A ring rail mechanism

Abstract

The utility model relates to guide rail drive technology field especially relates to a kind of annular guide rail mechanisms, and its technical scheme's main point includes: annular bottom plate, for installing to equipment, the two sides of the annular bottom plate are equipped with outer guide edge and inner guide edge respectively;Slide platform assembly is respectively with the outer guide edge and the inner guide edge sliding fit;And rack assembly is respectively connected with the slide platform assembly and annular bottom plate, the rack assembly is used to drive the slide platform assembly reciprocating sliding on annular bottom plate, the scheme that the present application can reduce annular guide rail setting cost is provided.

Description

Technical Field

[0001] This utility model relates to the field of guide rail transmission technology, and in particular to a ring guide rail mechanism. Background Technology

[0002] With the continuous development of industrial automation technology, guide rail mechanisms are widely used in automated equipment and are applicable to a variety of fields, such as semiconductors, lithium battery new energy, printed circuit boards, LCD panels, and electronic manufacturing. Among them, guide rail mechanisms, as motion components that provide linear or rotary motion guidance for automated equipment, are core components in the field of mechanical transmission and motion control.

[0003] Currently, circular guide rail mechanisms can output circular motion and are suitable for equipment with arc-shaped motion paths. However, existing circular guide rail mechanisms still have many shortcomings. For example, the current standard circular guide rail has many components, resulting in excessive cost. Under some complex installation conditions, such as vertical installation, the large number of components makes installation complicated and difficult, ultimately making the cost-effectiveness of the equipment not high. Therefore, there is a lack of a solution in the existing technology that can reduce the cost of circular guide rail installation, so improvement is needed.

[0004] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0005] This invention provides a ring guide rail mechanism to solve the problem of high cost of setting up ring guide rails in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A ring-shaped guide rail mechanism, comprising:

[0008] An annular base plate is used for mounting onto equipment, and the annular base plate has an outer guide edge and an inner guide edge on both sides respectively;

[0009] The slide assembly is slidably engaged with the outer guide edge and the inner guide edge, respectively;

[0010] The rack assembly is connected to the slide assembly and the annular base plate, respectively. The rack assembly is used to drive the slide assembly to slide back and forth on the annular base plate.

[0011] Preferably, the slide assembly includes:

[0012] The mounting base plate is connected to the rack assembly;

[0013] The outer roller module is disposed on one side of the mounting base plate and slides in cooperation with the outer guide edge;

[0014] And an inner roller module, which is located on the other side of the mounting base plate and slides in cooperation with the inner guide edge.

[0015] Preferably, the outer roller module includes a first vertical roller, a second vertical roller, and an outer roller respectively disposed on the mounting base plate;

[0016] The first vertical roller and the second vertical roller respectively roll and abut against the opposite sides of the outer guide edge;

[0017] The outer roller rolls against the outer periphery of the outer guide edge.

[0018] Preferably, it further includes a first fine-tuning connecting block, wherein the first vertical roller is rotatably disposed on the first fine-tuning connecting block, and the first fine-tuning connecting block is adjustablely disposed on the mounting base plate along a direction perpendicular to the mounting base plate.

[0019] Preferably, the inner roller module includes a third vertical roller, a fourth vertical roller, and an inner roller respectively disposed on the mounting base plate;

[0020] The third vertical roller and the fourth vertical roller respectively roll and abut against the opposite sides of the inner guide edge;

[0021] The inner roller rolls against the inner circumference of the inner guide edge.

[0022] Preferably, it further includes a second fine-tuning connecting block, the third vertical roller is rotatably disposed on the second fine-tuning connecting block, and the second fine-tuning connecting block is adjustablely disposed on the mounting base plate along a direction perpendicular to the mounting base plate.

[0023] Preferably, it further includes a third fine-tuning connecting block, wherein the inner roller is rotatably disposed on the third fine-tuning connecting block, and the third fine-tuning connecting block is adjustablely disposed on the mounting base plate along a direction parallel to the mounting base plate.

[0024] Preferably, the rack assembly includes:

[0025] The rack body is fixedly mounted on the annular base plate;

[0026] The drive source is located in the slide assembly;

[0027] And a gear, connected to the drive source, the gear meshing with the rack body.

[0028] Preferably, the driving source includes:

[0029] Drive motor;

[0030] A reducer is fixedly mounted on the slide assembly and has an input end and an output end. The gear is connected to the output end of the reducer, and the drive motor is connected to the input end of the reducer.

[0031] Preferably, the assembly also includes a limiting block, which is disposed on the annular base plate and near the end of the rack assembly, and the limiting block abuts against the slide assembly.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The annular guide rail mechanism provided by this utility model has an annular base plate that can directly provide sliding guidance for the slide table assembly. Compared with the standard annular guide rail, it is equivalent to eliminating the track and slider in the standard annular guide rail. At this time, under the drive of the rack assembly, the slide table assembly can be driven to move on the annular base plate. Thus, the overall number of main components of the solution is small, which can reduce component costs and installation costs. The cost of setting up the annular guide rail is reduced, and the cost-effectiveness of the equipment using this solution is improved.

[0034] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the annular guide rail mechanism provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of the annular base plate and the slide assembly provided in this embodiment of the utility model;

[0038] Figure 3 This is a schematic diagram of the slide assembly provided in an embodiment of the present invention;

[0039] Figure 4This is a schematic diagram of the assembly relationship of the slide assembly provided in this embodiment of the utility model;

[0040] Figure 5 This is a schematic diagram of the structure of the slide assembly after the hidden part of the structure is provided in the embodiment of this utility model;

[0041] Figure 6 This is a schematic diagram of the hidden portion of the slide assembly provided in this embodiment of the present invention from another perspective;

[0042] Figure 7 This is a schematic diagram of the annular guide rail mechanism provided in an embodiment of the present invention from another perspective.

[0043] Figure label:

[0044] 1. Annular base plate; 11. Outer guide edge; 12. Inner guide edge;

[0045] 2. Slide assembly; 21. Mounting base plate; 22. Outer roller module; 221. First vertical roller; 222. Second vertical roller; 223. Outer roller; 23. Inner roller module; 231. Third vertical roller; 232. Fourth vertical roller; 233. Inner roller;

[0046] 3. Rack assembly; 31. Rack body; 32. Drive source; 321. Drive motor; 322. Reducer; 33. Gear;

[0047] 4. Wing plate; 5. First fine-tuning connecting block; 6. Second fine-tuning connecting block; 7. Third fine-tuning connecting block; 8. Receiving groove; 9. Long strip hole; 10. Limiting block. Detailed Implementation

[0048] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0049] In the description of this utility model, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component that is centrally positioned therein. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be a component that is centrally positioned therein.

[0050] Furthermore, terms such as "long," "short," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientational configuration. Therefore, they should not be construed as limitations of this utility model.

[0051] The following is in conjunction with the appendix Figure 1-7 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0052] Please refer to Figure 1 This utility model provides a ring guide rail mechanism to solve the problem of high installation cost of standard guide rails. The ring guide rail mechanism provided in this embodiment includes a ring base plate 1, a slide assembly 2, and a rack assembly 3.

[0053] In this embodiment, the annular base plate 1 has an arc-shaped extended profile and an overall flat thin plate structure. The annular base plate 1 is used for mounting to the equipment. Typically, threaded holes can be provided on the annular base plate 1, and it can be fixed to the equipment by threaded fasteners. Based on the above configuration, combined with... Figure 2 The annular base plate 1 has an outer guide edge 11 and an inner guide edge 12 on its two sides. The outer guide edge 11 is located on the outer side of the annular base plate 1, and the inner guide edge 12 is located on the inner side of the annular base plate 1. Both the outer guide edge 11 and the inner guide edge 12 are arc-shaped and have the same degree of curvature. The radius of the circle containing the outer guide edge 11 is greater than the radius of the circle containing the inner guide edge 12. Therefore, the outer guide edge 11 is located on the outer side of the annular base plate 1, and the inner guide edge 12 is located on the inner side of the annular base plate 1.

[0054] The slide assembly 2 is used for mounting the target device. The target device can be understood as a device that needs to achieve arc motion on the equipment, such as a detection head or a robotic arm. The specific type of target device is not limited here. In addition, the slide assembly 2 is slidably engaged with the outer guide edge 11 and the inner guide edge 12 respectively. The outer guide edge 11 and the inner guide edge 12 provide guidance for the slide assembly 2. Under the guidance of the outer guide edge 11 and the inner guide edge 12, the slide assembly 2 can slide back and forth along the extension direction of the annular base plate 1.

[0055] At the same time, looking back Figure 1 The rack assembly 3 is connected to the slide assembly 2 and the annular base plate 1 respectively. The rack assembly 3 can output power and is used to drive the slide assembly 2 to slide back and forth on the annular base plate 1, thereby driving the target device to move in annular displacement.

[0056] Understandably, standard guide rails typically require additional tracks, usually two or more, mounted on a base plate. Slider blocks are mounted on the tracks and connected to a sliding table. During assembly, the overall structure requires multiple screw fixing points, resulting in numerous components and complex assembly work. In the above implementation scheme, to reduce the cost of setting up the annular guide rail, outer guide edges 11 and inner guide edges 12 are first set on opposite sides of the annular base plate 1. This allows the annular base plate 1 itself to provide guidance, eliminating the need for tracks and sliders found in standard guide rails. This reduces both the installation cost and component cost of the annular guide rail mechanism, while also making the structure more compact.

[0057] Furthermore, referring to Figure 2 The slide assembly 2 includes a mounting base plate 21, an outer roller module 22, and an inner roller module 23. The mounting base plate 21 is also a thin plate structure. The mounting base plate 21 is parallel to the annular base plate 1 and is connected to the rack assembly 3. The mounting base plate 21 is used for the fixed installation of the target device and plays a load-bearing role.

[0058] In addition, the outer roller module 22 is disposed on one side of the mounting base plate 21 and slides in cooperation with the outer guide edge 11, while the inner roller module 23 is disposed on the other side of the mounting base plate 21 and slides in cooperation with the inner guide edge 12.

[0059] Based on the above configuration, the outer roller module 22 and the inner roller module 23 can provide a rolling guide effect for the mounting base plate 21, making the mounting base plate 21 move more smoothly and easily.

[0060] Furthermore, referring to Figure 3 and Figure 4 To ensure that the mounting base plate 21 has good overall displacement accuracy, the outer roller module 22 includes a first vertical roller 221, a second vertical roller 222 and an outer roller 223 respectively disposed on the mounting base plate 21.

[0061] In one embodiment, to facilitate the installation of the outer roller module 22, wing plates 4 are respectively provided on both sides of the mounting base plate 21. The wing plates 4 are perpendicular to the body of the mounting base plate 21. The first vertical roller 221, the second vertical roller 222 and the outer roller 223 can be directly installed on the wing plates 4, and then directly installed on the mounting base plate 21 through the wing plates 4.

[0062] In another embodiment, the side of the mounting base plate 21 can be bent to form a wing plate 4. The arrangement of the wing plate 4 is not limited here. As long as it can provide an assembly position for the first vertical roller 221, the second vertical roller 222 and the outer roller 223, it should be included in the scope of this solution.

[0063] In this embodiment, the first vertical roller 221, the second vertical roller 222, and the outer roller 223 have similar structures, all of which are roller structures. Based on this, the first vertical roller 221 and the second vertical roller 222 roll and abut against the opposite sides of the outer guide edge 11, respectively. At this time, the first vertical roller 221 and the second vertical roller 222 can clamp the opposite sides of the annular base plate 1 in a direction perpendicular to the annular base plate 1, making it difficult for the slide assembly 2 to loosen from the annular base plate 1, and making the guide structure more stable.

[0064] In addition, the outer roller 223 rolls against the outer peripheral side of the outer guide edge 11. It should be explained that the outer peripheral side referred to here can be understood as the peripheral side located outside the annular base plate 1. By rolling against the outer peripheral side of the outer guide edge 11, the slide assembly 2 can be guided by the outer guide edge 11 to ensure that the slide assembly 2 is not easily deviated from its movement trajectory.

[0065] Furthermore, during actual installation, due to the influence of assembly tolerances, if the first vertical roller 221, the second vertical roller 222, and the outer roller 223 are directly placed on the wing plate 4, there may be errors, causing the first vertical roller 221, the second vertical roller 222, and the outer roller 223 to fail to fit tightly with the annular base plate 1, which will cause the slide assembly 2 to shake when moving, affecting the displacement accuracy.

[0066] Based on this, combined Figure 4 It also includes a first fine-tuning connecting block 5, a first vertical roller 221 rotatably disposed on the first fine-tuning connecting block 5, and the first fine-tuning connecting block 5 is adjustablely disposed on the mounting base plate 21 along a direction perpendicular to the mounting base plate 21.

[0067] Specifically, to enable the first fine-tuning connecting block 5 to be adjusted along the vertical direction of the mounting base plate 21, a receiving groove 8 and a threaded hole can first be opened on the wing plate 4. The receiving groove 8 extends along the vertical direction of the annular base plate 1, and the opening size of the receiving groove 8 is larger than the structural length of the first fine-tuning connecting block 5. The first fine-tuning connecting block 5 is located in the receiving groove 8 and can move and adjust inside it. Next, an elongated hole 9, such as a waist-shaped hole, is opened on the first fine-tuning connecting block 5. At this time, a bolt is passed through the elongated hole 9 and threaded to the threaded hole of the wing plate 4. Since the elongated hole 9 provides adjustment space for the first fine-tuning connecting block 5, the first fine-tuning connecting block 5 can be moved by controlling the tightness of the bolt, thereby realizing the fine-tuning action.

[0068] Based on the above configuration, by adding a first fine-tuning connecting block 5 between the first vertical roller 221 and the mounting base plate 21, the distance between the first fine-tuning connecting block 5 and the mounting base plate 21 can be controlled, thereby controlling the distance between the first vertical roller 221 and the second vertical roller 222. This allows the first vertical roller 221 and the second vertical roller 222 to fit tightly against the opposite sides of the outer guide edge 11, making the structure less prone to loosening and ensuring guiding accuracy.

[0069] Reference Figure 5 and Figure 6 To achieve the guiding function on the other side of the mounting base plate 21, the inner roller module 23 includes a third vertical roller 231, a fourth vertical roller 232 and an inner roller 233 respectively disposed on the mounting base plate 21.

[0070] In this embodiment, a wing plate 4 is also provided on the side of the mounting base plate 21 near the inner guide edge 12. The third vertical roller 231, the fourth vertical roller 232, and the inner roller 233 are all rotatably mounted on the wing plate 4. Based on this, the third vertical roller 231 and the fourth vertical roller 232 roll and abut against the opposite sides of the inner guide edge 12 respectively. At this time, the third vertical roller 231 and the fourth vertical roller 232 can clamp the annular base plate 1 in a direction perpendicular to the annular base plate 1. Combined with the first vertical roller 221 and the second vertical roller 222, a vertical guide structure that can clamp the two sides of the annular base plate 1 is formed. The structure is reliable and stable.

[0071] In addition, the inner roller 233 rolls against the inner circumferential side of the inner guide edge 12. It should be explained that the inner circumferential side here can be understood as the circumferential side located inside the annular base plate 1. Here, by rolling against the inner circumferential side of the inner guide edge 12, the slide assembly 2 can be guided by the inner guide edge 12. Combined with the outer roller 223, the slide assembly 2 can be guided on both the inner and outer sides of the annular base plate 1 at the same time. Ultimately, the mounting base plate 21 can only slide along the extension direction of the annular base plate 1, and the motion accuracy and stability are significantly improved.

[0072] During actual installation, due to the influence of assembly tolerances, if the third vertical roller 231, the fourth vertical roller 232, and the inner roller 233 are directly placed on the wing plate 4, there may be errors, which may cause the third vertical roller 231, the fourth vertical roller 232, and the inner roller 233 to not fit tightly with the annular base plate 1, which will cause the slide assembly 2 to shake when moving, affecting the displacement accuracy.

[0073] Furthermore, it also includes a second fine-tuning connecting block 6, and a third vertical roller 231 is rotatably disposed on the second fine-tuning connecting block 6. The second fine-tuning connecting block 6 is adjustablely disposed on the mounting base plate 21 along a direction perpendicular to the mounting base plate 21.

[0074] It is understandable that the second fine-tuning connecting block 6 is set in the same way as the first fine-tuning connecting block 5, which is also achieved by opening an elongated hole 9 and using bolts. The difference is that when the second fine-tuning connecting block 6 is set, the elongated hole 9 is set on the wing plate 4. This setting can achieve the same technical effect, which will not be elaborated here.

[0075] Based on the above settings, under the adjustment of the second fine-tuning connecting block 6, the distance between the third vertical roller 231 and the fourth vertical roller 232 can be controlled, so that the two are closely attached to the opposite sides of the inner guide edge 12, the structural error is eliminated, and the structural jamming can be avoided, and the guiding accuracy is guaranteed.

[0076] Furthermore, it also includes a third fine-tuning connecting block 7, with the inner roller 233 rotatably disposed on the third fine-tuning connecting block 7, and the third fine-tuning connecting block 7 being adjustablely disposed on the mounting base plate 21 along a direction parallel to the mounting base plate 21.

[0077] It is understandable that the specific setting of the third fine-tuning connecting block 7 is similar to that of the first fine-tuning connecting block 5 and the second fine-tuning connecting block 6. The difference is that the elongated hole 9 is opened on the mounting base plate 21, and the length direction of the elongated hole 9 is parallel to the mounting base plate 21. Therefore, the third fine-tuning connecting block 7 can be displaced and adjusted along the parallel direction of the mounting base plate 21 to achieve fine-tuning action.

[0078] Specifically, one end of the elongated hole 9 on the mounting base plate 21 faces the location of the outer roller module 22. At this time, by adjusting the third fine-tuning connecting block 7, the distance between the outer roller 223 and the inner roller 233 can be controlled, so that the two are tightly attached to the inner and outer circumferences of the annular base plate 1, eliminating structural errors and preventing structural jamming, thus ensuring guiding accuracy.

[0079] Reference Figure 7 To drive the slide assembly 2 to move, the rack assembly 3 provided in this application embodiment includes a rack body 31, a drive source 32, and a gear 33.

[0080] The rack body 31 also has an arc-shaped extended profile, and its arc degree is the same as that of the annular base plate 1. The rack body 31 is fixedly mounted on the annular base plate 1 and located between the annular base plate 1 and the slide assembly 2.

[0081] The drive source 32 is located on the slide assembly 2 and is used to output power. The gear 33 is connected to the drive source 32. The drive source 32 can drive the gear 33 to rotate. On this basis, the gear 33 meshes with the rack body 31. During the rotation of the gear 33, it can obtain the thrust to move the slide assembly 2, thereby driving the slide assembly 2 to move.

[0082] Continue to refer to Figure 7 In this embodiment, the drive source 32 includes a drive motor 321 and a reducer 322. The drive motor 321 may be a servo motor, which can output forward and reverse power to control the slide assembly 2 to move back and forth. The reducer 322 is fixedly installed on the slide assembly 2, and the drive motor 321 is installed adjacent to the reducer 322. The reducer 322 has an input end and an output end. The gear 33 is connected to the output end of the reducer 322, and the drive motor 321 is connected to the input end of the reducer 322.

[0083] Based on the above configuration, the reducer 322, in conjunction with the drive motor 321, can smoothly and efficiently transmit power to the gear 33, which is beneficial for controlling displacement accuracy.

[0084] Reference Figure 7 It also includes a limiting block 10, which is set on the annular base plate 1. Usually, the limiting block 10 is fixedly set on the annular base plate 1 and close to the end of the rack assembly 3. It should be explained that the end of the rack assembly 3 can also be understood as the end of the rack body 31. The limiting block 10 abuts and cooperates with the slide assembly 2, thereby restricting the slide assembly 2 from loosening from the annular base plate 1, and the safety and stability of the structure are further improved.

[0085] The embodiments of this application have the following beneficial effects:

[0086] 1. It can reduce the setup cost of the ring guide rail mechanism and make the structure more compact;

[0087] 2. It is easy to adjust, the structure is not easy to jam, and it can achieve high guiding accuracy, which meets the needs of high-precision equipment.

[0088] 3. The power transmission is smooth and the displacement accuracy is easy to control.

[0089] Therefore, the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ring rail mechanism, characterized by, include: An annular base plate (1) is used to be installed on the equipment. The annular base plate (1) is provided with an outer guide edge (11) and an inner guide edge (12) on both sides. The slide assembly (2) is slidably engaged with the outer guide edge (11) and the inner guide edge (12) respectively; And a rack assembly (3), which is connected to the slide assembly (2) and the annular base plate (1) respectively. The rack assembly (3) is used to drive the slide assembly (2) to slide back and forth on the annular base plate (1).

2. The ring rail mechanism according to claim 1, characterized in that The slide assembly (2) includes: The mounting base plate (21) is connected to the rack assembly (3); The outer roller module (22) is disposed on one side of the mounting base plate (21) and slides in cooperation with the outer guide edge (11); And an inner roller module (23) is disposed on the other side of the mounting base plate (21) and slides in cooperation with the inner guide edge (12).

3. Ring rail mechanism according to claim 2, characterized in that The outer roller module (22) includes a first vertical roller (221), a second vertical roller (222), and an outer roller (223) respectively disposed on the mounting base plate (21); The first vertical roller (221) and the second vertical roller (222) respectively roll and abut against the opposite sides of the outer guide edge (11); The outer roller (223) rolls and abuts against the outer peripheral side of the outer guide edge (11).

4. Ring rail mechanism according to claim 3, characterized in that It also includes a first fine-tuning connecting block (5), the first vertical roller (221) is rotatably disposed on the first fine-tuning connecting block (5), and the first fine-tuning connecting block (5) is adjustablely disposed on the mounting base plate (21) along a direction perpendicular to the mounting base plate (21).

5. The ring rail mechanism according to claim 2, wherein The inner roller module (23) includes a third vertical roller (231), a fourth vertical roller (232), and an inner roller (233) respectively disposed on the mounting base plate (21); The third vertical roller (231) and the fourth vertical roller (232) respectively roll and abut against the opposite sides of the inner guide edge (12); The inner roller (233) rolls and abuts against the inner circumference of the inner guide edge (12).

6. The annular guide rail mechanism according to claim 5, characterized in that, It also includes a second fine-tuning connecting block (6), the third vertical roller (231) is rotatably disposed on the second fine-tuning connecting block (6), and the second fine-tuning connecting block (6) is adjustablely disposed on the mounting base plate (21) along a direction perpendicular to the mounting base plate (21).

7. The annular guide rail mechanism according to claim 5, characterized in that, It also includes a third fine-tuning connecting block (7), the inner roller (233) is rotatably disposed on the third fine-tuning connecting block (7), and the third fine-tuning connecting block (7) is adjustablely disposed on the mounting base plate (21) in a direction parallel to the mounting base plate (21).

8. The annular guide rail mechanism according to claim 1, characterized in that, The rack assembly (3) includes: The rack body (31) is fixedly mounted on the annular base plate (1); A drive source (32) is disposed on the slide assembly (2); And a gear (33) connected to the drive source (32), the gear (33) meshing with the rack body (31).

9. The annular guide rail mechanism according to claim 8, characterized in that, The driving source (32) includes: Drive motor (321); And a reducer (322) is fixedly installed on the slide assembly (2), having an input end and an output end. The gear (33) is connected to the output end of the reducer (322), and the drive motor (321) is connected to the input end of the reducer (322).

10. The annular guide rail mechanism according to claim 1, characterized in that, It also includes a limiting block (10), which is disposed on the annular base plate (1) and close to the end of the rack assembly (3), and the limiting block (10) abuts against the slide assembly (2).

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