CN109049127A - A kind of file with slide plate - Google Patents
A kind of file with slide plate Download PDFInfo
- Publication number
- CN109049127A CN109049127A CN201810989917.7A CN201810989917A CN109049127A CN 109049127 A CN109049127 A CN 109049127A CN 201810989917 A CN201810989917 A CN 201810989917A CN 109049127 A CN109049127 A CN 109049127A
- Authority
- CN
- China
- Prior art keywords
- cavity
- sliding
- shaft
- gear
- slide plate
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
- B26D5/22—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member and work feed mechanically connected
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
- B26D7/0608—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by pushers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/16—Perforating by tool or tools of the drill type
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a kind of files with slide plate, including body, the first cavity is provided in the body, the second cavity is provided with above first cavity, the first cavity inner roof wall is provided with motor, the motor power is connected with active rotating shaft, the first driving gear being provided on the active rotating shaft in first cavity, the second driving gear being provided on the active rotating shaft in second cavity, the first sliding cavity is provided with above first cavity, the first sliding cavity inner bottom wall sliding is provided with the first litter.
Description
Technical field
The present invention relates to file processing technique field, specifically a kind of file with slide plate.
Background technique
When punching to the file with slide plate, conventional method often determines file using manual calibration
Then position again punches file, but such method is often because human error makes accuracy error larger, and such method efficiency
It is extremely low, the completely inadaptable demand produced in enormous quantities, and it is time-consuming and laborious using manpower, the more time is wasted, is operated extremely multiple
It is miscellaneous, there are larger defect, need to improve.
Summary of the invention
Deficiency in view of the above technology, the invention proposes a kind of files with slide plate.
A kind of file with slide plate of apparatus of the present invention, including body are provided with the first cavity in the body, described
It is provided with the second cavity above first cavity, the first cavity inner roof wall is provided with motor, and the motor power is connected with master
Turn axis is provided with the first driving gear in first cavity on the active rotating shaft, sets on the active rotating shaft
It is equipped with the second driving gear being located in second cavity, is provided with the first sliding cavity above first cavity, described the
The sliding of one sliding cavity inner bottom wall is provided with the first litter, and the first splined shaft is rotatably provided on first litter, described
It is provided with the first gear engaged with second driving gear on first splined shaft, is provided with third below second cavity
Cavity is rotatably provided with first rotating shaft, is arranged in the first rotating shaft between the third cavity and second cavity
There is the first spline housing with the first splined shaft spline fitted, is provided in the first rotating shaft in the third cavity
First bevel gear, be provided with the second sliding cavity on the left of the third cavity, second sliding cavity and the third cavity it
Between be rotatably provided with threaded rod, the second bevel gear engaged with the first bevel gear, institute are provided on the threaded rod
The mobile station for being slidably fitted in the second sliding cavity and being threadedly engaged with the threaded rod is stated, the mobile station bottom end face is provided with
First rack gear, the second sliding cavity inner bottom wall are provided with the first movable chamber, and the first movable chamber inner bottom wall is provided with third
Sliding cavity is slidably fitted with the first sliding block in the third sliding cavity, and first slider top end face is provided with the second rack gear,
Inner wall is rotatably equipped with the second shaft before and after first movable chamber, is provided in second shaft and first tooth
Item and the second gear of second rack gear engagement, the first cavity top are provided with the 4th cavity, first cavity
Lower section is provided with the 5th cavity, and perforation first cavity is rotatably provided between the 4th cavity and the 5th cavity
Third shaft is provided with the third gear in first cavity in the third shaft, is arranged in the third shaft
There is the third hand tap gear being located in the 4th cavity, is provided with the second movable chamber, second movable chamber on the left of the 4th cavity
It is rotatably provided with the 4th shaft between the 4th cavity, is provided with and the third hand tap gear in the 4th shaft
4th bevel gear of engagement, is provided with the sector gear in second movable chamber in the 4th shaft, and described second
Second sliding block is slidably installed, the second sliding block front end face is provided with to be engaged with the sector gear in movable chamber
Third rack gear, second slider bottom end face are rotatably provided with the second splined shaft.
Further technical solution is provided between second slider bottom end face and the second movable chamber inner bottom wall
Reset spring, the second movable chamber inner bottom wall is provided with the second spline housing with the second splined shaft spline fitted, described
Second splined shaft bottom end is provided with drill bit, the first band being provided in the 5th cavity in the third shaft
It takes turns, is provided with the second belt wheel in the 5th cavity, second belt wheel and described first on second spline housing
Transmission is equipped with belt between belt wheel.
Further technical solution, the second movable chamber right side are provided with first sliding groove, and the second sliding slot connection is set
It is equipped with the 4th sliding cavity, the second sliding block right end face is provided with the second litter, is slidably fitted in the 4th sliding cavity
The first slide plate being fixedly connected with second litter is slidably fitted in first sliding cavity and fixes with first litter
Second slide plate of connection, second slide plate and the first sliding cavity wall are provided with reset spring, first sliding cavity
The oil pocket full of hydraulic oil is provided between the 4th sliding cavity.
Further technical solution, the first cavity inner bottom wall are provided with third sliding slot, sliding in the third sliding slot
Third litter, the 4th gear being provided in first cavity on the third litter, the third sliding slot are installed
Left and right inner wall is respectively arranged with limiting slot, and sliding is provided with the limit being fixedly connected with the third litter in the limiting slot
Block is provided with top pressure spring between the limited block and the limit groove bottom wall.
Further technical solution is provided with installation cavity in the body, is slidably provided in the installation cavity
Three slide plates are provided with reset spring, are provided on the third slide plate between the third slide plate and the installation cavity inner bottom wall
File.
The beneficial effects of the present invention are:
It starts to work, the motor is opened, and the active rotating shaft is driven to rotate, and the active rotating shaft rotation will drive described first
Driving gear and second driving gear rotation, the second driving gear rotation will drive first splined shaft to turn
It is dynamic, while the first rotating shaft will be driven to rotate, the first rotating shaft rotation will drive the threaded rod to rotate, the threaded rod
Rotation will drive the mobile station to move right, while first sliding block will be driven to be moved to the left, while will drive the text
Part folder is moved to the left, and after a period of time, the mobile station drives the third litter to move up, at this point, the first driving gear
It is engaged with the 4th gear, the first driving gear rotation drives the 4th gear rotation, the 4th gear rotation
The third shaft will be driven to rotate, the third shaft rotation will drive second spline housing to rotate, while will drive institute
The rotation of the second splined shaft is stated, while the drill bit will be driven to rotate, the third shaft rotation will drive the 4th shaft to turn
Dynamic, the 4th shaft rotation will drive the sector gear to rotate, and drive the drill bit to move down, at this point, the movement
Platform is disengaged from the second gear, and the punch position of the file is located at immediately below the drill bit, when the sector
When wheel is disengaged from the third rack gear, the file is taken away, then, the motor reversal, the mobile station is to moving to left
It is dynamic, after a period of time, first sliding block is driven to move right, to the separate third litter, so that third litter is to moving down
Dynamic, first driving gear is disengaged from the 4th gear at this time, and device returns to initial position；
Apparatus of the present invention, structure is simple, easy to operate, and extremely intelligent, and present apparatus punching fully achieves automatic operation, nothing
Other operations are needed, the efficiency of work is greatly improved, the quantity of substandard product is greatly reduced, greatly reduces original
The waste of material, and manpower completely has been liberated, greatly accelerate the production process of file.
Detailed description of the invention
It, below will be to embodiment or existing in order to illustrate more clearly of inventive embodiments or technical solution in the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only to invent
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of file with slide plate of the invention.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
State, can it is equivalent by other or have similar purpose alternative features replaced.That is, unless specifically stated, each feature is
An example in a series of equivalent or similar characteristics.
As shown in Figure 1, a kind of file with slide plate of apparatus of the present invention, including body 10, the interior setting of the body 10
There is the first cavity 45, the second cavity 54 is provided with above first cavity 45,45 inner roof wall of the first cavity is provided with electricity
Machine 11, the motor 11 have been connected by power active rotating shaft 48, have been provided on the active rotating shaft 48 positioned at first cavity 45
The first interior driving gear 43 is provided with the second driving gear in second cavity 54 on the active rotating shaft 48
46, the first sliding cavity 42 is provided with above first cavity 45,42 inner bottom wall of the first sliding cavity sliding is provided with first
Litter 50 is rotatably provided with the first splined shaft 52 on first litter 50, be provided on first splined shaft 52 with
The first gear 51 that second driving gear 46 engages, is provided with third cavity 57 below second cavity 54, and described the
First rotating shaft 56 is rotatably provided between three cavitys 57 and second cavity 54, be provided in the first rotating shaft 56 with
First spline housing 53 of 52 spline fitted of the first splined shaft is provided with positioned at the third cavity in the first rotating shaft 56
First bevel gear 55 in 57 is provided with the second sliding cavity 61, second sliding cavity 61 and institute on the left of the third cavity 57
It states and is rotatably provided with threaded rod 60 between third cavity 57, be provided on the threaded rod 60 and the first bevel gear 55
The second bevel gear 58 of engagement is slidably fitted with the mobile station being threadedly engaged with the threaded rod 60 in second sliding cavity 61
62,62 bottom end face of mobile station is provided with the first rack gear 63, and 61 inner bottom wall of the second sliding cavity is provided with the first activity
Chamber 66,66 inner bottom wall of the first movable chamber are provided with third sliding cavity 69, and is slidably fitted in the third sliding cavity 69
One sliding block 68,68 top end surface of the first sliding block are provided with the second rack gear 67, and the 66 front and back inner wall of the first movable chamber can turn
Dynamic is equipped with the second shaft 64, is provided in second shaft 64 and first rack gear 63 and second rack gear 67
The second gear 65 of engagement is provided with the 4th cavity 35 above first cavity 45, is provided with below first cavity 45
5th cavity 17 is rotatably provided with the of perforation first cavity 45 between the 4th cavity 35 and the 5th cavity 17
Three shafts 33 are provided with the third gear 32 in first cavity 45, the third shaft in the third shaft 33
The third hand tap gear 34 being provided in the 4th cavity 35 on 33 is provided with the second movable chamber on the left of the 4th cavity 35
24, the 4th shaft 25, the 4th shaft are rotatably provided between second movable chamber 24 and the 4th cavity 35
It is provided with the 4th bevel gear 36 engaged with the third hand tap gear 32 on 25, is provided in the 4th shaft 25 described in being located at
Sector gear 22 in second movable chamber 24, is slidably equipped with the second sliding block 21 in second movable chamber 24, and described
Two sliding blocks, 21 front end face is provided with the third rack gear 23 engaged with the sector gear 22,21 bottom end face of the second sliding block
Rotatably it is provided with the second splined shaft 20.
Valuably or illustratively, wherein 21 bottom end face of the second sliding block and 24 inner bottom wall of the second movable chamber
Between be provided with reset spring 19,24 inner bottom wall of the second movable chamber is provided with and 20 spline fitted of the second splined shaft
Second spline housing 18,20 bottom end of the second splined shaft are provided with drill bit 12, are provided with and are located in the third shaft 33
First pulley 31 in 5th cavity 17, be provided on second spline housing 18 in the 5th cavity 17
Two belt wheels 16, transmission is equipped with belt 30 between second belt wheel 16 and the first pulley 31.
Valuably or illustratively, wherein first sliding groove 26 is provided on the right side of second movable chamber 24, described second is sliding
Slot 26 is provided with and communicated with the 4th sliding cavity 28, and 21 right end face of the second sliding block is provided with the second litter 27, and the described 4th is sliding
The first slide plate 29 being fixedly connected with second litter 27, sliding in first sliding cavity 42 are slidably fitted in dynamic chamber 28
The second slide plate 41 being fixedly connected with first litter 50 is installed, second slide plate 41 in first sliding cavity 42
Wall is provided with reset spring 75, is provided with the oil full of hydraulic oil between first sliding cavity 42 and the 4th sliding cavity 28
Chamber 40.
Valuably or illustratively, wherein 45 inner bottom wall of the first cavity is provided with third sliding slot, the third sliding slot
Inside it is slidably fitted with third litter 59, the 4th gear being provided in first cavity 45 on the third litter 59
47, described third sliding slot or so inner wall is respectively arranged with limiting slot 37, and sliding is provided with and the third in the limiting slot 37
The limited block 38 that litter 59 is fixedly connected is provided with top pressure spring 39 between 37 bottom wall of the limited block 38 and the limiting slot.
Valuably or illustratively, wherein be provided with installation cavity 71 in the body 10, in the installation cavity 71 slidably
Be provided with third slide plate 72, be provided with reset spring 70, institute between 71 inner bottom wall of the third slide plate 72 and the installation cavity
It states and is provided with file 13 on third slide plate 72.
In the initial state, first driving gear 43 does not engage apparatus of the present invention with the 4th gear 47, described
First spline housing 53 cooperates with first splined shaft 52.
It starts to work, the motor 11 is opened, and the active rotating shaft 48 is driven to rotate, and the active rotating shaft 48 is rotated band
First driving gear 43 and second driving gear 46 rotation are moved, the rotation of the second driving gear 46 will drive institute
The rotation of the first splined shaft 52 is stated, while the first rotating shaft 56 will be driven to rotate, the rotation of first rotating shaft 56 will be described in drive
Threaded rod 60 rotates, and the rotation of threaded rod 60 will drive the mobile station 62 to move right, while described first will be driven to slide
Block 68 is moved to the left, while the file 13 will be driven to be moved to the left, and after a period of time, the mobile station 62 drives described
Three litter 59 move up, at this point, the first driving gear 43 is engaged with the 4th gear 47,43 turns of first driving gear
Dynamic to drive the 4th gear 47 rotation, the 4th gear 47 rotation will drive the third shaft 33 to rotate, the third
The rotation of shaft 33 will drive second spline housing 18 to rotate, while second splined shaft 20 will be driven to rotate, while by band
The drill bit 12 to be moved to rotate, the rotation of third shaft 33 will drive the 4th shaft 25 to rotate, and described 25 turns of 4th shaft
It is dynamic that the sector gear 22 will be driven to rotate, drive the drill bit 12 to move down, at this point, the mobile station 62 and described second
Gear 65 is disengaged from, and the punch position of the file 13 is located at immediately below the drill bit 12, when the sector gear 22 with
When the third rack gear 23 is disengaged from, the file is taken away, then, the motor 11 inverts, and the mobile station 63 is to the left
It is mobile, after a period of time, first sliding block 68 is driven to move right, until far from the third litter 59, so that third litter
59 move down, and first driving gear 43 is disengaged from the 4th gear 47 at this time, and device returns to initial position.
The beneficial effects of the present invention are:
It starts to work, the motor is opened, and the active rotating shaft is driven to rotate, and the active rotating shaft rotation will drive described first
Driving gear and second driving gear rotation, the second driving gear rotation will drive first splined shaft to turn
It is dynamic, while the first rotating shaft will be driven to rotate, the first rotating shaft rotation will drive the threaded rod to rotate, the threaded rod
Rotation will drive the mobile station to move right, while first sliding block will be driven to be moved to the left, while will drive the text
Part folder is moved to the left, and after a period of time, the mobile station drives the third litter to move up, at this point, the first driving gear
It is engaged with the 4th gear, the first driving gear rotation drives the 4th gear rotation, the 4th gear rotation
The third shaft will be driven to rotate, the third shaft rotation will drive second spline housing to rotate, while will drive institute
The rotation of the second splined shaft is stated, while the drill bit will be driven to rotate, the third shaft rotation will drive the 4th shaft to turn
Dynamic, the 4th shaft rotation will drive the sector gear to rotate, and drive the drill bit to move down, at this point, the movement
Platform is disengaged from the second gear, and the punch position of the file is located at immediately below the drill bit, when the sector
When wheel is disengaged from the third rack gear, the file is taken away, then, the motor reversal, the mobile station is to moving to left
It is dynamic, after a period of time, first sliding block is driven to move right, to the separate third litter, so that third litter is to moving down
Dynamic, first driving gear is disengaged from the 4th gear at this time, and device returns to initial position；
Apparatus of the present invention, structure is simple, easy to operate, and extremely intelligent, and present apparatus punching fully achieves automatic operation, nothing
Other operations are needed, the efficiency of work is greatly improved, the quantity of substandard product is greatly reduced, greatly reduces original
The waste of material, and manpower completely has been liberated, greatly accelerate the production process of file.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and
Improvement is both fallen in claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (5)
1. a kind of file with slide plate, including body, it is provided with the first cavity in the body, is set above first cavity
It is equipped with the second cavity, the first cavity inner roof wall is provided with motor, and the motor power is connected with active rotating shaft, the active
The first driving gear being provided in first cavity in shaft is provided with positioned at described second on the active rotating shaft
The second driving gear in cavity, the first cavity top are provided with the first sliding cavity, and the first sliding cavity inner bottom wall is sliding
It is dynamic to be provided with the first litter, it is rotatably provided with the first splined shaft on first litter, is arranged on first splined shaft
There is the first gear engaged with second driving gear, third cavity is provided with below second cavity, the third is empty
It is rotatably provided with first rotating shaft between chamber and second cavity, is provided in the first rotating shaft and first spline
First spline housing of axis spline fitted is provided with the first bevel gear in the third cavity, institute in the first rotating shaft
It states and is provided with the second sliding cavity on the left of third cavity, be rotatably provided between second sliding cavity and the third cavity
Threaded rod, is provided with the second bevel gear engaged with the first bevel gear on the threaded rod, sliding in second sliding cavity
Dynamic to be equipped with the mobile station being threadedly engaged with the threaded rod, the mobile station bottom end face is provided with the first rack gear, and described the
Two sliding cavity inner bottom walls are provided with the first movable chamber, and the first movable chamber inner bottom wall is provided with third sliding cavity, the third
The first sliding block is slidably fitted in sliding cavity, first slider top end face is provided with the second rack gear, first movable chamber
Front and back inner wall is rotatably equipped with the second shaft, is provided in second shaft and first rack gear and described second
The second gear of rack gear engagement, the first cavity top are provided with the 4th cavity, are provided with the 5th below first cavity
Cavity is rotatably provided with the third shaft for penetrating through first cavity between the 4th cavity and the 5th cavity, described
The third gear being provided in first cavity in third shaft is provided with positioned at the described 4th in the third shaft
Third hand tap gear in cavity, the 4th cavity left side are provided with the second movable chamber, second movable chamber and the 4th cavity
Between be rotatably provided with the 4th shaft, be provided in the 4th shaft engaged with the third hand tap gear the 4th cone tooth
Wheel, is provided with the sector gear in second movable chamber in the 4th shaft, in second movable chamber slidably
The second sliding block is installed, the second sliding block front end face is provided with the third rack gear engaged with the sector gear, described
Second slider bottom end face is rotatably provided with the second splined shaft.
2. a kind of file with slide plate according to claim 1, it is characterised in that: second slider bottom end face with
Reset spring is provided between the second movable chamber inner bottom wall, the second movable chamber inner bottom wall is provided with and second flower
Second spline housing of key axis spline fitted, the second splined shaft bottom end are provided with drill bit, are arranged in the third shaft
There are the first pulley being located in the 5th cavity, second be provided in the 5th cavity on second spline housing
Belt wheel, transmission is equipped with belt between second belt wheel and the first pulley.
3. a kind of file with slide plate according to claim 2, it is characterised in that: setting on the right side of second movable chamber
There is first sliding groove, the second sliding slot is provided with and communicated with the 4th sliding cavity, and it is sliding that the second sliding block right end face is provided with second
Pole is slidably fitted with the first slide plate being fixedly connected with second litter, first sliding cavity in the 4th sliding cavity
Inside it is slidably fitted with the second slide plate being fixedly connected with first litter, second slide plate and the first sliding cavity wall
It is provided with reset spring, is provided with the oil pocket full of hydraulic oil between first sliding cavity and the 4th sliding cavity.
4. a kind of file with slide plate according to claim 1, it is characterised in that: the first cavity inner bottom wall setting
There is third sliding slot, third litter is slidably fitted in the third sliding slot, is provided on the third litter positioned at described first
The 4th gear in cavity, described third sliding slot or so inner wall are respectively arranged with limiting slot, and sliding is provided in the limiting slot
The limited block being fixedly connected with the third litter is provided with top pressure spring between the limited block and the limit groove bottom wall.
5. a kind of file with slide plate according to claim 1, it is characterised in that: be provided with installation in the body
Chamber is slidably provided with third slide plate in the installation cavity, is arranged between the third slide plate and the installation cavity inner bottom wall
There is reset spring, is provided with file on the third slide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810989917.7A CN109049127A (en) | 2018-08-28 | 2018-08-28 | A kind of file with slide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810989917.7A CN109049127A (en) | 2018-08-28 | 2018-08-28 | A kind of file with slide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109049127A true CN109049127A (en) | 2018-12-21 |
Family
ID=64757511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810989917.7A Withdrawn CN109049127A (en) | 2018-08-28 | 2018-08-28 | A kind of file with slide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109049127A (en) |
-
2018
- 2018-08-28 CN CN201810989917.7A patent/CN109049127A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181221 |
|
| WW01 | Invention patent application withdrawn after publication |