CN209491475U - A kind of steel construction people's air defense door skin welding equipment - Google Patents
A kind of steel construction people's air defense door skin welding equipment Download PDFInfo
- Publication number
- CN209491475U CN209491475U CN201822192010.6U CN201822192010U CN209491475U CN 209491475 U CN209491475 U CN 209491475U CN 201822192010 U CN201822192010 U CN 201822192010U CN 209491475 U CN209491475 U CN 209491475U
- Authority
- CN
- China
- Prior art keywords
- air defense
- people
- welding
- steel construction
- doorframe
- 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
Links
- 230000007123 defense Effects 0.000 title claims abstract description 97
- 238000003466 welding Methods 0.000 title claims abstract description 95
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 43
- 239000010959 steel Substances 0.000 title claims abstract description 43
- 238000010276 construction Methods 0.000 title claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 51
- 230000007306 turnover Effects 0.000 claims abstract description 24
- 238000012546 transfer Methods 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 229920003266 Leaf® Polymers 0.000 description 7
- 238000012545 processing Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Joining Of Corner Units Of Frames Or Wings (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Abstract
The utility model relates to steel construction closed guard gate's technical field of welding equipment, more particularly to a kind of steel construction people's air defense door skin welding equipment, including by can positive and negative transmission the transmission device that forms of transmission wheel, and the welder and turnover device arranged side by side along the direction of transfer of the transmission device；The top of the transmission device carries people's air defense doorframe to be welded, is placed with panel to be welded on the people's air defense doorframe；The welder welds completion between the panel and people's air defense doorframe；The turnover device to after welding panel and people's air defense doorframe complete overturning.The purpose of the invention of the present invention is to provide a kind of steel construction people's air defense door skin welding equipment, solve steel construction closed guard gate cover plate at this stage using technical solution provided by the utility model and reverse side welding there is technical issues that welding difficulty it is big and.
Description
Technical field
The utility model relates to steel construction closed guard gate technical field of welding equipment more particularly to a kind of steel construction people's air defense door leafs
Panel welding equipment.
Background technique
Closed guard gate is a part more important in defense equipment, and closed guard gate is by the people's air defense doorframe of steel construction, door leaf and matches
Part is welded to form.People's air defense accessory is the component part of defense equipment, and the process of manufacturing of people's air defense accessory is that common machinery adds
Work, process have vehicle, milling, plane, mill, polishing, welding etc..
There are two types of structure, reinforced concrete structure and steel constructions for people's air defense door leaf.Wherein steel construction common are GSFMG/
GSFM/GHSFM, such door are primarily directed to people's air defense main doorway, the partition door between people's air defense and people's air defense unit；And it is
Each people's air defense unit must be equipped with this door；This door plays a crucial role in people's air defense unit.
At this stage, this closed guard gate's main material is that have channel steel, I-steel, board material splice to form, for channel steel and I-steel
Spliced panel splicing, is mainly manually welded, while carrying out turn-over welding using driving.
Using human weld, there are following defects and deficiency in steel construction cover plate and reverse side welding at this stage:
1, the leak tightness that closed guard gate installs the later period has high requirements, that is high for the welding quality requirement of panel,
The stability of welding is not can guarantee manually；
2, the weight of closed guard gate reaches 2-3 tons, carries out reverse side welding again using driving overturning, security performance is very poor；
3, for splicing panel, being successively even more important when welding, for 2-3 ton of the panel need of weighing after existing technique welding
It is corrected processing, correction difficulty is very big；
4, using human weld, turn-over, the efficiency of correction are extremely low.
Utility model content
The purpose of the invention of the present invention is to provide a kind of steel construction people's air defense door skin welding equipments, practical using this
The technical solution of novel offer solve steel construction closed guard gate cover plate and reverse side welding at this stage there are welding difficulty greatly with
And the technical issues of low efficiency.
In order to solve the above-mentioned technical problem, the utility model provides a kind of steel construction people's air defense door skin welding equipment, packet
Include by can positive and negative transmission the transmission device that forms of transmission wheel, and the weldering arranged side by side along the direction of transfer of the transmission device
Connection device and turnover device；The top of the transmission device carries people's air defense doorframe to be welded, is placed on the people's air defense doorframe
Panel to be welded；The welder welds completion between the panel and people's air defense doorframe；After the turnover device is to welding
Panel and people's air defense doorframe complete overturning.
Preferably, the transmission device is divided into doorframe along its direction of transfer and places position, welding position and flip bit；Institute
The underface that welding position is located at the welder is stated, the flip bit is located at the underface of the turnover device.
Preferably, the welder includes portal frame and the welding manipulator that is lifted on the portal frame；It is described
Welding manipulator is suspended in the surface of the welding position.
Preferably, the turnover device includes that the column for being located at the transmission device two sides by two and liftable are set to
The lifting portal frame of lift beam composition between two columns and the fixed structure being fixed on the lift beam；Institute
Stating lift beam can be along its axial-rotation；The fixed structure is for fixing the people's air defense doorframe；In the overturning of the transmission device
Position is formed with the accommodating position being embedded in for the lift beam and fixed structure；The fixed structure is for fixing the people's air defense doorframe
It is welded with the one side of panel, after being promoted by the lift beam, the lift beam rotation drives the people's air defense doorframe overturning, the liter
The people's air defense doorframe after the dynamic overturning of drop sill bolt drops to the lift beam and fixed structure is embedded in the accommodating in the flip bit
In position, after the people's air defense doorframe is placed in the flip bit, fixed structure is unclamped.
From the foregoing, it will be observed that using welding equipment provided by the utility model, it is available following the utility model has the advantages that passing through suspension
Welding manipulator welds panel and people's air defense doorframe, does not influence the normal transmission of people's air defense doorframe not only, is also greatly reduced
Requirement to welder improves welding quality and safety coefficient；Turnover device completes automatic turning to people's air defense doorframe, without artificial behaviour
Make, improves welding efficiency；It is fed by the left and right of transmission wheel, the cooperation with position sensor and directive wheel, while cooperating weldering
The segmented welding of welding manipulator no longer needs to be corrected processing after door leaf welding.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be practical to this
Attached drawing needed in the description of new embodiment or the prior art is briefly described.It should be evident that being described below
In attached drawing be only that a part of the embodiment of the utility model is not paying wound for those of ordinary skill in the art
Under the premise of the property made is laborious, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the utility model embodiment overall structure top view；
Fig. 2 is the utility model embodiment transmission device top view；
Fig. 3 is one schematic diagram of the utility model embodiment turnover device state；
Fig. 4 is two schematic diagram of the utility model embodiment turnover device state.
Specific embodiment
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.Obviously, 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 creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
The panels of the tow sides of steel construction closed guard gate is welded at this stage, using the human weld of inefficiency, due to
The leak tightness that closed guard gate installs the later period has high requirements, therefore high for the requirement of the welding quality of panel, manually can not
Guarantee the stability of welding；Furthermore the weight of closed guard gate reaches 2-3 tons, reverse side welding, safety are carried out again using driving overturning
It can be very poor；And for splicing panel, being successively even more important when welding is needed after human weld to 2-3 tons of the panel of weighing
It is corrected processing, correction difficulty is very big.
For this purpose, the welding equipment uses bonding machine the present embodiment provides a kind of steel construction people's air defense door skin welding equipment
Tool hand and turnover device complete the welding between people's air defense door leaf and panel and the overturning of people's air defense door leaf, solve human weld
Existing many technical problems.
Referring to Figure 1, transmission device 10, welder 20 and turnover device 30 are specifically included.
Since the weight of steel construction closed guard gate is larger, the weight of doorframe and panel is equally larger, and transmission device 10 uses
The weight of the unbearable steel construction closed guard gate of conventional belt structure, in the present embodiment, transmission device 10 is by can positive and negative transmission
Transmission wheel composition.In the welding process, the top of transmission device 10 carries people's air defense doorframe to be welded, places on people's air defense doorframe
There is panel to be welded, transmission wheel need at least carry the weight of people's air defense doorframe and two pieces of panels.
Welder 20 and turnover device 30 are then arranged side by side along the direction of transfer of transmission device 10.Fig. 2 is referred to, therewith
Corresponding, transmission device 10 is divided into doorframe along its direction of transfer and places position 11, welding position 12 and flip bit 13, wherein welding
The underface that position 12 is located at welder 20 is connect, flip bit 13 is located at the underface of turnover device 30.
Welding process is as described below:
1, people's air defense doorframe to be welded is placed on doorframe and places on position 11, then places in the top of people's air defense doorframe to be welded
Panel；
2, people's air defense doorframe and panel are sent to welding position 12 by transmission device 10 together, and welder 20 completes people's air defense doorframe
Welding sequence between panel, the panel welding of top surface finishes on people's air defense doorframe at this time；
3, the people's air defense doorframe after welding is sent to flip bit 13 again by transmission device 10, and turnover device 30 completes people's air defense doorframe
Overturning process, the panel after welding at this time is located at the bottom surface of people's air defense doorframe, the unwelded panel in upper top surface of people's air defense doorframe；
4, after second piece of panel is placed in the upper top surface of people's air defense doorframe, people's air defense doorframe is sent to weldering again by transmission device 10
Position 12 is connect, welder 20 completes the welding of second piece of panel, is finally completed the Welder of entire steel construction people's air defense door skin
Sequence.
In order to realize aforesaid operations process, steel construction people's air defense door skin welding equipment provided in this embodiment, welding
Device 20, turnover device 30 and transmission device 10 are all made of special designing.
Referring to Figure 1, wherein welder 20 includes portal frame 21 and the welding manipulator being lifted on portal frame 21
22, welding manipulator 22 is suspended in the surface of welding position 12, using the welding manipulator 22 for being suspended at 12 top of welding position, makes
Obtaining welding manipulator 22 will not influence normal transmission of the people's air defense doorframe on transmission device 10.
In the welding process due to welding manipulator 22, amplitude of oscillation dynamics is larger, and the pedestal of welding manipulator 22 need to consolidate solid
It is scheduled on portal frame 21；Welding manipulator 22 is also preinstalled with seam tracking system simultaneously, when there is abnormal size in weld seam, Ke Yijin
Line trace welding.
Fig. 3-4 is referred to, turnover device 30 includes lifting portal frame 31 and the fixation for grabbing fixed people's air defense doorframe
Structure 32.
Since lifting portal frame 31 mostly uses chain sling dragging suspension hook realization to move up and down, in view of the present embodiment goal of the invention
Particularity, in the present embodiment, the column 311 and liftable that lifting portal frame 31 is located at 10 two sides of transmission device by two are arranged
Lift beam 312 between two root posts 311 forms, so that entire lift beam 312 can carry out upper and lower position adjustment.In lifting dragon
In the structure feature of door frame 31, the both ends of lift beam 312 are provided with sliding block 313, sliding block 313 by lifting cylinder, lift cylinder,
Lifting chain or driving gear component, which can slide up and down, to be set between two root posts 311；Revolution gas is fixed on sliding block 313
The rotation of rotary part 314 is fixed in the rotary parts such as cylinder, angling cylinder or high torque motor 314, the end of lift beam 312
Portion.Above structure slide lift beam 312 can not only on column 311, moreover it is possible to using the rotating part of rotary part 314 as axis
Heart rotation.
The fixed structure 32 of turnover device 30 is then fixed on lift beam 312, fixed structure 32 include be fixed on crossbeam or
Electromagnetic assembly 321 on steel plate and/or the clamp assemblies for being held on people's air defense doorframe side, are specifically as follows and are fixed on lifting
Crossbeam or steel plate on beam 312, electromagnetic assembly 321 and/or clamp assemblies are fixed on crossbeam or steel plate.Due to fixed structure 32
After the fixation for completing people's air defense doorframe, it need to move up or move down under the drive of lift beam 312, in order to ensure people's air defense doorframe
Fixed stability, fixed structure 32 need to be reinforced targetedly, for example, fixed structure 32 rapidoprint need to use it is high-strength
The steel of degree, junction between the two parts need to weld reinforcing rib etc..
Its transmission device 10 equally uses special designing, in the transmission of transmission device 10 placed in position 11 and welding position 12
Wheel is then formed with the accommodating position 14 for lift beam 312 and the insertion of fixed structure 32 using common uniform laying, in flip bit 13,
I.e. transmission wheel is mounted on other than position corresponding with lift beam 312 and fixed structure 32.
In the switching process of people's air defense doorframe, people's air defense doorframe has been completed the welding of one piece of panel, and transmission device 10 will
People's air defense doorframe is sent to flip bit 13, and fixed structure 32 is located above people's air defense doorframe at this time, electromagnetic assembly 321 and/or clamping
Downward, lift beam 312 drives fixed structure 32 to move down to component, clamp to the upper top surface that people's air defense doorframe is welded with panel solid
Fixed, lift beam 312 drives fixed structure 32 to move up, and starts rotary part 314, enable fixed structure 32 drive people's air defense doorframe overturn to
Downward, fixed structure 32 is located at below people's air defense doorframe panel at this time, and lift beam 312 drives fixed structure 32 to move down until lift beam
312 and fixed structure 32 embedded in transmission device 10 accommodating position 14 on, people's air defense doorframe has been completed to overturn at this time, and has been placed in biography
Send device 10 top, people's air defense doorframe is returned to welding position 12, completes the welding of second piece of panel by the revolution of transmission device 10.
Referring to Figure 1, for the placement orientation of the holding people's air defense doorframe in people's air defense doorframe transmit process, the present embodiment also exists
Transmission device 10 is provided with rib 41 along the two sides of its direction of transfer, and being provided on rib 41 prevents leading for people's air defense doorframe sideslip
To wheel 43.And position sensor 42 is set in the position of welding position 12 and flip bit 13 also on rib 41, passes through position
Sensor 42 incudes the position of people's air defense doorframe, and then welding and overturning offer control signal to people's air defense doorframe.
In conclusion steel construction people's air defense door skin welding equipment provided in this embodiment, passes through the electroplating equipment wielding machine of suspension
Hand welds panel and people's air defense doorframe, does not influence the normal transmission of people's air defense doorframe not only, is also greatly reduced to welder's
It is required that improving welding quality and safety coefficient；Turnover device completes automatic turning to people's air defense doorframe, without human intervention, improves
Welding efficiency；It is fed by the left and right of transmission wheel, the cooperation with position sensor and directive wheel, while cooperating welding manipulator
Segmented welding, door leaf welding after no longer need to be corrected processing.
Embodiments described above does not constitute the restriction to the technical solution protection scope.It is any in above-mentioned implementation
Made modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution within the spirit and principle of mode
Within enclosing.
Claims (10)
1. a kind of steel construction people's air defense door skin welding equipment, it is characterised in that: including by can the transmission wheel of positive and negative transmission form
Transmission device, and the welder and turnover device arranged side by side along the direction of transfer of the transmission device；The transmission
The top of device carries people's air defense doorframe to be welded, is placed with panel to be welded on the people's air defense doorframe；The welder, it is right
Welding is completed between the panel and people's air defense doorframe；The turnover device to after welding panel and people's air defense doorframe complete overturning.
2. steel construction people's air defense door skin welding equipment according to claim 1, it is characterised in that: the transmission device edge
Its direction of transfer is divided into doorframe and places position, welding position and flip bit；The welding position is being located at the welder just
Lower section, the flip bit are located at the underface of the turnover device.
3. steel construction people's air defense door skin welding equipment according to claim 2, it is characterised in that: the welder packet
The welding manipulator for including portal frame and being lifted on the portal frame；The welding manipulator is being suspended in the welding position just
Top.
4. steel construction people's air defense door skin welding equipment according to claim 3, it is characterised in that: the turnover device packet
The lift beam that the column for being located at the transmission device two sides by two and liftable are set between two columns is included to form
Lifting portal frame and the fixed structure that is fixed on the lift beam；The lift beam can be along its axial-rotation；It is described solid
Structure is determined for fixing the people's air defense doorframe；It is formed in the flip bit of the transmission device for the lift beam and fixed structure
The accommodating position of insertion；The fixed structure is for fixing the one side for being welded with panel on the people's air defense doorframe, by the lift beam
After promotion, the lift beam rotation drives the people's air defense doorframe overturning, and the lift beam drives the people's air defense doorframe after overturning
It drops in the accommodating position that the lift beam and fixed structure are embedded in the flip bit, the people's air defense doorframe is placed in the overturning
After on position, fixed structure is unclamped.
5. steel construction people's air defense door skin welding equipment according to claim 4, it is characterised in that: the two of the lift beam
End is provided with sliding block, and the sliding block can be slided up and down by lifting cylinder, lift cylinder, lifting chain or driving gear component and be set
It is placed between two columns.
6. steel construction people's air defense door skin welding equipment according to claim 5, it is characterised in that: solid on the slide block
Surely there is rotary part；The rotating part of the rotary part is fixed in the end of the lift beam.
7. steel construction people's air defense door skin welding equipment according to claim 6, it is characterised in that: the fixed structure is
The crossbeam or steel plate being fixed on the lift beam；It is provided on the crossbeam or steel plate for fixing the people's air defense doorframe
Fixed structure.
8. steel construction people's air defense door skin welding equipment according to claim 7, it is characterised in that: the fixed structure is
The electromagnetic assembly being fixed on the crossbeam or steel plate and/or the clamp assemblies for being held on people's air defense doorframe side.
9. steel construction people's air defense door skin welding equipment according to claim 8, it is characterised in that: in the transmission device
Two sides along its direction of transfer are provided with rib；Directive wheel is provided on the rib.
10. steel construction people's air defense door skin welding equipment according to claim 9, it is characterised in that: on the rib
In the position of the welding position and flip bit, position sensor is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822192010.6U CN209491475U (en) | 2018-12-25 | 2018-12-25 | A kind of steel construction people's air defense door skin welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822192010.6U CN209491475U (en) | 2018-12-25 | 2018-12-25 | A kind of steel construction people's air defense door skin welding equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209491475U true CN209491475U (en) | 2019-10-15 |
Family
ID=68153755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822192010.6U Expired - Fee Related CN209491475U (en) | 2018-12-25 | 2018-12-25 | A kind of steel construction people's air defense door skin welding equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209491475U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109531029A (en) * | 2018-12-25 | 2019-03-29 | 清远市广盛民防工程有限公司 | A kind of steel construction people's air defense door skin welding equipment |
| CN110961812A (en) * | 2019-11-22 | 2020-04-07 | 湖南瑞泰欣金属有限公司 | Welding device for door industry production |
| CN113927731A (en) * | 2020-07-14 | 2022-01-14 | 合肥春昌安全科技有限公司 | Civil air defense reinforced concrete door leaf processingequipment |
-
2018
- 2018-12-25 CN CN201822192010.6U patent/CN209491475U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109531029A (en) * | 2018-12-25 | 2019-03-29 | 清远市广盛民防工程有限公司 | A kind of steel construction people's air defense door skin welding equipment |
| CN110961812A (en) * | 2019-11-22 | 2020-04-07 | 湖南瑞泰欣金属有限公司 | Welding device for door industry production |
| CN113927731A (en) * | 2020-07-14 | 2022-01-14 | 合肥春昌安全科技有限公司 | Civil air defense reinforced concrete door leaf processingequipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109531029A (en) | A kind of steel construction people's air defense door skin welding equipment | |
| CN209491475U (en) | A kind of steel construction people's air defense door skin welding equipment | |
| CN206844322U (en) | Rigid connection node of steel pipe column and H-shaped steel beam | |
| CN101927415B (en) | Double-position rotary automatic welding machine | |
| CN106930408A (en) | Rigid connection joint of steel pipe column and H-shaped steel beam and construction method of rigid connection joint | |
| CN110056088A (en) | It is a kind of can the connection structure of Fast Installation girder steel and the installation method of girder steel | |
| CN202808179U (en) | Hoisting clamp and hoisting clamp assembly | |
| CN112077489B (en) | Intelligent manufacturing method of civil air defense door and assembly line thereof | |
| CN207223294U (en) | A kind of holder device for tower welding | |
| CN206065790U (en) | A kind of crawler crane large-sized structural parts positioner | |
| CN208342086U (en) | Excavator otic placode and pin shaft welding mechanism | |
| CN107511613A (en) | A kind of reverse assembling method of power station gates of segmental shape gate flap and special tooling | |
| CN105800466B (en) | A kind of conduction rack | |
| CN214392901U (en) | Welding system of assembled steel structure room | |
| CN204983463U (en) | Convex metal sheet package post structure | |
| CN106044189A (en) | Turnover mechanism of automatic air-conditioner fin taking machine | |
| CN207392463U (en) | Steel plate lap joint structure | |
| CN208532043U (en) | A kind of electric single beam crane | |
| CN208803870U (en) | A kind of protective airtight partition door for subway district of novel middle seam connecting cover plate structure | |
| CN111055115A (en) | Assembling method for block type shield tunneling machine factory | |
| CN101615362A (en) | Be used on the hatch caping of container ship, carrying out the anchor clamps of container demonstration | |
| CN206140013U (en) | Novel welded structure | |
| CN205927586U (en) | Door closure jacking upset processing agency | |
| CN212443951U (en) | Tower crane main chord member multi-station welding frame | |
| CN108506296A (en) | One kind being based on cross section material framework joining method |
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: 20191015 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |