that can supply wire. The wire slot is an annular structure continuously extending along the circumference of the rotating body, and the outer circumferential surface of the rotating body is a cylindrical surface, which serves as the bottom surface of the wire slot.

2. The flexible slivering roller of claim 1, wherein: The baffle is an annular structure continuously extending along the circumference of the rotating body, and the angle between the side surface of the baffle facing the wire slot and the outer circumferential surface of the rotating body is obtuse, and the side surface of the baffle facing the wire slot serves as the wall of the wire slot.

3. The flexible slivering roller according to claim 1 or 2, characterized in that: The rotating body is a cylindrical structure with one open end and the other closed end, and the two baffles are arranged at the closed end and the open end of the rotating body respectively. The bearing and the fixed part of the bearing seat are arranged in the first cavity inside the rotating body, the connecting shaft is fixedly combined with the closed end of the rotating body, and there is no direct contact between the bearing seat, the bearing and the rotating body.

4. The flexible slivering roller according to claim 1 or 2, characterized in that: The end surface of the closed end of the rotating body and / or the side surface of the baffle fixedly arranged at the closed end of the rotating body facing away from the wire slot are further provided with identification marks.

5. The flexible slivering roller of claim 4, wherein: The bearing seat has a first assembly section and a second assembly section arranged in sequence along its own axial direction. The first assembly section has a second cavity inside. The bearing is arranged in the second cavity. The outer ring of the bearing is fixedly matched with the side wall of the second cavity. The first assembly section is arranged inside the first cavity. The outer diameter of the first assembly section is smaller than the inner diameter of the first cavity. The second assembly section is arranged outside the first cavity.

6. The flexible slivering roller of claim 4, wherein: The second cavity includes a first hole section and a second hole section arranged in sequence. The second hole section is located between the first hole section and the second assembly section. The inner diameter of the second hole section is smaller than the inner diameter of the first hole section. The first hole section is directly communicated with the open end of the second cavity. The bearing is coaxially arranged in the first hole section. The outer diameter of the inner ring of the bearing is smaller than the inner diameter of the second hole section, which is smaller than the outer diameter of the outer ring of the bearing.

7. The flexible slivering roller of claim 6, wherein: The bearing seat further has an oil filling channel arranged inside. The surface of the second assembly section is further provided with an oil filling port. The oil filling channel is communicated with the oil filling port and the second hole section respectively. The inner diameter of the second hole section is equal to the inner diameter of the outer ring of the bearing.

8. The flexible slivering roller of claim 7, wherein: The first hole section and the second hole section are coaxially arranged.

9. The flexible slivering roller of claim 7, wherein: Further includes:

10. The flexible slivering roller of claim 6, wherein, ​ A shroud is fixedly arranged on the second assembly section of the bearing seat, and a groove structure is further arranged on the end surface of the shroud facing the rotating body. At least part of the baffle plate at the open end of the rotating body is arranged in the groove structure, the wire slot does not overlap with the groove structure, and the baffle plate at the open end of the rotating body and the rotating body do not directly contact the shroud.

11. The flexible slivering roller of claim 10, wherein: The outer diameter of the first assembly section is greater than the outer diameter of the second assembly section, and the first assembly section and the second assembly section have a stepped structure. The end surface of the shroud facing the rotating body is tightly attached to the stepped surface of the stepped structure.

12. The flexible slivering roller of claim 11, wherein: The circumferential side surface of the shroud is a circular truncated cone surface, and the outer diameter of the shroud gradually decreases in the direction of the rotating body.

13. The flexible slivering roller of claim 11, wherein: The rotating body, the connecting shaft, the bearing, the bearing seat, and the shroud are coaxially arranged.

14. A roller feed structure characterized in that, Comprise: A roller holder, a roller, a skin roller holder, a skin roller, and a filament splitter, the roller is arranged on the roller holder and can rotate, the skin roller holder is installed on the roller holder, the skin roller and the filament splitter are arranged on the skin roller holder and can independently rotate, the rotation surface of the skin roller is in close contact with the rotation surface of the roller, and the skin roller can be driven to rotate by the roller, wherein the filament splitter is the flexible filament splitter in any one of claims 1-13, and the bearing seat is fixedly arranged on the skin roller holder.