CN212024420U

CN212024420U - Novel inflating shaft

Info

Publication number: CN212024420U
Application number: CN202020536462.6U
Authority: CN
Inventors: 楼力峰; 杨奋理; 陶武彪
Original assignee: Zhejiang Safferno Technology Development Co ltd
Current assignee: Zhejiang Safferno Technology Development Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-11-27
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a novel inflation shaft, which comprises a hollow main shaft, an expansion block and an inflation device, wherein the center of the main shaft is provided with a main shaft hole, the inflation device is communicated with the main shaft hole, the main shaft is provided with the expansion block hole, the expansion block is telescopically arranged in the expansion block hole, the main shaft is also provided with an expansion hole and an air flow channel, the outer end of the air flow channel is communicated with the expansion hole, and the inner end of the air flow channel is communicated with the main shaft hole; the expansion hole is communicated with the expansion block hole, the inflation shaft further comprises an expandable rubber sheet, the rubber sheet is arranged in the expansion hole and covers the outer port of the airflow channel, and the rubber sheet separates the airflow channel and the expansion block hole in an airtight mode. The utility model discloses replace prior art's inflation gasbag with the sheet rubber that the volume is littleer, not only be difficult to appear damaged, it is also comparatively convenient to change moreover.

Description

Novel inflating shaft

Technical Field

The utility model relates to a weaving part especially indicates a novel axle of aerifing.

Background

The inflating shaft is a special winding and unwinding shaft, has wide application range, can be suitable for winding, unwinding and cutting machines, and even has wide application in the light metal industry. The conventional inflating shaft mainly comprises a hollow main shaft body, an expanding air bag and an expanding block, wherein the expanding block is pushed to protrude from the outer surface of the hollow main shaft body after the expanding air bag is inflated at high pressure, and can retract after being deflated, so that a winding core can be taken out conveniently.

Present axle of aerifing all includes the gasbag, and this kind of structure is through using the back for a long time, and the damage often can appear in inside inflation gasbag, leads to whole axle of aerifing unable normal work, and this just needs to change inflation gasbag, and actual conditions is, inflation gasbag's change specialty requirement is very high, and usual production (weaving) enterprise does not possess such talent.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel aerify axle, its aim at provide the axle of aerifing of a brand-new structure, solved the trouble problem of inflation airbag change.

In order to achieve the purpose, the utility model provides a technical scheme as follows:

a novel inflation shaft comprises a hollow main shaft, an expansion block and an inflation device, wherein a main shaft is arranged at the center of the main shaft

The inflation device is communicated with the spindle hole, the spindle is provided with an expansion block hole, the expansion block is telescopically arranged in the expansion block hole, the spindle is also provided with an expansion hole and an air flow channel, the outer end of the air flow channel is communicated with the expansion hole, and the inner end of the air flow channel is communicated with the spindle hole; the expansion hole is communicated with the expansion block hole, the inflation shaft further comprises an expandable rubber sheet, the rubber sheet is arranged in the expansion hole and covers the outer port of the airflow channel, and the rubber sheet separates the airflow channel and the expansion block hole in an airtight mode.

In a preferred embodiment, the rubber sheet comprises an integrally formed horizontal part and sealing parts symmetrically arranged at two sides of the horizontal part, each sealing part comprises an inclined plane part and a semicircular part, and two ends of the inclined plane part are respectively connected with the horizontal part and the semicircular part; the expansion hole includes a first expansion hole portion and a trapezoidal portion having the same shape as the rubber sheet in an unexpanded state. When the rubber sheets are not expanded, all the rubber sheets are positioned in the first expansion hole part; when the rubber sheet expands, part of the rubber sheet is positioned in the trapezoidal part.

In a preferred embodiment, the inflation shaft further includes an elongated sealing sheet, a stepped portion is provided at an intersection of the first expansion hole portion and the stepped portion, and the sealing sheet is interposed between the stepped portion and the semicircular portion. The sealing performance can be enhanced by the arrangement of the sealing sheet.

In a preferred embodiment, the gas flow passage and the expansion hole both extend axially along the main axis, and the gas flow passage and the expansion hole have the same length.

In a recommended embodiment, in order to facilitate air outlet, a bell mouth is arranged at the joint of the air flow channel and the expansion hole.

In a preferred embodiment, the expansion hole, the rubber sheet, the airflow channel, the expansion block and the expansion block hole together form one expansion unit, three expansion units are arranged on the circumference of the same main shaft, and the three expansion units are arranged at equal circumferential angles.

In a preferred embodiment, three expansion cells arranged at an equal circumferential angle form one expansion section, and at least two expansion sections are arranged on the main shaft, and adjacent expansion sections are separated from each other.

In a recommended embodiment, the inflation shaft further comprises a hollow elastic shaft, an elastic shaft hole is formed in the center of the elastic shaft, the elastic shaft is filled in the main shaft hole, the outer surface of the elastic shaft is attached to the inner surface of the main shaft hole, the inflation device is communicated with the elastic shaft hole, a second air flow channel is formed in the elastic shaft, and the second air flow channel is communicated with the air flow channel.

In a preferred embodiment, the elastic shaft has three equally spaced planes and equally spaced circular arc surfaces, and the circular arc surfaces are connected with the planes, so that the elastic shaft is prevented from rotating, and the smoothness of the second airflow passage and the airflow passage is ensured.

According to the above-mentioned right the utility model discloses a description can know, the advantage of the utility model lies in:

1. the utility model uses the air charging device to charge air into the main shaft hole, and the rubber sheet is expanded (bulging deformation) through the air flow channel and pushes the expansion block to move outwards so as to fix the winding core; after deflation, the expansion block falls into the expansion block hole along with the recovery of the rubber sheet, thereby playing the role of taking in and unreeling.

2. Compared with the inflatable air bag in the prior art, the utility model discloses a sheet rubber volume is less, is difficult to not only appear damaged, and it is also comparatively convenient to change moreover.

Drawings

FIG. 1 is a schematic structural view of an uninflated state according to an embodiment.

FIG. 2 is a schematic view of an inflated structure according to an embodiment.

FIG. 3 is a schematic view of the structure of an expansion hole of one embodiment.

Fig. 4 is a schematic structural diagram of the second embodiment.

FIG. 5 is a schematic view of the structure of an expansion hole of the second embodiment.

Fig. 6 is a schematic structural diagram of the third embodiment.

Detailed Description

For further understanding of the present invention, the present invention will be described in detail with reference to the following examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.

Example one

Referring to fig. 1, a novel inflation shaft comprises a hollow main shaft 1, an elongated expansion block 2, an inflation device (not shown) and a rubber sheet 3.

Referring to fig. 3, a spindle hole 10 is formed in the center of the spindle 1, the inflator is communicated with the spindle hole 10, an expansion block hole 20 is formed in the spindle 1, and the expansion block 2 is telescopically mounted in the expansion block hole 20. The main shaft 1 is also provided with an expansion hole 4 and an air flow channel 5, the outer end of the air flow channel 5 is communicated with the expansion hole 4, the inner end of the air flow channel 5 is communicated with the main shaft hole 10, and a bell mouth is arranged at the joint of the air flow channel 5 and the expansion hole 4; the expansion hole 4 is communicated with the expansion block hole 20. As can be seen from fig. 1, the rubber sheet 3 is installed in the expansion hole 4, and includes an integrally formed horizontal portion 31 and sealing portions symmetrically disposed at both sides of the horizontal portion 31, and the horizontal portion 31 covers the outer port of the airflow passage 5; the sealing portion includes a slope portion 32 and a semicircular portion 33, and both ends of the slope portion 32 are connected to the horizontal portion 31 and the semicircular portion 33, respectively. With continued reference to fig. 3, bounded by the broken lines in the figure, the expansion holes 4 include a first expansion hole portion having the same shape as the unexpanded state of the rubber sheet 3 and a trapezoidal portion 41. The first expansion hole portion includes a horizontal portion 42, inclined portions 43 at both sides of the horizontal portion 42, and semicircular portions 44 connected to the inclined portions 43, respectively. When the rubber sheet 3 is not expanded, the shape of the rubber sheet 3 is the same as that of the first expanded hole portion, and all the rubber sheets 3 are located in the first expanded hole portion. As shown in fig. 2, when the rubber sheet 3 expands, the horizontal portion 31 of the rubber sheet 3 bulges and enters the trapezoidal portion 41, the inclined surface portion 32 and the semicircular portion 33 remain substantially in the first expansion hole portion, and the airflow passage 5 and the bump hole 20 are air-tightly separated by these two portions.

In the preferred embodiment, the air flow passage 5 and the expansion hole 4 both extend axially along the main shaft 1, and the air flow passage 5 and the expansion hole 4 have the same axial length.

In addition, the expansion hole 4, the rubber sheet 3, the air flow channel 5, the expansion block 2 and the expansion block hole 20 together form one expansion unit 6 (shown by a closed curve in fig. 1), three expansion units 6 are arranged on the same main shaft circumference, and the three expansion units 6 are arranged at equal circumferential angles. While three expansion units 6 arranged at an equal circumferential angle form one expansion section, as can be seen from fig. 1, in the first embodiment, two expansion sections are arranged on the main shaft, and the adjacent expansion sections are separated from each other.

Example two

Referring to fig. 4 and 5 together, the second embodiment is substantially the same as the first embodiment, and mainly differs therefrom in that in the present embodiment, the inflation shaft further includes a long sealing sheet 7 (made of an elastic material, such as rubber), a step portion 45 is provided at the intersection of the first expansion hole portion and the trapezoidal portion 41, and the sealing sheet 7 is clamped between the step portion 45 and the semicircular portion 33. The sealing performance can be enhanced by the arrangement of the sealing sheet 7.

EXAMPLE III

Referring to fig. 6, the third embodiment is substantially the same as the second embodiment, and the main difference is that in this embodiment, the inflation shaft further includes a hollow elastic shaft 8, an elastic shaft hole 81 is formed in the center of the elastic shaft 8, the elastic shaft 8 is filled in the main shaft hole, the outer surface of the elastic shaft 8 is attached to the inner surface of the main shaft hole, the inflation device is communicated with the elastic shaft hole 81, a second air flow channel 82 is formed in the elastic shaft 8, and the second air flow channel 82 is communicated with the air flow channel 5.

In the preferred embodiment, the flexible shaft 8 has three equally spaced flat surfaces and equally spaced arcuate surfaces, which are connected to prevent rotation of the flexible shaft and ensure the second air flow path and the air flow path are unobstructed.

The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides a novel inflatable shaft, includes hollow main shaft, bloated piece and aerating device, the center of main shaft is equipped with the main shaft hole, aerating device with main shaft hole intercommunication, be equipped with bloated piece hole on the main shaft, bloated piece telescopically installs in bloated piece downtheholely, its characterized in that: the main shaft is also provided with an expansion hole and an air flow channel, the outer end of the air flow channel is communicated with the expansion hole, and the inner end of the air flow channel is communicated with the main shaft hole; the expansion hole is communicated with the expansion block hole, the inflation shaft further comprises an expandable rubber sheet, the rubber sheet is arranged in the expansion hole and covers the outer port of the airflow channel, and the rubber sheet separates the airflow channel and the expansion block hole in an airtight mode.

2. The inflatable shaft of claim 1, wherein: the rubber sheet comprises an integrally formed horizontal part and sealing parts symmetrically arranged on two sides of the horizontal part, each sealing part comprises an inclined plane part and a semicircular part, and two ends of each inclined plane part are respectively connected with the horizontal part and the semicircular part; the expansion hole includes a first expansion hole portion and a trapezoidal portion having the same shape as the rubber sheet in an unexpanded state.

3. The inflatable shaft of claim 2, wherein: the inflation shaft further comprises a long strip-shaped sealing sheet, a step portion is arranged at the intersection of the first expansion hole portion and the trapezoid portion, and the sealing sheet is clamped between the step portion and the semicircular portion.

4. The inflatable shaft of claim 2, wherein: the airflow channel and the expansion hole extend along the axial direction of the main shaft, and the length of the airflow channel is the same as that of the expansion hole.

5. The inflatable shaft of claim 1, wherein: and a horn mouth is arranged at the joint of the airflow channel and the expansion hole.

6. The inflation shaft of any one of claims 1 to 4, wherein: the expansion hole, the rubber sheet, the airflow channel, the expansion block and the expansion block hole form an expansion unit together, three expansion units are arranged on the same circumference of the main shaft, and the three expansion units are arranged at equal circumferential angles.

7. The inflatable shaft of claim 6, wherein: the three expansion units arranged at equal circumferential angles form an expansion section, at least two expansion sections are arranged on the main shaft, and adjacent expansion sections are mutually separated.

8. The inflation shaft of claim 7, wherein: the inflatable shaft further comprises a hollow elastic shaft, an elastic shaft hole is formed in the center of the elastic shaft, the elastic shaft is filled in the main shaft hole, the outer surface of the elastic shaft is attached to the inner surface of the main shaft hole, the inflatable device is communicated with the elastic shaft hole, a second airflow channel is formed in the elastic shaft and is communicated with the airflow channel.

9. The inflation shaft of claim 8, wherein: the elastic shaft is provided with three planes which are arranged at equal intervals and arc surfaces which are arranged at equal intervals, and the arc surfaces are connected with the planes.