CN110814659A - Manufacturing method of automobile silencer - Google Patents
Manufacturing method of automobile silencer Download PDFInfo
- Publication number
- CN110814659A CN110814659A CN201911126117.3A CN201911126117A CN110814659A CN 110814659 A CN110814659 A CN 110814659A CN 201911126117 A CN201911126117 A CN 201911126117A CN 110814659 A CN110814659 A CN 110814659A
- Authority
- CN
- China
- Prior art keywords
- shell
- silencer
- inner baffle
- welding
- manufacturing
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
Abstract
The invention discloses a method for manufacturing an automobile silencer, which comprises the steps of preforming a shell of the silencer, assembling core components of the silencer, putting the assembled core components into the shell, sewing the middle seam of the shell, and sealing two ends of the shell by using end covers to form the automobile silencer, wherein the method for manufacturing the automobile silencer can avoid the phenomenon that the core components are pushed into the shell from outside in the traditional manufacturing method, so that the core components are easy to deform, the inner wall of the shell can be scratched, the scraped slag falls into the shell to cause abnormal sound in the shell, meanwhile, the core components are installed by adopting a ridge process, the condition that the use of the silencer is influenced by the fact that the core components are fixed by welding and leave foreign matters such as the welded slag in the shell is fundamentally avoided, and the middle seam of the shell is sewn by adopting spot welding and straight seam welding, thereby the gas tightness of silencer can be effectively guaranteed.
Description
Technical Field
The invention relates to the technical field of automobile exhaust system silencers, in particular to a manufacturing method of an automobile silencer.
Background
An exhaust system of an automobile generally includes an exhaust pipe, a muffler, a catalytic converter, and an exhaust system mounting/fixing member. The exhaust system is mainly responsible for the treatment and control after the emission of the whole vehicle, so that the emission of the whole vehicle conforms to the regulations of relevant countries and places. Meanwhile, the exhaust system is also responsible for the important functions of controlling the exhaust back pressure and noise of the whole vehicle, a silencer in the exhaust system is a device for preventing sound transmission and allowing airflow to pass through, and is an important measure for eliminating aerodynamic noise. Therefore, the main noise reduction mode at present is to install a silencer in an exhaust pipe of an automobile engine, wherein the silencer is used for consuming airflow energy, reducing the pressure fluctuation amplitude of the airflow and playing a role in reducing noise. At present, with the stricter and stricter requirements of emission regulations, higher requirements are put on the arrangement and the use of the automobile silencer, the requirements of customers on the controllability and the comfort of the whole automobile are higher and higher, and further, the requirements on the performance of the automobile silencer in all aspects are stricter and stricter, such as noise control and the like. The silencer plays a key role in the aspects of noise control and the like of the automobile as a main part of the automobile, so that the design requirement of the automobile silencer meets the requirements of smooth exhaust, convenient installation and arrangement and good noise suppression effect on the basis of reasonable structure.
The manufacturing method of the existing silencer is mainly to assemble the core component, the core component is mostly fixed in a welding mode and prefabricated in the shell of the silencer, the middle seam formed by the rolled plate used by the shell of the silencer is sewn in a buckling seam mode or a spot welding mode, then the core component is pushed into the shell, and the two ends of the shell are sealed through end covers, so that the silencer is formed. Make the silencer can produce the abnormal sound when using to influence the use and the life-span of silencer, and the centre joint of casing often adopts detain the mode of seam and sew up with the mode of rolling up spot welding, these two kinds of modes can make casing centre joint department produce great arch, when carrying out the shutoff through the closing cap to the casing both ends, make the unable complete laminating of arch of sewing up of closing cap and centre joint, produce the gap easily, thereby have the condition of gas leakage, can influence the quality of silencer.
Disclosure of Invention
The invention aims to solve the technical problem of providing a manufacturing method of an automobile silencer, which can avoid the situation that the core component is easily deformed and scratches the inner wall of a shell to cause abnormal sound in the shell when the scraped slag falls into the shell in the traditional manufacturing method because the core component is pushed into the shell from the outside, and the core component is installed by adopting a ridge process, so that the situation that the use of the silencer is influenced because the core component is fixed by welding and remains foreign matters such as welding slag in the shell is fundamentally avoided, and the middle seam of the shell is sewn by adopting spot welding and straight seam welding, so that the air tightness of the silencer can be effectively ensured.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a manufacturing method of an automobile silencer comprises the steps of preforming a shell of the silencer, assembling core components of the silencer, putting the assembled core components into the shell, sewing middle seams of the shell, and plugging two ends of the shell by using end covers, so that the automobile silencer is formed, and specifically comprises the following steps:
A. preforming of the housing of the muffler: preparing a plate material for manufacturing a shell, and then carrying out a rounding treatment on the plate material, wherein the opposite two sides of the plate material can form a middle seam after being rounded, so that the plate material is preformed into the shape of the shell of the silencer;
B. assembling the core assembly: assembling the first inner baffle, the second inner baffle, the third inner baffle, the first silencing pipe, the second silencing pipe and the third silencing pipe, and coating silencing cotton on the core component after the assembly is finished so as to form the core component of the silencer;
C. assembling the muffler: putting the core component into a preformed shell, sewing the middle seam of the shell, firstly fixing the middle seam by spot welding, then sewing the middle seam of the shell by straight seam welding, and then plugging end covers on two ends of the shell, thereby assembling the silencer;
D. and (3) air tightness detection: after compressed air of 29.4KPa was supplied from the inlet of the first muffling tube and maintained for 30 seconds, the remaining air pressure was measured to perform airtightness testing.
Preferably, when the core assembly is assembled, the first and second muffling pipes are installed and fixed between the first, second and third inner partitions by a ridge process, and the third muffling pipe is installed and fixed between the first and second inner partitions by the ridge process.
Preferably, when the core assembly is coated with the silencing cotton, the silencing cotton is uniformly wound outside the first silencing pipe, the second silencing pipe and the third silencing pipe between the first inner partition and the second inner partition, when the core assembly is coated with the silencing cotton, the silencing cotton is closely attached to the first inner partition and the second inner partition on two sides, and after the silencing cotton is coated, the thickness of the silencing cotton layer does not exceed the outer edges of the first inner partition and the second inner partition of the core assembly.
Preferably, when the centre joint to the casing carries out spot welding fixedly, carry out spot welding fixed operation through the spot welder, what adopted is that argon arc welds the welding mode, and welding current is: 110-180A, the voltage is: 16-25V, the gas flow is as follows: 8-15L/Min.
Preferably, when carrying out the transversal joint welding seam to the centre joint of casing and sewing up, carry out the transversal joint through the transversal joint welding machine and sew up the operation, what adopted is argon arc welding mode, and welding current is: 110-180A, the voltage is: 16-25V, the gas flow is as follows: 8-15L/Min.
Preferably, when the two ends of the shell are plugged through the end covers, the two ends of the shell are firstly turned over, and then the end covers are pressed into the shell through an end biting machine, so that the two ends of the shell are plugged.
Compared with the prior art, the manufacturing method of the automobile muffler has the beneficial effects that:
1. the shell of the silencer is preformed, the plate is preformed into the shape of the shell of the silencer, then the core component is placed into the preformed shell, and then the middle seam of the shell is sewn, so that the core component is conveniently placed, the situation that the core component is easily deformed when being pushed into the shell can be avoided, the situation that the inner wall of the shell is scratched when the core component is pushed into the shell can be avoided, and the situation that the use of the silencer is affected by the scraping slag falling from the inner wall of the shell is avoided;
2. the first silencing pipe, the second silencing pipe and the first inner baffle, the second inner baffle and the third inner baffle in the core component are assembled by adopting a ridge process, and meanwhile, the third silencing pipe, the first inner baffle and the second inner baffle are also assembled by adopting the ridge process, so that the core component is assembled by the ridge process, the mounting stability of the core component can be ensured, and foreign matters such as welding slag and the like cannot be generated to influence the use of the silencer;
3. the centre joint of casing adopts the spot welding to fix, and sew up through the longitudinal welding, thereby can guarantee that the surface of casing is level and smooth, can not make casing centre joint department produce great arch, when carrying out the shutoff to the casing both ends, can guarantee that the end cover can laminate with the surface at casing both ends completely, can not produce the gap, thereby avoid the end cover at casing both ends and the junction of casing to have the condition of gas leakage, can guarantee that the silencer has good gas tightness, thereby guarantee the quality of silencer.
Drawings
FIG. 1 is a schematic structural view of an automotive muffler;
FIG. 2 is a flow chart of a method for manufacturing the muffler of the automobile according to the present invention.
In the figure, 1-shell, 2-end cover, 3-first inner baffle, 4-second inner baffle, 5-third inner baffle, 6-first silencing pipe, 7-second silencing pipe, 8-third silencing pipe and 9-silencing cotton.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, an automobile muffler comprises a housing 1, a first inner partition 3, a second inner partition 4, a third inner partition 5, a first muffler pipe 6, a second muffler pipe 7, and a third muffler pipe 8, which are installed in the housing 1, wherein the housing 1 is an installation main body of the muffler, the three inner partitions can be made of metal materials, the first inner partition 3, the second inner partition 4, and the third inner partition 5 are installed inside the housing 1 in a stable manner in sequence, the distance between the three can be adjusted appropriately according to the length of the muffler pipes, end caps 2 are respectively and fixedly installed at two ends of the housing 1, the housing 1 is divided into four muffler chambers by the first inner partition 3, the second inner partition 4, the third inner partition 5, and the end caps 2 at the two ends, one end of the first muffler pipe 6 sequentially penetrates through the end cap 2 at one end of the housing 1, the first inner partition 3, the second inner partition 4, and the third inner partition 5 and extends into the housing 1, one end of the second muffling pipe 7 sequentially penetrates through the end cover 2 at the other end of the shell 1, the third inner partition 5, the second inner partition 4 and the first inner partition 3 extend into the shell 1, the third muffling pipe 8 is arranged in the shell 1, one end of the third muffling pipe penetrates through the first inner partition 3, the other end of the third muffling pipe penetrates through the second inner partition 4, muffling cotton 9 is coated between the first inner partition 3 and the second inner partition 4, and namely, one section of the first muffling pipe 6, the second muffling pipe 7 and one section of the third muffling pipe 8 between the first inner partition 3 and the second inner partition 4 are coated with the muffling cotton 9.
As shown in fig. 1 and 2, the method for manufacturing an automobile muffler according to the present invention includes performing a pre-forming process on a shell 1 of the muffler, assembling a core assembly of the muffler, placing the assembled core assembly into the shell 1, sewing a center seam of the shell 1, and sealing two ends of the shell 1 with end caps 2, so as to form the automobile muffler, which specifically includes the following steps: A. preforming of the housing 1 of the muffler: preparing a plate material for manufacturing the shell 1, and then carrying out a rolling treatment on the plate material, wherein the opposite two sides of the plate material can form a middle seam after rolling, so that the plate material is preformed into the shape of the silencer shell 1; B. assembling the core assembly: assembling a first inner baffle 3, a second inner baffle 4, a third inner baffle 5, a first silencing pipe 6, a second silencing pipe 7 and a third silencing pipe 8, and coating silencing cotton 9 on a core component after the assembly is finished so as to form the core component of the silencer; C. assembling the muffler: putting the core component into a preformed shell 1, sewing the middle seam of the shell 1, firstly fixing the middle seam by spot welding, then sewing the middle seam of the shell by straight seam welding, and then plugging end covers 2 at two ends of the shell, thereby assembling the silencer; D. and (3) air tightness detection: after compressed air of 29.4KPa was supplied from the inlet of the first muffling tube and maintained for 30 seconds, the remaining air pressure was measured to perform airtightness testing.
As shown in fig. 1 and 2, in a method of manufacturing an automobile muffler according to the present invention, when assembling a core assembly, a first muffler pipe 6 and a second muffler pipe 7 are installed between a first inner partition 3, a second inner partition 4, and a third inner partition 5 and are fixedly installed through a ridge process, a third muffler pipe 8 is installed between the first inner partition 3 and the second inner partition 4 and is fixedly installed through a ridge process, the first muffler pipe 6 and the second muffler pipe 7 are ridge-processed at positions penetrating the first inner partition 3, the second inner partition 4, and the third inner partition 5, the first muffler pipe 6 and the second muffler pipe 7 are fixed to the first inner partition 3, the second inner partition 4, and the third inner partition 5, the third muffler pipe 8 is ridge-processed at positions penetrating the first inner partition 3 and the second inner partition 4, make third muffler pipe 8 fix on first inner baffle 3 and second inner baffle 4 to need not fix baffle and muffler pipe through the welded mode, thereby not only can guarantee the installation steadiness of core subassembly, still can not produce the use that foreign matter such as welding slag influences the silencer simultaneously. When the core component is coated with the silencing cotton 9, the silencing cotton 9 is uniformly wound outside the first silencing pipe 6, the second silencing pipe 7 and the third silencing pipe 8 between the first inner partition plate 3 and the second inner partition plate 4, the silencing cotton 9 is tightly attached to the first inner partition plate 3 and the second inner partition plate 4 on two sides when the silencing cotton 9 is coated, and after the silencing cotton 9 is coated, the thickness of a silencing cotton layer does not exceed the outer edges of the first inner partition plate and the second inner partition plate of the core component, so that the silencing effect of the silencing pipe can be improved. When the centre joint to casing 1 carries out spot welding fixedly, carry out spot welding fixed operation through the spot welder, what adopted is that argon arc welds the welding mode, and welding current is: 110-180A, the voltage is: 16-25V, the gas flow is as follows: 8-15L/Min. When carrying out the transversal joint welding seam to the centre joint of casing 1 and sewing up, carry out the transversal joint through the transversal joint welding machine and sew up the operation, what adopted is argon arc welding mode, and welding current is: 110-180A, the voltage is: 16-25V, the gas flow is as follows: 8-15L/Min, it sews up to be convenient for carry out the transversal joint welding after fixing the centre joint of casing like this, through the mode of transversal joint welding behind the spot welding, can guarantee that the surface of casing is level and smooth, when carrying out the shutoff to casing both ends, can guarantee that the end cover can laminate with the surface at casing both ends completely, can not produce the gap to avoid the end cover at casing both ends and the junction of casing to have the condition of gas leakage, can guarantee that the silencer has good gas tightness. When the two ends of the shell 1 are plugged through the end covers 2, the two ends of the shell 1 are firstly overturned, and then the end covers 2 are pressed into the shell 1 through an end biting machine, so that the two ends of the shell 1 are plugged. Therefore, the end covers can be completely attached to the outer surfaces of the two ends of the shell, no gap is generated, and the integral air tightness of the silencer is guaranteed.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (6)
1. The manufacturing method of the automobile muffler is characterized by comprising the following steps: the method comprises the following steps of preforming a shell (1) of the muffler, assembling a core component of the muffler, putting the assembled core component into the shell (1), sewing the middle seam of the shell (1), and plugging two ends of the shell (1) by using an end cover (2) to form the automobile muffler, wherein the method specifically comprises the following steps:
A. preforming of the housing (1) of the muffler: preparing a plate material for manufacturing the shell (1), and then carrying out a rolling treatment on the plate material, wherein the opposite two sides of the plate material can form a middle seam after rolling, so that the plate material is preformed into the shape of the silencer shell (1);
B. assembling the core assembly: assembling a first inner baffle (3), a second inner baffle (4), a third inner baffle (5), a first silencing pipe (6), a second silencing pipe (7) and a third silencing pipe (8), and coating silencing cotton (9) on a core component after the assembly is finished so as to form the core component of the silencer;
C. assembling the muffler: putting the core component into a preformed shell (1), sewing the middle seam of the shell (1), firstly fixing the middle seam by spot welding, then sewing the middle seam of the shell by straight seam welding, and then plugging end covers (2) at two ends of the shell, thereby assembling the silencer;
D. and (3) air tightness detection: after compressed air of 29.4KPa was supplied from the inlet of the first muffling tube and maintained for 30 seconds, the remaining air pressure was measured to perform airtightness testing.
2. The method for manufacturing an automobile muffler according to claim 1, wherein: when the core component is assembled, the first silencing pipe (6) and the second silencing pipe (7) are arranged among the first inner baffle (3), the second inner baffle (4) and the third inner baffle (5) and are fixedly arranged through a ridge process, and the third silencing pipe (8) is arranged between the first inner baffle (3) and the second inner baffle (4) and is fixedly arranged through the ridge process.
3. The method for manufacturing an automobile muffler according to claim 1, wherein: when the core component is coated with the silencing cotton (9), the silencing cotton (9) is uniformly wound outside a first silencing pipe (6), a second silencing pipe (7) and a third silencing pipe (8) between a first inner baffle (3) and a second inner baffle (4), the silencing cotton (9) is tightly attached to the first inner baffle (3) and the second inner baffle (4) on two sides when the silencing cotton (9) is coated, and the thickness of a silencing cotton layer cannot exceed the outer edges of the first inner baffle and the second inner baffle of the core component after the silencing cotton (9) is coated.
4. The method for manufacturing an automobile muffler according to claim 1, wherein: when the centre joint to casing (1) is fixed in spot welding, carry out spot welding fixed operation through the spot welder, what adopted is that argon arc welds the welding mode, and welding current is: 110-180A, the voltage is: 16-25V, the gas flow is as follows: 8-15L/Min.
5. The method for manufacturing an automobile muffler according to claim 1, wherein: when carrying out the transversal joint welding seam to the centre joint of casing (1), carry out the transversal joint through the transversal joint welding machine and sew up the operation, what adopted is the argon arc welding mode, and welding current is: 110-180A, the voltage is: 16-25V, the gas flow is as follows: 8-15L/Min.
6. The method for manufacturing an automobile muffler according to claim 1, wherein: when the two ends of the shell (1) are plugged through the end covers (2), the two ends of the shell (1) are overturned, and then the end covers (2) are pressed into the shell (1) through an end biting machine, so that the two ends of the shell (1) are plugged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911126117.3A CN110814659A (en) | 2019-11-18 | 2019-11-18 | Manufacturing method of automobile silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911126117.3A CN110814659A (en) | 2019-11-18 | 2019-11-18 | Manufacturing method of automobile silencer |
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| Publication Number | Publication Date |
|---|---|
| CN110814659A true CN110814659A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911126117.3A Pending CN110814659A (en) | 2019-11-18 | 2019-11-18 | Manufacturing method of automobile silencer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111168337A (en) * | 2020-03-06 | 2020-05-19 | 苏州事达同泰汽车零部件有限公司 | Manufacturing method of commercial vehicle exhaust pipe |
| CN113909817A (en) * | 2021-10-19 | 2022-01-11 | 南京海特汽车部件有限公司 | Processing technology of low-smoke silencer component |
| CN115366611A (en) * | 2022-08-24 | 2022-11-22 | 浙江欧特立汽车空调有限公司 | Silencer for automobile air conditioner and production method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111168337A (en) * | 2020-03-06 | 2020-05-19 | 苏州事达同泰汽车零部件有限公司 | Manufacturing method of commercial vehicle exhaust pipe |
| CN113909817A (en) * | 2021-10-19 | 2022-01-11 | 南京海特汽车部件有限公司 | Processing technology of low-smoke silencer component |
| CN113909817B (en) * | 2021-10-19 | 2024-03-19 | 南京海特汽车部件有限公司 | Processing technology of low-smoke muffler assembly |
| CN115366611A (en) * | 2022-08-24 | 2022-11-22 | 浙江欧特立汽车空调有限公司 | Silencer for automobile air conditioner and production method thereof |
| CN115366611B (en) * | 2022-08-24 | 2023-03-21 | 浙江欧特立汽车空调有限公司 | Silencer for automobile air conditioner and production method thereof |
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