CN205380203U - Cold stamping die's upper and lower pair of blank holder drawing die structure - Google Patents
Cold stamping die's upper and lower pair of blank holder drawing die structure Download PDFInfo
- Publication number
- CN205380203U CN205380203U CN201620111312.4U CN201620111312U CN205380203U CN 205380203 U CN205380203 U CN 205380203U CN 201620111312 U CN201620111312 U CN 201620111312U CN 205380203 U CN205380203 U CN 205380203U
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- blank holder
- die
- blank
- cold stamping
- stamping die
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- Expired - Fee Related
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Abstract
The utility model relates to a car cold stamping die's manufacturing technical field especially relates to a cold stamping die's upper and lower pair of blank holder drawing die structure. Including last die, last blank holder, terrace die, lower four parts of blank holder. Combined action through upper and lower blank holder is earlier the blank holding, and then the shape of stretch forming play needs. The utility model discloses the mechanism has overcome stretch forming partially must reduce the tensile degree of depth pressing the limitation more than the charge level, has improved material utilization rate.
Description
Technical field
This utility model relates to the manufacturing technology field of Automotive Cold Pressing Dies tool, particularly relates to a kind of Automotive Cold Pressing Dies tool double; two blank holder drawing die structures up and down.
Background technology
At present, in automobile cold stamping industry, the appearance of most of parts is all stretch out by drawing die.Traditional drawing die structure working portion is mainly made up of punch, lower blank holder, three parts of upper cavity die.Its operation principle is that lower blank holder is first by jack-up the peak exceeding punch, blank is placed on blank holder, upper cavity die moves downward under the drive of press, upper cavity die binder surface part first contacts and with blank holder combined effect blank holding with the blank being placed on blank holder, then upper cavity die moves downwardly together with blank holder and drives blank and punch contact moudling, when mould arrives closure state, blank is drawn into required shape.In order to realize not allowing other position profile first come in contact with blank before blank holder pushes down blank, but allow upper cavity die binder surface part first contact and with blank holder combined effect the purpose of blank holding with blank, generally we need being there is a need to control more than binder surface in the part of drawing die drawing and forming, some part is due to complex-shaped, if all controlled more than binder surface needing the part at drawing die drawing and forming, product can be caused stretched deeply, it is possible that the phenomenon of product drawing crack, product quality requirement can not be met, even if will not drawing crack, owing to the too deep stock utilization of stretching depth also can reduce, thus adding manufacturing cost.
Summary of the invention
The purpose of this utility model is in that to overcome the deficiency of above-mentioned technology, and double; two up and down blank holder structures of a kind of Automotive Cold Pressing Dies tool drawing die are provided, can effectively reduce stretching depth, thus reducing the possibility of drawing crack, and the reduction due to stretching depth, reduce billet size, thus improve the utilization rate of material.
This utility model for achieving the above object, by the following technical solutions:
A kind of Automotive Cold Pressing Dies tool double; two blank holder drawing dies up and down, it is characterised in that: include upper cavity die, upper blank holder, punch, lower blank holder.
The beneficial effects of the utility model:
This utility model is when solving the drawing and forming problem of some complex shape part, achieve and not only drawing and forming part all need not be controlled more than binder surface but also first blank holding can be redrawn the purpose of molding, thus reducing stretching depth, improve stock utilization.
Accompanying drawing illustrates: Fig. 1 is the schematic diagram of double; two blank holder drawing die structure main working parts up and down.
Detailed description of the invention: as it is shown in figure 1, described double; two up and down blank holder drawing die structures constitute the main working parts of drawing die.Described upper and lower pair of blank holder drawing die structure mainly includes upper cavity die 1, upper blank holder 2, punch 3, lower blank holder 4.Described upper cavity die 1 is arranged on upper bolster；Described upper blank holder 2 is arranged on upper bolster, and keeps relative motion relation by guide plate guiding with upper cavity die 1；Described punch 3 is arranged on die shoe；Described lower blank holder is arranged on die shoe, and keeps relative motion relation by guide plate guiding with punch.The pressure source of upper blank holder is provided by nitrogen cylinder, and the pressure source of lower blank holder is provided by nitrogen cylinder or pneumatic jack bar.Need to emphasize especially to be pointed out that: the pressure of upper blank holder is less than the pressure of lower blank holder, and concrete pressure size determines according to the concrete condition of actual parts.Operation principle of the present utility model is easily understood, and when mould is in open mode, upper blank holder is in the minimum point relative to die under the effect of pressure source, and in the minimum point of upper cavity die at the bottom of the binder surface of upper blank holder；Lower blank holder by jack-up, is in the peak relative to punch, and the binder surface of lower blank holder is higher than the peak of punch under the effect of pressure source.Blank is placed on lower blank holder, upper mould moves downward under the drive of forcing press, first upper blank holder contacts blank, blank holding under the combined effect of upper and lower blank holder, then going up mould to continue to move downward, owing to the pressure of lower blank holder is more than the pressure of upper blank holder, now blank holder remains stationary motionless up and down, upper cavity die continues to move downward until contacting pier with upper blank holder extremely, and upper cavity die part profile can contact with blank and more stretched for blank shapes in the process；Finally, blank upper cavity die, on blank holder, lower blank holder combined effect under continue downwards motion drawing and forming, until it reaches the whole product drawing and forming of mold closed condition puts in place, it is achieved thereby that the function of the drawing and forming of whole blank.
Claims (1)
1. double; two up and down blank holder drawing die structures of a cold punching die, it is characterized in that: include punch, lower blank holder, upper blank holder, four parts of upper cavity die, described lower blank holder and described punch are installed together the relation keeping upper and lower relative motion, and described upper blank holder and described die are installed together the relation keeping relative motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620111312.4U CN205380203U (en) | 2016-02-04 | 2016-02-04 | Cold stamping die's upper and lower pair of blank holder drawing die structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620111312.4U CN205380203U (en) | 2016-02-04 | 2016-02-04 | Cold stamping die's upper and lower pair of blank holder drawing die structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205380203U true CN205380203U (en) | 2016-07-13 |
Family
ID=56350423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620111312.4U Expired - Fee Related CN205380203U (en) | 2016-02-04 | 2016-02-04 | Cold stamping die's upper and lower pair of blank holder drawing die structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205380203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112007970A (en) * | 2020-07-08 | 2020-12-01 | 中国第一汽车股份有限公司 | Process method for controlling shaping quality of B column side of back door outer plate |
-
2016
- 2016-02-04 CN CN201620111312.4U patent/CN205380203U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112007970A (en) * | 2020-07-08 | 2020-12-01 | 中国第一汽车股份有限公司 | Process method for controlling shaping quality of B column side of back door outer plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20200204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |