CN107243605B - Penetrate sand device and using this method for penetrating sand device production film covered sand core - Google Patents
Penetrate sand device and using this method for penetrating sand device production film covered sand core Download PDFInfo
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- CN107243605B CN107243605B CN201710407179.6A CN201710407179A CN107243605B CN 107243605 B CN107243605 B CN 107243605B CN 201710407179 A CN201710407179 A CN 201710407179A CN 107243605 B CN107243605 B CN 107243605B
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- sand
- hole
- connector
- plate
- penetrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention discloses a kind of methods penetrated sand device and make film covered sand core, this sand device of penetrating is including blowing plate, hose and penetrating sand connector, blowing plate has for installing the mounting portion to shell core machine, blows plate equipped with the recess being connected for the sand export with shell core machine and the first hole being connected to recess；One end of hose is connected to the first hole, and sand connector is penetrated in other end connection；Penetrating sand connector has the second hole connecting with hose and the sandblasting hole being connected to the second hole, and sandblasting hole is used for and is placed in being aligned in the core mold on ground into sand hole；Penetrate sand device for by shell core machine air pressure and precoated sand transport into core mold.Present invention utilization blows plate, hose and penetrates sand connector, by on shell core machine air pressure and precoated sand by this penetrate sand device and transport directly in the core mold for being placed in ground, eliminate the work for carrying heavy core mold, the production of fast and easy completion film covered sand core, to reduce the labor intensity of worker, production efficiency is improved.
Description
Technical field
The present invention relates to film covered sand core field shaping techniques, particularly, are related to one kind and penetrate sand device and penetrate sand using this
The method of device production film covered sand core.
Background technique
Existing film covered sand core is made by the penetrating sand machine for adding sand station unified with sand station is penetrated, and this penetrating sand machine is usually wrapped
Including rack, frame top are provided with storage sand warehouse, and the bottom for storing up sand warehouse is sand export, are located at below storage sand warehouse on the rack and are provided with
For placing the working position of core mold.When manufacturing film covered sand core, need operator that mold is transported to the working position of penetrating sand machine
On, after blast, then it is transported to modulus on ground.Since many hand-coated core molds are all bulky metal molds
Tool, mold lead to very much mobile difficulty again, cause labor intensity of workers very big using this penetrating sand machine production film covered sand core, production effect
Rate is low.
Summary of the invention
The present invention provides it is a kind of penetrate sand device and using it is this penetrate sand device production film covered sand core method, to solve to move
The technical issues of dynamic heaviness mold difficulty leads to big labor intensity of workers, low efficiency.
The technical solution adopted by the invention is as follows:
On the one hand, the present invention provides one kind and penetrates sand device, including blows plate, hose and penetrate sand connector, and blowing plate has for pacifying
The mounting portion being filled on shell core machine blows plate and is connected to equipped with the recess being connected for the sand export with shell core machine and with recess
The first hole；One end of hose is connected to the first hole, and sand connector is penetrated in other end connection；Penetrating sand connector has the connect with hose
Two holes and the sandblasting hole being connected to the second hole, sandblasting hole are used for and are placed in being aligned in the core mold on ground into sand hole；
Penetrate sand device for by shell core machine air pressure and precoated sand transport into core mold.
Optionally, the top surface for blowing plate, which is located at recess periphery, is also recessed with mounting groove, is provided in mounting groove for sealing
Blow the sealing ring in gap between plate and shell core machine.
Further, the first hole is in being horizontally disposed with, and installation position is in the bottom surface for blowing plate.The side for blowing plate is equipped with connection first
Screw hole is fixed on by hollow connector in one end of the screw hole in hole, hose, and hollow connector has the screw rod to be locked in screw hole.
Further, the other end of hose is fixedly connected on by hollow connector penetrates sand connector, wherein hollow connector has
Screw rod, the inner wall in the second hole are correspondingly provided with the screw thread with screw rod cooperation.
Further, the transitional pore being additionally provided between the second hole and sandblasting hole in sand connector, the diameter of transitional pore are penetrated
Supporting table is formed less than the diameter in the second hole, and in the intersection in transitional pore and the second hole；Buffering is fixedly installed in supporting table
Plate has the gap passed through under gas pressure for precoated sand between buffer board and the inner wall in the second hole.Buffer board includes and
The convex block that the circular body in formation gap and autonomous agent further protrude out between the inner wall in two holes, convex block are interior with the second hole
Wall interference fit.
Optionally, the bottom surface for penetrating sand connector is recessed with the groove positioned at sandblasting hole periphery, is provided in groove for sealing
Penetrate the sealing ring in gap between sand connector and core mold.
On the other hand, the present invention also provides a kind of using the above-mentioned method for penetrating sand device production film covered sand core, including
Following steps: the corresponding position that will be blown plate and be installed on shell core machine is located at recess below the sand export of shell core machine；By the one of hose
End, which is connected to, blows plate, and sand connector is penetrated in other end connection；Start shell core machine, is displaced downwardly to the sand storage bin of shell core machine and is pressed in the top for blowing plate
The recess on plate is blown in face, sand export alignment；By penetrate sand connector alignment be placed on ground in the core mold at preset distance into
Sand hole；The Sand jet valve door for opening shell core machine, make air pressure and precoated sand on shell core machine by blow plate, hose and penetrate sand connector into
Enter in core mold.
Further, the top surface for blowing plate is provided with sealing ring positioned at sand export and recess periphery；It is pressed under sand storage bin
When blowing the top surface of plate, sealing ring, which is clamped in, to be blown between plate and sand storage bin, and forms sealing to sand export and recess to prevent
Sand leakage.
The method for penetrating sand device and make film covered sand core of the invention, using blowing plate, hose and penetrating sand connector, by shell core machine
On air pressure and precoated sand penetrate sand device by this and transport directly to and be placed in the core mold on ground, eliminate the heavy sand of carrying
The work of core mold, fast and easy complete the production of film covered sand core, to reduce the labor intensity of worker, improve production efficiency.
And this to penetrate sand device simple in construction, easy to disassemble and assemble.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to accompanying drawings, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the preferred embodiment of the present invention penetrated when sand device makes film covered sand core using shell core machine；
Fig. 2 is the partial schematic diagram for blowing plate of the preferred embodiment of the present invention；
Fig. 3 is the top view for penetrating sand connector of the preferred embodiment of the present invention；
Fig. 4 is the cross-sectional view in Fig. 3 along line A-A；
Fig. 5 is the structural schematic diagram of buffer board in Fig. 3；
Fig. 6 is the flow chart of the method for the production film covered sand core of the preferred embodiment of the present invention.
Drawing reference numeral explanation:
1, shell core machine；10, sand storage bin；101, sand export；11, mounting plate；2, core mold；20, into sand hole；3, plate is blown；
30, mounting portion；31, recess；32, the first hole；33, screw hole；34, mounting groove；4, hose；5, hollow connector；6, sand connector is penetrated；
60, the second hole；61, sandblasting hole；62, transitional pore；63, supporting table；64, buffer board；640, main body；641, convex block；65, gap；
66, groove；7, sealing ring.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Fig.1, the preferred embodiment of the present invention provides one kind and penetrates sand device, for by shell core machine 1 air pressure and
Precoated sand is transported into the core mold 2 being placed on ground.There is sand storage bin 10 on shell core machine 1 and be located at immediately below sand storage bin 10
The mounting plate 11 of left and right two.Core mold 2 is placed in ground, apart from 1 preset distance of shell core machine.
Penetrating sand device includes blowing 4, two plate 3, hose hollow connectors 5 and penetrating sand connector 6.Wherein, such as institute in Fig. 1 and Fig. 2
Show, the bottom surface for blowing plate 3 has for installing to the mounting portion 30 on the mounting plate 11 of shell core machine 1, and the top surface for blowing plate 3 is recessed downwards
There is the recess 31 being connected for the sand export 101 with sand storage bin 10, has from the further horizontal extension of recess 31 and be connected to recess 31
The first hole 32, be further extended with from the first hole 32 through the screw hole 33 of 3 side of plate is blown, screw hole 33 is connected to the first hole 32,
And the inner wall of screw hole 33 is equipped with screw thread.The top surface for blowing plate 3, which is located at 31 periphery of recess, is also recessed with mounting groove 34, in mounting groove 34
It is provided with for sealing the sealing ring 7 blown between plate 3 and shell core machine 1.
Referring to Fig. 3 and Fig. 4, penetrating sand connector 6 has the second hole 60 connecting with hose 4 and the spray being connected to the second hole 60
Sand hole 61, sandblasting hole 61 are used for and being aligned in core mold 2 into sand hole 20.Specifically, the second hole 60, which is set to, penetrates sand connector 6
Upper end and through the upper surface of sand connector 6 is penetrated, the inner wall in the second hole 60, which is equipped with the screw thread cooperated with hollow connector 5, (does not scheme
Show).Sandblasting hole 61 is set to the lower end for penetrating sand connector 6 and through the lower surface for penetrating sand connector 6.Second hole 60 and sandblasting hole 61 it
Between be also connected with transitional pore 62, the diameter of transitional pore 62 less than the second hole 60 diameter, and in transitional pore 62 and the second hole 60
Intersection forms supporting table 63.Buffer board 64 is fixedly installed in supporting table 63, between buffer board 64 and the inner wall in the second hole 60
With the gap 65 passed through under gas pressure for precoated sand.
As shown in Figure 5, buffer board 64 includes the circular body 640 that gap 65 is formed between the inner wall in the second hole 60,
And four convex blocks 641 that the outer rim of autonomous agent 640 further protrudes out, the inner wall interference fit of each convex block 641 and the second hole 60.
Sand connector 6 is penetrated in this preferred embodiment, by increasing buffer board 64, sand grains can be from gap when having air pressure in the second hole 60
65 from sandblasting hole 61 by projecting；When there is no air pressure in the second hole 60, sand grains will receive 64 block of buffer board without
It is leaked out from sandblasting hole 61.Thus after closing shell core machine 1 is completed in coremaking, hose 4 and penetrate in sand connector 6 that remaining sand grains will not
It leaks out, in coremaking next time, these remaining sand grains can be injected in core mold 2 under gas pressure, so as to avoid sand
Grain is scattered waste.In addition, the bottom surface for penetrating sand connector 6 is also recessed with the groove 66 positioned at 61 periphery of sandblasting hole, setting in groove 66
Have for sealing the sealing ring penetrated between sand connector 6 and core mold 2 (not shown).
In the present embodiment, hose 4 is rubber hose, and both ends pass through hollow connector 5 respectively to be fixed on and blow plate 3 and penetrate sand and connect
First 6.Hollow connector 5 uses rubber hose connection comprising hollow head and the hollow screw rod extended from head.Head
For filling in hose 4, screw rod is used to cooperate with the locking of screw hole 33 blown on plate 3, or with the second hole 60 for penetrating on sand connector 6
Inner wall is threadedly engaged.This connection structure is simple, easy disassembly and reuse.
It is of the invention to penetrate sand device blowing plate 3, hose 4, hollow connector 5 and penetrate sand connector 6 by simple structure, by shell core
Air pressure and precoated sand on machine 1, which by this are penetrated sand device and transported directly to, to be placed in the core mold 2 on ground, eliminate carry it is stupid
The work of heavy sand core mold 2, fast and easy complete the production of film covered sand core, to reduce the labor intensity of worker, improve production
Efficiency.And sand device is simple in construction, easy to disassemble and assemble for of the invention penetrating, and can be used for connecting the shell core machine 1 or difference of different model
Core mold 2.It blows plate 3 and penetrates the sealing ring being arranged on sand connector 6, sealing can be formed at corresponding docking location,
Prevent sand leakage.It penetrates on sand connector 6 and increases the design of buffer board 64, sand grains can smoothly enter into when there is air pressure so that penetrating in sand connector 6
Sandblasting hole 61, without air pressure when will not sand leakage.
Referring to Fig. 6, the present invention is using the above-mentioned method for penetrating sand device production film covered sand core, comprising the following steps:
Step S100, the corresponding position that will be blown plate 3 and be installed on shell core machine 1, makes recess 31 be located at the sand export of shell core machine 1
101 lower sections；
One end of hose 4 is connected to and blows plate 3 by step S200, and sand connector 6 is penetrated in other end connection；
Step S300 starts shell core machine 1, is displaced downwardly to the sand storage bin 10 of shell core machine 1 and is pressed in the top surface for blowing plate 3, sand export
The recess 31 on plate 3 is blown in 101 alignments；
Step S400, by penetrate sand connector 6 be aligned be placed on ground in the core mold 2 at preset distance into sand hole 20；
Step S500 opens the Sand jet valve door of shell core machine 1, makes air pressure and precoated sand on shell core machine 1 by blowing plate 3, soft
Pipe 4 and penetrate sand connector 6 enter core mold 2 in.
Specifically, referring to Fig.1, this preferred embodiment using shell core machine 1 and it is above-mentioned penetrate sand device toward be placed on ground make a reservation for
Core mold 2 at distance penetrates sand to make film covered sand core, and wherein distance of the core mold 2 apart from shell core machine 1 is no more than hose 4
Range reached by length.Make film covered sand core method the following steps are included:
Plate 3 will be blown to be removably installed on the mounting plate 11 of left and right two of shell core machine 1, and the recess on plate 3 31 will be blown
It is directed at the sand export 101 of 10 bottom end of sand storage bin of shell core machine 1.
Then a hollow connector 5 is installed on and is blown on plate 3, make the screw rod on hollow connector 5 and blow the screw hole 33 on plate 3
Locking, then 4 one end of hose is filled in on the head of hollow connector 5 and is allowed to connect with hose 4, and is with iron wire that consolidation between the two is firm
Gu.
The other end of hose 4 connects another hollow connector 5 in the same way, and by the screw rod of this hollow connector 5
It is locked in the second hole 60 penetrated on sand connector 6.
Start shell core machine 1, sand storage bin 10 moves down until being pressed in the top surface for blowing plate 3, and plate 3 is blown in the alignment of sand export 101
On recess 31.Wherein, the sealing ring 7 positioned at 31 periphery of sand export 101 and recess, storage are provided with due to blowing the top surface of plate 3
When being pressed on the top surface for blowing plate 3 under sand hopper 10, sealing ring 7 is clamped between the top surface for blowing plate 3 and the bottom surface of sand storage bin 10, and right
Sand export 101 and recess 31 form sealing to prevent leak-stopping sand.
Then by penetrate sand connector 6 be aligned be placed on ground in the core mold 2 at preset distance into sand hole 20.
The Sand jet valve door for opening shell core machine 1, makes air pressure and precoated sand on shell core machine 1 by blowing plate 3, hose 4 and penetrating
Sand connector 6 enters in core mold 2, to complete coremaking.
The method of production film covered sand core of the invention, is placed in ground for core mold 2, using blowing plate 3, hose 4, hollow connect
First 5 and penetrate sand connector 6 by shell core machine 1 air pressure and precoated sand sand device is penetrated by this and directly transports core mold on ground
In 2, the work for carrying heavy core mold 2 is eliminated, fast and easy completes the production of film covered sand core, reduces the labour of worker
Intensity improves production efficiency.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. one kind penetrates sand device, which is characterized in that for by shell core machine (1) air pressure and precoated sand transport to being placed in ground
Core mold (2) in, with sand storage bin (10) and the left and right two being located at immediately below sand storage bin (10) installation on shell core machine (1)
Plate (11), the sand device of penetrating includes blowing plate (3), hose (4) and penetrating sand connector (6), and the bottom surface for blowing plate (3), which has, to be used for
To the mounting portion (30) on the mounting plate (11) of shell core machine (1), the top surface for blowing plate (3) is recessed with downwards in shell for installation
The sand storage bin (101) of core machine (1), which is displaced downwardly to be pressed in, to be connected with the sand export (101) of the shell core machine (1) when blowing plate (3) top surface
Recess (31) and the first hole (32) being connected to the recess (31)；One end of the hose (4) is connected to first hole
(32), sand connector (6) are penetrated described in other end connection；Described penetrate sand connector (6) have the second hole connecting with the hose (4)
(60) and with second hole (60) sandblasting hole (61) being connected to, the sandblasting hole (61) are used for and the sand core that is placed on ground
Being aligned into sand hole (20) on mold (2).
2. according to claim 1 penetrate sand device, which is characterized in that the top surface for blowing plate (3) is located at the recess
(31) periphery place is also recessed with mounting groove (34), is provided in the mounting groove (34) for blowing plate (3) and shell core described in sealing
The sealing ring (7) in gap between machine (1).
3. according to claim 1 penetrate sand device, which is characterized in that first hole (32) is in horizontally disposed, the peace
Dress portion (30) is located at the bottom surface for blowing plate (3).
4. according to claim 3 penetrate sand device, which is characterized in that the side for blowing plate (3), which is equipped with, is connected to described the
The screw hole (33), the sky are fixed on by hollow connector (5) in one end of the screw hole (33) in one hole (32), the hose (4)
Heart connector (5) has the screw rod to be locked in the screw hole (33).
5. according to claim 1 penetrate sand device, which is characterized in that the other end of the hose (4) passes through hollow connector
(5) be fixedly connected on and described penetrate sand connector (6), wherein the hollow connector (5) has a screw rod, second hole (60) it is interior
Wall is correspondingly provided with the screw thread with screw rod cooperation.
6. according to claim 1 penetrate sand device, which is characterized in that described penetrate in sand connector (6) is additionally provided with positioned at described
The diameter of transitional pore (62) between second hole (60) and the sandblasting hole (61), the transitional pore (62) is less than second hole
(60) diameter, and supporting table (63) are formed in the intersection of the transitional pore (62) and second hole (60)；The support
It is fixedly installed on platform (63) buffer board (64), has between the buffer board (64) and the inner wall in second hole (60) for covering
The gap (65) that film sand passes through under gas pressure.
7. according to claim 6 penetrate sand device, which is characterized in that the buffer board (64) includes and second hole
(60) circular body (640) of the gap (65) is formed between inner wall, and further protruded out from the main body (640)
The inner wall of convex block (641), the convex block (641) and second hole (60) is interference fitted.
8. according to claim 1 penetrate sand device, which is characterized in that the bottom surface for penetrating sand connector (6), which is recessed with, to be located at
The groove (66) of sandblasting hole (61) periphery is provided in the groove (66) and described penetrates sand connector (6) and sand for sealing
The sealing ring in gap between core mold (2).
9. a kind of use the method for penetrating sand device production film covered sand core any in claim 1 to 8, which is characterized in that
The following steps are included:
By the corresponding position for blowing plate (3) and being installed on the shell core machine (1), the recess (31) is made to be located at the shell core machine
(1) below sand export (101)；
By one end of the hose (4) be connected to it is described blow plate (3), penetrate sand connector (6) described in other end connection；
Start the shell core machine (1), make the sand storage bin (10) of the shell core machine (1) be displaced downwardly to be pressed in the top surface for blowing plate (3),
The recess (31) on plate (3) is blown described in sand export (101) alignment；
By it is described penetrate sand connector (6) alignment be placed on ground on the core mold at preset distance (2) into sand hole (20)；
The Sand jet valve door for opening the shell core machine (1) makes air pressure and precoated sand on the shell core machine (1) blow plate by described
(3), the hose (4) and described penetrate sand connector (6) enter in the core mold (2).
10. the method for production film covered sand core according to claim 9, which is characterized in that the top surface setting for blowing plate (3)
There is the sealing ring (7) positioned at the sand export (101) and the recess (31) periphery；It is pressed under the sand storage bin (10) described
When blowing the top surface of plate (3), the sealing ring (7) be clamped in it is described blow between plate (3) and the sand storage bin (10), and to described
Sand export (101) and the recess (31) form sealing to prevent leak-stopping sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710407179.6A CN107243605B (en) | 2017-06-02 | 2017-06-02 | Penetrate sand device and using this method for penetrating sand device production film covered sand core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710407179.6A CN107243605B (en) | 2017-06-02 | 2017-06-02 | Penetrate sand device and using this method for penetrating sand device production film covered sand core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107243605A CN107243605A (en) | 2017-10-13 |
| CN107243605B true CN107243605B (en) | 2019-03-22 |
Family
ID=60018193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710407179.6A Active CN107243605B (en) | 2017-06-02 | 2017-06-02 | Penetrate sand device and using this method for penetrating sand device production film covered sand core |
Country Status (1)
| Country | Link |
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| CN (1) | CN107243605B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB470844A (en) * | 1935-11-21 | 1937-08-23 | Victor Storie | Improvements in or relating to foundry moulding and the like |
| DE1953818A1 (en) * | 1969-10-25 | 1971-05-06 | Georg Roeth | Sand injection device for sand foundry mould |
| DE2110270A1 (en) * | 1970-04-14 | 1971-10-28 | H. J. Welling - Technische und industrielle Beratung GmbH, 4150 Krefeld | Foundry blow moulding machine |
| GB1341983A (en) * | 1972-01-17 | 1973-12-25 | British Leyland Austin Morris | Production of foundry cores |
| CN103846397A (en) * | 2012-11-30 | 2014-06-11 | 山西方盛液压机电设备有限公司 | Sand adding station and sand shooting station unified fully-automatic core shooter |
| CN204052814U (en) * | 2014-07-07 | 2014-12-31 | 魏洪校 | High sealing penetrates Sha Zui |
| CN204262296U (en) * | 2014-12-08 | 2015-04-15 | 广西玉柴机器股份有限公司 | Miniaturely penetrate sand machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59166351A (en) * | 1983-03-14 | 1984-09-19 | Mitsubishi Heavy Ind Ltd | Spray molding device |
| JPH066224B2 (en) * | 1989-07-18 | 1994-01-26 | 株式会社浪速製作所 | Peeping nozzle for heating mold |
-
2017
- 2017-06-02 CN CN201710407179.6A patent/CN107243605B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB470844A (en) * | 1935-11-21 | 1937-08-23 | Victor Storie | Improvements in or relating to foundry moulding and the like |
| DE1953818A1 (en) * | 1969-10-25 | 1971-05-06 | Georg Roeth | Sand injection device for sand foundry mould |
| DE2110270A1 (en) * | 1970-04-14 | 1971-10-28 | H. J. Welling - Technische und industrielle Beratung GmbH, 4150 Krefeld | Foundry blow moulding machine |
| GB1341983A (en) * | 1972-01-17 | 1973-12-25 | British Leyland Austin Morris | Production of foundry cores |
| CN103846397A (en) * | 2012-11-30 | 2014-06-11 | 山西方盛液压机电设备有限公司 | Sand adding station and sand shooting station unified fully-automatic core shooter |
| CN204052814U (en) * | 2014-07-07 | 2014-12-31 | 魏洪校 | High sealing penetrates Sha Zui |
| CN204262296U (en) * | 2014-12-08 | 2015-04-15 | 广西玉柴机器股份有限公司 | Miniaturely penetrate sand machine |
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| Publication number | Publication date |
|---|---|
| CN107243605A (en) | 2017-10-13 |
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