CN2265359Y - Aluminium alloy air-expansion axle - Google Patents
Aluminium alloy air-expansion axle Download PDFInfo
- Publication number
- CN2265359Y CN2265359Y CN 96208431 CN96208431U CN2265359Y CN 2265359 Y CN2265359 Y CN 2265359Y CN 96208431 CN96208431 CN 96208431 CN 96208431 U CN96208431 U CN 96208431U CN 2265359 Y CN2265359 Y CN 2265359Y
- Authority
- CN
- China
- Prior art keywords
- air
- expansion
- bar
- shaft
- paper tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an aluminium alloy air expansion shaft used in printing industry, packaging industry, paper industry, winding industry, etc. Both ends of the shaft body are matched with shaft heads, and the abnormity groove of the shaft body is provided with long key type expansion bars and separate air bladders. An air nozzle is communicated with all air bladders. When the air expansion shaft works, the air bladder is inflated and expanded via the air nozzle to cause inner expansion bar to expand outwards and support a paper tube to rotate. When the expansion bar stops inflation, the expansion bar is reset by springs. The air expansion shaft has light weight and overcomes the defects that the paper tube rotates, jumps, and has inaccurate position after the short key is expanded in the original technology. The coiling precision of the paper tube is improved, and the production quality can be ensured.
Description
The utility model relates to a kind of transmission shaft of reel sheet material or wire rod.
In the equipment such as the cutting machine in industries such as printing, packing, papermaking, coiling, rewinding machine, printer, coating machine, compounding machine, wire coiling machine, drive the paper tube of coiling or the power drive that plastic pipe rotates, all be unable to do without the inflatable axle, therefore, the structural behaviour of inflatable axle will directly influence the coiling precision of sheet material or wire rod.The inflatable axle of present domestic use is the short key formula of the single gas courage structure of steel pipe type, promptly make axis body with hollow steel pipe, in shared gas courage is housed, a plurality of short keys that expand to be promoted by gas courage bars that expand are set on the axis body, the defective of its existence has: the 1. axis body deal of steel pipe system weight; 2. the invar inside pipe wall is non-finished surface, there is the irregular phenomenon of wall thickness in raw MAT'L itself, besides the bar that expands by a plurality of 100mm about long short key form, make each the bloated bar behind the distending can not be on the same circular section beating when this height causes paper tube or plastic pipe rotation for a moment; 3. owing to short key formula, the junction is too many, and paper tube is if segmentation is used, and as the narrow product of adhesive tape one class, the drawback that certainly will cause the paper tube location to be forbidden all will influence the coiling precision.
The utility model proposes the high aluminum alloy inflatable axle of a kind of precision of reeling at the existing in prior technology defective.
The utility model is achieved by the following scheme, two ends at axis body have been press-fitted spindle nose, axis body is provided with the gentle courage of bar that expands, valve on arbitrary spindle nose communicates with the gas courage, its invention is that described bloated bar is single long key formula from left to right in axis body abnormity groove, and each bloated bar all has an independently gas courage, forms long many gas of key bladder structure, and at the two ends of axis body periphery the spring that the bar that expands resets is set.
The utility model compared with prior art, bar is single long key formula and many gas bladder structure owing to expand, the paper tube rotation that having overcome just differs after the short key of former technology bulges is caused is beated and is located inaccurate defective, the product design that improved paper tube coiling accuracy guarantee is widely used in the industries such as printing, packing, papermaking, coiling.
Description of drawings.
Fig. 1 is the utility model structural representation.
Fig. 2 is the A-A cutaway view of Fig. 1.
Be described in detail again below in conjunction with above-mentioned accompanying drawing embodiment.
Shown in Fig. 1～2, the main body of aluminum alloy inflatable axle part axis body (4) is in addition made with aluminum alloy, handle through inferior light hardness on the surface, process the special-shaped groove of 3～8 circumference uniform distributions on the axis body from left to right, the bar (3) that expands is single long key formula in special-shaped groove, and each bloated bar all has an independently gas courage, it is right that the gentle courage of bar (3) (6) that expands is provided with 3-8, and to be provided with 5 pairs for good, the bar that expands is made with aluminum alloy, and the gas courage is made with withstand voltage oil resistant butyl rubber.The axis body two ends have been press-fitted spindle nose (1), arbitrary spindle nose is provided with valve (5), this valve communicates with all gas courages, bar expandable in special-shaped groove expands, when the unaerated of gas courage, the bar that expands is ensconced in the axis body abnormity groove, after the inflation, the gas courage expands, and the bar that promotes to expand expands outwardly, and forms certain pressure, make the paper tube or the plastic pipe stretching (profile of tooth of the bar clamping face that expands is exactly to be the stretching design-calculated) that are sleeved on the axis body periphery, rotate thereby drive paper tube or plastic pipe, the work of inflatable axle finishes, and the bar that expands is resetted by the spring that is arranged on axis body periphery two ends (2).
Because axis body adopts the aluminum alloy of lightweight to make, so overall weight alleviates greatly.
Claims (2)
1. aluminum alloy inflatable axle, be press-fitted spindle nose (1) at the two ends of axis body (4), axis body is provided with the gentle courage of bloated bar (3) (6), valve on arbitrary spindle nose (5) communicates with the gas courage, it is characterized in that described bloated bar (3) is single long key formula from left to right in axis body abnormity groove, and each bloated bar all has an independently gas courage (6), and at the two ends of axis body periphery the spring (2) that the bar that expands resets is set.
2. aluminum alloy inflatable axle as claimed in claim 1 is characterized in that the gentle courage of described bloated bar (3) (6) is provided with 3～8 pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96208431 CN2265359Y (en) | 1996-04-08 | 1996-04-08 | Aluminium alloy air-expansion axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96208431 CN2265359Y (en) | 1996-04-08 | 1996-04-08 | Aluminium alloy air-expansion axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2265359Y true CN2265359Y (en) | 1997-10-22 |
Family
ID=33892434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96208431 Expired - Fee Related CN2265359Y (en) | 1996-04-08 | 1996-04-08 | Aluminium alloy air-expansion axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2265359Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674049A (en) * | 2012-03-02 | 2012-09-19 | 安徽省金正塑业有限公司 | Winding roller of plastic film winding rack |
| CN102927114A (en) * | 2011-08-11 | 2013-02-13 | 吴江市三和精工机械有限公司 | Key bar type pneumatic shaft |
-
1996
- 1996-04-08 CN CN 96208431 patent/CN2265359Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927114A (en) * | 2011-08-11 | 2013-02-13 | 吴江市三和精工机械有限公司 | Key bar type pneumatic shaft |
| CN102674049A (en) * | 2012-03-02 | 2012-09-19 | 安徽省金正塑业有限公司 | Winding roller of plastic film winding rack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |