CN103240336B - 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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- CN103240336B CN103240336B CN201310173275.0A CN201310173275A CN103240336B CN 103240336 B CN103240336 B CN 103240336B CN 201310173275 A CN201310173275 A CN 201310173275A CN 103240336 B CN103240336 B CN 103240336B
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- die
- nitrogen spring
- hole
- binder block
- automobile
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 69
- 239000011230 binding agent Substances 0.000 claims description 36
- 230000009471 action Effects 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 7
- 238000003825 pressing Methods 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 6
- 238000004080 punching Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses an automobile single-action drawing die with nitrogen springs and a prepressing device and belongs to the automobile drawing die field. The single-action drawing die at least comprises a terrace die, a die, nitrogen springs, a pressing block and a cylinder seat. The die is arranged on the upper punch of a single-action pressure machine and the terrace die is mounted on the work table surface of the single-action pressure machine. By arranging the nitrogen springs and the pressing block on the die, the spring force of the nitrogen springs acts on the pressing block, and prepressure can be exerted on an automobile body metal plate in advance through the pressing block during the drawing process, so that the automobile body metal plate can be well adhered to the terrace die and further the wrinkling of the automobile body metal plate during the punching process can be reduced. Meanwhile, the pressing block can perform a discharging function to prevent materials from being carried by an upper die.
Description
Technical field
The present invention relates to automobile drawing die field, particularly a kind of automobile single-action drawing die installing nitrogen spring and prepressing device.
Background technology
In automobile product development process, the manufacture of covering is the key link that body of a motor car manufactures.Automobile panel is the part of decorative appearance, is again the stressed part of shell shape.On covering material surface, any small defect all can cause the diffuse reflection of light and the attractive in appearance of defeature after painting, and therefore covering material surface does not allow ripple, fold, edge to draw the defect of trace and other deface aesthetic feelings.
In automobile panel, the covering of simple shape, depth as shallow generally adopts single action press shaping; The dark covering of complex-shaped, the degree of depth adopts double action press shaping.Drawing die is the mould for becoming body of a motor car shaping sheet metal drawing, forms primarily of punch, recessed chess and holding pad and punch holder, punch and holding pad, between die and holding pad, inside and outside guider is housed respectively.The difference of single draw and two dynamic drawing is, the die of single action press is above, and blank holder and punch are below.The punch of double action press is above, and when motion, blank holder first moves, and after flanging, punch moves again.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
Because the shape of vehicle body sheet metal limits by moulding or body structure, cause the profile section difference of some Metal Sheets for Body-manufacturings to change greatly on pressing direction, during drawing, easily occur that the die of local profile is not easily fitted with punch, easily wrinkling occurs.Also easily there is upper mould band material phenomenon.
Summary of the invention
In order to solve the problem of prior art, embodiments provide a kind of automobile single-action drawing die installing nitrogen spring and prepressing device.By arranging nitrogen spring and binder block, can realize in drawing process, in advance precompressed is carried out to vehicle body sheet metal material, alleviate or prevent sheet metal part wrinkling.Described technical scheme is as follows:
Install an automobile single-action drawing die for nitrogen spring and prepressing device, its single-action drawing die at least comprises: punch, die, nitrogen spring, binder block, cylinder seat; Described die is arranged on the upper punch of single action press, and described punch is arranged on the work top of single action press.
Particularly, described die is provided with described nitrogen spring, described binder block, described binder block is prepressing device.
Particularly, ladder hole is vertically arranged with in described die, described ladder hole is the structure that upper and lower two shoulder holes connect, described cylinder seat is provided with in its top shoulder hole, adopt bolt-connection or bonding, be provided with described binder block in lower step hole, described binder block shape and shoulder hole shape match, and adopt matched in clearance.
Further, described female bottom profile 10-20mm is given prominence in described binder block bottom surface.
Particularly, described cylinder seat bottom surface is provided with described nitrogen spring, adopts setting-in or bonding installation; Described nitrogen spring bottom is inserted in the hole at described binder block top, adopts matched in clearance.
Particularly, on described punch, flat shape and described die baseplane shape are coincide mutually.
Further, described die is provided with pore.
Particularly, described nitrogen spring at least comprises: 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 described cylinder body, described guide way be provided with described O RunddichtringO, described snap ring, described dust ring, described snap ring, between described dust ring and described cylinder body, adopt described sealing ring to seal; Described piston rod is arranged in 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 ° C, and operating pressure is 15-150bar, and inflation medium is nitrogen; The stroke of described nitrogen spring is greater than the stretching depth 3 ~ 10mm of stamping parts.
Further, described nitrogen spring selects quantity, according to the pressure of the maximum nitrogen spring of same diameter pressure divided by total operating pressure.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
By installing nitrogen spring and binder block on die, the elastic force pressure of nitrogen spring acts on binder block, precompression can be applied to vehicle body sheet metal material in advance in drawing process by binder block, Metal Sheets for Body-manufacturing is made to can be good at fitting with punch, thus Metal Sheets for Body-manufacturing is wrinkling when alleviating punching press, binder block can play material unloading function simultaneously, prevents modular belt material.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the automobile single-action drawing die structural representation of the installation nitrogen spring that provides of the embodiment of the present invention and 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 present invention and prepressing device.
In figure, each symbol represents that implication is as follows:
1 punch;
2 dies, 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.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
When the pressure-pad-force of single action press is descending by die, the reaction force acted on blank holder provides, and therefore in automobile panel, the covering of simple shape, depth as shallow generally adopts single action press shaping; The dark covering of complex-shaped, the degree of depth must adopt double action press shaping.This is because the pressure-plate-force of single action press obtains by the oil cylinder below lathe or air cushion, pressure and the stroke of oil cylinder (or air cushion) are all much smaller than double action press, and it can not provide the forming force needed for complicated deep-drawing part of larger pressure-plate-force and Long Distances.Secondly, the holding pad of single action press drawing die used is thinner, and rigid phase, to weak, also can not adapt to the shaping of complicated deep-drawing part.
Shown in Figure 1, embodiments provide a kind of automobile single-action drawing die installing nitrogen spring and prepressing device, at least comprise: punch 1, die 2, nitrogen spring 3, binder block 4, cylinder seat 5 etc., described die 2 is arranged on the upper punch of single action press, also mould is deserved to be called, described punch 1 is arranged on the work top of single action press, also counterdie is claimed, 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, high pressure nitrogen (10 ~ 15Mpa) is sealed in high-pressure bottle by it, by external force, nitrogen is compressed, after external force is removed, expand by high pressure nitrogen and obtain certain elastic force pressure, the elastic force pressure of described nitrogen spring 3 acts on binder block 4, described binder block 4 is prepressing device, by binder block 4 in drawing process to vehicle body sheet metal material applied pressure, Metal Sheets for Body-manufacturing is made to can be good at fitting with punch 1, thus Metal Sheets for Body-manufacturing is wrinkling when alleviating punching press.
Particularly, ladder hole 2-1 is vertically arranged with in described die 2, described ladder hole 2-1 is the structure that upper and lower two shoulder holes connect, and top shoulder hole size is large, and lower step hole dimension is little, cylinder seat 5 is provided with in its top shoulder hole, can adopt bolt-connection or bonding, be provided with binder block 4 in lower step hole, binder block 4 shape and shoulder hole shape match, and adopting matched in clearance, profile 10-20mm bottom die 2 is generally given prominence in described binder block 4 bottom surface; Described cylinder seat 5 bottom surface is provided with nitrogen spring 3, and setting-in or bonding way can be adopted to install, and described nitrogen spring 3 bottom is inserted in the hole at binder block 4 top, adopts matched in clearance; On described punch 1, flat shape and die 2 baseplane shape are coincide mutually; Described die 2 is provided with pore, causes demoulding difficulty to prevent drawn component to be tightly 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.
Shown in Figure 2, " U.S. gloomy " board product that described nitrogen spring 3 can select Ming Hao hardware dies Co., Ltd of Shenzhen to produce, this nitrogen spring 3 at least comprises: 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.; Guide way 3-6 is provided with in described cylinder body 3-8, O RunddichtringO 3-7 is provided with in the middle part of guide way 3-6, top is provided with snap ring 3-4, dust ring 3-3, described snap ring 3-4, adopts sealing ring 3-5 to seal between dust ring 3-3 and cylinder body 3-8, ensures the sealing of piston rod 3-2 and cylinder body 3-8; Described piston rod 3-2 is arranged in 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 to when pressing down piston rod 3-2, the nitrogen be compressed in cylinder body 3-8 will produce a reaction force to piston rod 3-2, and gases at high pressure are by first compression and expand and just complete a working cycles.Described nitrogen spring 3 selects producer not unique, does not limit by above-mentioned producer, can be preferred according to elastic force pressure.The result that the selection of elastic force pressure can not calculate according to stamping press is directly selected, and generally will provide the increment of 15 ~ 20%.
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 inflation medium is nitrogen; The quantity that described nitrogen spring 3 is selected, usually can according to the pressure of the maximum nitrogen spring of same diameter pressure divided by required total pressure; The installation site of nitrogen spring 3 according to actual conditions, can be arranged on the optional position of die 2; Nitrogen spring 3 also can adopt other flexible members to replace.
The operation principle of the embodiment of the present invention: for single-action drawing die, in the descending process of stamping machine, before die 2 and blank holder (not shown in FIG.) are closed, the piston rod 3-2 of nitrogen spring 3 first contacts with binder block 4, to reach local precompressed effect; In drawing process, binder block 4 can apply certain pressure to Metal Sheets for Body-manufacturing local, the pressure-plate-force of local is increased, better can control the mobility of Metal Sheets for Body-manufacturing.
After stretching terminates, stamping machine is up, and die 2 is separated with punch 1, and binder block 4 relies on reverberation matrix method and the self gravitation effect of nitrogen spring 3, gets back to initial position.In addition, after die 2 is separated with blank holder, binder block 4, under the active force of nitrogen spring 3, also has exerting pressure effect of local to Metal Sheets for Body-manufacturing, can play material unloading function, thus prevents from die 2 to be with when die 2 and blank holder are separated expecting.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. an automobile single-action drawing die for nitrogen spring and prepressing device is installed, at least comprises: punch (1), die (2), nitrogen spring (3), binder block (4), cylinder seat (5); Described die (2) is arranged on the upper punch of single action press, and described punch (1) is arranged on the work top of single action press; Described die (2) is provided with nitrogen spring (3), binder block (4), described binder block (4) is prepressing device; It is characterized in that, ladder hole (2-1) is vertically arranged with in described die (2), the cross section that described ladder hole (2-1) is upper and lower arrangement is the structure that two shoulder holes of falling convex connect, top shoulder hole size is large, lower step hole dimension is little, be positioned at same center line, the large aperture of the top shoulder hole of described ladder hole (2-1) is greater than the large aperture in lower step hole, and the diameter holes of top shoulder hole connects with the hole, large footpath in lower step hole; Described cylinder seat (5) is provided with in the shoulder hole of described top, adopt bolt-connection or bonding, described binder block (4) is provided with in lower step hole, described binder block (4) shape and lower step hole shape match, adopt matched in clearance, the top of described binder block (4) is provided with flange, and flange is positioned at the macropore in lower step hole; Described nitrogen spring (3) is arranged in ladder hole (2-1), and nitrogen spring (3) top connects with described cylinder seat (5) bottom surface, adopt setting-in or bonding installation, nitrogen spring (3) bottom is inserted in the blind hole at described binder block (4) top, adopts matched in clearance; Described nitrogen spring (3), described binder block (4), described cylinder seat (5) are positioned at same ladder hole (2-1), form the single-action drawing die in order to shaping shell shape automobile body covering piece thus; Described binder block (4) bottom shape and automobile body covering piece punch (1) top surface shape match.
2. the automobile single-action drawing die of installation nitrogen spring according to claim 1 and prepressing device, is characterized in that, described die (2) bottom profile 10-20mm is given prominence in described binder block (4) bottom surface.
3. the automobile single-action drawing die of installation nitrogen spring according to claim 1 and prepressing device, is characterized in that, described punch (1) top surface shape and described die (2) bottom shape coincide mutually.
4. the automobile single-action drawing die of installation nitrogen spring according to claim 1 and prepressing device, is characterized in that, (2) are provided with pore to described die.
5. the automobile single-action drawing die of installation nitrogen spring according to claim 1 and prepressing device, it is characterized in that, described nitrogen spring (3) at least comprises: 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); Described guide way (3-6) is provided with in described cylinder body (3-8), described guide way (3-6) is provided with described O RunddichtringO (3-7), described snap ring (3-4), described dust ring (3-3), described snap ring (3-4), between described dust ring (3-3) and described cylinder body (3-8), adopts described sealing ring (3-5) to seal; Described piston rod (3-2) is arranged in described guide way (3-6); Described cylinder body (3-8) bottom is provided with described air-filled pore (3-9), described sealed screw (3-10), and described cylinder bottom (3-11) connects with described cylinder body (3-8).
6. the automobile single-action drawing die of installation nitrogen spring according to claim 1 and prepressing device, it is characterized in that, the technical parameter of described nitrogen spring (3): operating temperature is-6 DEG C-71 DEG C, operating pressure is 15-150bar, and inflation medium is nitrogen; The stroke of described nitrogen spring (3) is greater than the stretching depth 3 ~ 10mm of stamping parts.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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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| Publication Number | Publication Date |
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| CN103240336A CN103240336A (en) | 2013-08-14 |
| CN103240336B true CN103240336B (en) | 2015-07-15 |
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| CN201310173275.0A Active CN103240336B (en) | 2013-05-10 | 2013-05-10 | Automobile single-action drawing die with nitrogen springs and prepressing device |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103586342B (en) * | 2013-10-15 | 2017-04-12 | 浙江吉利汽车研究院有限公司 | Drawing die |
| CN103878240B (en) * | 2013-11-20 | 2016-08-17 | 无锡曙光模具有限公司 | The shaping shaping mould of automobile engine exhaust system manifold |
| 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 |
| CN104001837B (en) * | 2014-05-08 | 2016-02-10 | 南京惠德机械有限公司 | Wire pair moves bend forming die |
| 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 |
| CN110052522A (en) * | 2019-04-25 | 2019-07-26 | 安徽江淮福臻车体装备有限公司 | A kind of precompressed mechanism metal plate anti-corrugation pressing process and its used |
| CN110899507B (en) * | 2019-12-12 | 2021-05-28 | 奇瑞汽车股份有限公司 | Terrace die for solving drawing deformation of outer covering piece |
| CN112338064A (en) * | 2020-11-04 | 2021-02-09 | 奇瑞汽车股份有限公司 | Exhaust structure of drawing male die of top cover outer plate |
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