Guide rail dustproof mechanism

Abstract

A guide rail dustproof mechanism, comprising a base, a sliding table, a driving member and a dustproof assembly, the base is provided with a guide rail arranged from front to back, the sliding table is slidingly connected to the guide rail and is driven by the driving member to move along the guide rail, the base is provided with a front cover and a rear cover located in front of and behind the guide rail respectively, the dustproof assembly comprises a front flexible cover, a rear flexible cover and an air supply machine, the front flexible cover is connected between the front cover and the sliding table to cover the front section of the guide rail, the rear flexible cover is connected between the sliding table and the rear cover to cover the rear section of the guide rail, the sliding table has an inner cavity communicating with the front flexible cover and the rear flexible cover, the front cover or the rear cover is provided with an air supply hole, and the air supply machine is connected to the air supply hole and is used for supplying air to the front flexible cover or the rear flexible cover. The above scheme not only prevents external pollutants from invading from the assembly gap, but also enables the pollutants originally on the guide rail to be discharged from the assembly gap along the airflow, thereby achieving effective protection of the guide rail.

Description

Technical Field

[0001] This utility model relates to the technical field of dust prevention technology, and more specifically to a dust prevention mechanism for guide rails. Background Technology

[0002] Linear guides are transmission components widely used in CNC machine tools, automated equipment, precision measuring instruments and other fields. They typically consist of a fixed base, a guide rail mounted on the base, and a slide table that can slide along the guide rail. Driven by components such as ball screw motors, the slide table achieves high-precision motion control.

[0003] In existing technologies, a sliding fit is typically used between the slide table and the guide rail. However, because the guide rail has exposed sections not covered by the slide table, it is highly susceptible to contaminants such as dust, chips, and coolant from the work environment. These contaminants, after adhering to the guide rail surface, enter the mating surface between the guide rail and the slide table during movement, significantly accelerating wear between them. This not only reduces the accuracy and stability of the entire motion system but also causes problems such as sliding jamming and abnormal noises during slide table movement.

[0004] To address these issues, the conventional approach is to add a dust cover to the outside of the guide rail. However, since the slide needs to move along the guide rail, there must be assembly gaps in the dust cover. Under harsh operating conditions, tiny dust particles can still enter through these gaps and adhere to the guide rail surface, causing wear. Furthermore, if external contaminants accumulate inside the dust cover, it may actually hinder the normal movement of the slide. Therefore, there is an urgent need for a dustproof mechanism that can effectively prevent contaminants from entering the guide rail and has a certain ability to remove contaminants that have already entered. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that, due to the assembly gaps left on the dust cover, tiny dust particles can still enter the interior through the assembly gaps of the dust cover under harsh working conditions and adhere to the surface of the guide rail, causing wear problems. In addition, once external pollutants accumulate inside the dust cover, they may even hinder the normal movement of the slide.

[0006] To address the aforementioned problems, this utility model provides a guide rail dustproof mechanism, comprising a base, a slide, a drive component, and a dustproof assembly. The base is provided with a guide rail arranged from front to back. The slide is slidably connected to the guide rail and moved along the guide rail by the drive component. The base is provided with a front cover and a rear cover located in front of and behind the guide rail, respectively. The dustproof assembly includes a front flexible cover, a rear flexible cover, and an air supply unit. The front flexible cover is connected between the front cover and the slide to cover the front section of the guide rail, and the rear flexible cover is connected between the slide and the rear cover to cover the rear section of the guide rail. The slide has an inner cavity connecting the front flexible cover and the rear flexible cover. The front cover or the rear cover is provided with an air supply hole, and the air supply unit is connected to the air supply hole and used to supply air to the front flexible cover or the rear flexible cover.

[0007] Compared with existing technologies, the above solution provides front and rear flexible covers to protect the front and rear sections of the guide rail, respectively. Furthermore, by creating an inner cavity in the slide table, the interiors of the front and rear flexible covers are interconnected. When the air supply unit supplies air through the air supply port, the interiors of the front flexible cover, the slide table's inner cavity, and the rear flexible cover create a pressurized environment relative to the outside. This not only prevents external contaminants from intruding through the assembly gaps but also allows contaminants originally located on the guide rail to be discharged through the assembly gaps with the airflow, thus achieving effective protection for the guide rail.

[0008] In an improved embodiment, the slide has sealing protrusions on the side facing the base, located on the left and right sides of the guide rail respectively. The sealing protrusions extend from front to back and slide against the base. The inner cavity is formed by the slide, the sealing protrusions and the base, thereby improving the sealing performance of the guide rail between the slide and the base through the sealing strips.

[0009] In an improved embodiment, the sealing strip has a chamfer on the side near the base, thereby reducing the contact area between the sealing strip and the base and reducing wear on the sealing strip.

[0010] In an improved design, the sealing strip is made of rubber, thus possessing a certain degree of elastic deformation capability to ensure better sealing.

[0011] In an improved embodiment, both the front and rear flexible covers are corrugated telescopic dust covers, thereby ensuring that the front and rear flexible covers can be expanded or compressed accordingly when the slide moves back and forth.

[0012] In an improved embodiment, the guide rails are two in number and spaced apart on the left and right sides of the base, and the drive unit is positioned between the two guide rails from front to back, thereby making the layout more reasonable and improving the movement stability of the slide table.

[0013] In an improved embodiment, the driving component includes a motor and a lead screw. The lead screw is rotatably connected to the base with the back-and-forth direction as its axis. The slide is provided with a ball screw hole that is screwed to the lead screw. The motor is used to drive the rotation of the lead screw, thereby driving the slide to move back and forth through the rotation of the lead screw. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front side of a guide rail dustproof mechanism;

[0015] Figure 2 This is a schematic diagram of the rear side of a guide rail dustproof mechanism;

[0016] Figure 3 This is a side view schematic diagram of a guide rail dustproof mechanism;

[0017] Figure 4 For along Figure 3 Cross-sectional view of section AA in the middle;

[0018] Figure 5 For along Figure 4 sectional view of the BB section line;

[0019] Figure 6 for Figure 5 A magnified view of a portion of region C.

[0020] Explanation of reference numerals in the attached figures.

[0021] 1. Base; 11. Guide rail; 12. Front cover; 13. Rear cover; 14. Air supply port; 2. Slide table; 21. Inner cavity; 22. Sealing protrusion; 3. Drive component; 31. Motor; 32. Lead screw; 4. Front flexible cover; 5. Rear flexible cover. Detailed Implementation

[0022] It should be understood by those skilled in the art that the following embodiments are merely illustrative of the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0023] In the following description of the embodiments, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0024] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Please see Figures 1-6 The present invention provides a guide rail dustproof mechanism, comprising a base 1, a slide 2, a drive component 3, and a dustproof component. The base 1 is provided with a guide rail 11 arranged from front to back. The slide 2 is slidably connected to the guide rail 11 and is driven by the drive component 3 to move along the guide rail 11. The base 1 is provided with a front cover 12 and a rear cover 13 located in front of and behind the guide rail 11, respectively. The dustproof component includes a front flexible cover 4, a rear flexible cover 5, and an air supply unit. The front flexible cover 4 is connected between the front cover 12 and the slide 2 to cover the front section of the guide rail 11. The rear flexible cover 5 is connected between the slide 2 and the rear cover 13 to cover the rear section of the guide rail 11. The slide 2 has an inner cavity 21 that connects the front flexible cover 4 and the rear flexible cover 5. The front cover 12 or the rear cover 13 is provided with an air supply hole 14. The air supply unit is connected to the air supply hole 14 and is used to supply air to the front flexible cover 4 or the rear flexible cover 5.

[0027] Compared with the prior art, the above solution provides front flexible cover 4 and rear flexible cover 5 to cover and protect the front and rear sections of the guide rail 11, respectively. At the same time, by setting an inner cavity 21 in the slide table 2, the interiors of the front flexible cover 4 and the rear flexible cover 5 are connected to each other. When the air supply machine supplies air through the air supply hole 14, the interiors of the front flexible cover 4, the inner cavity 21 of the slide table 2, and the rear flexible cover 5 form a pressurized environment relative to the outside. This not only prevents external pollutants from entering through the assembly gap, but also allows pollutants that were originally located on the guide rail 11 to be discharged from the assembly gap with the airflow, thus achieving effective protection for the guide rail 11.

[0028] In this embodiment, the air supply device (not shown in the figure) can be an air pump, or any device in the prior art that can supply air. This design does not limit this. In this embodiment, the air supply hole 14 is provided on the rear cover 13, and the air outlet of the air supply device is connected to the air supply hole 14 to achieve air supply.

[0029] In this embodiment, the slide 2 is provided with sealing protrusions 22 on the side facing the base 1, located on the left and right sides of the guide rail 11 respectively. The sealing protrusions 22 extend from front to back and slide against the base 1. The inner cavity 21 is formed by the slide 2, the sealing protrusions 22 and the base 1, thereby improving the sealing performance of the guide rail 11 between the slide 2 and the base 1 through the sealing strips.

[0030] Furthermore, the sealing protrusion 22 has a chamfer on the side near the base 1, thereby reducing the contact area between the sealing protrusion 22 and the base 1 and reducing the wear of the sealing protrusion 22.

[0031] The sealing strip is preferably made of rubber, which provides a certain degree of elastic deformation and ensures better sealing.

[0032] In this embodiment, both the front flexible cover 4 and the rear flexible cover 5 are corrugated telescopic dust covers, thereby ensuring that the front flexible cover 4 and the rear flexible cover 5 can be expanded or compressed accordingly when the slide table 2 moves back and forth.

[0033] In this embodiment, there are two guide rails 11, which are spaced apart on the left and right sides of the base 1. The drive unit 3 is arranged between the two guide rails 11 from front to back, so that the layout is reasonable and the movement stability of the slide table 2 is improved.

[0034] In this embodiment, the driving component 3 includes a motor 31 and a lead screw 32. The lead screw 32 is rotatably connected to the base 1 with the front-back direction as the axis. The slide table 2 is provided with a ball screw hole that is screwed to the lead screw 32. The motor 31 is used to drive the rotation of the lead screw 32, thereby driving the slide table 2 to move back and forth through the rotation of the lead screw 32.

[0035] It should be noted that in the description of this application, the terms "inner" and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. All directional indications (such as up, down, left, right, front, back, inner, and outer) are only used to explain the relative positional relationships and movement between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A dustproof mechanism for guide rails, characterized in that, The system includes a base (1), a slide (2), a drive unit (3), and a dustproof assembly. The base (1) has a guide rail (11) arranged from front to back. The slide (2) is slidably connected to the guide rail (11) and moved along the guide rail (11) by the drive unit (3). The base (1) has a front cover (12) and a rear cover (13) located in front of and behind the guide rail (11), respectively. The dustproof assembly includes a front flexible cover (4), a rear flexible cover (5), and an air supply unit. The front flexible cover (4) is connected to... The front cover (12) and the slide (2) are connected to cover the front section of the guide rail (11). The rear flexible cover (5) is connected between the slide (2) and the rear cover (13) to cover the rear section of the guide rail (11). The slide (2) has an inner cavity (21) that connects the front flexible cover (4) and the rear flexible cover (5). The front cover (12) or the rear cover (13) is provided with an air supply hole (14). The air supply machine is connected to the air supply hole (14) and is used to supply air to the front flexible cover (4) or the rear flexible cover (5).

2. The dustproof mechanism for guide rails according to claim 1, characterized in that, The slide (2) is provided with sealing protrusions (22) on the side facing the base (1), which are located on the left and right sides of the guide rail (11). The sealing protrusions (22) extend from front to back and slide against the base (1). The inner cavity (21) is formed by the slide (2), the sealing protrusions (22) and the base (1).

3. The guide rail dustproof mechanism according to claim 2, characterized in that, The sealing protrusion (22) has a chamfer on the side near the base (1).

4. The guide rail dustproof mechanism according to claim 2 or 3, characterized in that, The sealing strip is made of rubber.

5. The dustproof mechanism for guide rails according to claim 1, characterized in that, Both the front flexible cover (4) and the rear flexible cover (5) are corrugated telescopic dust covers.

6. The dustproof mechanism for guide rails according to claim 1, characterized in that, The guide rails (11) are two in number and are spaced apart on the left and right sides of the base (1). The drive unit (3) is arranged from front to back between the two guide rails (11).

7. The guide rail dustproof mechanism according to claim 1 or 6, characterized in that, The driving component (3) includes a motor (31) and a lead screw (32). The lead screw (32) is rotatably connected to the base (1) with the front-back direction as the axis. The slide (2) is provided with a ball screw hole that is screwed to the lead screw (32). The motor (31) is used to drive the rotation of the lead screw (32).

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