High speed reciprocating motion dynamic sealing device and method

Abstract

The application relates to the field of sealing devices, in particular to a high-speed reciprocating dynamic sealing device and method, and the specific steps are as follows: a workpiece is added to a vacuum chamber and is subjected to a roller pressing sealing mechanism, an adjusting sealing mechanism and a sealing plate; the workpiece is internally sealed in the sealing plate by the adjusting sealing mechanism; the roller pressing sealing mechanism is extruded to rotate outside the sealing plate for external sealing by an adjusting roller; the sealing of the workpiece is driven reciprocally by the roller pressing sealing mechanism; the workpiece is taken out after being processed in the vacuum chamber, and the roller pressing sealing mechanism, the adjusting sealing mechanism and the adjusting roller are reset; the application has the beneficial effect that when different styles of workpieces are transported, space mismatch and negative pressure leakage may occur.

Description

Technical Field

[0001] This invention relates to the field of sealing devices, and more specifically to dynamic sealing devices and methods for high-speed reciprocating motion. Background Technology

[0002] Traditional sealing technologies, when used for reciprocating sealing of workpieces with rough surfaces, suffer from high wear, high energy consumption, short lifespan, and poor sealing performance. They are generally unsuitable for vacuum dynamic sealing devices used on reciprocating workpieces with rough surfaces, and are also unsuitable for high-speed reciprocating motion of circular, plate-shaped, elliptical, and other irregularly shaped workpieces with high-roughness outer surfaces. A similar high-speed reciprocating dynamic sealing device and method, as described in patent number CN201710149623.9, includes: at least two control channels, at least two dynamic sealing mechanisms, a control device, a workpiece drive device, a gap adjustment mechanism, a motor, and transmission gears. The control channels are connected to both sides of the vacuum chamber. The sealing mechanism is connected to both sides of the vacuum chamber via control channels. Each dynamic sealing mechanism includes a sealing plate and two grooved rubber rollers arranged vertically with their outer circumferential surfaces in close contact. The sealing plate is located behind the rubber rollers and has flanges at both ends on its front surface that fit tightly with the grooves. The sealing plate has a workpiece hole and a clearance channel on its front side, with tapered plates on its left and right sides. This device is suitable for high-speed reciprocating motion of irregularly shaped workpieces with high-roughness outer surfaces and offers strong sealing performance. However, when transporting workpieces of different shapes, the device may experience spatial mismatch and negative pressure leakage. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the situation of negative pressure leakage due to spatial mismatch when transporting workpieces of different styles in the prior art.

[0004] Therefore, the technical solution adopted is the high-speed reciprocating dynamic sealing device and method of the present invention, which includes a vacuum chamber, two control channels fixed and connected at both ends of the vacuum chamber, a sealing plate fixed on the control channel, a compression sealing roller sealing mechanism attached to the outer wall of the sealing plate, and an adjusting sealing mechanism provided at both the upper and lower ends of the sealing plate.

[0005] Preferably, the vacuum chamber has bases extending from both ends, and the lower end of the roller sealing mechanism is limited to slide within the base by a limiting slider. A roller regulator is threadedly connected to the base, and the roller regulator squeezes and drives the roller sealing mechanism to slide laterally within the base.

[0006] Preferably, the sealing plate includes a flange sealing plate body, with labyrinth sealing grooves provided at both the upper and lower ends of the flange sealing plate body, a transverse through-hole provided at the middle end of the flange sealing plate body, an arc-shaped extrusion rubber seat symmetrically fixed to the inner end face of the flange sealing plate body, and multiple side rotating shafts fixed to the side ends of the flange sealing plate body.

[0007] Preferably, the adjusting sealing mechanism includes a lifting drive motor, which is fixed to the side of the vacuum chamber. The lifting drive motor drives the positive and negative screw shafts to rotate in multiple side rotating shaft platforms through gear meshing. The upper and lower ends of the positive and negative screw shafts are respectively connected to two connecting support platforms through threaded engagement. A sealing end cover is fixed in the connecting support platform. A labyrinth sealing ring is fixed on the sealing end cover. The labyrinth sealing ring is inserted into the labyrinth sealing groove. Multiple internal extruders are evenly fixed on the sealing end cover.

[0008] Preferably, the inner extruder includes an outer cylinder, which is fixed to a sealing end cap. An inner limiting slide rod is slidably positioned on the inner wall of the outer cylinder. An inner extrusion spring is provided between the inner limiting slide rod and the inner wall of the outer cylinder. A clamping frame is fixed to the lower end of the inner limiting slide rod, and a sealing rubber roller is rotatably positioned inside the clamping frame.

[0009] Preferably, the sealing rubber rollers are bonded to each other.

[0010] Preferably, a rubber seal is provided between the labyrinth sealing ring and the labyrinth sealing groove.

[0011] Preferably, the roller sealing mechanism includes a sliding frame, the lower end of which slides within the base of the vacuum chamber via a limiting slider. An upper extrusion sealing roller and a lower extrusion sealing roller are longitudinally slidably arranged within the sliding frame, and a combined groove is provided between the upper extrusion sealing roller and the lower extrusion sealing roller. The upper extrusion sealing roller is driven by a motor, and both the upper extrusion sealing roller and the lower extrusion sealing roller rotate within a connecting buffer frame. The lateral limiting sliding of the connecting buffer frame is within the connecting support platform of the adjusting sealing mechanism. A top shaft is located at the bottom of the side valley of the sliding frame.

[0012] Preferably, the roller press adjuster includes an adjusting fixed cylinder, which is fixed on the base of the vacuum chamber. A top shaft and a pressing slide are inserted into the adjusting fixed cylinder. The pressing slide is fixed on an adjusting screw, which is connected to the base of the vacuum chamber by a threaded connection. A buffer pressing spring is provided between the pressing slide and the top shaft.

[0013] The dynamic sealing method for high-speed reciprocating motion is applicable to dynamic sealing devices with high-speed reciprocating motion. The specific steps are as follows: S1: The workpiece is added to the vacuum chamber and passes through the roller sealing mechanism, the adjusting sealing mechanism, and the sealing plate; S2: The sealing mechanism is adjusted to drive the internal sealing of the workpiece inside the sealing plate; S3: The roller pressure regulator adjusts the roller pressure sealing mechanism to squeeze and rotate the sealing plate for external sealing; S4: The sealing parts of the drive roller sealing mechanism are reciprocated and added to drive the mechanism. S5: After the workpiece is processed in the vacuum chamber, it is taken out and the roller sealing mechanism, the adjusting sealing mechanism and the roller regulator are reset.

[0014] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in this application.

[0015] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention in a first orientation. Figure 2 This is a schematic diagram of the overall second-direction structure of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the connection structure of the sealing plate of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the sealing plate of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the structure of the adjusting sealing mechanism of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the structure of the adjusting sealing mechanism of the present invention. Figure 2 ; Figure 8 This is a schematic diagram of the internal extruder of the present invention; Figure 9 This is a schematic diagram of the roller sealing mechanism of the present invention. Figure 1 ; Figure 10 This is a schematic diagram of the roller sealing mechanism of the present invention. Figure 2 ; Figure 11 This is a schematic diagram of the roller pressure regulator of the present invention.

[0017] In the diagram: 1. Vacuum chamber; 2. Control channel; 3. Roller sealing mechanism; 4. Adjusting sealing mechanism; 5. Roller adjuster; 6. Sealing plate; 7. Flange sealing plate body; 8. Labyrinth sealing groove; 9. Adding through hole; 10. Arc-shaped extrusion rubber seat; 11. Side rotating shaft platform; 12. Lifting drive motor; 13. Positive and negative screw shafts; 14. Connecting support platform; 15. Sealing end cap; 16. Labyrinth sealing ring; 17. Inner extruder; 18. Outer cylinder; 19. Inner limit slide bar; 20. Inner extrusion spring; 21. Clamping frame; 22. Sealing rubber roller; 23. Sliding frame; 24. Upper extrusion sealing roller; 25. Lowering extrusion sealing roller; 26. Combined groove; 27. Connecting buffer frame; 28. Top shaft; 29. ​​Adjusting fixed cylinder; 30. Adjusting screw; 31. Extrusion slide plate; 32. Buffer extrusion spring. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] In the description of this application, it should be understood that the terms "middle," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Specific implementation method one: like Figure 1 — Figure 11 As shown, a high-speed reciprocating dynamic sealing device and method includes a vacuum chamber 1, with two control channels 2 fixed and connected at both ends of the vacuum chamber 1, a sealing plate 6 fixed on the control channel 2, a compression sealing roller sealing mechanism 3 fitting the outer wall of the sealing plate 6, and an adjusting sealing mechanism 4 provided at both the upper and lower ends of the sealing plate 6.

[0023] The working principle and beneficial effects of this embodiment are as follows: The workpiece is added to the vacuum chamber 1 and passes through the roller sealing mechanism 3, the adjusting sealing mechanism 4, and the sealing plate 6. The adjusting sealing mechanism 4 drives the internal sealing of the workpiece within the sealing plate 6. The roller pressure adjuster 5 adjusts the roller sealing mechanism 3 to squeeze and rotate, performing an external seal outside the sealing plate 6. The roller sealing mechanism 3 is driven to reciprocate in conjunction with the addition of the workpiece. After the workpiece is processed in the vacuum chamber 1, it is removed, and the roller sealing mechanism 3, the adjusting sealing mechanism 4, and the roller pressure adjuster 5 are reset. This solves the problem of negative pressure leakage due to space mismatch when transporting different types of workpieces. Through the internal seal combined with the labyrinth seal and the close-fitting roller compression seal, multiple sealing guarantees can be achieved to ensure effective sealing during high-speed reciprocating motion. Specific Implementation Method Two: like Figure 1 — Figure 11 As shown, a high-speed reciprocating dynamic sealing device and method are provided. The vacuum chamber 1 has bases extending from both ends. The lower end of the roller sealing mechanism 3 is limited and slids within the base by a limiting slider. A roller pressure adjuster 5 is threadedly connected to the base. The roller pressure adjuster 5 squeezes and drives the roller sealing mechanism 3 to slide laterally within the base.

[0025] The working principle and beneficial effects of this embodiment are as follows: the base extending on the vacuum chamber 1 facilitates the lateral sliding roller sealing mechanism 3 to perform bonding and compression sealing, and at the same time, it is convenient to adjust the compression force of the roller sealing mechanism 3 through the roller pressure adjuster 5. Specific implementation method three: like Figure 1 — Figure 11 As shown, a high-speed reciprocating dynamic sealing device and method are described. The sealing plate 6 includes a flange sealing plate body 7. Both the upper and lower ends of the flange sealing plate body 7 are provided with labyrinth sealing grooves 8. The middle end of the flange sealing plate body 7 is provided with a transverse through hole 9. The inner end face of the flange sealing plate body 7 is symmetrically fixed with an arc extrusion rubber seat 10. Multiple side rotating shafts 11 are fixed to the side end of the flange sealing plate body 7.

[0027] The working principle and beneficial effects of this embodiment are as follows: the flange of the flange sealing plate 7 is in contact with the combined groove 26 between the upper extrusion sealing roller 24 and the lower extrusion sealing roller 25. The upper extrusion sealing roller 24 and the lower extrusion sealing roller 25 are sealed and rotated by the arc extrusion rubber seat 10. The upper extrusion sealing roller 24 and the lower extrusion sealing roller 25 have smooth surfaces and are squeezed and rotated to seal between the flange of the flange sealing plate 7 and the arc extrusion rubber seat 10. The workpiece is inserted into the control channel 2 through the combined groove 26 and the through hole 9. Specific implementation method four: like Figure 1 — Figure 11 As shown, the high-speed reciprocating dynamic sealing device and method, wherein the adjusting sealing mechanism 4 includes a lifting drive motor 12, which is fixed to the side end of the vacuum chamber 1. The lifting drive motor 12 drives the positive and negative screw shafts 13 to rotate in multiple side rotating shaft platforms 11 through gear meshing. The upper and lower ends of the positive and negative screw shafts 13 are respectively connected to two connecting support platforms 14 through threaded engagement. A sealing end cover 15 is fixed in the connecting support platform 14. A labyrinth sealing ring 16 is fixed on the sealing end cover 15. The labyrinth sealing ring 16 is inserted into the labyrinth sealing groove 8. Multiple internal extruders 17 are evenly fixed on the sealing end cover 15.

[0029] The working principle and beneficial effects of this embodiment are as follows: The lifting drive motor 12 drives the positive and negative screw shafts 13 to rotate within multiple side rotating shaft platforms 11 through gear meshing, thereby achieving synchronous driving of the upper and lower connecting support platforms 14 in the same internal and external manner, preventing the occurrence of differences; the connecting support platforms 14 drive the labyrinth sealing ring 16 on the sealing end cover 15 to slide in the labyrinth sealing groove 8, and the rubber seal provided between the labyrinth sealing ring 16 and the labyrinth sealing groove 8 is used to seal the labyrinth shape without affecting the vertical displacement drive; multiple internal extruders 17 are evenly fixed on the sealing end cover 15 to facilitate internal sealing of workpieces of different shapes. Specific implementation method five: like Figure 1 — Figure 11As shown, a high-speed reciprocating dynamic sealing device and method are described. The inner extruder 17 includes an outer cylinder 18, which is fixed on the sealing end cap 15. An inner limiting slide rod 19 is slidably limited on the inner wall of the outer cylinder 18. An inner extrusion spring 20 is provided between the inner limiting slide rod 19 and the inner wall of the outer cylinder 18. A clamping frame 21 is fixed to the lower end of the inner limiting slide rod 19. A sealing rubber roller 22 is rotatably arranged inside the clamping frame 21. The sealing rubber rollers 22 are in contact with each other.

[0031] The working principle and beneficial effects of this embodiment are as follows: When there are no workpieces, the multiple sealing rubber rollers 22 at the upper and lower ends are in a squeezed and fitted state to seal and prevent pressure leakage; after the workpieces are added, the lifting drive motor 12 drives the sealing end cover 15 to move the outer cylinder 18 up and down, so that the inner limit slide rod 19 in the outer cylinder 18 drives the sealing rubber rollers 22 in the clamping frame 21 to squeeze the workpieces. Because multiple rollers are arranged side by side and have different shapes, they squeeze the inner compression spring 20. Through the squeeze of the multiple sealing rubber rollers 22 arranged side by side to fit the shape, the inner seal is achieved and pressure leakage is prevented. Specific implementation method six: like Figure 1 — Figure 11 As shown, a high-speed reciprocating dynamic sealing device and method are described. The roller sealing mechanism 3 includes a sliding frame 23. The lower end of the sliding frame 23 slides within the base of the vacuum chamber 1 via a limiting slider. An upper extrusion sealing roller 24 and a lower extrusion sealing roller 25 are longitudinally slidably arranged within the sliding frame 23. A combined groove 26 is provided between the upper extrusion sealing roller 24 and the lower extrusion sealing roller 25. The upper extrusion sealing roller 24 is driven by a motor. Both the upper extrusion sealing roller 24 and the lower extrusion sealing roller 25 rotate within a connecting buffer frame 27. The lateral limiting sliding of the connecting buffer frame 27 is within the connecting support platform 14 of the adjusting sealing mechanism 4. A top shaft 28 is located at the bottom of the side valley of the sliding frame 23.

[0033] The working principle and beneficial effects of this embodiment are as follows: The motor drives the upper extrusion sealing roller 24 to rotate, which drives the connecting buffer frame 27 to move up and down through the connecting support platform 14, thereby synchronously adjusting the positions of the upper extrusion sealing roller 24 and the lower extrusion sealing roller 25, and synchronously performing rotational sealing extrusion. The reciprocating motion direction of the added processing parts is coordinated with the drive to prevent damage. The lateral limit sliding of the connecting buffer frame 27 is within the connecting support platform 14 of the adjusting sealing mechanism 4, which facilitates the lateral sliding of the entire roller pressing sealing mechanism 3 during lateral pressure adjustment and prevents interference. At the same time, the flange of the flange sealing plate 7 is in contact with the combined groove 26 between the upper extrusion sealing roller 24 and the lower extrusion sealing roller 25. The upper extrusion sealing roller 24 and the lower extrusion sealing roller 25 are sealed and rotated through the arc extrusion rubber seat 10. The smooth surfaces of the upper extrusion sealing roller 24 and the lower extrusion sealing roller 25 are squeezed and rotated between the flange of the flange sealing plate 7 and the arc extrusion rubber seat 10 to seal. Specific implementation method seven: like Figure 1 — Figure 11 As shown, the high-speed reciprocating dynamic sealing device and method, the roller pressure regulator 5 includes an adjusting fixed cylinder 29, which is fixed on the base of the vacuum chamber 1. The adjusting fixed cylinder 29 is inserted into the top shaft 28 and the extrusion slide plate 31. The extrusion slide plate 31 is fixed on the adjusting screw 30, which is connected to the base of the vacuum chamber 1 by a threaded connection. A buffer extrusion spring 32 is provided between the extrusion slide plate 31 and the top shaft 28.

[0035] The working principle and beneficial effects of this embodiment are as follows: by rotating and adjusting the adjusting screw 30 on the base of the vacuum chamber 1, the extrusion slide 31 extrudes the buffer extrusion spring 32, thereby extruding the top shaft 28 into the adjusting and fixing cylinder 29, thereby realizing the extrusion adjustment force on the roller sealing mechanism 3, and thus realizing the adjustment of the transverse extrusion sealing force. Detailed implementation method eight: like Figure 1 — Figure 11 As shown, the dynamic sealing method for high-speed reciprocating motion is applicable to dynamic sealing devices with high-speed reciprocating motion. The specific steps are as follows: S1: The workpiece is added to the vacuum chamber 1 and passes through the roller sealing mechanism 3, the adjusting sealing mechanism 4 and the sealing plate 6; S2: The sealing mechanism 4 is adjusted to drive the internal sealing of the workpiece inside the sealing plate 6; S3: The roller pressure regulator 5 is adjusted to make the roller pressure sealing mechanism 3 squeeze and rotate to perform external sealing on the sealing plate 6; S4: The sealing and machining parts of the drive roller sealing mechanism 3 are reciprocated and added to drive the mechanism. S5: After the workpiece is processed in the vacuum chamber 1, it is taken out and the roller sealing mechanism 3, the sealing mechanism 4 and the roller regulator 5 are reset.

[0037] The above description is not intended to limit the present invention, nor is the present invention limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the present invention are also within the protection scope of the present invention.

Claims

1. A dynamic sealing device for high-speed reciprocating motion, characterized in that: It includes a vacuum chamber (1), two control channels (2) are fixed and connected at both ends of the vacuum chamber (1), a sealing plate (6) is fixed on the control channel (2), the outer wall of the sealing plate (6) is fitted with a compression sealing roller sealing mechanism (3), and an adjustment sealing mechanism (4) is provided at both the upper and lower ends of the sealing plate (6). The sealing plate (6) includes a flange sealing plate body (7), with labyrinth sealing grooves (8) provided at both the upper and lower ends of the flange sealing plate body (7), a transverse through hole (9) provided at the middle end of the flange sealing plate body (7), an arc extrusion rubber seat (10) symmetrically fixed on the inner end face of the flange sealing plate body (7), and multiple side rotating shafts (11) fixed on the side end of the flange sealing plate body (7). The adjusting sealing mechanism (4) includes a lifting drive motor (12), which is fixed on the side of the vacuum chamber (1). The lifting drive motor (12) drives the positive and negative screw shaft (13) to rotate in multiple side rotating shaft platforms (11) through gear meshing. The upper and lower ends of the positive and negative screw shaft (13) are respectively connected to two connecting support platforms (14) through threaded engagement. A sealing end cover (15) is fixed in the connecting support platform (14). A labyrinth sealing ring (16) is fixed on the sealing end cover (15). The labyrinth sealing ring (16) is inserted into the labyrinth sealing groove (8). Multiple internal extruders (17) are evenly fixed on the sealing end cover (15).

2. The high-speed reciprocating dynamic sealing device according to claim 1, characterized in that: The vacuum chamber (1) has bases extending from both ends. The lower end of the roller sealing mechanism (3) is limited and slides within the base by a limiting slider. A roller regulator (5) is threadedly connected to the base. The roller regulator (5) squeezes and drives the roller sealing mechanism (3) to slide laterally within the base.

3. The high-speed reciprocating dynamic sealing device according to claim 1, characterized in that: The inner extruder (17) includes an outer cylinder (18), which is fixed on a sealing end cap (15). The inner wall of the outer cylinder (18) is limited by an inner limit slide rod (19). An inner extrusion spring (20) is provided between the inner limit slide rod (19) and the inner wall of the outer cylinder (18). A clamping frame (21) is fixed at the lower end of the inner limit slide rod (19). A sealing rubber roller (22) is rotatably arranged inside the clamping frame (21).

4. The high-speed reciprocating dynamic sealing device according to claim 3, characterized in that: The sealing rubber rollers (22) are bonded together.

5. The high-speed reciprocating dynamic sealing device according to claim 4, characterized in that: A rubber seal is provided between the labyrinth sealing ring (16) and the labyrinth sealing groove (8).

6. The high-speed reciprocating dynamic sealing device according to claim 2, characterized in that: The roller sealing mechanism (3) includes a sliding frame (23). The lower end of the sliding frame (23) slides in the base of the vacuum chamber (1) through a limiting slider. An upper extrusion sealing roller (24) and a lower extrusion sealing roller (25) are longitudinally slidably arranged in the sliding frame (23). A combined groove (26) is provided between the upper extrusion sealing roller (24) and the lower extrusion sealing roller (25). The upper extrusion sealing roller (24) is driven by a motor. Both the upper extrusion sealing roller (24) and the lower extrusion sealing roller (25) rotate in the connecting buffer frame (27). The lateral limiting sliding of the connecting buffer frame (27) is in the connecting support platform (14) of the adjusting sealing mechanism (4). There is a top shaft (28) at the bottom of the side valley of the sliding frame (23).

7. The high-speed reciprocating dynamic sealing device according to claim 6, characterized in that: The roller press regulator (5) includes an adjusting fixed cylinder (29), which is fixed on the base of the vacuum chamber (1). The adjusting fixed cylinder (29) is inserted into the top shaft (28) and the extrusion slide plate (31). The extrusion slide plate (31) is fixed on the adjusting screw (30), which is connected to the base of the vacuum chamber (1) by a threaded connection. A buffer extrusion spring (32) is provided between the extrusion slide plate (31) and the top shaft (28).

8. A dynamic sealing method for high-speed reciprocating motion, applicable to any one of the high-speed reciprocating dynamic sealing devices according to claims 1-7, characterized in that: The specific steps are as follows: S1: The workpiece is added to the vacuum chamber (1) and passes through the roller sealing mechanism (3), the adjusting sealing mechanism (4) and the sealing plate (6); S2: By adjusting the sealing mechanism (4), the workpiece is internally sealed inside the sealing plate (6); S3: Adjust the roller pressure regulator (5) to make the roller pressure sealing mechanism (3) squeeze and rotate to perform external sealing outside the sealing plate (6); S4: The sealing and machining parts of the drive roller sealing mechanism (3) are reciprocated and added to drive the mechanism. S5: After the workpiece is processed in the vacuum chamber (1), it is taken out and the roller sealing mechanism (3), the adjusting sealing mechanism (4) and the roller regulator (5) are reset.

Images