CN104511543B - Closing device for pipe fitting - Google Patents
Closing device for pipe fitting Download PDFInfo
- Publication number
- CN104511543B CN104511543B CN201310460389.3A CN201310460389A CN104511543B CN 104511543 B CN104511543 B CN 104511543B CN 201310460389 A CN201310460389 A CN 201310460389A CN 104511543 B CN104511543 B CN 104511543B
- Authority
- CN
- China
- Prior art keywords
- pipe fitting
- closing device
- groove
- noumenon
- projection
- 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.)
- Expired - Fee Related
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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
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention provides a kind of closing device for pipe fitting, including：First stamping parts, including the first noumenon and the groove being arranged on the first noumenon；Second stamping parts, including the second body and the projection being arranged on the second body, projection is accordingly arranged with groove, and the raised shape having with fit depressions.The closing device of the present invention extrudes pipe fitting in the form of raised and groove fit, so that the stress surface on pipe fitting increases, achieve stress dispersion, effectively prevent intensity decreases or slight crack that pipe fitting is caused due to stress concentration, the sealing that pipe fitting is sealed is improve and then, and improve the seal quality of pipe fitting.
Description
Technical field
The present invention relates to mechanical field, more particularly, to a kind of closing device for pipe fitting.
Background technology
Process duct in air-conditioner hose system is air-conditioner evacuation, the critical piece of perfusion coolant, assembles in pipeline
During process duct to be sealed, what the sealing and intensity of the sealing of process duct directly affected air-conditioner hose system can
Lean on property and quality.
Technique channel closure is mainly carried out by the way of gas brazing in prior art, and using cutting edge instrument auxiliary envelope
Mouthful.The mode of operation of cutting edge instrument is that process duct to be sealed is placed between two folder swords, the inside extrusion process pipe of two folder swords, will
Technique pipe clamp is flat, realizes sealing.Although the cutting edge type refrigeration system pipeline enclosuring structure can effectively prevent cold-producing medium from leaking, complete
Sealing operation, but concentrated very much by the flat stress of folder of the flat process duct of cutting edge tool kit, if being bent repeatedly easily to go out by external force
Existing crackle, or even rupture.Additionally, carrying out mechanical analyses to the exemplar of sealed process duct and micro metallographic analysis can
Know, cutting edge instrument can form stress coincidence area (the flat stress of sealing clip and refrigeration system internal pressure at the two ends at the flat place of tubing clamp
Overlap), and fine crack is caused, and constantly extend until occurring splitting leakage in refrigeration system running.
Content of the invention
The present invention is intended to provide a kind of closing device for pipe fitting, to solve when sealing of prior art to pipe fitting
Easily there is stress concentration in seal location, the structure for destroying pipe fitting even makes pipe fitting that the problem of leakage occurs.
For solving above-mentioned technical problem, the invention provides a kind of closing device for pipe fitting, including：First punching press
Part, including the first noumenon and the groove being arranged on the first noumenon；Second stamping parts, including the second body and is arranged on second
Projection on body, projection are accordingly arranged with groove, and the raised shape having with fit depressions.
Further, opening of the groove on the upper surface of the first noumenon is rounded.
Further, groove includes that first paragraph and second segment, second segment are arranged on the bottom of first paragraph, second segment and first
The opening diameter of the intersection of section less than or equal to opening diameter of the first paragraph on the upper surface of the first noumenon 1/3rd.
Further, the opening diameter of the intersection with first paragraph of second segment be the diameter of pipe fitting 83.3% to
116.7%.
Further, the first stamping parts also includes that two projections, two projections are protruded from towards the direction of the first stamping parts
The first noumenon, groove are arranged between two projections.
Further, the end away from the first noumenon of projection is in arcs of recesses.
Further, the distance between two projections for the diameter of pipe fitting 33.3% to 66.7%.
Further, the depth capacity of groove for the diameter of pipe fitting 50% to 83.3%.
Further, closing device also includes that the first motion arm being hinged and the second motion arm, the first noumenon are arranged
On the first motion arm, the second body is arranged on the second motion arm.
Further, closing device also includes that piston cylinder, the first motion arm are connected with the cylinder body of piston cylinder, the second motion arm
It is connected with the piston rod of piston cylinder.
The closing device of the present invention extrudes pipe fitting in the form of raised and groove fit so that the stress surface on pipe fitting increases
Plus, it is achieved that stress disperses, and effectively prevent intensity decreases or slight crack that pipe fitting is caused due to stress concentration, and then improves pipe
The sealing of part sealing, and improve the seal quality of pipe fitting.
Description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 diagrammatically illustrates a kind of sectional view of the closing device in the present invention；
Fig. 2 diagrammatically illustrates the side view of the closing device in the Fig. 1 in the present invention；
Fig. 3 diagrammatically illustrates the sectional view of another kind of closing device in the present invention；
Fig. 4 diagrammatically illustrates the side view of the closing device in the Fig. 3 in the present invention；
Fig. 5 diagrammatically illustrates the schematic perspective view of the closing device in Fig. 3 and Fig. 4 in the present invention；
Fig. 6 diagrammatically illustrates the step of the closing device in the present invention carries out sealing operation 1 schematic diagram；
Fig. 7 diagrammatically illustrates the step of the closing device in the present invention carries out sealing operation 2 schematic diagram；And
Fig. 8 diagrammatically illustrates the step of the closing device in the present invention carries out sealing operation 3 schematic diagram.
Reference in figure：10th, the first stamping parts；11st, the first noumenon；12nd, groove；20th, the second stamping parts；21st, second
Body；22nd, raised；13rd, projection；30th, the first motion arm；40th, the second motion arm；50th, pipe fitting；60th, snap joint；70th, seal
Glue；121st, first paragraph；122nd, second segment.
Specific embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways for covering.
The invention provides a kind of closing device for pipe fitting, as shown in Fig. 1 to 8, the closing device includes：First punching
Casting die 10, including the first noumenon 11 and the groove 12 being arranged on the first noumenon 11；Second stamping parts 20, including the second body 21
With the projection 22 being arranged on the second body 21, raised 22 are accordingly arranged with groove 12, and raised 22 have and groove 12
The shape being engaged.
The closing device of the present invention extrudes pipe fitting 50 in the form of coordinating with groove 12 using raised 22 so that on pipe fitting 50
Stress surface increases, it is achieved that stress disperses, and effectively prevent intensity decreases or slight crack that pipe fitting 50 is caused due to stress concentration, enters
The sealing that pipe fitting 50 is sealed is improve and, and improve the seal quality of pipe fitting 50.
Preferably, as illustrated in fig. 1 and 2, opening of the groove 12 on the upper surface of the first noumenon 11 is rounded.In groove 12
Curved in the axial direction of pipe fitting 50 with raised 22, the lifting surface area that extruding pipe fitting 50 makes can be effectively increased, it is to avoid stress concentration.
Preferably, groove 12 includes that first paragraph 121 and second segment 122, second segment 122 are arranged on the bottom of first paragraph 121,
Second segment 122 is less than or equal to upper surface of the first paragraph 121 in the first noumenon 11 with the opening diameter of the intersection of first paragraph 121
On opening diameter 1/3rd.Second segment 122 can form bump structure on pipe fitting 50, can so increase sealing part
Structural strength, it is ensured that the sealing of the sealing of pipe fitting 50.
Preferably, second segment 122 with the opening diameter of the intersection of first paragraph 121 be pipe fitting 50 diameter 83.3%
To 116.7%.Preferably, the depth capacity of groove 12 for the diameter of pipe fitting 50 50% to 83.3%.Preferably, on pipe fitting 50
Sealing molding total length for technique pipe diameter 133% to 200%.
By taking the pipe fitting 50 of Φ 6 as an example, the total length about 8mm to 12mm of molding, the diameter of the middle salient point of sealing part are sealed
About 5mm to 7mm, during sealing operation, raised 22 depth for entering groove 12 are about 3mm to 5mm.
Preferably, if Fig. 3 is to 5, the first stamping parts 10 also includes two projections 13, and two projections 13 are towards the first stamping parts
10 direction protrudes from the first noumenon 11, and groove 12 is arranged between two projections 13.In sealing operation, projection 13 can be in pipe
Type groove is formed on part 50, and type groove can increase the intensity of the sealing part of pipe fitting 50, increase the sealing of sealing part.
Preferably, the end away from the first noumenon 11 of projection 13 is in arcs of recesses.Preferably, the end of two projections 13
Arcs of recesses is coaxial.Arcs of recesses can increase the stress surface of pipe fitting 50, it is to avoid stress concentration.
Preferably, the distance between two projections 13 for the diameter of pipe fitting 50 33.3% to 66.7%.Preferably, groove 12
Depth capacity for pipe fitting 50 diameter 50% to 83.3%.Preferably, the total length of the sealing molding on pipe fitting 50 is work
The 133% to 200% of skill pipe diameter.
By taking the pipe fitting 50 of Φ 6 as an example, the total length about 8mm to 12mm of molding sealed, and sealing part is formed by projection 13
Distance between type groove is about 2mm to 4mm, and during sealing operation, raised 22 depth for entering groove 12 are about 3mm to 5mm.
Preferably, as shown in Fig. 6 to 8, closing device also includes the first motion arm 30 being hinged and the second motion arm
40, the first noumenon 11 is arranged on the first motion arm 30, and the second body 21 is arranged on the second motion arm 40.Closing device can be with
Sealing plierses are fabricated to, as closing device is sealed using punching press form, so accurate perception dynamics is not needed, as long as ensureing punching press
Depth ensures that the sealing of sealing enough, and is difficult to cut off pipe fitting 50, easy to operate.
Preferably, closing device also includes that piston cylinder, the first motion arm 30 are connected with the cylinder body of piston cylinder, the second motion arm
40 are connected with the piston rod of piston cylinder.The first noumenon 11 of closing device and the second body 21 can also be coordinated with piston element,
As hydraulic tongs or air pressure are clamped, to complete sealing operation by external force.This kind of closing device does not show in the drawing of the present application
Go out.
The step of sealing operation, mainly divides three steps, Fig. 6 to 8 to respectively illustrate three steps：First with closing device pair
Pipe fitting 50 is once sealed, and unclamps closing device, after removing snap joint 60, it is desirable to which pipe fitting is let out without obvious working medium after sealing
Leakage；Then the sealing compound 70 of 0.1ml to 0.3ml is poured into from the opening of pipe fitting, and preferably sealing compound 70 is anaerobic structure glue,
Glue should go deep into 6mm to 8mm in the mouth of pipe, it is ensured that have enough glue attachments during secondary sealing in pipe fitting 50；Finally 1 point after encapsulating
In clock, secondary sealing is carried out to the port position of pipe fitting 50 with closing device, range estimation sealing part is without clear gap, electronics after sealing
Leak detector leak detection alarm free.
How the closing device for theoretically being derived the present invention below is realized avoiding stress concentration, realizes stress point
Scattered effect.
Pipe fitting 50 is ruptured if there is a power, there will necessarily be a limit stress, i.e. the second strength theory：No matter
Material is in any stress state, as long as there is brittle fracture, is reached due to the maximum stretching strain (line deformation) in infinitesimal
Elongation at rupture strain numerical value during simple extension.
According to two to state stress analysis, in analytic method, according to Liu Hongwen versions materials mechanics chapter 7 ess-strain point
In analysis two are obtained to state stress analysis formula, and the maximum stress on this infinitesimal oblique section is：
Assume that infinitesimal oblique section area is S0, then bring above formula into and obtain：
σmax=2F/S0；
Obtained to state stress analysis formula according to two in Liu Hongwen versions materials mechanics chapter 7 stress-strain analysis, this
Maximum stress on infinitesimal oblique section：
Assume that infinitesimal oblique section area is S2, then bring above formula into and obtain：
σmax=2F/S2；
Obtained to state stress analysis formula according to two in Liu Hongwen versions materials mechanics chapter 7 stress-strain analysis, this
Maximum stress on infinitesimal oblique section：
Assume that infinitesimal oblique section area is S3, then bring above formula into and obtain：
σmax=2F/S3；
By the model stress analysis of several structures：In the case where same pulling force F, pressure F is applied, prior art
In the enclosuring structure that formed on the pipe fitting 50 of cutting edge instrument, the enclosuring structure that formed of the first closing device in the present invention and
The maximum stress of the area of stress concentration of the enclosuring structure that second closing device in the present invention is formed is respectively：
2F/S0、2F/S2、2F/S3；
Known from several structural models above again：
S0<S2, S2<S3；
So as to draw：
2F/S0>2F/S2、2F/S0>2F/S3.
Conclusion：Closing device using the present invention is in pipe fitting 50 enclosuring structure for being formed and the envelope formed using cutting edge instrument
Mouth structure is compared, and stress surface increases, and stress more disperses.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of closing device for pipe fitting, it is characterised in that include：
First stamping parts (10), including the first noumenon (11) and the groove (12) being arranged on the first noumenon (11)；
Second stamping parts (20), including the second body (21) and the projection (22) being arranged on the second body (21), described
Raised (22) are accordingly arranged with the groove (12), and the projection (22) has the shape being engaged with the groove (12)
Shape；
The opening of groove (12) on the upper surface of the first noumenon (11) is rounded；
First stamping parts (10) also include two projections (13), and described two projection (13) are towards first stamping parts
(10) direction protrudes from the first noumenon (11), and groove (12) are arranged between described two projections (13).
2. closing device according to claim 1, it is characterised in that described groove (12) include first paragraph (121) and the
Two-stage nitration (122), second segment (122) are arranged on the bottom of the first paragraph (121), second segment (122) and described
The opening diameter of the intersection of a section (121) is less than or equal to upper table of the first paragraph (121) in the first noumenon (11)
/ 3rd of opening diameter on face.
3. closing device according to claim 2, it is characterised in that second segment (122) with the first paragraph
(121) opening diameter of intersection is the 83.3% to 116.7% of the diameter of the pipe fitting (50).
4. closing device according to claim 1, it is characterised in that projection (13) away from the first noumenon
(11) end is in arcs of recesses.
5. closing device according to claim 1, it is characterised in that the distance between described two projection (13) is the pipe
The 33.3% to 66.7% of the diameter of part (50).
6. closing device according to claim 1, it is characterised in that the depth capacity of groove (12) is the pipe fitting
(50) the 50% to 83.3% of diameter.
7. closing device according to claim 1, it is characterised in that the closing device also includes first for being hinged
Motion arm (30) and the second motion arm (40), the first noumenon (11) are arranged on the first motion arm (30), and described
Two bodies (21) are arranged on the second motion arm (40).
8. closing device according to claim 7, it is characterised in that the closing device also includes piston cylinder, described
One motion arm (30) is connected with the cylinder body of the piston cylinder, and the second motion arm (40) are connected with the piston rod of the piston cylinder
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460389.3A CN104511543B (en) | 2013-09-30 | 2013-09-30 | Closing device for pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460389.3A CN104511543B (en) | 2013-09-30 | 2013-09-30 | Closing device for pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104511543A CN104511543A (en) | 2015-04-15 |
| CN104511543B true CN104511543B (en) | 2017-03-15 |
Family
ID=52787749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310460389.3A Expired - Fee Related CN104511543B (en) | 2013-09-30 | 2013-09-30 | Closing device for pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104511543B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106695909A (en) * | 2016-12-23 | 2017-05-24 | 深圳巴斯巴科技发展有限公司 | Novel sealing knife for gas-filled tube of high-voltage relay |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413613C (en) * | 2005-07-01 | 2008-08-27 | 郑坚地 | Heat pipe sealing structure, and its pressing method and special mould |
| JP5139683B2 (en) * | 2007-01-17 | 2013-02-06 | カヤバ工業株式会社 | Closing processing apparatus and closing processing method |
| EP2189229B1 (en) * | 2008-11-24 | 2012-08-01 | Neotech-Holding AG | Method of closing the end of pipes with a rectangular cross-section |
| CN101444812B (en) * | 2008-12-26 | 2010-08-18 | 九江财兴卫浴实业有限公司 | Processing method of thin-wall copper tube end cold forming seal |
| CN201988643U (en) * | 2011-03-11 | 2011-09-28 | 张瑞廷 | Sealing mould |
| CN202621747U (en) * | 2012-05-31 | 2012-12-26 | 华南理工大学 | Full-automatic heat pipe degassing and sealing device |
| CN102896242B (en) * | 2012-10-19 | 2015-01-21 | 广东恒基金属制品实业有限公司 | Spinning head and spinning sealing machine |
| CN203484548U (en) * | 2013-09-30 | 2014-03-19 | 珠海格力电器股份有限公司 | Sealing device for a pipe fitting |
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2013
- 2013-09-30 CN CN201310460389.3A patent/CN104511543B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104511543A (en) | 2015-04-15 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20170315 |