CN109663985A - A kind of installation cutting equipment for hydraulic engineering pipeline - Google Patents
A kind of installation cutting equipment for hydraulic engineering pipeline Download PDFInfo
- Publication number
- CN109663985A CN109663985A CN201910073671.3A CN201910073671A CN109663985A CN 109663985 A CN109663985 A CN 109663985A CN 201910073671 A CN201910073671 A CN 201910073671A CN 109663985 A CN109663985 A CN 109663985A
- Authority
- CN
- China
- Prior art keywords
- fixedly installed
- clamping
- pipeline
- hydraulic engineering
- pedestal
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/064—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding elongated workpieces, e.g. pipes, bars or profiles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The present invention relates to cutting machine technical fields, and disclose a kind of installation cutting equipment for hydraulic engineering pipeline, including pedestal, the bottom of the pedestal is fixedly installed with wheel, clamping device is fixedly installed at the top of the pedestal, the quantity of the clamping device is two, and the middle part of two clamping devices is fixedly installed with pipeline, the support column being fixedly installed between two clamping devices at the top of the pedestal.This is used for the installation cutting equipment of hydraulic engineering pipeline, pass through sliding block horizontally slipping in slide bar outer surface, the Cutting Length of pipeline can accurately be changed according to scale, in the case where restoring the elastic force effect of spring, clamping bar and limit hole pivot bush unit can be made to achieve the effect that stable, ensure that stability when cutting, avoid the too long or too short of pipe cutting, the problem of secondary cut is carried out to pipeline is resulted in the need for, improves the accuracy of cutting, while improving the construction efficiency of hydraulic engineering.
Description
Technical field
The present invention relates to cutting machine technical field, specially a kind of installation cutting equipment for hydraulic engineering pipeline.
Background technique
Hydraulic engineering is the surface water and groundwater for controlling and deploying nature, reaches and removes the evil emerging sharp purpose and build
Engineering, also referred to as Hydraulic Projects, water is human being's production and essential precious resources of living, but the state of its naturally occurring is simultaneously
Not in full conformity with the needs of the mankind, hydraulic engineering is only built, just can control water flow, prevents flood, and carry out water
It adjusts and distributes, to meet people's lives and production to the needs of water resource, hydraulic engineering needs to build dam, dike, spillway, water
Lock, water inlet, channel, the different types of hydraulic structure such as cross mortise, log chute, fish pass, to realize its target.
In the construction process of hydraulic engineering, generally require that pipeline is installed and is cut, existing Pipe installing is cut
During cutting, often first pipe cutting is got well and is installed again, but in practice often can due to the too long of pipe cutting or
It is too short, it results in the need for carrying out secondary cut to pipeline, to guarantee the accuracy of installation, not only wastes the service efficiency of pipeline,
The efficiency for also resulting in construction of hydro project reduces, in addition, pipeline can generate a tension since cutter are when cutting pipeline,
Since pipeline is fixed extremely, the surface that this tension will lead to pipeline is cracked, and pipeline spalling can be made when serious, do not can guarantee
Therefore the service life of pipeline after installation needs to produce a kind of installation cutting equipment for hydraulic engineering pipeline to solve
State problem.
Summary of the invention
The present invention provides a kind of installation cutting equipment for hydraulic engineering pipeline, has and guarantee pipe cutting and installation
Accurately, the advantages of improving construction efficiency and guaranteeing the service life of pipeline, solves in the construction process of hydraulic engineering, often
It needs that pipeline is installed and is cut, in existing Pipe installing cutting process, often first pipe cutting is got well and is carried out again
Installation, but in practice often can be too long or too short due to pipe cutting, it results in the need for carrying out secondary cut to pipeline, to protect
The accuracy for demonstrate,proving installation, not only wastes the service efficiency of pipeline, and the efficiency for also resulting in construction of hydro project reduces, in addition, by
In cutter when cutting pipeline, pipeline can generate a tension, and since pipeline is fixed extremely, this tension will lead to pipeline
The problem of surface cracks, and pipeline spalling can be made when serious, not can guarantee pipeline service life after installing.
The invention provides the following technical scheme: a kind of installation cutting equipment for hydraulic engineering pipeline, including pedestal, institute
The bottom for stating pedestal is fixedly installed with wheel, and clamping device, the number of the clamping device are fixedly installed at the top of the pedestal
Amount is two, and the middle part of two clamping devices is fixedly installed with pipeline, is fixedly installed with and is located at the top of the pedestal
Support column between two clamping devices, the front of the support column are fixedly installed with operation bench, and the inside of the support column is solid
Dingan County is equipped with hydraulic cylinder, is fixedly installed with mounting plate at the top of the hydraulic cylinder, the two sides of the mounting plate are fixedly installed with
Slide bar, the top surface of the slide bar offer limit hole, and the outer surface movable sleeve of the slide bar is connected to sliding block, two sliding block phases
Separate side is fixedly installed with fixed device, and the bottom of the sliding block is fixedly installed with motor, the output shaft of the motor
It is fixedly connected with cutter.The clamping device includes clamping plate, and the bottom of the clamping plate is fixedly connected with the top surface of pedestal,
The inner wall of the clamping plate two sides is fixedly installed with fixed link, and the quantity of the fixed link is two, two fixed links
The equal movable sleeve in mutually close one end is connected to clamping bar, and two mutually close one end of the fixed link, which are fixedly connected to, is located at folder
Compressed spring inside tight bar, the other end of the compressed spring are fixedly connected in the inner wall of clamping bar, two clamping bars
Mutually close side is fixedly installed with clamping ring, and the quantity of the clamping ring is two, and two clamping rings are arc-shaped
And two clamping rings are flexibly connected with the outer surface of pipeline.
Preferably, the quantity of the limit hole is seven, and seven limit holes are equidistant to be evenly distributed in slide bar
Top surface, the bottom end pivot bush unit of the limit hole and clamping bar.
Preferably, the inside of the support column is fixedly installed with the gag lever post positioned at hydraulic cylinder two sides, the gag lever post
Quantity be two, the outer surface of two gag lever posts with the both ends pivot bush unit of mounting plate.
Preferably, the front of the slide bar is provided with scale, the equidistant front for being evenly distributed in slide bar of the scale.
Preferably, the outer surface of the motor is fixedly installed with electric motor protecting box, and the outer surface of the electric motor protecting box is opened
Equipped with heat release hole.
The present invention have it is following the utility model has the advantages that
1, the installation cutting equipment for being used for hydraulic engineering pipeline by setting slide bar and is provided with scale in the front of slide bar,
It using sliding block horizontally slipping in slide bar outer surface, can accurately change the Cutting Length of pipeline according to scale, recycle connection
Mutual cooperation between block, support rod, vertical bar, clamping bar, recovery spring, cross bar and limit hole is made in the elastic force for restoring spring
Under, clamping bar and limit hole pivot bush unit can be made to achieve the effect that stable, ensure that stability when cutting, avoid pipe
Road is cut too long or too short, is resulted in the need for the problem of carrying out secondary cut to pipeline, is improved the accuracy of cutting, simultaneously
Improve the construction efficiency of hydraulic engineering.
2, the installation cutting equipment for being used for hydraulic engineering pipeline is acted on by the elastic force of compressed spring, can be fine
Guarantee clamping ring be fixedly clamped to pipeline in the case where, can effectively balance out pipeline generation tension, avoid pipeline
The problem of tension cracks surface, pipeline spalling can be made when serious is generated, the service life of pipeline is ensure that, avoids swollen
The pipeline split potential risk present in hydraulic engineering.
3, the installation cutting equipment for being used for hydraulic engineering pipeline utilizes two gag lever posts by the way that two gag lever posts are arranged
With the pivot bush unit of mounting plate, can the track to cutter effectively limited, cut cutter straight down always,
It effectively prevents the cut surface of pipeline from the problem of out-of-flatness occur, ensure that accuracy when Pipe installing, also ensure simultaneously
The stability when cutting equipment is cut.
Detailed description of the invention
Fig. 1 is appearance diagram of the invention；
Fig. 2 is the refinement structural schematic diagram of the fixed device of the present invention；
Fig. 3 is the refinement structural schematic diagram of clamping device of the present invention；
Fig. 4 is the schematic diagram of internal structure of support column of the present invention；
In figure: 1, pedestal；2, wheel；3, clamping device；31, clamping plate；32, fixed link；33, clamping bar；34, compressed spring；
35, clamping ring；4, pipeline；5, support column；6, operation bench；7, hydraulic cylinder；8, mounting plate；9, gag lever post；10, slide bar；11, it limits
Hole；12, sliding block；13, scale；14, fixed device.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-4, a kind of installation cutting equipment for hydraulic engineering pipeline, including pedestal 1, the bottom of pedestal 1
It is fixedly installed with wheel 2, the top of pedestal 1 is fixedly installed with clamping device 3, and clamping device 3 includes clamping plate 31, clamping plate 31
Bottom be fixedly connected with the top surface of pedestal 1, the inner wall of 31 two sides of clamping plate is fixedly installed with fixed link 32, fixed link 32
Quantity is two, and two equal movable sleeves in the mutually close one end of fixed link 32 are connected to clamping bar 33, and two fixed links 32 are mutually close
One end be fixedly connected to the compressed spring 34 inside clamping bar 33, the other end of compressed spring 34 is in clamping bar 33
Inner wall is fixedly connected, and the mutually close side of two clamping bars 33 is fixedly installed with clamping ring 35, and the quantity of clamping ring 35 is two
A, two clamping rings 35 are that arc-shaped and two clamping rings 35 are flexibly connected with the outer surface of pipeline 4, pass through compressed spring 34
Elastic force effect, can be good at guarantee clamping ring 35 be fixedly clamped to pipeline 4 in the case where, can effectively balance out pipe
The tension that road generates avoids pipeline and generates the problem of tension cracks surface, pipeline spalling can be made when serious, ensure that
The service life of pipeline, avoids pipeline potential risk present in hydraulic engineering of spalling, and the quantity of clamping device 3 is two
A, the middle part of two clamping devices 3 is fixedly installed with pipeline 4, and the top of pedestal 1 is fixedly installed with positioned at two clamping devices
Support column 5 between 3, the inside of support column 5 are fixedly installed with the gag lever post 9 positioned at 7 two sides of hydraulic cylinder, the quantity of gag lever post 9
It is two, the outer surface of two gag lever posts 9 is utilized with the both ends pivot bush unit of mounting plate 8 by the way that two gag lever posts 9 are arranged
The pivot bush unit of two gag lever posts 9 and mounting plate 8, can the track to cutter 17 effectively limited, make cutter 17
Always it cuts straight down, effectively prevents the cut surface of pipeline from the problem of out-of-flatness occur, ensure that essence when Pipe installing
True property, while also ensuring stability when cutting equipment cutting, the front of support column 5 is fixedly installed with operation bench 6, supports
The inside of column 5 is fixedly installed with hydraulic cylinder 7, and the top of hydraulic cylinder 7 is fixedly installed with mounting plate 8, and the two sides of mounting plate 8 are fixed
Slide bar 10 is installed, the front of slide bar 10 is provided with scale 13, the equidistant front for being evenly distributed in slide bar 10 of scale 13, root
The Cutting Length of pipeline can accurately be changed according to scale 13, the top surface of slide bar 10 offers limit hole 11, the quantity of limit hole 11
It is seven, the equidistant top surface for being evenly distributed in slide bar 10 of seven limit holes 11, limit hole 11 and the bottom end for being clamped bar 144 are living
Dynamic socket, the outer surface movable sleeve of slide bar 10 are connected to sliding block 12, and two mutually separate sides of sliding block 12 are fixedly installed with fixation
Device 14, fixed device 14 includes link block 141, and the left end of link block 141 is fixedly connected with the right side of sliding block 12, link block
141 right side is fixedly connected with support rod 142, and the inner wall at 142 top of support rod is fixedly installed with vertical bar 143, vertical bar 143
Bottom end movable sleeve is connected to clamping bar 144, and clamping bar 144 runs through the bottom of support rod 142 and extends to the outside of support rod 142,
The outer surface movable sleeve of vertical bar 143, which is connected to, restores spring 145, and the inner wall on the top and support rod 142 of restoring spring 145 is fixed to be connected
It connects, the bottom end for restoring spring 145 is fixedly connected with the top surface of clamping bar 144, and the right side of clamping bar 144 is fixedly connected with cross bar
146, cross bar 146 is through support rod 142 and extends the outside on the right side of support rod 142, and the right side of support rod 142 offers sliding
The size of slot 18, sliding groove 18 is adapted with the diameter of cross bar 146, using link block 141, support rod 142, vertical bar 143,
It is clamped bar 144, restores the mutual cooperation between spring 145, cross bar 146 and limit hole 11, in the elastic force effect for restoring spring 145
Under, clamping bar 144 and 11 pivot bush unit of limit hole can be made to achieve the effect that stable, ensure that stability when cutting, avoid
Pipe cutting it is too long or too short, result in the need for the problem of secondary cut is carried out to pipeline, improve the accuracy of cutting,
The construction efficiency of hydraulic engineering is improved simultaneously, and the bottom of sliding block 12 is fixedly installed with motor 15, and the outer surface of motor 15 is fixed
Electric motor protecting box 16 is installed, the outer surface of electric motor protecting box 16 offers heat release hole, ensure that heat dissipation when motor 15 works
Effect, the output shaft of motor 15 are fixedly connected with cutter 17.
When work, first two pipelines 4 are fixed between two clamping devices 3 respectively, are distinguished using two groups of clamping rings 35
Fixation is clamped to pipeline 4, and two pipelines 4 are installed, good length to be cut is then measured, cuts as needed
Length, pull up cross bar 146 make be clamped bar 144 left with limit hole 11, when then moving sliding block 12 to suitable position,
Unclamping cross bar 146 makes clamping bar 144 and 11 pivot bush unit of limit hole have the function that fixed motor 15, then passes through operation bench 6
Start motor 15 and hydraulic cylinder 7, pipeline 4 is cut, after the completion of cutting, closes motor 15 and liquid finally by operation bench 6
Cylinder pressure 7 simultaneously removes pipeline 4.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of installation cutting equipment for hydraulic engineering pipeline, including pedestal (1) etc., it is characterised in that: the pedestal (1)
Bottom be fixedly installed with wheel (2), be fixedly installed with clamping device (3), the clamping device at the top of the pedestal (1)
(3) quantity is two, and the middle part of two clamping devices (3) is fixedly installed with pipeline (4), the top of the pedestal (1)
Portion is fixedly installed with the support column (5) between two clamping devices (3), and the front of the support column (5) is fixedly installed with
The inside of operation bench (6), the support column (5) is fixedly installed with hydraulic cylinder (7), and the top of the hydraulic cylinder (7) is fixedly mounted
Have mounting plate (8), the two sides of the mounting plate (8) are fixedly installed with slide bar (10), and the top surface of the slide bar (10) offers
The outer surface movable sleeve of limit hole (11), the slide bar (10) is connected to sliding block (12), two sliding blocks (12) it is mutually separate one
Side is fixedly installed with fixed device (14), and the bottom of the sliding block (12) is fixedly installed with motor (15), the motor (15)
Output shaft be fixedly connected with cutter (17), the clamping device (3) includes clamping plate (31), the bottom of the clamping plate (31)
Portion is fixedly connected with the top surface of pedestal (1), and the inner wall of clamping plate (31) two sides is fixedly installed with fixed link (32), described
The quantity of fixed link (32) is two, and two mutually close equal movable sleeves in one end of the fixed link (32) are connected to clamping bar (33),
Two mutually close one end of the fixed link (32) are fixedly connected to the compressed spring (34) internal positioned at clamping bar (33),
The other end of the compressed spring (34) is fixedly connected in the inner wall of clamping bar (33), and two clamping bars (33) are mutually close
Side is fixedly installed with clamping ring (35), and the quantity of the clamping ring (35) is two, and two clamping rings (35) are circle
Arc and two clamping rings (35) are flexibly connected with the outer surface of pipeline (4).
2. a kind of installation cutting equipment for hydraulic engineering pipeline according to claim 1, it is characterised in that: the limit
The quantity in position hole (11) is seven, and seven equidistant top surfaces for being evenly distributed in slide bar (10) of limit hole (11) are described
The bottom end pivot bush unit of limit hole (11) and clamping bar (144).
3. a kind of installation cutting equipment for hydraulic engineering pipeline according to claim 1, it is characterised in that: the branch
The inside of dagger (5) is fixedly installed with the gag lever post (9) positioned at hydraulic cylinder (7) two sides, and the quantity of the gag lever post (9) is two
It is a, both ends pivot bush unit of the outer surface of two gag lever posts (9) with mounting plate (8).
4. a kind of installation cutting equipment for hydraulic engineering pipeline according to claim 1, it is characterised in that: the cunning
The front of bar (10) is provided with scale (13), the equidistant front for being evenly distributed in slide bar (10) of scale (13).
5. a kind of installation cutting equipment for hydraulic engineering pipeline according to claim 1, it is characterised in that: the electricity
The outer surface of machine (15) is fixedly installed with electric motor protecting box (16), and the outer surface of the electric motor protecting box (16) offers heat dissipation
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910073671.3A CN109663985A (en) | 2019-01-25 | 2019-01-25 | A kind of installation cutting equipment for hydraulic engineering pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910073671.3A CN109663985A (en) | 2019-01-25 | 2019-01-25 | A kind of installation cutting equipment for hydraulic engineering pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109663985A true CN109663985A (en) | 2019-04-23 |
Family
ID=66149935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910073671.3A Withdrawn CN109663985A (en) | 2019-01-25 | 2019-01-25 | A kind of installation cutting equipment for hydraulic engineering pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109663985A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204308281U (en) * | 2014-11-17 | 2015-05-06 | 周杰民 | A kind of pipeline clamping cutting device |
| CN205270999U (en) * | 2015-12-11 | 2016-06-01 | 广州永大不锈钢有限公司 | Tubulation unit cutting device |
| CN205702677U (en) * | 2016-06-05 | 2016-11-23 | 江西科技学院 | A kind of high accuracy double end pipe cutter |
| CN107999854A (en) * | 2017-12-01 | 2018-05-08 | 刘秀兰 | A kind of hydraulic engineering adjustable pipeline cutting equipment |
| CN108356886A (en) * | 2018-04-16 | 2018-08-03 | 成超宇 | A kind of tubular object extruding fixation cutter device |
| CN108788296A (en) * | 2018-06-07 | 2018-11-13 | 安徽广美钢业有限公司 | A kind of adjustable stainless steel jointless pipe efficient cutting |
| CN109047591A (en) * | 2018-09-27 | 2018-12-21 | 吴江市凯宝电器有限公司 | A kind of data line fixed-length cutting device |
-
2019
- 2019-01-25 CN CN201910073671.3A patent/CN109663985A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204308281U (en) * | 2014-11-17 | 2015-05-06 | 周杰民 | A kind of pipeline clamping cutting device |
| CN205270999U (en) * | 2015-12-11 | 2016-06-01 | 广州永大不锈钢有限公司 | Tubulation unit cutting device |
| CN205702677U (en) * | 2016-06-05 | 2016-11-23 | 江西科技学院 | A kind of high accuracy double end pipe cutter |
| CN107999854A (en) * | 2017-12-01 | 2018-05-08 | 刘秀兰 | A kind of hydraulic engineering adjustable pipeline cutting equipment |
| CN108356886A (en) * | 2018-04-16 | 2018-08-03 | 成超宇 | A kind of tubular object extruding fixation cutter device |
| CN108788296A (en) * | 2018-06-07 | 2018-11-13 | 安徽广美钢业有限公司 | A kind of adjustable stainless steel jointless pipe efficient cutting |
| CN109047591A (en) * | 2018-09-27 | 2018-12-21 | 吴江市凯宝电器有限公司 | A kind of data line fixed-length cutting device |
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| 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 |
Application publication date: 20190423 |
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| WW01 | Invention patent application withdrawn after publication |