CN203791437U - Internal high pressure forming pipe end face seal plug - Google Patents
Internal high pressure forming pipe end face seal plug Download PDFInfo
- Publication number
- CN203791437U CN203791437U CN201420225275.0U CN201420225275U CN203791437U CN 203791437 U CN203791437 U CN 203791437U CN 201420225275 U CN201420225275 U CN 201420225275U CN 203791437 U CN203791437 U CN 203791437U
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- Prior art keywords
- shutoff
- plugging
- level
- pipe fitting
- face
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006052 feed supplement Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The utility model discloses an internal high pressure forming pipe end face seal plug which comprises a seal plug head, cushion blocks and seal rings. The seal plug head comprises a guide surface, two or more plugging steps and plugging step extension sections. The external diameter of the plugging steps is slightly larger than the inside diameter of a pipe fitting mold cavity. In the forming process, a convex point of a pipe fitting performing arc end face reaches a plugging section at first, when plugging is completed until forming is ended, the concave part of the pipe fitting performing arc end face deforms and reaches the maximum plugging step surface, and the pipe fitting performing arc end face gradually reaches a plugging limit. Three kinds of thicknesses of the cushion block are provided. Annular grooves are formed in the end faces of the cushion blocks, and the seal rings are installed in the annular grooves. When pressure is leaked due to abrasion of the plugging steps, the second-level plugging step is machined and maintained to form a first-level step, the third-level plugging step is machined and maintained to form a second-level step, and the three-level plugging step extension section is machined and maintained to form a three-level plugging step; the total length is reduced after maintenance and machining and is compensated through the cushion blocks of different thicknesses and specifications, and the seal plug can be repeatedly used.
Description
Technical field
The utility model belongs to the moulding of pipe fitting inner high voltage and technical field of sealing technology, relates to the shutoff of a kind of inner high voltage formed pipe end face, is specially adapted to tubing through the inner high voltage moulding of preformed pipe fitting end face camber part.
Background technology
Internal high pressure forming technique refers to by tubular blank is applied to axial compressive force and internal high pressure simultaneously and makes it that plastic deformation occur, and the process of finally pasting contour forming, belong to extraordinary plastic processing method, there are saving raw material, formed thereby pts wt is light, processing passage is few, Product Precision is high, number of molds is few, production cost is low, part strength good rigidity, weight of equipment is light, the advantage such as easy and simple to handle, in the fields such as Aero-Space and auto manufacturing, be used widely, product mainly comprises aircraft eccentric shaft, automobile camshaft, blast pipe, engine bracker, and civilian Kitchen hygiene apparatus etc.
In interior high forming process, the movable sealing between drift and pipe is most important, is directly connected to quality and the precision of the success or failure of forming process and the rear product that is shaped.
The wedge shape drift integrative-structure that is sealed into that internal high pressure forming is commonly used in producing at present seals, and by wedge shape drift being pressed into pipe, forces the generation plastic deformation of pipe end to reach sealing effectiveness.In Internal High Pressure Forming, often relate to the axial feed of material to guarantee the stable of deformation process, and it is very serious in this rigid seal mode motion process, the wearing and tearing of die cavity inner surface, shutoff to be worn and torn, service life is short; After shutoff wearing and tearing, can not keep in repair and reuse, cause production cost to significantly improve; Formation of tubes pressurize is not enough, and especially for through preformed and the part of pipe fitting end face camber, internal high pressure forming plugging effect is not good, and internal high pressure forming part percent defective is high.
Summary of the invention
The utility model discloses the shutoff of a kind of inner high voltage formed pipe end face, to solve shutoff serious wear in prior art, service life is short; After shutoff wearing and tearing, can not keep in repair and reuse; For through preformed and the part of pipe fitting end face camber, the problem such as internal high pressure forming plugging effect is not good, internal high pressure forming part percent defective height.
The utility model comprises block head; Block head comprises spigot surface and is more than or equal to the shutoff step of two-stage; The overall diameter of shutoff step is slightly larger than pipe fitting die cavity internal diameter.In forming process, first pipe fitting preformed curved end salient point reaches shutoff cross section, when completing shutoff until moulding finish, the deformation of pipe fitting preformed curved end recess reaches maximum shutoff step surface, pipe fitting preformed curved end reaches the shutoff limit gradually, and in the process of guaranteeing to increase at inside pipe fitting pressure, occluding member can not occur because of shutoff deficiency and the phenomenon of pressure leakages.
Block head surface has wearing and tearing coating.
Three grades, the utility model shutoff step; Comprise first order shutoff step, second level shutoff step, third level shutoff step; Third level shutoff length of bench is greater than second level shutoff length of bench, is greater than first order shutoff length of bench.First be that first order step enters pipe fitting die cavity, reach one-level shutoff; Because shutoff stepped diameters is slightly larger than pipe fitting internal diameter, there is swollen mouthful of distortion of trace in pipe fitting end face, reaches the effect of sealing; Along with block head moves on, second level shutoff step enters pipe fitting die cavity and reaches secondary shutoff, and block head moves on, and third level shutoff step enters pipe fitting die cavity and reaches three grades of shutoff; When completing shutoff, until moulding finishes, pipe fitting preformed curved end and three grades of each step end face sealings of shutoff step, realize three grades of shutoff; Shutoff stepped diameters increases successively, and plugging effect also improves gradually.Because inner high voltage forming part much need to pass through preformed before moulding, preformed pipe fitting is through the feed supplement of material, tube end material is to tubing internal flow, cause end surfaces camber structure, consider that tube end face is the factor of arc, third level shutoff step is lengthened, increased the coverage of three grades of shutoff, guarantee that third level shutoff step reaches result of use when the contact of pipe fitting preformed curved end peak stops cross section, when shutoff finishes, pipe fitting preformed arcwall face concave point part has reached third level shutoff step, guarantee in inside pipe fitting pressure increase process, can not occur because of shutoff deficiency and pressure leakages.
The utility model also comprises cushion block; Block head comprises third level shutoff step extension section; When shutoff step, because wear and tear while there is pressure leakages, can keep in repair shutoff processing; Second level shutoff step processing maintenance is become to first order step, third level shutoff step processing maintenance is become to second level step, in the processing of third level shutoff step extension section, keep in repair out third level shutoff step; After maintenance and fabrication, total length reduces to be compensated by different-thickness specification cushion block, realizes block head recycling; Different according to block head wear extent, be equipped with different-thickness cushion block, thereby increase block head service life.
Three kinds of pad thickness, the block head of corresponding different loss states.
The utility model also comprises sealing ring, and cushion block end face has ring groove, and sealing ring is arranged in ring groove, reaches sealing effectiveness, prevents pressure leakages.
During shutoff, the utility model is fastenedly connected on mould shutoff oil cylinder, by shutoff oil cylinder, is driven with respect to pipe fitting rectilinear motion.Block head accurately inserts pipe internal diameter through spigot surface guiding, through three grades of shutoff steps, carry out step by step shutoff again, pipe fitting is after contacting with shutoff step, because the overall diameter of shutoff step is slightly larger than pipe fitting die cavity internal diameter, along with shutoff step enters pipe fitting die cavity inside step by step, it is more and more obvious to there is swollen mouthful of distortion in pipe end, and pipe end is larger to the parcel power of block head, plugging effect is more obvious, reaches good sealing effectiveness.
Good effect of the present utility model is: plugging effect is good; Wearability improves, and the life-span improves; After wearing and tearing, can keep in repair and reuse, cost is low.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is portion of the utility model structural traps end office (EO) enlarged diagram;
Fig. 3 is the utility model cushion block structure schematic diagram;
In figure: 1 block head, 2 cushion blocks, 1a spigot surface, 1b first order shutoff step, 1c second level shutoff step, 1d third level shutoff step, 1e stop cross section, 1f third level shutoff step extension section.
The specific embodiment
Below in conjunction with accompanying drawing, describe an embodiment of the present utility model in detail.
Embodiment of the utility model as shown in Figure 1, Figure 2, Figure 3 shows, comprises block head 1, cushion block 2, sealing ring; Block head 1 comprises spigot surface 1a, first order shutoff step 1b, second level shutoff step 1c, third level shutoff step 1d, a third level shutoff step extension section 1f; The overall diameter of shutoff step is slightly larger than pipe fitting die cavity internal diameter, and block head surface has wearing and tearing coating; Third level shutoff step 1d length is greater than second level shutoff step 1c length, is greater than first order shutoff step 1b length.When shutoff step, because wear and tear while there is pressure leakages, can keep in repair shutoff processing; Second level shutoff step 1c processing maintenance is become to first order step 1b, third level shutoff step 1d processing maintenance is become to second level step 1c, in third level shutoff step extension section 1f processing, keep in repair out third level shutoff step 1 d; After maintenance and fabrication, total length reduces by 2 compensation of different-thickness specification cushion block, three kinds of cushion block 2 thickness, and the block head 1 of corresponding different loss states, realizes block head 1 recycling; Increase by 1 service life of block head; Cushion block 2 end faces have ring groove, and sealing ring is arranged in ring groove, reaches sealing effectiveness, prevents pressure leakages.
During shutoff, the utility model is fastenedly connected on mould shutoff oil cylinder, by shutoff oil cylinder, is driven with respect to pipe fitting rectilinear motion.Block head 1 accurately inserts pipe internal diameter through spigot surface 1a guiding, through three grades of shutoff steps, carry out step by step shutoff again, pipe fitting is after contacting with shutoff step, because the overall diameter of shutoff step is slightly larger than pipe fitting die cavity internal diameter, along with shutoff step enters pipe fitting die cavity inside step by step, it is more and more obvious to there is swollen mouthful of distortion in pipe end, and pipe end is larger to the parcel power of block head, plugging effect is more obvious, reaches good sealing effectiveness.
Claims (5)
1. an inner high voltage formed pipe end face shutoff, is characterized in that: comprise block head; Block head comprises spigot surface and is more than or equal to the shutoff step of two-stage; The overall diameter of shutoff step is greater than pipe fitting die cavity internal diameter.
2. a kind of inner high voltage formed pipe end face according to claim 1 shutoff, is characterized in that: also comprise cushion block; Block head comprises shutoff step extension section; Three kinds of pad thickness.
3. a kind of inner high voltage formed pipe end face according to claim 1 shutoff, is characterized in that: three grades, shutoff step; Comprise first order shutoff step, second level shutoff step, third level shutoff step; Third level shutoff length of bench is greater than second level shutoff length of bench, is greater than first order shutoff length of bench; Shutoff stepped diameters increases successively.
4. a kind of inner high voltage formed pipe end face according to claim 1 shutoff, is characterized in that: also comprise sealing ring, cushion block end face has ring groove, and sealing ring is arranged in ring groove.
5. a kind of inner high voltage formed pipe end face according to claim 1 shutoff, is characterized in that: block head surface has wearing and tearing coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225275.0U CN203791437U (en) | 2014-05-05 | 2014-05-05 | Internal high pressure forming pipe end face seal plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225275.0U CN203791437U (en) | 2014-05-05 | 2014-05-05 | Internal high pressure forming pipe end face seal plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203791437U true CN203791437U (en) | 2014-08-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420225275.0U Expired - Lifetime CN203791437U (en) | 2014-05-05 | 2014-05-05 | Internal high pressure forming pipe end face seal plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203791437U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307955A (en) * | 2014-10-14 | 2015-01-28 | 宁波思明汽车科技有限公司 | Punching head for internal high-pressure forming |
| CN104307957A (en) * | 2014-10-14 | 2015-01-28 | 宁波思明汽车科技有限公司 | Punch pin for internal high pressure forming |
| CN105179754A (en) * | 2015-10-23 | 2015-12-23 | 浙江摩多巴克斯科技股份有限公司 | Integrated plug for internal high pressure |
| CN106311860A (en) * | 2015-06-23 | 2017-01-11 | 宝山钢铁股份有限公司 | Hydraulic forming sealing method based on end surface reaction |
| CN106363069A (en) * | 2016-08-29 | 2017-02-01 | 天津市天锻压力机有限公司 | Inner high-pressure forming push head for machining automobile chassis part and machining technology |
-
2014
- 2014-05-05 CN CN201420225275.0U patent/CN203791437U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307955A (en) * | 2014-10-14 | 2015-01-28 | 宁波思明汽车科技有限公司 | Punching head for internal high-pressure forming |
| CN104307957A (en) * | 2014-10-14 | 2015-01-28 | 宁波思明汽车科技有限公司 | Punch pin for internal high pressure forming |
| CN106311860A (en) * | 2015-06-23 | 2017-01-11 | 宝山钢铁股份有限公司 | Hydraulic forming sealing method based on end surface reaction |
| CN106311860B (en) * | 2015-06-23 | 2018-12-07 | 宝山钢铁股份有限公司 | Hydroforming encapsulating method based on end face counter-force |
| CN105179754A (en) * | 2015-10-23 | 2015-12-23 | 浙江摩多巴克斯科技股份有限公司 | Integrated plug for internal high pressure |
| CN106363069A (en) * | 2016-08-29 | 2017-02-01 | 天津市天锻压力机有限公司 | Inner high-pressure forming push head for machining automobile chassis part and machining technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |
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| CX01 | Expiry of patent term |