CN109093217A - A kind of novel high-power spark gap arrangement and its application method - Google Patents
A kind of novel high-power spark gap arrangement and its application method Download PDFInfo
- Publication number
- CN109093217A CN109093217A CN201811068927.3A CN201811068927A CN109093217A CN 109093217 A CN109093217 A CN 109093217A CN 201811068927 A CN201811068927 A CN 201811068927A CN 109093217 A CN109093217 A CN 109093217A
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- sliding
- connection
- working chamber
- motor
- sliding shoe
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention discloses a kind of novel high-power spark gap arrangement and its application methods, including apparatus main body, it is set to the intracorporal processing unit (plant) of described device master and is set to the intracorporal processing platform device of described device master, the processing unit (plant) includes being set to intracorporal first working chamber of described device master, end wall is installed with support spring on the downside of first working chamber, the support spring upper end is installed with the first sliding shoe, connection is equipped with the first limiting slot on the right side of first working chamber, the first sliding shoe right end is installed with the first limited block with first limiting slot sliding connection, connection is equipped with the second sliding cavity on the left of first working chamber, first sliding shoe left end is installed with the second sliding shoe with second sliding cavity sliding connection；The present apparatus, which can automate, is adjusted the position of electrode, the position of processing platform, and can adjust the distance of discharging gap, reduces manual operation, greatly improves work efficiency.
Description
Technical field
The present invention relates to electric sparks to produce and process technical field, specially a kind of novel high-power spark gap arrangement and its makes
Use method.
Background technique
Electrical discharge machining is frequently used for the roughing and finishing of metal works, and setting for electrical discharge machining at present
Standby more, the position of workpiece and discharging gap can all have an impact processing result during processing, in work pieces process
During manual travelling workpiece it is also more troublesome, dangerous, therefore, urgent need want a kind of safe and efficient and can automate into
The mobile heavy-duty spark gap device of row.
Summary of the invention
It is existing for overcoming the purpose of the present invention is to provide a kind of novel high-power spark gap arrangement and its application method
Drawbacks described above in technology.
A kind of novel high-power spark gap arrangement according to the present invention and its application method, including apparatus main body, be set to
The intracorporal processing unit (plant) of described device master and it is set to the intracorporal processing platform device of described device master, the processing unit (plant) packet
It includes and is set to intracorporal first working chamber of described device master, end wall is installed with support spring on the downside of first working chamber, described
Support spring upper end is installed with the first sliding shoe, and connection is equipped with the first limiting slot on the right side of first working chamber, and described first is sliding
Motion block right end is installed with the first limited block with first limiting slot sliding connection, connection on the left of first working chamber
Equipped with the second sliding cavity, first sliding shoe left end is installed with the second sliding with second sliding cavity sliding connection
Block, the second sliding cavity left side connection are equipped with the second limiting slot, and the second sliding shoe left side is installed with and described second
Second limited block of limiting slot sliding connection, is installed with first motor on the upside of second sliding cavity in end wall, and described the
The first screw rod that connection is threadedly engaged with the second sliding shoe is installed on the output shaft of one motor, in first sliding shoe
It is installed with the second motor, is installed with the transmission shaft upwardly extended on the output shaft of second motor, on first working chamber
Side connection is equipped with post-receiving chamber, and the post-receiving chamber left and right sides is respectively symmetrically connected to leads equipped with sliding slot first, passes through on the transmission shaft
Bearing is rotatably assorted the slider guide being connected with first guide runner sliding connection, and connection is equipped on the upside of the post-receiving chamber
Second working chamber, the transmission shaft upper end are installed with first bevel gear, and the first bevel gear right end engagement is connected with the
Two bevel gears, the second working chamber right side end wall is interior to be equipped with the third working chamber of opening to the right, the second bevel gear axle center
It is installed with the second screw rod extended into the right in the third working chamber, is threadedly engaged on second screw rod and is connected with third cunning
Motion block, the third working chamber upside end wall connection are equipped with first sliding groove, are connected on the upside of the first sliding groove equipped with second sliding slot,
Third sliding shoe upper surface is installed with the first connecting rod with first sliding groove sliding connection, first connection
Bar upper end is moved towards before and after being installed with and the second connecting rod with second sliding slot sliding connection, in the third sliding shoe
It is installed with third sliding cavity, is installed with cylinder, the outputting axial power connection of the cylinder on the upside of the third sliding cavity in end wall
There is telescopic rod, the telescopic rod lower end is installed with the electric discharge device with third sliding cavity sliding connection, the electric discharge
Device lower end is fixedly connected with the protective cover being fixedly arranged in the third sliding shoe, is equipped with cavity, the sky in the protective cover
Chamber upper and lower sides end wall is respectively communicated with equipped with through-hole, and the electric discharge device is fixedly connected with to be put with what the through-hole was slidably connected
Electrode is installed with the third limited block of the cavity sliding connection on the discharge electrode.
Further technical solution, the processing platform device includes being set to the intracorporal groove of described device master, described
Machine table is slidably connected in groove, the groove left and right sides end wall, which is respectively symmetrically connected to, is equipped with third guide runner, described
Machine table or so side end face is installed with the slider guide with third guide runner sliding connection, is equipped with and opens in the machine table
Mouthful the 4th upward working chamber is installed with third motor, the output of the third motor in end wall on the left of the 4th working chamber
The third screw rod for extending the connection that is rotatably assorted with end wall on the right side of the 4th working chamber to the right, the third screw rod are installed on axis
On be threadedly engaged the articles holding table being connected with the 4th working chamber sliding connection, bilateral symmetry respectively on the downside of the groove
Connection is equipped with gear cavity, and the machine table lower end surface is connected with spur gear, the spur gear by fixed rack gear engagement
Axle center is installed with the rotary shaft extended into first working chamber to the left, and the rotary shaft left end is installed with third hand tap gear,
The third hand tap gear upper end engagement is connected with the 4th bevel gear that can be moved up and down and be fixedly arranged on the transmission shaft.
Described method includes following steps:
Firstly, processed workpiece is placed on articles holding table by operator when needing workpieces processing, machined electrode position is carried out
Adjustment, starting second the second motor of motor by transmission shaft drive first bevel gear rotation, thus pass through second bevel gear band
Dynamic second screw rod rotation, it is final that the movement on third sliding shoe left and right directions is driven to open when needing to adjust the position of machine table
Dynamic first motor drives the rotation of the first screw rod, thus drive the first sliding shoe to move down by the second sliding shoe, it is final to drive
It second motor, transmission shaft and moves down, transmission shaft is by driving third hand tap gear rotation, to be driven directly by rotary shaft
Gear rotation carries out the movement on front-rear direction eventually by rack drives machine table.
Secondly, starting third motor drives articles holding table to be moved in the lateral direction by third screw rod, at work,
Starting cylinder drives telescopic rod to stretch, to drive electric discharge device and discharge electrode to move up and down adjusting spark gap, most
Change working power eventually, withdraws discharge electrode in protective cover when process finishing.
The beneficial effects of the present invention are: the configuration of the present invention is simple, easy to operate, and when needing workpieces processing, operator
Processed workpiece is placed on articles holding table, the adjustment of machined electrode position is carried out, second the second motor of motor of starting passes through biography
Moving axis drives first bevel gear rotation, so that the rotation of the second screw rod is driven by second bevel gear, it is final to drive third sliding shoe
Movement on left and right directions, when needing to adjust the position of machine table, starting first motor drives the rotation of the first screw rod, thus logical
Crossing the second sliding shoe drives the first sliding shoe to move down, final to drive the second motor, transmission shaft and move down, transmission shaft
By driving third hand tap gear rotation, to be rotated by rotary shaft turn spur, eventually by rack drives machine table into
Movement on row front-rear direction, starting third motor drive articles holding table to be moved in the lateral direction by third screw rod,
When work, starting cylinder drives telescopic rod to stretch, so that electric discharge device and discharge electrode be driven to move up and down adjusting spark
Gap finally changes working power, withdraws discharge electrode in protective cover when process finishing, the present apparatus can be automated to electricity
The position of pole, the position of processing platform are adjusted, and can adjust the distance of discharging gap, reduce manual operation, significantly
It improves work efficiency.
Detailed description of the invention
Fig. 1 is overall structure diagram inside a kind of novel high-power spark gap arrangement of the invention and its application method；
Fig. 2 is the structural schematic diagram of Fig. 1 in the present invention " A ".
Specific embodiment
Below with reference to Fig. 1-2, the present invention is described in detail.
Referring to Fig.1-2, a kind of novel high-power spark gap arrangement and its application method of embodiment according to the present invention, packet
Include apparatus main body 10, the processing unit (plant) being set in described device main body 10 and the processing being set in described device main body 10
Stage apparatus, the processing unit (plant) include the first working chamber 11 being set in described device main body 10, first working chamber
11 downside end walls are installed with support spring 12, and 12 upper end of support spring is installed with the first sliding shoe 13, first work
Connection is equipped with the first limiting slot 14 on the right side of chamber 11, and 13 right end of the first sliding shoe is installed with to be slided with first limiting slot 14
The first limited block 15 being cooperatively connected, connection is equipped with the second sliding cavity 16, first sliding on the left of first working chamber 11
13 left end of block is installed with the second sliding shoe 17 with second sliding cavity 16 sliding connection, and second sliding cavity 16 is left
Side connection is equipped with the second limiting slot 18, and 17 left side of the second sliding shoe is installed with to be slidably matched with second limiting slot 18
Second limited block 19 of connection is installed with first motor 20, the first motor 20 in the 16 upside end wall of the second sliding cavity
Output shaft on be installed with the first screw rod 21 that connection is threadedly engaged with the second sliding shoe 17, in first sliding shoe 13
It is installed with the second motor 22, the transmission shaft 23 upwardly extended, first work are installed on the output shaft of second motor 22
Make connection on the upside of chamber 11 and be equipped with post-receiving chamber 24,24 left and right sides of post-receiving chamber, which is respectively symmetrically connected to, leads 25 equipped with sliding slot first, institute
State the slider guide 26 for being rotatably assorted and being connected with first guide runner 25 sliding connection by bearing on transmission shaft 23, institute
It states on the upside of post-receiving chamber 24 connection and is equipped with the second working chamber 27,23 upper end of transmission shaft is installed with first bevel gear 28, and described the
The engagement of one bevel gear, 28 right end is connected with second bevel gear 29, be equipped in the 27 right side end wall of the second working chamber opening to
Right third working chamber 30,29 axle center of second bevel gear is installed with second extended into the right in the third working chamber 30
Screw rod 31 is threadedly engaged on second screw rod 31 and is connected with third sliding shoe 32, and the 30 upside end wall of third working chamber connects
Logical to be equipped with first sliding groove 33, connection is equipped with second sliding slot 34,32 upper surface of third sliding shoe on the upside of the first sliding groove 33
It is installed with the first connecting rod 35 with the first sliding groove 33 sliding connection, before 35 upper end of first connecting rod is installed with
Trend and the second connecting rod 36 with the second sliding slot 34 sliding connection afterwards are installed with the in the third sliding shoe 32
Three sliding cavities 37 are installed with cylinder 38, the outputting axial power connection of the cylinder 38 in the 37 upside end wall of third sliding cavity
There is telescopic rod 39,39 lower end of telescopic rod is installed with the electric discharge device 40 with the third sliding cavity 37 sliding connection,
40 lower end of electric discharge device is fixedly connected with the protective cover 41 being fixedly arranged in the third sliding shoe 32, in the protective cover 41
Equipped with cavity 42, the 42 upper and lower sides end wall of cavity is respectively communicated with equipped with through-hole 43, the electric discharge device 40 be fixedly connected with
The discharge electrode 44 that the through-hole 43 is slidably connected is installed with 42 company of being slidably matched of cavity on the discharge electrode 44
The third limited block 45 connect.
Valuably or illustratively, the processing platform device includes the groove 46 being set in described device main body 10,
Machine table 47 is slidably connected in the groove 46, the 46 left and right sides end wall of groove is respectively symmetrically connected to leads equipped with third
Sliding slot 48,47 or so the side end face of machine table are installed with the slider guide 49 with the third guide runner 48 sliding connection,
It is equipped with the 4th working chamber 50 of opening upwards in the machine table 47, is installed with third in the 50 left side end wall of the 4th working chamber
Motor 51 is installed on the output shaft of the third motor 51 to extend to rotate with the 50 right side end wall of the 4th working chamber to the right and match
The third screw rod 52 of connection is closed, is threadedly engaged and is connected with and 50 company of being slidably matched of the 4th working chamber on the third screw rod 52
The articles holding table 53 connect, bilateral symmetry connection is equipped with gear cavity 54 respectively on the downside of the groove 46, and 47 lower end surface of machine table is logical
It crosses fixed rack gear engagement and is connected with spur gear 55,55 axle center of spur gear is installed with extends into first work to the left
Make the rotary shaft 56 in chamber 11,56 left end of rotary shaft is installed with third hand tap gear 57, and 57 upper end of third hand tap gear is nibbled
Conjunction is connected with the 4th bevel gear 58 that can be moved up and down and be fixedly arranged on the transmission shaft 23.
Described method includes following steps:
Firstly, processed workpiece is placed on articles holding table 53 by operator when needing workpieces processing, machined electrode position is carried out
The adjustment set, second the second motor of motor 22 of starting drive first bevel gear 28 to rotate by transmission shaft 23, to pass through second
Bevel gear 29 drives the second screw rod 31 to rotate, and the final movement driven on 32 left and right directions of third sliding shoe adds when needing to adjust
When the position of work platform, starting first motor 20 drives the rotation of the first screw rod 21, thus sliding by the drive of the second sliding shoe 17 first
Motion block 13 moves down, final that the second motor 22, transmission shaft 23 and 58 is driven to move down, and transmission shaft 23 drives the by 58
Third hand tap gear 57 rotates, to be rotated by 56 turn spur 55 of rotary shaft, carries out eventually by rack drives machine table 47
Movement on front-rear direction.
Secondly, starting third motor 51 drives articles holding table 53 to be moved in the lateral direction by third screw rod 52,
When work, starting cylinder 38 drives telescopic rod 39 to stretch, so that electric discharge device 40 and discharge electrode 44 be driven to move up and down
Spark gap is adjusted, working power is finally changed, withdraws discharge electrode 44 in protective cover 41 when process finishing.
When needing workpieces processing, processed workpiece is placed on articles holding table 53 by operator, carries out machined electrode position
The adjustment set, second the second motor of motor 22 of starting drive first bevel gear 28 to rotate by transmission shaft 23, to pass through second
Bevel gear 29 drives the second screw rod 31 to rotate, and the final movement driven on 32 left and right directions of third sliding shoe adds when needing to adjust
When the position of work platform, starting first motor 20 drives the rotation of the first screw rod 21, thus sliding by the drive of the second sliding shoe 17 first
Motion block 13 moves down, final that the second motor 22, transmission shaft 23 and 58 is driven to move down, and transmission shaft 23 drives the by 58
Third hand tap gear 57 rotates, to be rotated by 56 turn spur 55 of rotary shaft, carries out eventually by rack drives machine table 47
Movement on front-rear direction, starting third motor 51 drive articles holding table 53 to be moved in the lateral direction by third screw rod 52
Dynamic, at work, starting cylinder 38 drives telescopic rod 39 to stretch, to drive electric discharge device 40 and about 44 discharge electrode
It is mobile to adjust spark gap, finally change working power, withdraws discharge electrode 44 in protective cover 41 when process finishing.
The beneficial effects of the present invention are: the configuration of the present invention is simple, easy to operate, and when needing workpieces processing, operator
Processed workpiece is placed on articles holding table, the adjustment of machined electrode position is carried out, second the second motor of motor of starting passes through biography
Moving axis drives first bevel gear rotation, so that the rotation of the second screw rod is driven by second bevel gear, it is final to drive third sliding shoe
Movement on left and right directions, when needing to adjust the position of machine table, starting first motor drives the rotation of the first screw rod, thus logical
Crossing the second sliding shoe drives the first sliding shoe to move down, final to drive the second motor, transmission shaft and move down, transmission shaft
By driving third hand tap gear rotation, to be rotated by rotary shaft turn spur, eventually by rack drives machine table into
Movement on row front-rear direction, starting third motor drive articles holding table to be moved in the lateral direction by third screw rod,
When work, starting cylinder drives telescopic rod to stretch, so that electric discharge device and discharge electrode be driven to move up and down adjusting spark
Gap finally changes working power, withdraws discharge electrode in protective cover when process finishing, the present apparatus can be automated to electricity
The position of pole, the position of processing platform are adjusted, and can adjust the distance of discharging gap, reduce manual operation, significantly
It improves work efficiency.
Those skilled in the art can define, can in the case of not departing from overall spirit of the invention and design
To make the various modifications for above embodiments.It falls within the scope of protection of the present invention.Protection scheme of the invention
It is subject to claims appended hereto.
Claims (2)
1. a kind of novel high-power spark gap arrangement and its application method, including apparatus main body, it is set in described device main body
Processing unit (plant) and be set to the intracorporal processing platform device of described device master, it is characterised in that: the processing unit (plant) includes
It is set to intracorporal first working chamber of described device master, end wall is installed with support spring, the branch on the downside of first working chamber
Support spring upper end is installed with the first sliding shoe, and connection is equipped with the first limiting slot, first sliding on the right side of first working chamber
Block right end is installed with the first limited block with first limiting slot sliding connection, and connection is set on the left of first working chamber
There is the second sliding cavity, first sliding shoe left end is installed with the second sliding with second sliding cavity sliding connection
Block, the second sliding cavity left side connection are equipped with the second limiting slot, and the second sliding shoe left side is installed with and described second
Second limited block of limiting slot sliding connection, is installed with first motor on the upside of second sliding cavity in end wall, and described the
The first screw rod that connection is threadedly engaged with the second sliding shoe is installed on the output shaft of one motor, in first sliding shoe
It is installed with the second motor, is installed with the transmission shaft upwardly extended on the output shaft of second motor, on first working chamber
Side connection is equipped with post-receiving chamber, and the post-receiving chamber left and right sides is respectively symmetrically connected to leads equipped with sliding slot first, passes through on the transmission shaft
Bearing is rotatably assorted the slider guide being connected with first guide runner sliding connection, and connection is equipped on the upside of the post-receiving chamber
Second working chamber, the transmission shaft upper end are installed with first bevel gear, and the first bevel gear right end engagement is connected with the
Two bevel gears, the second working chamber right side end wall is interior to be equipped with the third working chamber of opening to the right, the second bevel gear axle center
It is installed with the second screw rod extended into the right in the third working chamber, is threadedly engaged on second screw rod and is connected with third cunning
Motion block, the third working chamber upside end wall connection are equipped with first sliding groove, are connected on the upside of the first sliding groove equipped with second sliding slot,
Third sliding shoe upper surface is installed with the first connecting rod with first sliding groove sliding connection, first connection
Bar upper end is moved towards before and after being installed with and the second connecting rod with second sliding slot sliding connection, in the third sliding shoe
It is installed with third sliding cavity, is installed with cylinder, the outputting axial power connection of the cylinder on the upside of the third sliding cavity in end wall
There is telescopic rod, the telescopic rod lower end is installed with the electric discharge device with third sliding cavity sliding connection, the electric discharge
Device lower end is fixedly connected with the protective cover being fixedly arranged in the third sliding shoe, is equipped with cavity, the sky in the protective cover
Chamber upper and lower sides end wall is respectively communicated with equipped with through-hole, and the electric discharge device is fixedly connected with to be put with what the through-hole was slidably connected
Electrode is installed with the third limited block of the cavity sliding connection on the discharge electrode.
2. a kind of novel high-power spark gap arrangement according to claim 1 and its application method, it is characterised in that: described
Processing platform device includes being set to the intracorporal groove of described device master, is slidably connected with machine table in the groove, institute
It states groove left and right sides end wall and is respectively symmetrically connected to and be equipped with third guide runner, described machine table or so side end face is installed with and described the
The slider guide of three guide runners sliding connection, interior the 4th working chamber for being equipped with opening upwards of the machine table, the 4th work
Make to be installed with third motor in end wall on the left of chamber, is installed on the output shaft of the third motor and extends and the 4th work to the right
Make end wall on the right side of chamber to be rotatably assorted the third screw rod of connection, is threadedly engaged and is connected with and the 4th work on the third screw rod
The articles holding table of chamber sliding connection, bilateral symmetry connection is equipped with gear cavity, the machine table lower end respectively for the groove downside
Face is connected with spur gear by fixed rack gear engagement, and the spur gear axle center is installed with extends into first work to the left
Make intracavitary rotary shaft, the rotary shaft left end is installed with third hand tap gear, and the third hand tap gear upper end engagement is cooperatively connected
There is the 4th bevel gear that can be moved up and down and be fixedly arranged on the transmission shaft;Described method includes following steps:
Firstly, processed workpiece is placed on articles holding table by operator when needing workpieces processing, machined electrode position is carried out
Adjustment, starting second the second motor of motor by transmission shaft drive first bevel gear rotation, thus pass through second bevel gear band
Dynamic second screw rod rotation, it is final that the movement on third sliding shoe left and right directions is driven to open when needing to adjust the position of machine table
Dynamic first motor drives the rotation of the first screw rod, thus drive the first sliding shoe to move down by the second sliding shoe, it is final to drive
It second motor, transmission shaft and moves down, transmission shaft is by driving third hand tap gear rotation, to be driven directly by rotary shaft
Gear rotation carries out the movement on front-rear direction eventually by rack drives machine table;Secondly, starting third motor passes through third
Screw rod drives articles holding table to be moved in the lateral direction, and at work, starting cylinder drives telescopic rod to stretch, thus band
Dynamic electric discharge device and discharge electrode move up and down adjusting spark gap, finally change working power, will electric discharge when process finishing
Electrode is withdrawn in protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068927.3A CN109093217A (en) | 2018-09-13 | 2018-09-13 | A kind of novel high-power spark gap arrangement and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068927.3A CN109093217A (en) | 2018-09-13 | 2018-09-13 | A kind of novel high-power spark gap arrangement and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109093217A true CN109093217A (en) | 2018-12-28 |
Family
ID=64866224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811068927.3A Withdrawn CN109093217A (en) | 2018-09-13 | 2018-09-13 | A kind of novel high-power spark gap arrangement and its application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109093217A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496991A (en) * | 2019-09-06 | 2019-11-26 | 东阳阿语机械科技有限公司 | One kind can pinpoint perforating device based on bearing |
-
2018
- 2018-09-13 CN CN201811068927.3A patent/CN109093217A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496991A (en) * | 2019-09-06 | 2019-11-26 | 东阳阿语机械科技有限公司 | One kind can pinpoint perforating device based on bearing |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181228 |
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| WW01 | Invention patent application withdrawn after publication |