CN106892552A - String manufacturing method and string control equipment, carry-over pinch rolls and its manufacture method for carry-over pinch rolls - Google Patents

String manufacturing method and string control equipment, carry-over pinch rolls and its manufacture method for carry-over pinch rolls Download PDF

Info

Publication number
CN106892552A
CN106892552A CN201710071319.7A CN201710071319A CN106892552A CN 106892552 A CN106892552 A CN 106892552A CN 201710071319 A CN201710071319 A CN 201710071319A CN 106892552 A CN106892552 A CN 106892552A
Authority
CN
China
Prior art keywords
string
carry
pinch rolls
over pinch
fibre plate
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
Application number
CN201710071319.7A
Other languages
Chinese (zh)
Inventor
乔文博
姜文成
王丽红
郑权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongxu Optoelectronic Technology Co Ltd
Original Assignee
Tunghsu Group Co Ltd
Tunghsu Technology Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tunghsu Group Co Ltd, Tunghsu Technology Group Co Ltd filed Critical Tunghsu Group Co Ltd
Priority to CN201710071319.7A priority Critical patent/CN106892552A/en
Publication of CN106892552A publication Critical patent/CN106892552A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06Forming glass sheets
    • C03B17/068Means for providing the drawing force, e.g. traction or draw rollers
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B15/00Drawing glass upwardly from the melt
    • C03B15/02Drawing glass sheets

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The present invention relates to glass manufacturing equipment field, disclose a kind of string manufacturing method for carry-over pinch rolls and string control equipment, carry-over pinch rolls and its manufacture method, multiple fibre plates (2) that the carry-over pinch rolls include mandrel (1) and are formed on for string on the mandrel (1), the string manufacturing method includes that string is formed on the string process on the mandrel (1) by several times by the fibre plate (2), and, during the string system, each string is made the pressure applied during fibre plate (2) and is incremented by.String manufacturing method of the invention enables to the tightness degree between axially distributed each fibre plate (2) to tend to uniform, and avoid string make during pressure it is excessive or it is too small caused by stiffness issue, improve the qualification rate and adaptability of carry-over pinch rolls.

Description

String manufacturing method and string control equipment, carry-over pinch rolls and its manufacture method for carry-over pinch rolls
Technical field
The present invention relates to glass manufacturing equipment, in particular it relates to a kind of string manufacturing method for carry-over pinch rolls.It is basic herein On, the carry-over pinch rolls being made the invention further relates to a kind of manufacture method of carry-over pinch rolls and by the manufacture method.Additionally, the present invention is also related to And a kind of string control equipment for implementing foregoing string manufacturing method.
Background technology
In glass production, need to often be clamped using pull roll assembly and draw glass plate, so that it is molded.Usually, it is It is easy to apply sufficient tractive force and avoids damaging glass plate, carry-over pinch rolls can includes mandrel and cladding fiber bag thereon Coating, for example, be formed on multiple fibre plate strings on mandrel and be compacted, then that fibre coatings machining is predetermined to having Radial dimension, to meet demand of the glass production line to different size specification carry-over pinch rolls.
However, aborning, often the obtained carry-over pinch rolls of appearance are unqualified or are difficult to meet the situation of glass production demand, For example, the fibre coatings excessive high hardness or too low on carry-over pinch rolls, it is impossible to apply moderate tractive force etc..
The content of the invention
The technical problems to be solved by the invention are to provide a kind of string manufacturing method for carry-over pinch rolls, and the string manufacturing method can So that go here and there the fibre plate being formed on mandrel fully and equably compress, to improve the qualification rate and adaptability of obtained carry-over pinch rolls.
In order to solve the above-mentioned technical problem, one aspect of the present invention provides a kind of string manufacturing method for carry-over pinch rolls, institute Multiple fibre plates that carry-over pinch rolls are formed on the mandrel including mandrel and for string are stated, the string manufacturing method is included the fibre plate String is formed on the string process on the mandrel by several times, also, during the string system, each time string makes what is applied during the fibre plate Pressure is incremented by.
Preferably, it is 5MPa~20MPa that each string makes the pressure limit applied during the fibre plate.
Preferably, it is 2MPa~6MPa that adjacent string twice makes the pressure difference value applied during the fibre plate.
Preferably, before the fibre plate string is formed on the mandrel, the fibre plate is weighed and is made by string with selected The fibre plate.
Preferably, during the string system, keep applying the stressed time incremental for each time when string makes the fibre plate.
Preferably, keep applying stressed time range when each string makes the fibre plate for 1min~10min.
Preferably, 3~5 strings of the fibre plate point are formed on the mandrel.
Another aspect of the present invention provides a kind of string control equipment for implementing according to above-mentioned string manufacturing method, and the string sets up Standby to include frame, install case, tailstock and device for exerting, the installation case is arranged in the frame and can support described leading Pick-up roll, the device for exerting can apply different pressure, will be located at the fibre between the device for exerting and the tailstock String is formed on the mandrel dimension piece by several times.
Additionally, the present invention also provides a kind of manufacture method of carry-over pinch rolls, the manufacture method includes:S1. made according to foregoing string The fibre plate string is formed on method the step on the mandrel;S2. by fibre plate sintered bonds the step of, wherein, In step S1, the overall weight of the whole fibre plate that string is formed on the mandrel is controlled in preset range.
In addition, the present invention also provides one kind by carry-over pinch rolls obtained in above-mentioned manufacture method.
By above-mentioned technical proposal, fibre plate of the present invention is incremented by by the pressure that string system by several times, and each string apply when processed, by This causes that the tightness degree between axially distributed each fibre plate tends to uniform, and pressure is excessive or mistake during avoiding string from making Stiffness issue caused by small, improves the qualification rate and adaptability of carry-over pinch rolls.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with following tool Body implementation method is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of schematic diagram for implementing the string control equipment of string manufacturing method of the invention.
Description of reference numerals
The fibre plate of 1 mandrel 2
The nut of 3 block plate 4
5 frame 6 installs case
The hydraulic cylinder of 7 tailstock 8
9 pushing rams
Specific embodiment
Specific embodiment of the invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
In the following description, by first with reference to accompanying drawing to the string control equipment provided by the present invention for implementing string manufacturing method A kind of preferred embodiment is illustrated, and is then based on the string control equipment and is described string manufacturing method of the invention in detail.It is basic herein On, those of ordinary skill in the art therefrom comprehension and can implement the technical side that appended claims of the present invention are limited Case.
With reference to shown in Fig. 1, according to a kind of string control equipment of preferred embodiment of the invention, can be used in implementing then described String manufacturing method, by multiple fibre plates 2 string be formed on mandrel 1.The string control equipment includes frame 5, installs case 6, tailstock 7 and pressure Device etc..Wherein, case 6 is installed to be arranged in frame 5 and carry-over pinch rolls can be supported (to be supported in the fibre of the system of string during the system of going here and there On dimension piece 2);Device for exerting is oppositely arranged from tailstock 7 and can apply different pressure such that it is able to by therebetween fiber String is formed on mandrel 1 piece 2 by several times.
In the string control equipment, device for exerting could be arranged to any appropriate format, such as linear electric motor, as long as pre- Determine its pressure controllable in scope, belong to concept of the invention.In the shown embodiment, device for exerting includes hydraulic cylinder 8 and the pushing ram 9 (hydraulic coupling can be provided by the hydraulic power unit of pressure controllable) that is driven by the hydraulic cylinder 8, the mandrel 1 of carry-over pinch rolls One end can extend into pushing ram 9 so that fibre plate 2 of the extruded sleeve of pushing ram 9 on mandrel 1.In the other end, mandrel 1 The upper block plate 3 for being used to limit the axial location of fibre plate 2 is seated in tailstock 7 and limits the end position by the tailstock 7, and nut 4 is treated Screwed in place when completing to go here and there processed.
The string of fibre plate 2 can be formed on mandrel 1 using above-mentioned string control equipment and make it fully and be equably pressed against each other. Specifically, multiple fibre plates 2 (such as being selected by weighing) of predetermined weight can be divided into several pieces (such as 3~5 parts) first, Then string system by several times is carried out, and the pressure applied when going here and there processed each time is incremented by.Thus, when previous with relatively small pressure string system When, first group of fibre plate is tentatively compressed;After once with relatively large pressure string when, the larger pressure is not only acted on In on second group of fibre plate, and consume after-applied on first group of fibre plate through transmission and part, so that two groups of fibre plates Tightness degree tends to uniform.In addition, above-mentioned gradation string process improves the controllability of pressure applying, it is easy to avoid fiber from coating The excessive or too small problem of layer local pressure, improves the qualification rate and adaptability of carry-over pinch rolls, can apply in glass manufacture The tractive force being of moderate size.
The above-mentioned string control equipment of two kinds of utilizations presented below implements the embodiment of string manufacturing method of the invention:
Embodiment 1
1. the mandrel 1 of carry-over pinch rolls is placed in installation case 6;
2. the overall weight of fibre plate 2 is weighed by 25KG weight;
3. 2 points of fibre plate is 3 parts after weighing;
4. by first part of fibre plate string to mandrel 1;
5. 6MP pressure values are set on hydraulic power unit;
6. start hydraulic power unit, promote pushing ram 9 to drive installation case 6 to travel forward by hydraulic cylinder 8, so as to by fibre plate 2 Top pressure is shaped to the position of block plate 3 on tailstock 7;
7. pressure value 2min is kept;
8. hydraulic power unit pressure release is made;
9. by second part of fibre plate string to mandrel 1;
10. 8MP pressure values are set on hydraulic power unit;
11. start hydraulic power units, promote pushing ram 9 to drive installation case 6 to travel forward by hydraulic cylinder 8, so as to by fibre plate 2 Top pressure is shaped to the position of block plate 3 on tailstock 7;
12. keep pressure value 2min;
13. make hydraulic power unit pressure release;
14. by the 3rd part of fibre plate string to mandrel 1;
15. set 10MP pressure values on hydraulic power unit;
16. start hydraulic power units, promote pushing ram 9 to drive installation case 6 to travel forward by hydraulic cylinder 8, so as to by fibre plate 2 Top pressure is shaped to the position of block plate 3 on tailstock 7;
17. keep pressure value 5min;
Nut 4 is screwed on mandrel 1 and limits the position of block plate 3 by 18.;
19. make hydraulic power unit pressure release, complete the string process of carry-over pinch rolls.
Embodiment 2
1. the mandrel 1 of carry-over pinch rolls is placed in installation case 6;
2. the overall weight of fibre plate 2 is weighed by 30KG weight;
3. 2 points of fibre plate is 3 parts after weighing;
4. by first part of fibre plate string to mandrel 1;
5. 8MP pressure values are set on hydraulic power unit;
6. start hydraulic power unit, promote pushing ram 9 to drive installation case 6 to travel forward by hydraulic cylinder 8, so as to by fibre plate 2 Top pressure is shaped to the position of block plate 3 on tailstock 7;
7. pressure value 5min is kept;
8. hydraulic power unit pressure release is made;
9. by second part of fibre plate string to mandrel 1;
10. 10MP pressure values are set on hydraulic power unit;
11. start hydraulic power units, promote pushing ram 9 to drive installation case 6 to travel forward by hydraulic cylinder 8, so as to by fibre plate 2 Top pressure is shaped to the position of block plate 3 on tailstock 7;
12. keep pressure value 5min;
13. make hydraulic power unit pressure release;
14. by the 3rd part of fibre plate string to mandrel 1;
15. set 12MP pressure values on hydraulic power unit;
16. start hydraulic power units, promote pushing ram 9 to drive installation case 6 to travel forward by hydraulic cylinder 8, so as to by fibre plate 2 Top pressure is shaped to the position of block plate 3 on tailstock 7;
17. keep pressure value 8min;
Nut 4 is screwed on mandrel 1 and limits the position of block plate 3 by 18.;
19. make hydraulic power unit pressure release, complete the string process of carry-over pinch rolls.
According to above two embodiment, it can be seen that the pressure during string system is incremented by relation.In addition to this it is possible to see It is 2MPa~6MPa to go out the adjacent pressure differential for going here and there system twice, and the stressed time is applied in holding processed of going here and there for each time can be incremented by.In pressure Power size and retention time aspect, the fibre plate total amount that the carry-over pinch rolls according to manufacture are included are different, when pressure size and holding Between can suitably increase and decrease, such as respectively 5MPa~20MPa and 1min~10min.
In above process, fibre plate 2 is gone here and there and needed to weigh its overall weight before on mandrel 1, and be controlled in Between 15KG~40KG, this is conducive to controlling the quality of obtained carry-over pinch rolls.Specifically, different fibre plates 2 are in thickness Etc. aspect have differences, if with piece number as metering method, being difficult to accurately control the fibre plate amount in fibre coatings, easily lead Cause string that fibre coatings are obtained really up to the mark or excessively soft.Weighed by overall, can had by the control of fibre plate amount in proper range The carry-over pinch rolls for meeting quality requirement are obtained beneficial to by including the manufacture method including the steps such as follow-up sintering bonding.
On this basis, the present invention also provides the carry-over pinch rolls being made up of above-mentioned manufacture method.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality The detail in mode is applied, in range of the technology design of the invention, various letters can be carried out to technical scheme Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can The combination of energy is no longer separately illustrated.
Additionally, can also be combined between a variety of implementation methods of the invention, as long as it is without prejudice to originally The thought of invention, it should equally be considered as content disclosed in this invention.

Claims (10)

1. a kind of string manufacturing method for carry-over pinch rolls, the carry-over pinch rolls include mandrel (1) and are formed on the mandrel (1) for going here and there Multiple fibre plates (2), it is characterised in that the string manufacturing method includes that string is formed on the mandrel (1) by several times by the fibre plate (2) On string process, also, during the string system, each string is made the pressure applied during fibre plate (2) and is incremented by.
2. the string manufacturing method for carry-over pinch rolls according to claim 1, it is characterised in that each string system fibre plate (2) pressure limit applied when is 5MPa~20MPa.
3. the string manufacturing method for carry-over pinch rolls according to claim 1, it is characterised in that the adjacent system fiber of string twice The pressure difference value applied during piece (2) is 2MPa~6MPa.
4. the string manufacturing method for carry-over pinch rolls according to claim 1, it is characterised in that by the fibre plate (2) string Before being formed on the mandrel (1), the fibre plate (2) is weighed to select by the fibre plate (2) of string system.
5. the string manufacturing method for carry-over pinch rolls as claimed in any of claims 1 to 4, it is characterised in that described During string system, keep applying the stressed time incremental for each time when string makes fibre plate (2).
6. the string manufacturing method for carry-over pinch rolls as claimed in any of claims 1 to 4, it is characterised in that each string Keep applying stressed time range when making the fibre plate (2) for 1min~10min.
7. the string manufacturing method for carry-over pinch rolls as claimed in any of claims 1 to 4, it is characterised in that the fibre 3~5 strings of dimension piece (2) point are formed on the mandrel (1).
8. a kind of string control equipment for implementing string manufacturing method as claimed in any of claims 1 to 7, its feature exists In the string control equipment includes frame (5), installs case (6), tailstock (7) and device for exerting, and the installation case (6) is arranged at institute State in frame (5) and the carry-over pinch rolls can be supported, the device for exerting can apply different pressure, will be positioned at the pressure String is formed on the mandrel (1) fibre plate (2) between device and the tailstock (7) by several times.
9. a kind of manufacture method of carry-over pinch rolls, it is characterised in that the manufacture method includes:
S1. the fibre plate (2) string is formed on according to string manufacturing method as claimed in any of claims 1 to 7 described Step on mandrel (1);
S2. by the fibre plate (2) sintered bonds the step of,
Wherein, in step sl, the overall weight of the whole fibre plate (2) that string is formed on the mandrel (1) is controlled in pre- Determine in scope.
10. a kind of carry-over pinch rolls, it is characterised in that the carry-over pinch rolls are made up of manufacture method according to claim 9.
CN201710071319.7A 2017-02-09 2017-02-09 String manufacturing method and string control equipment, carry-over pinch rolls and its manufacture method for carry-over pinch rolls Pending CN106892552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710071319.7A CN106892552A (en) 2017-02-09 2017-02-09 String manufacturing method and string control equipment, carry-over pinch rolls and its manufacture method for carry-over pinch rolls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710071319.7A CN106892552A (en) 2017-02-09 2017-02-09 String manufacturing method and string control equipment, carry-over pinch rolls and its manufacture method for carry-over pinch rolls

Publications (1)

Publication Number Publication Date
CN106892552A true CN106892552A (en) 2017-06-27

Family

ID=59197900

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710071319.7A Pending CN106892552A (en) 2017-02-09 2017-02-09 String manufacturing method and string control equipment, carry-over pinch rolls and its manufacture method for carry-over pinch rolls

Country Status (1)

Country Link
CN (1) CN106892552A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108046573A (en) * 2017-11-30 2018-05-18 彩虹(合肥)液晶玻璃有限公司 A kind of TFT-LCT glass substrate formings carry-over pinch rolls and preparation method thereof
CN112645567A (en) * 2020-11-17 2021-04-13 彩虹(合肥)液晶玻璃有限公司 Short roller coating method capable of prolonging service life of coating layer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1382443A (en) * 1971-02-05 1975-01-29 Hoeganaes Ab Roller
CN101792250A (en) * 2008-12-30 2010-08-04 康宁股份有限公司 Method for producing pulling rolls for use in manufacturing sheet glass
CN102021309A (en) * 2010-12-16 2011-04-20 山西太钢不锈钢股份有限公司 Installation method of fiber roll of annealing furnace
CN202099193U (en) * 2011-06-03 2012-01-04 洛阳兰迪玻璃机器有限公司 Device for winding rope on surface of glass delivery roller
CN104016579A (en) * 2008-10-30 2014-09-03 康宁股份有限公司 Methods for forming cladding portions of optical fiber preform assemblies
CN204131986U (en) * 2014-07-22 2015-02-04 奇瑞重工股份有限公司 A kind of maize harvesting machine peeling rollers assembling and pressing platform
CN104649697A (en) * 2011-05-02 2015-05-27 霓佳斯株式会社 Disc Roll And Base Material Thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1382443A (en) * 1971-02-05 1975-01-29 Hoeganaes Ab Roller
CN104016579A (en) * 2008-10-30 2014-09-03 康宁股份有限公司 Methods for forming cladding portions of optical fiber preform assemblies
CN101792250A (en) * 2008-12-30 2010-08-04 康宁股份有限公司 Method for producing pulling rolls for use in manufacturing sheet glass
CN102021309A (en) * 2010-12-16 2011-04-20 山西太钢不锈钢股份有限公司 Installation method of fiber roll of annealing furnace
CN104649697A (en) * 2011-05-02 2015-05-27 霓佳斯株式会社 Disc Roll And Base Material Thereof
CN202099193U (en) * 2011-06-03 2012-01-04 洛阳兰迪玻璃机器有限公司 Device for winding rope on surface of glass delivery roller
CN204131986U (en) * 2014-07-22 2015-02-04 奇瑞重工股份有限公司 A kind of maize harvesting machine peeling rollers assembling and pressing platform

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108046573A (en) * 2017-11-30 2018-05-18 彩虹(合肥)液晶玻璃有限公司 A kind of TFT-LCT glass substrate formings carry-over pinch rolls and preparation method thereof
CN112645567A (en) * 2020-11-17 2021-04-13 彩虹(合肥)液晶玻璃有限公司 Short roller coating method capable of prolonging service life of coating layer

Similar Documents

Publication Publication Date Title
CN104874662B (en) Special-shaped plate magnetic medium damping building mortion and method
EP1959131B1 (en) Wind turbine with a hydraulically actuated rotor brake
CN106892552A (en) String manufacturing method and string control equipment, carry-over pinch rolls and its manufacture method for carry-over pinch rolls
CN102159337A (en) Multi-layer tube using high-pressure tube-hydroforming and manufacturing method thereof
TW202427924A (en) Production apparatus of motor laminated core and method for producing the same
DE102008030927A1 (en) Method and device for laminating substantially plate-shaped workpieces under pressure and heat
CN102107244A (en) Method for forming thin-walled parts through stamping and drawing
CN203027613U (en) Laminating structure for prepreg resin plug hole
CN104260261A (en) Semi-wrapped graphite membrane calendering and die cutting technological method and device
CN108147650A (en) A kind of heating in vacuum based on high frequency hot-bending machine is pressed together method
CN101566197A (en) Locking disk auxiliary device, locking system and locking method
CN102554023B (en) Pipe local reducing method
CN204108327U (en) For the Digit Control Machine Tool Pneumatic tailstock of roller processing
CN108263072A (en) A kind of roll web overprinting method
EP3651989B1 (en) Laminating device and method for laminating at least one layer stack
CN102501402A (en) Hydraulic device capable of outputting constant force, and control method
CN107557738A (en) A kind of manufacture method of the high purity boron target of high-compactness high rigidity
EP3720695B1 (en) Apparatus and method for cylinder changeover with a mechanically lockable force-building cylinder
CN205200247U (en) Do not have around degree workstation
CN110014064B (en) Hydraulic driving system of high-precision stamping numerical control machine tool
CN203600512U (en) Hydraulic type roller medium-height adjusting device
CN110014063B (en) Self-adaptive stamping system of stamping machine tool
CN205909681U (en) Sintering furnace zone overspeed device tensioner
CN109622719A (en) Multiple groups part pressure medium plate liquid filling deep-drawing forming method
CN221074895U (en) Assembly tool for stacked die

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20200917

Address after: 050035 No. 9, the Yellow River Avenue, hi tech Zone, Hebei, Shijiazhuang

Applicant after: DONGXU OPTOELECTRONIC TECHNOLOGY Co.,Ltd.

Address before: The 100075 Beijing Seahawks Fengtai District Science City Road No. 9 Building No. 2 room 266 (Park)

Applicant before: TUNGHSU TECHNOLOGY GROUP Co.,Ltd.

Applicant before: TUNGHSU GROUP Co.,Ltd.

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170627