CN207735360U - A kind of Roller of Forming Unit of SSAW Pipe - Google Patents
A kind of Roller of Forming Unit of SSAW Pipe Download PDFInfo
- Publication number
- CN207735360U CN207735360U CN201721722838.7U CN201721722838U CN207735360U CN 207735360 U CN207735360 U CN 207735360U CN 201721722838 U CN201721722838 U CN 201721722838U CN 207735360 U CN207735360 U CN 207735360U
- Authority
- CN
- China
- Prior art keywords
- roller
- convex block
- installation
- forming unit
- telescopic rod
- 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.)
- Expired - Fee Related
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Abstract
The utility model is related to SSAW pipe unit pipe crimping forming fields,Specially a kind of Roller of Forming Unit of SSAW Pipe,The Roller of Forming Unit of SSAW Pipe,By the way that corresponding roller one is arranged in the inside of installation base plate,Roller two,Roller three,Roller four,Roller five,Roller six,Roller seven,Roller eight,Roller nine and roller ten,Steel pipe main body is located to the inside of roll assembly,Carry out position restriction,Roller ten is installed using activity,The mode of roller eight and roller seven,And pass through movable installation part respectively,It adjusts support component one and adjusts two carry out activity installation of support component,In such a way that positioning column and limit substrate in batch are at movable installation part,The installation that sliding buckling groove is threadably secured part is opened up in the inside of limit substrate,And using the external screw thread of positioning column and the internal thread inside threaded fastener through-hole be screwed that people is facilitated to install,The length being threadably secured,Adjust the position of roller ten,Improve applicability.
Description
Technical field
The utility model is related to SSAW pipe unit pipe crimping forming field, specially a kind of Roller of Forming Unit of SSAW Pipe.
Background technology
With the market demand of super large caliber spiral welded pipe, before this existing former structure of SSAW pipe unit and
Technological ability far from disclosure satisfy that with super large radius-thickness ratio（D/t values）, super large forming angle and low material feature it is special
The requirement of the specification steel pipe quality of production, former outer roller arrangement number is opposite in this special steel pipe production is reduced, especially part
Gap is larger between roller, and peculiar part ringfeder makes pipe stablize blocked rotation, allowance week caused by three roll bending plate principles
Phase release, which seriously affects, is molded gap-like state and pipe geometric dimension at 6 o'clock.
Utility model content
The technical issues of the utility model solves is to overcome the prior art in Large Diameter Pipeline steel pipe（2000mm or more）Production
When, product quality technological deficiency not up to standard provides a kind of Roller of Forming Unit of SSAW Pipe.
To achieve the above object, the utility model provides the following technical solutions：
A kind of Roller of Forming Unit of SSAW Pipe, including former ontology and steel pipe main body, steel pipe main body setting it is described at
The inside of the inside of type device ontology, the former ontology is additionally provided with roller eight and roller ten, the roller eight and the roller
Wheel ten is oppositely arranged along the horizontal center line of steel pipe main body；Such design is to cross steel pipe center according to roll stand center line（To
The heart）What principle was designed.
Preferably, the inside of Roller of Forming Unit of SSAW Pipe, the former ontology is additionally provided with the second flexible wire drawing localization machine
Structure, the second flexible wire drawing detent mechanism includes inverted Y-shaped connector, and the side of inverted Y-shaped connector is provided with hang plate, described
The other side of hang plate is rotatablely equipped with roller eight；The other side of the inverted Y-shaped connector is rotatably connected to the second telescopic rod, institute
The other end for stating the second telescopic rod is rotatablely connected the second firm banking；Second flexible wire drawing detent mechanism design considers replacement
Easy to adjust and reasonability when steel pipe specification, the ingenious layout in the space of restriction avoid the first flexible wire drawing detent mechanism,
Independent design organizes flexible wire drawing detent mechanism in pairs therewith, and both arms unification ensures stability and direction and location, and rationally real
Existing flexible modulation function.
Preferably, Roller of Forming Unit of SSAW Pipe includes installation base plate, and a side surface of the installation base plate, which is equipped with, vertically determines
Position holder, the described one end of vertical locating support far from installation base plate is equipped with lateral connection holder, the lateral connection holder
One end far from vertical locating support is equipped with diagonal brace mounting plate, and the diagonal brace mounting plate is equipped with locating convex block, the positioning
Convex block side surface pivots corresponding with diagonal brace mounting plate inclined surface are equipped with roller seven, the bottom surface of the installation convex block and
Outer surface is equipped with vertical convex block, horizontal convex block；The vertical convex block is inverted Y-shaped with the described second flexible wire drawing detent mechanism
The upper end of connector is rotatablely connected by shaft, and the inverted Y-shaped connector is provided with close to the side of vertical locating support to incline
The other side of inclined plate, the hang plate is rotatablely equipped with roller eight；The horizontal convex block and the first flexible wire drawing detent mechanism phase
Connection, the first flexible wire drawing detent mechanism include the first telescopic rod, and the horizontal convex block is to turn with first telescopic rod
Dynamic connection；Shaft and rotated through-hole, the diagonal brace installation are respectively arranged between the lateral connection holder and diagonal brace mounting plate
Pass through shaft and rotated through-hole, rotation connection between plate and lateral connection holder.
Preferably, the installation base plate, which is located at the side surface installation settings below lateral connection holder, installation convex block,
The top surface of the installation convex block is rotatablely equipped with roller one, and the both sides of the roller one are respectively arranged with roller two and roller three,
The surface pivots of inclined support are equipped with roller four, and the side surface pivots of the connecting bracket are equipped with roller five, described
The top surface of lateral connection holder position corresponding with roller one is rotatablely equipped with roller six by supporting lug；The installation base
The outside that the surface of plate is located at roller three is provided with inclined base corresponding with inclined support, and the surface of the inclined base turns
Dynamic to be equipped with roller nine, the surface position corresponding with roller nine of the vertical locating support is provided with roller ten.
Preferably, first telescopic rod and second telescopic rod are electric telescopic rod..
Preferably, position of the vertical locating support between lateral connection holder and installation base plate is provided with activity
Installation part, the roller ten are rotatably installed in side of the movable installation part far from vertical locating support.
Compared with prior art, the utility model has the beneficial effects that：
（1）The Roller of Forming Unit of SSAW Pipe, by the way that vertical locating support, lateral connection branch is arranged on the surface of installation base plate
The installing mechanisms such as frame, diagonal brace mounting plate form half-surrounded space, and installation convex block is arranged on the inside of it, tilts mounting bracket, incline
It is corresponding that bearing diagonal part, oblique tube, supporting lug, locating convex block, hang plate, inclined base and movable installation part carry out its
Turn of roller one, roller two, roller three, roller four, roller five, roller six, roller seven, roller eight, roller nine and roller ten
Dynamic installation, to carry out position restriction, roller is installed using activity by being arranged steel pipe main body in the inside of roll assembly
Ten, the mode of roller eight and roller seven, and by movable installation part, adjusting support component one and adjust support component respectively
Two carry out activity installations open up in such a way that positioning column and limit substrate in batch are at movable installation part in the inside of limit substrate
Sliding buckling groove is threadably secured the installation of part, and uses the external screw thread of positioning column and the interior spiral shell inside threaded fastener through-hole
Line be screwed the length that facilitates people to install, and can be threadably secured, and adjusts the position of roller ten, improves
Applicability adjusts support component one using electric telescopic rod and rotation connection component composition and adjusts support component two, and
Using the mode of positioning plate and movable plate composition rotation connection component by positioning plate and movable plate respectively with electric telescopic rod
Both ends and installation base plate, the components such as horizontal convex block and inverted Y-shaped connector fixed position be attached, to conveniently pass through
The flexible drive roller seven of corresponding electric telescopic rod and the position of roller eight are adjusted, to facilitate people according to steel pipe master
The difference of body, adjusts the position of roller, consequently facilitating being molded to steel pipe, the steel pipe to adapt to different requirements uses.
（2）The former of the utility model transformation can meet D1600mm to D2600mm ideal range bore steel pipe's productions,
It can meet radius-thickness ratio simultaneously（D/t values）≤ 150 and low material former steady production, part invention transformation effectively solves and carries
Pipe crimping former core process ability is risen.
（3）Most directly benefited is special requirement steel pipe forming quality of tube blank steel index such as circularity, straight degree, unfitness of butt joint, molding
Seam is inside and outside to be fluctuated the excess such as the frequency and reaches idealization in defect and weld seam latent defect, caliber, makes that production society Hui Shui should be limited to
The former technological ability of pipeline standard is promoted quickly to the production capacity that can fully meet the great oil-gas pipeline of country, matter
Measure long-acting be benefited；Also there is reference to the production of corresponding bigger pipeline.
（4）The design that Roller of Forming Unit of SSAW Pipe increases in roller arrangement improvement transformation is economical and practical, safe and reasonable, and design is new
Grain husk, intensity is reliable, and adjustment is reasonable, disassembly and installation is convenient.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model；
Fig. 3 is the utility model activity installation part sectional view.
In figure：1 installation base plate, 2 steel pipe main bodys, 3 vertical locating supports, 4 lateral connection holders, 5 diagonal brace mounting plates, 6 peaces
Fill convex block, 7 rollers one, 8 rollers two, 9 rollers three, 10 inclined supports, 11 rollers four, 12 oblique tubes, 13 rollers five, 14 rollers
Six, 15 locating convex blocks, 16 rollers seven, 17 vertical convex blocks, 18 horizontal convex blocks, 19 inverted Y-shaped connectors, 20 hang plates, 21 rollers eight,
22 inclined bases, 23 rollers nine, 24 first telescopic rods, 25 second firm bankings, 26 second telescopic rods, 27 rotation connection components,
28 movable installation parts, 29 rollers ten, 30 positioning columns, 31 limit substrates, 32 sliding buckling grooves, 33 threaded fasteners, 34 L-types are solid
Determine part, 35 auxiliary rollers, 36 inclination mounting brackets.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, the utility model provides a kind of technical solution：
A kind of Roller of Forming Unit of SSAW Pipe, including former ontology and steel pipe main body 2, steel pipe main body 2 are arranged in former sheet
The inside of body；The inside of former ontology is additionally provided with roller 8 21 and roller 10, and roller 8 21 and roller 10 are along steel pipe
The horizontal center line of main body 2 is oppositely arranged.
As a kind of technical optimization scheme of the utility model, the inside of former ontology is additionally provided with the second flexible wire drawing
Detent mechanism, the second flexible wire drawing detent mechanism include inverted Y-shaped connector 19, and the side of inverted Y-shaped connector 19 is provided with inclination
The other side of plate 20, hang plate 20 is rotatablely equipped with roller 8 21；The other side of inverted Y-shaped connector 19 is rotatably connected to second and stretches
The other end of contracting bar 26, the second telescopic rod 26 is rotatablely connected the second firm banking 25.
As a kind of technical optimization scheme of the utility model, former ontology further includes installation base plate 1 and steel pipe main body
2, a side surface of the installation base plate 1 is equipped with vertical locating support 3, and the vertical locating support 3 is far from installation base plate 1
One end is equipped with lateral connection holder 4, and 4 one end far from vertical locating support 3 of the lateral connection holder is equipped with diagonal brace peace
Loading board 5, the side surface installation settings that the installation base plate 1 is located at 4 lower section of lateral connection holder have installation convex block 6, the peace
The top surface of dress convex block 6 is rotatablely equipped with roller 1, and the both sides of the roller 1 are respectively arranged with roller 28 and roller 39,
The surface of middle installation base plate 1 is located at the outside of roller 28 and the outside of roller 39 and is respectively arranged with inclined support 10, institute
The surface pivots for stating inclined support 10 are equipped with roller 4 11, and wherein the inclined support 10 of roller 4 11 is far from roller 28
A side surface be fixedly connected with vertical locating support 3, the bottom surface of the lateral connection holder 4 is provided with opposite with roller 4 11
The oblique tube 12 answered, side surface pivots of the oblique tube 12 far from lateral connection holder 4 are equipped with roller 5 13, the cross
Roller 6 14, the diagonal brace are rotatablely equipped with by supporting lug to the top surface of connecting bracket 4 position corresponding with roller 1
The one end of mounting plate 5 far from lateral connection holder 4 is equipped with locating convex block 15, and locating convex block 15 is perpendicular to diagonal brace mounting plate 5
Inclined surface, wherein locating convex block 15 and diagonal brace mounting plate 5 be an integral molding structure, the locating convex block 15 and diagonal brace mounting plate
The corresponding side surface pivots in 5 inclined surface are equipped with roller 7 16, the bottom surface of the installation convex block 15 and outer surface peace
It is described perpendicular equipped with vertical convex block 17 parallel with vertical locating support 3 respectively and the horizontal convex block 18 parallel with installation base plate 1
The other end of convex block 17 is provided with inverted Y-shaped connector 19, and the upper end of inverted Y-shaped connector 19 passes through shaft and vertical convex block
17 rotation connections, the inverted Y-shaped connector 19 are provided with hang plate 20, the hang plate close to the side of vertical locating support 3
20 other side is rotatablely equipped with roller 8 21, and the outside that the surface of the installation base plate 1 is located at roller 39 is provided with and tilts
The surface pivots of 10 corresponding inclined base 22 of support element, the inclined base 22 are equipped with roller 9 23, the vertical positioning
The surface of holder 3 position corresponding with roller 9 23 is provided with roller 10.
As a kind of technical optimization scheme of the utility model, divide between the lateral connection holder 4 and diagonal brace mounting plate 5
It is not provided with shaft and rotated through-hole, by shaft and rotated through-hole between the diagonal brace mounting plate 5 and lateral connection holder 4,
Rotation connection, is provided with the first flexible wire drawing detent mechanism between the other end and installation base plate 1 of the horizontal convex block 18, and first
Flexible wire drawing detent mechanism includes the first telescopic rod 24, the inverted Y-shaped connector 19 one end and peace far from vertical locating support 3
It is provided with the second telescopic rod 25 between dress substrate 1.
Second flexible wire drawing detent mechanism includes inverted Y-shaped connector 19, and the side of the inverted Y-shaped connector 19, which is provided with, inclines
The other side of inclined plate 20, the hang plate 20 is rotatablely equipped with roller 8 21；The other side rotation of the inverted Y-shaped connector 19 connects
It is connected to the second telescopic rod 26, the other end of second telescopic rod 26 is rotatablely connected the second firm banking 25.
As a kind of technical optimization scheme of the utility model, the vertical locating support 3 be located at lateral connection holder 4 with
Position between installation base plate 1 is provided with movable installation part 28, and it is separate that the roller 10 is rotatably installed in movable installation part 28
The side of vertical locating support 3.
As a kind of technical optimization scheme of the utility model, the activity installation part 29 includes positioning column 30 and limit base
Plate 31, one end of the positioning column 30 are mounted on the surface of vertical mounting bracket 4, and the limit substrate 31 is opposite with positioning column 30
The side answered offers sliding buckling groove 32, and the internal slide of the sliding buckling groove 32 is connected with threaded fastener 33, described
The inside of threaded fastener 33 offers through-hole corresponding with positioning column 30, and the outer surface of positioning column 30 and screw threads for fastening
33 through-hole wall of part is respectively arranged with external screw thread and internal thread, wherein positioning column 30 and threaded fastener 33 by internal thread with
And external screw thread is screwed.
As a kind of technical optimization scheme of the utility model, the top surface of the installation convex block 6 is equipped with L-type fixing piece
34, the other end inner surface of the L-type fixing piece 34 is rotatablely equipped with auxiliary roller 35, and the steel pipe main body 2 is arranged in roller
Take turns one 7, roller 28, roller 39, roller 4 11, roller 5 13, roller 6 14, roller 7 16, roller 1, roller 9 23
And the inside of roller 10, and roller 1 and auxiliary roller 35 are separately positioned on the inside and outside of 2 side wall of steel pipe main body, it is described
Roller 28 and roller 39 are rotatably installed in the surface of installation base plate 1 by tilting mounting bracket 36.
Operation principle：When people use the Roller of Forming Unit of SSAW Pipe, by the way that vertical positioning is arranged on the surface of installation base plate 1
The installing mechanisms such as holder 3, lateral connection holder 4, diagonal brace mounting plate 5 form half-surrounded space, and setting installation is convex on the inside of it
Block 6 tilts mounting bracket 36, inclined support 10, oblique tube 12, supporting lug, locating convex block 15, hang plate 20, tilts base
Seat 22 and movable installation part 28 carry out its corresponding roller 1, roller 28, roller 39, roller 4 11, roller 5 13,
The rotational installation of roller 6 14, roller 7 16, roller 8 21, roller 9 23 and roller 10, by the way that steel pipe main body 2 to be arranged
In the inside of roll assembly, to carry out position restriction, using activity installation roller 10, roller 8 21 and roller 7 16
Mode, and adopted respectively by movable installation part 28, the first telescopic rod 24 of adjusting and the 25 carry out activity installation of the second firm banking
With the mode of positioning column 30 and limit 31 composition activity installation part 28 of substrate, sliding buckling groove is opened up in the inside of limit substrate 31
32 are threadably secured the installation of part 33, and use the external screw thread of positioning column 30 and the internal thread inside 33 through-hole of threaded fastener
Be screwed the length that facilitates people to install, and can be threadably secured, adjust the position of roller 10, improves
Applicability forms the first flexible wire drawing detent mechanism and the second flexible drawing using the second telescopic rod 26 and rotation connection component 27
Silk detent mechanism, and pass through positioning plate and movable plate using the mode of positioning plate and movable plate composition rotation connection component 27
Respectively with the fixed bit of the components such as the both ends and installation base plate 1 of the second telescopic rod 26, horizontal convex block 18 and inverted Y-shaped connector 19
It sets and is attached, pass through the flexible drive roller 7 16 of corresponding electric telescopic rod 26 and the position of roller 8 21 to convenient
Adjusting is set, to facilitate people to adjust the position of roller according to the difference of steel pipe main body 2, consequently facilitating steel pipe is molded,
The steel pipe for adapting to different requirements simultaneously uses.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of Roller of Forming Unit of SSAW Pipe, including former ontology and steel pipe main body（2）, it is characterised in that：The steel pipe main body
（2）It is arranged in the inside of the former ontology；The inside of the former ontology is additionally provided with roller eight（21）With roller ten
（29）, the roller eight（21）With the roller ten（29）Along steel pipe main body（2）Horizontal center line be oppositely arranged.
2. Roller of Forming Unit of SSAW Pipe according to claim 1, it is characterised in that：The inside of the former ontology is also set up
There is the second flexible wire drawing detent mechanism, the second flexible wire drawing detent mechanism includes inverted Y-shaped connector（19）, described inverted Y-shaped
Connector（19）Side be provided with hang plate（20）, the hang plate（20）The other side be rotatablely equipped with roller eight（21）；
The inverted Y-shaped connector（19）The other side be rotatably connected to the second telescopic rod（26）, second telescopic rod（26）It is another
The second firm banking of end rotation connection（25）.
3. Roller of Forming Unit of SSAW Pipe according to claim 2, it is characterised in that：The former ontology includes installation base plate
（1）, the installation base plate（1）A side surface vertical locating support is installed（3）, the vertical locating support（3）Far from peace
Fill substrate（1）One end lateral connection holder is installed（4）, the lateral connection holder（4）Far from vertical locating support（3）'s
One end is equipped with diagonal brace mounting plate（5）, the diagonal brace mounting plate（5）Locating convex block is installed（15）, the locating convex block（15）
With diagonal brace mounting plate（5）The corresponding side surface pivots in inclined surface are equipped with roller seven（16）, the installation convex block（6）Bottom
Face and outer surface are equipped with vertical convex block（17）, horizontal convex block（18）；
The vertical convex block（17）With the inverted Y-shaped connector of the described second flexible wire drawing detent mechanism（19）Upper end by turn
Axis is rotatablely connected, the inverted Y-shaped connector（19）Close to vertical locating support（3）Side be provided with hang plate（20）, described
Hang plate（20）The other side be rotatablely equipped with roller eight（21）；
The horizontal convex block（18）It is connected with the first flexible wire drawing detent mechanism, the first flexible wire drawing detent mechanism includes
First telescopic rod（24）, the horizontal convex block（18）With first telescopic rod（24）For rotation connection；
The lateral connection holder（4）With diagonal brace mounting plate（5）Between be respectively arranged with shaft and rotated through-hole, the diagonal brace peace
Loading board（5）With lateral connection holder（4）Between pass through shaft and rotated through-hole, rotation connection.
4. a kind of Roller of Forming Unit of SSAW Pipe according to claim 3, it is characterised in that：The installation base plate（1）Positioned at cross
To connecting bracket（4）One side surface installation settings of lower section has installation convex block（6）, the installation convex block（6）Top surface rotation peace
Equipped with roller one（7）, the roller one（7）Both sides be respectively arranged with roller two（8）With roller three（9）, inclined support
（10）Surface pivots roller four is installed（11）, the connecting bracket（4）Side surface pivots roller five is installed（13）,
The lateral connection holder（4）Top surface and roller one（7）Corresponding position is rotatablely equipped with roller six by supporting lug
（14）；
The installation base plate（1）Surface be located at roller three（9）Outside be provided with and inclined support（10）Corresponding inclination
Pedestal（22）, the inclined base（22）Surface pivots roller nine is installed（23）, the vertical locating support（3）Surface
With roller nine（23）Corresponding position is provided with roller ten（29）.
5. a kind of Roller of Forming Unit of SSAW Pipe according to claim 3, it is characterised in that：First telescopic rod（24）And institute
State the second telescopic rod（26）For electric telescopic rod.
6. a kind of Roller of Forming Unit of SSAW Pipe according to claim 3, it is characterised in that：The vertical locating support（3）Position
In lateral connection holder（4）With installation base plate（1）Between position be provided with movable installation part（28）, the roller ten（29）Turn
It is dynamic to be mounted on movable installation part（28）Far from vertical locating support（3）Side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721722838.7U CN207735360U (en) | 2017-12-12 | 2017-12-12 | A kind of Roller of Forming Unit of SSAW Pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721722838.7U CN207735360U (en) | 2017-12-12 | 2017-12-12 | A kind of Roller of Forming Unit of SSAW Pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207735360U true CN207735360U (en) | 2018-08-17 |
Family
ID=63117762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721722838.7U Expired - Fee Related CN207735360U (en) | 2017-12-12 | 2017-12-12 | A kind of Roller of Forming Unit of SSAW Pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207735360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449910A (en) * | 2019-08-22 | 2019-11-15 | 扬州市三祥机械制造有限公司 | A kind of full-automatic welded tube mill and its welded tube technique |
-
2017
- 2017-12-12 CN CN201721722838.7U patent/CN207735360U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449910A (en) * | 2019-08-22 | 2019-11-15 | 扬州市三祥机械制造有限公司 | A kind of full-automatic welded tube mill and its welded tube technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180817 Termination date: 20201212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |