CN205763164U - A kind of metal bellows shaped by fluid pressure is with sealing structure - Google Patents
A kind of metal bellows shaped by fluid pressure is with sealing structure Download PDFInfo
- Publication number
- CN205763164U CN205763164U CN201620451539.3U CN201620451539U CN205763164U CN 205763164 U CN205763164 U CN 205763164U CN 201620451539 U CN201620451539 U CN 201620451539U CN 205763164 U CN205763164 U CN 205763164U
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- CN
- China
- Prior art keywords
- rubber seal
- die cap
- metal bellows
- fluid pressure
- sealing
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Abstract
A kind of metal bellows shaped by fluid pressure is with sealing structure, including die cap, die cap is fixed with for the rubber seal carrying out sealing that matches with pipe mouth inner wall, the inner side of rubber seal is circumferentially arranged with the groove of annular, bracing ring it is provided with in groove, the closed cavity of annular is formed between bracing ring and bottom portion of groove, die cap is provided with waterflood path, limbers radially it is provided with on bracing ring, it is connected by connecting tube between waterflood path with limbers, by to waterflood path water filling, water flows into closed cavity through connecting tube and limbers, thus under hydraulic pressure effect, the external diameter of rubber seal becomes the sealing realizing greatly between itself and pipe mouth inner wall.Because need not rubber seal repeats handling, not only reduce the labor intensity of workman, and rubber seal can be always maintained at higher sealing property, thus ensure effectiveness and the persistency sealed, improve yield rate and the end product quality of metal bellows.
Description
Technical field
This utility model relates to metal bellows hydraulic molding technique field, and specifically a kind of metal bellows shaped by fluid pressure is with sealing structure.
Background technology
Metal bellows shaped by fluid pressure method has the advantage minimum to material surface damage, therefore widely used by metal bellows manufacturer.The operation principle of metal bellows shaped by fluid pressure method is: adjust the relative position of mould and pipe, pressurize to pipe inner chamber water filling, re-use press and axially carry out mechanical compress along pipe, make pipe once shape circumference restriction and being compressed axially of press of mould.In the forming process of metal bellows, due to pipe stress deformation, gap can be formed between pipe port and die cap, the existence in gap can cause leakage (Lou pressure of leaking), thus result in the pressure loss, the consequence that molding is failed also can be caused, it is therefore desirable to use certain seal approach to stop a leak when leaking serious.
In prior art, being to slot on die cap, place rubber seal, utilize the pressure effect of pipe inner chamber in metal bellows forming process, make rubber seal deform in groove, extrusion tube blank end sidewalls realizes radial seal.The sealing structure of this form, will load and unload rubber seal during each molding, do not only exist repetitive operation problem, increases labor intensity, and repetitive operation can affect the sealing property of rubber seal, easily causes seal failure, it is impossible to thoroughly solve leakage problem.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of metal bellows shaped by fluid pressure with sealing structure.
In order to solve above-mentioned technical problem, this utility model be the technical scheme is that a kind of metal bellows shaped by fluid pressure seals structure, including die cap, it is fixed with for the rubber seal carrying out sealing that matches with pipe mouth inner wall at die cap towards the one side in pipe, the inner side of rubber seal is circumferentially arranged with the groove of annular, bracing ring it is provided with in groove, an annular closed cavity is formed between bracing ring and bottom portion of groove, die cap is provided with the waterflood path for the pressurization of water filling in closed cavity, bracing ring is radially provided with limbers, it is connected by connecting tube between waterflood path with limbers, by to waterflood path water filling, water flows into closed cavity through connecting tube and limbers, thus under hydraulic pressure effect, the external diameter of rubber seal becomes the sealing realizing greatly between itself and pipe mouth inner wall.
Further, rubber seal and bracing ring are connected by bolt and die cap are fixing, are provided with pressure ring between the head and rubber seal of bolt, and the external diameter of pressure ring is consistent with the external diameter of rubber seal, and the internal diameter of pressure ring is consistent with the internal diameter of rubber seal.
Further, described rubber seal is the sealing ring of rectangular in cross-section, and the cross section of described groove takes the shape of the letter U.
Further, described waterflood path includes the horizontal segment be arrangeding in parallel with die cap end face and is perpendicular to the vertical section that die cap end face is arranged, horizontal segment is connected with vertical section, horizontal segment opening be located on the outer peripheral face of die cap, the opening of vertical section is connected with connecting tube.
Further, described die cap is upper mould cover or lower die cap.
Beneficial effect:
According to this utility model, rubber seal is fixed on die cap, and offer in rubber seal towards the cannelure in pipe, bracing ring is set in cannelure thus in rubber seal, forms closed cavity, during work, only water filling need to pressurize in closed cavity, the sealing needed can be realized.Such sealing structure, in the forming process of metal bellows, need not rubber seal repeats installation and removal, not only reduce the labor intensity of workman, and rubber seal can be always maintained at higher sealing property, thus ensure effectiveness and the persistency sealed, drastically increase yield rate and the end product quality of metal bellows.
With detailed description of the invention this utility model done the most concrete detailed description below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is that this utility model coordinates the schematic diagram installed with pipe.
Fig. 2 is the structural representation that this utility model is in sealing state.
In figure, 1, press platform, 2, lower die cap, 3, pipe, 4, middle diaphragm, 5, bolt, 6, upper mould cover, 7, rubber seal, 8, closed cavity, 9, the water filling pressurization mouth of water filling in pipe, 10, vertical section, 11, connecting tube, 12, bracing ring, 13, pressure ring, 14, horizontal segment, 15, the opening of horizontal segment, 16, limbers.
Detailed description of the invention
nullAs shown in FIG.，A kind of metal bellows shaped by fluid pressure is with sealing structure，Including die cap，It is fixed with for the rubber seal 7 carrying out sealing that matches with pipe mouth inner wall towards the one side in pipe 3 at die cap，The inner side of rubber seal 7 is circumferentially arranged with the groove of annular，Bracing ring 12 it is provided with in groove，An annular closed cavity 8 is formed between bracing ring 12 and bottom portion of groove，Die cap is provided with the waterflood path for the pressurization of water filling in closed cavity，Bracing ring 12 is radially provided with limbers 16，It is connected by connecting tube 11 between waterflood path with limbers 16，By to waterflood path water filling，Water flows into closed cavity 8 through connecting tube 11 and limbers 16，Thus under hydraulic pressure effect，The external diameter of rubber seal 7 becomes the sealing realizing greatly between itself and pipe mouth inner wall.
The mounting structure of mould (in this figure, mould includes upper mould cover 6, middle diaphragm 4 and lower die cap 2, and whole set of die is arranged on the upper surface of press platform 1) when also show corrugated pipe forming in figure, mould be installed as prior art, the most no longer describe in detail.
In the present embodiment, rubber seal 7 and bracing ring 12 are connected by bolt 5 and die cap are fixing.Rubber seal 7 and bracing ring 12 are fixed on die cap with the corresponding threaded holes conjunction being located on die cap by bolt 5 also cross rubber seal 7 and bracing ring 12.In actual application, rubber seal can use and any in prior art it can be made with die cap to fix the mode being connected, as long as guarantee does not affect the sealing property of rubber seal.
In order to avoid rubber seal 7 is caused local deformation by bolt 5, can also set up pressure ring 13 between the head of bolt 5 and rubber seal 7, the external diameter of pressure ring 13 is consistent with the external diameter of rubber seal, and the internal diameter of pressure ring is consistent with the internal diameter of rubber seal.
Described rubber seal 7 is the sealing ring of rectangular in cross-section, and the cross section of described groove takes the shape of the letter U.
In the present embodiment, waterflood path includes the horizontal segment 14 be arrangeding in parallel with die cap end face and is perpendicular to the vertical section 10 that die cap end face is arranged, horizontal segment 14 is connected with vertical section 10, and the opening 15 of horizontal segment is located on the outer peripheral face of die cap, and the opening of vertical section is connected with connecting tube 10.
Described die cap can be upper mould cover 6, it is also possible to be lower die cap 2.
In the present embodiment, upper mould cover 6 is provided with the water filling pressurization mouth 9 of water filling in pipe.
In Fig. 1, this utility model is in original state, in figure, has gap between rubber seal 7 and pipe mouth inner wall；Fig. 2 shows duty of the present utility model, now, in closed cavity 8 under the effect of hydraulic pressure, already at the sealing state fitted tightly between rubber seal 7 and pipe (in this figure, pipe shape becomes corrugated tube) mouth inner wall.
Use this utility model, during metal bellows shaped by fluid pressure, need not rubber seal repeats installation and removal, not only reduce the labor intensity of workman, and rubber seal can be always maintained at higher sealing property, thus ensure effectiveness and the persistency sealed, greatly increase yield rate and the end product quality of metal bellows.
The present embodiment is merely to illustrate that this utility model, and it is not intended that restriction of the present utility model.
Claims (5)
- null1. a metal bellows shaped by fluid pressure is with sealing structure，It is characterized in that: include die cap，It is fixed with for the rubber seal (7) carrying out sealing that matches with pipe mouth inner wall towards the one side in pipe (3) at die cap，The inner side of rubber seal (7) is circumferentially arranged with the groove of annular，Bracing ring (12) it is provided with in groove，An annular closed cavity (8) is formed between bracing ring (12) and bottom portion of groove，Die cap is provided with the waterflood path for the pressurization of water filling in closed cavity，Bracing ring (12) is radially provided with limbers (16)，It is connected by connecting tube (11) between waterflood path with limbers (16)，By to waterflood path water filling，Water flows into closed cavity (8) through connecting tube (11) and limbers (16)，Thus under hydraulic pressure effect，The external diameter of rubber seal (7) becomes the sealing realizing greatly between itself and pipe mouth inner wall.
- A kind of metal bellows shaped by fluid pressure the most according to claim 1 seals structure, it is characterized in that: rubber seal (7) and bracing ring (12) are connected by bolt (5) and die cap are fixing, it is provided with pressure ring (13) between the head and rubber seal (7) of bolt (5), the external diameter of pressure ring (13) is consistent with the external diameter of rubber seal, and the internal diameter of pressure ring is consistent with the internal diameter of rubber seal.
- A kind of metal bellows shaped by fluid pressure the most according to claim 1 seals structure, it is characterised in that: described rubber seal (7) is the sealing ring of rectangular in cross-section, and the cross section of described groove takes the shape of the letter U.
- A kind of metal bellows shaped by fluid pressure the most according to claim 1 seals structure, it is characterized in that: described waterflood path includes the horizontal segment (14) be arrangeding in parallel with die cap end face and is perpendicular to the vertical section (10) that die cap end face is arranged, horizontal segment is connected with vertical section, the opening (15) of horizontal segment is located on the outer peripheral face of die cap, and the opening of vertical section is connected with connecting tube (11).
- A kind of metal bellows shaped by fluid pressure the most according to claim 1 seals structure, it is characterised in that: described die cap is upper mould cover (6) or lower die cap (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451539.3U CN205763164U (en) | 2016-05-18 | 2016-05-18 | A kind of metal bellows shaped by fluid pressure is with sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451539.3U CN205763164U (en) | 2016-05-18 | 2016-05-18 | A kind of metal bellows shaped by fluid pressure is with sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205763164U true CN205763164U (en) | 2016-12-07 |
Family
ID=58119059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620451539.3U Withdrawn - After Issue CN205763164U (en) | 2016-05-18 | 2016-05-18 | A kind of metal bellows shaped by fluid pressure is with sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205763164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855341A (en) * | 2016-05-18 | 2016-08-17 | 洛阳双瑞特种装备有限公司 | Sealing structure for hydraulic molding of metal corrugated pipe |
| CN114101526A (en) * | 2021-11-09 | 2022-03-01 | 北京航空航天大学 | Multi-pass hydraulic forming method for multi-wave metal sealing ring |
-
2016
- 2016-05-18 CN CN201620451539.3U patent/CN205763164U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855341A (en) * | 2016-05-18 | 2016-08-17 | 洛阳双瑞特种装备有限公司 | Sealing structure for hydraulic molding of metal corrugated pipe |
| CN114101526A (en) * | 2021-11-09 | 2022-03-01 | 北京航空航天大学 | Multi-pass hydraulic forming method for multi-wave metal sealing ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20171013 |