CN106862389B - A kind of covering drawing die - Google Patents
A kind of covering drawing die Download PDFInfo
- Publication number
- CN106862389B CN106862389B CN201510924875.5A CN201510924875A CN106862389B CN 106862389 B CN106862389 B CN 106862389B CN 201510924875 A CN201510924875 A CN 201510924875A CN 106862389 B CN106862389 B CN 106862389B
- Authority
- CN
- China
- Prior art keywords
- bead
- adjustment
- cavity plate
- covering
- drawing die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011324 bead Substances 0.000 claims abstract description 134
- 210000003205 muscle Anatomy 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 3
- 230000037303 wrinkles Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000035611 feeding Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000009966 trimming Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a kind of covering drawing dies.Covering drawing die described in the covering drawing die includes cavity plate (1) and pressure plate, bead is provided at the non-product position for closing on raised corner portion on the cavity plate (1) and pressure plate, bead includes basic bead (3a), adjust bead (3b) and end bead (3c), the angle adjusted between bead (3b) and the outer side edges in raised corner is less than or equal to 15 degree, the end bead (3c) is parallel to the basic bead (3a), adjust bead (3b) respectively with basic bead (3a), end bead (3c) circular sliding slopes.In the present invention, the bead of raised corner positions is closed on by setting to control the feeding of plate, and adjusts the outer side edges that bead is substantially parallel to raised corner, thus, thus the charging that raised corner portion can preferably be controlled reduces or even avoids corner wrinkling.
Description
Technical field
The present invention relates to stamping Die Design technical fields, more particularly to a kind of covering drawing die.
Background technique
The manufacturing process of automobile panel generally comprises the sequences such as drawing, trimming and piercing die, side trimming and piercing die, shaping.To covering
It is exactly first step that part surface quality, which serves most important: drawing operation.
Drawing operation is the stamping procedure for making plane plate become required shape using stretching die.When drawing as shown in Figure 1,
Cavity plate downlink is pressed in tablet among cavity plate and pressure plate.Then, cavity plate and pressure plate are clamped tablet and are continued traveling downwardly, and touch
Product starts drawing and forming when punch-pin.Until punch-die is closed completely, product drawing and moulding is finished.
In the prior art, the bead 3 being arranged at the covering corner 2 of cavity plate 1 is linear.In drawing and moulding
Afterwards, it is easy to appear wrinkling at the raised corner positions of the covering of workpiece, influences the presentation quality and intensity of product.Cause
This, it is desirable to have a kind of technical solution overcomes or at least mitigates the drawbacks described above of the prior art.
Summary of the invention
The purpose of the present invention is to provide a kind of covering drawing dies to overcome or at least mitigate the above-mentioned of the prior art
At least one of defect.
To achieve the above object, the present invention provides a kind of covering drawing die, and the covering drawing die includes recessed
Mould and pressure plate, and the covering has raised corner, wherein the raised angle is closed on the cavity plate and pressure plate
Bead is provided at non-product position at portion, the bead includes the basic bead being sequentially connected, adjustment bead
With end bead, wherein the angle between the adjustment bead and the outer side edges in the raised corner is less than or equal to 15 degree,
The end bead is parallel to the basic bead, the adjustment bead respectively with the basic bead, the end
Bead circular sliding slopes are held,
Wherein, from the direction that extends to the end bead of adjustment bead, the adjustment bead and
The distance between the outer side edges in protrusion corner dullness is gradually increased.
Preferably, the radius of the connection circular arc between the adjustment bead and the basic bead is greater than the protrusion
The radius of connection circular arc between the outer side edges and inner side edge in corner.
Preferably, removable cavity plate adjustment insert is provided on the cavity plate, wherein the adjustment bead is at least
It is partially disposed in the cavity plate adjustment insert.
Preferably, the entire adjustment bead setting is in cavity plate adjustment insert.
Preferably, the minimum range between the cavity plate adjustment insert and final products edge is more than or equal to 8 millimeters.
Preferably, on the cavity plate, bead is arranged at convex, in the pressure plate, corresponding bead concavity
Arrangement.
Preferably, the bead on the cavity plate is arranged with welding manner, be provided in the pressure plate it is parallel extremely
Few two corresponding adjustment beads, are provided with an only adjustment bead in the cavity plate, when in use, on the cavity plate
Adjust bead and a cooperation at least two corresponding adjustment beads in the pressure plate.
Preferably, described at least two corresponding adjustment beads in the pressure plate are arranged in parallel or described
It is arranged between described at least two corresponding adjustment muscle in pressure plate at uniform angle interval.
Preferably, if the adjustment bead of the cavity plate and at least two corresponding adjustment beads in the pressure plate
In cooperation when carrying out drawing, in the covering there is raised corner to wrinkle, processing removes on the cavity plate
The adjustment bead, and weld another adjustment bead of setting, with to another corresponding adjustment bead in the pressure plate
Cooperation.
In the present invention, the bead of raised corner positions is closed on by setting to control the feeding of plate, and adjusts and draws
Prolong the outer side edges that muscle is substantially parallel to raised corner, thus, it is possible to preferably control the charging of raised corner portion, thus reduces
Or even avoid corner wrinkling.
Detailed description of the invention
Fig. 1 is the schematic diagram of covering drawing die cavity plate according to prior art.
Fig. 2 is the schematic diagram of covering drawing die cavity plate according to an embodiment of the invention.
Appended drawing reference:
| 1 | Cavity plate | 2b | Inner side edge |
| 2 | Raised corner | 3a | Basic bead |
| 3 | Bead | 3b | Adjust bead |
| 4 | Cavity plate adjusts insert | 3c | End bead |
| 2a | Outer side edges |
Specific embodiment
In the accompanying drawings, same or similar element is indicated using same or similar label or there is same or like function
Element.The embodiment of the present invention is described in detail with reference to the accompanying drawing.
In the description of the present invention, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the scope of the invention.
Fig. 1 is the schematic diagram of the cavity plate of covering drawing die according to an embodiment of the invention.As shown in the figure is covering
The cavity plate 1 of part drawing die.There is raised corner 2 on cavity plate 1, raised corner 2 has the outer side edges 2a for closing on outside and faces
The inner side edge 2b of nearly inside.Outer side edges 2a and inner side edge 2b are generally perpendicular to each other.It should be pointed out that raised corner refers to most
Corner raised on stamping forming covering eventually.Actually itself to cavity plate 1, raised corner 2 is usually downwardly concave
Corner.But for ease of description, in the present invention, by the recessed of the raised corner being used to form on product on punch-pin 1
Portion, referred to as raised corner.
Covering drawing die according to an embodiment of the invention includes cavity plate 1 and pressure plate (not shown).It is described to cover
Cover piece has raised corner, for example, the covering is wheel cover.The raised angle is closed on the cavity plate 1 and pressure plate
It is provided with bead at non-product position at portion, to control the feeding of plate.
It is provided with bead at the non-product position for closing on the raised corner portion on the cavity plate 1 and pressure plate,
The bead includes the basic bead 3a being sequentially connected, adjustment bead 3b and end bead 3c.Basic bead 3a,
Bead 3b and the generally linear extension of end bead 3c are adjusted, but extension can also be bent, for example, extending for circular arc.
In bending, the angle between each section of bead then refers to the angle of line between each section of bead endpoint.
Bead refers to the muscle set by the non-product position of mold, is generally arranged on cavity plate and pressure plate.Drawing
Muscle plays very important effect in drawing.Referring to fig. 2, basic bead 3a is generally along being parallel to cavity plate outboard wheel profile
Extend.In addition, the cross sectional shape of bead is also very important.In an alternative embodiment, the section of the bead
Shape is rectangular.In another alternative embodiment, the cross sectional shape of the bead is semicircle.Semicircular bead has
Advantage easy to process, compression effect is good.
It is found by comparative test, the bead bent inwardly of the invention, having preferably prevents corrugation effect.?
That is, it is preferable that bead is curved to the inside.Inside herein refers to, closes on the side of final products.
Advantageously, basic bead and its extended line and raised corner 2 closest at a distance from locating 10mm-20mm it
Between.
Advantageously, the angle between adjustment bead 3b and the outer side edges in raised corner is less than or equal to 15 degree, end is drawn
Prolong muscle 3c and be parallel to the basic bead 3a, adjustment bead 3b respectively with basic bead 3a, the end bead 3c
Circular sliding slopes.Since the angle between adjustment bead 3b and the outer side edges 2a in raised corner 2 is smaller, general parallel orientation, thus, energy
Enough plate feedings relatively evenly controlled at raised corner 2, advantageously reduce or even are eliminated plate corrugation.
In a preferred embodiment, from the direction that the adjustment bead 3b extends to the end bead 3c,
The distance between the adjustment bead 3b and the outer side edges in the raised corner dullness are gradually increased.This is conducive to raised corner
Smooth molding.It is especially advantageous that this, which has biggish raised inclination angle in raised corner,.It may further be preferable that adjustment drawing
The radius of connection circular arc between muscle 3b and the basic bead 3a is greater than the outer side edges 2a and inner side edge in the raised corner 2
The radius of connection circular arc between 2b.
Referring to fig. 2, removable cavity plate adjustment insert 4 is provided on cavity plate 1, wherein the adjustment bead 3b is extremely
Partially it is arranged in the cavity plate adjustment insert 4.Preferably, the entire adjustment bead 3b is arranged in the cavity plate tune
In whole insert 4.It is thus possible to replace different inserts to be adjusted to the setting position of adjustment bead 3b.It is standby at one
It selects in embodiment, end bead is also disposed in cavity plate adjustment insert 4.It is understood that cavity plate adjustment insert 4 is specific
Shape and mounting structure can according to need using any appropriate configuration.Alternatively, it is also possible to the setting adjustment insert in pressure plate.
Preferably, the minimum range between the cavity plate adjustment insert 4 and final products edge is more than or equal to 8 millimeters.
Preferably, on the cavity plate, bead is arranged at convex, in the pressure plate, corresponding bead concavity
Arrangement.It is understood that being also correspondingly formed with corresponding bead corresponding with bead on cavity plate in pressure plate.
Bead on cavity plate 2 is advantageously arranged with welding manner.To be provided with simultaneously in the pressure plate convenient for this
The corresponding adjustment bead of capable at least two, is provided with an only adjustment bead 3b, when in use, institute in the cavity plate 1
The adjustment bead 3b stated on cavity plate 1 cooperates with one at least two corresponding adjustment beads in the pressure plate.
In one alternate embodiment, described at least two corresponding adjustment beads in the pressure plate, which are parallel to each other, to be set
It sets.For example, described at least two corresponding adjustment beads can be with spaced set.The spacing is, for example, 3 millimeters.It is another can
It selects in embodiment, is arranged between the corresponding adjustment muscle of described at least two in pressure plate at uniform angle interval.For example, institute
It states at least two corresponding adjustment beads to intersect with corresponding basic bead junction, and between adjacent corresponding adjustment bead
Angle is 5 degree.The particular number of corresponding adjustment bead, can according to need setting.
Preferably, if the adjustment bead 3b of the cavity plate 1 is drawn at least two corresponding adjustment in the pressure plate
When prolonging the cooperation progress drawing in muscle, in the covering there is raised corner 2 to wrinkle, processing removes the cavity plate
On the adjustment bead 3b, and weld another adjustment bead of setting, with to another corresponding adjustment in the pressure plate
Bead cooperation.
In the present invention, the bead of raised corner positions is closed on by setting to control the feeding of plate, and adjusts and draws
Prolong the outer side edges that muscle is substantially parallel to raised corner, thus, it is possible to preferably control the charging of raised corner portion, thus reduces
Or even avoid corner wrinkling.
Finally it is noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.This
The those of ordinary skill in field is it is understood that be possible to modify the technical solutions described in the foregoing embodiments or right
Part of technical characteristic is equivalently replaced；These are modified or replaceed, and it does not separate the essence of the corresponding technical solution originally
Invent the spirit and scope of each embodiment technical solution.
Claims (9)
1. a kind of covering drawing die, including cavity plate (1) and pressure plate, and the covering has raised corner (2), it is special
Sign is, is provided with bead at the non-product position for closing on the raised corner portion on the cavity plate (1) and pressure plate,
The bead includes the basic bead (3a) being sequentially connected, adjusts bead (3b) and end bead (3c), wherein institute
The angle stated between adjustment bead (3b) and the outer side edges (2a) of the raised corner (2) is less than or equal to 15 degree, the end
Bead (3c) is parallel to the basic bead (3a), the adjustment bead (3b) respectively with the basic bead
(3a), the end bead (3c) circular sliding slopes, wherein from the end adjustment bead (3b) Xiang Suoshu bead
On the direction that (3c) extends, the distance between adjustment bead (3b) and the outer side edges in the raised corner are dull gradually to be increased
Greatly.
2. covering drawing die as described in claim 1, which is characterized in that the adjustment bead (3b) and described basic
The radius of connection circular arc between bead (3a) is greater than between the outer side edges (2a) and inner side edge (2b) of the raised corner (2)
Connection circular arc radius.
3. such as covering drawing die of any of claims 1-2, which is characterized in that set on the cavity plate (1)
It is equipped with removable cavity plate adjustment insert (4), wherein the adjustment bead (3b) is at least partially disposed on the cavity plate tune
On whole insert (4).
4. covering drawing die as claimed in claim 3, which is characterized in that entire adjustment bead (3b) setting exists
On cavity plate adjustment insert (4).
5. covering drawing die as claimed in claim 4, which is characterized in that cavity plate adjustment insert (4) and final production
Minimum range between product edge is more than or equal to 8 millimeters.
6. such as covering drawing die of any of claims 1-2, which is characterized in that on the cavity plate, drawing
Muscle is arranged at convex, in the pressure plate, corresponding bead concavity arrangement.
7. covering drawing die as claimed in claim 6, which is characterized in that the bead on the cavity plate is with welding manner
Setting is provided with the corresponding adjustment bead of parallel at least two in the pressure plate, is provided with only in the cavity plate (1)
One adjustment bead (3b), when in use, on the adjustment bead (3b) and the pressure plate on the cavity plate (1) at least
A cooperation in two corresponding adjustment beads.
8. covering drawing die as claimed in claim 7, which is characterized in that described at least two in the pressure plate are right
Should adjust that bead is arranged in parallel or the pressure plate on described at least two corresponding adjustment muscle between at uniform
The setting of angle interval.
9. covering drawing die as claimed in claim 7, which is characterized in that if the adjustment bead of the cavity plate (1)
When (3b) carries out drawing with a cooperation at least two corresponding adjustment beads in the pressure plate, in the covering
It wrinkles with raised corner (2), processing removes the adjustment bead (3b) on the cavity plate, and it is another to weld setting
Bead is adjusted, to cooperate to another corresponding adjustment bead in the pressure plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510924875.5A CN106862389B (en) | 2015-12-14 | 2015-12-14 | A kind of covering drawing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510924875.5A CN106862389B (en) | 2015-12-14 | 2015-12-14 | A kind of covering drawing die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106862389A CN106862389A (en) | 2017-06-20 |
| CN106862389B true CN106862389B (en) | 2019-04-16 |
Family
ID=59177559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510924875.5A Active CN106862389B (en) | 2015-12-14 | 2015-12-14 | A kind of covering drawing die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106862389B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1342532A (en) * | 2001-10-09 | 2002-04-03 | 湖南大学 | Drawing die for forming metallic sheet by punching |
| JP2002282952A (en) * | 2001-03-22 | 2002-10-02 | Kobe Steel Ltd | Method for press forming aluminum alloy panel molded product |
| CN101209470A (en) * | 2006-12-27 | 2008-07-02 | 比亚迪股份有限公司 | Method for eliminating plate shape component partial drape with dent area |
| CN101439376A (en) * | 2007-11-22 | 2009-05-27 | 比亚迪股份有限公司 | Additional method of draw-bead technique for corner part of external covering of vehicle |
| CN101823102A (en) * | 2010-05-24 | 2010-09-08 | 湖南大学 | Drawing rib structure of drawing mold |
| CN202725781U (en) * | 2012-04-27 | 2013-02-13 | 天津天祺德力科技发展有限公司 | Embedded type metal sheet cool stamping drawing die for positive bolt installation |
| CN104117565A (en) * | 2014-08-12 | 2014-10-29 | 合肥工业大学 | Hybrid draw bead structure determining method based on profile of totally open drawing die for complex U-type pieces |
| CN204108147U (en) * | 2014-10-31 | 2015-01-21 | 芜湖福祥模具科技有限公司 | A kind of fender stretching die |
| CN204108146U (en) * | 2014-10-31 | 2015-01-21 | 芜湖福祥模具科技有限公司 | A kind of fender stretching die |
| CN204171176U (en) * | 2013-10-21 | 2015-02-25 | 福特环球技术公司 | For the drawing die group of drawing blank |
-
2015
- 2015-12-14 CN CN201510924875.5A patent/CN106862389B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002282952A (en) * | 2001-03-22 | 2002-10-02 | Kobe Steel Ltd | Method for press forming aluminum alloy panel molded product |
| CN1342532A (en) * | 2001-10-09 | 2002-04-03 | 湖南大学 | Drawing die for forming metallic sheet by punching |
| CN101209470A (en) * | 2006-12-27 | 2008-07-02 | 比亚迪股份有限公司 | Method for eliminating plate shape component partial drape with dent area |
| CN101439376A (en) * | 2007-11-22 | 2009-05-27 | 比亚迪股份有限公司 | Additional method of draw-bead technique for corner part of external covering of vehicle |
| CN101823102A (en) * | 2010-05-24 | 2010-09-08 | 湖南大学 | Drawing rib structure of drawing mold |
| CN202725781U (en) * | 2012-04-27 | 2013-02-13 | 天津天祺德力科技发展有限公司 | Embedded type metal sheet cool stamping drawing die for positive bolt installation |
| CN204171176U (en) * | 2013-10-21 | 2015-02-25 | 福特环球技术公司 | For the drawing die group of drawing blank |
| CN104117565A (en) * | 2014-08-12 | 2014-10-29 | 合肥工业大学 | Hybrid draw bead structure determining method based on profile of totally open drawing die for complex U-type pieces |
| CN204108147U (en) * | 2014-10-31 | 2015-01-21 | 芜湖福祥模具科技有限公司 | A kind of fender stretching die |
| CN204108146U (en) * | 2014-10-31 | 2015-01-21 | 芜湖福祥模具科技有限公司 | A kind of fender stretching die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106862389A (en) | 2017-06-20 |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180525 Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Applicant after: Beijing treasure Car Co.,Ltd. Address before: 102206, Beijing, Shahe Town, Changping District Road, sand Yang Applicant before: BEIQI FOTON MOTOR Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |
Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing baowo Automobile Co.,Ltd. Address before: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee before: Beijing treasure Car Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A drawing die for panel Effective date of registration: 20200817 Granted publication date: 20190416 Pledgee: BEIQI FOTON MOTOR Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd. Registration number: Y2020990000977 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210507 Granted publication date: 20190416 Pledgee: BEIQI FOTON MOTOR Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd. Registration number: Y2020990000977 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A drawing die for panel Effective date of registration: 20210726 Granted publication date: 20190416 Pledgee: BEIQI FOTON MOTOR Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd. Registration number: Y2021990000644 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
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Date of cancellation: 20231123 Granted publication date: 20190416 Pledgee: BEIQI FOTON MOTOR Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd.|Borgward Automotive (China) Co., Ltd. Registration number: Y2021990000644 |
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Effective date of registration: 20240220 Address after: 102206, Beijing, Shahe, Changping District Town, Sha Yang Road, Lao Wan Village North Patentee after: BEIQI FOTON MOTOR Co.,Ltd. Country or region after: China Address before: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee before: Beijing baowo Automobile Co.,Ltd. Country or region before: China |