Oil-leakage-proof guide rail component and linear guide rail

Abstract

The utility model discloses an anti-oil-leakage guide rail component which comprises a rotary plate connected to a return cover in a matched mode, communicated oil injection holes are formed in the rotary plate and the return cover, a sealing groove is formed in the side face, facing the return cover, of the rotary plate, the sealing groove is located on the outer ring of the oil injection holes, a sealing ring is embedded in the sealing groove, and the oil injection holes are communicated with the sealing groove. When the rotary plate and the return cover are assembled, the sealing ring is in interference fit with the end face of the return cover. The linear guide rail comprises a guide rail body, a sliding block arranged on the guide rail body in a sliding mode and the oil leakage prevention guide rail component arranged on the end side of the sliding block. According to the guide rail component capable of preventing oil leakage and the linear guide rail, the oil leakage phenomenon between the reversing cover and the rotary plate can be effectively avoided, it is guaranteed that a channel can be fully lubricated, and the use amount of lubricating oil is reduced.

Description

Technical Field

[0001] This utility model relates to the field of linear guide technology, and in particular to a guide rail component and a linear guide rail that prevents oil leakage. Background Technology

[0002] Linear guides, as mechanical elements used to guide the linear and curvilinear motion of moving bodies such as worktables, are motion guiding devices with rolling elements such as balls and rollers clamped in the guiding part, enabling smooth movement. Therefore, they are used in a variety of fields such as robots, machine tools, semiconductor / LCD manufacturing equipment, and medical equipment.

[0003] The existing linear guide's lubrication structure generally has oil injection holes in the return cover and the rotating plate. The lubricating oil enters the lubrication circuit through the oil injection holes in the return cover and the rotating plate, and then the lubrication circuit delivers the lubricating oil to the grooves of the guide rail, thereby achieving the lubrication effect.

[0004] However, due to the large contact area between the return cover and the rotating plate, there is often a gap between them due to dimensional deviations. It is difficult to ensure the flatness of the return cover and the rotating plate during assembly. In this case, there will be a gap at the oil injection hole of the return cover and the rotating plate, and the lubricating oil will leak when passing through the oil injection hole.

[0005] For small linear guides, even with oil leakage, sufficient lubrication can still maintain adequate lubrication in the grooves. However, for large linear guides, lubrication leakage leads to reduced oil volume, lower oil pressure, slower oil delivery, and even insufficient oil supply to the grooves. This prevents the linear guide from achieving long-term effective lubrication during operation, causing abnormal wear and significantly reducing its lifespan. Utility Model Content

[0006] The technical problem to be solved by this utility model is: This utility model provides an oil-proof guide rail component and a linear guide rail, which can prevent oil leakage between the return cover and the rotating plate, ensure that the channel can be fully lubricated, and reduce the amount of lubricating oil used.

[0007] The technical solution adopted by this utility model to solve its technical problem is: an oil-proof guide rail component, including a rotary plate that is connected to a return cover. The rotary plate and the return cover are provided with communicating oil injection holes. A sealing groove is provided on the side of the rotary plate facing the return cover. The sealing groove is located on the outer ring of the oil injection hole, and a sealing ring is embedded in the sealing groove. When the rotary plate and the return cover are assembled, the sealing ring and the end face of the return cover are interference-fitted.

[0008] Furthermore, in order to press the sealing ring tightly onto the end face of the return cover, the depth of the sealing groove is less than the thickness of the sealing ring, and the portion of the sealing ring protruding from the sealing groove is interference-fitted with the return cover.

[0009] Furthermore, in order to ensure the sealing effect of the sealing ring, the depth of the sealing groove is 1 / 2 to 3 / 4 of the thickness of the sealing ring.

[0010] Furthermore, in order to facilitate the assembly of the sealing ring and provide space for the elastic deformation of the sealing ring, the sealing groove and the sealing ring are fitted with a clearance in the circumferential direction.

[0011] Furthermore, in order to achieve a seal between the rotary plate and the slider, a sealing film is attached to the end face of the rotary plate facing the slider.

[0012] Furthermore, in order to ensure that the lubricating oil can be evenly distributed to each channel, the rotary plate is also provided with a lubricating oil passage. The lubricating oil passage includes a main oil passage connected to the oil injection hole and a secondary oil passage connected to the channel. A buffer oil groove is provided between the main oil passage and the secondary oil passage.

[0013] Furthermore, in order to shorten the length of the auxiliary oil passage and speed up the oil supply, the buffer oil trough is located near the channel.

[0014] Furthermore, in order to ensure the oil pressure balance of the auxiliary oil circuit, the buffer oil groove is a groove with an enlarged diameter relative to the path of the main oil circuit.

[0015] Furthermore, in order to shorten the time it takes for lubricating oil to enter the channel, the path of the auxiliary oil passage is shorter than that of the main oil passage.

[0016] A linear guide rail includes a guide rail, a slider slidably disposed on the guide rail, and an oil-proof guide rail component disposed on the end side of the slider as described above.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The oil-proof guide rail component and linear guide rail of this utility model seal the gap between the oil injection hole of the return cover and the rotary plate through the interference fit sealing ring, so as to avoid the lubricating oil leakage at the oil injection hole and reduce the amount of lubricating oil used while ensuring sufficient lubrication of the groove.

[0019] 2. The oil-proof guide rail component and linear guide rail of this utility model achieve the sealing between the rotating plate and the slider through the sealing film. The sealing design of the above-mentioned sealing ring achieves the oil-proof design of the entire linear guide rail.

[0020] 3. The oil-leakage-proof guide rail and linear guide rail of this utility model use a buffer oil groove to balance the oil pressure entering the auxiliary oil circuit from the main oil circuit, ensuring that the oil intake between the auxiliary oil circuits is similar, reducing the length and path of the auxiliary oil circuits, accelerating the speed at which lubricating oil enters the channel, and achieving rapid and uniform oil supply. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a structural schematic diagram of the oil-proof guide rail component of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the rotating plate and the sealing ring;

[0024] Figure 3 This is a schematic diagram showing the assembly state of the sealing groove and the sealing ring.

[0025] Figure 4 This is a schematic diagram of the rotating plate structure;

[0026] Figure 5 This is a schematic diagram of the linear guide rail structure;

[0027] Figure 6 A diagram illustrating the usage posture of guide rail components designed to prevent oil leakage;

[0028] In the diagram: 1. Reversing cover, 2. Rotary plate, 21. Sealing groove, 22. Sealing ring, 23. Main oil passage, 24. Auxiliary oil passage, 25. Buffer oil groove, 3. Oil injection hole, 4. Oil sealing film, 5. Slider. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship 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, features defined with "first" or "second" 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.

[0031] 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.

[0032] like Figure 1 and Figure 2 As shown, an oil-leakage-proof guide rail component includes a rotating plate 2 that is fitted onto a return cover 1. The rotating plate 2 and the return cover 1 have interconnected oil injection holes 3. A sealing groove 21 is provided on the side of the rotating plate 2 facing the return cover 1. The sealing groove 21 is located around the outer edge of the oil injection hole 3, and a sealing ring 22 is embedded within the sealing groove 21. When the rotating plate 2 and the return cover 1 are assembled, the sealing ring 22 is press-fitted to the end face of the return cover 1. After the rotating plate 2 and the return cover 1 are assembled, the sealing ring 22 is compressed and deformed, causing it to press precisely against the end face of the return cover 1. In this situation, since the sealing ring 22 is located just outside the oil injection hole 3, even if there is an assembly gap between the rotating plate 2 and the return cover 1, the lubricating oil leaking from the oil injection hole 3 will not overflow the sealing ring 22, thus effectively preventing lubricating oil leakage.

[0033] In this embodiment, the depth of the sealing groove 21 is less than the thickness of the sealing ring 22, and the portion of the sealing ring 22 protruding from the sealing groove 21 is press-fitted with the return cover 1. Under pressure, the portion of the sealing ring 22 protruding from the sealing groove 21 can be better pressed against the end face of the return cover 1, resulting in a better sealing effect.

[0034] Preferably, since the gaps between different rotating plates 2 and reversing covers 1 may vary, in order to achieve a good sealing effect under different gaps, the depth of the sealing groove 21 is designed to be 1 / 2 to 3 / 4 of the thickness of the sealing ring 22. Specifically, the depth of the sealing groove 21 is 2 / 3 of the thickness of the sealing ring 22.

[0035] like Figure 3 As shown, in this embodiment, the sealing groove 21 and the sealing ring 22 are fitted with a clearance in the circumferential direction. The size of the sealing groove 21 is slightly larger than that of the sealing ring 22, so that the sealing ring 22 can be easily installed into the sealing groove 21. At the same time, the clearance also provides space for the deformation of the sealing ring 22, preventing the sealing ring 22 from being squeezed out of the sealing groove 21.

[0036] In this embodiment, an oil sealing film 4 is connected to the end face of the rotary plate 2 facing the slider 5. By using the oil sealing film 4 to seal the end face of the rotary plate 2 with the oil exchange path, the guide rail components can achieve a complete seal after the slider is installed, further preventing the leakage of lubricating oil.

[0037] In this embodiment, the rotary plate 2 is also provided with a lubricating oil passage, which includes a main oil passage 23 connected to the oil injection hole 3 and a secondary oil passage 24 connected to the groove. A buffer oil groove 25 is provided between the main oil passage 23 and the secondary oil passage 24. Preferably, the secondary oil passage 24 consists of two symmetrical oil passages in opposite directions. The secondary oil passage 24 is configured in conjunction with the slider and is not limited to the structure of the secondary oil passage 24 disclosed in this application.

[0038] In this embodiment, the buffer oil groove 25 is an enlarged-diameter groove relative to the main oil passage 23. Preferably, the buffer oil groove 25 is designed as an approximately circular structure to fully achieve the buffering effect. Of course, the buffer oil groove can also be designed as a fan-shaped, square, or irregular shape as needed, all of which can achieve the same function. The buffer oil groove 25 forms an enlarged-diameter area relative to the main oil passage 23, and the oil in the main oil passage 23 can be buffered and temporarily stored in the buffer oil groove 25. Therefore, the buffer oil groove 25 can balance the pressure of the lubricating oil, so that the lubricating oil can be evenly distributed to the auxiliary oil passage 24, making the oil intake of the auxiliary oil passage 24 similar, and ensuring that the oil intake into each channel is also similar.

[0039] In this embodiment, the buffer oil groove 25 is located near the groove. Positioning the buffer oil groove 25 closer to the groove reduces the length of the secondary oil passage 24. Preferably, the path of the secondary oil passage 24 is shorter than the path of the main oil passage 23 (where "path" specifically refers to the width of the oil passage). The smaller and shorter path of the secondary oil passage 24 compared to the main oil passage 23 allows the lubricating oil to reach the groove faster.

[0040] like Figure 5 As shown, a linear guide rail includes the aforementioned oil-proof guide rail component.

[0041] Experimental tests revealed that the present invention provides better lubrication than similar solutions, with more uniform oil distribution across the four channels and requiring less lubricating oil.

[0042] like Figure 6 As shown, existing linear guides, even when mounted on or tilted against a wall, cannot achieve uniform lubrication across all four grooves despite the increased lubrication volume leading to leakage. This embodiment requires only half the lubrication volume of existing linear guides to achieve uniform lubrication across all four grooves. Existing linear guides leak during reverse radial operation; this embodiment effectively reduces the probability of leakage, requiring only one-third the lubrication volume of existing linear guides while still achieving adequate lubrication. In all other operating configurations, it requires less lubrication than existing linear guides.

[0043] In summary, the oil-proof guide rail component of this utility model can prevent oil leakage between the return cover and the rotating plate, ensure sufficient lubrication of the channel, and reduce the amount of lubricating oil used.

[0044] The above description is based on the preferred embodiments of this utility model. Through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined by the scope of the claims.

Claims

1. A leak-proof guide rail component, comprising a rotating plate (2) fitted onto a return cover (1), wherein the rotating plate (2) and the return cover (1) are provided with communicating oil injection holes (3), characterized in that, The rotating plate (2) has a sealing groove (21) on the side facing the return cover (1). The sealing groove (21) is located on the outer ring of the oil injection hole (3), and a sealing ring (22) is embedded in the sealing groove (21). When the rotating plate (2) and the return cover (1) are engaged, the sealing ring (22) and the return cover (1) are interference fit.

2. The oil-proof guide rail component according to claim 1, characterized in that, The depth of the sealing groove (21) is less than the thickness of the sealing ring (22), and the portion of the sealing ring (22) protruding from the sealing groove (21) is press-fitted with the return cover (1).

3. The oil-proof guide rail component according to claim 2, characterized in that, The depth of the sealing groove (21) is 1 / 2 to 3 / 4 of the thickness of the sealing ring (22).

4. The oil-proof guide rail component according to claim 1, characterized in that, The sealing groove (21) and the sealing ring (22) are fitted with a clearance in the circumferential direction.

5. The oil-proof guide rail component according to any one of claims 1-4, characterized in that, The rotating plate (2) has an oil-sealing film (4) attached to the end face of the slider (5).

6. The oil-proof guide rail component according to claim 5, characterized in that, The rotary plate (2) is also provided with a lubricating oil passage, which includes a main oil passage (23) connected to the oil injection hole (3) and a secondary oil passage (24) connected to the channel. A buffer oil groove (25) is provided between the main oil passage (23) and the secondary oil passage (24).

7. The oil-proof guide rail component according to claim 1, characterized in that, The buffer oil tank (25) is located near the channel.

8. The oil-proof guide rail component according to claim 7, characterized in that, The buffer oil tank (25) is a tank with an enlarged diameter relative to the main oil passage (23).

9. The oil-proof guide rail component according to claim 1, characterized in that, The path of the auxiliary oil passage (24) is shorter than that of the main oil passage (23).

10. A linear guide rail, characterized in that, It includes a guide rail, a slider slidably disposed on the guide rail, and an oil-proof guide rail component as described in any one of claims 1-9 disposed on the end side of the slider.

Images