Inflatable sleeve

Abstract

The present invention relates to an inflatable sleeve, comprising a left end cover, a right end cover, an inner ring and an outer ring, and is characterized in that: the outer ring is sleeved on the outside of the inner ring, the left end cover and the right end cover are respectively connected to the inner ring and the outer ring, the inner ring and the outer ring form an annular cavity, a plurality of airbag installation cavities distributed at intervals are arranged in the cavity, an airbag is installed in the airbag installation cavity, an inflation tube is arranged in communication with the airbag installation cavity, and an anti-leakage component is arranged in the airbag installation cavity. The beneficial effects of the present invention are: each airbag is inflated uniformly, but due to the existence of the anti-leakage component, the gas in the airbag is independent of each other, even if one airbag is damaged, it will not cause the entire inflatable sleeve to fail to work, but can continue to expand normally, thereby improving the service life of the inflatable sleeve, being more environmentally friendly and energy-saving, and the anti-leakage component has a simple structure and is easy to manufacture.

Description

Technical Field

[0001] The invention relates to a winding component, in particular to an air expansion sleeve. Background Art

[0002] In the prior art, the rewinding and unwinding rollers of the rewinding machine usually adopt an inflatable shaft mechanism to lock the core of the paper roll. However, the diameter of the inflatable shaft is fixed. When paper rolls with different core apertures are installed on the shaft, the inflatable shaft cannot fix the paper roll with a larger aperture due to the limitation of the diameter. In order to achieve this purpose, an inflatable sleeve mounted on the inflatable shaft has appeared on the market. The inflatable sleeve is fixed by inflating the inflatable sleeve, and the inflatable sleeve also needs to bulge outward after being inflated to fix the paper roll.

[0003] At present, various domestic and imported inflatable sleeves in use on the market all use long air bags to expand and push out after inflation to tighten various winding core tubes. Due to the long length of the air bags, the long air bags expand as a whole after inflation, which makes the long air bags easy to be damaged. If damaged, the reel paper will be unevenly wound, which wastes materials and affects production. It is not energy-saving and environmentally friendly. Summary of the invention

[0004] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art.

[0005] Inflatable sleeves are available.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an inflatable sleeve, comprising a left end cover, a right end cover, an inner ring, and an outer ring, characterized in that: the outer ring is sleeved on the outside of the inner ring, the left end cover and the right end cover are respectively connected to the inner ring and the outer ring, the inner ring and the outer ring form an annular cavity, a plurality of airbag installation cavities distributed at intervals are arranged in the cavity, an airbag is installed in the airbag installation cavity, an inflation tube is provided in the cavity of the outer ring, the inflation tube is connected to the airbag installation cavity, and an anti-leakage component is provided in the airbag installation cavity.

[0007] By adopting the above technical scheme, the present invention arranges a plurality of airbags distributed at intervals in the cavity, and inflates each airbag connected to the inflation tube through the air nozzles arranged at both ends of the inflation tube. Since an anti-leakage component is provided in each airbag mounting cavity, each airbag becomes an independent airbag after being inflated. Even if an airbag is accidentally damaged, since the gas in other airbags is independent of that airbag, the undamaged airbag can work normally, and the winding work can be carried out normally without stopping the machine to replace the entire inflation sleeve, thereby saving costs and improving production efficiency.

[0008] The above-mentioned inflatable sleeve can be further configured as follows: the anti-leakage component includes a seat body, an L-shaped airway is arranged in the seat body, one end of the L-shaped airway is connected to the inflation tube to form an inflation tube connecting end, and the other end is connected to the airbag to form an airbag connecting end, and the seat body is provided with a sealing structure at the airbag connecting end.

[0009] By adopting the above technical solution, the anti-leakage component is set as a seat body and an L-shaped airway arranged in the seat body, and a sealing structure is set at the airbag connecting end of the L-shaped airway. After the gas enters the airbag through the inflation tube connecting end of the L-shaped airway, it cannot flow out of the airbag from the L-shaped airway again due to the action of the sealing structure, thereby realizing the independent existence of the gas in each airbag, and realizing that the damage of one airbag will not affect the continued operation of the remaining airbags.

[0010] The above-mentioned inflatable sleeve can be further configured as: the anti-leakage component includes a seat body, the seat body is provided with a first air cavity and a second air cavity which are connected to each other, the first air cavity and the second air cavity are vertically connected to each other, and one end of the seat body close to the second air cavity is provided with a limit seat with an outer diameter smaller than the seat body, a V-shaped limit ring groove is provided between the seat body and the limit seat, the limit ring groove is provided with at least one air inlet hole which is connected to the second air cavity, and a sealing ring with an outer diameter smaller than the inner diameter of the seat body and a diameter larger than the diameter of the air inlet hole is installed in the limit ring groove.

[0011] Of course, the implementation method of the anti-leakage air component can also be set as the above-mentioned two first air cavities and second air cavities arranged vertically at 90°, the second air cavity is connected to the airbag, a limit seat with an outer diameter smaller than the seat body is provided at one end of the seat body close to the second air cavity, a V-shaped limit ring groove is provided between the seat body and the limit seat, and an air inlet hole connected to the second air cavity and a sealing ring with a diameter larger than the diameter of the air inlet hole installed at the limit ring groove are provided on the V-shaped limit ring groove, the gas in each airbag can be independent, and even if one airbag is damaged, it will not cause the overall inflatable sleeve to fail to work normally.

[0012] The above-mentioned inflatable sleeve can be further configured as follows: the sealing structure includes a limit platform which is integrally formed with the seat body and has a diameter smaller than the diameter of the seat body, a V-shaped limit ring groove is arranged between the limit platform and the seat body, an air inlet hole is opened on the limit ring groove, and a sealing ring with a diameter smaller than the inner diameter of the seat body is installed in the limit ring groove.

[0013] By adopting the above technical solution, when gas enters the airbag through the L-shaped airway, since the outer diameter of the sealing ring is smaller than the inner diameter of the seat body, the gas pushes the sealing ring open through the air intake hole and enters the airbag. Since the sealing ring returns to its original state after inflation stops, the sealing ring presses against the air intake hole and the seal is more firmly sealed under the pressure of the gas, so that the gas cannot flow out of the airbag from the L-shaped airway in the opposite direction, forming a sealed one-way valve.

[0014] The above-mentioned inflatable sleeve can be further configured as follows: the outer diameter of the inflatable sleeve is between 2 inches and 20 inches.

[0015] The above-mentioned inflatable sleeve can be further configured as follows: the width of the inflatable sleeve is between 20mm and 1000mm.

[0016] The beneficial effects of the present invention are as follows: the airbags are inflated at the same time, but due to the presence of the anti-leakage component, the gases in the airbags are independent of each other. Even if one airbag is damaged, it will not cause the entire inflatable sleeve to stop working, but can continue to expand normally, thereby increasing the service life of the inflatable sleeve, being more environmentally friendly and energy-saving, and the anti-leakage component has a simple structure and is easy to manufacture.

[0017] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0019] Figure 2 Based Figure 1 A magnified schematic diagram of part A. DETAILED DESCRIPTION

[0020] See also Figure 1 , Figure 2 As shown: the inflatable sleeve includes a left end cover 1, a right end cover 2, an inner ring 3, and an outer ring 4. The outer ring 4 is sleeved on the outside of the inner ring 3. The left end cover 1 and the right end cover 2 are connected to the inner ring 3 and the outer ring 4 respectively. The inner ring 3 and the outer ring 4 form an annular cavity. A plurality of airbag installation cavities 5 are arranged in the cavity. An airbag 6 is installed in the airbag installation cavity 5. An inflation tube 7 is arranged in the cavity of the outer ring 4. The inflation tube 7 is connected to the airbag installation cavity 5. An anti-leakage component is arranged in the airbag installation cavity 5. The anti-leakage component includes a seat body 8. The seat body 8 has an air bag 6 installed in it. An L-shaped airway 81 is provided, one end of which is connected to the inflation tube 7 to form an inflation tube connecting end 82, and the other end is connected to the airbag 6 to form an airbag connecting end 83. The seat body 8 is provided with a sealing structure at the airbag connecting end 83, and the sealing structure includes a limiting platform 84 which is integrally formed with the seat body 8 and has a diameter smaller than the diameter of the seat body 8, and a V-shaped limiting ring groove 85 is provided between the limiting platform 84 and the seat body 8, and an air inlet hole 86 is opened on the limiting ring groove 85, and a sealing ring 87 with a diameter smaller than the inner diameter of the seat body 8 is installed in the limiting ring groove 85.

Claims

1. An inflatable sleeve, comprising a left end cover, a right end cover, an inner ring and an outer ring, characterized in that: The outer ring is sleeved on the outside of the inner ring, the left end cover and the right end cover are connected to the inner ring and the outer ring respectively, the inner ring and the outer ring form an annular cavity, a plurality of airbag installation cavities spaced apart are arranged in the cavity along the axial direction, an airbag is installed in the airbag installation cavity, an inflation tube is arranged in the cavity of the outer ring, the inflation tube is connected to the airbag installation cavity, an anti-leakage component is arranged in the airbag installation cavity, the anti-leakage component includes a seat body, an L-shaped airway is arranged in the seat body, one end of the L-shaped airway is connected to the inflation tube An inflation tube connecting end is formed, and the other end is connected to the airbag to form an airbag connecting end. The seat body is provided with a sealing structure at the airbag connecting end. The sealing structure includes a limiting platform which is integrally formed with the seat body and has a diameter smaller than the seat body diameter. A V-shaped limiting ring groove is provided between the limiting platform and the seat body. An air inlet hole is provided on the limiting ring groove. A sealing ring with a diameter smaller than the inner diameter of the seat body is installed in the limiting ring groove. The outer diameter of the inflatable sleeve is between 2-20 inches, and the width of the inflatable sleeve is between 20mm-1000mm.

2. The inflatable sleeve includes a left end cover, a right end cover, an inner ring, and an outer ring, and is characterized in that: The outer ring is sleeved on the outside of the inner ring, the left end cover and the right end cover are connected to the inner ring and the outer ring respectively, the inner ring and the outer ring form an annular cavity, a plurality of airbag installation cavities are arranged in the cavity along the axial direction, an airbag is installed in the airbag installation cavity, an inflation tube is arranged in the cavity of the outer ring, the inflation tube is connected with the airbag installation cavity, an anti-leakage component is arranged in the airbag installation cavity, the anti-leakage component includes a seat body, a first air cavity and a second air cavity are arranged in communication in the seat body, the first air cavity and the second air cavity are arranged in vertical communication, a limiting seat with an outer diameter smaller than the seat body is arranged at one end of the seat body close to the second air cavity, a V-shaped limiting ring groove is arranged between the seat body and the limiting seat, the limiting ring groove is provided with at least one air inlet hole connected with the second air cavity, a sealing ring with an outer diameter smaller than the inner diameter of the seat body and a diameter larger than the diameter of the air inlet hole is installed in the limiting ring groove, the outer diameter of the inflation sleeve is between 2-20 inches, and the width of the inflation sleeve is between 20mm-1000mm.

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