CN1687568A - Technique for manufacturing heat insulated muffler - Google Patents
Technique for manufacturing heat insulated muffler Download PDFInfo
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- CN1687568A CN1687568A CN 200510020640 CN200510020640A CN1687568A CN 1687568 A CN1687568 A CN 1687568A CN 200510020640 CN200510020640 CN 200510020640 CN 200510020640 A CN200510020640 A CN 200510020640A CN 1687568 A CN1687568 A CN 1687568A
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- thermal barrier
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Abstract
The invention relates to a manufacturing technique of insulating silencer, which comprises the following processes: blanking-inner coating heated matters (fiber glass or asbestos)-putting into the outer tuber-composite welding-bending-tail tube composition-plating. The treatment methods of the inner coating hot matters have the distributing method, which divides the fiber glass or asbestos into thin lines to wind single-layered or multi-layered, or the compact method, which makes the fiber glass or asbestos into the barrel-shape corresponding to the inner tuber outline and directly sleeves it on the inner tube and covers the outer tuber after the insulating coating. The invention through the filling of the insulating matters between the inner and the outer tubes ensures the minimum clearance and the well proportion of the clearance.
Description
Technical field
The invention belongs to the Vehicular silencer technical field, be specifically related to a kind of technique for manufacturing heat insulated muffler.
Background technique
Silencing apparatus is the indispensable important spare part of motorcycle, and it has conclusive effect to the influence of environmental protection.Particularly in use silencing apparatus owing to be subjected to the influence of motor, often cause the silencing apparatus outer tube hot, phenomenons such as chrome-plated surface " jaundice ", " turning blue " have a strong impact on the use and the aesthetic appearance of motorcycle, and this is the current almost insurmountable difficult problem of motorcycle industry.At this difficult problem, the claimant is through a large amount of practice and analysis, finds that the gap whether generation of this problem depend primarily between the silencing apparatus inner and outer pipes is too little.So the gap of how controlling between the inner and outer pipes becomes the key of dealing with problems.
In the silencing apparatus production industry in the past, what the production of bimetallic tube combination silencing apparatus was adopted is the technological method that Japan introduces, i.e. " freezing ", and its process step is as follows:
---gang welding---product after the welding is put into water tank, and---freezing (40 ℃)------bending is electroplated by thaw---tail pipe combination---in blanking
The product that this technology obtains see shown in Figure 1 it be to control gap between two pipes by " ice sheet " in that interior pipe 1 and outer tube 2 soldering group are fashionable, but this " ice sheet " is thinner, inner and outer pipes will produce contact (no gap) when brake forming, as A position among the figure and B position, naturally, near the gap both contact position also diminishes relatively.Outer tube is arrived with the heat transfer of interior pipe soon in above-mentioned position under the effect of engine high-temperature, because interior pipe transport velocity is very fast, make the outer tube heating too high, and natural air cooled also can't making it cooled off, and makes outer tube-surface " jaundice ", " turning blue ".Therefore, if two tube wall gaps are even, then heat radiation evenly can prevent that " jaundice ", " turning blue " phenomenon from taking place.
Summary of the invention
The objective of the invention is at the prior art above shortcomings, a kind of technique for manufacturing heat insulated muffler is provided, by between inner and outer pipes, forming uniform gap with the thermal barrier filling forms aborning, thereby avoid outer tube hot and surperficial " jaundice ", " turning blue " phenomenon to take place.
For achieving the above object, what the present invention adopted is " thermal barrier completion method ", and its process step is as follows:
---interior pipe bag thermal barrier (glass fibre or asbestos etc.)---------gang welding is electroplated the outer tube of packing into by bending---tail pipe combination---in blanking
The thermal barrier filling method has a variety of to the filling mode of thermal barrier, what expect easily usually is to adopt bulk material to fill after inner and outer pipes assembles again, the applicant finds through great deal of experimental, the employing bulk material is filled, and adopts the artificial or mechanical defective that all can produce in various degree no matter be:
Defective one: manually in adopting the bulk material course of working, because packing material is loose, it is very difficult loading in (3-4mm) in two-tube gap, be unfavorable for producing in enormous quantities, can only try at research process, simultaneously in bulkly easily fly upward, cause atmospheric pollution.
Defective two: adopting machining, can adopt air-tight manner, but easily cause filling not in place because material is loose, mainly is that the gap is little, and material feeding rod is meticulous, longer, and the gap inequality between the tube and tube causes, so be difficult to realize.
Defective three: because in the sample presentation process in less gap, easily cause the stuffing degree of tightness not wait, when bend pipe, easily cause separating of material and material, the space occurs or do not have the generation of material, because thin when thick during filler, little when big when causing the product of bend pipe, can not satisfy the product appearance requirement.
The applicant is through repeatedly development test, two kinds of special processing modes have been found at last, both line-disparting types, in the employing of inner tube outer surface bag thermal barrier glass fibre or asbestos rope are divided into the form that fine rule carries out the single or multiple lift winding, perhaps plainly-packed formula is made the tubular that adapts with interior pipe profile earlier with glass fibre or asbestos, directly be placed on the interior pipe, after thermal barrier wraps up, overlap outer tube again, such mode can fully guarantee to form between inner and outer pipes gap relatively uniformly.
Therefore, this technology had both guaranteed minimum clearance between the two by filled thermal barrier between inner and outer pipes when bending deflection, can make whole gap even relatively simultaneously.Because thermal barrier is arranged, the speed that " heat " of pipe reaches outer tube in can making slows down, and heat radiation evenly.Can prevent that " jaundice ", " turning blue " phenomenon from taking place.Therefore, this technology has remedied " freezing " defective on the inner and outer pipes gap control just.
Description of drawings
Fig. 1 is the structural drawing of the silencing apparatus produced of existing production technology;
Fig. 2 is the structural drawing of the silencing apparatus produced of technology of the present invention.
Embodiment
Embodiment: technique for manufacturing heat insulated muffler, its process step is as follows:
1, blanking, pipe and outer tube in obtaining respectively to meet the requirements;
2, at inner tube outer surface bag thermal barrier glass fibre or asbestos
This step can adopt dual mode to realize, i.e. " line-disparting type " and " plainly-packed formula ":
1) line-disparting type manufacturing process: be to be 1mm with becoming the per share diameter of asbestos (multiplied yarn) of wire, every 12 strands of compositions, it is divided into single cord respectively, in course of working with per two uniformly from top around to terminal, make the packing uniformity of inner tube outer surface, pack into then in the outer tube, just can solve the problem that packing is inhomogeneous or the gap is less than normal;
2) plainly-packed formula manufacturing process: will make the empty tube packing of finished product earlier, and downcut, and then the wound packages packing will be placed on the outer wall of inner tube, will have the inner core of packing to be inserted in the outer tube again by the size of necessary requirement.
3, reinstall outer tube
4, gang welding is carried out at the inner and outer pipe two ends
5, whole bending
6, assemble tail pipe again
7, electroplate.
See Fig. 2 by the complete product structure that above-mentioned technology obtains, among the figure, wrapped up heat insulation packing 3 between interior pipe 1 and the outer tube 2 equably, make to have between interior pipe 1 and the outer tube 2 too small or contact position, gap to occur.
The applicant is after adopting " thermal barrier completion method " to produce silencing apparatus, and metachromatism does not appear in road test by 25000km yet.In addition, under motor does not have radiating condition: before the improvement, silencing apparatus just begins variable color in high engine speeds (10000 rev/mins) continuous operation in the time of 45 seconds; After the improvement, work and all do not have variable color in 1 minute 45 seconds.Simultaneously, the silencing apparatus after the improvement can reduce by 2 ~ 4dB to ambient noise, has realized the lifting and the environmental protection of quality of product.Though the thermal barrier completion method can solve the problem of silencing apparatus " jaundice ", " turning blue ", realize a great problem really of manufacturing process in process of production.
Claims (2)
1, a kind of technique for manufacturing heat insulated muffler, its process step is as follows:
(1) blanking, pipe and outer tube in obtaining respectively:
(2) at inner tube outer surface bag thermal barrier glass fibre or asbestos;
(3) the outer outer tube of packing into;
(4) with inner and outer pipe two; End carries out gang welding
(5) whole bending;
(6) assemble tail pipe again;
(7) electroplate.
2, production technology according to claim 1, it is characterized in that: adopt at inner tube outer surface bag thermal barrier glass fibre or asbestos rope are divided into the form that fine rule carries out the single or multiple lift winding, perhaps, glass fibre or asbestos are made the tubular that adapts with interior pipe profile earlier, directly be placed on the interior pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510020640 CN1687568A (en) | 2005-03-29 | 2005-03-29 | Technique for manufacturing heat insulated muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510020640 CN1687568A (en) | 2005-03-29 | 2005-03-29 | Technique for manufacturing heat insulated muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1687568A true CN1687568A (en) | 2005-10-26 |
Family
ID=35305610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510020640 Pending CN1687568A (en) | 2005-03-29 | 2005-03-29 | Technique for manufacturing heat insulated muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1687568A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818673A (en) * | 2010-04-20 | 2010-09-01 | 东莞市旗丰消声器有限公司 | Process for manufacturing muffler |
| CN106525399A (en) * | 2016-11-11 | 2017-03-22 | 成都陵川特种工业有限责任公司 | Improved muffler manufacture method |
| CN111300184A (en) * | 2020-04-01 | 2020-06-19 | 叶庆国 | Welding treatment process for automobile sheet metal parts |
| CN114871708A (en) * | 2022-06-09 | 2022-08-09 | 佛山市徽粤金属科技有限公司 | Processing technology and structure of exhaust pipe of motorcycle |
-
2005
- 2005-03-29 CN CN 200510020640 patent/CN1687568A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818673A (en) * | 2010-04-20 | 2010-09-01 | 东莞市旗丰消声器有限公司 | Process for manufacturing muffler |
| CN106525399A (en) * | 2016-11-11 | 2017-03-22 | 成都陵川特种工业有限责任公司 | Improved muffler manufacture method |
| CN111300184A (en) * | 2020-04-01 | 2020-06-19 | 叶庆国 | Welding treatment process for automobile sheet metal parts |
| CN114871708A (en) * | 2022-06-09 | 2022-08-09 | 佛山市徽粤金属科技有限公司 | Processing technology and structure of exhaust pipe of motorcycle |
| CN114871708B (en) * | 2022-06-09 | 2023-11-07 | 佛山市徽粤金属科技有限公司 | Exhaust pipe processing technology and structure of motorcycle |
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