High-pressure gas-rib soft-bottom plugging structure

Abstract

This utility model relates to a high-pressure air-ribbed soft-bottom sealing structure. The air rib is a composite braided tube formed by steam heat sealing of an inner membrane and an outer braided tube. The sealing structure includes an inner bottom tube, an inner bottom circle, and an outer bottom circle. The two inner bottom tubes are respectively located on the inner sides of both ends of the composite braided tube and welded to the composite braided tube circumferentially. The two inner bottom circles are respectively located on the outer ends of the two inner bottom tubes and welded to the ends of the inner bottom tubes circumferentially. The two outer bottom circles are respectively located at both ends of the composite braided tube and sewn together to the ends of the composite braided tube circumferentially. This utility model, by setting an annular sealing surface and a soft sealing structure, allows the air rib to maintain its original cylindrical shape and ensures that the sealing surface is evenly stressed, making it less prone to air leakage.

Description

Technical Field

[0001] This utility model relates to a high-pressure air-ribbed soft-bottom sealing structure, belonging to the field of high-pressure airtight product sealing technology. Background Technology

[0002] Most existing high-pressure airtight ribs use metal clamps for sealing, which is costly. For example, patent CN202320993104.1 discloses a high-pressure airtight rib fixing fixture. This fixture uses two opposing clamps to form a cavity in the middle to accommodate the airtight rib column. The airtight rib column is clamped between the end faces of the two clamps to seal it. Since the airtight rib is generally cylindrical, the existing clamp structure can only pinch the airtight rib into a plane before sealing it, which changes the original shape of the airtight rib. As a result, the airtight rib tube is stretched more in the middle of the sealing plane than at the two ends. Therefore, the strength in the middle is lower than that at the two ends, and it can withstand greater pressure, making it easy to detach from the clamp and leak air. Utility Model Content

[0003] In order to solve the problems existing in the prior art, this utility model provides a sealing structure with a ring-shaped sealing surface that can maintain the original shape of the air rib.

[0004] To achieve the above objectives, the technical solution proposed by this utility model is as follows: a high-pressure air-ribbed soft-bottom sealing structure, wherein the air rib is a composite braided tube formed by steam heat sealing of an inner membrane and an outer braided tube, and the sealing structure includes an inner bottom tube, an inner bottom circle, and an outer bottom circle. The two inner bottom tubes are respectively disposed on the inner sides of both ends of the composite braided tube and welded to the composite braided tube circumferentially. The two inner bottom circles are respectively disposed on the outer ends of the two inner bottom tubes and welded to the ends of the inner bottom tubes circumferentially. The two outer bottom circles are respectively disposed on both ends of the composite braided tube and stitched to the ends of the composite braided tube circumferentially.

[0005] The outer wall of the inner bottom tube is fitted with the inner wall of the composite braided tube, and the outer wall of the inner bottom tube and the inner wall of the composite braided tube are provided with at least one welded part arranged circumferentially along the axial direction.

[0006] The inner bottom circle includes an inner circular piece that matches the diameter of the inner bottom tube and an inner annular side that bends outward along the circumference of the inner circular piece. The inner wall of the end of the inner bottom tube is attached to and welded to the outer wall of the inner annular side.

[0007] The end of the inner bottom tube extends beyond the outer end of the inner annular side and bends inward, so that the inner wall of the end of the inner bottom tube is attached to and welded to the outer and inner walls of the inner annular side.

[0008] The outer bottom circle includes an outer circular piece that matches the diameter of the composite braided tube and an outer annular side that bends outward along the circumference of the outer circular piece. The inner wall of the end of the composite braided tube is attached to and sewn together with the outer wall of the outer annular side.

[0009] The end of the composite braided tube extends beyond the outer end of the outer annular side and bends inward, so that the inner wall of the end of the composite braided tube is attached to and sewn together with the outer and inner walls of the outer annular side.

[0010] The outer braided tube and the outer bottom circle are both made of high molecular weight polyethylene, and the inner membrane, the inner bottom tube, and the inner bottom circle are all made of TPU film.

[0011] When setting up the sealing structure, first place the inner bottom tube inside the composite braided tube, and use a 12KW high-frequency welding machine to weld the inner bottom tube and the composite braided tube. Then, use a 5KW high-frequency welding machine to weld the inner bottom circle and the inner bottom tube. Finally, use a high-platform machine to sew the composite braided tube and the outer bottom circle together.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This utility model's high-pressure air rib soft-bottom sealing structure features inner bottom tubes at both ends of the air rib, which are welded circumferentially to the air rib. An inner bottom circle is then provided at the outer end of the inner bottom tube, and the inner bottom tube is welded circumferentially to the inner bottom circle. The inner bottom circle allows the air rib to maintain its original cylindrical shape, and both sealing surfaces are annular, ensuring uniform pressure across all positions and preventing localized air leakage due to uneven pressure. Furthermore, since the inner bottom tube and both bottom circles are made of soft material, the sealing structure is a soft-bottom sealing structure, further ensuring uniform stress distribution and resulting in a product with high pressure resistance, long pressure holding time, and sufficient rigidity after sealing.

[0014] This invention features an outer bottom circle at the end of the composite braided tube of the air rib, which can protect the inner bottom tube and the inner bottom circle inside. Attached Figure Description

[0015] Figure 1 This is a three-dimensional sectional view of the high-pressure air-ribbed soft-bottom sealing structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the high-pressure air-ribbed soft-bottom sealing structure of this utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of the high-pressure air-ribbed soft-bottom sealing structure of this utility model;

[0018] Figure 4 for Figure 3 The main view;

[0019] Figure 5 for Figure 3 Top view;

[0020] Figure 6 This is a flowchart illustrating the manufacturing process of the high-pressure air rib soft bottom sealing structure of this utility model.

[0021] In the diagram: 1-Composite braided tube, 2-Inner bottom tube, 3-Inner bottom circle, 4-Outer bottom circle, 5-Welding part one, 6-Welding part two, 7-Sewing part. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Example 1

[0023] like Figure 1 and Figure 2 As shown, the high-pressure air rib soft bottom sealing structure of this embodiment includes an air rib that is a composite braided tube 1 formed by steam heat sealing of an inner membrane and an outer braided tube. The sealing structure for sealing the air rib includes an inner bottom tube 2, an inner bottom circle 3, and an outer bottom circle 4. In this embodiment, the outer braided tube and the outer bottom circle 4 are both made of high molecular weight polyethylene, and the inner membrane, the inner bottom tube 2, and the inner bottom circle 3 are all made of TPU film.

[0024] Combination Figure 3 and Figure 4 As shown, two inner bottom tubes 2 are respectively disposed on the inner sides of both ends of the composite braided tube 1, and their dimensions match the dimensions of the composite braided tube 1. Both are cylindrical, so that the outer side wall of the inner bottom tube 2 fits against the inner side wall of the composite braided tube 1. At the same time, a circumferentially arranged welding part 5 is provided on the outer side wall of the inner bottom tube 2 and the inner side wall of the composite braided tube 1, thus forming an annular sealing surface. In this embodiment, two or more annular sealing surfaces can also be provided axially along the outer side wall of the inner bottom tube 2 and the inner side wall of the composite braided tube 1 to enhance the sealing effect.

[0025] Two inner bottom circles 3 are respectively set at the outer ends of the two inner bottom tubes 2, that is, the ends of the outer bottom tube 2 and the composite braided tube 1 opposite to each other. The inner bottom circle 3 includes an inner circular piece that matches the diameter of the inner bottom tube 2 and an inner annular side that bends outward along the circumference of the inner circular piece. The inner wall of the end of the inner bottom tube 2 is attached to and welded to the outer wall of the inner annular side to form another annular sealing surface.

[0026] In this embodiment, the end of the inner bottom tube 2 is further bent inward beyond the outer end of the inner annular side, so that part of the inner wall of the end of the inner bottom tube is in contact with the outer wall of the inner annular side, and the inner wall of the bent part is in contact with the inner wall of the inner annular side. Both contact points are welded to enhance the sealing effect.

[0027] Combination Figure 5As shown, two outer bottom circles 4 are respectively disposed at both ends of the composite braided tube 1 and located outside the inner bottom circle 3, for protecting the inner bottom circle 3 and the inner bottom tube 2 of the membrane structure. The outer bottom circle 4 includes an outer circular piece matching the diameter of the composite braided tube 1 and an outer annular side bends outward along the circumference of the outer circular piece. The inner wall of the end of the composite braided tube 1 is attached to and sewn together with the outer wall of the outer annular side. In this embodiment, the end of the composite braided tube 1 can also be bent inward beyond the outer end of the outer annular side, so that the inner wall of the end of the composite braided tube is attached to the outer wall of the outer annular side, and the inner wall of the bent part is attached to the inner wall of the outer annular side, thus sewing together the three-layer structure.

[0028] In this embodiment, the annular sealing surface and soft sealing structure allow the air ribs to maintain their original columnar shape and ensure that the sealing surface is subjected to uniform force, making it less prone to air leakage. Example 2

[0029] like Figure 6 As shown, this embodiment illustrates the processing method of the air-ribbed soft-bottom sealing structure described in the previous embodiment. The process steps are as follows: 1. Cut and position the required materials, and conduct inspections. If the materials pass inspection, proceed to the next step in the manufacturing workshop; otherwise, rework is required. 2. Punch holes in the composite braided tube to pre-drill holes for the air nozzle installation. 3. Install the air nozzle base. 4. Install the air nozzle valve. 5. Use a 12KW high-frequency welding machine to perform circumferential welding on the inner bottom tube and the composite braided tube, ensuring no air leakage at the weld. 6. Use a 5KW high-frequency welding machine to perform circumferential welding on the inner bottom circle and the inner bottom tube, ensuring no air leakage around the weld. 7. Conduct an airtightness test. If the test passes, proceed to the next step; otherwise, rework is required. 8. Use a high-strength sewing machine to connect the composite braided tube and the outer bottom circle. This process produces a lightweight, quick-to-use, and structurally simple high-pressure air rib with high pressure resistance and long-lasting pressure retention.

[0030] The above process involves the following equipment, as shown in Table 1.

[0031] Table 1 List of Main Equipment

[0032] Serial Number Equipment Name use 1 Rhino System design 2 CAD system typesetting 3 Hot cutting knife Cutting, trimming, punching 4 12KW High-Frequency Welding Machine Tube and sleeve welding 5 5KW High-Frequency Welding Machine Tube membrane sealing bottom 6 High platform sewing machine Pipe bottom sealing 7 barometer test 8 air compressor Inflation test

[0033] The 12KW high-frequency welding machine and the 5KW high-frequency welding machine are important equipment in this process. The equipment parameters involved are shown in Table 2 and Table 3.

[0034] Table 2 12KW High Frequency Process Parameters

[0035] Knife Model Number Mold closing time Grounding delay High frequency current Welding time Cooldown time Ascent Time 30mm horizontal die 3s 1.5s 2A 10S 10s 2S .

[0036] Table 3. 5KW High-Frequency Process Parameters

[0037] Knife Model Number Mold closing time Grounding delay High frequency current Welding time 150mm round die 3s 1.5s 2A 6S 10mm horizontal die 3s 1.5s 2A 6S

[0038] The air ribs obtained in this embodiment meet the lightweight requirements of most products, have high pressure resistance, long pressure holding time, and strong load-bearing capacity.

[0039] The technical solutions of this utility model are not limited to the above embodiments. All technical solutions obtained by equivalent substitution fall within the scope of protection claimed by this utility model.

Claims

1. A high pressure gas rib soft bottom plugging structure, the gas rib is a composite braided tube formed by steam heat sealing of an inner membrane and an outer braided tube, characterized in that: The sealing structure includes an inner bottom tube, an inner bottom circle, and an outer bottom circle. The two inner bottom tubes are respectively disposed on the inner sides of both ends of the composite braided tube and welded to the composite braided tube circumferentially. The two inner bottom circles are respectively disposed on the outer ends of the two inner bottom tubes and welded to the ends of the inner bottom tubes circumferentially. The two outer bottom circles are respectively disposed on both ends of the composite braided tube and stitched to the ends of the composite braided tube circumferentially.

2. The high-pressure air-ribbed soft-bottom sealing structure according to claim 1, characterized in that: The outer wall of the inner bottom tube is fitted with the inner wall of the composite braided tube, and the outer wall of the inner bottom tube and the inner wall of the composite braided tube are provided with at least one welded part arranged circumferentially along the axial direction.

3. The high-pressure air-ribbed soft-bottom sealing structure according to claim 2, characterized in that: The inner bottom circle includes an inner circular piece that matches the diameter of the inner bottom tube and an inner annular side that bends outward along the circumference of the inner circular piece. The inner wall of the end of the inner bottom tube is attached to and welded to the outer wall of the inner annular side.

4. The high-pressure air-ribbed soft-bottom sealing structure according to claim 3, characterized in that: The end of the inner bottom tube extends beyond the outer end of the inner annular side and bends inward, so that the inner wall of the end of the inner bottom tube is attached to and welded to the outer and inner walls of the inner annular side.

5. The high-pressure air-ribbed soft-bottom sealing structure according to claim 4, characterized in that: The outer bottom circle includes an outer circular piece that matches the diameter of the composite braided tube and an outer annular side that bends outward along the circumference of the outer circular piece. The inner wall of the end of the composite braided tube is attached to and sewn together with the outer wall of the outer annular side.

6. The high-pressure air-ribbed soft-bottom sealing structure according to claim 5, characterized in that: The end of the composite braided tube extends beyond the outer end of the outer annular side and bends inward, so that the inner wall of the end of the composite braided tube is attached to and sewn together with the outer and inner walls of the outer annular side.

7. The high-pressure air-ribbed soft-bottom sealing structure according to any one of claims 1 to 6, characterized in that: The outer braided tube and the outer bottom circle are both made of high molecular weight polyethylene, and the inner membrane, the inner bottom tube, and the inner bottom circle are all made of TPU film.

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