Sealing structure of separator roller

Abstract

The utility model relates to a sealing structure of a separator roller. The yarn guide roller comprises a yarn guide roller body which is provided with an inner hole penetrating in the axial direction of the yarn guide roller body. The shaft assembly comprises a first bearing and a second bearing which are arranged at the two ends of the inner hole respectively, a mandrel rotationally connected to the first bearing and the second bearing, and a shaft sleeve arranged outside the mandrel in a sleeving mode. The dustproof ring is arranged at one axial end of the inner hole and close to the first bearing, and the mandrel penetrates through the dustproof ring; the full-sealing cover is arranged at the other axial end of the inner hole and is close to the second bearing; the dustproof ring is provided with a sealing step, the sealing step extends between the shaft sleeve and the first bearing, and a first radial dustproof sealing gap and a second radial dustproof sealing gap are formed between the sealing step and the outer circle of the shaft sleeve and the outer circle of the mandrel respectively. A first end face dustproof sealing gap and a second end face dustproof sealing gap are formed between the end face of the sealing step and the end faces of the shaft sleeve and the bearing respectively. The dustproof sealing effect of the dustproof ring is greatly enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of textile machinery, in particular to a sealing structure of a wire splitting roller. Background Art

[0002] In the spinning process of chemical fiber filaments with different specifications and varieties, in order to obtain different texture effects, processes such as drafting, false twisting, and twisting are adopted to produce chemical fiber yarns with diverse styles and wide applications. As a key high-speed rotating component, the wire splitting roller is widely used in textile machinery in these processes, and its main functions include guiding and drafting of yarns, isolating yarns to prevent entanglement, and controlling yarn tension. Therefore, the wire splitting roller belongs to a key high-speed rotating component in textile machinery. Since the wire splitting roller operates at high speed for a long time, in order to ensure the stability of processing quality and extend its service life, it is necessary to stop the machine regularly for maintenance.

[0003] At present, there are two structural forms of wire splitting rollers on the market: one is an integral bearing structure using shell-connected grooves and shaft-connected grooves, and the other is a structure using rolling bearings. The structural feature of these two wire splitting roller products is that a metal dust-proof ring is used for dust-proof sealing on the left side of bearing B (i.e., the bearing end with a handle structure), and the dust-proof ring is in interference fit with the wire guiding roller, and there is a gap between the shaft and the shaft sleeve. On the right side of bearing A (i.e., the right bearing end), a fully enclosed sealing structure is usually adopted, and the material is generally metal or plastic.

[0004] However, although the dust-proof ring is adopted in the sealing structure of the wire splitting roller in the prior art, due to its relatively simple sealing structure, it usually relies on a single-layer sealing structure for dust prevention. Therefore, under high-speed rotation conditions, the sealing effect is limited, and it is easy for external dust to enter the bearing inner cavity, thereby affecting the service life and operating stability of the bearing. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the problem of insufficient dust-proof effect of the dust-proof ring in the sealing structure of the wire splitting roller in the prior art.

[0006] To solve the above technical problem, the utility model provides a sealing structure of a wire splitting roller, including:

[0007] A wire guiding roller, provided with an inner hole penetrating along its axial direction;

[0008] A shaft assembly, including a first bearing, a second bearing respectively arranged at both ends of the inner hole, a core shaft rotatably connected between the first bearing and the second bearing, and a shaft sleeve sleeved outside the core shaft;

[0009] A dust-proof ring, arranged at one axial end of the inner hole and close to the first bearing, and the core shaft penetrates through the dust-proof ring;

[0010] A full cover, which is arranged at the other axial end of the inner hole and close to the second bearing;

[0011] Wherein, the dust-proof ring is provided with a sealing step, the sealing step extends into the space between the shaft sleeve and the first bearing, a first radial dust-proof sealing gap and a second radial dust-proof sealing gap are respectively formed between the sealing step and the outer circles of the shaft sleeve and the mandrel, and a first end face dust-proof sealing gap and a second end face dust-proof sealing gap are respectively formed between the end face of the sealing step and the end faces of the shaft sleeve and the bearing.

[0012] In an embodiment of the present invention, the dust-proof ring includes a connecting disk body connected to the sealing step, and one radial end of the connecting disk body is in interference fit with the inner hole.

[0013] In an embodiment of the present invention, grease injection puncture structures are provided on both the connecting disk body and the end face of the full cover, the grease injection puncture structures are close to the axial side of the grease injection gap of the first bearing and / or the second bearing, and the grease injection puncture structures can be punctured by a grease injection syringe to inject lubricating grease into the first bearing and the second bearing.

[0014] In an embodiment of the present invention, the grease injection puncture structure includes multiple groups of pits arranged on the outer side wall of the connecting disk body and / or the full cover, and the pits make the outer side wall of the connecting disk body and / or the full cover form a thin wall.

[0015] In an embodiment of the present invention, the shape of the pit includes a cone and / or a semi-circle and / or a circumferentially spaced groove.

[0016] In an embodiment of the present invention, the first bearing and / or the second bearing includes an inner ring and an outer ring, the inner ring is sleeved on the mandrel, and the outer ring is in interference fit with the inner hole.

[0017] In an embodiment of the present invention, the first bearing and / or the second bearing includes rollers respectively contacting the mandrel and the inner hole and a roller cage located on one axial side of the rollers.

[0018] In an embodiment of the present invention, the material of the dust-proof ring and / or the full cover is a non-metallic material.

[0019] In an embodiment of the present invention, the material of the dust-proof ring and / or the full cover includes polypropylene, polyethylene, polyvinyl chloride or other non-metallic materials.

[0020] In an embodiment of the present invention, an installation flange that abuts against the inner hole extends radially from the peripheral end of the full cover.

[0021] The above technical solution of the present utility model has the following advantages compared with the prior art:

[0022] For a sealing structure of a wire splitting roller of the present utility model, by arranging a sealing step on the dust-proof ring, multiple layers of radial and end face dust-proof sealing gaps are formed between the dust-proof ring, the shaft sleeve, the core shaft and the first bearing, greatly enhancing the dust-proof sealing effect of the dust-proof ring, effectively preventing external dust from entering the bearing inner cavity, and thus improving the service life and operation stability of the bearing.

[0023] The present utility model is provided with a grease injection puncture structure at the end faces of the dust-proof ring and the full cover. This structure can be punctured by a grease injection syringe to inject grease into the first bearing and the second bearing respectively. Through this design, the injection of grease is more uniform, the grease injection hole can automatically close after pulling out the syringe, ensuring the sealing effect, and the grease injection position is accurate and the grease injection amount is controllable, enabling the maintained product to be directly used and reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to specific embodiments of the present utility model in conjunction with the drawings.

[0025] Figure 1 FIG. 1 is a first schematic structural diagram of the sealing structure of the wire splitting roller of the present utility model.

[0026] Figure 2 FIG. 2 is Figure 1 a partial enlarged schematic structural diagram of FIG. 1.

[0027] Figure 3 FIG. 3 is a second schematic structural diagram of the sealing structure of the wire splitting roller of the present utility model.

[0028] Figure 4 FIG. 4 is a third schematic structural diagram of the sealing structure of the wire splitting roller of the present utility model.

[0029] Figure 5 FIG. 5 is a fourth schematic structural diagram of the sealing structure of the wire splitting roller of the present utility model.

[0030] DESCRIPTION OF THE REFERENCE NUMERALS IN THE DRAWINGS:

[0031] 1. wire guiding roller; 11. inner hole; 111. tapered circular inner tapered hole

[0032] 2. shaft assembly; 21a. first bearing; 21b. second bearing; 211. inner ring; 212. outer ring; 213. roller; 214. roller cage; 22. core shaft; 23. shaft sleeve

[0033] 3. Dust-proof ring; 31. Sealing step; 32. Connecting disk body; 33. First radial dust-proof sealing gap; 34. Second radial dust-proof sealing gap; 35. First end face dust-proof sealing gap; 36. Second end face dust-proof sealing gap;

[0034] 4. Full cover; 41. Mounting flange

[0035] 5. Grease injection puncture structure; 51. Pit; 52. Thin wall. Detailed implementation manners

[0036] The following further illustrates the present utility model in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the specific embodiments cited are not intended to limit the present utility model.

[0037] In the present utility model, when directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present utility model, rather than indicating or implying that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model.

[0038] In the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding" do not include the present number; understandings such as "above", "below", "within" include the present number. In the description of the present utility model, if "first" and "second" are described, they are only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0039] In the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected" should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, and can also be integrally formed; they can be mechanically connected, or electrically connected or capable of communicating with each other; they can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meaning of the above words in the present utility model in combination with the specific content of the technical solution.

[0040] Refer to Figure 1 、 Figure 2 As shown, a sealing structure of a filament splitting roller in an embodiment of the present utility model includes:

[0041] A wire guiding roller 1 is provided with an inner hole 11 penetrating along its axial direction;

[0042] The shaft assembly 2 includes a first bearing 21a and a second bearing 21b respectively arranged at both ends of the inner hole 11, a mandrel 22 rotatably connected to the first bearing 21a and the second bearing 21b, and a bushing 23 sleeved outside the mandrel 22;

[0043] The dust-proof ring 3 is arranged at one axial end of the inner hole 11 and close to the first bearing 21a, and the mandrel 22 passes through the dust-proof ring 3;

[0044] The full cover 4 is arranged at the other axial end of the inner hole 11 and close to the second bearing 21b;

[0045] Wherein, the dust-proof ring 3 is provided with a sealing step 31, the sealing step 31 extends into the space between the bushing 23 and the first bearing 21a, a first radial dust-proof sealing gap 33 and a second radial dust-proof sealing gap 34 are respectively formed between the sealing step 31 and the outer circles of the bushing 23 and the mandrel 22, and a first end-face dust-proof sealing gap 35 and a second end-face dust-proof sealing gap 36 are respectively formed between the end face of the sealing step 31 and the end faces of the bushing 23 and the bearing.

[0046] By arranging the sealing step 31 on the dust-proof ring 3, multiple layers of extended radial and end-face dust-proof sealing gaps are formed between the dust-proof ring 3, the bushing 23, the mandrel 22 and the first bearing 21a, greatly enhancing the dust-proof sealing effect of the dust-proof ring 3, effectively preventing external dust from entering the bearing inner cavity, thereby improving the service life and operation stability of the bearing. The cooperation between the mandrel 22 and the bushing 23 is as Figures 1 to 5 shown, and there are four different cooperation forms.

[0047] In one embodiment, the dust-proof ring 3 includes a connecting disk body 32 connected to the sealing step 31, and the radial end of the connecting disk body 32 is in interference fit with the inner hole 11.

[0048] In one embodiment, grease injection puncture structures are arranged on the end faces of the connecting disk body 32 and the full cover 4, the grease injection puncture structures are close to the axial side of the grease injection gap (the gap reserved between the inner ring 211 and the outer ring 212 of the bearing)) of the first bearing 21a and / or the second bearing 21b, and the grease injection puncture structures can be punctured by a grease injection syringe to inject lubricating grease into the first bearing 21a and the second bearing 21b.

[0049] By arranging the grease injection syringe to puncture the grease injection puncture structures, lubricating grease can be injected into the two bearings respectively. By rotating the bushing 23 (manually or mechanically), the grease addition is more uniform. When the grease injection syringe is pulled out, the punctured grease injection holes close automatically, ensuring the dust-proof effect, and the grease injection position is accurate and the grease injection quantity is controllable. The maintained product can be used directly, reducing the maintenance cost.

[0050] Specifically, the grease injection puncture structure includes multiple groups (more than two) of pits 51 provided on the outer sidewall of the connected disk body 32 and / or the full cover 4, and the pits 51 form a thin wall 52 on the outer sidewall of the connected disk body 32 and / or the full cover 4.

[0051] Specifically, the shape of the pits 51 includes conical and / or semi-circular and / or annularly spaced grooves. It is convenient to be punctured without affecting the structural strength.

[0052] In one embodiment, referring to Figure 4 、 Figure 5 as shown, the first bearing 21a and / or the second bearing 21b includes an inner ring 211 and an outer ring 212. The inner ring 211 is sleeved on the mandrel 22, and the outer ring 212 is in interference fit with the inner hole 11.

[0053] In one embodiment, referring to Figure 1 、 Figure 3 as shown, the inner hole 11 is provided with a tapered circular inner cone hole 111 that expands outward and is conical near the dust-proof ring 3 side. The first bearing 21a and / or the second bearing 21b includes rollers 213 that are respectively in contact with the mandrel 22 and the inner hole 11, and a roller cage 214 (or retaining ring) located on one axial side of the rollers 213.

[0054] In one embodiment, the material of the dust-proof ring 3 and / or the full cover 4 is a non-metallic material. It can be polypropylene, polyethylene, polyvinyl chloride or other non-metallic materials. It not only makes the sealing structure light and easy to process, but also has good chemical corrosion resistance and waterproof performance, meeting the requirements of different working conditions.

[0055] In one embodiment, the peripheral end of the full cover 4 radially extends an installation flange that abuts against the inner hole 11. It increases the installation stability of the sealing structure, helps to maintain the tightness of the seal during high-speed operation, and further enhances the dust-proof effect and the reliability of the bearing.

[0056] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A sealing structure for a wire separation roller, characterized in that: include: The guide roller (1) is provided with an inner hole (11) penetrating along its axial direction; A shaft assembly (2) comprising a first bearing (21a) and a second bearing (21b) respectively disposed at two ends of the inner hole (11), a core shaft (22) rotatably connected to the first bearing (21a) and the second bearing (21b), and a shaft sleeve (23) sleeved outside the core shaft (22); A dust ring (3) is arranged at one axial end of the inner hole (11) and close to the first bearing (21a), and the core shaft (22) passes through the dust ring (3); A full cover (4) is arranged at the other axial end of the inner hole (11) and close to the second bearing (21b); The dust ring (3) is provided with a sealing step (31), the sealing step (31) extends between the shaft sleeve (23) and the first bearing (21a), and the sealing step (31) forms a first radial dustproof sealing gap (33) and a second radial dustproof sealing gap (34) with the outer circles of the shaft sleeve (23) and the core shaft (22), respectively; the end faces of the sealing step (31) form a first end face dustproof sealing gap (35) and a second end face dustproof sealing gap (36) with the end faces of the shaft sleeve (23) and the bearing, respectively.

2. A sealing structure for a wire separation roller according to claim 1, characterized in that: The dustproof ring (3) comprises a connecting disc body (32) connected to the sealing step (31), and a radial end of the connecting disc body (32) is interference-fitted with the inner hole (11).

3. A sealing structure for a wire separation roller according to claim 2, characterized in that: The end surfaces of the connecting disc body (32) and the full cover (4) are both provided with grease injection puncturing structures, the grease injection puncturing structures being close to one axial side of the grease injection gap of the first bearing (21a) and / or the second bearing (21b), and the grease injection puncturing structures being capable of being punctured by a grease injection syringe to inject grease into the first bearing (21a) and the second bearing (21b).

4. A sealing structure for a wire separation roller according to claim 3, characterized in that: The fat injection puncturing structure comprises a plurality of groups of recesses (51) arranged on the outer side wall of the connected disc body (32) and / or the full cover (4), wherein the recesses (51) form a thin wall (52) on the outer side wall of the connected disc body (32) and / or the full cover (4).

5. The sealing structure of a wire separation roller according to claim 4, characterized in that: The shape of the pits (51) includes conical and / or semicircular and / or circumferentially spaced grooves.

6. The sealing structure of a wire separation roller according to claim 1, characterized in that: The first bearing (21a) and / or the second bearing (21b) comprises an inner ring (211) and an outer ring (212); the inner ring (211) is sleeved on the core shaft (22); and the outer ring (212) is interference fit with the inner hole (11).

7. The sealing structure of a wire separation roller according to claim 1, characterized in that: The first bearing (21a) and / or the second bearing (21b) comprises a roller (213) respectively contacting the core shaft (22) and the inner hole (11), and a roller retainer (214) located on one axial side of the roller (213).

8. The sealing structure of a wire separation roller according to claim 1, characterized in that: The dustproof ring (3) and / or the full sealing cover (4) are made of non-metallic material.

9. The sealing structure of a wire separation roller according to claim 1, characterized in that: The material of the dustproof ring (3) and / or the full sealing cover (4) includes non-metallic material.

10. The sealing structure of a wire separation roller according to claim 1, characterized in that: A mounting flange radially extends from the peripheral end of the full cover (4) and abuts against the inner hole (11).

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