CN103240336A - Automobile single-action drawing die with nitrogen springs and prepressing device - Google Patents
Automobile single-action drawing die with nitrogen springs and prepressing device Download PDFInfo
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- CN103240336A CN103240336A CN2013101732750A CN201310173275A CN103240336A CN 103240336 A CN103240336 A CN 103240336A CN 2013101732750 A CN2013101732750 A CN 2013101732750A CN 201310173275 A CN201310173275 A CN 201310173275A CN 103240336 A CN103240336 A CN 103240336A
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- 239000001308 nitrogen Substances 0.000 title claims abstract description 73
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 73
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000011230 binding agents Substances 0.000 claims description 33
- 238000009434 installation Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 10
- 239000011148 porous materials Substances 0.000 claims description 10
- 239000003570 air Substances 0.000 claims description 9
- 230000037250 Clearance Effects 0.000 claims description 6
- 230000035512 clearance Effects 0.000 claims description 6
- 239000002184 metals Substances 0.000 abstract description 13
- 229910052751 metals Inorganic materials 0.000 abstract description 13
- 238000000034 methods Methods 0.000 abstract description 9
- 238000003825 pressing Methods 0.000 abstract description 7
- 239000000463 materials Substances 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000004080 punching Methods 0.000 abstract description 3
- 240000006028 Sambucus nigra Species 0.000 description 7
- 238000010009 beating Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 238000006243 chemical reactions Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000003921 oils Substances 0.000 description 2
- 238000009747 press moulding Methods 0.000 description 2
- 238000005516 engineering processes Methods 0.000 description 1
- 239000007789 gases Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- 239000011257 shell materials Substances 0.000 description 1
Abstract
Description
Technical field
The present invention relates to automobile drawing die field, particularly a kind of automobile single-action drawing die that nitrogen spring and prepressing device are installed.
Background technology
In the automobile product development process, the manufacturing of covering is the key link that body of a motor car is made.Automobile panel is the part of decorative appearance, is again the stressed part of shell shape.Any small defective all can cause the diffuse reflection of light and defeature attractive in appearance on the covering surface after japanning, so the covering surface does not allow ripple, fold, edge to draw the defective of trace and other deface aesthetic feelings.
In automobile panel, the covering of simple shape, depth as shallow generally adopts single action press to come moulding; The covering complex-shaped, that the degree of depth is dark adopts the double action press moulding.Drawing die is for the sheet metal pull and stretch being become the body of a motor car forming mould, mainly be made of punch, recessed chess and holding pad and punch holder, inside and outside guider being housed respectively between punch and holding pad, die and the holding pad.Single draw and two moving differences of drawing are, the die of single action press in the above, blank holder and punch are below.The punch of double action press in the above, blank holder is earlier moving in the time of motion, punch is moving again after the flanging.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Because the shape of vehicle body panel beating is limited by moulding or body structure, cause the profile section difference of some vehicle body sheet metal components to change greatly at pressing direction, when drawing, the die that occurs local profile easily is difficult for fitting with punch, and wrinkling takes place easily.Upper mould band material phenomenon also appears easily.
Summary of the invention
In order to solve prior art problems, the embodiment of the invention provides a kind of automobile single-action drawing die that nitrogen spring and prepressing device are installed.By nitrogen spring and binder block are set, can be implemented in the drawing process, vehicle body panel beating material is carried out precompressed in advance, alleviate or prevent that the panel beating product is wrinkling.Described technical scheme is as follows:
A kind of automobile single-action drawing die that nitrogen spring and prepressing device are installed, its single-action drawing die comprises at least: punch, die, nitrogen spring, binder block, cylinder seat; Described die is installed in the upper punch of single action press, and described punch is installed on the work top of single action press.
Particularly, described die is provided with described nitrogen spring, described binder block, and described binder block is prepressing device.
Particularly, be vertically arranged with ladder hole in the described die, described ladder hole is upper and lower two structures that shoulder hole joins, be provided with described cylinder seat in its top shoulder hole, adopt Bolt Connection or bonding, be provided with described binder block in the lower step hole, described binder block shape and shoulder hole shape match, and adopt matched in clearance.
Further, the described binder block outstanding described die bottom profile 10-20mm in bottom surface.
Particularly, described cylinder seat bottom surface is equipped with described nitrogen spring, adopts setting-in or bonding installation; Insert in the hole at described binder block top described nitrogen spring bottom, adopts matched in clearance.
Particularly, flat shape and described die baseplane shape are coincide mutually on the described punch.
Further, described die is provided with pore.
Particularly, described nitrogen spring comprises at least: maintenance screw hole, piston rod, dust ring, snap ring, sealing ring, guide way, O RunddichtringO, cylinder body, air-filled pore, sealed screw, cylinder bottom; Be provided with described guide way in the described cylinder body, described guide way is provided with described O RunddichtringO, described snap ring, described dust ring, adopts described sealing ring sealing between described snap ring, described dust ring and the described cylinder body; Described piston rod is arranged in the described guide way; Described cylinder base is provided with described air-filled pore, described sealed screw, and described cylinder bottom connects with described cylinder body.
Further, the technical parameter of described nitrogen spring: operating temperature is-6 ° of C-71 ° of C, and operating pressure is 15-150bar, and the inflation media is nitrogen; The stroke of described nitrogen spring is greater than the stretching depth 3～10mm of stamping parts.
Further, described nitrogen spring is selected quantity for use, according to the pressure of the nitrogen spring of same diameter pressure maximum divided by total operating pressure.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is:
By at die nitrogen spring and binder block being installed, the elastic force pressure of nitrogen spring acts on the binder block, in drawing process, can apply precompression to vehicle body panel beating material in advance by binder block, make the vehicle body sheet metal component can be good at fitting with punch, thereby the vehicle body sheet metal component is wrinkling when alleviating punching press, binder block can play the discharging function simultaneously, prevents patrix band material.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the installation nitrogen spring that provides of the embodiment of the invention and the automobile single-action drawing die structural representation of prepressing device;
Fig. 2 is the nitrogen spring structural representation of the automobile single-action drawing die of the installation nitrogen spring that provides of the embodiment of the invention and prepressing device.
Each symbolic representation implication is as follows among the figure:
1 punch;
2 dies, the 2-1 ladder hole;
3 nitrogen springs, 3-1 keeps in repair screw hole, 3-2 piston rod, 3-3 dust ring, 3-4 snap ring, 3-5 sealing ring, 3-6 guide way, 3-7O RunddichtringO, 3-8 cylinder body, 3-9 air-filled pore, 3-10 sealed screw, 3-11 cylinder bottom;
4 binder blocks;
5 cylinder seats.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
The reaction force that the pressure-pad-force of single action press acts on the blank holder when being descending by die provides, and therefore in automobile panel, the covering of simple shape, depth as shallow generally adopts single action press to come moulding; The covering complex-shaped, that the degree of depth is dark must adopt the double action press moulding.This is because the pressure-plate-force of single action press is to obtain by oil cylinder or air cushion below the lathe, pressure and the stroke of oil cylinder (or air cushion) are all much smaller than double action press, and it can not provide the required forming force of complicated deep-drawing spare of big pressure-plate-force and big stroke.Secondly, the holding pad of the used drawing die of single action press is thinner, rigidity relatively a little less than, also can not adapt to the moulding of complicated deep-drawing spare.
Referring to shown in Figure 1, the embodiment of the invention provides a kind of automobile single-action drawing die that nitrogen spring and prepressing device are installed, and comprises at least: punch 1, die 2, nitrogen spring 3, binder block 4, cylinder seat 5 etc.; Described die 2 is installed in the upper punch of single action press, also deserve to be called mould, described punch 1 is installed on the work top of single action press, also claim counterdie, particularly, described die 2 is provided with nitrogen spring 3, binder block 4, described nitrogen spring 3 is a kind of elastomeric elements of new generation with flex capability, (10～15Mpa) are sealed in the high-pressure bottle with high pressure nitrogen for it, by external force nitrogen is compressed, after external force is removed, expand to obtain certain elastic force pressure by high pressure nitrogen, the elastic force pressure of described nitrogen spring 3 acts on the binder block 4, described binder block 4 is prepressing device, by binder block 4 in drawing process to vehicle body panel beating material applied pressure, the vehicle body sheet metal component be can be good at and punch 1 is fitted, thereby the vehicle body sheet metal component is wrinkling when alleviating punching press.
Particularly, be vertically arranged with ladder hole 2-1 in the described die 2, described ladder hole 2-1 is upper and lower two structures that shoulder hole joins, and top shoulder hole size is big, and the lower step hole dimension is little, be provided with cylinder seat 5 in its top shoulder hole, can adopt Bolt Connection or bonding, be provided with binder block 4 in the lower step hole, binder block 4 shapes and shoulder hole shape match, and the employing matched in clearance, described binder block 4 bottom surfaces are outstanding die 2 bottom profile 10-20mm generally; Described cylinder seat 5 bottom surfaces are equipped with nitrogen spring 3, can adopt setting-in or bonding way to install, and insert in the hole at binder block 4 tops described nitrogen spring 3 bottoms, adopts matched in clearance; Flat shape and die 2 baseplane shapes are coincide mutually on the described punch 1; Described die 2 is provided with pore, causes demoulding difficulty to prevent drawn component tightly to be adsorbed in die 2.
Particularly, described nitrogen spring 3 is prior art, buyable, and single nitrogen spring 3 has a closed system of one's own, can work alone in the position of any hope, and the pressure of described nitrogen spring 3 is adjustable within the specific limits.During stretching, the stroke of described nitrogen spring 3 is greater than the stretching depth 3～10mm of stamping parts.
Referring to shown in Figure 2, described nitrogen spring 3 can select for use the Shenzhen to engrave " U.S. gloomy " board product that vast and boundless five metals mould Co., Ltd produces, and this nitrogen spring 3 comprises at least: maintenance screw hole 3-1, piston rod 3-2, dust ring 3-3, snap ring 3-4, sealing ring 3-5, guide way 3-6, O RunddichtringO 3-7, cylinder body 3-8, air-filled pore 3-9, sealed screw 3-10, cylinder bottom 3-11 etc.; Be provided with guide way 3-6 in the described cylinder body 3-8, guide way 3-6 middle part is provided with O RunddichtringO 3-7, top is provided with snap ring 3-4, dust ring 3-3, adopts sealing ring 3-5 sealing between described snap ring 3-4, dust ring 3-3 and the cylinder body 3-8, guarantees the sealing of piston rod 3-2 and cylinder body 3-8; Described piston rod 3-2 is arranged in the guide way 3-6, and the top of piston rod 3-2 is provided with maintenance screw hole 3-1; The bottom of described cylinder body 3-8 is provided with air-filled pore 3-9, sealed screw 3-10, and sealed screw 3-10 plays protection and enhanced leaktightness effect, and cylinder bottom 3-11 connects with cylinder body 3-8.When pressing down piston rod 3-2, the nitrogen that is compressed in the cylinder body 3-8 will produce a reaction force to piston rod 3-2, and gases at high pressure are just finished a working cycles by once compressing and expanding.Described nitrogen spring 3 selects for use producer not unique, not limited by above-mentioned producer, can be preferred according to elastic force pressure.The selection of elastic force pressure can not directly be selected according to the stamping press result calculated, generally will provide 15～20% increment.
Further, the technical parameter of described nitrogen spring 3 is: operating temperature is-6 ° of C-71 ° of C, and highest running speed is 35m/min, and maximum working pressure is 15-150bar, and the inflation media is nitrogen; The quantity that described nitrogen spring 3 is selected for use can get final product divided by required total pressure according to the pressure of the nitrogen spring of same diameter pressure maximum usually; The installation site of nitrogen spring 3 can be installed in the optional position of die 2 according to actual conditions; Nitrogen spring 3 also can adopt other flexible members to replace.
The operation principle of the embodiment of the invention: be example with the single-action drawing die, in the descending process of stamping machine, before die 2 and blank holder (not drawing among the figure) closure, the piston rod 3-2 of nitrogen spring 3 and binder block 4 first contacts are to reach local precompressed effect; In drawing process, binder block 4 can apply certain pressure to vehicle body sheet metal component part, and local pressure-plate-force is increased, and can better control the flowability of vehicle body sheet metal component.
After the end that stretches, stamping machine is up, and die 2 separates with punch 1, and binder block 4 relies on backhaul power and the self gravitation effect of nitrogen springs 3, gets back to initial position.In addition, because die 2 is with after blank holder separates, binder block 4 also has exerting pressure effect of part to the vehicle body sheet metal component under the active force of nitrogen spring 3, can play the discharging function, thereby prevents that die 2 bands from expecting when die 2 and blank holder are separated.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173275.0A CN103240336B (en) | 2013-05-10 | 2013-05-10 | Automobile single-action drawing die with nitrogen springs and prepressing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173275.0A CN103240336B (en) | 2013-05-10 | 2013-05-10 | Automobile single-action drawing die with nitrogen springs and prepressing device |
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| CN103240336A true CN103240336A (en) | 2013-08-14 |
| CN103240336B CN103240336B (en) | 2015-07-15 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586342A (en) * | 2013-10-15 | 2014-02-19 | 浙江吉利控股集团有限公司 | Drawing die |
| CN103639267A (en) * | 2013-11-26 | 2014-03-19 | 梧州恒声电子科技有限公司 | Anti-deformation elastic negative clearance fine-blanking die |
| CN103878240A (en) * | 2013-11-20 | 2014-06-25 | 无锡曙光模具有限公司 | Forming and shaping die of automobile engine exhaust system manifold |
| CN104001837A (en) * | 2014-05-08 | 2014-08-27 | 南京惠德机械有限公司 | Wire double-acting bending forming mould |
| CN104014681A (en) * | 2014-06-27 | 2014-09-03 | 成都丽元电器有限公司 | Novel spring type material taking device |
| CN105574301A (en) * | 2016-02-25 | 2016-05-11 | 成都亨通兆业精密机械有限公司 | Design method for automobile covering part drawing die |
| CN108687243A (en) * | 2018-04-27 | 2018-10-23 | 吉利汽车研究院（宁波）有限公司 | A kind of mold for realizing blocking function without locking press |
| CN110899507A (en) * | 2019-12-12 | 2020-03-24 | 奇瑞汽车股份有限公司 | Terrace die for solving drawing deformation of outer covering piece |
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| JPS60191620A (en) * | 1984-03-13 | 1985-09-30 | Nissan Motor Co Ltd | Press die |
| JP2005021945A (en) * | 2003-07-03 | 2005-01-27 | Hirotec Corp | Metallic mold for press-forming and method for producing panel using it |
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