CN219990811U - Outer diameter additional spring plastic shaft sleeve for air expansion shaft - Google Patents

Abstract

The utility model relates to the technical field of air expansion shaft accessories, in particular to an outer diameter additional spring plastic shaft sleeve for an air expansion shaft, which is annular and is formed by encircling a plurality of split blocks, wherein each split block is made of plastic, the cross section of each split block is fan-shaped, end faces between adjacent split blocks are attached, and annular springs are coaxially sleeved on the outer side of the shaft sleeve. According to the utility model, the annular split blocks are formed by surrounding the split blocks to replace the traditional integral air-expanding shaft sleeve, so that the shaft sleeves with different annular widths can be formed by freely matching the annular split blocks, the annular split shaft sleeve is suitable for more workpiece sizes, the deformation capability and the deformation recovery capability of the whole shaft sleeve are ensured through the plastic material of the split blocks, and the damage to the shaft sleeve body caused by stress when the sleeve is sleeved on the outer side of a workpiece for a long time is avoided.

Description

Outer diameter additional spring plastic shaft sleeve for air expansion shaft

Technical Field

The utility model relates to the technical field of inflatable shaft accessories, in particular to an outer diameter additional spring plastic shaft sleeve for an inflatable shaft.

Background

The winding and unwinding inflatable shaft commonly used in a coating machine or a slitting machine is a shaft with a protruded surface after high-pressure inflation, and a shaft with a rapidly retracted surface part after deflation is called an inflatable shaft.

However, in the use process, the inflatable shaft needs to be replaced according to film material winding cores with different sizes, most inflatable shafts are heavy in whole at present, the disassembly and assembly are inconvenient, especially when the operation of dividing the protective film is carried out, the switching frequency of the inflatable shaft is high, and the machining efficiency of equipment can be seriously affected when excessive time is spent on the replacement and disassembly.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects existing in the prior art, the utility model provides the plastic shaft sleeve with the outer diameter added with the spring for the inflatable shaft, which can solve the problem of inconvenient disassembly and assembly of the inflatable shaft in the prior art.

Technical proposal

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the utility model provides an outer diameter additional spring plastic shaft sleeve for an inflatable shaft, which is annular and is formed by encircling a plurality of split blocks, wherein the split blocks are made of plastic materials, the section of each split block is fan-shaped, the end surfaces of adjacent split blocks are attached, and simultaneously, the outer side of the shaft sleeve is coaxially sleeved with an annular spring.

Further, a fixing groove is formed in the outer end of each split block along the peripheral direction of the split block, and the annular spring is sleeved in the fixing groove.

Further, three fixing grooves are respectively formed in each split block, and the fixing grooves are axially distributed at intervals along the split blocks.

Further, the annular width of the fixing groove is larger than that of the annular spring.

Further, the ratio of the inner diameter to the outer diameter of the sleeve is 1:2.

further, three annular springs are equidistantly arranged at intervals.

Further, one of the three ring springs at the intermediate position is located at the middle of the split block.

Further, the distance between the annular spring and the inner edge of the split block is greater than the distance between the annular spring and the outer edge of the split block.

Advantageous effects

Compared with the known public technology, the technical scheme provided by the utility model has the following beneficial effects:

according to the utility model, the annular split blocks are formed by surrounding the annular split blocks to replace the traditional integral air expansion shaft sleeve, so that the shaft sleeves with different annular widths can be formed by freely matching the annular split blocks, and the annular split blocks are suitable for more workpiece sizes, so that the air expansion shaft is not required to be disassembled, and the annular split blocks can be used only by sleeving the shaft sleeves on the outer sides of the air expansion shafts;

the deformation capability and the deformation recovery capability of the whole shaft sleeve are ensured through the plastic material, so that the damage of the shaft sleeve body caused by stress when the shaft sleeve is sleeved on the outer side of a workpiece for a long time is avoided;

the setting through annular spring can fix a plurality of amalgamation piece to after the amalgamation piece atress inflation, can expand and increase the internal diameter of axle sleeve through annular spring, and utilize annular spring's elasticity to let the outside of axle sleeve closely cover at the physiosis axle.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic front view of the overall structure of the embodiment of the present utility model;

FIG. 3 is a schematic top view in partial cross section of an embodiment of the present utility model;

fig. 4 is an exploded view of a main structure according to an embodiment of the present utility model.

Reference numerals in the drawings represent respectively: 1. a split block; 11. a fixing groove; 2. and a ring spring.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", etc., azimuth or positional relationship are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of operations, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The utility model is further described below with reference to examples.

Examples:

the outer diameter of the winding and unwinding air expansion shaft of the existing coating machine or slitting machine is 3 inches or 6 inches, namely the winding and unwinding air expansion shaft is respectively used for clamping workpieces (film roll cores) with corresponding sizes.

However, in the use process of some equipment, the inflatable shafts with the two outer diameters can be switched and installed when needed, but because the inflatable shafts are often of a tubular integral structure and are heavy in mass, the disassembly and assembly are difficult, and therefore enterprises can purchase inflatable shafts with different diameters to be matched with workpieces with different sizes for use, and the cost is increased.

Therefore, this scheme provides an external diameter additional spring plastic axle sleeve for inflatable shaft, please refer to fig. 1-4, axle sleeve in this scheme is annular and by a plurality of piece 1 enclose and close and form, piece 1 is plastic material and the cross-section of every piece 1 is fan-shaped, and the terminal surface pastes between the adjacent piece 1, and the outside coaxial sleeve of axle sleeve has annular spring 2 simultaneously, and plastic material provides toughness, and after inflatable shaft inflated, can be better retract after inflatable shaft gassing, in order to closely laminate in the outside of inflatable shaft.

For example, when the device is applied to a 3-inch workpiece, a 3-inch inflatable shaft sleeve is arranged on the outer side of the workpiece, and a 6-inch inflatable shaft is needed at the moment, and the shaft sleeve in the scheme is only required to be sleeved on the outer side of the inflatable shaft, so that the clamping of the 6-inch tubular workpiece can be achieved according to the ring width dimension of the shaft sleeve (the ring width in the scheme is 3 inches).

When in use, the shaft sleeve is sleeved on the outer side of a workpiece, and expands according to workpieces with different sizes, and the split blocks 1 are fixed by the tensioning force of the annular springs 2.

In the scheme, the outer end of each split block 1 is provided with a fixing groove 11 along the peripheral direction, the annular spring 2 is sleeved in the fixing groove 11, the annular width of the fixing groove 11 is larger than that of the annular spring 2, the distance between the annular spring 2 and the inner edge of the split block 1 is larger than that between the annular spring 2 and the outer edge of the split block 1, and when the shaft sleeve is used, the outer end of the annular spring 2 cannot exceed the outer edge of the split block 1.

Further, three fixing grooves 11 on each split block 1 are respectively formed and are distributed at intervals along the axial direction of the split block 1, meanwhile, three annular springs 2 are arranged at intervals at equal intervals, and the annular spring 2 positioned at the middle position in the three annular springs 2 is positioned at the middle part of the split block 1.

Therefore, the three annular springs 2 uniformly apply force to the shaft sleeve, and when the winding and unwinding inflatable shaft is inflated or deflated, the spring plastic shaft sleeve in the scheme can be inflated and contracted synchronously so as to achieve the purpose of grasping a pipe workpiece, namely, when the inner wall of the pipe is grasped, the pipe can be wound, and when the spring plastic shaft sleeve is contracted and loosened, the pipe can be conveniently wound down.

In this case, the ratio of the inner diameter to the outer diameter of the sleeve is 1:2, the specific dimensions are not so limited, in this case the sleeve has an inner diameter of 3 inches and an outer diameter of 6 inches, and is not particularly limited in practice, and is selected according to the use scenario.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present utility model.

Claims (7)

1. The outer diameter additional spring plastic shaft sleeve for the air expansion shaft is characterized in that the shaft sleeve is annular and is formed by encircling a plurality of splicing blocks (1), the splicing blocks (1) are made of plastic materials, the cross section of each splicing block (1) is fan-shaped, end faces between adjacent splicing blocks (1) are attached, and annular springs (2) are sleeved on the outer side of the shaft sleeve in a coaxial mode;

the three fixing grooves (11) on each split block (1) are respectively formed and are axially distributed at intervals along the split blocks (1).

2. An outer diameter additional spring plastic sleeve for an inflatable shaft according to claim 1, wherein the outer end of each split block (1) is provided with a fixing groove (11) along the outer peripheral direction, and the annular spring (2) is sleeved in the fixing groove (11).

3. An outer diameter additional spring plastic sleeve for an inflatable shaft according to claim 1, wherein the annular width of the fixing groove (11) is larger than that of the annular spring (2).

4. An outer diameter added spring plastic sleeve for an inflatable shaft according to claim 1, wherein the ratio of the inner diameter to the outer diameter of the sleeve is 1:2.

5. an outer diameter additional spring plastic sleeve for an inflatable shaft according to claim 4, wherein three annular springs (2) are equidistantly arranged.

6. An outer diameter additional spring plastic sleeve for an inflatable shaft according to claim 5, wherein the annular spring (2) at the middle position of the three annular springs (2) is positioned at the middle part of the split block (1).

7. An outer diameter additional spring plastic sleeve for an inflatable shaft according to claim 6, wherein the distance between the annular spring (2) and the inner edge of the split block (1) is larger than the distance between the annular spring (2) and the outer edge of the split block (1).