Multi-ring inflatable jig

Abstract

The utility model belongs to the technical field of air expansion shafts, and discloses a multi-ring air expansion jig which comprises an air expansion shaft body and a plurality of expansion pieces, the inner walls of the expansion pieces are in an arc shape attached to the air expansion shaft body, the expansion pieces are arranged on the periphery of a key bar of the air expansion shaft body in an annular array mode, and a plurality of tightening grooves are formed in the outer side walls of the expansion pieces at equal intervals. And an elastic lacing ring is sleeved in the lacing groove. The air expansion shaft is sleeved with the expansion piece, so that the purpose of adapting to the inner diameter sizes of different paper tubes is achieved, replacement convenience is high, normal use is not affected by the disassembly and assembly efficiency, replacement is carried out at any time, cost is low, and good application prospects are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of pneumatic shafts, and more specifically, to a multi-ring pneumatic fixture. Background Art

[0002] The inflatable shaft is a winding and unwinding shaft whose surface can protrude after high-pressure inflation and whose surface part can quickly retract after deflation. It has various names, and is also called air pressure shaft, expansion shaft, inflated shaft, inflatable roller, inflatable shaft, pressure shaft, inflatable roller, etc. Although the inflatable shaft has many names, the working principle is basically the same. When it is necessary to lock the external parts (such as round paper tubes), as long as the air source is inflated against the air nozzle on the inflatable shaft, the external parts can be supported. When it is necessary to release and unload, the sliding air core on the air nozzle is pressed by hand to deflate, so that the surface part of the inflatable shaft will quickly retract, making it easier to remove the external parts.

[0003] With the increasing demand for handling and collecting and releasing materials in today's industrial society, the application occasions of pneumatic shafts are also expanding. The traditional pneumatic principles include plate type keyway type, slat type, and sliding shaft type. The pneumatic height is generally 5mm, but because it is a relatively fixed size, it has poor versatility when encountering different paper tube inner diameters. The current solution adopted in the market is to re-customize the pneumatic shaft to match or use a single-axis expansion device, which is costly and cumbersome to match and replace. Utility Model Content

[0004] In order to solve the above problems, the present application provides a multi-ring inflatable jig.

[0005] The multi-ring inflatable jig provided in this application adopts the following technical solution:

[0006] A multi-ring inflatable fixture comprises an inflatable shaft body and a plurality of expansion sheets, wherein the inner wall of the expansion sheet is an arc-shaped sheet that fits the inflatable shaft body, and a plurality of the expansion sheets are arranged in a ring array on the periphery of a key strip of the inflatable shaft body. The outer wall of the expansion sheet is provided with a plurality of tightening grooves at equal intervals, and an elastic tightening ring is sleeved in the tightening groove.

[0007] Furthermore, the inner side wall of the expansion sheet is also provided with a limiting groove.

[0008] Furthermore, the width of the limiting groove matches the key strip of the inflatable shaft body.

[0009] Through the above technical solution, the expansion piece can be embedded with the air shaft body to prevent it from rotating.

[0010] Furthermore, the expansion sheet is made of plastic.

[0011] Furthermore, the depth of the tightening groove is greater than the diameter of the elastic tightening ring.

[0012] Furthermore, the elastic tightening ring is a spring or an elastic rope.

[0013] In summary, the present application includes at least one of the following beneficial technical effects:

[0014] The present application achieves the purpose of adapting to different inner diameter sizes of paper tubes by sleeved expansion sheets on the outside of the inflatable shaft. The replacement is convenient, the disassembly and assembly efficiency does not affect normal use, and the device can be replaced at any time with low cost, thus having good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of this application;

[0016] Figure 2 This is a schematic diagram of the expanded state for this application;

[0017] Figure 3 This is a schematic diagram of the structural breakdown of this application;

[0018] Figure 4 It is a schematic diagram of the structure of the expansion sheet.

[0019] Description of the numbers in the figure:

[0020] 1. Inflatable shaft body; 2. Expansion sheet; 3. Tightening groove; 4. Elastic tightening ring; 5. Limiting groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0022] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] Embodiment 1:

[0025] The present application is further described in detail below in conjunction with the accompanying drawings.

[0026] The embodiment of the present application discloses a multi-ring inflatable fixture, including an inflatable shaft body 1 and a plurality of expansion sheets 2, wherein the inner wall of the expansion sheet 2 is an arc-shaped that fits the inflatable shaft body 1, and the plurality of expansion sheets 2 are arranged in a ring array on the periphery of the key strip of the inflatable shaft body 1, and the outer wall of the expansion sheet 2 is provided with a plurality of tightening grooves 3 at equal intervals, and an elastic tightening ring 4 is sleeved in the tightening groove 3.

[0027] See also Figure 4 The inner side wall of the expansion piece 2 is also provided with a limiting groove 5, the width of the limiting groove 5 matches the key strip of the inflatable shaft body 1, and when in use, the expansion piece 2 can be embedded with the inflatable shaft body 1 to prevent it from sliding.

[0028] See also Figure 1-3 The depth of the tightening groove 3 is greater than the diameter of the elastic tightening ring 4.

[0029] As a preferred embodiment of the present invention, the expansion sheet 2 is made of plastic, and the elastic tightening ring 4 is a spring or elastic rope. A multi-stage spring connection method or a high-strength elastic rope tightening belt method can be used for expansion and correction to ensure balanced force on the contact surface.

[0030] The implementation principle of a multi-ring inflatable fixture in the embodiment of the present application is: when in use, the expansion piece 2 is wrapped around and fitted on the outside of the inflatable shaft, and the elastic tightening ring 4 is tightened. As the inflatable shaft body 1 expands, the expansion piece 2 is driven to expand outward. Multiple stages of expansion pieces 2 can be added as needed to achieve the purpose of adapting to different sizes of paper tube inner cores.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-ring inflatable jig, comprising an inflatable shaft body (1) and a plurality of expansion sheets (2), characterized in that: The inner wall of the expansion sheet (2) is in an arc shape that fits the inflatable shaft body (1); a plurality of the expansion sheets (2) are arranged in a circular array on the periphery of the key strip of the inflatable shaft body (1); a plurality of tightening grooves (3) are arranged at equal intervals on the outer wall of the expansion sheet (2); and an elastic tightening ring (4) is sleeved in the tightening groove (3).

2. A multi-ring inflatable jig according to claim 1, characterized in that: The inner side wall of the expansion sheet (2) is also provided with a limiting groove (5).

3. A multi-ring inflatable jig according to claim 2, characterized in that: The width of the limiting groove (5) matches the key strip of the inflatable shaft body (1).

4. A multi-ring inflatable jig according to claim 1, characterized in that: The expansion sheet (2) is made of plastic.

5. The multi-ring inflatable jig according to claim 1, characterized in that: The depth of the tightening groove (3) is greater than the diameter of the elastic tightening ring (4).

6. A multi-ring inflatable jig according to claim 1, characterized in that: The elastic tightening ring (4) is a spring or an elastic rope.

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