CN107470732A - A kind of welding mould for the processing of light fixture part - Google Patents
A kind of welding mould for the processing of light fixture part Download PDFInfo
- Publication number
- CN107470732A CN107470732A CN201710727371.3A CN201710727371A CN107470732A CN 107470732 A CN107470732 A CN 107470732A CN 201710727371 A CN201710727371 A CN 201710727371A CN 107470732 A CN107470732 A CN 107470732A
- Authority
- CN
- China
- Prior art keywords
- feeding
- welding
- light fixture
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/08—Soldering by means of dipping in molten solder
- B23K1/085—Wave soldering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a kind of welding mould for the processing of light fixture part, including supply unit, the welding unit on rear side of supply unit, cooling unit and the waste heat recovery unit between the welding unit and cooling unit；The welding unit includes support and welder；The supply unit includes the first transmitting device and the second transmitting device, the second conveyer includes left transfer station, right transmission platform and the displacement adjustment device for adjusting the spacing size between left and right transmission platform, and a transmission parts are respectively equipped with the left transfer station and right transmission platform；Second transmitting device includes two symmetrically arranged support arms and the conveyer belt on support arm.Supply unit of the present invention is applicable to the conveying of the workpiece of different size size, more welding equipments need not be set to can be achieved to weld the workpiece of plurality of specifications, equipment investment cost is reduced, in the case where identical cost input and identical place take, production efficiency is greatly improved.
Description
Technical field
The invention belongs to Wave soldering field, more particularly, to a kind of welding mould for the processing of light fixture part.
Background technology
Wave-soldering is to allow the solder side of card directly to contact with high-temperature liquid state tin to reach welding purpose, its high-temperature liquid state tin
An inclined-plane is kept, and liquid tin is formed phenomenon of a lot of similar to wave by special device, so being " wave-soldering ", it is led
It is soldering tin bar to want material.
The welding generally use wave-soldering of PBC plates, in the way by conveyer belt conveying work pieces, passes through ripple in LED lamp
Peak, which welds, causes the tin of liquid to be adhered on PBC plates so that component welding end or pin thereon is connected with PBC plates.It is because right
The bottom surface of PBC plates is operated, and existing mode of movement is all to coordinate transmission plate body using the conveyer belt of left and right two so that plate body
Only both ends contact with conveyer belt, and middle part is hanging, are easy to the absorption of liquid tin up.
But in existing welding equipment, the spacing between conveyer belt is fixed, so as to which a set of equipment can only be to one kind
The PBC plates of specification are welded；When PBC specification difference, it is necessary to welded using other equipment, so as to a factory building
Inside need to configure multiple devices to adapt to the PBC plates of different size, equipment investment cost is high, plant area consumes greatly；It is and artificial
Consumption is also very high.
The content of the invention
The present invention is for overcome the deficiencies in the prior art, there is provided a kind of that welding, fitting for a variety of different size PBC plates can be used
With the wide welding mould for being used for light fixture part and processing of scope.
To achieve these goals, the present invention uses following technical scheme：A kind of welding mould for the processing of light fixture part,
Welding unit, cooling unit including supply unit, on rear side of supply unit and located at the welding unit and cooling unit it
Between waste heat recovery unit；The welding unit includes support and welder；The supply unit includes the first transmitting device
With the second transmitting device, the second conveyer includes left transfer station, right transmission platform and for adjusting between left and right transmission platform
Spacing size displacement adjustment device, be respectively equipped with a transmission parts in the left transfer station and right transmission platform；Second transmission
Device includes two symmetrically arranged support arms and the conveyer belt on support arm；The support is provided with a connection piece, described
Connector by the first regulating member can left and right action on the support, the support arm can by the second regulating member
What is moved up and down is located on the connector.Workpiece can be forwarded automatically by supply unit in the present invention, the process of transmission
In it is subjected to by welding unit, whole-course automation operation, operating efficiency is high；Waste heat recovery unit can be to soldering
Caused toxic gas is collected and reclaimed, and prevents toxic gas to be directly discharged in air, prevents from polluting environment；It is logical
Cross the setting of displacement adjustment device so that the spacing between left and right transmission platform can be adjusted；Meanwhile pass through the first adjustment portion
The setting of part so that the spacing before support arm can be adjusted；So that supply unit is applicable to different size size
Workpiece conveying, without setting more welding equipments to can be achieved to weld the workpiece of plurality of specifications, reduce equipment and throw
Enter cost, more machines can be prevented simultaneously in factory building, and be subjected to simultaneously, operating efficiency is high, is thrown in identical cost
Enter in the case of being taken with identical place, production efficiency improves at least more than 2 times.
Further, the welder includes two feeding parts and wave-soldering part, two feeding part or so pair
What is claimed is located on the support；There is spacing, the wave-soldering part is in the spacing between two feeding part.
Further, the feeding part include rotatable feeding belt, for drive feeding belt rotate actuator and
It is spaced apart in the feeding arm on the feeding belt；There is an angle α between the feeding arm and horizontal line；Because feeding arm is
It is obliquely installed, preferably from top to bottom tilts so that the spacing between feeding arm is gradually increase from the bottom to top；So as to need to only lead to
Cross the second regulating member adjustment support arm to move up and down to specified location, the spacing between the position upper support arm is greater than or waited
In the width of workpiece, you can by support arm workpiece is transmitted；And because there is provided first, second two transmission dresses
Put, so as to only adjust the upper-lower position of the second transmitting device can meet demand, and the length of the second transmitting device is settable
Shorter, so as to which position adjustment is more convenient, the positioning to it is also more easy to realize.
Further, the displacement adjustment device includes left regulating part in the left transfer station, located at right transmission
Right regulating part and screw mandrel on platform；The left regulating part is provided with the left screw being engaged with screw mandrel, is set on the right regulating part
There is the right screw being engaged with screw mandrel；The thread rotary orientation of the left screw and right screw is opposite.
Further, the screw mandrel end connects a rotary handle.
Further, first regulating member includes the screw being removably connected on the support and located at the company
The translot being engaged on fitting with the screw.
Further, second regulating member includes the latch fitting being removably connected on the support arm and located at described
The vertical slot being engaged on connector with the latch fitting.
Further, described feeding arm one end is bent inwards to form a suspension part, and the feeding belt is provided with to be hanged with described
The opening that extension portion is engaged；The feeding arm other end is folded upward at forming an anti-delinking part；By suspension part directly by feeding arm
It is assembled on feeding belt, it is simple in construction so as to need to only set opening to be penetrated for suspension part on feeding belt, it is easy to assemble,
Suspension part can easily be changed.
Further, there is a changeover portion, the changeover portion is by the feeding between the anti-delinking part and the feeding arm
Arm is bent to form downwards；The changeover portion can play the effect of support, and when the width of workpiece is smaller, workpiece will be placed on changeover portion
On, support effect is more preferable.
In summary, the present invention has advantages below：Supply unit is applicable to the conveying of the workpiece of different size size,
More welding equipments need not be set to can be achieved to weld the workpiece of plurality of specifications, reduce equipment investment cost, can be in factory
More machines are prevented simultaneously in room, and are subjected to simultaneously, operating efficiency is high, is accounted in identical cost input and identical place
In the case of, production efficiency improves at least more than 2 times.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention.
Fig. 2 is the structural representation of the present invention.
Fig. 3 is the partial schematic diagram one in Fig. 1.
Fig. 4 is the structural representation of the feeding part of the present invention.
Fig. 5 is the structural representation of the feeding arm of the present invention.
Fig. 6 is the partial schematic diagram two in Fig. 1 of the present invention.
Fig. 7 is the structural representation of flexible transition part in the present invention.
Fig. 8 is the enlarged drawing at B in Fig. 7.
Embodiment
In order that those skilled in the art are better understood from the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, clear, complete description is carried out to the technical scheme in the embodiment of the present invention.
As shown in figures 1-8, it is a kind of for light fixture part processing welding mould, including supply unit, after supply unit
Welding unit, cooling unit 5 and the waste heat recovery unit 6 between the welding unit and cooling unit of side；The welding
Unit includes support 1 and welder 2；The welder 2 includes two feeding parts 21 and wave-soldering part 22, and described two send
Expect that part 21 is symmetrical on the support 1；There is spacing, the wave-soldering part 22 between two feeding part
In the spacing, the wave-soldering part 22 includes the electromagnetic pump directly bought on the market and the steel pipe being connected with electromagnetic pump,
The steel pipe is used to the solder melted being delivered to electromagnetic pump；The feeding part 21 includes rotatable feeding belt
211st, for driving the actuator of feeding belt rotation and being spaced apart in the feeding arm 212 on the feeding belt；The actuator
For motor, the both ends of feeding belt 211 are respectively equipped with a roller, and the actuator is connected with a wherein roller, so as to drive feeding belt to turn
It is dynamic.
Preferably, there is an angle α, the angle α is 30-60 °, is preferably between the feeding arm 212 and horizontal line
60°；Further, the upper end of the feeding arm 212 bends inwards to form a suspension part 213, along length on the feeding belt 211
It is evenly spaced provided with multiple openings 214 to spend direction, the suspension part can be penetrated in the opening 214, so as to realize feeding arm 212
With the connection of feeding belt；The lower end of the feeding arm 212 is folded upward at forming an anti-delinking part 215；The anti-delinking part 215 with it is described
There is a changeover portion 216, the changeover portion 216 is bent to form downwards by the lower end of the feeding arm 212 between feeding arm 212；
Specific manufacturing process is that the lower end for being first about to feeding arm 212 is bent to form downwards changeover portion 216, afterwards again by changeover portion 216
Lower end is folded upward at, and forms described anti-delinking part 215；Whole feeding arm, which is integrally formed, to be made, simple in construction, in terms of processing；And
The lines flow smoothly, will not be scraped in conveying workpieces with workpiece.
The supply unit includes the first transmitting device 3 and the second transmitting device 4, and the second conveyer 3 includes a left side
Transfer station 31, right transmission platform 32 and the displacement adjustment device 33 for adjusting the spacing size between left and right transmission platform, the left biography
Send and a transmission parts 34 are respectively equipped with platform 31 and right transmission platform 32, the transmission parts 34 are the conveyer belt directly bought on the market, left
The both ends of transfer station 31 and right transmission platform 32 are respectively equipped with roller, roller connection motor, and conveyer belt is sheathed with outside roller.
The displacement adjustment device 33 includes left regulating part 331 in the left transfer station, in right transmission platform
Right regulating part 332 and screw mandrel 333, the left regulating part 331 is to be installed in the U-shaped block of left transfer station bottom, the right regulation
Part 332 is the U-shaped block for being installed in right transmission platform bottom；Left transfer station is provided with the left screw being engaged with screw mandrel 333, the right side
Regulating part 332 is provided with the right screw being engaged with screw mandrel 333；The thread rotary orientation of the left screw and right screw on the contrary, so as to
When screw mandrel rotates, you can drive left transfer station and right transmission platform close to each other or remote；For the ease of turn screw mandrel, Wo Men
The end of screw mandrel 333 is connected to rotary handle 334.
Second transmitting device 4 includes two symmetrically arranged support arms 41 and the conveyer belt 42 on support arm；Institute
State support and be provided with a connection piece 11, the connector 11 by the first regulating member 7 can left and right action be located at the support 1
On, the support arm 41 is located on the connector 11 by what the second regulating member 8 can move up and down；First adjustment portion
Part 7 includes the screw 71 that is removably connected on the support 1 and is engaged on the connector 11 with the screw
Translot 72, is interval with the support multiple with screw fit screw, passes through the screw of adjusting screw and diverse location and connects
Connect, you can adjust the distance between the right position of connector, two support arms of adjustment；Further, the screw 71 can be relative
Translot 72 moves left and right, so that support arm can also opposite joints progress fine position.
Second regulating member 8 includes the latch fitting 81 being removably connected on the support arm 41 and located at the connection
The vertical slot 82 being engaged on part 11 with the latch fitting；The latch fitting 81 is screw, is vertically above spaced on the support arm
Uniformly it is provided with multiple screws being engaged with screw；Connected by the screw of adjusting screw and diverse location, you can adjustment branch
The upper-lower position of brace, adjust the height of support arm；Further, the latch fitting 81 can move left and right with respect to vertical slot 82, so as to
So that support arm can also opposite joints progress fine position.
As shown in figs 6-8, a transition member 9, the mistake are respectively equipped between the conveyer belt 42 of two transmission parts 34 and two
Crossing part includes connecting cavity 91, connecting portion 92, flexible transition part 93 and the power-assist structure on flexible transition part；The connection
Chamber 91 is located at the left and right transfer station end, is provided with rolling piece 911 in the connecting cavity 91, and the rolling piece is a rotating shaft, rotating shaft
Both ends are rotatably connected on connection cavity wall；The rotating shaft both ends are respectively equipped with a torsion spring 931, and the one end of torsion spring 931 with
Rotating shaft is connected, and the other end is connected with being connected cavity wall so that rotating shaft after rotating can under the left and right of torsion spring 931 from
Row is replied；The connecting portion 92 is the cylinder being installed on the support member 41, the one end of flexible transition part 93 bonding
On the connecting portion 92, the other end is bonded in the rotating shaft, and when being in original state, the remainder of flexible transition part is complete
Portion is wound in rotating shaft；After flexible transition part is bonded on cylinder, the upper surface of flexible transition part and the upper table of the conveyer belt
Face flush or slightly above conveyer belt upper surface；Be not in the phenomenon of clamping stagnation so as to which workpiece is in course of conveying.
When the width of workpiece is larger, it is necessary to which the position of support member 41 is moved up, to cause workpiece can on feeding arm
Normal conveying；Now there will be difference in height, flexible transition part 93 between transmission parts 34 and conveyer belt 42 to be drawn out, so as to flexible
Transition piece 93 will turn into an inclined-plane, transition be carried out to both differences in height, where being transported to the difference in height when workpiece
Position when, workpiece can be moved on conveyer belt from the upper surface of flexible transition part 93, be not in workpiece end contradict exist
Situation on support member, avoid the phenomenon of silly line workpiece clamping stagnation, ensure that the transport of workpiece is smooth, though transmission parts and conveyer belt it
Between there is difference in height, workpiece continuously can be also transported on conveyer belt；Due to being wound during flexible transition part one end
In rotating shaft, and rotating shaft is connected to torsion spring, and when transmission parts move to the position concordant with conveyer belt, flexible transition part then may be used
In the presence of torsion spring, on auto reeling to flexible transition part, prevent for flexible transition part be clipped in transmission parts and conveyer belt
Between, ensure transmission parts and conveyer belt no matter under which kind of difference in height, workpiece smoothly can be delivered on transmission belt.
It is that rubber is made that the flexible transition part 93, which includes the lower floor 931 being mutually bonded and upper strata 932, levels,；Institute
Stating power-assist structure includes the evenly spaced steel ball holding tank 101 being located in the lower floor 932, is placed in the steel ball holding tank
Steel ball 102 and the perforation 103 passed for steel ball located at upper strata；The diameter of the perforation 103 is less than the diameter of steel ball 102, institute
The height for stating steel ball holding tank 102 is higher than the radius of steel ball 101；So as to ensure that steel ball upper part passes perforation, but will not
Dropped out from perforation, so as to which workpiece is when contacting flexible transition part upper surface, steel ball can roll, so as to subtracting for high degree
Frictional force between small workpiece and flexible transition part so that the transport of workpiece is more smoothly.
Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, it should all belong to the scope of protection of the invention.
Claims (9)
1. a kind of welding mould for the processing of light fixture part, including it is supply unit, the welding unit on rear side of supply unit, cold
But unit（5）And the waste heat recovery unit between the welding unit and cooling unit（6）；The welding unit includes support
（1）And welder（2）；It is characterized in that：The supply unit includes the first transmitting device（3）With the second transmitting device（4）,
The second conveyer（3）Including left transfer station（31）, right transmission platform（32）And for adjusting between left and right transmission platform between
Displacement adjustment device away from size（33）, the left transfer station（31）With right transmission platform（32）On be respectively equipped with a transmission parts（34）；
Second transmitting device（4）Including two symmetrically arranged support arms（41）With the conveyer belt on support arm（42）；It is described
Support is provided with a connection piece（11）, the connector（11）Pass through the first regulating member（7）Can left and right action located at described
Support（1）On, the support arm（41）Pass through the second regulating member（8）What can be moved up and down is located at the connector（11）On.
A kind of 2. welding mould for the processing of light fixture part according to claim 1, it is characterised in that：The welder
（2）Including two feeding parts（21）With wave-soldering part（22）, two feeding part（21）It is symmetrical to be located at the branch
Frame（1）On；There is spacing, the wave-soldering part between two feeding part（22）In the spacing.
A kind of 3. welding mould for the processing of light fixture part according to claim 1, it is characterised in that：The feeding part
（21）Including rotatable feeding belt（211）, for drive feeding belt rotate actuator and be spaced apart in the feeding belt
On feeding arm（212）；The feeding arm（212）There is an angle α between horizontal line.
A kind of 4. welding mould for the processing of light fixture part according to claim 1, it is characterised in that：The displacement regulation
Device（33）Including the left regulating part in the left transfer station（331）, right regulating part in right transmission platform（332）And
Screw mandrel（333）；The left regulating part（331）It is provided with and screw mandrel（333）The left screw being engaged, the right regulating part（332）
It is provided with and screw mandrel（333）The right screw being engaged；The thread rotary orientation of the left screw and right screw is opposite.
A kind of 5. welding mould for the processing of light fixture part according to claim 1, it is characterised in that：The screw mandrel
（333）End connects a rotary handle（334）.
A kind of 6. welding mould for the processing of light fixture part according to claim 1, it is characterised in that：First regulation
Part（7）Including being removably connected to the support（1）On screw（71）With located at the connector（11）The upper and spiral shell
Follow closely the translot being engaged（72）.
A kind of 7. welding mould for the processing of light fixture part according to claim 1, it is characterised in that：Second regulation
Part（8）Including being removably connected to the support arm（41）On latch fitting（81）With located at the connector（11）It is upper with it is described
The vertical slot that latch fitting is engaged（82）.
A kind of 8. welding mould for the processing of light fixture part according to claim 1, it is characterised in that：The feeding arm
（212）One end bends inwards to form a suspension part（213）, the feeding belt（211）It is provided with what is be engaged with the suspension part
Opening（214）；The feeding arm（212）The other end is folded upward at forming an anti-delinking part（215）.
A kind of 9. welding mould for the processing of light fixture part according to claim 1, it is characterised in that：The anti-delinking part
（215）With the feeding arm（212）Between there is a changeover portion（216）, the changeover portion（216）By the feeding arm（212）
It is bent to form downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710727371.3A CN107470732B (en) | 2017-08-23 | 2017-08-23 | A kind of welding mould for the processing of lamps and lanterns part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710727371.3A CN107470732B (en) | 2017-08-23 | 2017-08-23 | A kind of welding mould for the processing of lamps and lanterns part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107470732A true CN107470732A (en) | 2017-12-15 |
| CN107470732B CN107470732B (en) | 2019-03-12 |
Family
ID=60601388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710727371.3A Expired - Fee Related CN107470732B (en) | 2017-08-23 | 2017-08-23 | A kind of welding mould for the processing of lamps and lanterns part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107470732B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203512A (en) * | 1997-05-08 | 1998-12-30 | 松下电器产业株式会社 | Electronic unit soldering apparatus |
| JP2009095834A (en) * | 2007-10-12 | 2009-05-07 | Toyota Motor Corp | Solder feeding device and method of replacing solder reel |
| CN102216017A (en) * | 2008-12-10 | 2011-10-12 | 凯文·斯蒂芬·戴维斯 | Method and apparatus for reflow soldering |
| CN205888305U (en) * | 2016-07-21 | 2017-01-18 | 浙江华尔达热导技术股份有限公司 | Brazing furnace |
| CN206405561U (en) * | 2016-12-29 | 2017-08-15 | 淄博才聚电子科技有限公司 | A kind of semiconductor devices automatic soldering device |
-
2017
- 2017-08-23 CN CN201710727371.3A patent/CN107470732B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203512A (en) * | 1997-05-08 | 1998-12-30 | 松下电器产业株式会社 | Electronic unit soldering apparatus |
| JP2009095834A (en) * | 2007-10-12 | 2009-05-07 | Toyota Motor Corp | Solder feeding device and method of replacing solder reel |
| CN102216017A (en) * | 2008-12-10 | 2011-10-12 | 凯文·斯蒂芬·戴维斯 | Method and apparatus for reflow soldering |
| US8360305B2 (en) * | 2008-12-10 | 2013-01-29 | Kevin Stephen Davies | Method and apparatus for reflow soldering |
| CN205888305U (en) * | 2016-07-21 | 2017-01-18 | 浙江华尔达热导技术股份有限公司 | Brazing furnace |
| CN206405561U (en) * | 2016-12-29 | 2017-08-15 | 淄博才聚电子科技有限公司 | A kind of semiconductor devices automatic soldering device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107470732B (en) | 2019-03-12 |
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Granted publication date: 20190312 |