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 PDF

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Publication number
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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CN
China
Prior art keywords
die
nitrogen spring
action
automobile
prepressing
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CN2013101732750A
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Chinese (zh)
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CN103240336B (en
Inventor
凌家伟
桂翔
陈国宏
杨春和
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奇瑞汽车股份有限公司
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Priority to CN201310173275.0A priority Critical patent/CN103240336B/en
Publication of CN103240336A publication Critical patent/CN103240336A/en
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Publication of CN103240336B publication Critical patent/CN103240336B/en

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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

The automobile single-action drawing die of nitrogen spring and prepressing device is installed

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)

1. the automobile single-action drawing die that nitrogen spring and prepressing device are installed is characterized in that single-action drawing die comprises at least: punch (1), die (2), nitrogen spring (3), binder block (4), cylinder seat (5); Described die (2) is installed in the upper punch of single action press, and described punch (1) is installed on the work top of single action press.
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) is provided with described nitrogen spring (3), described binder block (4), and described binder block (4) is prepressing device.
3. the automobile single-action drawing die of installation nitrogen spring according to claim 2 and prepressing device, it is characterized in that, 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, be provided with described cylinder seat (5) in its top shoulder hole, adopt Bolt Connection or bonding, be provided with described binder block (4) in the lower step hole, described binder block (4) shape and shoulder hole shape match, and adopt matched in clearance.
4. the automobile single-action drawing die of installation nitrogen spring according to claim 3 and prepressing device is characterized in that, described binder block (4) bottom surface outstanding described die (2) bottom profile 10-20mm.
5. the automobile single-action drawing die of installation nitrogen spring according to claim 3 and prepressing device is characterized in that, described cylinder seat (5) bottom surface is equipped with described nitrogen spring (3), adopts setting-in or bonding installation; Insert in the hole at described binder block (4) top described nitrogen spring (3) bottom, adopts matched in clearance.
6. the automobile single-action drawing die of installation nitrogen spring according to claim 1 and prepressing device is characterized in that, flat shape gone up by described punch (1) and described die (2) baseplane shape is coincide mutually.
7. the automobile single-action drawing die of installation nitrogen spring according to claim 6 and prepressing device is characterized in that, described die (2) is provided with pore.
8. 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) 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); Be provided with described guide way (3-6) in the 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), adopts described sealing ring (3-5) sealing between described snap ring (3-4), described dust ring (3-3) and the described cylinder body (3-8); Described piston rod (3-2) is arranged in the 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).
9. the automobile single-action drawing die of installation nitrogen spring according to claim 8 and prepressing device is characterized in that, the technical parameter of described nitrogen spring (3): 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 (3) is greater than the stretching depth 3~10mm of stamping parts.
10. the automobile single-action drawing die of installation nitrogen spring according to claim 9 and prepressing device is characterized in that, described nitrogen spring (3) is selected quantity for use, according to the pressure of the nitrogen spring of same diameter pressure maximum divided by total operating pressure.
CN201310173275.0A 2013-05-10 2013-05-10 Automobile single-action drawing die with nitrogen springs and prepressing device CN103240336B (en)

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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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CN103240336B CN103240336B (en) 2015-07-15

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Cited By (8)

* Cited by examiner, † Cited by third party
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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Publication number Priority date Publication date Assignee Title
JPS57193244A (en) * 1981-05-25 1982-11-27 Nissan Motor Co Ltd Cushion drawing press die
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
CN201205578Y (en) * 2008-06-04 2009-03-11 中国国际海运集装箱(集团)股份有限公司 Container top board forming mold
CN202212467U (en) * 2011-07-31 2012-05-09 苏州金鸿顺汽车部件股份有限公司 Forming mold for high-strength automotive anti-collision beam
CN102513445A (en) * 2011-11-30 2012-06-27 长城汽车股份有限公司 Trimming and flanging composite stamping die
CN202845594U (en) * 2012-10-10 2013-04-03 中航黑豹股份有限公司 Drawing die with upper die provided with internal pressure material core

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57193244A (en) * 1981-05-25 1982-11-27 Nissan Motor Co Ltd Cushion drawing press die
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
CN201205578Y (en) * 2008-06-04 2009-03-11 中国国际海运集装箱(集团)股份有限公司 Container top board forming mold
CN202212467U (en) * 2011-07-31 2012-05-09 苏州金鸿顺汽车部件股份有限公司 Forming mold for high-strength automotive anti-collision beam
CN102513445A (en) * 2011-11-30 2012-06-27 长城汽车股份有限公司 Trimming and flanging composite stamping die
CN202845594U (en) * 2012-10-10 2013-04-03 中航黑豹股份有限公司 Drawing die with upper die provided with internal pressure material core

Cited By (11)

* Cited by examiner, † Cited by third party
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
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
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
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
CN104001837A (en) * 2014-05-08 2014-08-27 南京惠德机械有限公司 Wire double-acting bending forming mould
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
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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