CN106853473B - A kind of zigzag push top for forming high pressure in pipe - Google Patents
A kind of zigzag push top for forming high pressure in pipe Download PDFInfo
- Publication number
- CN106853473B CN106853473B CN201611108586.9A CN201611108586A CN106853473B CN 106853473 B CN106853473 B CN 106853473B CN 201611108586 A CN201611108586 A CN 201611108586A CN 106853473 B CN106853473 B CN 106853473B
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- diameter
- push top
- pipe
- head
- zigzag
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- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/043—Means for controlling the axial pusher
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A kind of zigzag push top for forming high pressure in pipe, including main body of having a haircut, push top body front end is zigzag seal head, including correcting head and positioned at the subsequent zigzag seal section of correcting, the correcting head is the cylindrical body that diameter is less than pipe internal diameter, and front end sets rounded corner；The zigzag seal section includes that N level length is identical, the diameter circular bosses that equal difference increases step by step, chopped-off head circular bosses diameter is greater than correcting head cylinder diameter, final stage circular bosses diameter is less than push top main diameter, and first, last circular bosses outer diameter forms 15 °~20 ° of gradient；The numerical value of above-mentioned N is the arbitrary integer between 3~5.The push top and tubing end sealing are good, it can prevent the stuck phenomenon of correcting section, generation radial force under the action of thrust is avoided to lead to pipe end radial dilatation, and it is stuck in mold cavity phenomenon, so that charging feed supplement is more smooth, more evenly, conducive to the forming of pipe.
Description
Technical field
The present invention relates to a kind of high-pressure forming molds more particularly to a kind of zigzag for forming high pressure in pipe to push away
Head.
Background technique
While forming high pressure in pipe is by pressurizeing to tubing internal filled liquid, the axial side-thrust that applies carries out feed supplement,
It forces tube billet to fit to mold cavity under the pressure effect of pressure medium, realizes a kind of technique of pipe forming, pipe
The pressure of material internal filled liquid pressurization is generally up to 100MPa-400MPa, and most formation of parts need to also be protected under its high pressure conditions
The state of pressure keeping for holding a period of time can be only achieved preferable forming effect, so end sealing structure quality is for internal high pressure forming
Technique is most important, and can directly influence superelevation pressure condition realize, so that can influence tubing part forming reach expected
Effect.
Traditional end sealing uses the front end face by both ends push top main body to be processed into circular conical surface, and circular conical surface is in responsive to axial force
It is pushed down into tube end face and realizes sealing, using such sealing structure, have the following problems:
1. often resulting in pipe feeding resistance during having a haircut main body indentation and increasing or be stuck in mold cavity, make
Mold or push top abrasion, deformed damaged, seriously affect the reliability of mold, the service life of push top and work；
2. easily causing the radial dilatation of nozzle using such end sealing structure, to increase the difficulty of pipe feed supplement, lead
Tube wall is thinning when causing to shape or ruptures, and situation serious person will will lead to push top and pipe fitting is directly stuck in mold cavity.
3. sealing structure disclosed in Chinese patent CN101011715, first is that it is be easy to cause bulging at the pilot hole of both ends or so,
Second is that need to be additionally arranged using such sealing structure " with type chamber ", the push top structure of " pilot hole ", structure is complicated for push top, manufacture
Craftsmanship is poor, and manufacturing cost is high, and rubber is softer, since internal pressure is big, is very easy to abrasion, it is often necessary to replace, not only
Increase cost, and wastes time.
4. sealing structure disclosed in Chinese patent CN202097262U is again provided with tapered sealing surface, though it is also equipped with
Thrust platform, but have a haircut under big axial thrust effect, the pipe material that pipe end is contacted with push top thrust platform, which is easy to happen, to be collapsed,
At this moment due to the presence in conical surface seal face, continue the radial dilatation that equally will cause nozzle during feeding in push top, increase
The difficulty of pipe feed supplement, tube wall is thinning when causing to shape or ruptures；When the processing of pipe end conical surface heavy platform is there are when mismachining tolerance, due to
Pipe end conical surface heavy platform depth is too deep, is easy to appear nozzle radial dilatation and pipe end heavy platform depth is excessively latent and leads to conical surface seal occur
Face seals bad situation.
Summary of the invention
Technical problem solved by the present invention is for above-mentioned existing structure there are the shortcomings that, it is simple to provide a kind of structure, system
Make conveniently, securely and reliably, can effectively eliminate pipe port expansion and it is stuck in mold cavity for forming high pressure in pipe
Zigzag push top.
The technical solution adopted by the present invention is that: a kind of zigzag push top for forming high pressure in pipe, including push top master
Body, the push top body front end are zigzag seal head, including correcting head and zigzag seal section, and the correcting head is that diameter is small
In the cylindrical body of pipe internal diameter, front end sets rounded corner；The rear end of correcting head cylindrical body is zigzag seal section, the zigzag
Seal section includes that N level length is identical, the diameter circular bosses that equal difference increases step by step, and chopped-off head circular bosses diameter is greater than correcting head cylindrical body
Diameter, final stage circular bosses diameter are less than push top main diameter, and first, last circular bosses outer diameter forms 15 °~20 ° of gradient；It is described to lead
The diameter of positive head is 0.05~0.10mm smaller than pipe internal diameter, and segment length's value of correcting head is not less than 2mm, is not more than 10mm；
The numerical value of above-mentioned N is the arbitrary integer between 3~5.
Its further technical solution is: each circular bosses of zigzag seal section are formed to hang down with push top main body axial line
Straight small thrust platform constitutes a big thrust platform vertical with push top axial line between final stage circular bosses and push top main body excircle.
Due to taking above technical scheme, a kind of zigzag push top for forming high pressure in pipe of the present invention has such as
It is lower the utility model has the advantages that
1. correcting head is that front end sets rounded corner 111 since push top body front end is zigzag seal head, be conducive to guiding tube
Base enters push top correcting section, prevents traditional structure from the stuck phenomenon of correcting section occur because push top manufacture verticality is bad；
Correcting section is the cylindrical surface of slightly smaller than pipe internal diameter, it can be ensured that axial side-thrust stepless action in two pipe end of tubing,
Enhance the leakproofness of toothed segment simultaneously；The diameter of the correcting section of this push top is 0.05~0.10mm smaller than pipe internal diameter, and segment length 2~
10mm, segment length's value are about the 10% of pipe outer diameter but are not less than 2mm, are not more than 10mm.
2. zigzag seal section is that multiple lengths are identical, the diameter circular bosses that equal difference increases step by step, multistage circular bosses it is oblique
Degree is between 15 °~20 °, to squeeze to form multi-turn rigidity Contact Seal ring with the pipe end conical surface, when push top pushing away in hydraulic cylinder
Under power effect when axial extruded tube end, the circular bosses in push top toothed segment form broached-tooth design and the generation of the pipe end conical surface is axial crowded
Pressure, the scene-affinity of circular bosses, which is under the action of thrust, tightly stings the tight pipe end conical surface, is plastically deformed the pipe end conical surface more
Enclose rigidity Contact Seal ring；Simultaneously because foring multi-turn in the plastic deformation that the pipe end conical surface squeezed with sawtooth locally generates
Small thrust platform can produce the uniform axial force of multi-turn, so that feed supplement is more uniform；Avoid the continuous effect in thrust
Lower generation radial force and lead to pipe end radial dilatation, to effectively eliminate pipe port expansion and stuck in mold cavity phenomenon,
So that charging feed supplement is more smooth, conducive to the forming of pipe.
3. when zigzag seal section generates axial thrust deficiency, big thrust platform can press tubing pipe end to the greatest extent,
Making up axial supplement thrust ensures the smooth progress of feed supplement energy, and forming thrust sealing ring enhances leakproofness.
The skill having a haircut with reference to the accompanying drawings and examples to a kind of zigzag for forming high pressure in pipe of the present invention
Art feature is further described.
Detailed description of the invention
Fig. 1 is zigzag of the present invention sealing push top structural schematic diagram；
Fig. 2 is that status diagram is installed and used in zigzag of the present invention sealing push top；
Fig. 3 is the portion the A enlarged drawing of Fig. 2；
Fig. 4, Fig. 5 are schematic diagram of directly having a haircut disclosed in prior art (notification number is CN202097262U patent).
In figure:
1-push top main body, 11-correcting heads, 111-rounded corners, 12-small thrust platforms, 13-big thrust platforms, 2-upper molds,
3-pipes, 4-lower dies.
Specific embodiment
As shown in Fig. 1, a kind of zigzag push top structure for forming high pressure in pipe, including push top main body 1, it is described
Push top body front end is zigzag seal head, including correcting head 11 and zigzag seal section, and the correcting head is that diameter is less than pipe
The cylindrical body of base internal diameter, push top front end set rounded corner 111；The rear end of correcting head cylindrical body is zigzag seal section, the sawtooth
Shape seal section includes that 4 level lengths are identical, (the identical circular bosses of the length refer to boss to the diameter circular bosses that equal difference increases step by step
The axial length of platform is identical), chopped-off head circular bosses diameter is greater than correcting head cylinder diameter, and final stage circular bosses diameter is less than push top master
Body diameter, first, last circular bosses outer diameter form 15 °~20 ° of gradient；The diameter of the correcting head is smaller than pipe internal diameter by 0.05~
0.10mm, segment length's value of correcting head is the 10% of pipe outer diameter but is not less than 2mm, is not more than 10mm.
The each circular bosses of zigzag seal section form the small thrust platform 12 vertical with push top main body axial line, this implementation
Totally 4 grades of circular bosses form 4 small thrust platform to example altogether, and wherein final stage (the 4th grade) circular bosses and push top main body excircle constitute one
Big thrust platform 13.
Transformation as above-described embodiment: length included by zigzag seal section is identical, the diameter circle that equal difference increases step by step
The series of boss: the numerical value of N can be the arbitrary integer between 3~5.
Claims (2)
1. a kind of zigzag for forming high pressure in pipe is had a haircut, including push top main body (1), the push top body front end is saw
Tooth form seal head, including correcting head (11) and zigzag seal section, it is characterised in that: the correcting head is that diameter is less than in pipe
The cylindrical body of diameter, front end set rounded corner (111)；The rear end of correcting head cylindrical body is zigzag seal section, and the zigzag is close
Envelope section includes that N level length is identical, the diameter circular bosses that equal difference increases step by step, and it is straight that chopped-off head circular bosses diameter is greater than correcting head cylindrical body
Diameter, final stage circular bosses diameter are less than push top main diameter, and first, last circular bosses outer diameter forms 15 °~20 ° of gradient；The correcting
The diameter of head is 0.05~0.10mm smaller than pipe internal diameter, and segment length's value of correcting head is not less than 2mm, is not more than 10mm；
The numerical value of above-mentioned N is the arbitrary integer between 3~5.
2. a kind of zigzag for forming high pressure in pipe as described in claim 1 is had a haircut, it is characterised in that: the sawtooth
The each circular bosses of shape seal section form the small thrust platform (12) vertical with push top main body axial line；Final stage circular bosses and push top main body
A big thrust platform (13) vertical with push top axial line is constituted between excircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611108586.9A CN106853473B (en) | 2016-12-06 | 2016-12-06 | A kind of zigzag push top for forming high pressure in pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611108586.9A CN106853473B (en) | 2016-12-06 | 2016-12-06 | A kind of zigzag push top for forming high pressure in pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106853473A CN106853473A (en) | 2017-06-16 |
| CN106853473B true CN106853473B (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611108586.9A Active CN106853473B (en) | 2016-12-06 | 2016-12-06 | A kind of zigzag push top for forming high pressure in pipe |
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| CN (1) | CN106853473B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014417B (en) * | 2019-12-26 | 2021-05-28 | 哈尔滨工大海卓智能成形科技有限公司 | Flanging type pipe liquid filling forming sealing device and method |
| CN114682668B (en) * | 2022-03-31 | 2023-01-03 | 大连理工大学 | Pipe hot fluid high-pressure forming sealing device and method in vacuum environment |
| CN115255107A (en) * | 2022-07-05 | 2022-11-01 | 保隆(安徽)汽车配件有限公司 | Hydraulic forming sealing head and design method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092383U (en) * | 1991-03-23 | 1992-01-08 | 苏继民 | Double cup type self-seal and hydraulic pressure casing swage |
| DE4309680A1 (en) * | 1993-03-25 | 1994-09-29 | Huber & Bauer Gmbh | Apparatus for the internal high-pressure forming of a tubular blank |
| JP3648653B2 (en) * | 1996-08-30 | 2005-05-18 | カルソニックカンセイ株式会社 | Nozzle for hydraulic forming |
| CN200951446Y (en) * | 2006-10-11 | 2007-09-26 | 中国科学院金属研究所 | High pressure formation end sealing for pipes |
| CN201461590U (en) * | 2009-06-22 | 2010-05-12 | 宝山钢铁股份有限公司 | Sectional sealing head mechanism for hydraulic forming of pipes |
| CN202356486U (en) * | 2011-11-11 | 2012-08-01 | 张可武 | Sealing piston for hydraulic forming |
| CN206316212U (en) * | 2016-12-06 | 2017-07-11 | 柳州科瑞科技有限公司 | A kind of zigzag for forming high pressure in pipe is cut somebody's hair |
-
2016
- 2016-12-06 CN CN201611108586.9A patent/CN106853473B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092383U (en) * | 1991-03-23 | 1992-01-08 | 苏继民 | Double cup type self-seal and hydraulic pressure casing swage |
| DE4309680A1 (en) * | 1993-03-25 | 1994-09-29 | Huber & Bauer Gmbh | Apparatus for the internal high-pressure forming of a tubular blank |
| JP3648653B2 (en) * | 1996-08-30 | 2005-05-18 | カルソニックカンセイ株式会社 | Nozzle for hydraulic forming |
| CN200951446Y (en) * | 2006-10-11 | 2007-09-26 | 中国科学院金属研究所 | High pressure formation end sealing for pipes |
| CN201461590U (en) * | 2009-06-22 | 2010-05-12 | 宝山钢铁股份有限公司 | Sectional sealing head mechanism for hydraulic forming of pipes |
| CN202356486U (en) * | 2011-11-11 | 2012-08-01 | 张可武 | Sealing piston for hydraulic forming |
| CN206316212U (en) * | 2016-12-06 | 2017-07-11 | 柳州科瑞科技有限公司 | A kind of zigzag for forming high pressure in pipe is cut somebody's hair |
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|---|---|
| CN106853473A (en) | 2017-06-16 |
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Effective date of registration: 20200828 Address after: 239500 east of Jingwu road and north of Weisan Road, Quanjiao Economic Development Zone, Chuzhou City, Anhui Province Patentee after: Quanjiao Kangsheng electromechanical Co.,Ltd. Address before: The beginning of 545006 Liuzhou Road, the Guangxi Zhuang Autonomous Region No. 19 standard factory building A3 building 3 floor of No. 303 Co-patentee before: LIUZHOU ASSET BODYWORK INDUSTRIAL Co.,Ltd. Patentee before: LIUZHOU KERUI SCIENCE & TECHNOLOGY Co.,Ltd. |