CN104963745B - A kind of automotive muffler noise elimination cotton fills opening process - Google Patents
A kind of automotive muffler noise elimination cotton fills opening process Download PDFInfo
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- CN104963745B CN104963745B CN201510293770.4A CN201510293770A CN104963745B CN 104963745 B CN104963745 B CN 104963745B CN 201510293770 A CN201510293770 A CN 201510293770A CN 104963745 B CN104963745 B CN 104963745B
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- China
- Prior art keywords
- filling
- fiber
- lower casing
- noise elimination
- automotive muffler
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 230000008569 process Effects 0.000 title claims abstract description 52
- 229920000742 Cotton Polymers 0.000 title claims abstract description 22
- 230000008030 elimination Effects 0.000 title claims abstract description 21
- 238000003379 elimination reaction Methods 0.000 title claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 48
- 230000003584 silencer Effects 0.000 claims abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 239000011148 porous material Substances 0.000 claims abstract description 3
- 229910000679 solder Inorganic materials 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000005498 polishing Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 18
- 238000002474 experimental method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000005336 cracking Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000030279 gene silencing Effects 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
The invention provides a kind of automotive muffler noise elimination cotton to fill opening process, including following process：S1, open up upper and lower filling half bore respectively on the upper and lower casing of prefabricated silencer；S2, silencer inner core loaded between the upper and lower casing；Upper and lower casing described in S3, pressing spot welding simultaneously causes the upper and lower filling half bore filling hole aligned with each other for forming flat；S4, fiber is packed between upper and lower casing from the filling hole；S5, it is allowed to close by the filling pore pressure of the flat is flat；S6, the upper and lower casing welded together.The filling of silencer fiber is carried out using the technique of the present invention, fiber is not easy to overflow from the flange of disk, while distribution uniform, and presentation quality is higher, is also beneficial to cost-effective.
Description
Technical field
The invention belongs to silencer for motor vehicle technical field, more particularly to a kind of automotive muffler noise elimination cotton filling opening work
Skill.
Background technology
Automobile noise is essentially from automobile exhaust noise.If being not added with silencer, under certain speed, noise is up to 100 points
It is more than shellfish.Secondly it is engine noise and tyre noise, engine noise up to more than 90 decibels, and is taken turns when automobile runs well
Tire noise is when speed is more than 90 km/h, up to 95 decibels or so.Therefore, silencer is added in gas extraction system, can be made
Automobile exhaust noise reduces.
Mobile muffler, it is mainly used in reducing noise caused by the engine work of motor vehicle, its principle is automobile row
Tracheae is made up of two different pipelines of length, and the two pipelines first separate to cross again, due to the length difference of the two pipelines
Value is equal to the half of the wavelength for the sound wave that automobile is sent so that two row sound waves interfere in superposition cancels out each other and weaken
The sound intensity, the sound for making to be transmitted through reduces, so as to play the effect of noise reduction.The exhaust noise of engine is reduced, and makes high-temp waste gas
Can safely and effectively it discharge.A part of the silencer as discharge duct, it should ensure that its exhaust is unimpeded, resistance is small and sufficiently strong
Degree.Silencer will be subjected to 500 DEG C~700 DEG C high-temperature exhaust airs, ensure in the distance travelled of automotive regulations, do not damage, do not lose
Soundproof effect.
Existing silencer, generally internally it is vented the pipeline filling sucting sound material passed through and reaches to absorb acoustic energy
The silencer of noise elimination purpose.Existing sound-absorbing material is in filling, typically in the case where suppressor case is not closed directly
Injection is inserted in silencer, such a to use non-solder noise elimination packet mode；Welding manner is typically filled packed or definite shape
Silencing cotton, but the effect filled often is not so good as people's will, such as fiber easily occur and overflowed from the flange of disk, fiber is distributed not
The problem of uniform, and phenomena such as silencing cotton is excessive at capping, because silencing cotton can not uniformly be spread, so as to finally influence to disappear
The soundproof effect of sound device.
The content of the invention
In view of the above-mentioned problems existing in the prior art, it is an object of the invention to provide a kind of automotive muffler noise elimination cotton to fill out
Fill opening process.
The invention provides a kind of automotive muffler noise elimination cotton to fill opening process, including following process：
S1, open up upper and lower filling half bore respectively on the upper and lower casing of prefabricated silencer；
S2, silencer inner core loaded between the upper and lower casing；
Upper and lower casing described in S3, pressing spot welding simultaneously causes the upper and lower filling half bore filling aligned with each other for forming flat
Hole；
S4, fiber is packed between upper and lower casing from the filling hole；
S5, it is allowed to close by the filling pore pressure of the flat is flat；
S6, the upper and lower casing welded together.
Preferably, flange, the upper and lower filling half bore are provided with the joint portion that the upper and lower casing presses mutually
Suppress and form from flange along upper and lower casing direction disconnected from each other respectively.
Preferably, following process is also included after the process S3,
S3.1, the upper and lower casing binding site in filling some solder joints of hole periphery spot welding.
Preferably, in the process S3.1, the solder joint of spot welding is 6-20.
Preferably, the process S4 specifically includes following process,
S4.1, filling rifle is stretched into and filled in hole, and cause the direction of the filling rifle jet fiber horizontal by one
Upward angle, start ejecting gun and be allowed to jet fiber, while the ejecting gun is swung along fiber jet direction, spray
Suspend injection after a certain amount of fiber；
S4.2, by it is described filling rifle jet fiber direction be adjusted to, horizontal by a downward angle, to start again
Ejecting gun is allowed to jet fiber, while the ejecting gun is swung along fiber jet direction, after spraying a certain amount of fiber
Stop injection.
Preferably, side of the size of angle described in the process S4.2 with filling rifle jet fiber in the process S4.1
To horizontal by angle it is equal in magnitude.
Preferably, the fiber filled in the process S4 is glass fibre.
Preferably, following process is also included after the process S5,
S5.1, by after pressing filling hole position on the several solder joints of spot welding；
S5.2, with polishing machine to the solder joint polishing in process S5.1.
Preferably, the number of welds of spot welding is 2-4 in the process S5.1.
Preferably, the process S6 is welded together upper and lower casing using robot.
In summary, the present invention has advantages below：
The filling of silencer fiber is carried out using the technique of the present invention, fiber is not easy to overflow from the flange of disk, together
When distribution uniform, drawn experiment after meet standard requirement.Hole is filled after flattening closure processing, surface of shell is positioned at filling
Nearby without cracking and serious corrugation, presentation quality is higher, while ensure that casing rigidity requirement in hole, improves silencer entirety
Quality level.Above-mentioned technique is also used to be also beneficial to cost-effective, because fiber filling is uniform and is not easy excessive so that fine
The amount of pouring of dimension is reduced, while fabrication hole pressing back casing deformation is small, and the workload of housing repairing and welding is minimized.
Brief description of the drawings
Fig. 1 is the schematic diagram for forming filling hole in the embodiment of the present invention after upper and lower casing pressing；
Fig. 2 is the schematic diagram that filling rifle stretches into fiberfill fibers in filling hole in the embodiment of the present invention；
Fig. 3 is the schematic diagram that silencer of the embodiment of the present invention assembles；
Fig. 4 is the presentation quality figure of the silencer of technique productions provided by the invention in outward appearance test；
Fig. 5 is the presentation quality figure of the silencer that contrast experiment produces in outward appearance test.
Embodiment
The present invention is made further in detail, intactly to illustrate with reference to embodiment and accompanying drawing.
As Figure 1-5, the invention provides the invention provides a kind of automotive muffler noise elimination cotton filling opening work
Skill, including following process：
S1, open up upper and lower filling half bore 11,21 respectively on the upper and lower casing 1,2 of prefabricated silencer.
It is provided with flange 4 on the joint portion that the upper and lower casing 1,2 presses mutually, the upper and lower filling half bore 11,
21 suppress from flange 4 along 1,2 direction disconnected from each other of upper and lower casing form respectively.
The size dimension opened up of upper and lower filling half bore 11,21 is depending on the diameter of rifle gun barrel 5 is welded.As shown in Fig. 2 should
It can be advisable with gun barrel 5 in the filling flexible rotating of hole 3.
S2, silencer inner core loaded between the upper and lower casing 1,2.
Upper and lower casing 1,2 described in S3, pressing spot welding simultaneously causes upper and lower filling half bore 11,21 formation flat aligned with each other
Filling hole 3.
S3.1, the upper and lower casing 1,2 binding site in filling the periphery spot welding 6 or 8 or 10 or 12 or 14 of hole 3 or
16 or 18 or 20 solder joints.Solder joint number regarding upper and lower casing 1,2 and filling 3 specific size of hole depending on.
S4, fiber is packed between upper and lower casing 1,2 from the filling hole 3.
S4.1, the gun barrel 5 for filling rifle is stretched into and filled in hole 3, and cause direction and the water of the filling rifle jet fiber
Plane is in a upward angle, starts ejecting gun and is allowed to jet fiber, while by the ejecting gun along fiber jet direction or so
Swing, suspend injection after spraying a certain amount of fiber；
S4.2, by it is described filling rifle jet fiber direction be adjusted to, horizontal by a downward angle, to start again
Ejecting gun is allowed to jet fiber, while the ejecting gun is swung along fiber jet direction, after spraying a certain amount of fiber
Stop injection.
The size of angle described in the process S4.2 and direction and the water that rifle jet fiber is filled in the step S4.1
The angle that plane is in it is equal in magnitude.The fiber filled in the process S4 is glass fibre.
S5, the filling hole 3 of the flat is flattened it is allowed to close.
S5.1, by after pressing filling hole position on the several solder joints of spot welding；
S5.2, with polishing machine to the solder joint polishing in process S5.1.
The number of welds of spot welding is 2 or 3 or 4 in the process S5.1.
When the filling hole 3 of flat causes pressing simultaneously so that the lifting surface area at its edge is bigger compared with circular port, is advantageous to
Reduce stroke Reducing distortion space during pressing, so better after its pressing, upper and lower casing 1,2 surfaces are positioned at filling
Nearby without cracking and serious corrugation, presentation quality is higher, while ensure that casing rigidity requirement, also helps ejecting gun in hole 3
The raising of the hunting range of gun barrel 5 so that fiber is filled evenly.
S6, the upper and lower casing 1,2 welded together.
The process S6 is welded together upper and lower casing using robot.
Automotive muffler noise elimination cotton fills opening process effect experiment
It is whether qualified in order to test the silencer of automotive muffler noise elimination cotton filling opening process production provided by the invention,
Using above-mentioned technique productions, 100 silencers, the silencer are hereinafter referred to as product 1.Simultaneously additionally provide one it is right
Than experiment, remaining technique is identical with the technique that the present invention implements to provide in contrast experiment, after simply upper and lower casing 1,2 presses,
Upper and lower filling half bore 11, the filling hole 3 of 21 formation aligned with each other are circle, change contrast experiment and produce 100 silencers, should
Silencer is hereinafter referred to as product 2.
After production, tested as follows by product 1 and for product 2：
1st, outward appearance is tested, and product 1 and the surface quality filled near hole 3 for product 2 is checked, after mainly checking pressing
Whether filling hole 3 nearby has cracking and serious corrugation, no then qualified if any being then substandard product.Be illustrated in figure 4 from
The presentation quality situation of the sample extracted in 100 products 1, its presentation quality is good, without serious corrugation and cracking, to close
Lattice product.The presentation quality situation of the sample extracted from 100 products 2 is illustrated in figure 5, it is outer second-rate, has
Serious corrugation and cracking situation, are identified as substandard product.
The following table of outward appearance test result of final 100 products 1 and 100 products 2：
2nd, fiber extension test, the fiber of completion will be filled, takes 1.5 meters, lower extension 1KG weights, elongation percentage is more than after stretching
105%, as qualified products.100 products 1 and 100 products 2 are detected respectively.
Testing result such as following table：
From above-mentioned test, the qualification rate of product 1 is significantly larger than the qualification rate of product 2, therefore is provided using the present invention
Automotive muffler noise elimination cotton filling opening process production silencer, fiber be not easy from the flange of disk overflow, the same to time-division
Cloth is more uniform, and product qualification rate is higher after drawn experiment.Surface of shell is near filling hole 3 without cracking and serious
Wrinkle, presentation quality is higher, while ensure that casing rigidity requirement, improves the overall quality level of silencer.Also using upper
State technique be also beneficial to it is cost-effective, due to fiber filling uniformly and be not easy excessive so that the amount of pouring of fiber is reduced, together
When fabrication hole pressing back casing deformation it is small, housing repairing and welding workload be minimized.
The above embodiment of the present invention is only to illustrate that technical solution of the present invention is used simultaneously, only the row of technical solution of the present invention
Lift, the technical scheme and its protection domain being not intended to limit the invention.Using equivalent technologies mean, equivalent apparatus etc. to this hair
The improvement of technical scheme disclosed in bright claims and specification is considered to be without departing from claims of the present invention
And the scope disclosed in specification.
Claims (9)
1. a kind of automotive muffler noise elimination cotton fills opening process, it is characterised in that including following process：
S1, open up upper and lower filling half bore respectively on the upper and lower casing of prefabricated silencer；
S2, silencer inner core loaded between the upper and lower casing；
Upper and lower casing described in S3, pressing spot welding simultaneously causes the upper and lower filling half bore filling hole aligned with each other for forming flat；
S4, fiber is packed between upper and lower casing from the filling hole；
S5, it is allowed to close by the filling pore pressure of the flat is flat；
S6, the upper and lower casing welded together；
Wherein, it is provided with flange on the joint portion that the upper and lower casing presses mutually, upper and lower filling half bore edge respectively
Upper and lower casing direction disconnected from each other is suppressed from flange to be formed.
2. automotive muffler noise elimination cotton as claimed in claim 1 fills opening process, it is characterised in that the process S3 it
Also include following process afterwards,
S3.1, the upper and lower casing binding site in filling some solder joints of hole periphery spot welding.
3. automotive muffler noise elimination cotton as claimed in claim 2 fills opening process, it is characterised in that the process S3.1
In, the solder joint of spot welding is 6-20.
4. automotive muffler noise elimination cotton as claimed in claim 1 fills opening process, it is characterised in that the process S4 is specific
Including following process,
S4.1, filling rifle is stretched into and filled in hole, and make it that the direction of the filling rifle jet fiber is upward horizontal by one
Angle, start ejecting gun and be allowed to jet fiber, while the ejecting gun is swung along fiber jet direction, injection is certain
Suspend injection after the fiber of amount；
S4.2, by it is described filling rifle jet fiber direction be adjusted to, horizontal by a downward angle, to start injection again
Rifle is allowed to jet fiber, while the ejecting gun is swung along fiber jet direction, stops after spraying a certain amount of fiber
Injection.
5. automotive muffler noise elimination cotton as claimed in claim 4 fills opening process, it is characterised in that in the process S4.2
The size of the angle with the process S4.1 fill rifle jet fiber direction horizontal by angle it is equal in magnitude.
6. the automotive muffler noise elimination cotton filling opening process as described in claim 1 or 4 or 5, it is characterised in that the process
The fiber filled in S4 is glass fibre.
7. automotive muffler noise elimination cotton as claimed in claim 1 fills opening process, it is characterised in that the process S5 it
Also include following process afterwards,
S5.1, by after pressing filling hole position on the several solder joints of spot welding；
S5.2, with polishing machine to the solder joint polishing in process S5.1.
8. automotive muffler noise elimination cotton as claimed in claim 7 fills opening process, it is characterised in that in the process S5.1
The number of welds of spot welding is 2-4.
9. automotive muffler noise elimination cotton as claimed in claim 1 fills opening process, it is characterised in that the process S6 is used
Robot welds together upper and lower casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510293770.4A CN104963745B (en) | 2015-06-01 | 2015-06-01 | A kind of automotive muffler noise elimination cotton fills opening process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510293770.4A CN104963745B (en) | 2015-06-01 | 2015-06-01 | A kind of automotive muffler noise elimination cotton fills opening process |
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| Publication Number | Publication Date |
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| CN104963745A CN104963745A (en) | 2015-10-07 |
| CN104963745B true CN104963745B (en) | 2018-02-06 |
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| CN201510293770.4A Expired - Fee Related CN104963745B (en) | 2015-06-01 | 2015-06-01 | A kind of automotive muffler noise elimination cotton fills opening process |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285890A (en) * | 2016-08-31 | 2017-01-04 | 河南中盛汽配科技股份有限公司 | Acoustic filter |
| CN112938639A (en) * | 2021-01-30 | 2021-06-11 | 江苏首华智能装备有限公司 | Fiber filling system for cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0337877A1 (en) * | 1988-04-12 | 1989-10-18 | Regie Nationale Des Usines Renault | Silencer for internal-combustion engines |
| US6412596B1 (en) * | 2001-02-01 | 2002-07-02 | Owens Corning Composites Sprl | Process for filling a muffler and muffler filled with fibrous material |
| US6446750B1 (en) * | 2001-03-16 | 2002-09-10 | Owens Corning Fiberglas Technology, Inc. | Process for filling a muffler shell with fibrous material |
| CN1553987A (en) * | 2001-09-12 | 2004-12-08 | ���ŷ� | Muffler shell filling process and muffler filled with fibrous material |
| CN103925053A (en) * | 2013-01-14 | 2014-07-16 | 三河三友汽车部件有限公司 | Manufacturing method of automotive silencer |
-
2015
- 2015-06-01 CN CN201510293770.4A patent/CN104963745B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0337877A1 (en) * | 1988-04-12 | 1989-10-18 | Regie Nationale Des Usines Renault | Silencer for internal-combustion engines |
| US6412596B1 (en) * | 2001-02-01 | 2002-07-02 | Owens Corning Composites Sprl | Process for filling a muffler and muffler filled with fibrous material |
| US6446750B1 (en) * | 2001-03-16 | 2002-09-10 | Owens Corning Fiberglas Technology, Inc. | Process for filling a muffler shell with fibrous material |
| CN1553987A (en) * | 2001-09-12 | 2004-12-08 | ���ŷ� | Muffler shell filling process and muffler filled with fibrous material |
| CN103925053A (en) * | 2013-01-14 | 2014-07-16 | 三河三友汽车部件有限公司 | Manufacturing method of automotive silencer |
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