CN205527077U - High accuracy atmospheric pressure mandril that expands - Google Patents
High accuracy atmospheric pressure mandril that expands Download PDFInfo
- Publication number
- CN205527077U CN205527077U CN201620355869.2U CN201620355869U CN205527077U CN 205527077 U CN205527077 U CN 205527077U CN 201620355869 U CN201620355869 U CN 201620355869U CN 205527077 U CN205527077 U CN 205527077U
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- Prior art keywords
- expansion shaft
- piston
- spline
- swelling
- main body
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Abstract
The utility model discloses a high accuracy atmospheric pressure mandril that expands, it is including bloated mandril main part and splines subassembly, the splines subassembly is including a plurality of tight splines of expanding along the radial evenly distributed of mandril main part that expands, the end fixing of the mandril main part that expands there is the spindle nose, wear to be equipped with central trachea in the mandril main part that expands, the cover is equipped with the piston on the trachea of center, the one end of piston is equipped with compression spring, the other end of piston is equipped with solid fixed ring, the inner wall of piston is seted up flutedly, the gas pocket has been seted up to the tracheal lateral part in center, the lateral wall of piston is formed with the toper groove of encircleing in this piston, the toper inslot is equipped with the steel ball, the steel ball passes bloated mandril main part and butt in bloated tight splines, when pouring into compressed air into in the centering trachea, through the steel ball tight splines jack -up of will expanding, when pouring into compressed air into in stopping the centering trachea, the tight splines that expands resets to relaxing the state. The utility model discloses can guarantee that it has better concentricity with bloated mandril to roll up the core to improve production efficiency and production quality.
Description
Technical field
This utility model relates to expansion shaft, particularly relates to a kind of high accuracy air pressure expansion shaft.
Background technology
Expansion shaft is easy to use due to it, in processing and the application of printing industry wide model of paper, plastic sheeting etc..And current expansion shaft mainly operation principle is full of compressed air by the slat gum air bag in expansion shaft and makes air bag swell, so that the swelling spline superincumbent core of outside expansion sleeve on expansion shaft, owing to rubber pneumatic bag and swelling spline are flexible constraint, it is difficult to ensure that core and the concentricity of expansion shaft, it is only used for the equipment of the low production capacity of low speed.
Utility model content
The technical problems to be solved in the utility model is, for the deficiencies in the prior art, a kind of high accuracy air pressure expansion shaft is provided, in order to ensure that core and expansion shaft have preferable concentricity, thus improve production efficiency, avoid due to core and expansion shaft the most concentric and produce equipment vibrations, substantially increase product quality.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that.
nullA kind of high accuracy air pressure expansion shaft，Its expansion shaft main body including tubular and spline assembly，Described spline assembly includes the multiple swelling splines along the radially uniform distribution of expansion shaft main body，Described swelling spline is arranged in expansion shaft main body and the two is slidably connected，The end of described expansion shaft main body is fixed with spindle nose，Described spindle nose is hollow tubular，It is equipped with center trachea in described expansion shaft main body，Described center trachea docks with spindle nose and the two is interconnected，It is arranged with piston between described center trachea and expansion shaft main body and on the trachea of center，One end of described piston is provided with compression spring，Piston Elastic Sliding is made by described compression spring，The other end of described piston is provided with retainer ring，Described Fixing shrink ring is located at that center trachea and this retainer ring and expansion shaft main body are fixing to be connected，The inwall of described piston offers groove，Described groove extends along the length direction of piston，The sidepiece of described center trachea offers pore，By described pore, center trachea is connected with groove，The lateral wall of described piston is formed with the cone tank being surrounded on this piston，The degree of depth of described cone tank is gradually reduced to the direction away from compression spring，It is provided with steel ball in described cone tank，Described steel ball is connected to swelling spline through expansion shaft main body，When spindle nose is to center tracheal strips injecting compressed air，Air-flow is in air passing hole enters groove，And promote piston to move to compression spring direction，Described cone tank is relative with steel ball to slide and passes through steel ball by swelling spline jack-up，When stopping to center tracheal strips injecting compressed air，Described compression spring promotes piston to slide to retainer ring direction，The thrust of steel ball is disappeared by described cone tank，Described swelling spline is reset to relaxation state.
Preferably, the length direction along expansion shaft main body is provided with many group spline assemblies, and often group spline assembly includes 5 swelling splines, and the swelling spline in every two adjacent groups spline assembly is crisscross arranged.
Preferably, wear ring and piston packing it is arranged with on described piston, described center trachea is inserted in spindle nose and the two connects by center trachea screw is fixing, sealed by the first sealing ring between described center trachea and spindle nose, it is provided with the 3rd sealing ring between described retainer ring and center trachea, between described retainer ring and expansion shaft main body, is provided with the second sealing ring.
Preferably, it is connected by spindle nose screw is fixing between described spindle nose with expansion shaft main body.
Preferably, described swelling spline includes counterbore, swelling spline fixed screw it is provided with in described counterbore, described swelling spline fixed screw is screwed together in expansion shaft main body, being arranged with disc-type spring on described swelling spline fixed screw, described disc-type spring is connected between end cap and the swelling spline of swelling spline fixed screw.
Preferably, the end of described spindle nose is provided with swivel joint, and described swivel joint is used for accessing compressed air.
This utility model disclosed high accuracy air pressure expansion shaft, core is sleeved in expansion shaft main body, when user is to center tracheal strips injecting compressed air, groove between piston and center trachea is acted on by air pressure, piston is promoted to slide to compression spring direction, and utilize cone tank and the interaction of steel ball and by swelling spline jack-up, until swelling spline pushes against the inwall in core, can be to materials such as core winding preservative films now by rotating expansion shaft, after having wound, stop to center tracheal strips injecting compressed air, now under the effect of compression spring, piston and steel ball reset, swelling spline is loosened, now can take off core.The expansion shaft of said structure, its synchronization utilizing frame for movement to achieve multiple swelling spline ejects, compared to existing technologies, this utility model can make core keep concentric with expansion shaft main body, it is applicable to the equipment run up, substantially increases production efficiency, in addition, this utility model also avoid owing to core and expansion shaft are the most concentric and produce equipment vibrations, and then improves the quality of production.
Accompanying drawing explanation
Fig. 1 is the side sectional view of this utility model expansion shaft.
Fig. 2 is the partial enlarged drawing in Fig. 1.
Fig. 3 is the side view of this utility model expansion shaft.
Fig. 4 is the structural representation after expansion shaft suit core.
Detailed description of the invention
With embodiment, this utility model is described in more detail below in conjunction with the accompanying drawings.
nullThe utility model discloses a kind of high accuracy air pressure expansion shaft，In conjunction with shown in Fig. 1 to Fig. 4，Its expansion shaft main body 5 including tubular and spline assembly，Described spline assembly includes the multiple swelling splines 6 along the radially uniform distribution of expansion shaft main body 5，Described swelling spline 6 is arranged in expansion shaft main body 5 and the two is slidably connected，The end of described expansion shaft main body 5 is fixed with spindle nose 2，Described spindle nose 2 is hollow tubular，It is equipped with center trachea 9 in described expansion shaft main body 5，Described center trachea 9 docks with spindle nose 2 and the two is interconnected，Piston 14 it is arranged with between described center trachea 9 and expansion shaft main body 5 and on center trachea 9，One end of described piston 14 is provided with compression spring 11，Piston 14 Elastic Sliding is made by described compression spring 11，The other end of described piston 14 is provided with retainer ring 16，Described retainer ring 16 is sheathed on that center trachea 9 and this retainer ring 16 and expansion shaft main body 5 is fixing to be connected，The inwall of described piston 14 offers groove 21，Described groove 21 extends along the length direction of piston 14，The sidepiece of described center trachea 9 offers pore 22，By described pore 22, center trachea 9 is connected with groove 21，The lateral wall of described piston 14 is formed with the cone tank 23 being surrounded on this piston 14，The degree of depth of described cone tank 23 is gradually reduced to the direction away from compression spring 11，It is provided with steel ball 17 in described cone tank 23，Described steel ball 17 is connected to swelling spline 6 through expansion shaft main body 5，When spindle nose 2 injecting compressed air in center trachea 9，Air-flow is in air passing hole 22 enters groove 21，And promote piston 14 to move to compression spring 11 direction，Described cone tank 23 is relative with steel ball 17 to slide and passes through steel ball 17 by swelling spline 6 jack-up，When stopping injecting compressed air in center trachea 9，Described compression spring 11 promotes piston 14 to slide to retainer ring 16 direction，The thrust of steel ball 17 is disappeared by described cone tank 23，Described swelling spline 6 is reset to relaxation state.
The high accuracy air pressure expansion shaft of said structure, core 20 is sleeved in expansion shaft main body 5, when user's injecting compressed air in center trachea 9, groove 21 between piston 14 and center trachea 9 is acted on by air pressure, piston 14 is promoted to slide to compression spring 11 direction, and utilize cone tank 23 and the interaction of steel ball 17 and by swelling spline 6 jack-up, until swelling spline 6 pushes against in the inwall of core 20, the materials such as preservative film can be wound to core 20 now by rotating expansion shaft, after having wound, stop injecting compressed air in center trachea 9, now under the effect of compression spring 11, piston 14 and steel ball 17 reset, swelling spline 6 is loosened, now can take off core.The expansion shaft of said structure, its synchronization utilizing frame for movement to achieve multiple swelling spline 6 ejects, compared to existing technologies, this utility model can make core 20 and expansion shaft main body 5 keep concentric, it is applicable to the equipment run up, substantially increases production efficiency, in addition, this utility model also avoid owing to core and expansion shaft are the most concentric and produce equipment vibrations, and then improves the quality of production.
As a kind of optimal way, the length direction along expansion shaft main body 5 is provided with many group spline assemblies, and often group spline assembly includes 5 swelling splines 6, and the swelling spline 6 in every two adjacent groups spline assembly is crisscross arranged.
Further, wear ring 12 and piston packing 15 it is arranged with on described piston 14, described center trachea 9 is inserted in spindle nose 2 and the two connects by center trachea screw 10 is fixing, sealed by the first sealing ring 4 between described center trachea 9 and spindle nose 2, it is provided with the 3rd sealing ring 19 between described retainer ring 16 and center trachea 9, between described retainer ring 16 and expansion shaft main body 5, is provided with the second sealing ring 18.It is connected by spindle nose screw 3 is fixing between described spindle nose 2 and expansion shaft main body 5.
In the present embodiment, described swelling spline 6 includes counterbore, swelling spline fixed screw 7 it is provided with in described counterbore, described swelling spline fixed screw 7 is screwed together in expansion shaft main body 5, it is arranged with disc-type spring 8 on described swelling spline fixed screw 7, described disc-type spring 8 is connected between end cap and the swelling spline 6 of swelling spline fixed screw 7, by the thrust of disc-type spring 8, swelling spline 6 can be retracted in expansion shaft main body 5 in a relaxed state.
Further, the end of described spindle nose 2 is provided with swivel joint 1, and described swivel joint 1 is used for accessing compressed air.
This utility model disclosed high accuracy air pressure expansion shaft, it uses rigid constraint to instead of the flexible constraint of tradition rubber pneumatic bag, it is ensured that core and expansion shaft reach the effect of concentric.Additionally, expansion shaft spindle nose and main body swelling spline cylindrical carry out ground finish after can assembling again, in order to eliminate rigging error, reduce beating of expansion shaft.
The above is this utility model preferred embodiment, is not limited to this utility model, all amendment, equivalent or improvement etc. made in technical scope of the present utility model, should be included in the range of this utility model protected.
Claims (6)
- null1. a high accuracy air pressure expansion shaft，It is characterized in that，Include expansion shaft main body and the spline assembly of tubular，Described spline assembly includes the multiple swelling splines along the radially uniform distribution of expansion shaft main body，Described swelling spline is arranged in expansion shaft main body and the two is slidably connected，The end of described expansion shaft main body is fixed with spindle nose，Described spindle nose is hollow tubular，It is equipped with center trachea in described expansion shaft main body，Described center trachea docks with spindle nose and the two is interconnected，It is arranged with piston between described center trachea and expansion shaft main body and on the trachea of center，One end of described piston is provided with compression spring，Piston Elastic Sliding is made by described compression spring，The other end of described piston is provided with retainer ring，Described Fixing shrink ring is located at that center trachea and this retainer ring and expansion shaft main body are fixing to be connected，The inwall of described piston offers groove，Described groove extends along the length direction of piston，The sidepiece of described center trachea offers pore，By described pore, center trachea is connected with groove，The lateral wall of described piston is formed with the cone tank being surrounded on this piston，The degree of depth of described cone tank is gradually reduced to the direction away from compression spring，It is provided with steel ball in described cone tank，Described steel ball is connected to swelling spline through expansion shaft main body，When spindle nose is to center tracheal strips injecting compressed air，Air-flow is in air passing hole enters groove，And promote piston to move to compression spring direction，Described cone tank is relative with steel ball to slide and passes through steel ball by swelling spline jack-up，When stopping to center tracheal strips injecting compressed air，Described compression spring promotes piston to slide to retainer ring direction，The thrust of steel ball is disappeared by described cone tank，Described swelling spline is reset to relaxation state.
- 2. high accuracy air pressure expansion shaft as claimed in claim 1, it is characterised in that the length direction along expansion shaft main body is provided with many group spline assemblies, and often group spline assembly includes 5 swelling splines, and the swelling spline in every two adjacent groups spline assembly is crisscross arranged.
- 3. high accuracy air pressure expansion shaft as claimed in claim 1, it is characterized in that, wear ring and piston packing it is arranged with on described piston, described center trachea is inserted in spindle nose and the two connects by center trachea screw is fixing, sealed by the first sealing ring between described center trachea and spindle nose, it is provided with the 3rd sealing ring between described retainer ring and center trachea, between described retainer ring and expansion shaft main body, is provided with the second sealing ring.
- 4. high accuracy air pressure expansion shaft as claimed in claim 1, it is characterised in that be connected by spindle nose screw is fixing between described spindle nose with expansion shaft main body.
- 5. high accuracy air pressure expansion shaft as claimed in claim 1, it is characterized in that, described swelling spline includes counterbore, swelling spline fixed screw it is provided with in described counterbore, described swelling spline fixed screw is screwed together in expansion shaft main body, being arranged with disc-type spring on described swelling spline fixed screw, described disc-type spring is connected between end cap and the swelling spline of swelling spline fixed screw.
- 6. high accuracy air pressure expansion shaft as claimed in claim 1, it is characterised in that the end of described spindle nose is provided with swivel joint, and described swivel joint is used for accessing compressed air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620355869.2U CN205527077U (en) | 2016-04-25 | 2016-04-25 | High accuracy atmospheric pressure mandril that expands |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620355869.2U CN205527077U (en) | 2016-04-25 | 2016-04-25 | High accuracy atmospheric pressure mandril that expands |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205527077U true CN205527077U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620355869.2U Expired - Fee Related CN205527077U (en) | 2016-04-25 | 2016-04-25 | High accuracy atmospheric pressure mandril that expands |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205527077U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106737292A (en) * | 2016-12-27 | 2017-05-31 | 江苏锦厚新材料科技有限公司 | A kind of easily assembling cardboard tube fixing device for overlay film volume |
| CN109353898A (en) * | 2018-11-29 | 2019-02-19 | 广州里工实业有限公司 | Fast disassembly type spline air-expanding shaft |
| CN109551330A (en) * | 2019-01-04 | 2019-04-02 | 杭州龙盛工贸有限公司 | A kind of dedicated vapour-pressure type Float principal axis of die casting deburring |
| CN109896354A (en) * | 2019-04-22 | 2019-06-18 | 广东包庄科技有限公司 | A kind of winder gas expansion shaft rolling-up mechanism |
| CN111776883A (en) * | 2020-07-13 | 2020-10-16 | 陈刚 | Even physiosis axle of atress |
-
2016
- 2016-04-25 CN CN201620355869.2U patent/CN205527077U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106737292A (en) * | 2016-12-27 | 2017-05-31 | 江苏锦厚新材料科技有限公司 | A kind of easily assembling cardboard tube fixing device for overlay film volume |
| CN109353898A (en) * | 2018-11-29 | 2019-02-19 | 广州里工实业有限公司 | Fast disassembly type spline air-expanding shaft |
| CN109551330A (en) * | 2019-01-04 | 2019-04-02 | 杭州龙盛工贸有限公司 | A kind of dedicated vapour-pressure type Float principal axis of die casting deburring |
| CN109551330B (en) * | 2019-01-04 | 2024-02-23 | 杭州龙盛工贸有限公司 | Special vapour-pressure type floating spindle of die casting burring |
| CN109896354A (en) * | 2019-04-22 | 2019-06-18 | 广东包庄科技有限公司 | A kind of winder gas expansion shaft rolling-up mechanism |
| CN111776883A (en) * | 2020-07-13 | 2020-10-16 | 陈刚 | Even physiosis axle of atress |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180518 Address after: 529533 south section of science and technology five road, Fukuoka Industrial Park, Yangjiang high tech Zone, Guangdong Patentee after: Changlong Technology (Yangjiang) Co., Ltd. Address before: 518008 9 Chuang Road, Shilong third industrial zone, Shiyan street, Baoan District, Shenzhen, Guangdong Patentee before: Changlongxing Science & Technology (Shenzhen) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20180425 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |