CN105855341B - A kind of metal bellows shaped by fluid pressure sealing structure - Google Patents
A kind of metal bellows shaped by fluid pressure sealing structure Download PDFInfo
- Publication number
- CN105855341B CN105855341B CN201610328680.9A CN201610328680A CN105855341B CN 105855341 B CN105855341 B CN 105855341B CN 201610328680 A CN201610328680 A CN 201610328680A CN 105855341 B CN105855341 B CN 105855341B
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- CN
- China
- Prior art keywords
- rubber seal
- die cap
- metal bellows
- groove
- fluid pressure
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D15/00—Corrugating tubes
- B21D15/04—Corrugating tubes transversely, e.g. helically
- B21D15/10—Corrugating tubes transversely, e.g. helically by applying fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Diaphragms And Bellows (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
A kind of metal bellows shaped by fluid pressure sealing structure, including die cap, it is fixed with die cap for being engaged the sealed rubber seal of progress with pipe mouth inner wall, groove of the inner side of rubber seal circumferentially arranged with annular, bracing ring is provided with groove, the closed cavity of annular is formed between bracing ring and bottom portion of groove, die cap is provided with waterflood path, limbers is radially provided with bracing ring, it is connected between waterflood path and limbers by connecting tube, by to waterflood path water filling, water flows into closed cavity by connecting tube and limbers, so as under hydraulic pressure effect, the external diameter of rubber seal becomes the sealing for realizing it greatly between pipe mouth inner wall.Because need not carry out repeating handling to rubber seal, not only reduce the labor intensity of workman, and rubber seal can be always maintained at higher sealing property, so as to ensure sealed validity and persistence, the yield rate and final product quality of metal bellows are improved.
Description
Technical field
The present invention relates to metal bellows hydraulic molding technique field, specifically a kind of metal bellows shaped by fluid pressure
Use sealing structure.
Background technology
Metal bellows shaped by fluid pressure method has the advantages that to damage minimum to material surface, therefore is produced by metal bellows
Producer is widely used.The operation principle of metal bellows shaped by fluid pressure method is：Adjust the relative position of mould and pipe, Xiang Guan
The water filling pressurization of base inner chamber, reuses press and axially carries out mechanical compress along pipe, makes pipe in the circumferential limitation of mould and press
Be compressed axially and shape next time.In the forming process of metal bellows, due to pipe stress deformation, pipe port and die cap
Between can form gap, the presence in gap can cause leakage（Leak leakage pressure）, thus build-up of pressure loss, can also when leaking serious
The consequence for causing shaping to fail, it is therefore desirable to stopped a leak using certain seal approach.
In the prior art, it is to be slotted on die cap, rubber seal is placed in groove, using in metal bellows forming process
The pressure effect of pipe inner chamber, deforms rubber seal, extrusion tube blank end sidewalls realize radial seal.This form
Sealing structure, will load and unload rubber seal during shaping every time, not only exist the problem of repeating, and increase labor intensity, and again
Multiple operation can influence the sealing property of rubber seal, easily cause seal failure, it is impossible to thoroughly solve leakage problem.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of metal bellows shaped by fluid pressure sealing structure.
The technical scheme that is in order to solve the above-mentioned technical problem used of the present invention is：A kind of metal bellows shaped by fluid pressure is used
Sealing structure, including die cap, are fixed with for being engaged progress with pipe mouth inner wall in die cap towards the one side in pipe
Sealed rubber seal, the inner side of rubber seal is circumferentially arranged with the groove of annular, and groove is interior to be provided with bracing ring, in support
An annular closed cavity is formed between circle and bottom portion of groove, being provided with die cap is used for what the water filling into closed cavity was pressurizeed
Waterflood path, limbers is radially provided with bracing ring, is connected between waterflood path and limbers by connecting tube, passed through
To waterflood path water filling, water flows into closed cavity by connecting tube and limbers, so that under hydraulic pressure effect, rubber seal
External diameter becomes the sealing for realizing it greatly between pipe mouth inner wall.
Further, rubber seal and bracing ring are fixedly connected by bolt with die cap, in the head of bolt and rubber
Pressure ring is provided between sealing ring, the external diameter of pressure ring is consistent with the external diameter of rubber seal, the internal diameter and rubber seal of pressure ring
Internal diameter it is consistent.
Further, described rubber seal is the sealing ring of rectangular in cross-section, and the section of the groove takes the shape of the letter U.
Further, described waterflood path includes the horizontal segment being be arranged in parallel with die cap end face and perpendicular to die cap end face
The vertical section of setting, horizontal segment is connected with vertical section, the opening of horizontal segment is located on the outer peripheral face of die cap, and vertical section is opened
Mouth is connected with connecting tube.
Further, described die cap is upper mould cover or lower die cap.
Beneficial effect：
According to the present invention, rubber seal is fixed on die cap, and opened up in rubber seal towards in pipe
Annular groove, sets bracing ring so as to form closed cavity in rubber seal in annular groove, only need to be to confined air during work
Intracavitary water filling is pressurizeed, you can realize the sealing needed.Such sealing structure, in the forming process of metal bellows, is not required to
Rubber seal is carried out repeating installation and removal, not only reduce the labor intensity of workman, and rubber seal can be with
Higher sealing property is always maintained at, so as to ensure sealed validity and persistence, metal bellows is drastically increased
Yield rate and final product quality.
Further specific detailed description is done to the present invention with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Fig. 1 coordinates the schematic diagram installed for the present invention with pipe.
Fig. 2 is in the structural representation of sealing state for the present invention.
In figure, 1, press platform, 2, lower die cap, 3, pipe, 4, middle diaphragm, 5, bolt, 6, upper mould cover, 7, rubber seal
Circle, 8, closed cavity, 9, into pipe water filling water filling pressurization mouth, 10, vertical section, 11, connecting tube, 12, bracing ring, 13, pressure
Ring, 14, horizontal segment, 15, the opening of horizontal segment, 16, limbers.
Embodiment
As shown in FIG., a kind of metal bellows shaped by fluid pressure sealing structure, including die cap, in die cap towards pipe 3
Interior one side is fixed with for being engaged the sealed rubber seal 7 of progress with pipe mouth inner wall, rubber seal 7 it is interior
Side is circumferentially arranged with the groove of annular, and groove is interior to be provided with bracing ring 12, and a ring is formed between bracing ring 12 and bottom portion of groove
The closed cavity 8 of shape, is provided with the waterflood path for being used for that water filling to be pressurizeed into closed cavity, along footpath on bracing ring 12 on die cap
To provided with limbers 16, it is connected between waterflood path and limbers 16 by connecting tube 11, by waterflood path water filling, water
Closed cavity 8 is flowed into by connecting tube 11 and limbers 16, so that under hydraulic pressure effect, the external diameter of rubber seal 7 becomes big real
Show its sealing between pipe mouth inner wall.
Mould when corrugated pipe forming is also show in figure（Mould includes upper mould cover 6, middle diaphragm 4 and lower die cap in this figure
2, whole set of die is arranged on the upper surface of press platform 1）Mounting structure, mould is installed as prior art, herein no longer
It is described in detail.
In the present embodiment, rubber seal 7 and bracing ring 12 are fixedly connected by bolt 5 with die cap.Bolt 5 also cross
Rubber seal 7 and bracing ring 12 close with the corresponding threaded holes being located on die cap and are fixed on rubber seal 7 and bracing ring 12
On die cap.In practical application, rubber seal can using in the prior art it is any it can be made to be fixedly connected with die cap by the way of,
As long as guarantee does not influence the sealing property of rubber seal.
In order to avoid bolt 5 causes local deformation to rubber seal 7, can the head of bolt 5 and rubber seal 7 it
Between also set up pressure ring 13, the external diameter of pressure ring 13 is consistent with the external diameter of rubber seal, the internal diameter of pressure ring and rubber seal
Internal diameter is consistent.
Described rubber seal 7 is the sealing ring of rectangular in cross-section, and the section of the groove takes the shape of the letter U.
In the present embodiment, waterflood path includes the horizontal segment 14 being be arranged in parallel with die cap end face and set perpendicular to die cap end face
The vertical section 10 put, 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, vertical section
Opening be connected with connecting tube 11.
Described die cap can be upper mould cover 6 or lower die cap 2.
In the present embodiment, the water filling pressurization mouth 9 provided with the water filling into pipe on upper mould cover 6.
In Fig. 1, the present invention is in original state, figure, has gap between rubber seal 7 and pipe mouth inner wall；
Fig. 2 shows the working condition of the present invention, now, in closed cavity 8 in the presence of hydraulic pressure, rubber seal 7 and pipe（This
Shape is changed into bellows to pipe in figure）In the sealing state being brought into close contact between mouth inner wall.
Using the present invention, during metal bellows shaped by fluid pressure, it is not necessary to rubber seal is carried out to repeat peace
Assembly and disassembly, not only reduce the labor intensity of workman, and rubber seal can be always maintained at higher sealing property, from
And ensure sealed validity and persistence, greatly increase the yield rate and final product quality of metal bellows.
The present embodiment is intended to be merely illustrative of the present, and it does not constitute limitation of the invention.
Claims (5)
1. a kind of metal bellows shaped by fluid pressure sealing structure, it is characterised in that：Including die cap, in die cap towards pipe（3）
Interior one side is fixed with for being engaged the sealed rubber seal of progress with pipe mouth inner wall（7）, rubber seal（7）
Inner side circumferentially arranged with the groove of annular, bracing ring is provided with groove（12）, in bracing ring（12）The shape between bottom portion of groove
Into an annular closed cavity（8）, the waterflood path for being used for that water filling to be pressurizeed into closed cavity is provided with die cap, in support
Circle（12）On radially be provided with limbers（16）, waterflood path and limbers（16）Between pass through connecting tube（11）It is connected, leads to
Cross to waterflood path water filling, water passes through connecting tube（11）And limbers（16）Flow into closed cavity（8）, so that in hydraulic pressure effect
Under, rubber seal（7）External diameter become and realize its sealing between pipe mouth inner wall greatly.
2. a kind of metal bellows shaped by fluid pressure sealing structure according to claim 1, it is characterised in that：Rubber seal
Circle（7）And bracing ring（12）Pass through bolt（5）It is fixedly connected with die cap, in bolt（5）Head and rubber seal（7）Between
Provided with pressure ring（13）, pressure ring（13）External diameter it is consistent with the external diameter of rubber seal, the internal diameter of pressure ring and rubber seal
Internal diameter is consistent.
3. a kind of metal bellows shaped by fluid pressure sealing structure according to claim 1, it is characterised in that：Described rubber
Glue sealing ring（7）For the sealing ring of rectangular in cross-section, the section of the groove takes the shape of the letter U.
4. a kind of metal bellows shaped by fluid pressure sealing structure according to claim 1, it is characterised in that：Described note
Aquaporin includes the horizontal segment being be arranged in parallel with die cap end face（14）With the vertical section set perpendicular to die cap end face（10）, level
Section is connected with vertical section, the opening of horizontal segment（15）It is located on the outer peripheral face of die cap, the opening and connecting tube of vertical section
（11）It is connected.
5. a kind of metal bellows shaped by fluid pressure sealing structure according to claim 1, it is characterised in that：Described mould
Cover as upper mould cover（6）Or lower die cap（2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328680.9A CN105855341B (en) | 2016-05-18 | 2016-05-18 | A kind of metal bellows shaped by fluid pressure sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328680.9A CN105855341B (en) | 2016-05-18 | 2016-05-18 | A kind of metal bellows shaped by fluid pressure sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105855341A CN105855341A (en) | 2016-08-17 |
| CN105855341B true CN105855341B (en) | 2017-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610328680.9A Active CN105855341B (en) | 2016-05-18 | 2016-05-18 | A kind of metal bellows shaped by fluid pressure sealing structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN105855341B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020019999A1 (en) * | 2018-07-24 | 2020-01-30 | 衡水威达橡塑有限公司 | Sealing ring for pressure testing and sealing of cast pipe, and tooling assembly |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1222355A1 (en) * | 1984-10-10 | 1986-04-07 | Предприятие П/Я Р-6378 | Arrangement for manufacturing bellows |
| CN88210280U (en) * | 1988-03-14 | 1988-11-02 | 航空部黎明发动机制造公司 | Bellows forming seal set |
| JPH10277660A (en) * | 1997-04-11 | 1998-10-20 | Hitachi Ltd | Method and device for hydrostatic forming, manufacture of bellows, and tubular structure |
| CN2733114Y (en) * | 2004-06-07 | 2005-10-12 | 田玉春 | Hydraulic-formed bellows sealing arrangement |
| CN101352745B (en) * | 2008-09-11 | 2010-08-25 | 大连合生科技开发有限公司 | Composited tube hydraulic forming device |
| CN205763164U (en) * | 2016-05-18 | 2016-12-07 | 洛阳双瑞特种装备有限公司 | A kind of metal bellows shaped by fluid pressure is with sealing structure |
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2016
- 2016-05-18 CN CN201610328680.9A patent/CN105855341B/en active Active
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| Publication number | Publication date |
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| CN105855341A (en) | 2016-08-17 |
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Address after: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |
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