CN109434258A - A kind of vibration-type welding gun clear rifle device and clear rifle method - Google Patents
A kind of vibration-type welding gun clear rifle device and clear rifle method Download PDFInfo
- Publication number
- CN109434258A CN109434258A CN201811475449.8A CN201811475449A CN109434258A CN 109434258 A CN109434258 A CN 109434258A CN 201811475449 A CN201811475449 A CN 201811475449A CN 109434258 A CN109434258 A CN 109434258A
- Authority
- CN
- China
- Prior art keywords
- vibration
- welding gun
- clear rifle
- pressure gas
- high pressure
- 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- Withdrawn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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/328—Cleaning of weld torches, i.e. removing weld-spatter; Preventing weld-spatter, e.g. applying anti-adhesives
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a kind of vibration-type welding gun clear rifle device and clear rifle methods, the vibration-type welding gun clear rifle device includes fixed bracket, attachment base and shaking device, the attachment base is assemblied on fixed bracket, the shaking device is fixed on the attachment base, high-pressure air source is accessed on the shaking device, the shaking device includes starter and vibration generating device, setting is for controlling the starter of the high pressure gas on-off into vibration generating device between the vibration generating device and high-pressure air source, the vibration generating device includes drive rod and jump bit, the drive rod high speed moves back and forth after high pressure gas is passed through vibration generating device, and then the inner nozzle surface for driving jump bit to do high-frequency vibration Butt welding gun is cleared up.Above-mentioned vibration-type welding gun clear rifle device and clear rifle method use the clear rifle mode of vibration-type, not only ingenious in design, convenient for operation；And high safety and reliability, versatility are good.
Description
Technical field
The present invention relates to a kind of welding gun clear rifle devices, more particularly, to a kind of vibration-type welding gun clear rifle device and clear rifle method.
Background technique
Welding gun cleaning plant can be used to clean the inner surface of MIG/MAG torch nozzle in industry and commerce field.Originally
Welding gun cleaner using reamer type clear up.When torch nozzle enters reamer predeterminated position, reamer rotation is cleared up.Its
It has the following disadvantages: in the specific use process
1) it is more complex initially to proofread position for it, when contraposition fully rely on naked eyes judgement (operator must wear goggles,
Hurt eyes to prevent flying slag), in operation, there are high risk of injury, especially in the presence of cause contusion of upper limb and cut wound or
The risk for the clear rifle reamer sucking that physical feeling or clothes are rotated；
2) starting of reamer relies on inductive switch, therefore occasional has error starting or inactive situation；
3) installation and operation of equipment need to have received can just operating for professional training, virtually increase equipment cost,
It is also big to the consumption of electric power.
Summary of the invention
The purpose of the present invention is to provide a kind of vibration-type welding gun clear rifle devices, by the way of shaking clear rifle, to solve
Reamer type cleaning in the prior art has that security reliability is low.
Another object of the present invention is to provide a kind of clear rifle methods of vibration-type welding gun, to solve reamer type in the prior art
Cleaning has that security reliability is low.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of vibration-type welding gun clear rifle device comprising fixed bracket, attachment base and shaking device, the attachment base are assemblied in
On fixed bracket, the shaking device is fixed on the attachment base, and high-pressure air source, the vibration are accessed on the shaking device
Device includes starter and vibration generating device, and setting enters for controlling between vibration generating device and the high-pressure air source
The starter of the high pressure gas on-off of generating device is shaken, the vibration generating device includes drive rod and jump bit, high pressure
The drive rod high speed moves back and forth after gas is passed through vibration generating device, and then jump bit is driven to do high-frequency vibration Butt welding gun
Inner nozzle surface is cleared up.
Further, it is fallen when being equipped with immediately below the jump bit on the fixed bracket for collecting cleaning
Welding slag welding slag box.
Further, the vibration generating device further includes outer barrel, drive end bearing bracket, rear end cap and impact pole, described outer
Be provided with high pressure gas import on cylinder, high-pressure air source gives high pressure gas import gas supply by starter, the drive end bearing bracket and
Rear end cap is sealed at the both ends of outer barrel, and impact pole can reciprocatingly be arranged in the outer barrel along its inner hole, described
There is the first high pressure gas workspace for impact pole to be pushed to rear end cap, and described between the outer wall and outer barrel of impact pole
Impact pole offers inner hole close to one end of rear end cap, and offers the inlet channel being connected with inner hole thereon, the inner hole
And the space between rear end cap and impact column end forms the second high pressure gas for impact pole high speed to be pushed to drive end bearing bracket
Workspace, the charge flow rate and effective forced area of second high pressure gas workspace are all larger than the work of the first high pressure gas
Area, the jump bit are installed on the outer end of drive rod, and the inner end of the drive rod passes through drive end bearing bracket and corresponding impact pole setting, and
It is provided between the inner end and drive end bearing bracket of the drive rod for the limiting component to drive rod stroke limit, on the drive end bearing bracket
First row port is offered, the impact pole offers what internal diameter was connected less than inner hole and with inner hole close to one end of drive rod
Second exhaust port.
Further, the starter and vibration generating device are assemblied in same housing, and the drive end bearing bracket is with after
End cap seal is assemblied in the both ends of the shell.
Further, the starter uses mechanical valve comprising valve seat and spool, be provided on the valve seat into
Gas channel, the high-pressure air source being connected with inlet channel is accessed on the shell, and the spool can reciprocatingly be set to valve
In seat, one end stretches out drive end bearing bracket and the end is equipped with and starts switch, and is provided between the other end and rear end cap of the spool
Reset spring, and two convex shoulders are arranged at intervals in the middle part of the spool, recessed portion is formed between two convex shoulders.
Further, connection seat, the company are provided between starter and vibration generating device in the shell
The connection air flue for inlet channel to be connected with high pressure gas import is provided on logical seat.
Further, the position for spool being corresponded on the rear end cap offers third exhaust outlet.
Further, one end that the spool installation starts switch is provided with external thread section, starts switch interior offer
Mounting hole is fixed with metal transfer set in mounting hole, offers internal screw thread in metal transfer set, start switch and pass through helicitic texture
It is assemblied on spool, stop nut is installed in the inside started switch on spool.
A kind of clear rifle method of vibration-type welding gun comprising following steps:
1) nozzle of welding gun for clearance is placed on the outer end face of jump bit of above-mentioned vibration-type welding gun clear rifle device；
2) unlatching is started switch, drive rod high speed moves back and forth after high pressure gas is passed through in Xiang Zhendong generating device, drives
Jump bit high-frequency vibration makes the nozzle of welding gun also carry out high-frequency vibration and clears up its internal welding slag.
Further, the opening ways started switch: adjusting starts switch the installation site on spool, in turn
The nozzle pressing and unlatching for making welding gun start switch.
Beneficial effects of the present invention are that the vibration-type welding gun clear rifle device and clear rifle method mainly have compared with prior art
Following advantages:
1) compact-sized, ingenious in design；
2) the clear rifle mode of vibration-type is used, shaking device is placed in the side of torch nozzle, opens starter to vibration
Device is passed through high pressure gas, and shaking device generates high speed vibration by jump bit Butt welding gun nozzle, realizes Butt welding gun nozzle interior
Cleaning.Convenient for operation, high safety and reliability；
3) it starts switch and is designed using adjustable structure, adjust the opposite position for starting switch end face and jump bit end face
It sets, can adapt to the nozzle of straight, taper or step type, versatility is good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the vibration-type welding gun clear rifle device that the specific embodiment of the invention provides；
Fig. 2 is the structural schematic diagram of the shaking device for the vibration-type welding gun clear rifle device that the specific embodiment of the invention provides.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is makes to the more thorough of the disclosure understanding
Comprehensively.It should be noted that be referred to as " being fixed on " another component when component, it can directly on the other part or
There may also be components placed in the middle.When a component is considered as " connection " another component, it can be directly to separately
One component may be simultaneously present component placed in the middle.Term as used herein "vertical", "horizontal", "left" and "right"
And similar statement is for illustrative purposes only, is not meant to be the only embodiment.Unless otherwise defined, this paper institute
All technical and scientific terms used have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Term as used herein in the specification of the present invention, which is only for the purpose of describing specific embodiments, to be not intended to
The limitation present invention.Term " and or " used herein includes the arbitrary and all of one or more relevant listed items
Combination.
It please refers to shown in Fig. 1 and Fig. 2, in the present embodiment, a kind of vibration-type welding gun clear rifle device includes fixed bracket 1, connection
Seat 2 and shaking device 3, fixed bracket 1 are vertically arranged, and attachment base 2 is assemblied in the top of fixed bracket 1, are installed outside shaking device 3
There is outer cover 4, and access high pressure gas pipeline 5 on shaking device 3, the inlet end of the high pressure gas pipeline 5 is equipped with gas source triplet
6, the inlet end of gas source triplet 6 is passed through clean compressed air.
Shaking device 3 includes that shell 7, drive end bearing bracket 8, rear end cap 9, starting mechanical valve and vibration generating device, starting are mechanical
Valve and vibration generating device are assemblied in shell 7 and start the top that mechanical valve is located at vibration generating device, drive end bearing bracket 8 and rear end
Lid 9 seals the both ends for being assemblied in shell 7.Intake interface 10 is provided on shell 7, high pressure gas pipeline 5 is connected to intake interface 10
Interior, starting mechanical valve includes valve seat 11 and spool 12, the first inlet channel 13 is provided on valve seat 11, spool 12 can move back and forth
Ground is set in valve seat 11, and one end, which is stretched out drive end bearing bracket 8 and the end and is equipped with, starts switch 14, the other end of spool 12 and rear end
Reset spring 15 is provided between lid 9, and the middle part of spool 12 is arranged at intervals with two convex shoulders, is formed between two convex shoulders
Recessed portion 16, started by press switch 14, spool 12 are moved to the left in valve seat 11, when the recessed portion 16 of spool 12 corresponding first into
When the intake interface in gas channel 13, the first inlet channel 13, which is connected, supplies high-pressure air source to vibration generating device.
One end that the installation of spool 12 starts switch 14 is provided with external thread section, starts switch and offers mounting hole 17 in 14,
It is fixed with metal transfer set 18 in mounting hole 17, offers internal screw thread in metal transfer set 18, starts switch 14 by screw thread knot
Structure is assemblied on spool 12, is equipped with stop nut 19 in the inside for starting switch 14 on spool 12, and rotation starts switch 14 energy
Enough adjust starts switch 14 link position on spool 12, is locked by stop nut 19 to the position for starting switch 14
Fixed, the position that spool 12 is corresponded on rear end cap 9 offers second exhaust port 20.
Connection seat 21 is provided in shell 7 between starter and vibration generating device, is connected to the company of offering on seat 21
Air passage 22, vibration generating device includes outer barrel 23, impact pole 24, jump bit 25 and drive rod 26, is arranged on outer barrel 23
There is high pressure gas import 27, one end of connection air flue 22 is connected with the first inlet channel 13, the other end and high pressure gas import
27 are connected, and can reciprocatingly be provided with impact pole 24, the outer wall and outer barrel of impact pole 24 in outer barrel 23 along its inner hole
There is the first high pressure gas workspace 28 for 24 high speed of impact pole to be pushed to 9 direction of rear end cap, impact pole 24 leans between 23
One end of nearly rear end cap 9 offers inner hole 29, and offers the second inlet channel 30 being connected with inner hole 29, inner hole 29 thereon
And space between 24 end of rear end cap 9 and impact pole is formed for pushing 24 high speed of impact pole to drive end bearing bracket 8 second high
It calms the anger body running area 31, the second high pressure gas works the charge flow rate in 31st area and effective forced area is much larger than the first high pressure gas
The charge flow rate in body running area 28 and effective forced area, offer first row port 32 on drive end bearing bracket 8, and impact pole 24 is close to driving
One end of lever 26 offers the third exhaust outlet 33 that internal diameter is less than inner hole 29 and is connected with inner hole 29, and drive rod 26 uses
T-shape structure, the small one end of outer diameter is as tail end, and the big one end of outer diameter is as head end, and the tail end of drive rod 26 is worn when installation
Cross the setting of drive end bearing bracket 8 and end installation jump bit 25, head end can be to the stroke limit of drive rod 26 as positive stop end, while head
Corresponding impact pole 24 is held to be arranged.
Welding slag box 34 is installed in the underface of jump bit 25 on fixed bracket 1, when cleaning, the welding slag to fall off in nozzle is fallen
Enter and concentrates cleaning after being collected in welding slag box 34.
When cleaning, first the nozzle of welding gun for clearance is placed on the outer end face of jump bit 25, adjusting starts switch 14 in valve
Installation site on core 12, and then contact and press the nozzle of welding gun and start switch 14, make to start switch 14 in open shape
State, when starting switch 14 and being in close state, spool 12 cuts off the first inlet channel 13, is started switch by welding gun pressure
14, spool 12 overcomes the elastic force of reset spring 15 to move downward, and the gas of 15 installation position of reset spring is from second exhaust port 20
Discharge, when the recessed portion 16 on spool 12 moves to the position at the first inlet channel 13, the first inlet channel 13 is connected, high
Body of calming the anger enters in high pressure gas import 27 through connection air flue 22, and the first high pressure gas workspace 28 is passed through high pressure gas and pushes
24 high speed of impact pole is moved to the left, and the gas in the second high pressure gas workspace 31 is from second exhaust port 20 and third exhaust outlet 33
Discharge, when impact pole 24 move downward it is rear to position when, the second inlet channel 30 moves at high pressure gas import 27, high pressure gas
Body largely enters in the second high pressure gas workspace 31 through high pressure gas import 27 because the second high pressure gas workspace 31 into
Throughput and effective forced area are much larger than the charge flow rate and effective forced area of the first high pressure gas workspace 28, the two
Pressure difference push 24 high speed of impact pole to move right, impact pole 24 be moved to before to position when high-speed impact drive rod 26, simultaneously
High pressure gas in second high pressure gas workspace 31 is discharged through the second inlet channel 30 and first row port 32, the second high pressure gas
31 pressure release of body running area, the first high pressure gas workspace 28 are passed through high pressure gas and 24 high speed of impact pole are pushed to be moved to the left, such as
This makes jump bit 25 generate high-frequency vibration repeatedly, and then so that welding gun is generated high-frequency vibration and carry out scarfing cinder.
When in-site installation, 1 road gas source, gas source requirement: flow > 100L/min need to be only provided；Air pressure > 0.3Mpa shake
Dynamic frequency calculates 3000-3500 beats/min with 0.3Mpa.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of vibration-type welding gun clear rifle device, which is characterized in that it includes fixed bracket, attachment base and shaking device, the company
Joint chair is assemblied on fixed bracket, and the shaking device is fixed on the attachment base, accesses high pressure gas on the shaking device
Source, the shaking device include starter and vibration generating device, are arranged between vibration generating device and the high-pressure air source
For controlling the starter of the high pressure gas on-off into vibration generating device, the vibration generating device include drive rod with
Jump bit, the drive rod high speed moves back and forth after high pressure gas is passed through vibration generating device, and then jump bit is driven to do high frequency
The inner nozzle surface of vibration Butt welding gun is cleared up.
2. vibration-type welding gun clear rifle device according to claim 1, which is characterized in that in the impact on the fixed bracket
Welding slag box for collecting the welding slag fallen when cleaning is installed immediately below hammer.
3. vibration-type welding gun clear rifle device according to claim 1, which is characterized in that the vibration generating device further includes outer
Cylinder, drive end bearing bracket, rear end cap and impact pole, high pressure gas import is provided on the outer barrel, and high-pressure air source passes through starting dress
It sets and gives high pressure gas import gas supply, the drive end bearing bracket and rear end cap are sealed at the both ends of outer barrel, energy in the outer barrel
Impact pole is reciprocatingly set along its inner hole, is had between the outer wall and outer barrel of the impact pole for pushing impact pole to
First high pressure gas workspace of rear end cap, and the impact pole offers inner hole close to one end of rear end cap, and opens up thereon
There are the inlet channel being connected with inner hole, the inner hole and rear end cap and the space impacted between column end to be formed for that will rush
Hit the second high pressure gas workspace that pillar height speed pushes drive end bearing bracket to, the charge flow rate of second high pressure gas workspace and effectively
Forced area is all larger than the first high pressure gas workspace, and the jump bit is installed on the outer end of drive rod, in the drive rod
End is provided between the inner end and drive end bearing bracket of the drive rod for drive rod across drive end bearing bracket and corresponding impact pole setting
The limiting component of stroke limit offers first row port on the drive end bearing bracket, and the impact pole is opened close to one end of drive rod
The second exhaust port for being less than inner hole equipped with internal diameter and being connected with inner hole.
4. vibration-type welding gun clear rifle device according to claim 3, which is characterized in that the starter and vibration fill
It sets and is assemblied in same housing, the drive end bearing bracket and rear end cap seal the both ends for being assemblied in the shell.
5. vibration-type welding gun clear rifle device according to claim 4, which is characterized in that the starter uses mechanical valve,
It includes valve seat and spool, and inlet channel is provided on the valve seat, accesses the height being connected with inlet channel on the shell
Pressurized air source, the spool can be reciprocatingly set in valve seat, and one end stretches out drive end bearing bracket and the end is equipped with and starts switch,
It is provided with reset spring between the other end and rear end cap of the spool, and is arranged at intervals with two convex shoulders in the middle part of the spool
Portion forms recessed portion between two convex shoulders.
6. vibration-type welding gun clear rifle device according to claim 4, which is characterized in that in starter and shake in the shell
It is provided with connection seat between dynamic generating device, is provided on the connection seat for inlet channel to be connected with high pressure gas import
Logical connection air flue.
7. vibration-type welding gun clear rifle device according to claim 5, which is characterized in that correspond to the position of spool on the rear end cap
It sets and offers third exhaust outlet.
8. vibration-type welding gun clear rifle device according to claim 5, which is characterized in that the spool installs one started switch
End is provided with external thread section, start switch in offer mounting hole, metal transfer set is fixed in mounting hole, in metal transfer set
Internal screw thread is offered, starts switch and is assemblied on spool by helicitic texture, it is limited in the inside installation started switch on spool
Position nut.
9. a kind of clear rifle method of vibration-type welding gun, which is characterized in that itself the following steps are included:
1) nozzle of welding gun for clearance is placed in the jump bit such as the described in any item vibration-type welding gun clear rifle devices of claim 1-8
Outer end face on；
2) unlatching is started switch, drive rod high speed moves back and forth after high pressure gas is passed through in Xiang Zhendong generating device, drives impact
It hammers high-frequency vibration into shape, so that the nozzle of welding gun is also carried out high-frequency vibration and clear up its internal welding slag.
10. the clear rifle method of vibration-type welding gun according to claim 9, which is characterized in that the opening square started switch
Formula: adjusting starts switch the installation site on spool, and then makes the nozzle pressing of welding gun and unlatching starts switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811475449.8A CN109434258A (en) | 2018-12-04 | 2018-12-04 | A kind of vibration-type welding gun clear rifle device and clear rifle method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811475449.8A CN109434258A (en) | 2018-12-04 | 2018-12-04 | A kind of vibration-type welding gun clear rifle device and clear rifle method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109434258A true CN109434258A (en) | 2019-03-08 |
Family
ID=65557402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811475449.8A Withdrawn CN109434258A (en) | 2018-12-04 | 2018-12-04 | A kind of vibration-type welding gun clear rifle device and clear rifle method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109434258A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020013A (en) * | 2021-03-11 | 2021-06-25 | 中铁隧道局集团有限公司 | Shield constructs machine knife dish mud cake excitation cleaning device |
| CN113172303A (en) * | 2021-05-08 | 2021-07-27 | 余承纯 | Weld joint back chipping device suitable for multiple scenes |
-
2018
- 2018-12-04 CN CN201811475449.8A patent/CN109434258A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020013A (en) * | 2021-03-11 | 2021-06-25 | 中铁隧道局集团有限公司 | Shield constructs machine knife dish mud cake excitation cleaning device |
| CN113172303A (en) * | 2021-05-08 | 2021-07-27 | 余承纯 | Weld joint back chipping device suitable for multiple scenes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109434258A (en) | A kind of vibration-type welding gun clear rifle device and clear rifle method | |
| CN109737414B (en) | Environment-friendly waste incineration device | |
| CN111097247A (en) | Environment-friendly chemical equipment waste gas treatment device and use process | |
| CN109078939A (en) | A kind of iron pipe concrete lining crushing device | |
| CN110948094A (en) | One-stop type welding gun cleaning device | |
| CN209363824U (en) | A kind of vibration-type welding gun clear rifle device | |
| CN209363825U (en) | A kind of vibration-type torch nozzle cleaning plant | |
| CN202264153U (en) | Sand blasting and shot blasting device | |
| CN209363826U (en) | A kind of shaking device of welding gun clear rifle device | |
| CN108819584A (en) | A kind of engraving equipment of work safety | |
| CN109304533A (en) | A kind of shaking device of welding gun clear rifle device | |
| CN207156189U (en) | A kind of portable makita 4100NH with dedusting heat sink | |
| CN109339484B (en) | Wall removal terminal executor and waste recovery formula wall removal robot | |
| CN204108851U (en) | A kind of ash propel polish device of clutch accessory processing | |
| CN209598499U (en) | A kind of device for welding gun cleaning | |
| DE60202445D1 (en) | Apparatus for generating a reciprocation and pneumatic tool | |
| US4936393A (en) | Pneumatic tool | |
| CN208416442U (en) | A kind of architectural engineering perforating device | |
| CN101418671A (en) | Dustproof application and the spurt device of used thereof of foam in building surface boring | |
| CN204449785U (en) | Engine link is swollen disconnected device | |
| CN208246730U (en) | A kind of pneumatic pick | |
| CN101284275B (en) | Engine gudgeon pin bore cleaning method | |
| CN208663698U (en) | A kind of pneumatic type pneumatic pick | |
| CN2554328Y (en) | Airleg rock drill | |
| CN213197381U (en) | Spring pad for nail shooter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190308 |