CN103691810B - The drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system - Google Patents

The drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system Download PDF

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Publication number
CN103691810B
CN103691810B CN201310584098.5A CN201310584098A CN103691810B CN 103691810 B CN103691810 B CN 103691810B CN 201310584098 A CN201310584098 A CN 201310584098A CN 103691810 B CN103691810 B CN 103691810B
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China
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die
bolster
holding pad
shell
molding concave
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CN201310584098.5A
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CN103691810A (en
Inventor
白瑛
曹一枢
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Wuxi Dawn Die and Stamping Co Ltd
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Wuxi Dawn Die and Stamping Co Ltd
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Abstract

The invention provides the drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system, it can solve the problem that surface of the work after the even material integrated punching molding of current upper half shell and lower half shell is wrinkling in a large number.It includes upper die structure and lower die structure, upper die structure includes cope match-plate pattern and molding concave die, molding concave die is installed under described cope match-plate pattern, lower die structure includes lower bolster, holding pad and forming convax mould, lower bolster is installed on lower installation board by counterdie foot, holding pad is installed on lower bolster by lower bolster, forming convax mould is installed on holding pad, upper die structure and lower die structure roll guide guiding matched moulds by independent, it is characterised in that: holding pad is interior, be positioned at the both lateral sides of forming convax mould, longitudinal both sides are respectively symmetrically and are provided with calendering mold insert.

Description

The drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system
Technical field
The present invention relates to the punch process field of automotive engine component, be specially the drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system.
Background technology
A kind of air outlet taper pipe shell of automobile engine exhaust system, its structure is shown in Fig. 1, it is applied to automobile engine exhaust system hot junction, during installation one end be connected with purifier carrier, the Flange joint of the other end and engine side, its parts precision requires height, these parts mostly were stainless steel precision castings in the past, and therefore its processing cost height and working (machining) efficiency are low.In order to reduce the processing cost of these parts and improve working (machining) efficiency, now progressively adopt the method for punch process to produce this parts, construction features according to these parts, these parts are divided into upper half shell 22 and lower half shell 23 by punch process, see Fig. 2 and Fig. 3, the process route of its punch process is first distinguish punch forming upper half shell and lower half shell, it is welded into entirety again after upper half shell and lower half shell split, in Fig. 1, 24 is the welded seam of upper half shell 22 and lower half shell 23, in order to reduce manufacturing procedure, improve working (machining) efficiency, the drawing and forming of upper half shell and lower half shell adopts the method even expecting integrated punching drawing and forming, but after upper half shell and lower half shell company material are integrally washed into type, surface of the work can be wrinkling in a large number, thus have a strong impact on crudy.In Fig. 2,25 is the big opening end of upper half shell, 26 is the osculum end of upper half shell, 27 is the big opening end of lower half shell, 28 is the osculum end of lower half shell, when upper half shell 22 and lower half shell 23 split, the big opening end 25 of upper half shell and big opening end 27 split of lower half shell, upper half shell osculum end 28 split of osculum end 26 and lower half shell.
Summary of the invention
For the problems referred to above, the invention provides the drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system, it can solve the problem that surface of the work after the even material integrated punching molding of current upper half shell and lower half shell is wrinkling in a large number.
Its technical scheme is such, it includes upper die structure and lower die structure, described upper die structure includes cope match-plate pattern and molding concave die, described molding concave die is installed under described cope match-plate pattern, described lower die structure includes lower bolster, holding pad and forming convax mould, described lower bolster is installed on described lower installation board by counterdie foot, described holding pad is installed on described lower bolster by lower bolster, described forming convax mould is installed on described holding pad, described upper die structure rolls guide guiding matched moulds with lower die structure by independent, it is characterized in that: in described holding pad, it is positioned at the both lateral sides of described forming convax mould, longitudinal both sides are respectively symmetrically and are provided with calendering mold insert.
It is further characterized by
On described lower bolster, the both lateral sides end that is positioned at described holding pad be separately installed with guide stop block, described lower bolster, holding pad, molding concave die transverse ends have Baltimore groove from bottom to top, described guide stop block is embedded in described lower bolster and in the Baltimore groove of holding pad, is also embedded in the described Baltimore groove of described molding concave die with guide stop block described in lower die structure matched moulds process at upper die structure;
Being installed with push rod in described forming convax mould, described push rod, downward through connecting nitrogen spring after described lower bolster, lower bolster, is fixed on lower installation board by fastening bolt bottom described nitrogen spring;
Being provided with ejector pin in described molding concave die, described ejector pin upper end is connected with described cope match-plate pattern by Rectangular Spring;
Under described cope match-plate pattern, on lower bolster, correspondence is provided with limited post respectively.
The drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system of the present invention, holding pad is interior, be positioned at the both lateral sides of described forming convax mould, longitudinal both sides are respectively symmetrically and are provided with calendering mold insert, pressor unit mold insert is formed in the incipient stage of workpiece drawing and forming and delays muscle, thus effectively preventing surface of the work wrinkling;In upper die structure with lower die structure matched moulds process, guide stop block coordinates with Baltimore groove, it is possible to ensure the reliable matched moulds of molding concave die and forming convax mould;It addition, adopt the pressure-plate-force that nitrogen spring binder can be bigger and uniform and stable, it is ensured that after stretching, workpiece size is stable thus meeting processing dimension requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of air outlet taper pipe shell of automobile engine exhaust system of inventive die processing;
Fig. 2 is the structural representation of the upper half shell of the kind air outlet taper pipe shell of automobile engine exhaust system of inventive die processing;
Fig. 3 is the structural representation of the lower half shell of the kind air outlet taper pipe shell of automobile engine exhaust system of inventive die processing;
Fig. 4 is the structural representation under inventive die matched moulds state;
Fig. 5 is the plan structure schematic diagram of lower die structure in inventive die.
Detailed description of the invention
See Fig. 4 and Fig. 5, inventive die includes upper die structure and lower die structure, upper die structure includes cope match-plate pattern 1 and molding concave die 7, molding concave die 7 is installed on cope match-plate pattern 1 time, lower die structure includes lower bolster 2, holding pad 8 and forming convax mould 9, lower bolster 2 is installed on lower installation board 3 by counterdie foot 4, holding pad 8 is installed on lower bolster 2 by lower bolster 5, forming convax mould 9 is installed on holding pad 8, upper die structure and lower die structure are led matched moulds by the independent guide 17 that rolls, in holding pad 8, it is positioned at the both lateral sides of forming convax mould 9, longitudinal both sides are respectively symmetrically and are provided with calendering mold insert 12, 11;On lower bolster 2, the both lateral sides end that is positioned at holding pad 8 be separately installed with guide stop block 6, lower bolster 5, holding pad 8, molding concave die 7 transverse ends have Baltimore groove from bottom to top, guide stop block 6 is embedded in lower bolster 5 with in the Baltimore groove of holding pad 8, and in upper die structure with lower die structure matched moulds process, guide stop block 6 is also embedded in the Baltimore groove of molding concave die 7;Being installed with push rod 13 in forming convax mould 9, push rod 13, downward through connecting nitrogen spring 18 after lower bolster 5, lower bolster 2, is fixed on lower installation board 3 by fastening bolt 21 bottom nitrogen spring 18;Being provided with ejector pin 14 in molding concave die 7, ejector pin 14 upper end is connected with cope match-plate pattern 1 by Rectangular Spring 19;On cope match-plate pattern 1 time, lower bolster 2, correspondence is provided with limited post 15 respectively.In Fig. 4,16 is the independent guide sleeve cushion block rolling guide 17, and 20 is discharging screw;In Fig. 5,10 is locating piece.

Claims (2)

1. the drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system, it includes upper die structure and lower die structure, described upper die structure includes cope match-plate pattern and molding concave die, described molding concave die is installed under described cope match-plate pattern, described lower die structure includes lower bolster, holding pad and forming convax mould, described lower bolster is installed on lower installation board by counterdie foot, described holding pad is installed on described lower bolster by lower bolster, described forming convax mould is installed on described holding pad, described upper die structure rolls guide guiding matched moulds with lower die structure by independent, it is characterized in that: in described holding pad, it is positioned at the both lateral sides of described forming convax mould, longitudinal both sides are respectively symmetrically and are provided with calendering mold insert;
On described lower bolster, the both lateral sides end that is positioned at described holding pad be separately installed with guide stop block, described lower bolster, holding pad, molding concave die transverse ends have Baltimore groove from bottom to top, described guide stop block is embedded in described lower bolster and in the Baltimore groove of holding pad, is also embedded in the described Baltimore groove of described molding concave die with guide stop block described in lower die structure matched moulds process at upper die structure;
Being installed with push rod in described forming convax mould, described push rod, downward through connecting nitrogen spring after described lower bolster, lower bolster, is fixed on lower installation board by fastening bolt bottom described nitrogen spring;
Being provided with ejector pin in described molding concave die, described ejector pin upper end is connected with described cope match-plate pattern by Rectangular Spring.
2. the drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system according to claim 1, it is characterised in that: under described cope match-plate pattern, on lower bolster, correspondence is provided with limited post respectively.
CN201310584098.5A 2013-11-20 2013-11-20 The drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system Active CN103691810B (en)

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CN201310584098.5A CN103691810B (en) 2013-11-20 2013-11-20 The drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system

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Application Number Priority Date Filing Date Title
CN201310584098.5A CN103691810B (en) 2013-11-20 2013-11-20 The drawing forming mold of air outlet taper pipe shell of automobile engine exhaust system

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CN103691810B true CN103691810B (en) 2016-07-06

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103878525B (en) * 2013-11-20 2015-12-02 无锡曙光模具有限公司 The weld jig of automobile engine exhaust system air outlet taper pipe inner casing
CN111085606B (en) * 2019-12-25 2021-06-08 上海日晗精密机械股份有限公司 Back extrusion plane forming process for end cone type part of automobile exhaust system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377084A (en) * 1980-12-29 1983-03-22 The Stolle Corporation Press apparatus having resilient stop blocks
US6772682B1 (en) * 2003-02-13 2004-08-10 The Minster Machine Company Press shutheight adjustment using bolster hydraulic tie rod assemblies
CN201034870Y (en) * 2007-04-25 2008-03-12 宝山钢铁股份有限公司 terrace die for inducing vehicle plate surface galling defect experiment and tester
CN201455084U (en) * 2009-06-13 2010-05-12 湖北通达股份有限公司 Double-layer stainless steel draw die
CN102554036A (en) * 2011-12-29 2012-07-11 无锡曙光模具有限公司 Big round mouth mould of diffuser in automobile exhaust gas recirculation system
CN203621234U (en) * 2013-11-20 2014-06-04 无锡曙光模具有限公司 Stretching die for air exhaust taper pipe outer shell of automobile engine exhaust system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377084A (en) * 1980-12-29 1983-03-22 The Stolle Corporation Press apparatus having resilient stop blocks
US6772682B1 (en) * 2003-02-13 2004-08-10 The Minster Machine Company Press shutheight adjustment using bolster hydraulic tie rod assemblies
CN201034870Y (en) * 2007-04-25 2008-03-12 宝山钢铁股份有限公司 terrace die for inducing vehicle plate surface galling defect experiment and tester
CN201455084U (en) * 2009-06-13 2010-05-12 湖北通达股份有限公司 Double-layer stainless steel draw die
CN102554036A (en) * 2011-12-29 2012-07-11 无锡曙光模具有限公司 Big round mouth mould of diffuser in automobile exhaust gas recirculation system
CN203621234U (en) * 2013-11-20 2014-06-04 无锡曙光模具有限公司 Stretching die for air exhaust taper pipe outer shell of automobile engine exhaust system

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