Inflatable shaft rapid switching mechanism

Abstract

The utility model provides an air expansion shaft rapid switching mechanism which comprises a first air expansion shaft, a second air expansion shaft and a third air expansion shaft. A containing cavity is formed in the middle of the second air expansion shaft, the containing cavity penetrates through the end of the second air expansion shaft, the first air expansion shaft is inserted from the end of the second air expansion shaft and then is arranged in the containing cavity, and a second air expansion connector is connected to the second air expansion shaft; the first connecting assembly is connected with the first inflatable shaft; and the second connecting assembly is connected with the second air expansion shaft, and the first connecting assembly is detachably connected with the second connecting assembly. According to the air expansion shaft rapid switching mechanism, switching of the first air expansion shaft and the second air expansion shaft of different specifications can be achieved, only the second air expansion shaft needs to be disassembled or assembled during switching, the switching process is relatively simple, and rapid switching of the air expansion shafts of different specifications is facilitated.

Description

Technical Field

[0001] This application relates to the technical field of mechanical engineering, and particularly relates to a quick-switching mechanism for an air shaft. Background Art

[0002] An air shaft is a mechanical component commonly used in industrial automation equipment, mainly used to support and drive drums and reels. Air shafts are widely used in industries such as printing and packaging. For example, in the patent with the publication number CN 208037743U, an air shaft provided with spiral rubber air shaft strips is disclosed, which includes a scale board, a connection head, an air extractor, a lighting board, an air shaft body, an air inflator, an air outlet pipe, air strips, and air keys, etc. When the air inflator is started, the air inflator works to inflate the air shaft body, and the gas flows into the air keys and air strips through the air shaft body, and the air keys and air strips bulge, thereby fixing the rolled material.

[0003] The air shaft disclosed in the above patent is a single-specification air shaft, which is integrally installed on the machine for work. However, in order to be applicable to drums or reels of different diameters, it is necessary to realize the switching of air shafts of different specifications. When switching, it is necessary to disassemble the air shaft as a whole and then install an air shaft of other specifications. The switching of air shafts of different specifications is relatively cumbersome and not convenient for the switching operation of air shafts of different specifications. Summary of the Invention

[0004] Embodiments of this application provide a quick-switching mechanism for an air shaft to solve the problems existing in the related art. The technical solutions are as follows:

[0005] Embodiments of this application provide a quick-switching mechanism for an air shaft, including:

[0006] A first air shaft, which is connected with a first air joint;

[0007] A second air shaft, which has a receiving cavity in the middle, and the receiving cavity penetrates through the end of the second air shaft. The first air shaft is inserted into the second air shaft from the end and placed in the receiving cavity. A second air joint is connected to the second air shaft;

[0008] A first connection component, which is connected to the first air shaft;

[0009] A second connection component, which is connected to the second air shaft, and the first connection component and the second connection component are detachably connected.

[0010] In an embodiment, the first connection component includes a flange connection sleeve, and the flange connection sleeve is provided with a first limiting member. The second connection component includes a head cover, and the head cover is provided with a second limiting member. The first limiting member and the second limiting member cooperate with each other.

[0011] In one embodiment, the first limiting member is a limiting groove, the second limiting member is a limiting convex portion that cooperates with the limiting groove, one end of the limiting groove has an opening portion communicating with the limiting groove, and the limiting convex portion enters the limiting groove through the opening portion.

[0012] In one embodiment, a limiting rod is fixed on the limiting convex portion, a limiting plate is provided below the opening portion of the limiting groove, and after the limiting convex portion enters the limiting groove, it is limited by the limiting rod and the limiting plate.

[0013] In one embodiment, a first connection hole is provided in the limiting groove, a second connection hole is provided on the limiting convex portion, and the flange connection sleeve is detachably connected to the head gland through the first connection hole and the second connection hole.

[0014] In one embodiment, the number of the first connection components is two, and the two first connection components are respectively located on opposite side surfaces of the first air expandable shaft.

[0015] In one embodiment, the number of the second connection components is two, and the two second connection components are respectively located on opposite side surfaces of the second air expandable shaft.

[0016] In one embodiment, the flange connection sleeve is connected to the end of the first air expandable shaft, and the head gland is connected to the end of the second air expandable shaft.

[0017] In one embodiment, the second air expandable shaft includes a second air expandable shaft body, a first head and a second head, the first head is connected to one end of the first air expandable shaft body, and the second head is connected to the other end of the second air expandable shaft body.

[0018] In one embodiment, the first air expandable shaft is a three-inch air expandable shaft, and the second air expandable shaft is a six-inch air expandable shaft.

[0019] The advantages or beneficial effects in the above technical solutions at least include:

[0020] The air shaft quick switching mechanism of the embodiment of the present application includes a first air shaft, a second air shaft, a first connection component and a second connection component. The first connection component is connected to the first air shaft, and the second connection component is connected to the second air shaft. Since the first connection component and the second connection component are detachably connected, when the first connection component and the second connection component are connected, the first air shaft is inserted into the accommodation cavity in the middle of the second air shaft. After inflating the first air shaft through the first air inflation joint, the first air shaft expands and fits tightly with the second air shaft, making the second air shaft completely fastened. At this time, the second air shaft can be used for the tightening operation. When it is necessary to switch to the first air shaft, the first air shaft is deflated, and then the connected first connection component and the second connection component are disassembled to realize the disassembly of the first air shaft and the second air shaft. The air shaft quick switching mechanism of the embodiment of the present application can realize the switching between the first air shafts and the second air shafts of different specifications. When switching, only the second air shaft needs to be disassembled or installed, and the switching process is relatively simple, which is convenient for the quick switching of air shafts of different specifications.

[0021] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in accordance with the present application and should not be regarded as limiting the scope of the present application.

[0023] Figure 1 It is a schematic structural diagram of the air shaft quick switching mechanism;

[0024] Figure 2 It is another schematic structural diagram of the air shaft quick switching mechanism;

[0025] Figure 3 It is a combined schematic diagram of the first air shaft and the first connection component;

[0026] Figure 4 It is a combined schematic diagram of the second air shaft and the second connection component;

[0027] Description of the reference numerals:

[0028] 1. First air shaft; 2. First air inflation joint; 3. Second air shaft; 4. Accommodating cavity; 5. Second air inflation joint; 6. First connection assembly; 7. Second connection assembly; 61. Flange connection sleeve; 62. First limiting member; 71. Head cover; 72. Second limiting member; 63. Opening part; 73. Limiting rod; 64. Limiting plate; 74. Connection plate; 75. Second connection hole; 21. Second air shaft body; 22. First head; 23. Second head; 24. Second head cover. Detailed implementation mode

[0029] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0030] As Figures 1 to 4 As shown, the embodiment of the present application provides a quick switching mechanism for air shafts, including: a first air shaft 1, to which a first air inflation joint 2 is connected; a second air shaft 3, in the middle of which there is an accommodating cavity 4 that penetrates through the end of the second air shaft 3. The first air shaft 1 is inserted into the accommodating cavity 4 from the end of the second air shaft 3 and is placed inside the accommodating cavity 4. A second air inflation joint 5 is connected to the second air shaft 3; a first connection assembly 6, which is connected to the first air shaft 1; a second connection assembly 7, which is connected to the second air shaft 3, and the first connection assembly 6 and the second connection assembly 7 are detachably connected.

[0031] Since the first connection assembly 6 and the second connection assembly 7 are detachably connected, when the first connection assembly 6 and the second connection assembly 7 are connected, the first air shaft 1 is inserted into the accommodating cavity 4 in the middle of the second air shaft 3. After inflating the first air shaft 1 through the first air inflation joint 2, the first air shaft 1 expands and tightly fits with the second air shaft 3, making the second air shaft 3 completely fastened. At this time, the second air shaft 3 can be used for tightening operations. When it is necessary to switch to the first air shaft 1, the first air shaft 1 is deflated, and then the connected first connection assembly 6 and the second connection assembly 7 are disassembled to achieve the disassembly of the first air shaft 1 and the second air shaft 3. The quick switching mechanism for air shafts in the embodiment of the present application can realize the switching between the first air shaft 1 and the second air shaft 3 of different specifications. When switching, only the second air shaft 3 needs to be disassembled or installed. The switching process is relatively simple, facilitating the quick switching of air shafts of different specifications.

[0032] To achieve the detachable connection between the first connecting component 6 and the second connecting component 7, where the first connecting component 6 includes a flange connecting sleeve 61, and the flange connecting sleeve 61 is provided with a first limiting member 62, the second connecting component 7 includes a head cover 71, and the head cover 71 is provided with a second limiting member 72, and the first limiting member 62 cooperates with the second limiting member 72. When the first connecting component 6 is connected to the second connecting component 7, it is limited by the first limiting member 62 and the second limiting member 72. Preferably, the flange connecting sleeve 61 is located at the end of the first air shaft 1, and the head cover 71 is located at the end of the second air shaft 3. The flange connecting sleeve 61 can be connected to the end of the first air shaft 1 by bolts or the like, and the head cover 71 can also be connected to the end of the second air shaft 3 by bolts or the like.

[0033] In an embodiment, the first limiting member 62 is a limiting groove, the second limiting member 72 is a limiting convex portion that cooperates with the limiting groove, one end of the limiting groove has an opening 63 communicating with the limiting groove, and the limiting convex portion enters the limiting groove through the opening 63.

[0034] To further limit, a limiting rod 73 is fixed on the limiting convex portion, and a limiting plate 64 is provided below the opening 63 of the limiting groove. After the limiting convex portion enters the limiting groove, it is limited by the limiting rod 73 and the limiting plate 64.

[0035] After the flange connecting sleeve 61 and the head cover 71 are limit-connected, it is also necessary to fix the flange connecting sleeve 61 to the second air shaft 3. To achieve the fixation of the flange connecting sleeve 61 to the second air shaft 3, the flange connecting sleeve 61 is provided with a first connection hole, a connecting plate 74 is fixed on the second air shaft 3, the connecting plate 74 is provided with a second connection hole 75, and the flange connecting sleeve 61 is detachably connected to the connecting plate 74 through the first connection hole and the second connection hole 75. Preferably, the connection and fixation of the flange connecting sleeve 61 to the second air shaft 3 can be achieved by inserting a limit pin into the first connection hole and the second connection hole 75.

[0036] To make the fixation between the first air shaft 1 and the second air shaft 3 more firm, the number of the first connecting components 6 is two, and the two first connecting components 6 are respectively located on the opposite side surfaces of the first air shaft 1. The number of the second connecting components 7 is two, and the two second connecting components 7 are respectively located on the opposite side surfaces of the second air shaft 3.

[0037] In an embodiment, the second air shaft 3 includes a second air shaft main body 21, a first head 22 and a second head 23. The first head 22 is connected to one end of the first air shaft 1 main body, and the second head 23 is connected to the other end of the second air shaft main body 21. The second air shaft 3 further includes a second head cover 24, and the second head cover 24 is connected to the first head 22 and the head cover 71, and the second head cover 24 is located between the first head 22 and the head cover 71.

[0038] Between the first head 22, the second head 23 and the first air shaft 1, and between the pressure bar of the second head 23 and the first head 22 and the head gland 71, connection can be achieved through screws.

[0039] In the embodiment, the first air shaft 1 can be a three-inch air shaft, and the second air shaft 3 can be a six-inch air shaft. In other embodiments, the first air shaft 1 can be a six-inch air shaft, and the second air shaft 3 can be a nine-inch air shaft, etc.

[0040] It should be noted that both the first air shaft 1 and the second air shaft 3 of the present application can be air shafts used in the existing market, and their working principles are all prior art.

[0041] Since the first air shaft 1 is connected with a first air joint 2, it can be connected with an external inflation device through the first air joint 2 to realize inflation and deflation of the first air shaft 1. Since the second air shaft 3 is connected with a second air joint 5, it can be connected with an external inflation device through the second air joint 5 to realize inflation and deflation of the second air shaft 3. When the first air shaft 1 and the second air shaft 3 are inflated, the keys inside the shaft can be inflated and expanded, and when deflated, the keys inside the shaft can quickly retract.

[0042] The working principle of the air shaft quick switching mechanism in the embodiment of the present application is as follows:

[0043] First, make the first air shaft 1 in a state where the keys are retracted, then insert the first air shaft 1 from the end of the second air shaft 3 into the accommodation cavity 4 of the second air shaft 3, so that the flange connection sleeve 61 and the head gland 71 are sleeved together, and the upper surface of the head gland 71 is in contact with the flange connection sleeve 61. Then rotate the second air shaft 3 in the clockwise direction, so that the limit protrusion is screwed into the limit groove through the opening 63 of the limit groove. During the rotation, limit is carried out through the limit rod 73 and the limit plate 64. When the limit plate 64 abuts against the limit rod 73 and cannot be rotated anymore, it is in place at this time. After being in place, a limit pin is inserted into the first connection hole and the second connection hole 75 to achieve connection and fixation.

[0044] Then inflate the first air shaft 1, and the first air shaft 1 is in close contact with the second air shaft 3, so that the second air shaft 3 is completely fastened. At this time, the switching from the first air shaft 1 to the second air shaft 3 is completed.

[0045] When it is necessary to switch from the second air shaft 3 to the first air shaft 1, first make both the first air shaft 1 and the second air shaft 3 in a deflated state, then remove the limit pin, then rotate the second air shaft 3 counterclockwise, so that the limit protrusion is screwed out of the limit groove, and then the second air shaft 3 can be removed. The air shaft quick switching mechanism in the embodiment of the present application can realize the quick switching between the first air shaft 1 and the second air shaft 3, and the switching method is simple and convenient.

[0046] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0047] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0048] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily conceive of various changes or substitutions within the technical scope disclosed in the present application, and these should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A quick-switching mechanism for an air shaft, characterized in that Comprising: A first air expandable shaft, to which a first air expandable joint is connected; A second air expandable shaft, which has a receiving cavity in the middle, the receiving cavity penetrates through the end of the second air expandable shaft, the first air expandable shaft is inserted into the receiving cavity after being inserted from the end of the second air expandable shaft, and a second air expandable joint is connected to the second air expandable shaft; A first connection component, connected to the first air expandable shaft; A second connection component, connected to the second air expandable shaft, and the first connection component and the second connection component are detachably connected.

2. The air shaft quick-switching mechanism according to claim 1, characterized in that The first connection component includes a flange connection sleeve, and the flange connection sleeve has a first limiting member. The second connection component includes a head cover, and the head cover has a second limiting member. The first limiting member and the second limiting member cooperate with each other.

3. The air shaft quick-switching mechanism according to claim 2, characterized in that, The first limiting member is a limiting groove, and the second limiting member is a limiting convex portion that cooperates with the limiting groove. One end of the limiting groove has an opening portion communicating with the limiting groove, and the limiting convex portion enters the limiting groove through the opening portion.

4. The air shaft quick-switching mechanism according to claim 3, characterized in that A limiting rod is fixed on the limiting convex portion, and a limiting plate is provided below the opening portion of the limiting groove. After the limiting convex portion enters the limiting groove, it is limited by the limiting rod and the limiting plate.

5. The air shaft quick switching mechanism according to claim 3, characterized in that, A first connection hole is provided in the limiting groove, and a second connection hole is provided on the limiting convex portion. The flange connection sleeve is detachably connected to the head cover through the first connection hole and the second connection hole.

6. The air shaft quick-switching mechanism according to any one of claims 1 to 5, characterized in that The number of the first connection components is two, and the two first connection components are respectively located on the opposite side surfaces of the first air expandable shaft.

7. The air shaft quick switching mechanism according to any one of claims 1 to 5, characterized in that, The number of the second connection components is two, and the two second connection components are respectively located on the opposite side surfaces of the second air expandable shaft.

8. The air shaft quick switching mechanism according to claim 2, characterized in that The flange connection sleeve is connected to the end of the first air expandable shaft, and the head cover is connected to the end of the second air expandable shaft.

9. The air shaft quick switching mechanism according to any one of claims 1 to 5, characterized in that, The second air expandable shaft includes a second air expandable shaft body, a first head and a second head. The first head is connected to one end of the second air expandable shaft body, and the second head is connected to the other end of the second air expandable shaft body.

10. The air shaft quick switching mechanism according to any one of claims 1 to 5, characterized in that The first air expandable shaft is a three-inch air expandable shaft, and the second air expandable shaft is a six-inch air expandable shaft.

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