CN107756158A - A kind of processing unit (plant) and its processing method for improving roller surface cleannes - Google Patents
A kind of processing unit (plant) and its processing method for improving roller surface cleannes Download PDFInfo
- Publication number
- CN107756158A CN107756158A CN201610676446.5A CN201610676446A CN107756158A CN 107756158 A CN107756158 A CN 107756158A CN 201610676446 A CN201610676446 A CN 201610676446A CN 107756158 A CN107756158 A CN 107756158A
- Authority
- CN
- China
- Prior art keywords
- roll
- case body
- cleannes
- plant
- processing unit
- 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
Classifications
-
- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/16—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged
- B24B5/167—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged for rolls with large curvature radius, e.g. mill rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
- B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a kind of processing unit (plant) and its processing method for improving roller surface cleannes, it is connected on the lathe bed of grinding machine, including case body, hold-down mechanism, hydraulic mechanism and surface disposal facility, hydraulic mechanism is above case body, case body is connected on the lathe bed of grinding machine by hydraulic mechanism, one end of surface disposal facility is connected in a side of case body by hold-down mechanism, and located at the lower section of case body, surface disposal facility includes steel plate and sand paper, the upper surface of steel plate is in contact with case body, sand paper is connected in the lower surface of steel plate, and form an entirety with steel plate, the lower surface of sand paper to processing roll surface cleannes.The present invention can reduce the generation of roll powder in the operation of rolling, be produced so as to reduce the belt steel surface mottling defect caused by the decline of roller surface cleannes, while the decay of gloss level of roll is decreased, so as to improve the wearability of roll.
Description
Technical field
The present invention relates to roller surface working process technology, and roller surface cleannes are improved more specifically to one kind
Processing unit (plant) and its processing method.
Background technology
With the increase of the market demand, client carries relatively to strip surface quality, and the requirement of belt steel surface aberration
Height, and the surface quality of roll is embodied directly on belt steel surface, so the quality of belt steel surface and the surface matter of roll
Measure closely bound up.
Found according to live follow-up study, first, in terms of cleannes, influence of the roller surface to strip cleannes, newly
Roll on after machine in 0-500 tons, the surface cleanness of strip is between 80-85；On the surface of 500-1000 ton hour strips
Cleannes are between 65-60；1000-2000 ton hour strips surface cleanness between 55-60；In 2000-3000 ton hours
The surface cleanness of strip is between 40-50.If the surface cleanness of strip is less than less than 60, to the clear of next process unit
Washing pressure will improve, it is most likely that belt steel surface mottling occurs, influences the qualification rate of product.From above-mentioned data, roll
Bad risk, therefore the roll that can only more renew will be produced in 2000-3000 ton hours, thereby reduces every roll
Milimeter number is rolled, the time of mill roll is also increased in the unit interval, so as to reduce yield.
Second, in terms of roughness, with the increase of the market demand, user is also relative to the roughness requirements of belt steel surface
Increase, the rhythm of production of unit is also accelerated therewith, and thus the standby roller quality to grinding roller workshop proposes higher requirement.To band
The defects of steel surface carry out micro components analysis after find, most of defect composition is identical with the material of roll, then to texturing after
Roll and to after lower machine use roll micro-analysis contrast, after contrast find roll on spike polished disappearance (see Fig. 1
Middle a parts), it follows that conclusion, most of source of steel strip surface defect are remained after Texturing Surface of Roll rolls a period of time
Powder.
Scene tracking gloss level of roll decay, roughness declines 10% after finding working roll roll 1000 tons of strips of rolling,
Roughness declines 5% again after 1000 tons of strips of system of rerolling, and roughness declines 2.5% again after the 1000 tons of strips of system that reroll.From micro-
Analyzed in sight, the peak point in peak counts (pc is the peak value of roughness in 1cm) value is easiest to abrasion, and rolls
The decay of roller roughness is rapidly crucial.When roll comes into operation and strip phase mutual friction, do not entering into roughness decline it is slow
Before period, roughness is just dropped to outside usable range, it is necessary to is put into production again after roll change, this is that milling train is coarse using roll
Degree declines the true cause of fast frequently roll change.
Therefore in order to solve the problems, such as that mill roll is frequent, reduce milling train and decayed using gloss level of roll, so needing one
Subsequent technique after individual texturing technique, could meet the requirement of milling train.And pass through the method for re-optimization roller surface after feather plucking, solution
Certainly milling train is decayed too fast problem using gloss level of roll.
The content of the invention
For drawbacks described above present in prior art, it is an object of the invention to provide one kind to improve roller surface cleannes
Processing unit (plant) and its processing method, the generation of roll powder in the operation of rolling can be reduced, so as to reduce because of roller surface
Belt steel surface mottling defect caused by the decline of cleannes produces, while the decay of gloss level of roll is decreased, so as to
Improve the wearability of roll.
To achieve the above object, the present invention adopts the following technical scheme that：
On the one hand, a kind of processing unit (plant) for improving roller surface cleannes, is connected on the lathe bed of grinding machine, including shell shell
Body, hold-down mechanism, hydraulic mechanism and surface disposal facility, for hydraulic mechanism above case body, case body passes through hydraulic pressure
Mechanism is connected on the lathe bed of grinding machine, and one end of surface disposal facility is connected in a side of case body by hold-down mechanism, and sets
In the lower section of case body, surface disposal facility includes steel plate and sand paper, and the upper surface of steel plate is in contact with case body, sand paper
Be connected in the lower surface of steel plate, and an entirety formed with steel plate, the lower surface of sand paper to processing roll surface cleannes.
Also include spraying mechanism, located at another side of case body, spraying mechanism includes shower pipe and is connected in spray
Several shower nozzles on pipe.
The inner surface of described case body is the half-circle-arc shape with roll outer surface phase.
Soft liner is additionally provided between the inner surface and steel plate of described case body.
Described hold-down mechanism includes pressing plate and adjustment screw, and pressing plate and leads to one end of pressing surface processing mechanism
Cross the side that adjustment screw is connected in case body.
Described hydraulic mechanism includes pressure sensor and hydraulic stem, and pressure sensor is located at the top of case body, and
It is connected in by hydraulic stem on the lathe bed of grinding machine.
Described steel plate is steel spring plate, thickness 0.5mm.
Described sand paper is metal sand paper, thickness 9um.
On the other hand, a kind of processing method for improving roller surface cleannes, comprises the following steps：
S1. roll is placed on grinding machine, be connected at the roll neck of roll with the driver plate on grinding machine, then with thimble by roll
Front and back end is held out against；
S2. drive driver plate to rotate by the driving lever on grinding machine, roll is also rotated together；
S3. after setting numerical value on pressure sensor, control hydraulic stem drives case body to push, and makes sand paper fitting parcel
On the outer round surface of roll, and carry out the grinding processing of roller surface；
S4. after the setting value for reaching pressure sensor, hydraulic stem stops pushing, and opens spraying mechanism, rinses grinding status
Under roll；
S5. after the completion of being ground, hydraulic stem drives case body to rise, and stops spraying mechanism, takes out roll.
In above-mentioned technical scheme, the present invention has following beneficial effect：
1. the present invention reduces milling train because roll change caused by cleannes decay, reduces roll changing time；
2. the present invention improves the cleannes of roll, reduce the generation of roll marks；
3. the decay that the present invention reduces roughness extends rolling milimeter number, reduce the stock removal of roll.
Brief description of the drawings
Fig. 1 is the enlarged diagram of existing roller surface；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is the side view of the present invention；
Fig. 4 is the schematic diagram of working condition of the present invention；
Fig. 5 is the enlarged diagram after roller surface working process.
Embodiment
Technical scheme is further illustrated with reference to the accompanying drawings and examples.
Incorporated by reference to shown in Fig. 2 to Fig. 5, a kind of processing unit (plant) for improving roller surface cleannes provided by the present invention, connect
It is connected on the lathe bed of grinding machine, including case body 1, hold-down mechanism, hydraulic mechanism and surface disposal facility, hydraulic mechanism is located at outer
The top of the upper surface of shell housing 1, case body 1 are connected on the lathe bed of grinding machine by hydraulic mechanism, one end of surface disposal facility
A side of case body 1 is connected in by hold-down mechanism, and located at the lower section of the lower surface of case body 1, surface disposal facility bag
Steel plate 2 and sand paper 3 are included, the upper surface of steel plate 2 is in contact with the lower surface of case body 1, and sand paper 3 is connected on the lower surface of steel plate 2,
And an entirety is formed with steel plate 2, the lower surface of sand paper 3 is to the cleannes on the surface of processing roll 4, processing unit (plant) of the invention
It is to be pushed from the top of roll 4, sand paper 3 is bonded using the elasticity of steel plate 2 and be wrapped on the surface of roll 4, then pass through
Rotary roller 4, allow the surface of roll 4 to be ground on sand paper 3, roll 4 is first removed before work more easy to wear on its surface
Spike (as shown in Figure 5), so as to reduce the powder caused by roll 4 in the operation of rolling, and due to the surface cleanness of roll 4
Decline and cause mottling defect caused by belt steel surface.
Preferably, present invention additionally comprises spraying mechanism, located at another side of case body 1, spraying mechanism includes spray
Pipe pipe 5 and the several shower nozzles 6 being connected on shower, during roll 4 is ground, opens spraying mechanism and roll 4 is entered
Row rinses, and can clean caused powder in grinding.
Preferably, the inner surface of described case body 1 is the half-circle-arc shape with the outer surface phase of roll 4, preferably
It is easy to surface disposal facility fitting parcel roll 4, in addition, the length of case body 1 and surface disposal facility and the length of roll 4
Set unanimously, also allow for the surface grinding uniformity for the treatment of of roll 4.
Preferably, soft liner 7 is additionally provided between the inner surface and steel plate 2 of described case body 1, together with steel plate 2
Auxiliary sand paper 3 preferably fitting parcel roll 4 can be buffered.
Preferably, described hold-down mechanism includes pressing plate 8 and adjustment screw 9, adjustment screw 9 is provided with several, and pressing plate 9 is used
With one end of pressing surface processing mechanism, and it is connected in a side of case body 1 by adjusting screw 9 and compressing, is conveniently replaceable steel
Plate 2 and sand paper 3.
Preferably, described hydraulic mechanism includes pressure sensor 10 and hydraulic stem 11, pressure sensor 10 is located at shell
The top of housing 1, and being connected in by hydraulic stem 11 on the lathe bed of grinding machine, pressure sensor 10 is controlling pushing for hydraulic stem 11
Pressure, hydraulic stem 11 is controlling the overall rising of processing unit (plant) and push.
Preferably, described steel plate 2 is steel spring plate, thickness 0.5mm, described sand paper 3 is metal sand paper, and thickness is
9um, steel plate 2 and sand paper 3 allow to preferably bend, on the surface of fitting parcel roll 4.
Using a kind of processing method of raising roller surface cleannes of the present invention, comprise the following steps：
S1. roll 4 is placed on grinding machine, be connected at the roll neck of roll 4 with the driver plate on grinding machine, then with thimble by roll
4 front and back end is held out against.
S2. drive driver plate to rotate by the driving lever on grinding machine, roll 4 is also rotated with driver plate.
S3. after setting numerical value on pressure sensor 10, control hydraulic stem 11 drives case body 1 to push, and makes sand paper 3 in steel
Under the buffering of plate 2 and soft liner 7 auxiliary, fitting is wrapped on the outer round surface of roll 4, and carries out the grinding on the surface of roll 4
Working process.
S4. after the setting numerical value for reaching pressure sensor 10, hydraulic stem 11 stops pushing, and at this moment opens spraying mechanism, rushes
The roll 4 washed under grinding status.
S5. after the completion of being ground, hydraulic stem 11 drives case body 11 to rise, and stops spraying mechanism, takes out roll 4.
Those of ordinary skill in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification will all fall in the range of claims of the present invention.
Claims (9)
1. a kind of processing unit (plant) for improving roller surface cleannes, is connected on the lathe bed of grinding machine, it is characterised in that including shell
Housing, hold-down mechanism, hydraulic mechanism and surface disposal facility, for hydraulic mechanism above case body, case body passes through liquid
Press mechanism is connected on the lathe bed of grinding machine, and one end of surface disposal facility is connected in a side of case body by hold-down mechanism, and
Located at the lower section of case body, surface disposal facility includes steel plate and sand paper, and the upper surface of steel plate is in contact with case body, sand
Paper is connected in the lower surface of steel plate, and forms an entirety with steel plate, the lower surface of sand paper to processing roll surface cleannes.
2. a kind of processing unit (plant) for improving roller surface cleannes as claimed in claim 1, it is characterised in that also include spray
Mechanism, located at another side of case body, spraying mechanism includes shower pipe and the several shower nozzles being connected on shower.
A kind of 3. processing unit (plant) for improving roller surface cleannes as claimed in claim 1, it is characterised in that described shell
The inner surface of housing is the half-circle-arc shape with roll outer surface phase.
A kind of 4. processing unit (plant) for improving roller surface cleannes as claimed in claim 3, it is characterised in that described shell
Soft liner is additionally provided between the inner surface and steel plate of housing.
A kind of 5. processing unit (plant) for improving roller surface cleannes as claimed in claim 1, it is characterised in that described compression
Mechanism includes pressing plate and adjustment screw, and pressing plate and is connected in shell to one end of pressing surface processing mechanism by adjusting screw
One side of housing.
A kind of 6. processing unit (plant) for improving roller surface cleannes as claimed in claim 1, it is characterised in that described hydraulic pressure
Mechanism includes pressure sensor and hydraulic stem, and pressure sensor is located at the top of case body, and is connected in grinding machine by hydraulic stem
Lathe bed on.
A kind of 7. processing unit (plant) for improving roller surface cleannes as claimed in claim 1, it is characterised in that described steel plate
For steel spring plate, thickness 0.5mm.
A kind of 8. processing unit (plant) for improving roller surface cleannes as claimed in claim 1, it is characterised in that described sand paper
For metal sand paper, thickness 9um.
9. a kind of processing method as claimed in claim 1 for improving roller surface cleannes, it is characterised in that including following step
Suddenly：
S1. roll is placed on grinding machine, be connected at the roll neck of roll with the driver plate on grinding machine, then with thimble by before and after roll
End is held out against；
S2. drive driver plate to rotate by the driving lever on grinding machine, roll is also rotated together；
S3. after setting numerical value on pressure sensor, control hydraulic stem drives case body to push, and is wrapped in sand paper fitting and rolls
On the outer round surface of roller, and carry out the grinding processing of roller surface；
S4. after the setting value for reaching pressure sensor, hydraulic stem stops pushing, and opens spraying mechanism, rinses under grinding status
Roll；
S5. after the completion of being ground, hydraulic stem drives case body to rise, and stops spraying mechanism, takes out roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676446.5A CN107756158A (en) | 2016-08-17 | 2016-08-17 | A kind of processing unit (plant) and its processing method for improving roller surface cleannes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676446.5A CN107756158A (en) | 2016-08-17 | 2016-08-17 | A kind of processing unit (plant) and its processing method for improving roller surface cleannes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107756158A true CN107756158A (en) | 2018-03-06 |
Family
ID=61259966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610676446.5A Pending CN107756158A (en) | 2016-08-17 | 2016-08-17 | A kind of processing unit (plant) and its processing method for improving roller surface cleannes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107756158A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112428089A (en) * | 2020-11-20 | 2021-03-02 | 湖南力方轧辊有限公司 | Grinding machine for machining alloy cast steel roller |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200988048Y (en) * | 2006-12-19 | 2007-12-12 | 比亚迪股份有限公司 | Roller cleaning mechanism |
| CN101903130A (en) * | 2007-10-16 | 2010-12-01 | 纳格尔机械及工具制造厂有限责任公司 | The equipment and the method that are used for the press device of cutting part and are used to polish the side face of cylindrical work part |
| JP4611851B2 (en) * | 2005-09-15 | 2011-01-12 | 千住金属工業株式会社 | Solder rolling method and solder rolling mill |
| CN102847718A (en) * | 2012-08-17 | 2013-01-02 | 中冶南方工程技术有限公司 | Cleaning process and device for roller surface of cold rolled stainless steel flattening rolling machine |
| CN203460040U (en) * | 2013-08-21 | 2014-03-05 | 山西广华源药用包装有限公司 | Printing roller polisher |
| CN203863466U (en) * | 2014-06-13 | 2014-10-08 | 倪素君 | Automatic bowl-shaped blind hole grinder |
| CN104139333A (en) * | 2014-07-11 | 2014-11-12 | 山东金宝电子股份有限公司 | Grinding method for rubber layer of rubber roller of copper foil surface treatment machine and arc plate fixture used thereof |
-
2016
- 2016-08-17 CN CN201610676446.5A patent/CN107756158A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4611851B2 (en) * | 2005-09-15 | 2011-01-12 | 千住金属工業株式会社 | Solder rolling method and solder rolling mill |
| CN200988048Y (en) * | 2006-12-19 | 2007-12-12 | 比亚迪股份有限公司 | Roller cleaning mechanism |
| CN101903130A (en) * | 2007-10-16 | 2010-12-01 | 纳格尔机械及工具制造厂有限责任公司 | The equipment and the method that are used for the press device of cutting part and are used to polish the side face of cylindrical work part |
| CN102847718A (en) * | 2012-08-17 | 2013-01-02 | 中冶南方工程技术有限公司 | Cleaning process and device for roller surface of cold rolled stainless steel flattening rolling machine |
| CN203460040U (en) * | 2013-08-21 | 2014-03-05 | 山西广华源药用包装有限公司 | Printing roller polisher |
| CN203863466U (en) * | 2014-06-13 | 2014-10-08 | 倪素君 | Automatic bowl-shaped blind hole grinder |
| CN104139333A (en) * | 2014-07-11 | 2014-11-12 | 山东金宝电子股份有限公司 | Grinding method for rubber layer of rubber roller of copper foil surface treatment machine and arc plate fixture used thereof |
Non-Patent Citations (2)
| Title |
|---|
| 中国水利水电第七工程局有限公司: "《京沪高速铁路CRTII型无砟轨道板制造》", 31 December 2009, 天津科技翻译出版公司 * |
| 李超雄等: "《高速铁路无砟轨道线路养护维修》", 31 December 2011, 中国铁道出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112428089A (en) * | 2020-11-20 | 2021-03-02 | 湖南力方轧辊有限公司 | Grinding machine for machining alloy cast steel roller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105729260A (en) | Roller grinding process | |
| CN102189109B (en) | Modification configuration finishing roll group and modification configuration method thereof | |
| CN101941020B (en) | Piston rod finish-rolling device and processing process thereof | |
| CN107756158A (en) | A kind of processing unit (plant) and its processing method for improving roller surface cleannes | |
| CN201483766U (en) | Precision grain embossing roll machine | |
| CN202021238U (en) | Leveling machine | |
| CN106345812B (en) | A kind of magnesium alloy plate milling method with lateral pressure and its device used | |
| CN104475543B (en) | Ultrathin steel strip rolls flushing device continuously | |
| CN102658510A (en) | Manufacturing process of toothed rubber roller | |
| CN106623427A (en) | Four-roll high finishing mill with pressure sensor | |
| CN210752870U (en) | On-line grinding roller device for four-roller equipment | |
| CN207324937U (en) | A kind of powdery paints crusher | |
| CN206966549U (en) | A kind of ring blank is molded rolling ring mould | |
| CN204817541U (en) | Novel coiling machine sector plate | |
| CN102848755B (en) | Defect marking device and rolling method for bearing bush strips | |
| CN102397874A (en) | Method for prolonging service life of high-speed steel roller | |
| CN206795535U (en) | Adjustable cross polishing with roller support | |
| CN208708726U (en) | Ultra-thin tobacco stem flattener structure | |
| US20130102234A1 (en) | Polishing Device | |
| CN2776543Y (en) | Roll body structure of shaft shoulder type high pressure roll grinder | |
| CN206435594U (en) | A kind of removable formula arbor press of high-accuracy thin plate | |
| CN112474813B (en) | Method for controlling tin plate surface to take away roller marks | |
| CN210940926U (en) | Printing device of ampoule bottle inker | |
| CN107597853A (en) | A kind of method for distributing nip pressure rationally | |
| CN202367005U (en) | Oil erasing device for cross roll tubing straightener with assistant straightening function |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180306 |