Sealing sliding mechanism for vacuum cabin
By using the V-shaped sealing ring structure of linear bearings and guide shafts in the lifting and lowering mechanism of the vacuum chamber, the contradiction between sealing and driving force loss is solved, and the high sealing and low driving force loss of the vacuum chamber are achieved, which is suitable for vacuum. The lifting and lowering movement of the environment.
Patent Information
- Application Number
- CN202421252412.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-06-03
AI Technical Summary
When the existing vacuum chamber lifting and moving mechanism improves the sealing, it leads to an increase in driving force loss and cannot meet the process requirements.
A sealing sliding mechanism including a linear bearing and a guide shaft is adopted. By providing a V-shaped sealing ring on the upper and lower sides of the linear bearing, the deformation elasticity and V-shaped structure of the inner ring are used to achieve sealing, reducing driving force loss.
The height seal of the vacuum chamber is achieved, while reducing the loss of lifting and moving driving force, which is suitable for lifting and moving mechanisms in the vacuum chamber.
Smart Images
Figure CN222351451U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a vacuum chamber lifting and lowering movement mechanism, in particular to a sealing sliding mechanism used for the vacuum chamber. Background Art
[0002] The working chamber of the PCB board vacuum plugging machine is a vacuum environment, and a lifting motion mechanism is involved inside it. Generally speaking, the moving end of the lifting motion mechanism is arranged in the vacuum environment, and its driving part is located outside the chamber. This requires a high degree of sealing of the lifting motion mechanism. The existing lifting motion mechanism generally uses a light bar and a sliding sleeve to achieve lifting coordination. In order to ensure the sealing blockage between the upper and lower spaces, a sealing ring needs to be installed on the outside of the light bar. For a vacuum environment, if a highly sealed sealing ring is added, the motion damping of the light bar will inevitably increase or decrease, resulting in an increase in the driving loss of the lifting motion mechanism, which cannot meet the process requirements. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a sealing sliding mechanism which can ensure the high sealing of the vacuum chamber and reduce the loss of driving force for lifting movement in view of the deficiencies of the prior art.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions.
[0005] A sealing sliding mechanism for a vacuum chamber, comprising a linear bearing mounting seat, at least one linear bearing and a guide shaft, wherein the linear bearing is fixed in the linear bearing mounting seat, the guide shaft passes through the linear bearing and the two are slidably matched, at least one V-shaped sealing ring is provided on the upper and lower sides of the linear bearing, the V-shaped sealing ring comprises an outer ring body and two inner ring parts extending toward the inner side of the outer ring body, a notch is formed between the two inner ring parts, the inner wall of the linear bearing mounting seat is provided with a fixing groove corresponding to the V-shaped sealing ring one by one, the outer ring body is clamped in the fixing groove, and the inner ring ends of the two inner ring parts are both fitted to the guide shaft.
[0006] Preferably, two linear bearings are arranged in the linear bearing mounting seat, and the two linear bearings are stacked up and down.
[0007] Preferably, the linear bearing mounting seat comprises a cylindrical seat body, annular end covers are fixed to the upper and lower ends of the seat body, and the V-shaped sealing ring is arranged on the inner side of the annular end cover.
[0008] Preferably, an abutting convex ring is formed on the end surface of the annular end cover close to the inner edge, the abutting convex ring extends into the seat body, and the abutting convex ring is aligned with the linear bearing.
[0009] Preferably, a circular sealing ring is sandwiched between the abutting convex ring and the seat body.
[0010] Preferably, a fixing convex ring is formed on the outer side of the seat body.
[0011] In the sealing sliding mechanism for a vacuum chamber disclosed by the utility model, one or more linear bearings are provided in the linear bearing mounting seat, and the guide shaft is passed through the linear bearing to make the two slide and cooperate. Since the linear bearing has a sufficient length, it can ensure that the guide shaft moves up and down straightly. On this basis, in order to achieve sealing, the utility model provides at least one V-shaped sealing ring in the linear bearing mounting seat on the upper and lower sides of the linear bearing. The V-shaped sealing ring has an outer ring body and two inner ring parts. The two inner ring parts protrude to the inner side of the outer ring body and are in a "V" shape. The notch between the two inner ring parts can make the inner ring parts have sufficient deformation elasticity. Since the inner ring ends of the two inner ring parts are both in contact with the guide shaft, when the guide shaft moves up and down, the inner ring part can both seal and fit the guide shaft and produce corresponding deformation with the guide shaft, which brings less damping to the guide shaft. At the same time, since the two inner ring parts are distributed in a "V" shape, the ability to withstand external air pressure is stronger, thereby ensuring reliable sealing. Compared with the prior art, the utility model can not only ensure the high sealing of the vacuum chamber, but also reduce the loss of driving force for lifting movement, and is suitable for application in the lifting movement mechanism of the vacuum chamber. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a side view of the sealing sliding mechanism used for the vacuum chamber of the utility model;
[0013] Figure 2 This is a cross-sectional view of the sealing sliding mechanism used in the vacuum chamber of the utility model;
[0014] Figure 3 for Figure 2 A magnified view of part A;
[0015] Figure 4 for Figure 2 Magnified view of part B. DETAILED DESCRIPTION
[0016] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.
[0017] The utility model discloses a sealing sliding mechanism for a vacuum chamber, combined with Figures 1 to 4As shown, it includes a linear bearing mounting seat 1, at least one linear bearing 2 and a guide shaft 3, the linear bearing 2 is fixed in the linear bearing mounting seat 1, the guide shaft 3 passes through the linear bearing 2 and the two are slidably matched, at least one V-shaped sealing ring 4 is provided on the upper and lower sides of the linear bearing 2, the V-shaped sealing ring 4 includes an outer ring body 40 and two inner ring parts 41 extending to the inner side of the outer ring body 40, a notch 42 is formed between the two inner ring parts 41, the inner wall of the linear bearing mounting seat 1 is provided with a fixing groove 10 corresponding to the V-shaped sealing ring 4, the outer ring body 40 is clamped in the fixing groove 10, and the inner ring ends of the two inner ring parts 41 are both fitted to the guide shaft 3.
[0018] In the above structure, one or more linear bearings 2 are arranged in the linear bearing mounting seat 1, and the guide shaft 3 is passed through the linear bearing 2 so that the two can slide together. Since the linear bearing 2 has a sufficient length, it can ensure that the guide shaft 3 moves up and down straightly. On this basis, in order to achieve sealing, the utility model provides at least one V-shaped sealing ring 4 in the linear bearing mounting seat 1 on the upper and lower sides of the linear bearing 2. The V-shaped sealing ring 4 has an outer ring body 40 and two inner ring parts 41. The two inner ring parts 41 face the inner ring body 40 and the inner ring body 41. The inner side of the outer ring body 40 is convex and presents a "V" shape. The notch 42 between the two inner ring parts 41 can make the inner ring part 41 have sufficient deformation elasticity. Since the inner ring ends of the two inner ring parts 41 are both attached to the guide shaft 3, when the guide shaft 3 moves up and down, the inner ring part 41 can not only seal and fit the guide shaft 3, but also produce corresponding deformation with the guide shaft 3, which brings less damping to the guide shaft 3. At the same time, since the two inner ring parts 41 are distributed in a "V" shape, the ability to withstand external air pressure is stronger, thereby ensuring reliable sealing. Compared with the prior art, the utility model can not only ensure the high sealing of the vacuum chamber, but also reduce the loss of the driving force of the lifting movement, and is suitable for application in the vacuum chamber lifting movement mechanism.
[0019] In order to further reduce the lifting and lowering motion damping of the guide shaft 3, in this embodiment, two linear bearings 2 are provided in the linear bearing mounting seat 1, and the two linear bearings 2 are stacked up and down. However, this is only a preferred embodiment of the utility model and is not used to limit the protection scope of the utility model. In actual applications, according to design requirements, one or three linear bearings 2 can also be provided in the linear bearing mounting seat 1.
[0020] As a preferred method, see Figure 2 and Figure 4 The linear bearing mounting seat 1 includes a cylindrical seat body 11 , annular end covers 12 are fixed to the upper and lower ends of the seat body 11 , and the V-shaped sealing ring 4 is arranged on the inner side of the annular end cover 12 .
[0021] In the above structure, the annular end cover 12 and the seat body 11 can be fixedly connected by screws, and the fixing groove 10 is opened on the inner wall of the annular end cover 12. Since the annular end cover 12 is smaller in size, it is convenient to perform grooving processing on it.
[0022] On this basis, the end surface of the annular end cover 12 close to the inner edge is formed with an abutting convex ring 120, the abutting convex ring 120 extends into the seat body 11, and the abutting convex ring 120 is aligned with the linear bearing 2. The abutting convex ring 120 has a limiting and fixing effect on the linear bearing 2, so that the linear bearing 2 is reliably fixed in the seat body 11.
[0023] In order to seal the connection between the annular end cover 12 and the seat body 11, see Figure 4 In this embodiment, a circular sealing ring 121 is sandwiched between the abutting protruding ring 120 and the seat body 11 .
[0024] As a preferred embodiment, a fixing convex ring 110 is formed on the outer side of the seat body 11. The fixing convex ring 110 is used to install and fix the sealing sliding mechanism on a mechanism such as a table.
[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.
Claims
1. A sealing sliding mechanism for a vacuum chamber, characterized in that: The invention comprises a linear bearing mounting seat (1), at least one linear bearing (2) and a guide shaft (3), wherein the linear bearing (2) is fixed in the linear bearing mounting seat (1), the guide shaft (3) passes through the linear bearing (2) and the two are slidably matched, at least one V-shaped sealing ring (4) is provided on the upper and lower sides of the linear bearing (2), the V-shaped sealing ring (4) comprises an outer ring body (40) and two inner ring parts (41) extending to the inner side of the outer ring body (40), a notch part (42) is formed between the two inner ring parts (41), the inner wall of the linear bearing mounting seat (1) is provided with a fixing groove (10) corresponding to the V-shaped sealing ring (4), the outer ring body (40) is fixed in the fixing groove (10), and the inner ring ends of the two inner ring parts (41) are both fitted to the guide shaft (3).
2. The sealing sliding mechanism for a vacuum chamber according to claim 1, characterized in that: Two linear bearings (2) are arranged in the linear bearing mounting seat (1), and the two linear bearings (2) are stacked up and down.
3. The sealing sliding mechanism for a vacuum chamber according to claim 1, characterized in that: The linear bearing mounting seat (1) comprises a cylindrical seat body (11), annular end covers (12) are fixed to the upper and lower ends of the seat body (11), and the V-shaped sealing ring (4) is arranged on the inner side of the annular end cover (12).
4. The sealing sliding mechanism for a vacuum chamber according to claim 3, characterized in that: An abutting convex ring (120) is formed on the end surface of the annular end cover (12) close to the inner edge. The abutting convex ring (120) extends into the seat body (11), and the abutting convex ring (120) is aligned with the linear bearing (2).
5. The sealing sliding mechanism for a vacuum chamber according to claim 4, characterized in that: A circular sealing ring (121) is sandwiched between the abutting convex ring (120) and the seat body (11).
6. The sealing sliding mechanism for a vacuum chamber according to claim 3, characterized in that: A fixing convex ring (110) is formed on the outer side of the seat body (11).