High speed bearing for sewing machine with self-lubricating ring

Abstract

This utility model relates to the field of bearing technology and discloses a high-speed sewing machine bearing with a self-lubricating ring. It includes a bearing body composed of an outer ring, an inner ring, and rolling elements, and a mounting shaft. The inner wall of the lubricating ring body is fixedly fitted to the outer wall of the outer ring. An annular oil reservoir is formed within the lubricating ring body, and absorbent fiber is placed inside the annular oil reservoir, filling the space between the inner wall and the bottom of the annular oil reservoir. This high-speed sewing machine bearing with a self-lubricating ring, by fitting a lubricating ring body with an annular oil reservoir outside the outer ring, continuously and stably delivers lubricating oil to the contact area between the rolling elements and the inner and outer rings of the bearing through interconnected first and second oil injection holes. This eliminates the need for frequent manual oiling during machine stops, reducing manual intervention. The even distribution of the first and second oil injection holes ensures uniform distribution of lubricating oil along the bearing circumference.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically a high-speed bearing for sewing machines with a self-lubricating ring. Background Technology

[0002] High-speed bearings are one of the core transmission components of sewing machines. They are mainly used to support rotating components such as the sewing machine spindle and drive shaft. During the high-speed operation of the sewing machine, the high-speed bearings, the core transmission component, need to maintain stable lubrication to reduce friction loss and extend service life.

[0003] As disclosed in CN205152563U, a sealed bearing for sewing machines includes a connecting sleeve. Its features include a sealing ring, a retaining ring, and a timing wheel. A connecting sleeve is provided on the outer side of the shaft, and a sealing ring is provided on the outer side of the connecting sleeve. The sealing ring is filled with grease. A retaining ring is provided on the side of the sealing ring to prevent movement. A timing wheel is provided on the outer side of the shaft at the rear end of the sealing ring. The radius of the sealing ring is 5cm-8cm. This invention solves the problem that in existing high-speed sewing machines, grease needs to be applied to the bearing on the outer side of the upper or lower shaft to maintain rotational stability. However, with continuous use, grease leakage is very easy, affecting the operation of the sewing machine. Furthermore, dust ingress significantly affects the performance and service life of the shaft. This invention provides a sealed bearing for sewing machines that is simple in structure, easy to use, prevents grease leakage, and prevents dust ingress.

[0004] However, existing technologies require regular manual oiling for lubrication, which has obvious drawbacks: on the one hand, manual oiling relies on the operator's experience and is prone to problems such as untimely oiling and uneven oil control; on the other hand, manual oiling requires machine shutdown, which reduces production efficiency and disrupts the continuity of the sewing process, as is the case with the comparative patents listed above.

[0005] Therefore, this invention provides a high-speed sewing machine bearing with a self-lubricating ring to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a high-speed sewing machine bearing with a self-lubricating ring to solve the problem of the lubrication method that requires periodic manual oiling as mentioned in the background art. This method has obvious drawbacks: on the one hand, manual oiling relies on the operator's experience, which can easily lead to problems such as untimely oiling and uneven oil control; on the other hand, manual oiling requires stopping the machine, which reduces production efficiency and disrupts the continuity of the sewing process.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-speed sewing machine bearing with a self-lubricating ring, comprising a bearing body composed of an outer bearing ring, an inner bearing ring, rolling elements, and a mounting shaft;

[0008] Also includes:

[0009] The lubricating ring body has its inner wall fitted and fixed to the outer wall of the bearing outer ring. An annular oil storage cavity is provided in the lubricating ring body. A plurality of first oil injection holes are evenly provided on the side of the lubricating ring body facing the bearing outer ring. One end of the first oil injection hole is connected to the annular oil storage cavity, and the other end is connected to a second oil injection hole provided on the side of the bearing outer ring away from the rolling element.

[0010] Meanwhile, the annular oil storage cavity is equipped with fiber oil-absorbing cotton, which fills the space between the inner wall and the bottom of the annular oil storage cavity.

[0011] As a preferred embodiment of this utility model, a limiting protrusion is fixed on the inner side of the bearing inner ring, and the limiting protrusion matches the mounting groove opened on the mounting shaft.

[0012] By adopting the above technical solution, a limiting protrusion is fixed on the inner side of the bearing inner ring, and the limiting protrusion matches the mounting groove opened on the mounting shaft, which facilitates the assembly between the mounting shaft and the bearing body.

[0013] As a preferred embodiment of this utility model, the mounting shaft passes through the inner ring of the bearing, and a limiting protrusion key engages in the mounting groove.

[0014] Using the above technical solution, the mounting shaft passes through the inner ring of the bearing, and a limiting protrusion key engages in the mounting groove, which facilitates the connection between the mounting shaft and the inner ring of the bearing.

[0015] As a preferred embodiment of this utility model, the lubrication ring body and the bearing outer ring are connected by an interference fit, and the axial length of the lubrication ring body is consistent with the axial length of the bearing outer ring.

[0016] By adopting the above technical solution, the lubrication ring body and the bearing outer ring are connected by an interference fit, and the axial length of the lubrication ring body is consistent with the axial length of the bearing outer ring, so that the lubrication ring body and the bearing are mutually matched.

[0017] As a preferred technical solution of this utility model, the upper end of the lubrication ring body is provided with an oil injection component, including an oil injection port fixed to the upper end of the lubrication ring body and a fixing block for sealing.

[0018] The above technical solution includes an oil injection assembly at the upper end of the lubrication ring body, comprising an oil injection port fixed to the upper end of the lubrication ring body and a fixing block for sealing, which facilitates the addition of lubricating oil to the lubrication ring body.

[0019] As a preferred technical solution of this utility model, the oil injection port is connected to the annular oil storage cavity, and a fixing block is engaged at the upper end of the oil injection port, and a sealing ring is tightly fitted between the oil injection port and the fixing block.

[0020] The oil inlet is limited to the fixed block by fastening bolts that pass through the left and right sides of the fixed block.

[0021] The above technical solution is adopted, with the oil injection port connected to the annular oil storage cavity, and a fixing block is engaged at the upper end of the oil injection port, and a sealing ring is tightly fitted between the oil injection port and the fixing block.

[0022] The oil inlet is limited by fastening bolts that pass through the left and right sides of the fixing block, which facilitates sealing the oil inlet after oil is injected.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows: This high-speed sewing machine bearing with a self-lubricating ring, by sleeved with a lubricating ring body with an annular oil reservoir on the outer side of the bearing outer ring, and with the interconnected first and second oil injection holes, allows the lubricating oil in the annular oil reservoir to be continuously and stably delivered to the contact parts between the rolling elements and the inner and outer rings of the bearing through the first and second oil injection holes. It eliminates the need for frequent manual stops for oiling, reducing manual intervention. The even distribution of the first and second oil injection holes ensures that the lubricating oil is evenly distributed in the circumferential direction of the bearing, accurately matching the lubrication requirements of the bearing during high-speed rotation, keeping the bearing in the best lubrication state, reducing friction loss, and extending the service life of the bearing. Combined with the setting of the oil injection component, it is convenient to add lubricating oil to the annular oil reservoir.

[0024] 1. It is equipped with a lubricating ring body and an annular oil reservoir. The lubricating ring body is sleeved and fixed on the outer side of the outer ring of the bearing. The annular oil reservoir is provided in the lubricating ring body to facilitate the automatic addition of lubricating oil between the rolling elements and the inner and outer rings of the bearing for self-lubrication.

[0025] 2. It is equipped with fiber oil-absorbing cotton, a first oil injection hole and a second oil injection hole. The fiber oil-absorbing cotton is placed inside the annular oil storage cavity, and the first oil injection hole and the second oil injection hole are connected to facilitate the addition of lubricating oil. Combined with the setting of the fiber oil-absorbing cotton, it absorbs and stores the lubricating oil in the annular oil storage cavity. At the same time, through its own oil absorption and seepage characteristics, it evenly and slowly delivers the lubricating oil to the first oil injection hole and the second oil injection hole to achieve a continuous and stable lubrication effect.

[0026] 3. An oil injection assembly is provided, which includes an oil injection port and a fixing block. The oil injection port is connected to the annular oil storage chamber. Oil is injected into the annular oil storage chamber through the oil injection port. After the oil injection is completed, the fixing block is locked in the oil injection port to facilitate the sealing of the oil injection port. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a bottom view of the overall structure of the bearing body of this utility model;

[0030] Figure 3 This is a frontal sectional view of the present invention.

[0031] Figure 4 This is an exploded structural diagram of the lubrication ring body, annular oil storage cavity, first oil injection hole, second oil injection hole, and bearing outer ring of this utility model.

[0032] Figure 5 This is an exploded structural diagram of the lubrication ring body, annular oil storage cavity, and first oil injection hole of this utility model;

[0033] Figure 6 This is an exploded structural diagram of the lubrication ring body and oil injection assembly of this utility model.

[0034] In the diagram: 1. Bearing outer ring; 2. Bearing inner ring; 3. Rolling element; 4. Limiting key; 5. Mounting shaft; 6. Mounting groove; 7. Lubricating ring body; 8. Annular oil reservoir; 9. Oil-absorbing fiber cotton; 10. First oil injection hole; 11. Second oil injection hole; 12. Oil inlet; 13. Fixing block; 14. Sealing ring; 15. Fastening bolt. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1-6 The present invention provides the following technical solution:

[0037] To address the shortcomings of existing lubrication methods that require periodic manual oiling, which have significant drawbacks, manual oiling relies on operator experience and is prone to issues such as untimely oiling and uneven oil volume control. Furthermore, manual oiling necessitates machine downtime, reducing production efficiency and disrupting the continuity of the sewing process. Therefore, this solution addresses these issues with a high-speed sewing machine bearing featuring a self-lubricating ring. The bearing body comprises an outer ring 1, an inner ring 2, and rolling elements 3, forming a bearing body and a mounting shaft 5. A lubricating ring body 7 has its inner wall fitted and fixed to the outer wall of the outer ring 1. An annular oil reservoir 8 is provided within the lubricating ring body 7. Multiple first oil injection holes 10 are evenly distributed on the side of the lubricating ring body 7 facing the outer ring 1. One end of each first oil injection hole 10 communicates with the annular oil reservoir 8, and the other end communicates with a second oil injection hole 11 located on the side of the outer ring 1 away from the rolling elements 3. Fiber absorbent cotton 9 is provided within the annular oil reservoir 8, filling the space between the inner wall and the bottom of the annular oil reservoir 8.

[0038] like Figure 1 and Figure 2 As shown, a limiting key 4 is fixed inside the bearing inner ring 2, and a mounting groove 6 adapted to the limiting key 4 is provided on the mounting shaft 5. The mounting shaft 5 passes through the bearing inner ring 2, and the limiting key 4 is engaged in the mounting shaft 5, thereby facilitating the installation and positioning between the mounting shaft 5 and the bearing inner ring 2, improving the reliability of the overall structure. Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the lubricating ring body 7 is sleeved and fixed on the outside of the bearing outer ring 1. The lubricating ring body 7 and the bearing outer ring 1 are connected by an interference fit, and the axial length of the lubricating ring body 7 is consistent with the axial length of the bearing outer ring 1. Moreover, the upper end of the lubricating ring body 7 is provided with an oil injection assembly, including an oil injection port 12 fixed to the upper end of the lubricating ring body 7 and a fixing block 13 for sealing. The oil injection port 12 is connected to the annular oil reservoir 8. An appropriate amount of lubricating oil is added to the annular oil reservoir 8 through the oil injection port 12. After the addition is completed, the fixing block 13 is engaged at the upper end of the oil injection port 12, and a sealing ring 14 is provided between the fixing block 13 and the oil injection port 12 to improve the sealing effect at the connection. Then, the fixing bolt 15 is used to limit the position between the oil injection port 12 and the fixing block 13.

[0039] The annular oil reservoir 8 is equipped with fiber oil-absorbing cotton 9. Through the setting of the fiber oil-absorbing cotton 9, it can absorb and store the lubricating oil inside the annular oil reservoir 8. Combined with its own oil absorption and seepage characteristics, it can evenly and slowly deliver the lubricating oil to the first oil injection hole 10 and the second oil injection hole 11 during use. The lubricating oil is evenly and stably delivered to the rolling element 3, providing continuous and stable lubrication for the bearing. It also avoids the lubricating oil from accumulating or rapidly losing due to the centrifugal force generated by the high-speed operation of the bearing, ensuring that the oil output from the oil outlet is uniform, preventing oil spillage caused by excessive lubrication or wear caused by insufficient lubrication. By absorbing more lubricating oil, it reduces the frequency of frequent oil injection. At the same time, it prevents the oil from settling and deteriorating in the oil reservoir for a long time, indirectly extending the lubrication and maintenance cycle of the bearing.

[0040] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-speed sewing machine bearing with a self-lubricating ring, comprising a bearing body and a mounting shaft (5) consisting of an outer bearing ring (1), an inner bearing ring (2), and rolling elements (3). Its features are, Also includes: The lubricating ring body (7) has its inner wall fitted and fixed to the outer wall of the bearing outer ring (1). The lubricating ring body (7) has an annular oil storage cavity (8) inside. The lubricating ring body (7) has a plurality of first oil injection holes (10) evenly opened on the side of the bearing outer ring (1) facing the bearing outer ring (1). One end of the first oil injection hole (10) is connected to the annular oil storage cavity (8), and the other end is connected to the second oil injection hole (11) opened on the side of the bearing outer ring (1) away from the rolling element (3). Meanwhile, the annular oil storage cavity (8) is provided with fiber oil-absorbing cotton (9), which fills the space between the inner wall and the bottom of the annular oil storage cavity (8).

2. A high-speed sewing machine bearing with a self-lubricating ring according to claim 1, characterized in that: The inner side of the bearing inner ring (2) is fixed with a limiting protrusion key (4), and the limiting protrusion key (4) matches the mounting groove (6) opened on the mounting shaft (5).

3. A high-speed sewing machine bearing with a self-lubricating ring according to claim 2, characterized in that: The mounting shaft (5) passes through the inner ring (2) of the bearing, and the mounting groove (6) engages with the limiting protrusion key (4).

4. A high-speed sewing machine bearing with a self-lubricating ring according to claim 1, characterized in that: The lubricating ring body (7) and the bearing outer ring (1) are connected by an interference fit, and the axial length of the lubricating ring body (7) is consistent with the axial length of the bearing outer ring (1).

5. A high-speed sewing machine bearing with a self-lubricating ring according to claim 4, characterized in that: The upper end of the lubrication ring body (7) is provided with an oil injection assembly, including an oil injection port (12) fixed to the upper end of the lubrication ring body (7) and a fixing block (13) for sealing.

6. A high-speed sewing machine bearing with a self-lubricating ring according to claim 5, characterized in that: The oil inlet (12) is connected to the annular oil storage cavity (8), and a fixing block (13) is engaged at the upper end of the oil inlet (12), and a sealing ring (14) is tightly fitted between the oil inlet (12) and the fixing block (13). The oil inlet (12) and the fixing block (13) are limited by fastening bolts (15) that pass through the left and right sides of the fixing block (13).

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