CN104963745A - Automobile silencer damping cotton opening filling technology - Google Patents
Automobile silencer damping cotton opening filling technology Download PDFInfo
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- CN104963745A CN104963745A CN201510293770.4A CN201510293770A CN104963745A CN 104963745 A CN104963745 A CN 104963745A CN 201510293770 A CN201510293770 A CN 201510293770A CN 104963745 A CN104963745 A CN 104963745A
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- fiber
- filling
- filling hole
- lower casing
- opening process
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Abstract
The invention provides an automobile silencer damping cotton opening filling technology. The technology comprises the following procedures that firstly, an upper half filling hole and a lower half filling hole are formed in an upper shell and a lower shell of a pre-fabricated silencer; secondly, an inner core of the silencer is installed between the upper shell and the lower shell; thirdly, the upper shell and the lower shell are subjected to press-fit and spot welding, and the upper half filling hole and the lower half filling hole are enabled to be aligned with each other to form a flat filling hole; fourthly, the part between the upper shell and the lower shell is filled with fiber through the filling hole; fifthly, the flat filling hole is flattened and closed; sixthly, the upper shell and the lower shell are welded together. The technology is adopted for carrying out filling of the fiber for the silencer, and the fiber is not prone to overflowing out of a flanging of an isolation disc; meanwhile, distribution is even, the appearance quality is high, and cost can be reduced easily.
Description
Technical field
The invention belongs to silencer for motor vehicle technical field, particularly relate to a kind of automotive muffler noise elimination cotton and fill opening process.
Background technique
Automobile noise is mainly from automobile exhaust noise.If do not add silencing apparatus, under certain speed, noise can reach more than 100 decibels.Secondly be engine noise and tyre noise, engine noise, when automobile runs well, can reach more than 90 decibels, and tyre noise the speed of a motor vehicle be 90 kilometers/time more than time, about 95 decibels can be reached.Therefore, in vent systems, add silencing apparatus, automobile exhaust noise reduction can be made.
Mobile muffler, the noise produced when being mainly used in the engine operation reducing Motor Vehicle, to be automobile exhaust pipe be made up of the pipeline that two length is different its principle, these two pipelines first separately cross again, due to these two pipelines length difference equal the half of the wavelength of the sound wave that automobile sends, two row sound waves are interfered when superposing cancel out each other and weaken the sound intensity, the sound that biography is come reduces, thus plays the effect of noise reduction.Reduce the exhaust sound of motor, and high-temp waste gas can be discharged safely and effectively.Silencing apparatus, as a part for exhaust duct, should ensure that its exhaust is unimpeded, resistance is little and sufficient intensity.Silencing apparatus will stand 500 DEG C ~ 700 DEG C high-temperature exhaust airs, ensures, in the distance travelled of automotive regulations, not damage, do not lose soundproof effect.
Existing silencing apparatus, the pipeline filling sucting sound material usually passed through in exhaust gas inside absorbs the silencing apparatus that acoustic energy reaches noise elimination object.Existing sound-absorbing material is when filling, and normally directly spray when suppressor case is not closed and insert in silencing apparatus, this kind uses non-solder noise elimination packet mode; Welding manner generally fills silencing cotton that is packed or definite shape, but the effect of filling is often not as people's will, such as easily occur that fiber overflows from the flange every dish, fiber problem pockety, and in the phenomenon such as capping place silencing cotton is excessive, because silencing cotton can not scatter uniformly, thus finally affect the soundproof effect of silencing apparatus.
Summary of the invention
For the problems referred to above that prior art exists, a kind of automotive muffler noise elimination cotton is the object of the present invention is to provide to fill opening process.
The invention provides a kind of automotive muffler noise elimination cotton and fill opening process, comprise following operation:
S1, on the upper and lower casing of prefabricated silencing apparatus, offer upper and lower filling half bore respectively;
S2, silencing apparatus inner core is loaded between described upper and lower casing;
Upper and lower casing described in S3, pressing spot welding also makes the filling hole of upper and lower filling half bore formation flat aligned with each other;
S4, from described filling hole, fiber-filled is entered between upper and lower casing;
S5, by the filling hole of described flat flatten make it closed;
S6, described upper and lower casing to be welded together.
Preferably, the connecting part of the mutual pressing of described upper and lower casing is provided with flange, described upper and lower filling half bore forms along the direction that upper and lower casing is disconnected from each other from flange compacting respectively.
Preferably, after described operation S3, also comprise following operation,
S3.1, at the binding site of described upper and lower casing in the some solder joints of filling hole periphery spot welding.
Preferably, in described operation S3.1, the solder joint of spot welding is 6-20.
Preferably, described operation S4 specifically comprises following operation,
S4.1, filling rifle is stretched in filling hole, and make the direction of described filling rifle jet fiber horizontal by an angle upwards, start ejecting gun and make it jet fiber, described ejecting gun is swung along fiber jet direction simultaneously, suspend after spraying a certain amount of fiber and spray;
S4.2, the direction of described filling rifle jet fiber to be adjusted to horizontal by a downward angle, again to start ejecting gun and make it jet fiber, described ejecting gun is swung along fiber jet direction simultaneously, stop spraying after spraying a certain amount of fiber.
Preferably, the direction of filling rifle jet fiber in the size of angle described in described operation S4.2 and described step S4.1 horizontal by the equal and opposite in direction of angle.
Preferably, the fiber of filling in described operation S4 is glass fibre.
Preferably, after described operation S5, also comprise following operation,
S5.1, by the several solder joint of spot welding on the position of the filling hole after pressing;
S5.2, with buffing machine to the solder joint polishing treatment in operation S5.1.
Preferably, in described operation S5.1, the number of welds of spot welding is 2-4.
Preferably, described operation S6 adopts robot to be welded together by upper and lower casing.
In sum, the present invention has the following advantages:
Adopt technique of the present invention to carry out the filling of silencing apparatus fiber, fiber not easily overflows from the flange every dish, simultaneously distribution uniform, meets standard-required after drawn test.Filling hole is after flattening and closing process, and surface of shell is positioned near filling hole and does not ftracture with seriously wrinkling, and appearance quality is higher, ensure that casing rigidity requirement simultaneously, improves the quality level of silencing apparatus entirety.Adopt above-mentioned technique to be also conducive in addition cost-saving, due to fiber-filled evenly and not easily excessive, make pouring of fiber measure to reduce, the distortion of auxiliary hole pressing rear case is little simultaneously, and housing is repaired and the workload of welding is minimized.
Accompanying drawing explanation
Fig. 1 is the schematic diagram forming filling hole in the embodiment of the present invention after upper and lower casing pressing;
Fig. 2 fills the schematic diagram that rifle stretches into fiberfill fibers in filling hole in the embodiment of the present invention;
Fig. 3 is the schematic diagram that embodiment of the present invention silencing apparatus assembles;
Fig. 4 is the appearance quality figure of the silencing apparatus of explained hereafter provided by the invention in outward appearance test;
Fig. 5 is the appearance quality figure of the silencing apparatus that in outward appearance test, contrast experiment produces.
Embodiment
Do to illustrate in detail, intactly further to the present invention below in conjunction with mode of execution and accompanying drawing.
As Figure 1-5, the invention provides a kind of automotive muffler noise elimination cotton and fill opening process, comprise following operation:
S1, on the upper and lower casing 1,2 of prefabricated silencing apparatus, offer upper and lower filling half bore 11,21 respectively.
The connecting part of the mutual pressing of described upper and lower casing 1,2 is provided with flange 4, and described upper and lower filling half bore 11,21 forms along upper and lower casing 1,2 directions disconnected from each other from flange 4 compacting respectively.
The size dimension offered of upper and lower filling half bore 11,21 is depending on welding rifle gun barrel 5 diameter.As shown in Figure 2, can should be advisable at filling hole 3 flexible rotating with gun barrel 5.
S2, silencing apparatus inner core to be loaded between described upper and lower casing 1,2.
Upper and lower casing 1,2 described in S3, pressing spot welding also makes the filling hole 3 of upper and lower filling half bore 11,21 formation flat aligned with each other.
S3.1, at the binding site of described upper and lower casing 1,2 in filling hole 3 periphery spot welding 6 or 8 or 10 or 12 or 14 or 16 or 18 or 20 solder joints.Solder joint number depending on the concrete size of upper and lower casing 1,2 and filling hole 3.
S4, fiber-filled to be entered between upper and lower casing 1,2 from described filling hole 3.
S4.1, stretch in filling hole 3 by filling the gun barrel 5 of rifle, and make the direction of described filling rifle jet fiber horizontal by an angle upwards, start ejecting gun and make it jet fiber, described ejecting gun is swung along fiber jet direction simultaneously, suspend after spraying a certain amount of fiber and spray;
S4.2, the direction of described filling rifle jet fiber to be adjusted to horizontal by a downward angle, again to start ejecting gun and make it jet fiber, described ejecting gun is swung along fiber jet direction simultaneously, stop spraying after spraying a certain amount of fiber.
The direction of filling rifle jet fiber in the size of angle described in described operation S4.2 and described step S4.1 horizontal by the equal and opposite in direction of angle.The fiber of filling in described operation S4 is glass fibre.
S5, by the filling hole 3 of described flat flatten make it closed.
S5.1, by the several solder joint of spot welding on the position of the filling hole after pressing;
S5.2, with buffing machine to the solder joint polishing treatment in operation S5.1.
The number of welds of spot welding in described operation S5.1 is 2 or 3 or 4.
When the filling hole 3 of flat makes pressing, comparatively circular port is larger to make the lifting surface area at its edge, be conducive to stroke Reducing distortion space when reducing pressing simultaneously, so the effect after its pressing is better, upper and lower casing 1,2 surface to be positioned near filling hole 3 not cracking and seriously wrinkling, and appearance quality is higher, ensure that casing rigidity requirement simultaneously, also help the raising of the hunting range of ejecting gun gun barrel 5, make fiber-filled evenly.
S6, described upper and lower casing 1,2 to be welded together.
Described operation S6 adopts robot to be welded together by upper and lower casing.
Automotive muffler noise elimination cotton fills opening process effect experimental
In order to whether the silencing apparatus testing the production of automotive muffler noise elimination cotton provided by the invention filling opening process is qualified, adopt above-mentioned explained hereafter 100 silencing apparatuss, this silencing apparatus is referred to as product 1 hereinafter.Additionally provide a contrast experiment simultaneously, the technique that in contrast experiment, all the other techniques and the invention process provide is identical, just after upper and lower casing 1,2 pressing, the filling hole 3 of upper and lower filling half bore 11,21 formation aligned with each other is circular, change contrast experiment and produce 100 silencing apparatuss, this silencing apparatus is referred to as product 2 hereinafter.
After production, by product 1 with test as follows for product 2:
1, outward appearance test, check product 1 and be product 2 filling hole 3 near surface quality, main check pressing after filling hole 3 near whether have cracking and seriously wrinkling, if any being then substandard product, there to be then qualified.Be illustrated in figure 4 the appearance quality situation of the sample extracted from 100 products 1, its appearance quality is good, and nothing is wrinkling and cracking seriously, is acceptable product.Be illustrated in figure 5 the appearance quality situation of the sample extracted from 100 products 2, it is outer second-rate, has seriously wrinkling and cracking situation, is identified as substandard product.
The External Observation test result of final 100 products 1 and 100 products 2 is as following table:
2, tensile fiber test, by the fiber of having filled, gets 1.5 meters, lower extension 1KG weight, and after stretching, specific elongation is greater than 105%, is acceptable product.100 products 1 and 100 products 2 are detected respectively.
Testing result is as following table:
From above-mentioned test, the up-to-standard rate of product 1 is far away higher than the up-to-standard rate of product 2, therefore automotive muffler noise elimination cotton provided by the invention is adopted to fill the silencing apparatus of opening process production, fiber not easily overflows from the flange every dish, distribution uniform simultaneously, after drawn test, conforming product rate is higher.Surface of shell is positioned near filling hole 3 and does not ftracture with seriously wrinkling, and appearance quality is higher, ensure that casing rigidity requirement simultaneously, improves the quality level of silencing apparatus entirety.Adopt above-mentioned technique to be also conducive in addition cost-saving, due to fiber-filled evenly and not easily excessive, make pouring of fiber measure to reduce, the distortion of auxiliary hole pressing rear case is little simultaneously, and housing is repaired and the workload of welding is minimized.
The above embodiment of the present invention is only the use that technical solution of the present invention is described simultaneously, is only enumerating of technical solution of the present invention, is not limited to technological scheme of the present invention and protection domain thereof.Equivalent technologies means, equivalent apparatus etc. is adopted to be considered to be to the improvement of the technological scheme disclosed in claims of the present invention and specification the scope do not exceeded disclosed in claims of the present invention and specification.
Claims (10)
1. automotive muffler noise elimination cotton fills an opening process, it is characterized in that, comprises following operation:
S1, on the upper and lower casing of prefabricated silencing apparatus, offer upper and lower filling half bore respectively;
S2, silencing apparatus inner core is loaded between described upper and lower casing;
Upper and lower casing described in S3, pressing spot welding also makes the filling hole of upper and lower filling half bore formation flat aligned with each other;
S4, from described filling hole, fiber-filled is entered between upper and lower casing;
S5, by the filling hole of described flat flatten make it closed;
S6, described upper and lower casing to be welded together.
2. automotive muffler noise elimination cotton as claimed in claim 1 fills opening process, it is characterized in that, the connecting part of the mutual pressing of described upper and lower casing is provided with flange, and described upper and lower filling half bore forms along the direction that upper and lower casing is disconnected from each other from flange compacting respectively.
3. automotive muffler noise elimination cotton as claimed in claim 1 fills opening process, it is characterized in that, after described operation S3, also comprises following operation,
S3.1, at the binding site of described upper and lower casing in the some solder joints of filling hole periphery spot welding.
4. automotive muffler noise elimination cotton as claimed in claim 3 fills opening process, it is characterized in that, in described operation S3.1, the solder joint of spot welding is 6-20.
5. automotive muffler noise elimination cotton as claimed in claim 1 fills opening process, and it is characterized in that, described operation S4 specifically comprises following operation,
S4.1, filling rifle is stretched in filling hole, and make the direction of described filling rifle jet fiber horizontal by an angle upwards, start ejecting gun and make it jet fiber, described ejecting gun is swung along fiber jet direction simultaneously, suspend after spraying a certain amount of fiber and spray;
S4.2, the direction of described filling rifle jet fiber to be adjusted to horizontal by a downward angle, again to start ejecting gun and make it jet fiber, described ejecting gun is swung along fiber jet direction simultaneously, stop spraying after spraying a certain amount of fiber.
6. automotive muffler noise elimination cotton as claimed in claim 5 fills opening process, it is characterized in that, the direction of filling rifle jet fiber in the size of angle described in described operation S4.2 and described step S4.1 horizontal by the equal and opposite in direction of angle.
7. the automotive muffler noise elimination cotton as described in claim 1 or 5 or 6 fills opening process, and it is characterized in that, the fiber of filling in described operation S4 is glass fibre.
8. automotive muffler noise elimination cotton as claimed in claim 1 fills opening process, it is characterized in that, after described operation S5, also comprises following operation,
S5.1, by the several solder joint of spot welding on the position of the filling hole after pressing;
S5.2, with buffing machine to the solder joint polishing treatment in operation S5.1.
9. automotive muffler noise elimination cotton as claimed in claim 8 fills opening process, it is characterized in that, the number of welds of spot welding in described operation S5.1 is 2-4.
10. automotive muffler noise elimination cotton as claimed in claim 1 fills opening process, it is characterized in that, described operation S6 adopts robot to be welded together by 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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| CN104963745A true CN104963745A (en) | 2015-10-07 |
| CN104963745B CN104963745B (en) | 2018-02-06 |
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| CN201510293770.4A Active CN104963745B (en) | 2015-06-01 | 2015-06-01 | A kind of automotive muffler noise elimination cotton fills opening process |
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Cited By (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 active Active
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 |
Cited By (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 |
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| Publication number | Publication date |
|---|---|
| CN104963745B (en) | 2018-02-06 |
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