CN202356486U - Sealing piston for hydraulic forming - Google Patents
Sealing piston for hydraulic forming Download PDFInfo
- Publication number
- CN202356486U CN202356486U CN2011204448856U CN201120444885U CN202356486U CN 202356486 U CN202356486 U CN 202356486U CN 2011204448856 U CN2011204448856 U CN 2011204448856U CN 201120444885 U CN201120444885 U CN 201120444885U CN 202356486 U CN202356486 U CN 202356486U
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- Prior art keywords
- piston
- utility
- model
- pipe
- packed
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- Expired - Fee Related
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Abstract
The utility model discloses a sealing piston for hydraulic forming. The end of the sealing piston is stepped. The sealing piston for hydraulic forming is in the stepped design, each step is small, the difference between each step and a pipe diameter is small, the inner wall of a pipe is cut under the action of axial thrust, and the size of a cutting face is identical with that of the piston, so that excellent sealing effects are achieved. In addition, as outward acting force is not applied to the inner wall of the pipe, axial movement of pipe ends is quite smooth, and material compensation in the forming process of the pipe is facilitated.
Description
Technical field
The utility model relates to the shaped by fluid pressure field of part, relates in particular to a kind of packed-piston that is used for shaped by fluid pressure.
Background technology
In the shaped by fluid pressure technical process of metal, for example in the forming process of pipe, need to adopt seal that the end face of pipe is sealed.With reference to figure 1a-1c, be the sketch map of the seal that adopts in the prior art shaped by fluid pressure 1 sealing.Tubular member 2 is arranged between patrix 3 and the counterdie 4.The two ends that sealing part 1 is arranged on tubular member 2 seal.But the end of seal 1 of the prior art is taper.This just causes sealing effectiveness poor.In addition, because the conical surface makes the frictional force between its outer wall and the mould very big to the active force of inside pipe wall, the end of pipe is difficult to move axially, so the material compensation difficulty.
Therefore, need provide a kind of packed-piston that is used for shaped by fluid pressure to address the above problem.
The utility model content
In order to address this problem, the utility model discloses a kind of packed-piston that is used for shaped by fluid pressure, the end of said packed-piston is set to step-like.
Preferably, the end of said packed-piston is provided with three steps.
Preferably, the height of said each step is between 0-2 centimetre.
Preferably, the height of said each step is being 1.5 centimetres.
Preferably, the semidiameter between adjacent two said steps is between 0.5-1 centimetre.
Preferably, the semidiameter between adjacent two said steps is 0.55 centimetre.
Preferably, the semidiameter between adjacent two said steps is 0.75 centimetre.
The packed-piston that is used for shaped by fluid pressure of the utility model; Because packed-piston has adopted the step design, each step is very little, and step and caliber difference are also very little; Under the axial thrust effect; Inside pipe wall is produced cutting,, thereby reach good sealing effectiveness because cutting face and piston size are in full accord.In addition, owing to there is not the outside active force of inside pipe wall, so pipe end moves axially very smooth and easyly, is convenient to the compensation of pipe material in forming process.
In the utility model content part, introduced the notion of a series of reduced forms, this will further explain in specific embodiment part.The utility model content part does not also mean that key feature and the essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection domain of attempting to confirm technical scheme required for protection.
Below in conjunction with accompanying drawing, specify the advantage and the characteristic of the utility model.
Description of drawings
Fig. 1 a-1c is the seal sealing sketch map that adopts in the prior art shaped by fluid pressure;
Fig. 2 a-2c is the sketch map according to the packed-piston sealing that is used for shaped by fluid pressure of an embodiment of the utility model.
The specific embodiment
In the description hereinafter, provided a large amount of concrete details and the utility model has been understood more completely so that provide.Yet, it will be apparent to one skilled in the art that the utility model can need not one or more these details and be able to enforcement.In other example,, describe for technical characterictics more well known in the art for fear of obscuring with the utility model.
In order thoroughly to understand the utility model, detailed structure will be proposed in following description.Obviously, the execution of the utility model is not limited to the specific details that those skilled in the art has the knack of.The preferred embodiment of the utility model is described in detail as follows, yet except these were described in detail, the utility model can also have other embodiments.
Below in conjunction with accompanying drawing the embodiment of the utility model is done detailed description.
With reference to figure 2a-2c, be sketch map according to the packed-piston that is used for shaped by fluid pressure 10 sealings of an embodiment of the utility model.Tubular member 20 is arranged between patrix 30 and the counterdie 40.The two ends that sealing piston 10 is arranged on tubular member 20 seal.The end of sealing piston 10 is set to step-like.Preferably, the end of packed-piston 10 is provided with three steps.The height of each step preferably is 1.5 centimetres between 0-2 centimetre.Semidiameter between adjacent two steps preferably can be selected 0.55 centimetre and 0.75 centimetre between 0.5-1 centimetre.
The packed-piston that is used for shaped by fluid pressure of the utility model; Because packed-piston has adopted the step design, each step is very little, and step and caliber difference are also very little; Under the axial thrust effect; Inside pipe wall is produced cutting,, thereby reach good sealing effectiveness because cutting face and piston size are in full accord.In addition, owing to there is not the outside active force of inside pipe wall, so pipe end moves axially very smooth and easyly, is convenient to the compensation of pipe material in forming process.
The utility model is illustrated through the foregoing description, but should be understood that, the foregoing description just is used for for example and illustrative purposes, but not is intended to the utility model is limited in the described scope of embodiments.It will be understood by those skilled in the art that in addition; The utility model is not limited to the foregoing description; Instruction according to the utility model can also be made more kinds of variants and modifications, and these variants and modifications all drop in the utility model scope required for protection.The protection domain of the utility model is defined by appended claims book and equivalent scope thereof.
Claims (7)
1. a packed-piston that is used for shaped by fluid pressure is characterized in that, the end of said packed-piston is set to step-like.
2. according to the described packed-piston that is used for shaped by fluid pressure of claim 1, it is characterized in that the end of said packed-piston is provided with three steps.
3. according to the described packed-piston that is used for shaped by fluid pressure of claim 2, it is characterized in that the height of said each step is between 0-2 centimetre.
4. according to the described packed-piston that is used for shaped by fluid pressure of claim 3, it is characterized in that the height of said each step is being 1.5 centimetres.
5. according to the described packed-piston that is used for shaped by fluid pressure of claim 2, it is characterized in that the semidiameter between adjacent two said steps is between 0.5-1 centimetre.
6. according to the described packed-piston that is used for shaped by fluid pressure of claim 5, it is characterized in that the semidiameter between adjacent two said steps is 0.55 centimetre.
7. according to the described packed-piston that is used for shaped by fluid pressure of claim 5, it is characterized in that the semidiameter between adjacent two said steps is 0.75 centimetre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204448856U CN202356486U (en) | 2011-11-11 | 2011-11-11 | Sealing piston for hydraulic forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204448856U CN202356486U (en) | 2011-11-11 | 2011-11-11 | Sealing piston for hydraulic forming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202356486U true CN202356486U (en) | 2012-08-01 |
Family
ID=46567703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204448856U Expired - Fee Related CN202356486U (en) | 2011-11-11 | 2011-11-11 | Sealing piston for hydraulic forming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202356486U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081046A (en) * | 2014-05-05 | 2015-11-25 | 上海宝钢高新技术零部件有限公司 | Hydraulic forming flexible sealing apparatus |
| CN106853473B (en) * | 2016-12-06 | 2019-02-22 | 柳州科瑞科技有限公司 | A kind of zigzag push top for forming high pressure in pipe |
-
2011
- 2011-11-11 CN CN2011204448856U patent/CN202356486U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081046A (en) * | 2014-05-05 | 2015-11-25 | 上海宝钢高新技术零部件有限公司 | Hydraulic forming flexible sealing apparatus |
| CN106853473B (en) * | 2016-12-06 | 2019-02-22 | 柳州科瑞科技有限公司 | A kind of zigzag push top for forming high pressure in pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20131111 |