Sealing device of vacuum box sliding door

Abstract

The utility model relates to the technical field of vacuum boxes, in particular to a sealing device for a sliding door of a vacuum box, which comprises a rack, a sliding door, a driving mechanism, a guide mechanism and a buffer device, the rack is provided with the vacuum box, and the inner side surface of the vacuum box is connected with the sliding door in a sliding manner; the driving mechanism comprises an air cylinder, a fixing seat and an air cylinder rod, the air cylinder is installed on the lower portion of the rack, and the fixing seat is arranged on the sliding door and connected with the air cylinder rod; the guide mechanism comprises guide strips, an outer guide wheel and an inner guide wheel, the two sides of the vacuum box are each provided with one guide strip, and each guide strip is provided with a guide groove; the buffering device is fixed to the guide strip, the driving function and the sealing function are integrated in one mechanism, and the dynamic sealing effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum chamber technology, and in particular to a sealing device for a vacuum chamber sliding door. Background Technology

[0002] Currently, the sealing device of the sliding door of the vacuum chamber usually adopts a split design, that is, the sliding door drive mechanism and the sealing mechanism are independent of each other, resulting in complex structure, large space occupation and insufficient reliability.

[0003] Traditional sealing methods are prone to wear during frequent opening and closing of sliding doors, and their sealing performance deteriorates over time, requiring regular maintenance or replacement. However, replacing the seals requires disassembling the sliding door or disrupting the vacuum environment, affecting equipment operating efficiency. Furthermore, existing technologies often struggle to balance the relationship between sealing force and sliding door movement resistance. This means that insufficient sealing force leads to vacuum leakage, while excessive force makes opening and closing the sliding door difficult, increasing the load on the drive mechanism. Therefore, existing sealing structures cannot simultaneously meet the requirements of high vacuum and low friction, and their performance deteriorates significantly in high or low temperature environments. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and to propose a sealing device for a vacuum chamber sliding door. To solve the above problems, this utility model adopts the following technical solution:

[0005] Based on the above problems, this utility model designs a sealing device for a vacuum chamber sliding door, including a frame, a sliding door, a drive mechanism, a guide mechanism, and a buffer device. The frame houses the vacuum chamber, and the sliding door is slidably connected to the inner side of the vacuum chamber. The drive mechanism includes a cylinder, a fixed seat, and a cylinder rod. The cylinder is mounted on the lower part of the frame, and the fixed seat is on the sliding door, connected to the cylinder rod. The guide mechanism includes guide strips, an outer guide wheel, and an inner guide wheel. Each side of the vacuum chamber has a guide strip with a guide groove. The buffer device is fixed to the guide strips.

[0006] Preferably, the buffer device includes a buffer seat and a hydraulic buffer. The buffer seat is mounted on the guide bar, and the hydraulic buffer is fixed on the buffer seat. The hydraulic buffer buffers the impact of the sliding door.

[0007] Preferably, four outer guide wheels are fixed at the four corners of the sliding door surface, and four inner guide wheels are installed at the upper and lower ends of both sides of the sliding door, with the inner guide wheels moving along the inside of the guide groove.

[0008] Preferably, the upper end of the guide groove has an arc-shaped constriction.

[0009] Preferably, the sealing strip is embedded in the side panel of the vacuum chamber, forming a dynamic sealing space with the sliding door.

[0010] Preferably, when the sliding door moves up and down, the outer guide wheel rolls up and down close to the left and right guide strips.

[0011] Preferably, the inner guide wheel rolls within the groove of the guide bar. When it reaches the arc range, the constricting pressure inner guide wheel moves upward while simultaneously generating downward pressure.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] 1. First, the problem of structural complexity was solved by integrating the driving and sealing functions into one mechanism, which not only greatly simplified the overall structure and reduced manufacturing costs, but also reduced the probability of system failure.

[0014] 2. The rounded end design allows the sliding door to automatically generate downward pressure at the closing end, ensuring a tight seal and achieving a vacuum effect.

[0015] 3. The hydraulic buffer device effectively absorbs the impact of the sliding door, protects the sealing interface from mechanical damage, and the modular buffer device is easy to maintain and replace. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the sealing device structure of a vacuum box sliding door proposed in this utility model.

[0017] Figure 2 This is a partially enlarged view of the sealing device for a vacuum box sliding door proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the working operation of a sealing device for a vacuum box sliding door proposed in this utility model.

[0019] In the diagram: 1. Cylinder, 2. Frame, 3. Hydraulic buffer, 4. Buffer seat, 5. Guide bar, 6. Sliding door, 7. Vacuum box, 8. Fixed seat, 9. Cylinder rod, 10. Outer guide wheel, 11. Inner guide wheel, 12. Sealing strip, 13. Closure. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] This technical solution provides a sealing device for a vacuum chamber sliding door, including a frame 2, a sliding door 6, a drive mechanism, a guide mechanism, and a buffer device, wherein the drive mechanism and the guide mechanism are both mounted on the frame 2;

[0022] The drive mechanism includes a cylinder 1, a fixed seat 8, and a cylinder rod 9. The lower part of the frame 2 is equipped with a cylinder 1 for lifting and lowering. The sliding door 6 has a fixed seat 8, which is connected to the cylinder rod 9. When compressed air enters the cylinder 1, the cylinder rod 9 performs linear reciprocating motion. The cylinder rod 9 is rigidly connected to the sliding door 6 through the fixed seat 8, transmitting the thrust of the cylinder 1 to the sliding door 6. When the cylinder rod 9 extends, it pushes the sliding door 6 to rise along the track to open; when it retracts, it pulls the sliding door 6 to fall and close. The fixed seat 8, as a key force transmission component, ensures that the force of the cylinder 1 is consistent with the direction of movement of the sliding door 6, while also bearing the weight of the door and the inertial force during the movement.

[0023] The guiding mechanism includes guide bars 5, outer guide wheels 10, and inner guide wheels 11. There is a guide bar 5 on each side of the vacuum box 7. The guide bars 5 are provided with guide grooves. Four outer guide wheels 10 are fixed at the four corners of the surface of the sliding door 6. Four inner guide wheels 11 are installed at the upper and lower ends of each side of the sliding door 6. The inner guide wheels 11 move along the inside of the guide grooves. The guide grooves on the guide bars 5 provide a precise guiding path for the movement of the sliding door 6. The outer guide wheels 10 are used to support the door body and reduce frictional resistance. At the same time, the inner guide wheels 11 ensure that the sliding door 6 moves smoothly along the predetermined track.

[0024] The buffer device includes a buffer seat 4 and a hydraulic buffer 3. The buffer seat 4 is mounted on the guide bar 5, and the hydraulic buffer 3 is fixed on the buffer seat 4. The hydraulic buffer 3 buffers the impact at the end of the sliding door.

[0025] Furthermore, the guide strips 5 are fixed to both sides of the vacuum chamber 7, and their guide grooves have a large arc-shaped converging structure at the upper end. When the sliding door 6 is closed, the inner guide wheel 11 rolls along the guide groove and enters the large arc area when it approaches the closed position. At this time, the curved surface of the large arc forces the inner guide wheel 11 to generate a downward reaction force while rolling upward. This force is transmitted to the sliding door 6 through the inner guide wheel 11, causing it to press down on the sealing strip 12, thereby ensuring the sealing performance of the vacuum chamber. At the same time, the outer guide wheels 10 at the four corners of the sliding door 6 provide stable support, maintain the balance of the door, and make the entire sealing process smooth and reliable. This design not only ensures the smooth movement of the sliding door, but also automatically increases the sealing pressure when closed.

[0026] Furthermore, the sealing strip 12 is embedded in the side plate of the vacuum chamber 7, forming a dynamic sealing space with the sliding door 6.

[0027] In this embodiment, the working process is as follows:

[0028] When the vacuum chamber 7 needs to be closed, cylinder 1 pushes the fixed seat 8 upward via cylinder rod 9, causing the sliding door 6 to rise vertically along the guide mechanism. During the lifting and lowering process, the outer guide wheels 10 at the four corners roll close to the outer side of the guide strips 5 on both sides, ensuring that the sliding door does not deviate horizontally; at the same time, the four inner guide wheels 11 on both sides of the sliding door roll in the guide grooves of the guide strips 5, further constraining the movement trajectory of the sliding door. When the sliding door 6 approaches the closed position, the inner guide wheels 11 enter the area of ​​the arc-shaped constriction 13 at the upper end of the guide groove, and the downward component force generated by the arc surface forces the sliding door 6 to press against the sealing strip 12, forming a reliable sealing space. When the vacuum chamber 7 is opened, the hydraulic buffer 3 fixed on the guide strip 5 absorbs the impact energy through the buffer seat 4 to avoid collision. At the same time, cylinder 1 pulls the sliding door 6 upward smoothly in the opposite direction, and the sealing pressure is gradually released when the inner guide wheels 11 disengage along the arc section, ensuring that the sealing strip 12 does not wear and separate. Throughout the process, the guide mechanism maintains the vertical up-and-down movement of the sliding door 6, and the dynamic pressing of the sealing strip 12 with the sliding door 6 achieves the sealing of the vacuum environment.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealing device for a vacuum chamber door, characterized in that The device includes a frame (2), a sliding door (6), a drive mechanism, a guide mechanism, and a buffer device. The frame (2) has a vacuum box (7), and the sliding door (6) is slidably connected to the inner side of the vacuum box (7). The drive mechanism includes a cylinder (1), a fixed seat (8), and a cylinder rod (9). The cylinder (1) is installed at the lower part of the frame (2), and the fixed seat (8) is on the sliding door (6). The fixed seat (8) is connected to the cylinder rod (9). The guide mechanism includes a guide bar (5), an outer guide wheel (10), and an inner guide wheel (11). There is a guide bar (5) on each side of the vacuum box (7), and the guide bar (5) is provided with a guide groove. The buffer device is fixed on the guide bar (5).

2. A sealing device for a vacuum box sliding door according to claim 1, characterized in that The buffer device includes a buffer seat (4) and a hydraulic buffer (3). The buffer seat (4) is mounted on the guide bar (5), and the hydraulic buffer (3) is fixed on the buffer seat (4). The hydraulic buffer (3) buffers the impact of the sliding door (6).

3. A sealing device for a vacuum box sliding door according to claim 1, characterized in that Four outer guide wheels (10) are fixed at the four corners of the surface of the sliding door (6), and four inner guide wheels (11) are installed at the upper and lower ends of both sides of the sliding door (6). The inner guide wheels (11) move along the inside of the guide groove.

4. The sealing device for a vacuum chamber sliding door according to claim 1, characterized in that, The upper end of the guide groove has an arc-shaped constriction (13).

5. A sealing device for a vacuum box sliding door according to claim 1, characterized in that, The sealing strip (12) is embedded in the side plate of the vacuum chamber (7) and forms a dynamic sealing space with the sliding door (6).

6. A sealing device for a vacuum box sliding door according to claim 3, characterized in that When the sliding door (6) moves up and down, the outer guide wheel (10) rolls up and down close to the left and right guide bars (5).

7. A sealing device for a vacuum box door according to claim 4, characterized in that The inner guide wheel (11) rolls in the groove of the guide bar (5). When it reaches the arc range, the constriction (13) presses the inner guide wheel (11) upward while forming downward pressure.

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