Return cover structure with good lubrication and linear guide rail

Abstract

The utility model relates to the technical field of linear guide rails, in particular to a return cover structure with good lubrication and a linear guide rail. A return cover structure with good lubrication comprises a return cover body and an oil plate, a front oil nozzle mounting hole is formed in the middle of the upper portion of the return cover body, a first upper ball groove and a first lower ball groove are sequentially formed in the position close to one side from top to bottom, and a second upper ball groove and a second lower ball groove are sequentially formed in the position close to the other side from top to bottom. A main oil way is arranged on the reversing cover body around the four ball grooves and communicated with the four ball grooves. The oil plate covers a half of the main oil way or covers all the oil ways on the reversing cover body. Compared with the prior art, one oil plate is additionally arranged, the resistance of oil flowing upwards is reduced under the wall hanging and reverse states, it is guaranteed that the oil can flow upwards, it is guaranteed that the four ball grooves of the reverse cover can be filled with lubricating oil, and the service life of the guide rail is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of linear guides, in particular to a reverse cover structure with good lubrication and a linear guide. Background Art

[0002] With the rapid development of the automation industry, the application scenarios of linear guides are becoming more and more extensive. Different application scenarios have greatly different lubrication methods for sliders. Some scenarios require grease lubrication, and some scenarios require lubricating oil for lubrication. There are also many installation postures of linear guides, such as Figures 1 to 4 As shown, there are horizontal, vertical, reverse, wall-mounted, inclined and other postures. Under different postures, the oil in the four ball tracks of the slider will not reach evenly. When the linear guide is installed horizontally, vertically or reversely, when lubricated with grease or lubricating oil, the oil can enter the four ball tracks of the reverse cover evenly. When the linear guide is installed in the wall-mounted posture, due to the gravity factor, the resistance of the oil flowing downward is small, and the resistance of the oil flowing upward is large. The oil will not flow upward smoothly and will only flow downward all the time. This will cause the upper ball track to be unable to be filled with oil, and the guide rail cannot be lubricated, resulting in a significant reduction in its service life. In the wall-mounted posture, since the grease is in a solid paste state and the lubricating oil is in a liquid state, the grease can flow to the upper ball track of the reverse cover under a certain pressure, but it is difficult for the lubricating oil to flow to the upper ball track, resulting in poor lubrication of the slider and reducing the service life of the slider.

[0003] Currently, domestic manufacturers all meet different application scenarios by replacing the reverse cover. Under different lubrication conditions and different installation postures, the corresponding reverse cover is used. In this way, the types of slider accessories are numerous, which easily leads to errors during the assembly of the slider, greatly increasing the accessory cost and reducing the installation efficiency of the slider. Summary of the Invention

[0004] The technical problem to be solved by the utility model is: to provide a reverse cover structure with good lubrication in order to solve the problems existing in the prior art in the above background art.

[0005] The technical solution adopted by the utility model to solve its technical problem is: a reverse cover structure with good lubrication, including:

[0006] A reverse cover body, in the middle of its upper part, there is a front oil nozzle installation hole. Near one side, a first upper ball track and a first lower ball track are successively arranged from top to bottom. Near the other side, a second upper ball track and a second lower ball track are successively arranged from top to bottom. A main oil path is arranged around the above four ball tracks on the reverse cover body, and the main oil path is connected to the four ball tracks;

[0007] An oil plate, which covers half of the main oil path or all the oil paths on the reverse cover body.

[0008] Further, a side oil injection nozzle mounting hole is provided on one side wall of the reverse cover body. A side channel connection hole is provided on one side of the front oil nozzle mounting hole. A side oil injection oil path is provided between the side channel connection hole and the side oil injection nozzle mounting hole, and the side oil injection oil path is communicated with the main oil path.

[0009] Furthermore, internal threads are provided on the inner wall of the side oil injection nozzle mounting hole.

[0010] Further, the main oil path includes a left oil path and a right oil path that are identical in structure and symmetrically distributed. Any one of the side oil paths includes a first oil section, a second oil section, a third oil section, a fourth oil section, a fifth oil section, a sixth oil section, and a seventh oil section that are connected in sequence.

[0011] Furthermore, the first oil section is a straight line segment extending from the front oil nozzle mounting hole to one side. The second oil section is an inclined line segment forming an angle of 25° to 45° with the first oil section. The third oil section is a transition arc section between the second oil section and the fourth oil section. The fourth oil section is an inclined line segment forming an angle of 135° with the first oil section. The fifth oil section is a straight line segment extending from the end of the fourth oil section. The sixth oil section and the seventh oil section are inclined line segments respectively communicated with the upper lane and the lower lane on any one side.

[0012] Furthermore, the end of the fourth oil section is located at the middle position between the upper lane and the lower lane on any one side.

[0013] Furthermore, when the oil plate covers half of the main oil path, it cooperates with any one of the side oil paths. When installed, an oil path inlet is provided at the lower part of one end of the oil plate close to the oil nozzle mounting hole, and an oil path outlet leading to the upper lane and the lower lane on any one side is provided below the other end of the oil plate.

[0014] Furthermore, arc edges are formed outward on both sides of the oil plate corresponding to the second oil section, and retaining edges are formed by extending outward on both sides of the oil plate.

[0015] Furthermore, when the oil plate covers all the oil paths on the reverse cover body, it has a left side section corresponding to the left oil path, a right side section corresponding to the right oil path, and a connecting section corresponding to the side oil injection oil path. A high molecular material film is provided in the oil plate. The structure of the high molecular material film is the same as that of the oil plate, but the width of the high molecular material film is smaller than the width of the oil plate.

[0016] Furthermore, the thickness of the high molecular material film is 0.15 mm to 0.25 mm.

[0017] Also provided is a linear guide rail, which includes a guide rail body. A slider is arranged on the guide rail body and slides back and forth along it. On both sides of the slider, there is the well-lubricated reverse cover structure described in the above solution. An end seal is installed on the end face of the reverse cover body of the reverse cover structure. An oil nozzle is installed on the front oil nozzle mounting hole, and a tubing interface is opened on the oil nozzle.

[0018] Advantages of the present utility model:

[0019] Compared with the prior art, the present utility model adds an oil plate, which reduces the resistance of oil flowing upward in the wall-hanging and reverse states, ensures that the oil can flow upward, and ensures that all four ball tracks of the reverse cover are filled with lubricating oil, greatly improving the service life of the guide rail;

[0020] Ensures that the same reverse cover structure can meet different installation postures without the need to use multiple different reverse covers, greatly improving the assembly efficiency and reducing the manufacturing cost;

[0021] The oil plate is provided with a baffle to improve the sealing performance of the oil plate. The oil plate is provided with a polymer material film to ensure good fluidity of the oil, reduce the loss of the oil amount of the slider, and enhance the lubrication effect of the slider. Description of the drawings

[0022] The present utility model will be further described below with reference to the drawings and embodiments.

[0023] Figure 1 is a schematic structural diagram of the horizontal installation posture of the linear guide rail in the prior art.

[0024] Figure 2 is a schematic structural diagram of the vertical installation posture of the linear guide rail in the prior art.

[0025] Figure 3 is a schematic structural diagram of the reverse installation posture of the linear guide rail in the prior art.

[0026] Figure 4 is a schematic structural diagram of the wall-hanging installation posture of the linear guide rail in the prior art.

[0027] Figure 5 is a schematic structural diagram of Embodiment 1 of the present utility model.

[0028] Figure 6 is a schematic structural diagram of the reverse cover body in Embodiment 1 of the present utility model.

[0029] Figure 7 is Figure 6 a side view of

[0030] Figure 8 is Figure 6 a schematic structural diagram of the main oil path on the reverse cover body in

[0031] Figure 9 It is a schematic structural diagram of the oil plate in the first embodiment of the present utility model.

[0032] Figure 10 is Figure 9 a schematic structural diagram in another direction.

[0033] Figure 11 It is a schematic structural diagram of the oil plate in the second embodiment of the present utility model.

[0034] Figure 12 It is a schematic structural diagram of the linear guide rail adopting the first embodiment or the second embodiment.

[0035] In the figure: 1. Reverse cover body; 11. Front oil nozzle mounting hole; 12. First upper ball track; 13. First lower ball track; 14. Second upper ball track; 15. Second lower ball track; 16. Main oil passage; 161. First oil section; 162. Second oil section; 163. Third oil section; 164. Fourth oil section; 165. Fifth oil section; 166. Sixth oil section; 167. Seventh oil section; 17. Side oil nozzle mounting hole; 18. Side channel connection hole; 19. Side oil passage.

[0036] 2. Oil plate, 21. Oil passage inlet; 22. Oil passage outlet; 23. Arc edge; 24. Baffle edge.

[0037] 3. Polymer material film; 4. Guide rail body; 5. Slide block; 6. Terminal seal; 7. Oil nozzle; 8. Oil pipe interface. Specific embodiments

[0038] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic way, so they only show the components related to the present utility model.

[0039] Embodiment 1

[0040] As Figures 5 to 6 shown, a reverse cover structure with good lubrication includes a reverse cover body 1 and an oil plate 2. A front oil nozzle mounting hole 11 is provided in the middle of the upper part of the reverse cover body 1. A first upper ball track 12 and a first lower ball track 13 are successively arranged from top to bottom near one side, and a second upper ball track 14 and a second lower ball track 15 are successively arranged from top to bottom near the other side. A main oil passage 16 is arranged around the above four ball tracks on the reverse cover body 1, and the main oil passage 16 is communicated with the four ball tracks.

[0041] As Figure 6 and Figure 7As shown, a side oil injection nozzle mounting hole 17 is provided on one side wall of the reverse cover body 1. A side channel connection hole 18 is provided on one side of the front oil nozzle mounting hole 11. A side oil injection oil path 19 is provided between the side channel connection hole 18 and the side oil injection nozzle mounting hole 17, and the side oil injection oil path 19 is communicated with the main oil path 16. Specifically, internal threads are provided on the inner wall of the side oil injection nozzle mounting hole 17 to facilitate the installation of the oil nozzle.

[0042] Oil can be transported into the reverse cover body 1 through both the front oil nozzle mounting hole 11 and the side oil injection nozzle mounting hole 17. When side oil supply is required, the front oil nozzle mounting hole 11 is blocked with a plug. In this way, the oil can enter the main oil path 16 of the reverse cover body 1 from the side oil injection nozzle mounting hole 17 through the side oil injection oil path 19 to the side channel connection hole 18, and finally enter each ball track.

[0043] As Figure 8 and Figure 9 shown, the main oil path 16 includes a left oil path and a right oil path with the same structure and axially symmetric distribution. Any one of the oil paths includes a first oil path segment 161, a second oil path segment 162, a third oil path segment 163, a fourth oil path segment 164, a fifth oil path segment 165, a sixth oil path segment 166, and a seventh oil path segment 167 connected in sequence. Among them, the first oil path segment 161 is a straight line segment extending from the front oil nozzle mounting hole 11 to one side, guiding the oil to enter the main oil path 16 from the front oil nozzle mounting hole 11. The second oil path segment 162 is an inclined line segment forming an angle of 25° to 45° with the first oil path segment 161 to ensure that the oil can pass smoothly in various installation postures. The third oil path segment 163 is a transition arc segment between the second oil path segment 162 and the fourth oil path segment 164. The fourth oil path segment 164 is an inclined line segment forming an angle of 135° with the first oil path segment, guiding the oil from the main oil path to the middle position between the upper and lower ball tracks. The fifth oil path segment 165 is a straight line segment extending from the end of the fourth oil path segment 164 to ensure that the oil can enter the upper ball track and the lower ball track evenly. The sixth oil path segment 166 and the seventh oil path segment 167 are inclined line segments respectively communicated with any one of the upper ball track and the lower ball track, guiding the oil to enter the upper ball track and the lower ball track respectively. The distance between the paths of the sixth oil path segment 166 and the seventh oil path segment 167 is relatively close, ensuring that the oil can enter the ball track well and evenly regardless of the installation posture of the slider.

[0044] As Figure 10As shown in the figure, when the oil plate 2 only covers half of the main oil passage 16, it cooperates with the left oil passage or the right oil passage. When installed, an oil passage inlet 21 is provided at the lower part of one end of the oil plate 2 close to the front oil nozzle mounting hole 11, and an oil passage outlet 22 leading to the upper and lower ball paths on either side is provided below the other end of the oil plate 2. When installed in the state of the linear guide hanging on the wall, the main oil passage 16 (left oil passage or right oil passage) in the upper half is without oil. However, when this part is covered with the oil plate 2, a relatively enclosed and narrow space will be formed. With a certain pressure of the oil, a part of the oil will enter the oil passage covered by the oil plate 2 and rise along the thin oil passage until it reaches the two upper ball paths.

[0045] On both sides of the oil plate 2 corresponding to the second oil section 162, arc edges 23 are formed outward, which facilitates the assembly and disassembly of the oil plate 2 and can also play a good limiting role. On both sides of the oil plate 23, extension edges 24 are formed outward. Through the extension edges 24, there is no gap between the oil plate 2 and any side oil passage of the return cover body 1, preventing the oil from leaking outside the main oil passage 16 through the gap and ensuring a good lubrication effect.

[0046] Embodiment 2

[0047] As Figure 11 shown in the figure, the difference from Embodiment 1 is that when the oil plate 2 covers all the oil passages on the return cover body 1, it has a left section corresponding to the left oil passage, a right section corresponding to the right oil passage, and a connecting section corresponding to the side oil passage 19. A polymer material film 3 (which can be made of polyurethane, polyester, polyether, etc.) is provided in the oil plate 2. The structure of the polymer material film 3 is the same as that of the oil plate 2, but the width of the polymer material film 3 is smaller than the width of the oil plate 2, and the thickness of the polymer material film 3 is 0.15 mm to 0.25 mm. The polymer material film 3 can guide the oil to flow in the oil passage, ensuring that the oil evenly flows from the oil port into the four raceways. The integral structure of the oil plate 2 can ensure that the oil passage is in a sealed space and the oil will not leak, and the polymer material film 3 is used to guide the oil, so that the oil can flow naturally into the ball path without any pressure, ensuring that the oil can evenly reach the four ball paths in any posture of oil injection.

[0048] As Figure 11As shown in the figure, a linear guide rail includes a guide rail body 4. A slider 5 is provided on the guide rail body 4 and slides back and forth along it. On both sides of the slider 5, there is a lubrication-friendly reverse cover structure of Embodiment 1 or Embodiment 2. An end seal 6 is installed on the end face of the reverse cover body 1 of the reverse cover structure. An oil nozzle 7 is installed on the front oil nozzle mounting hole 11, and an oil pipe interface 8 is provided on the oil nozzle 7. The slider 5 of this linear guide rail has excellent lubrication and can be maintenance-free for a long time. It ensures that oil can flow well into the ball track of the slider 5 in horizontal, reverse, wall-mounted, vertical, inclined and other postures, and ensures that the reverse cover body 1 can be lubricated with grease or lubricating oil, and both lubrication methods can meet the use requirements. At the same time, the lubricating oil will not leak and will not flow outside the slider 5, reducing the oil loss of the slider 5 and enhancing the lubrication effect of the slider 5.

[0049] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can make various changes and modifications within the scope not deviating from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A lubrication - good reverse cover structure, characterized in that, Comprising: A reverse cover body (1), in the middle of its upper part, there is a front oil nozzle mounting hole (11), near one side, from top to bottom, there are a first upper ball track (12) and a first lower ball track (13) in sequence, near the other side, from top to bottom, there are a second upper ball track (14) and a second lower ball track (15) in sequence, on the reverse cover body (1), there is a main oil passage (16) surrounding the above four ball tracks, and the main oil passage (16) is communicated with the four ball tracks; An oil plate (2), which covers half of the main oil passage (16) or all the oil passages on the reverse cover body (1).

2. The well-lubricated reverse cover structure according to claim 1, characterized in that: On one side wall of the reverse cover body (1), there is a side oil nozzle mounting hole (17) for oil passage, on one side of the front oil nozzle mounting hole (11), there is a side passage connection hole (18), between the side passage connection hole (18) and the side oil nozzle mounting hole (17) for oil passage, there is a side oil passage (19) for oil passage, and the side oil passage (19) for oil passage is communicated with the main oil passage (16).

3. The well-lubricated reverse cover structure according to claim 2, wherein: On the inner wall of the side oil nozzle mounting hole (17) for oil passage, there is an internal thread.

4. The well-lubricated return cover structure according to claim 1, wherein: The main oil passage (16) includes a left oil passage and a right oil passage with the same structure and axisymmetric distribution, and any one of the oil passages includes a first oil section (161), a second oil section (162), a third oil section (163), a fourth oil section (164), a fifth oil section (165), a sixth oil section (166) and a seventh oil section (167) connected in sequence.

5. The well-lubricated return cover structure according to claim 4, wherein: The first oil section (161) is a straight line segment extending from the front oil nozzle mounting hole (11) to one side, the second oil section (162) is an oblique line segment forming an angle of 25° - 45° with the first oil section, the third oil section (163) is a transition arc section between the second oil section (162) and the fourth oil section (164), the fourth oil section (164) is an oblique line segment forming an angle of 135° with the first oil section (161), the fifth oil section (165) is a straight line segment extending from the end of the fourth oil section (164), and the sixth oil section (166) and the seventh oil section (167) are oblique line segments respectively communicated with the upper ball track and the lower ball track on any one side.

6. The well-lubricated return cover structure according to claim 4, wherein: The end of the fourth oil section (164) is located at the middle position between the upper ball track and the lower ball track on any one side.

7. The well-lubricated return cover structure according to claim 5, characterized in that: When the oil plate (2) covers half of the main oil passage (16), it cooperates with any one of the oil passages. When installed, at the lower part of one end of the oil plate (2) close to the front oil nozzle mounting hole (11), there is an oil passage inlet (21), and at the lower part of the other end of the oil plate (2), there is an oil passage outlet (22) leading to the upper ball track and the lower ball track on any one side.

8. The well-lubricated return cover structure according to claim 7, characterized in that: On both sides of the oil plate (2) corresponding to the second oil section (162), there are arc edges (23) formed outward, and on both sides of the oil plate (2), there are edge guards (24) formed by extending outward.

9. The well-lubricated return cover structure according to claim 5, wherein: When the oil plate (2) covers all the oil passages on the reverse cover body (1), it has a left section corresponding to the left oil passage, a right section corresponding to the right oil passage, and a connecting section corresponding to the side oil passage. A polymer material film (3) is provided in the oil plate (2). The structure of the polymer material film (3) is the same as that of the oil plate (2), but the width of the polymer material film (3) is smaller than the width of the oil plate (2).

10. The well-lubricated reverse cover structure according to claim 9, characterized in that: The thickness of the polymer material film (3) is 0.15 mm to 0.25 mm.

11. A linear guide rail, comprising a guide rail body (4), on which a slider (5) is arranged to slide back and forth along it, characterized in that: On both sides of the slider (5), there is a reverse cover structure with good lubrication as described in any one of claims 1 to 10. An end seal (6) is installed on the end face of the reverse cover body (1) of the reverse cover structure. An oil nozzle (7) is installed on the front oil nozzle mounting hole (11), and a tubing interface (8) is provided on the oil nozzle (7).

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