Sealing type thread spinner bearing
By designing sealing components with inner and outer retaining rings on textile machine bearings, combined with grease reservoir grooves and tapered guide rings, the problems of lint ingress and difficulty in adding grease are solved, achieving efficient sealing and lubrication of the bearings, extending service life and reducing maintenance frequency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-09
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional textile machine bearings have problems with the entry of flying lint and the difficulty of adding grease, which affects the rotation performance and maintenance efficiency of the bearings.
Design a sealed textile machine bearing that uses an inner and outer retaining ring sealing assembly, combined with a grease reservoir groove and a tapered guide ring, to achieve the blocking of flying fluff and efficient replenishment of lubricating grease.
It reduces the probability of fluff entering the bearing, simplifies the grease addition process, extends the bearing's service life, and improves rotational smoothness.
Smart Images
Figure CN224093708U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bearing technology, and in particular relates to a sealed textile machinery bearing. Background Technology
[0002] Bearings are a common type of rotating component support part in textile machines. By using bearings, the frictional resistance of rotating components can be reduced, ensuring that the rotating components obtain good rotational accuracy and stable rotational speed.
[0003] Because textile machines generate a large amount of lint during operation, those skilled in the art typically install dust guards on the bearings to reduce the probability of lint entering the bearings. However, traditional dust guards have limited lint-blocking effectiveness; in actual use, lint still enters the bearings, affecting their rotation. Furthermore, due to the high speeds of rotating parts in textile machines, regular grease needs to be added to the bearings. Installing traditional dust guards makes grease addition more difficult, requiring operators to disassemble the dust guards to inject grease into the bearings. This reduces the efficiency of daily bearing maintenance, potentially leading to prolonged downtime for the textile machine. Utility Model Content
[0004] In view of this, the present invention aims to provide a sealed textile machinery bearing to solve the above-mentioned technical problems.
[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0006] A sealed textile machinery bearing includes a bearing body, the bearing body comprising: an inner bearing ring, an outer bearing ring, and a cage, the inner bearing ring being placed inside the outer bearing ring, the cage being disposed between the inner bearing ring and the outer bearing ring, a plurality of rolling elements being disposed on the cage, and raceways for accommodating the rolling elements being provided on both the outer side wall of the inner bearing ring and the inner side wall of the outer bearing ring.
[0007] The sealed textile machinery bearing further includes two sealing components, which are respectively disposed at both ends of the bearing body. Each sealing component includes an inner retaining ring and an outer retaining ring. The inner retaining ring is detachably disposed on the end face of the inner ring of the bearing. An assembly groove is provided on the inner sidewall of the outer ring of the bearing, and the outer diameter of the inner retaining ring is equal to the inner diameter of the assembly groove. The outer retaining ring is detachably disposed on the end face of the outer ring of the bearing. The inner diameter of the outer retaining ring is smaller than the outer diameter of the inner retaining ring, and the bottom surface of the outer retaining ring contacts the top surface of the inner retaining ring. A grease reservoir groove is provided on the end face of the outer ring of the bearing. Multiple flow guide cuts communicating with the grease reservoir groove are provided on the inner sidewall of the outer ring of the bearing, and the flow guide cuts are located on the side of the inner retaining ring closer to the cage. Multiple first mounting screw holes are also provided on the outer retaining ring, each of which contains a mounting bolt. Multiple second mounting screw holes for accommodating mounting bolts are provided on the bottom surface of the grease reservoir groove.
[0008] Furthermore, a tapered guide ring is provided on the bottom surface of the inner retaining ring, the bottom end of the tapered guide ring extends to below the guide cut, and a guide gap is formed between the tapered guide ring and the inner sidewall of the outer ring of the bearing.
[0009] Furthermore, the bottom surface of the inner retaining ring is provided with a splicing groove for accommodating the end of the bearing inner ring, and the inner diameter of the splicing groove is equal to the outer diameter of the bearing inner ring.
[0010] Furthermore, the inner retaining ring is provided with a plurality of first connecting screw holes, and a connecting bolt is provided inside the first connecting screw holes. Additionally, a plurality of second connecting screw holes for accommodating the connecting bolts are provided on the end face of the bearing inner ring.
[0011] Furthermore, the bottom surface of the outer retaining ring is provided with a sealing ring groove, and the sealing ring groove is filled with sealing grease.
[0012] Furthermore, the top surface of the outer retaining ring is provided with an injection hole, which is connected to the sealing ring groove, and a removable sealing plug is provided in the injection hole.
[0013] Furthermore, a sealing ring is provided on the bottom surface of the outer retaining ring, and the sealing ring is inserted into the grease reservoir groove.
[0014] Furthermore, the inner retaining ring is made of silicone or rubber, and the outer retaining ring is made of metal.
[0015] Compared with the prior art, the sealed textile machinery bearing of this utility model has the following advantages:
[0016] (1) The sealed textile machine bearing of this utility model is provided with sealing components including an inner retaining ring and an outer retaining ring at both ends of the bearing body. The cooperation of the inner and outer retaining rings can effectively seal both ends of the bearing body, thereby reducing the probability of external fluff entering the bearing, extending the life of the textile machine bearing and reducing the maintenance frequency of the textile machine bearing. In addition, since a grease reservoir groove is provided on the end face of the bearing outer ring and multiple first mounting screw holes are provided on the outer retaining ring, when it is necessary to add grease to the bearing, the operator only needs to remove one mounting bolt to inject grease into the grease reservoir groove, and the grease inside the grease reservoir groove can flow smoothly to the periphery of the cage through the guide cut, thereby reducing the difficulty of adding grease and shortening the downtime of the textile machine due to bearing maintenance.
[0017] (2) The sealed textile machinery bearing of this utility model has a tapered guide ring on the bottom surface of the inner retaining ring. By setting the tapered guide ring, the grease near the cage can be prevented from flowing back into the guide cut due to the rotation of the bearing, thus avoiding the bearing from experiencing rotational stiffness or excessive wear due to the backflow of grease. In addition, a sealing ring groove for accommodating sealing grease is also provided on the bottom surface of the outer retaining ring. The sealing grease in the sealing ring groove can not only reduce the friction between the inner and outer retaining rings, but also form a liquid seal effect between the inner and outer retaining rings, further reducing the probability of external flying fluff entering the bearing. Attached Figure Description
[0018] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0019] Figure 1 This is a schematic diagram of the structure of the sealed textile machinery bearing described in an embodiment of the present invention;
[0020] Figure 2 This is an exploded view of the sealed textile machinery bearing described in an embodiment of the present invention;
[0021] Figure 3 This is a cross-sectional view of the sealed textile machine bearing described in an embodiment of the present invention;
[0022] Figure 4 This is a schematic diagram of the structure of the bearing outer ring according to an embodiment of the present invention;
[0023] Figure 5 This is a schematic diagram of the bottom structure of the inner retaining ring according to an embodiment of the present utility model;
[0024] Figure 6 This is a schematic diagram of the bottom structure of the outer retaining ring according to an embodiment of the present utility model.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1-Bearing inner ring; 2-Bearing outer ring; 21-Assembly groove; 22-Grease reservoir groove; 23-Guide cut; 31-Cage; 32-Rolling element; 4-Inner retaining ring; 41-Conical guide ring; 42-Joint groove; 43-First connecting screw hole; 431-Connecting bolt; 5-Outer retaining ring; 51-First mounting screw hole; 511-Mounting bolt; 52-Sealing ring groove; 53-Injection hole; 531-Sealing plug; 54-Sealing ring. Detailed Implementation
[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, 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 utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.
[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0031] A sealed textile machinery bearing, the structure of which can be made of Figures 1-6 For illustrative purposes only. In this embodiment, the sealed textile machine bearing includes a bearing body and two sealing assemblies, with the two sealing assemblies respectively disposed at both ends of the bearing body.
[0032] Similar to common bearings, the bearing body in this embodiment includes an inner ring 1, an outer ring 2, and a cage 31. The inner ring 1 is placed inside the outer ring 2, and the cage 31 is positioned between the inner ring 1 and the outer ring 2. Multiple rolling elements 32 are mounted on the cage 31, and raceways for accommodating the rolling elements 32 are provided on both the outer side wall of the inner ring 1 and the inner side wall of the outer ring 2. During installation, the inner ring 1 should be fitted onto the load-bearing component (e.g., a load-bearing shaft) of the rotating part, and the outer ring 2 should be assembled with the rotating part. During use, the outer ring 2 and the inner ring 1 will rotate relative to each other due to the rotation of the rotating part. At this time, the rolling elements 32 on the cage 31 will begin to rotate, thereby providing good support for the rotating part and enabling the rotating part to achieve a low coefficient of friction, good rotational accuracy, and stable rotational speed.
[0033] To reduce the probability of external fluff entering the bearing body, the sealing assembly in this embodiment includes an inner retaining ring 4 and an outer retaining ring 5. Specifically, the inner retaining ring 4 is detachably mounted on the end face of the inner ring 1 of the bearing, and an assembly groove 21 is provided on the inner sidewall of the outer ring 2 of the bearing, with the outer diameter of the inner retaining ring 4 being equal to the inner diameter of the assembly groove 21. The outer retaining ring 5 is detachably mounted on the end face of the outer ring 2 of the bearing, with the inner diameter of the outer retaining ring 5 being smaller than the outer diameter of the inner retaining ring 4, and the bottom surface of the outer retaining ring 5 contacting the top surface of the inner retaining ring 4. During use, the outer retaining ring 5 will rotate with the outer ring 2 of the bearing. Since the inner diameter of the outer retaining ring 5 is smaller than the outer diameter of the inner retaining ring 4, and the bottom surface of the outer retaining ring 5 is in contact with the top surface of the inner retaining ring 4, the inner retaining ring 4 and the outer retaining ring 5 will have a good blocking effect on the end of the bearing body, thereby reducing the probability of external fluff entering the bearing body, extending the service life of the bearing body, and reducing the maintenance frequency of the bearing body.
[0034] By way of example and not limitation, the inner retaining ring 4 in this embodiment may be made of silicone or rubber, and the outer retaining ring 5 may be made of metal. Operators may also adjust the materials used in the inner retaining ring 4 and the outer retaining ring 5 according to actual needs to meet different usage requirements.
[0035] To facilitate the assembly of the outer retaining ring 5 with the outer ring 2 of the bearing and to allow workers to replenish grease into the bearing body, a grease reservoir groove 22 for storing grease is provided on the end face of the outer ring 2. Multiple guide cuts 23 communicating with the grease reservoir groove 22 are provided on the inner wall of the outer ring 2, and the guide cuts 23 are located on the side of the inner retaining ring 4 near the cage 31. Correspondingly, the outer retaining ring 5 has multiple first mounting screw holes 51, each containing a mounting bolt 511, and multiple second mounting screw holes for accommodating the mounting bolts 511 are provided on the bottom surface of the grease reservoir groove 22. During assembly, the mounting bolts 511 secure the outer retaining ring 5 to the end face of the outer ring 2. When it is necessary to replenish grease into the bearing body, workers can remove any mounting bolt 511 and inject grease into the grease reservoir groove 22 through the first mounting screw hole 51 where that bolt 511 is located, thus reducing the difficulty of replenishing grease. When the bearing body 1 is in operation, it will generate heat due to the friction of rotation. At this time, the fluidity of the grease inside the grease reservoir groove 22 will be increased, so it will flow along the guide cut 23 to the vicinity of the cage 31, thereby enabling the bearing body to obtain a good degree of rotational smoothness.
[0036] Optionally, to improve the sealing effect between the outer retaining ring 5 and the bearing outer ring 2, a sealing ring 54 may be provided on the bottom surface of the outer retaining ring 5. After the outer retaining ring 5 and the bearing outer ring 2 are assembled, the sealing ring 54 will be inserted into the grease reservoir groove 22 to prevent the grease in the grease reservoir groove 22 from leaking out along the gap between the outer retaining ring 5 and the bearing outer ring 2.
[0037] Because the bottom surface of the outer retaining ring 5 is in contact with the top surface of the inner retaining ring 4, the outer retaining ring 5 and the inner retaining ring 4 will rub against each other when the bearing body is working. To reduce frictional loss between the outer retaining ring 5 and the inner retaining ring 4, such as... Figure 6 As shown, in this embodiment, a sealing ring groove 52 may be provided on the bottom surface of the outer retaining ring 5, and the sealing ring groove 52 is filled with sealing grease. By filling with sealing grease, not only can the coefficient of friction between the outer retaining ring 5 and the inner retaining ring 4 be reduced, extending the service life of the device, but a liquid seal area can also be formed between the bottom surface of the outer retaining ring 5 and the top surface of the inner retaining ring 4, further improving the blocking effect of the sealing assembly on external flying fluff.
[0038] Optionally, to facilitate the replenishment of sealing grease into the sealing ring groove 52, the top surface of the outer retaining ring 5 may also be provided with an injection hole 53 that communicates with the sealing ring groove 52, and a removable sealing plug 531 is provided in the injection hole 53, so that the operator can inject the sealing grease into the sealing ring groove 52 through the injection hole 53 and seal the injection hole 53 through the sealing plug 531.
[0039] In actual operation, the high-speed rotation of the bearing body causes the temperature near the cage 31 to rise, and the cage 31 generates significant centrifugal force. Therefore, the grease inside the bearing body may flow back into the grease reservoir 22, resulting in less grease near the cage 31 and thus affecting the lubrication effect of the bearing body. To solve this problem, such as... Figure 3 and Figure 5 As shown, in this embodiment, a tapered guide ring 41 may be provided on the bottom surface of the inner retaining ring 4. After the assembly between the inner retaining ring 4 and the inner ring 1 of the bearing is completed, the bottom end of the tapered guide ring 41 will extend below the guide cut 23, and a guide gap will be formed between the tapered guide ring 41 and the inner wall of the outer ring 2 of the bearing. Since there is a guide gap between the tapered guide ring 41 and the inner wall of the outer ring 2 of the bearing, the presence of the tapered guide ring 41 will not unduly obstruct the process of grease entering the bearing body. When the grease near the cage 31 is driven by backflow, the tapered guide ring 41 will block the backflowing grease to prevent the grease from entering the grease reservoir groove 22 along the guide cut 23. In this way, sufficient grease can be stored near the cage 31 to ensure that the bearing body obtains a good lubrication effect.
[0040] As an optional implementation of this embodiment, in order to achieve a detachable connection between the inner retaining ring 4 and the bearing inner ring 1, the inner retaining ring 4 may be provided with a plurality of first connecting screw holes 43, a connecting bolt 431 is provided inside the first connecting screw holes 43, and a plurality of second connecting screw holes for accommodating the connecting bolt 431 are provided on the end face of the bearing inner ring 1, so that the inner retaining ring 4 can be installed on the end face of the bearing inner ring 1 by means of the connecting bolt 431.
[0041] Furthermore, to improve the assembly reliability between the inner retaining ring 4 and the bearing inner ring 1, a splicing groove 42 with an inner diameter equal to the outer diameter of the bearing inner ring 1 can be provided on the bottom surface of the inner retaining ring 4. During assembly, the end of the bearing inner ring 1 will be inserted into the splicing groove 42, thereby achieving good coaxiality between the inner retaining ring 4 and the bearing inner ring 1, and preventing the inner retaining ring 4 from radially moving during operation.
[0042] It should be noted that when assembling this device, the operator should first assemble the load-bearing components, bearing body, and rotating components, then install the inner retaining ring 4 onto the inner ring 1 of the bearing, and then install the outer retaining ring 5 onto the outer ring of the bearing, to ensure that the components in this device are assembled in the correct order.
[0043] The effects of the above solution are explained below:
[0044] This embodiment provides a sealed textile machinery bearing that uses a sealing assembly formed by an inner and outer retaining ring to block the end of the bearing body, thereby reducing the probability of external lint entering the bearing body. Simultaneously, this device can replenish grease into the grease reservoir groove through the first mounting screw hole on the outer retaining ring, thus improving grease replenishment efficiency. Secondly, this device can also reduce friction between the inner and outer retaining rings through the sealing grease in the sealing ring groove, forming a liquid seal and enhancing the lint-blocking effect of the sealing assembly. Furthermore, this device can also prevent grease backflow through a tapered guide ring, ensuring sufficient grease coverage near the cage.
[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A sealed textile machinery bearing, comprising a bearing body, the bearing body comprising: The bearing comprises an inner ring (1), an outer ring (2), and a cage (31). The inner ring (1) is located inside the outer ring (2), and the cage (31) is disposed between the inner ring (1) and the outer ring (2). Multiple rolling elements (32) are provided on the cage (31), and raceways for accommodating the rolling elements (32) are provided on both the outer sidewall of the inner ring (1) and the inner sidewall of the outer ring (2). The bearing is characterized by: The sealed textile machinery bearing further includes two sealing components, which are respectively disposed at both ends of the bearing body. Each sealing component includes an inner retaining ring (4) and an outer retaining ring (5). The inner retaining ring (4) is detachably disposed on the end face of the inner ring (1) of the bearing. An assembly groove (21) is provided on the inner side wall of the outer ring (2) of the bearing, and the outer diameter of the inner retaining ring (4) is equal to the inner diameter of the assembly groove (21). The outer retaining ring (5) is detachably disposed on the end face of the outer ring (2) of the bearing. The inner diameter of the outer retaining ring (5) is smaller than the outer diameter of the inner retaining ring (4), and the bottom surface of the outer retaining ring (5) is parallel to the inner surface of the bearing. The top surfaces of the inner retaining ring (4) are in contact; the end face of the bearing outer ring (2) is provided with a grease reservoir groove (22), and a plurality of flow guide cuts (23) communicating with the grease reservoir groove (22) are provided on the inner side wall of the bearing outer ring (2), and the flow guide cuts (23) are located on the side of the inner retaining ring (4) near the cage (31); a plurality of first mounting screw holes (51) are also provided on the outer retaining ring (5), each first mounting screw hole (51) is provided with a mounting bolt (511), and a plurality of second mounting screw holes for accommodating the mounting bolts (511) are provided on the bottom surface of the grease reservoir groove (22).
2. The sealed textile machinery bearing according to claim 1, characterized in that: The bottom surface of the inner retaining ring (4) is provided with a tapered guide ring (41), the bottom end of which extends to below the guide cut (23) and forms a guide gap between the tapered guide ring (41) and the inner wall of the bearing outer ring (2).
3. A sealed textile machinery bearing according to claim 1, characterized in that: The bottom surface of the inner retaining ring (4) is provided with a splicing groove (42) for accommodating the end of the bearing inner ring (1), and the inner diameter of the splicing groove (42) is equal to the outer diameter of the bearing inner ring (1).
4. A sealed textile machinery bearing according to claim 1, characterized in that: The inner retaining ring (4) is provided with a plurality of first connecting screw holes (43), and a connecting bolt (431) is provided inside the first connecting screw holes (43). Furthermore, a plurality of second connecting screw holes for accommodating the connecting bolt (431) are provided on the end face of the bearing inner ring (1).
5. A sealed textile machinery bearing according to claim 1, characterized in that: The bottom surface of the outer retaining ring (5) is provided with a sealing ring groove (52), and the sealing ring groove (52) is filled with sealing grease.
6. A sealed textile machinery bearing according to claim 5, characterized in that: The outer retaining ring (5) has an injection hole (53) on its top surface. The injection hole (53) is connected to the sealing ring groove (52), and a removable sealing plug (531) is provided in the injection hole (53).
7. A sealed textile machinery bearing according to claim 1, characterized in that: The bottom surface of the outer retaining ring (5) is provided with a sealing ring (54), and the sealing ring (54) is inserted into the grease storage ring groove (22).
8. A sealed textile machinery bearing according to claim 1, characterized in that: The inner retaining ring (4) is made of silicone or rubber material, and the outer retaining ring (5) is made of metal material.