CN110405056A - Without bridge metal plate door hinge entirety partition type processing method - Google Patents
Without bridge metal plate door hinge entirety partition type processing method Download PDFInfo
- Publication number
- CN110405056A CN110405056A CN201910556957.7A CN201910556957A CN110405056A CN 110405056 A CN110405056 A CN 110405056A CN 201910556957 A CN201910556957 A CN 201910556957A CN 110405056 A CN110405056 A CN 110405056A
- Authority
- CN
- China
- Prior art keywords
- fixing piece
- processing method
- metal plate
- door hinge
- segmentation
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims abstract description 23
- 238000003672 processing method Methods 0.000 title claims abstract description 20
- 238000005192 partition Methods 0.000 title claims abstract description 19
- 230000011218 segmentation Effects 0.000 claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 claims abstract description 26
- 238000007493 shaping process Methods 0.000 claims abstract description 25
- 238000004080 punching Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 21
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 16
- 239000011265 semifinished product Substances 0.000 claims description 13
- 239000000047 product Substances 0.000 claims description 12
- 238000002407 reforming Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000009466 transformation Effects 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/001—Shaping combined with punching, e.g. stamping and perforating
-
- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- 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
- B21D53/00—Making other particular articles
- B21D53/38—Making other particular articles locksmith's goods, e.g. handles
- B21D53/40—Making other particular articles locksmith's goods, e.g. handles hinges, e.g. door hinge plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Securing Of Glass Panes Or The Like (AREA)
- Hinges (AREA)
Abstract
A kind of no bridge metal plate door hinge entirety partition type processing method, it is related to a kind of processing method of body hinge, including fixing piece manufacturing procedure, movable part manufacturing procedure, assembly staking process, wherein fixing piece manufacturing procedure includes blanking step, segmentation step, shaping step, punching step and the heat treatment step successively processed on press machine；The blanking step obtains L shape blanket；The segmentation step is to be split the bottom of L shape blanket along cut-off rule；The shaping step is the pedestal both wings that fine is divided to resulting L shape segmentation plate along cut-off rule press-bending at fixing piece.Since fixing piece of the invention is that reshaping forms after entirety is divided, it is not necessarily to riveting step, has the characteristics that at low cost, intensity is high, quality is stable, application easy to spread.
Description
Technical field
The present invention relates to a kind of processing method of body hinge, especially a kind of no bridge metal plate door hinge entirety partition type adds
Work method.
Background technique
For body hinge in order to which car door and vehicle body are connected, effect is to guarantee and keep the opposite position with vehicle body of car door
Set, guarantee and convenient for car door folding.This includes fixing piece and movable part without bridge metal plate door hinge.This is without bridge metal plate door hinge
Traditional diamond-making technique is first to divide fixing piece to two halves symmetric punching blank-forming, obtains conventional fasteners blank 1, is then riveted into
One entirety, obtains conventional fasteners 2, finally rivets again with the assembly of movable part 3, which has the following disadvantages it
Place: (1) process is more, at high cost: fixing piece will divide two halves symmetric punching blank-forming, also rivet, and process is more, cost
It is higher；(2) it is easy to produce riveting defect: due to needing to rivet, being easy to produce including seamed between manufactured head offset, plate faying face
Gap, manufactured head have crackle etc. to rivet defect；(3) intensity and quality stability are lower: since fixing piece is riveted by two halves,
And it is easy the presence of riveting defect, intensity and quality stability are lower.
Summary of the invention
The technical problem to be solved by the present invention is provide it is a kind of it is at low cost, without riveting, intensity and the stable no bridge of quality
Metal plate door hinge entirety partition type processing method
The technical solution for solving above-mentioned technical problem is: a kind of no bridge metal plate door hinge entirety partition type processing method, including solid
Determine part manufacturing procedure, movable part manufacturing procedure, assembly staking process, the fixing piece manufacturing procedure includes successively in press machine
On blanking step, segmentation step, shaping step, punching step and the heat treatment step processed；The blanking step
Obtain L shape blanket；The segmentation step is to be split the bottom of L shape blanket along cut-off rule；The shaping step is
Fine is divided into pedestal both wings of the resulting L shape segmentation plate along cut-off rule press-bending at fixing piece.
A further technical solution of the present invention is: the blanking step includes following content: blanking die is mounted on punching
On press, blank material is stamped out into L shape blanket.
A further technical solution of the present invention is: the L shape blanket with a thickness of H=5~15mm.
A further technical solution of the present invention is: the segmentation step includes following content:
First the center line along L shape blanket bottom thickness direction draws upper cut-off rule, then by the bottom edge of L shape blanket on press machine
Cut-off rule is split.
A further technical solution of the present invention is: the shaping step includes following content:
On press machine, the resulting L shape segmentation plate of segmentation step is bent into the pedestal both wings at fixing piece along cut-off rule, is obtained
Fixing piece semi-finished product.
The further technical solution of the present invention is: the punching step includes following content:
Continue on press machine, the fixing piece semi-finished product after shaping is stamped out into mounting hole in pedestal both wings respectively, and in support arm
On stamp out pin shaft hole.
The further technical solution of the present invention is: the heat treatment step includes following content:
Fixing piece semi-finished product after punching are subjected to normalized treatment, to eliminate stress and the increasing of material segmentation and reforming process generation
The intensity for adding material obtains fixing piece finished product.
The further technical solution of the present invention is: the blanking is fine blanking, it is divided into fine segmentation, is shaped as
Fine shaping, the press machine are precise punching machine.
Due to using the above structure, the present invention without bridge metal plate door hinge entirety partition type processing method and prior art phase
Than having the advantages that
1. without riveting
Since the present invention includes fixing piece manufacturing procedure, movable part manufacturing procedure, assembly staking process, wherein the fixation
Part manufacturing procedure includes the blanking step, segmentation step, shaping step, punching step successively processed on press machine, with
And heat treatment step；The blanking step obtains L shape blanket；The segmentation step is by the bottom of L shape blanket along segmentation
Line is split；The shaping step is that fine is divided to resulting L shape segmentation plate to bend along cut-off rule into fixing piece
Pedestal both wings.Therefore, fixing piece of the invention is that fine shaping forms again after entirety is divided, and is not necessarily to riveting step.
2. at low cost
Due to fixing piece manufacturing procedure of the invention include the blanking step successively processed on press machine, segmentation step,
Shaping step, punching step and heat treatment step；Wherein, blanking step obtains L shape blanket；Segmentation step is by L shape blanket
Bottom be split along cut-off rule；Shaping step is that fine is divided to resulting L shape segmentation plate to bend along cut-off rule at solid
Determine the pedestal both wings of part.Therefore, fixing piece of the invention is without first dividing two halves symmetric punching blank-forming, without riveting, from
And production cost can be reduced.
In addition, blanking step, segmentation step, shaping step have been all made of precision in fixing piece manufacturing procedure of the invention
Stamping technology can obtain the product with Precise outline size, woth no need to carry out the machining of surplus again, can further decrease
Production cost.
Furthermore in the blanking step of fixing piece manufacturing procedure of the present invention, what is obtained is L shape blanket, compared with the existing technology
The middle resulting Fig. 1 shape of two halves symmetric punching blank-forming, can greatly save material, be produced into can also further decrease
This.
3. intensity and quality are stablized
Fixing piece of the invention is that punching press shaping forms again after entirety is divided, and is not necessarily to riveting step, can avoid riveting defect, thus
Its intensity and quality stability can improved greatly.
In addition, parts processing compared with the existing technology reconnects since fixing piece of the invention is overall processing forming
Together, intensity and quality stability can also be further increased.
4. product quality is high
In fixing piece manufacturing procedure of the invention, blanking step, segmentation step, shaping step have been all made of fine blanking technique,
Its product quality processed height, good appearance.
In the following, in conjunction with the accompanying drawings and embodiments to the technology without bridge metal plate door hinge entirety partition type processing method of the present invention
Feature is further described.
Detailed description of the invention
Fig. 1: dividing the conventional fasteners blank structural schematic diagram that symmetric punching blank-forming obtains two halves in the prior art,
Fig. 2: the conventional fasteners structural schematic diagram obtained after in the prior art riveting two conventional fasteners blanks,
Fig. 3: the traditional product structural schematic diagram that will be obtained after conventional fasteners and movable part assembly riveting in the prior art；
Fig. 4: the L shape blanket structural schematic diagram that blanking step obtains in embodiment one,
Fig. 5: the L shape that segmentation step obtains in embodiment one divides plate structural schematic diagram,
Fig. 6: the fixing piece semi-finished product structure schematic diagram that shaping step obtains in embodiment one,
Fig. 7: the schematic diagram of product structure that will be obtained after fixing piece and movable part assembly riveting in embodiment one；
In above-mentioned attached drawing, each label declaration is as follows:
1- conventional fasteners blank, 2- conventional fasteners, 3- movable part, 4- pin shaft bush assembly,
5-L shape blanket, 6-L shape segmentation plate, 61- cut-off rule, 7- fixing piece finished product,
71- support arm, 711- pin shaft hole, 72- pedestal both wings, 721- mounting hole.
Specific embodiment
Embodiment one:
A kind of no bridge metal plate door hinge entirety partition type processing method, including fixing piece manufacturing procedure, movable part manufacturing procedure, dress
With staking process, in which:
(1) fixing piece manufacturing procedure described in the following steps are included:
1) blanking: design size blanking is pressed, blank material is obtained；
2) blanking: blanking die is mounted on press machine, and blank material is stamped out the L shape blanket 5 with Precise outline size, should
L shape blanket with a thickness of H=5mm, the blanking die is routine techniques；
3) divide:
First the center line along L shape blanket bottom thickness direction draws upper cut-off rule 61, then by the bottom of L shape blanket on press machine
It is split along cut-off rule, obtains L shape segmentation plate 6；
4) shaping:
Continue on press machine, fine divided into pedestal both wings of the resulting L shape segmentation plate along cut-off rule press-bending at fixing piece,
Obtain fixing piece semi-finished product；
5) punching:
Continue on press machine, the fixing piece semi-finished product after shaping are stamped out into mounting hole 721 in pedestal both wings 72 respectively, and
Pin shaft hole 711 is stamped out on support arm 71；
6) it is heat-treated:
Fixing piece semi-finished product after punching are subjected to normalized treatment, to eliminate stress and the increasing of material segmentation and reforming process generation
The intensity for adding material obtains fixing piece finished product 7.
(2) movable part manufacturing procedure described in routinely technology, is here no longer described in detail it.
(3) the assembly staking process described in includes the following contents:
On the support arm 71 of fixing piece finished product 7, by the pin shaft bush assembly 4 that is located in support arm pin shaft hole 711 by two activities
Part 3 is symmetrically mounted on the two sides of support arm 71, obtains shaped article --- without bridge metal plate door hinge.
Embodiment two:
A kind of no bridge metal plate door hinge entirety partition type processing method, substantially with embodiment example one, institute's difference exists this method
In: the blanking is fine blanking, is divided into fine segmentation, is shaped as fine shaping, and the press machine is precision stamping
Machine.The particular content of the present embodiment two is as follows:
A kind of no bridge metal plate door hinge entirety partition type processing method, including fixing piece manufacturing procedure, movable part manufacturing procedure, dress
With staking process, in which:
(1) fixing piece manufacturing procedure described in the following steps are included:
1) blanking: design size blanking is pressed, blank material is obtained；
2) fine blanking: blanking die is mounted on precise punching machine, and blank material precision stamping has been provided Precise outline size
L shape blanket 5, the L shape blanket with a thickness of H=15mm, the blanking die is routine techniques；
3) fine is divided:
First the center line along L shape blanket bottom thickness direction draws upper cut-off rule, then by the bottom of L shape blanket on precise punching machine
Portion carries out fine segmentation along cut-off rule, obtains L shape segmentation plate 6；
4) fine shaping:
Continue on precise punching machine, fine is divided into pedestal of the resulting L shape segmentation plate along cut-off rule press-bending at fixing piece
Both wings obtain fixing piece semi-finished product；
5) punching:
Continue on precise punching machine, the fixing piece semi-finished product after shaping stamped out into mounting hole 721 in pedestal both wings 72 respectively,
And pin shaft hole 711 is stamped out on support arm 71；
6) it is heat-treated:
Fixing piece semi-finished product after punching are subjected to normalized treatment, to eliminate stress and the increasing of material segmentation and reforming process generation
The intensity for adding material obtains fixing piece finished product 7.
(2) movable part manufacturing procedure described in routinely technology, is here no longer described in detail it.
(3) the assembly staking process described in includes the following contents:
On the support arm 71 of fixing piece finished product 7, by the pin shaft bush assembly 4 that is located in support arm pin shaft hole 711 by two activities
Part 3 is symmetrically mounted on the two sides of support arm 71, obtains shaped article --- without bridge metal plate door hinge.
As a kind of transformation of embodiment one or embodiment two, the L shape blanket with a thickness of 6,7,8,9,10,11,
Any value between 5~15mm such as 12 mm.
Claims (8)
1. a kind of no bridge metal plate door hinge entirety partition type processing method, including fixing piece manufacturing procedure, movable part manufacturing procedure,
Assemble staking process, it is characterised in that: the fixing piece manufacturing procedure includes the blanking successively processed on press machine
Step, segmentation step, shaping step, punching step and heat treatment step；The blanking step obtains L shape blanket；It is described
Segmentation step be to be split the bottom of L shape blanket along cut-off rule；The shaping step is that fine is divided to resulting L
Shape divides pedestal both wings of the plate along cut-off rule press-bending at fixing piece.
2. no bridge metal plate door hinge entirety partition type processing method according to claim 1, it is characterised in that: described falls
Material step includes following content: blanking die being mounted on press machine, blank material is stamped out L shape blanket.
3. no bridge metal plate door hinge entirety partition type processing method according to claim 2, it is characterised in that: the L
Shape blanket with a thickness of H=5~15mm.
4. no bridge metal plate door hinge entirety partition type processing method according to claim 1, it is characterised in that: point
Cutting step includes following content:
First the center line along L shape blanket bottom thickness direction draws upper cut-off rule, then by the bottom edge of L shape blanket on press machine
Cut-off rule is split.
5. no bridge metal plate door hinge entirety partition type processing method according to claim 1, it is characterised in that: described is whole
Shape step includes following content:
On press machine, the resulting L shape segmentation plate of segmentation step is bent into the pedestal both wings at fixing piece along cut-off rule, is obtained
Fixing piece semi-finished product.
6. no bridge metal plate door hinge entirety partition type processing method according to claim 5, it is characterised in that: described rushes
Hole step includes following content:
Continue on press machine, the fixing piece semi-finished product after shaping is stamped out into mounting hole in pedestal both wings respectively, and in support arm
On stamp out pin shaft hole.
7. no bridge metal plate door hinge entirety partition type processing method according to claim 6, it is characterised in that: the heat
Processing step includes following content:
Fixing piece semi-finished product after punching are subjected to normalized treatment, to eliminate stress and the increasing of material segmentation and reforming process generation
The intensity for adding material obtains fixing piece finished product.
8. according to claim 1 to described in 7 any claims without bridge metal plate door hinge entirety partition type processing method, it is special
Sign is: the blanking is fine blanking, is divided into fine segmentation, is shaped as fine shaping, and the press machine is precision
Press machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910556957.7A CN110405056A (en) | 2019-06-25 | 2019-06-25 | Without bridge metal plate door hinge entirety partition type processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910556957.7A CN110405056A (en) | 2019-06-25 | 2019-06-25 | Without bridge metal plate door hinge entirety partition type processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110405056A true CN110405056A (en) | 2019-11-05 |
Family
ID=68359861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910556957.7A Pending CN110405056A (en) | 2019-06-25 | 2019-06-25 | Without bridge metal plate door hinge entirety partition type processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110405056A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4433949A (en) * | 1981-08-31 | 1984-02-28 | Hallock Robert L | Split head fastener |
| JPS61182839A (en) * | 1985-02-08 | 1986-08-15 | Hitachi Ltd | Manufacturing method of long shapes |
| CN85101130A (en) * | 1985-04-01 | 1987-01-10 | 株式会社日立制作所 | Long profiles and manufacture method＜del/ thereof 〉 |
| CN104411423A (en) * | 2012-06-29 | 2015-03-11 | 株式会社关冲压机厂 | End splitting method for metal plate or metal rod, metal article produced by end splitting method, and method for bonding same |
| CN205025918U (en) * | 2015-09-25 | 2016-02-10 | 上海安宇峰实业有限公司 | No bridge type hinge |
-
2019
- 2019-06-25 CN CN201910556957.7A patent/CN110405056A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4433949A (en) * | 1981-08-31 | 1984-02-28 | Hallock Robert L | Split head fastener |
| JPS61182839A (en) * | 1985-02-08 | 1986-08-15 | Hitachi Ltd | Manufacturing method of long shapes |
| CN85101130A (en) * | 1985-04-01 | 1987-01-10 | 株式会社日立制作所 | Long profiles and manufacture method＜del/ thereof 〉 |
| CN104411423A (en) * | 2012-06-29 | 2015-03-11 | 株式会社关冲压机厂 | End splitting method for metal plate or metal rod, metal article produced by end splitting method, and method for bonding same |
| CN205025918U (en) * | 2015-09-25 | 2016-02-10 | 上海安宇峰实业有限公司 | No bridge type hinge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208083194U (en) | A kind of anti-rebound flanging die | |
| US11020785B2 (en) | Method and apparatus for manufacturing press component | |
| CN115430773B (en) | Continuous stamping method for high-low side square-strip folding structural part | |
| CN104438598B (en) | A kind of Novel light truck body hinge support processing technique | |
| JPWO2016171230A1 (en) | PRESS-MOLDED PRODUCTION METHOD, PRESS-MOLDED PRODUCT, AND PRESS DEVICE | |
| CN109590429A (en) | A kind of manufacturing process and mold of bias adjustable vane | |
| CN202894047U (en) | Bent forming and molding die of lower frame of automobile anti-locked braking system (ABS) | |
| CN106694789A (en) | Die forging process and equipment of besides-star wheel and star wheel blanks for automobile drive shaft | |
| CN105903849A (en) | Vehicle one-piece toe link processing method | |
| CN110405056A (en) | Without bridge metal plate door hinge entirety partition type processing method | |
| JPWO2014167687A1 (en) | Press-formed product and manufacturing method thereof | |
| CN208628258U (en) | Seat side panel punching, flipping, hole calibration dies | |
| CN212042286U (en) | Flanging, shaping and side punching composite die for automobile rear coaming | |
| CN103624144A (en) | Sheet metal forming technology of front floor threshold girder of automobile | |
| JP7396550B1 (en) | Press molding method and method for manufacturing press molded products | |
| CN220760765U (en) | Stamping part die for integrated automobile | |
| JP2010005651A (en) | Die for press forming of metallic member of hat-shaped section, and press forming method thereof | |
| WO2023127695A1 (en) | Press-forming apparatus and method for producing press-formed article | |
| JP3120068B2 (en) | Rocker arm manufacturing method | |
| CN211564174U (en) | Blanking die for long and narrow terminal | |
| CN207325766U (en) | A kind of electrical equipment wiring harness fixing bracket bends embossing die | |
| CN113976759A (en) | Common-mode stamping production method for left and right parts of automobile mudguard | |
| CN205463892U (en) | Car hinge reinforcing plate multiple operation production frock | |
| CN207797336U (en) | Motor mounting plate assembly and cabinet air conditioner | |
| CN120838934B (en) | A continuous stamping method for side-flange protrusions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Liangjie Inventor after: Wei Xiuping Inventor after: Zhang Bowen Inventor after: Luo Zhen Inventor after: Liang Hailin Inventor after: Wang Liming Inventor before: Zhang Liangjie Inventor before: Wei Xiuping Inventor before: Zhang Bowen Inventor before: Luo Zhen Inventor before: Liang Hailin |
|
| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191105 |
|
| RJ01 | Rejection of invention patent application after publication |