CN109093946A - Product surface processing method - Google Patents
Product surface processing method Download PDFInfo
- Publication number
- CN109093946A CN109093946A CN201710471948.9A CN201710471948A CN109093946A CN 109093946 A CN109093946 A CN 109093946A CN 201710471948 A CN201710471948 A CN 201710471948A CN 109093946 A CN109093946 A CN 109093946A
- Authority
- CN
- China
- Prior art keywords
- cast gate
- needle
- processing method
- surface processing
- product surface
- 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
- 238000003672 processing method Methods 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000003746 surface roughness Effects 0.000 claims abstract description 11
- 238000005498 polishing Methods 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 210000000080 chela (arthropods) Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/16—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding sharp-pointed workpieces, e.g. needles, pens, fish hooks, tweezers or record player styli
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/02—Lapping machines or devices; Accessories designed for working surfaces of revolution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
- B29C33/3857—Manufacturing moulds, e.g. shaping the mould surface by machining by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts
- B29C33/3892—Preparation of the model, e.g. by assembling parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C2045/2719—Fixing or locking of nozzles or sprue bushings in the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C2045/2764—Limited contact between nozzle and mould
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of product surface processing method, for being handled using cast gate wall surface of the needle to mold, the described method comprises the following steps: carrying out the preliminary bedding-in of the needle and the cast gate；Noticeable degree device is connected, control needle retreats and opens cast gate；Abrasive pastes are added from the cast gate and seal the cast gate using sealing element；It controls the needle and carries out reciprocal telescopic movement, the opening and closing circulation of the cast gate is realized, until the surface roughness of the cast gate reaches scheduled standard.This method can be obviously improved the presentation quality of product and solve occur the problems such as burr or not firm sealing around cast gate.
Description
Technical field
The present invention relates to injection molding technology fields, and in particular to a kind of product surface processing method.
Background technique
Injection molding is a kind of processing method used when producing certain complex-shaped components in batches, currently, being molded into
Pattern tool generally comprises preceding mould, rear mold and ejecting mechanism, wherein shape forming cavity between preceding mould and rear mold is provided on preceding mould and type
The hot runner that chamber communicates, by hot runner toward the injection molding material of type chamber injection melting so that shaped article is opened after waiting products cooling
And product is ejected by ejecting mechanism.
However, by after the product membrane of hot runner injection molding, the part being connected with hot runner disconnect after be in it is coarse not
It is flat-shaped, it needs in addition to trim, then carries out the subsequent technique such as punching again, processing step is cumbersome, production efficiency is not high, shaped article
Precision is low, presentation quality is not good enough.
Cast gate is also known as feed inlet, is the channel of connecting mold runner Yu type chamber, including down gate, side gate are (also known as
Rectangle is with one voice) and spot pouring mouth (also known as needle cast gate), the selection of cast gate appropriately whether, be directly related to the quality of injection-molded item,
In, spot pouring mouth is common pouring gate structure form in plastics injection mould, can be applied to various forms of products, near spot pouring mouth
Stress is small, and whole gate vestiges are small, when demoulding spot pouring mouth can automatic breaking, the trace left on plastic is unobvious, does not influence
The beauty on plastic surface.Therefore, for the injecting products more demanding for some appearances, the method generally used is to utilize
Spot pouring mouth is directly put and is injected on products appearance.By taking automobile tail light as an example, since taillight is usually dual-color forming, poured with side
The form of mouth is more complicated, therefore majority is directly put in product surface using spot pouring mouth on the market.Since spot pouring mouth is located at appearance side,
The appearance for directly affecting product, therefore, it is necessary to the quality to spot pouring mouth to make stringent control, debug initial stage in new product, often due to
Mould gate does not reach position with needle and causes cast gate sealing not firm, causes the spot pouring mouth of product after forming imperfect or point
It is jagged around cast gate.
The cast gate of existing mold is generally come out by edm forming, and surface has certain spark line.In order to eliminate spark
Line, currently used method match mould generally by pincers worker by hand, and pincers worker is ground off spark line using file, and with red lead mesh
Matching degree depending on observing needle and mould gate, judges whether grinding in place.The prior art has the following problems:
(1) mould is matched by pincers worker by hand, is completely dependent on employee's operating experience, and by visual observation red lead come judge needle with
The contact situation of mold has certain subjectivity.
(2) generally pass through file bedding-in cast gate when matching mould by hand, the big plane of file cannot be fully solved the small of electric spark
Concavo-convex position.
(3) it needs to carry out sealing verifying by installation die trial equipment, other molds is interfered to produce.
(4) it when die trial as discovery sealing is problematic, needs to unload die trial equipment repeatedly, then bedding-in repeatedly, wastes die trial
Material and delay trial assembly time.
Summary of the invention
The purpose of the embodiment of the present invention includes providing a kind of product surface processing method, and this method can be obviously improved product
Presentation quality simultaneously solves occur the problems such as burr or not firm sealing around cast gate.
The embodiment of the present invention provides a kind of product surface processing method, for being carried out using cast gate wall surface of the needle to mold
Processing, the described method comprises the following steps:
Carry out the preliminary bedding-in of the needle and the cast gate；
Abrasive pastes are added from the cast gate and seal the cast gate using sealing element；
It controls the needle and carries out reciprocal telescopic movement, the opening and closing circulation of the cast gate is realized, until the table of the cast gate
Surface roughness reaches scheduled standard.
Preferably, the step of preliminary bedding-in for carrying out the needle and the cast gate includes:
It is polished using file the needle；
Whether within the range of permission the matching degree of the needle and the cast gate is judged, if not in the range of permission
It is interior, then continue to polish, until the matching degree of the needle and the cast gate meets the requirements.
Preferably, the method also includes:
Connect noticeable degree device；And
The needle is controlled to retreat and open the cast gate.
Preferably, described the step of sealing the cast gate using the sealing element, includes:
The sealing element is pasted in the cast gate side opposite with the needle.
Preferably, the sealing element is seamless adhesive tape.
Preferably, the control needle carries out reciprocal telescopic movement, the opening and closing circulation of the cast gate is realized, until institute
It states the step of the surface roughness of cast gate reaches scheduled standard and includes:
Control the reciprocal telescopic movement that the needle carries out a polishing period；
After the reciprocal telescopic movement in a polishing period, the sealing element is torn, abrasive pastes is added and seals institute
State cast gate；
Control the reciprocal telescopic movement that the needle carries out next polishing period；
The reciprocal telescopic movement in N number of polishing period is executed in the manner described above, until the surface roughness of the cast gate reaches
To scheduled standard.
Preferably, needle described in one polishing period executes reciprocal telescopic movement 100 times, in the table of the cast gate
Surface roughness reaches needle when scheduled standard and has the reciprocal telescopic movement for executing 5 polishing periods altogether.
Preferably, the method also includes:
Tear the sealing element；And
The iron powder generated in remaining abrasive pastes and needle reciprocal telescopic movement is cleared up using mold cleaning water.
Preferably, the granularity of the abrasive pastes is 5-7 μm.
Preferably, the abrasive pastes select 3000# abrasive pastes.
Product surface processing method provided in an embodiment of the present invention, enters concavo-convex position using abrasive pastes small molecule and is ground
Mill, solve the problems, such as not reach position as needle and mould gate and caused by sealing it is not firm, to solve shaped article pair
Answer spot pouring mouth imperfect or spot pouring mouth around there is the problem of burr.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is using a kind of structural schematic diagram of the mold of product surface processing method provided in an embodiment of the present invention.
Fig. 2 is the partial enlarged view of mold shown in FIG. 1.
Fig. 3 is the structural schematic diagram of mold adhesive seal part shown in FIG. 1.
Fig. 4 is a kind of flow diagram of product surface processing method provided in an embodiment of the present invention.
Specific embodiment
Further to illustrate the present invention to reach the technical means and efficacy that predetermined purpose is taken, below in conjunction with attached drawing
And preferred embodiment, to a kind of specific embodiment of product surface processing method proposed according to the present invention, method, step,
Structure, feature and effect, detailed description is as follows.
For the present invention aforementioned and other technology contents, feature and effect refer to the preferable reality of schema in following cooperation
Applying can clearly be presented in example detailed description.By the explanation of specific embodiment, when predetermined mesh can be reached to the present invention
The technical means and efficacy taken be able to more deeply and it is specific understand, however institute's accompanying drawings are only to provide with reference to and say
It is bright to be used, it is not intended to limit the present invention.
Please also refer to Fig. 1 to Fig. 3, Fig. 1 is using a kind of product surface processing method provided in an embodiment of the present invention
The structural schematic diagram of mold, Fig. 2 are the partial enlarged view of mold shown in FIG. 1.As shown in Figure 1 to Figure 2, which includes needle-valve
Formula hot runner system and front die component, which includes hot flow path 13, the valve that is arranged in the hot flow path 13
Needle 17 and hot runner manifold 12 for fixing the hot flow path 13, which includes preceding mold mounting plate 11, preceding mould body 14
With preceding mould mold insert 15, which is used to mold being installed on injection molding machine, the preceding mould body 14 and preceding mould mold insert 15
For the profiled part of Surface Appearance, the cast gate of mold, in the present embodiment, the cast gate of mold are formed on the preceding mould mold insert 15
For spot pouring mouth；The needle 17 sends control instruction by noticeable degree device, and is done by the driving of 13 inner cylinder of hot flow path past
Multiple stretching motion, to realize the opening and closing of cast gate.Product surface processing method provided in an embodiment of the present invention is mainly used for pair
The cast gate wall surface of mold is handled, to remove the spark line for pouring discharge surface, to avoid the spot pouring mouth of product after molding endless
Occur around whole or spot pouring mouth burr or as mould gate and needle do not reach position and caused by sealing it is not firm the problems such as.
Referring to FIG. 4, a kind of product surface processing method provided in an embodiment of the present invention the following steps are included:
Step S401 carries out the preliminary bedding-in of the needle Yu the cast gate；
The purpose of step S401 primarily within the range of permission by the control of the matching degree of needle and cast gate, to prevent
The excessively coarse caused interference phenomenon of Surface Appearance.
Specifically, the operation of preliminary bedding-in includes:
It is polished using file the needle, and judges that the matching degree of needle and cast gate is using red lead visual method
It is no within the range of permission, if not continuing to polish if, until the matching degree of needle and cast gate meets the requirements.
Step S402, connects noticeable degree device, and control needle retreats and opens cast gate；
Abrasive pastes are added from cast gate and seal cast gate using sealing element 16 (see Fig. 3) by step S403；
In step S403, it is 5-7 μm of abrasive pastes, such as 3000# abrasive pastes which, which selects granularity,.It is close utilizing
It is the side adhesive seal part 16 opposite with needle in cast gate that sealing 16, which seals the operation taken when cast gate, to prevent abrasive pastes stream
It loses, to more can guarantee the removal of the bedding-in and cast gate surface-fire decorative pattern of cast gate and needle 17.In embodiments of the present invention,
The sealing element 16 is seamless adhesive tape.
Step S404 starts noticeable degree device, carries out reciprocal telescopic movement using noticeable degree device control needle, realizes institute
The opening and closing circulation for stating cast gate, until the surface roughness of cast gate reaches scheduled standard.
Specifically, step S404 includes:
The reciprocal telescopic movement in a polishing period is carried out using noticeable degree device control needle；
After the reciprocal telescopic movement in a polishing period, sealing element 16 is torn, abrasive pastes is added and seals cast gate；
Control needle carries out the reciprocal telescopic movement in next polishing period；
(mode for polishing, adding abrasive pastes, polishing again) executes the reciprocal telescopic fortune in N number of polishing period in the manner described above
It is dynamic, until the surface roughness of cast gate reaches scheduled standard.
In embodiments of the present invention, the number that needle 17 executes reciprocal telescopic movement in a polishing period is 100 times；?
When the surface roughness of cast gate reaches scheduled standard, needle, which has altogether, performs the reciprocal telescopic movement in 5 polishing periods, i.e. valve
Needle 17 performs 500 reciprocal telescopic movements in total.
Step S405 tears the sealing element 16, is cleared up in remaining abrasive pastes and needle reciprocal telescopic and is produced using mold cleaning water
Raw iron powder.
Product surface processing method provided in an embodiment of the present invention enters the concave-convex position of spark line using abrasive pastes small molecule
Set and ground, solve the problems, such as not reach position as needle and mould gate and caused by sealing it is not firm, thus solve at
There is the problem of burr around type product spot pouring mouth.
The above, only be invention preferred embodiment, be not intended to limit the present invention in any form, although
The present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any person skilled in the art,
Without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or are modified to
With the equivalent embodiment of variation, but without departing from the technical solutions of the present invention, according to the technical essence of the invention to above
Any simple modification, equivalent change and modification made by embodiment, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of product surface processing method, for being handled using cast gate wall surface of the needle to mold, which is characterized in that institute
State method the following steps are included:
Carry out the preliminary bedding-in of the needle and the cast gate；
Abrasive pastes are added from the cast gate and seal the cast gate using sealing element；
It controls the needle and carries out reciprocal telescopic movement, the opening and closing circulation of the cast gate is realized, until the surface of the cast gate is thick
Rugosity reaches scheduled standard.
2. product surface processing method according to claim 1, which is characterized in that carry out the needle and the cast gate
The step of preliminary bedding-in includes:
It is polished using file the needle；
Whether within the range of permission to judge the matching degree of the needle and the cast gate, if not in allowed limits,
Then continue to polish, until the matching degree of the needle and the cast gate meets the requirements.
3. product surface processing method according to claim 1, which is characterized in that the method also includes:
Connect noticeable degree device；And
The needle is controlled to retreat and open the cast gate.
4. product surface processing method according to claim 1, which is characterized in that seal the cast gate using sealing element
Step includes:
The sealing element is pasted in the cast gate side opposite with the needle.
5. product surface processing method according to claim 4, which is characterized in that the sealing element is seamless adhesive tape.
6. product surface processing method according to claim 1, which is characterized in that control the needle and carry out reciprocal telescopic
Movement realizes the opening and closing circulation of the cast gate, until the surface roughness of the cast gate includes: the step of reaching scheduled standard
Control the reciprocal telescopic movement that the needle carries out a polishing period；
After the reciprocal telescopic movement in a polishing period, tears the sealing element, addition abrasive pastes and seal described pour
Mouthful；
Control the reciprocal telescopic movement that the needle carries out next polishing period；
The reciprocal telescopic movement in N number of polishing period is executed in the manner described above, until the surface roughness of the cast gate reaches pre-
Fixed standard.
7. product surface processing method according to claim 6, which is characterized in that the needle described in a polishing period
It executes reciprocal telescopic movement 100 times, when the surface roughness of the cast gate reaches scheduled standard, the needle executes altogether 5
The reciprocal telescopic movement in a polishing period.
8. product surface processing method according to claim 1, which is characterized in that the method also includes:
Tear the sealing element；And
The iron powder generated in remaining abrasive pastes and needle reciprocal telescopic movement is cleared up using mold cleaning water.
9. product surface processing method according to claim 1, which is characterized in that the granularity of the abrasive pastes is 5-7 μm.
10. according to claim 1 or product surface processing method described in 9, which is characterized in that the abrasive pastes select 3000#
Abrasive pastes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471948.9A CN109093946A (en) | 2017-06-20 | 2017-06-20 | Product surface processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471948.9A CN109093946A (en) | 2017-06-20 | 2017-06-20 | Product surface processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109093946A true CN109093946A (en) | 2018-12-28 |
Family
ID=64795901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710471948.9A Pending CN109093946A (en) | 2017-06-20 | 2017-06-20 | Product surface processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109093946A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2868510Y (en) * | 2006-02-22 | 2007-02-14 | 长安汽车（集团）有限责任公司 | Cutter for working small conic hole |
| CN206140286U (en) * | 2016-11-07 | 2017-05-03 | 武汉通畅汽车电子照明有限公司 | Point runner grinds guiding orientation auxiliary device |
| CN106626266A (en) * | 2017-01-03 | 2017-05-10 | 哈希斯热流道科技（苏州）有限公司 | Sprue valve needle action device of hot runner injection mold |
-
2017
- 2017-06-20 CN CN201710471948.9A patent/CN109093946A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2868510Y (en) * | 2006-02-22 | 2007-02-14 | 长安汽车（集团）有限责任公司 | Cutter for working small conic hole |
| CN206140286U (en) * | 2016-11-07 | 2017-05-03 | 武汉通畅汽车电子照明有限公司 | Point runner grinds guiding orientation auxiliary device |
| CN106626266A (en) * | 2017-01-03 | 2017-05-10 | 哈希斯热流道科技（苏州）有限公司 | Sprue valve needle action device of hot runner injection mold |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181228 |
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| RJ01 | Rejection of invention patent application after publication |