CN110985181A - Pipeline heat shield structure of automobile exhaust system and machining process thereof - Google Patents
Pipeline heat shield structure of automobile exhaust system and machining process thereof Download PDFInfo
- Publication number
- CN110985181A CN110985181A CN201911191036.1A CN201911191036A CN110985181A CN 110985181 A CN110985181 A CN 110985181A CN 201911191036 A CN201911191036 A CN 201911191036A CN 110985181 A CN110985181 A CN 110985181A
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- half shell
- heat
- heat insulation
- insulating
- connector
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- 238000003754 machining Methods 0.000 title abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 53
- 238000005520 cutting process Methods 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 13
- 238000009966 trimming Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 7
- 238000004080 punching Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000005267 amalgamation Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000000109 continuous material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
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Classifications
-
- 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
- F01N13/14—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 having thermal insulation
-
- 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
Abstract
The invention discloses a pipeline heat shield structure of an automobile exhaust system, which comprises a first heat-insulating half shell and a second heat-insulating half shell which are both in a half-pipe shape, wherein the first heat-insulating half shell and the second heat-insulating half shell are spliced with each other to form a heat shield in a bent pipe shape, a heat-insulating coating is coated on the heat shield, and the heat shield comprises a first connecting port and a second connecting port; the first half shell that insulates against heat is interior knot scrap (bridge) for two concatenation edges corresponding to first connector and second connector, the second is insulated against heat and is half shell and is corresponding to two concatenation edges of first connector and second connector and for outer knot scrap (bridge), outer knot scrap (bridge) is detained and is established interior knot scrap (bridge) outside. Through the structural mode of the mutual concatenation combination of the first thermal-insulated half shell and the second thermal-insulated half shell, on the one hand, the installation that separates heat exchanger and can be quick and convenient, the aesthetic property is stronger, and on the other hand, the structure of two half shells is easily contour machining, promotes processing production efficiency.
Description
Technical Field
The invention belongs to the field of automobile exhaust, and particularly relates to a pipeline heat shield structure of an automobile exhaust system and a processing technology thereof.
Background
An automobile exhaust system is an important system component of an automobile engine in the working process, a heat insulation piece needs to be installed on an exhaust pipe in the exhaust system to insulate the exhaust pipe, the influence of exhaust heat on working components such as the engine is reduced, however, most of the existing heat insulation modes adopt materials such as heat insulation cotton, the installation is unstable, the installation is not easy, and the attractiveness is poor.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the pipeline heat shield structure of the automobile exhaust system and the processing technology thereof.
The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the invention is as follows:
the pipeline heat shield structure of the automobile exhaust system comprises a first heat shield half shell and a second heat shield half shell which are both in a half-pipe shape, wherein the first heat shield half shell and the second heat shield half shell are spliced with each other to form a heat shield in a bent pipe shape, a heat insulating coating is coated on the heat shield, and the heat shield comprises a first connecting port and a second connecting port; the first half shell that insulates against heat is interior knot scrap (bridge) for two concatenation edges corresponding to first connector and second connector, the second is insulated against heat and is half shell and is corresponding to two concatenation edges of first connector and second connector and for outer knot scrap (bridge), outer knot scrap (bridge) is detained and is established interior knot scrap (bridge) outside.
Furthermore, two inner buckle scrap edges corresponding to the first connecting port or the second connecting port elastically deform towards the outer side of the concave cambered surface to form a flaring shape, and two outer buckle scrap edges corresponding to the first connecting port or the second connecting port elastically deform towards the inner side of the concave cambered surface to form an inner contracting shape.
Furthermore, the first heat insulation half shell is provided with an extension piece on a splicing side edge corresponding to the first connecting port, and the extension piece is obliquely arranged towards the inner cavity of the heat insulation cover.
Furthermore, the outer buckle lap is of an L-shaped shoulder-shaped structure, and the splicing edge of the second heat insulation half shell is an L-shaped shoulder-shaped structure.
Furthermore, the first connecting port and the second connecting port are both circular-section pipe orifices.
Furthermore, the second heat insulation half shell is communicated with the first connecting port and provided with a U-shaped through groove.
Furthermore, a communicating hole is formed in the second heat insulation half shell in a penetrating mode.
A processing technology of a pipeline heat shield structure of an automobile exhaust system comprises the following steps:
s1: blanking: the first connecting ports of the first heat-insulating half shell and the second heat-insulating half shell are oppositely arranged in an arranging mode, the first heat-insulating half shell and the second heat-insulating half shell are processed in a connecting mode, the same blanking piece is used together, and the sample arrangement mode is a direct-row continuous sample arrangement mode;
s2: molding surface molding: performing primary drawing forming on the blanking sheet obtained in the step S1 through a forming die, drawing the integral molded surfaces of the first heat insulation half shell and the second heat insulation half shell to form a first connecting port and a second connecting port of the first heat insulation half shell and the second heat insulation half shell, wherein the first connecting ports of the first heat insulation half shell and the second heat insulation half shell are in an integral butt joint state;
s3: trimming and finishing: cutting off the outer contour edge of the drawn part obtained in the step S2 and the redundant excess material at the bending part through a trimming die;
s4: cutting: cutting the drawn part obtained in the step S3 along the middle by a cutting die to form a first heat insulation half shell and a second heat insulation half shell;
s5: flanging: flanging the plate materials on the first heat insulation half shell and the second heat insulation half shell corresponding to the extending pieces through a flanging die;
s6: side cutting: performing side cutting trimming on the first heat insulation half shell in the step S5 through a side cutting die, and cutting off the flanging of the second heat insulation half shell; meanwhile, the excess material of the outward-bent splicing edge is cut off and trimmed again;
s7: and (2) side cutting: performing excess material cutting and trimming on the inner-bending side splicing edges of the first heat-insulating half shell and the second heat-insulating half shell in the step S6, and simultaneously performing blanking forming on the through groove of the second heat-insulating half shell to obtain a completely-formed first heat-insulating half shell;
s8: punching: and (4) punching a communicating hole on the second heat insulation half shell in the step (7) to obtain a completely formed second heat insulation half shell.
Has the advantages that: according to the invention, through the structural mode that the first heat insulation half shell and the second heat insulation half shell are spliced and combined with each other, on one hand, the heat insulation cover can be quickly and conveniently installed, the attractiveness is strong, on the other hand, the structures of the two half shells are easy to form and process, and the processing production efficiency is improved.
Drawings
FIG. 1 is a perspective view of a first insulated half shell and a second insulated half shell of the present invention;
FIG. 2 is a perspective view of a first insulated half shell of the present invention;
FIG. 3 is a perspective view of a second insulated half shell of the present invention;
FIG. 4 is a schematic diagram of a blanking sheet structure in the processing technology of the present invention;
FIG. 5 is a state diagram of a molding surface in the process of the present invention;
FIG. 6 is a view showing the state of trimming in the process of the present invention;
FIG. 7 is a cut-open state diagram of the continuous material in the process of the present invention;
FIG. 8 is a state diagram of a turning plate in the processing technology of the invention;
FIG. 9 is a side cut state diagram of the process of the present invention;
FIG. 10 is a side cut two-state diagram in the process of the present invention;
FIG. 11 is a punching state diagram in the processing technology of the invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-3, a thermal-insulated cover structure of pipeline of automobile exhaust system, including the first thermal-insulated half shell 1 and the thermal-insulated half shell 2 of second that all are half tube body form, first thermal-insulated half shell 1 sets up the thermal-insulated cover that forms the return bend tube body with the mutual amalgamation of the thermal-insulated half shell 2 of second, and it is used for the return bend turn department of blast pipe, because slow down at return bend department air current velocity, heat concentration, the heat of outdiffusion increases relatively, insulates against heat the blast pipe through thermal-insulated cover, and the coating has thermal-insulated coating on the thermal-insulated cover to insulate against heat, thermal-insulated cover contains first connector 3 and second connector 4 to be used for installing thermal-insulated cover in the blast pipe outside, form behind the amalgamation first connector 3 and second connector 4 are the circular cross section mouth of.
First thermal-insulated half shell 1 is detained scrap (bridge) 8 for interior knot corresponding to two concatenation edges of first connector 3 and second connector 4, second thermal-insulated half shell 2 is detained scrap (bridge) 9 for outer knot corresponding to two concatenation edges of first connector 3 and second connector 4, outer knot scrap (bridge) 9 is detained and is established interior knot scrap (bridge) 8 outsides to make the concatenation of first thermal-insulated half shell and the thermal-insulated half shell of second, rethread welding makes two thermal-insulated half shells stably connected together, through the structural style of the mutual concatenation combination of first thermal-insulated half shell and the thermal-insulated half shell of second, on the one hand, the installation that separates heat exchanger and can be quick and convenient, the aesthetic property is stronger, on the other hand, the structure of two halves shell type is easily contour machining, promotes processing production efficiency.
Correspond to two of first connector 3 or second connector 4 department interior knot scrap (bridge) 8 forms the flaring form to the outside elastic deformation of concave cambered surface, is corresponding to two of first connector 3 or second connector 4 department outer knot scrap (bridge) 9 forms the form that contracts in to the inboard elastic deformation of concave cambered surface, outer knot scrap (bridge) 9 is the amalgamation edge of the thermal-insulated half shell 1 of second and is L type circular bead column structure. Through the amalgamation mouth of the form of contracting inwards and flaring form, when the amalgamation, can make first thermal-insulated half shell 1 and second thermal-insulated half shell 2 remain stable, do benefit to the welding operation of epilogue.
First thermal-insulated half shell 1 is provided with extension piece 11 on corresponding to a concatenation arris of first connection mouth 3 respectively, extension piece 11 sets up to the inner chamber slope that separates the heat exchanger, and to the thermal-insulated half shell 2 slope setting of second, when installing first thermal-insulated half shell 1 and the thermal-insulated half shell 2 of second on exhaust duct, through extending piece 11, can increase the clamp force that separates heat exchanger and blast pipe, guarantees the stability of connecting.
The first connecting port 3 of intercommunication has seted up U type through groove 12 on the thermal-insulated half shell 2 of second, U type through groove 12 is used for keeping away the position, link up on the thermal-insulated half shell 2 of second and seted up the intercommunicating pore 13 for connect other pipelines.
As shown in fig. 4 to 11, a process for manufacturing a pipe heat shield structure of an automobile exhaust system includes the following steps:
s1: blanking: the first connecting ports 3 of the first heat-insulating half shell 1 and the second heat-insulating half shell 1 are oppositely arranged, the first heat-insulating half shell 1 and the second heat-insulating half shell 2 are processed in a connecting mode, the same blanking piece is used together, and the sample arrangement mode is a direct-row continuous sample arrangement mode;
s2: molding surface molding: performing primary drawing forming on the blanking sheet obtained in the step S1 through a forming die, drawing out integral molded surfaces of the first heat-insulating half shell 1 and the second heat-insulating half shell 2, and forming a first connecting port and a second connecting port of the first heat-insulating half shell 1 and the second heat-insulating half shell 2, wherein the first connecting ports of the first heat-insulating half shell 1 and the second heat-insulating half shell 2 are in an integral butt joint state;
s3: trimming and finishing: cutting off the outer contour edge of the drawn part obtained in the step S2 and the redundant excess material at the bending part through a trimming die;
s4: cutting: cutting the drawn part obtained in step S3 along the middle by a cutting die to form a first insulated half shell 1 and a second insulated half shell 2;
s5: flanging: flanging the plate materials corresponding to the extending pieces 11 on the first heat insulation half shell 1 and the second heat insulation half shell 2 through flanging dies;
s6: side cutting: performing side cutting trimming on the first heat-insulating half shell 1 in the step S5 through a side cutting die, and cutting off the flanging of the second heat-insulating half shell 2; meanwhile, the excess material of the outward-bent splicing edge is cut off and trimmed again;
s7: and (2) side cutting: performing excess material cutting and trimming on the inner-bent side splicing edges of the first heat-insulating half shell 1 and the second heat-insulating half shell 2 in the step S6, and simultaneously performing blanking forming on the through groove 12 of the second heat-insulating half shell 2 to obtain a completely formed first heat-insulating half shell 1;
s8: punching: and (3) punching the communicating hole 13 of the second heat-insulating half shell 2 in the step (7) to obtain the completely formed second heat-insulating half shell 2.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. The utility model provides a pipeline separates heat exchanger structure of automobile exhaust system which characterized in that: the heat insulation device comprises a first heat insulation half shell (1) and a second heat insulation half shell (2) which are both in a half-pipe shape, wherein the first heat insulation half shell (1) and the second heat insulation half shell (2) are spliced with each other to form a heat insulation cover in a bent pipe shape, a heat insulation coating is coated on the heat insulation cover, and the heat insulation cover comprises a first connecting port (3) and a second connecting port (4); first thermal-insulated half shell (1) is detained scrap (8) for interior knot corresponding to two concatenation edges of first connector (3) and second connector (4), second thermal-insulated half shell (2) are detained scrap (9) for outer knot corresponding to two concatenation edges of first connector (3) and second connector (4), detain scrap (9) outward and detain and establish interior knot scrap (8) outside.
2. The pipe heat shield structure of an automobile exhaust system according to claim 1, characterized in that: the two corresponding to the first connector (3) or the second connector (4) are elastically deformed to the outer side of the concave arc surface to form a flaring shape, and the two corresponding to the first connector (3) or the second connector (4) are elastically deformed to the inner side of the concave arc surface to form an inward shrinking shape by the outer buckle scrap (9).
3. The pipe heat shield structure of an automobile exhaust system according to claim 2, characterized in that: the first heat insulation half shell (1) is provided with an extension piece (11) corresponding to one splicing side edge of the first connecting port (3), and the extension piece (11) is obliquely arranged towards an inner cavity of the heat insulation cover.
4. The pipe heat shield structure of an automobile exhaust system according to claim 1, characterized in that: the outer buckle lap (9) is of an L-shaped shoulder-shaped structure, and the splicing edge of the second heat insulation half shell (1).
5. The pipe heat shield structure of an automobile exhaust system according to claim 1, characterized in that: the first connecting port (3) and the second connecting port (4) are both circular-section pipe orifices.
6. The pipe heat shield structure of an automobile exhaust system according to claim 1, characterized in that: the second heat insulation half shell (2) is communicated with the first connecting port (3) and is provided with a U-shaped through groove (12).
7. The pipe heat shield structure of an automobile exhaust system according to claim 1, characterized in that: and a communicating hole (13) is formed in the second heat insulation half shell (2) in a penetrating way.
8. The process for manufacturing a pipe heat shield structure of an automobile exhaust system according to any one of claims 1 to 7, wherein: the method comprises the following steps:
s1: blanking: the first connecting ports (3) of the first heat-insulating half shell (1) and the second heat-insulating half shell (1) are oppositely arranged, the first heat-insulating half shell (1) and the second heat-insulating half shell (2) are processed in a connecting mode, the same blanking piece is used together, and the sample arrangement mode is a direct-row continuous sample arrangement mode;
s2: molding surface molding: performing primary drawing forming on the blanking sheet obtained in the step S1 through a forming die, drawing the integral molded surfaces of the first heat insulation half shell (1) and the second heat insulation half shell (2), forming a first connecting port and a second connecting port of the first heat insulation half shell (1) and the second heat insulation half shell (2), wherein the first connecting ports of the first heat insulation half shell (1) and the second heat insulation half shell (2) are in an integral butt joint state;
s3: trimming and finishing: cutting off the outer contour edge of the drawn part obtained in the step S2 and the redundant excess material at the bending part through a trimming die;
s4: cutting: cutting the drawn part obtained in the step S3 along the middle by a cutting die to form a first heat insulation half shell (1) and a second heat insulation half shell (2);
s5: flanging: flanging the plate materials corresponding to the extending pieces (11) on the first heat insulation half shell (1) and the second heat insulation half shell (2) through flanging dies;
s6: side cutting: performing side cutting trimming on the first heat insulation half shell (1) in the step S5 through a side cutting die, and cutting off the flanging of the second heat insulation half shell (2); meanwhile, the excess material of the outward-bent splicing edge is cut off and trimmed again;
s7: and (2) side cutting: performing excess material cutting and trimming on the inner bent side splicing edges of the first heat-insulating half shell (1) and the second heat-insulating half shell (2) in the step S6, and simultaneously performing blanking forming on the through groove (12) of the second heat-insulating half shell (2) to obtain a completely formed first heat-insulating half shell (1);
s8: punching: and (3) punching the communicating hole (13) of the second heat-insulating half shell (2) in the step (7) to obtain the completely formed second heat-insulating half shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911191036.1A CN110985181A (en) | 2019-11-28 | 2019-11-28 | Pipeline heat shield structure of automobile exhaust system and machining process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911191036.1A CN110985181A (en) | 2019-11-28 | 2019-11-28 | Pipeline heat shield structure of automobile exhaust system and machining process thereof |
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| CN110985181A true CN110985181A (en) | 2020-04-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160853A (en) * | 2020-08-05 | 2021-01-01 | 江苏博纳汽车零部件有限公司 | In-cylinder direct injection engine air inlet pipe and preparation method thereof |
| CN112705623A (en) * | 2020-12-08 | 2021-04-27 | 无锡曙光模具有限公司 | Machining die and machining process for automobile heat shield |
| CN113369386A (en) * | 2021-06-22 | 2021-09-10 | 烟台亿众智能科技有限公司 | Preforming processing method for supercharger heat shield |
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2019
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| JP2004360501A (en) * | 2003-06-03 | 2004-12-24 | Sango Co Ltd | Mounting structure of thermal insulation cover |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112160853A (en) * | 2020-08-05 | 2021-01-01 | 江苏博纳汽车零部件有限公司 | In-cylinder direct injection engine air inlet pipe and preparation method thereof |
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| CN113369386A (en) * | 2021-06-22 | 2021-09-10 | 烟台亿众智能科技有限公司 | Preforming processing method for supercharger heat shield |
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