CN205237227U - Burr clearing device in built -in impedor high accuracy pipeline - Google Patents
Burr clearing device in built -in impedor high accuracy pipeline Download PDFInfo
- Publication number
- CN205237227U CN205237227U CN201521043842.1U CN201521043842U CN205237227U CN 205237227 U CN205237227 U CN 205237227U CN 201521043842 U CN201521043842 U CN 201521043842U CN 205237227 U CN205237227 U CN 205237227U
- Authority
- CN
- China
- Prior art keywords
- knife bar
- lower roll
- bar body
- impedor
- fixed mount
- 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- Withdrawn - After Issue
Links
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The utility model discloses a burr clearing device in built -in impedor high accuracy pipeline, including two roller burr clearing devices (3), impedance arrangement (2), two roller burr clearing devices (3) are inserted to impedance arrangement (2) one end, and the looks remote site passes through mount (1) to be connected with the production facility angularly adjustable, the utility model discloses not only effective the solution adopts traditional cutter arbor can appear becoming flexible with welding seam burr laminating degree as burring device, cutting edge, and the cutter arbor receives the influence of factors such as pipe size, cross sectional shape, and application scope is narrow, has effectively solved moreover to adopt traditional bar magnet the bending can appear as impedor, bar magnet, and the problem is not concentrated to the magnetic line of force.
Description
Technical field
The utility model relates to Suppression of High-frequency Welding Devices technical field, is specifically related to a kind of built-in impedor high accuracy pipeline lining inner burr removing apparatus.
Background technology
High-frequency welding originates from the fifties in last century, and it is kelvin effect and the neighborhood effect of utilizing high frequency electric to produce, the new welding process that steel plate and other metal material are docked. The appearance of high-frequency welding technology and maturation, directly promoted the great development of ERW industry, it is the critical process that ERW (ERW) is produced, the quality of high-frequency welding quality, directly have influence on the bulk strength of welded tube product, credit rating and speed of production. Along with I cross the development of automobile industry and building trade, little of heat radiation aluminum pipe, large to building pipe, in process, all can use high-frequency welding technology, enterprise is in pipe production process, the weld seam burr forming in pipeline welding process need to be removed, mainly there is following drawback in the equipment that enterprise adopts:
One, going in weld seam burr process, adopt traditional knife bar, knife bar is by fixing with production line, weld while deburring, in order to ensure the quality of deburring, conventionally the knife bar of selecting knife bar diameter and caliber size to match, otherwise will affect crudy, if because do not mate, knife bar is in long-time deburring process, there will be the not tight problem of blade and weld seam laminating, if the ratio-frequency welding of different tube diameters is taken over the knife bar of being all furnished with different-diameter and cross sectional shape, comprise pipe, flat tube, square tube, can greatly increase again the production cost of enterprise, therefore need to develop a kind of burr remover that adapts to various calibers and different cross section shape,
Two, conventionally adopt independent bar magnet as impedor, in operation process, magnetic bar, along with the working time is elongated, there will be deformation, causes the magnetic line of force not concentrated, thereby affects the effect of high-frequency welding.
Summary of the invention
The purpose of this utility model is to provide a kind of built-in impedor ratio-frequency welding to take over lining inner burr removing apparatus, the utility model not only effectively solves and adopts traditional knife bar as burr remover, blade and weld seam burr laminating degree there will be loosening, knife bar is subject to the impact of the factor such as line size, cross sectional shape, narrow application range, and efficiently solve the traditional bar magnet of employing as impedor, and bar magnet there will be bending, and the magnetic line of force is concentration problem not.
The utility model is achieved through the following technical solutions:
A kind of built-in impedor high accuracy pipeline lining inner burr removing apparatus, comprise two roller burr removing devices (3), impedance means (2), two roller burr removing devices (3) are inserted in impedance means (2) one end, and opposite end is connected with production equipment angle is adjustable by fixed mount (1), it is characterized in that:
Described pair of roller burr removing device (3) comprises knife bar body (31), on knife bar body (31), be provided with immovable support (32), on immovable support (32), be provided with cutting blade (33), on the knife bar body (31) at immovable support (32) rear, be provided with chip removal through hole (34), knife bar body (31) is also provided with top roll positioner (4), lower roll positioner A(5), lower roll positioner B(5 '), top roll positioner (4) is arranged at lower roll positioner A(5) and lower roll positioner B(5 ') between knife bar body (31) upside, top roll positioner (4) bilateral symmetry is provided with stationary roll (11), top roll positioner (4), lower roll positioner A(5), lower roll positioner B(5 ') be all rotationally connected by rotating shaft and knife bar body (31), stationary roll (11) is rotationally connected by central shaft and knife bar body (31), between top roll positioner (4) and knife bar body (31), be provided with adjusting nut (35), lower roll positioner A(5), lower roll positioner B(5 ') and knife bar body (31) between be provided with respectively hydraulic jack (36), rebounding mechanism (6),
Described impedance means (2) comprises pull bar (21), pull bar (21) one end is connected with fixed mount (1), opposite end is provided with impedor (7), impedor (7) comprises hollow seamless pipe (71), seamless pipe (71) outside wall surface has evenly been horizontally disposed with multiple reinforcement convex tendons (72) vertically, seamless pipe (71) outside wall surface is coated with insulation sleeve (73), between insulation sleeve (73) and seamless pipe (71), be provided with multiple horizontally disposed bar magnets vertically (74), seamless pipe (71) one end is fixedly connected with pull bar (21), opposite end is provided with connector (75), impedance means (2) is pegged graft by connector (75) and knife bar body (31) end of two roller burr removing devices (3),
On described fixed mount (1), be also provided with oil water separator (8), oil water separator (8) is connected with hydraulic jack (36) by oil-piping (81), is communicated with the interlayer (9) that seamless pipe (71) and the insulation sleeve (73) of impedor (7) form by waterpipe (82).
The further Technological improvement plan of the utility model is:
Described top roll positioner (4) comprises top roll fixed mount (41), top roll fixed mount (41) is provided with top roll (42) by central shaft, top roll fixed mount (41) end is rotationally connected by rotating shaft and knife bar body (31), front end is provided with threaded adjusting hole (43), is provided with adjusting nut (35) in threaded adjusting hole (43).
The further Technological improvement plan of the utility model is:
Described lower roll positioner A(5), lower roll positioner B(5 ') include lower roll fixed mount (51), lower roll fixed mount (51) front end is provided with lower roll (52) by central shaft, end is rotationally connected by rotating shaft and knife bar body (31), lower roll fixed mount (51) is connected with knife bar body (31) elasticity by rebounding mechanism (6), the adjustable connection of hydraulic jack (36) that lower roll fixed mount (51) middle part arranges with knife bar body (31) opposite position by locating hole (53).
The further Technological improvement plan of the utility model is:
Described rebounding mechanism (6) comprises set bolt (61), spring (62), knife bar body (31) bottom is provided with blind hole (311), blind hole (311) center is provided with screwed hole (312), spring (62) is arranged in blind hole (311), lower roll fixed mount (51) is connected with screwed hole (312) by set bolt (61), and the free end of spring (62) is connected with the upper wall surface contact of lower roll fixed mount (51).
The further Technological improvement plan of the utility model is:
Described bar magnet (74) is arranged in the detent of adjacent reinforcement convex tendon (72) formation.
The further Technological improvement plan of the utility model is:
Described connector (75) entirety is coniform, is provided with wedge shape connecting hole (751) on sidewall, and impedance means (2) mates grafting by wedge shape connecting hole (751) with burr removing device (3) end.
The further Technological improvement plan of the utility model is:
Described insulation sleeve (73) is made up of epoxide resin material.
The utility model compared with prior art, has following obvious advantage:
One, the utility model knife bar body is respectively provided with registration roller, two lower registration roller, top roll can weld according to weld seam the actual height of muscle by the adjusting of adjusting nut, regulate the cutting output of blade, two lower registration rollers are by the adjusting of hydraulic jack, adapt to produce the ratio-frequency welding adapter of different tube diameters, allow the weldering muscle of blade and weld seam tightly fit, in the time of the welded pipe of processing different cross section shape, only need to change the blade on knife rest;
Two, the utility model adopts two lower rolls location, can significantly improve the precision of the maintenance horizontal direction of blade in working angles, top roll positioner bilateral symmetry is provided with stationary roll can ensure the cutting output of cutting blade for a long time, thereby has significantly improved the crudy that ratio-frequency welding is taken over.
Three, impedor of the present utility model adopts seamless pipe as carrier is installed, on seamless pipe, equal angles arranges multiple reinforcement convex tendons vertically, adjacent reinforcement convex tendon forms detent, thereby can load multiple magnetic bars, and not only the magnetic line of force is more concentrated, significantly improve the welding effect of high-frequency welding, and strengthen convex tendon and can also significantly improve the intensity of seamless pipe, the magnetic line of force is not offset, in coolant injection process, magnetic bar also there will not be skew, thereby improves welding quality.
In sum, the quality that the utility model not only can significantly improve ratio-frequency welding takes over inner-burr cleaning, thereby improve the quality of welded pipe, and the utility model goes for the welded pipe of different tube diameters size, cross sectional shape, thereby reduce the production cost of enterprise, and the impedor magnetic line of force is concentrated, welding quality is high.
Brief description of the drawings
Fig. 1 is the utility model perspective view;
Fig. 2 is the two roller burr removing device cross-sectional view of the utility model;
Fig. 3 is the two roller burr removing device perspective view of the utility model;
Fig. 4 is the utility model impedance means structural representation;
Fig. 5 is the utility model Fig. 4 A place structure enlarged diagram;
Fig. 6 is the utility model Fig. 4 B place structure enlarged diagram;
Fig. 7 is that the utility model Fig. 4 C-C is to cross-sectional view;
Fig. 8 is the utility model working state schematic representation.
Detailed description of the invention
As shown in Fig. 1 to 8, the utility model comprises two roller burr removing devices 3, impedance means 2, two roller burr removing devices 3 are inserted in impedance means 2 one end, opposite end is connected with production equipment angle is adjustable by fixed mount 1, described pair of roller burr removing device 3 comprises knife bar body 31, on knife bar body 31, be provided with immovable support 32, on immovable support 32, be provided with cutting blade 33, on the knife bar body 31 at immovable support 32 rears, be provided with chip removal through hole 34, knife bar body 31 is also provided with top roll positioner 4, lower roll positioner A5, lower roll positioner B5 ', top roll positioner 4, lower roll positioner A5, lower roll positioner B5 ' is provided with accommodating chamber 314 at knife bar body 31 opposite positions, top roll positioner 4 is arranged at knife bar body 31 upsides between lower roll positioner A5 and lower roll positioner B5 ', top roll positioner 4 bilateral symmetry are provided with stationary roll 11, top roll positioner 4, lower roll positioner A5, lower roll positioner B5 ' is all rotationally connected by rotating shaft and knife bar body 31, stationary roll 11 is rotationally connected by central shaft and knife bar body 31, between top roll positioner 4 and knife bar body 31, be provided with adjusting nut 35, lower roll positioner A5, between lower roll positioner B5 ' and knife bar body 31, be provided with respectively hydraulic jack 36, rebounding mechanism 6,
Described impedance means 2 comprises pull bar 21, pull bar 21 one end are connected with fixed mount 1, opposite end is provided with impedor 7, impedor 7 comprises hollow seamless pipe 71, seamless pipe 71 outside wall surface have evenly been horizontally disposed with multiple reinforcement convex tendons 72 vertically, seamless pipe 71 outside wall surface are coated with insulation sleeve 73, between insulation sleeve 73 and seamless pipe 71, be provided with multiple horizontally disposed bar magnets 74 vertically, seamless pipe 71 one end are fixedly connected with pull bar 21, opposite end is provided with connector 75, and impedance means 2 is pegged graft by connector 75 and knife bar body 31 ends of two roller burr removing devices 3;
On described fixed mount 1, be also provided with oil water separator 8, oil water separator 8 is connected with hydraulic jack 36 by oil-piping 81, oil-piping 81 adopts copper pipe 10 to be communicated with hydraulic jack 36 as oil pipeline, copper pipe is first by pull bar 21 central lumen, enter connector 75 inside along impedor 7 outside wall surface, then enter knife bar body 31 internal chamber 313, last and hydraulic jack 36 is communicated with, control the lifting of hydraulic jack 36, this setup can effectively prevent that oil pipeline high temperature from damaging; Be communicated with the interlayer 9 that seamless pipe 71 and the insulation sleeve 73 of impedor 7 form by waterpipe 82, waterpipe 82 enters interlayer 9 by the inner cavity chamber of pull bar, is bar magnet 74 operation of lowering the temperature in high-frequency welding process;
Described top roll positioner 4 comprises top roll fixed mount 41, top roll fixed mount 41 is provided with top roll 42 by central shaft, top roll fixed mount 41 ends are rotationally connected by rotating shaft and knife bar body 31, and front end is provided with threaded adjusting hole 43, are provided with adjusting nut 35 in threaded adjusting hole 43;
Described lower roll positioner A5, lower roll positioner B5 ' include lower roll fixed mount 51, lower roll fixed mount 51 front ends are provided with lower roll 52 by central shaft, end is rotationally connected by rotating shaft and knife bar body 31, lower roll fixed mount 51 is connected with knife bar body 31 elasticity by rebounding mechanism 6, the adjustable connection of hydraulic jack 36 that lower roll fixed mount 51 middle parts arrange with knife bar body 31 opposite positions by locating hole 53;
Described rebounding mechanism 6 comprises set bolt 61, spring 62, knife bar body 31 bottoms are provided with blind hole 311, blind hole 311 centers are provided with screwed hole 312, spring 62 is arranged in blind hole 311, lower roll fixed mount 51 is connected with screwed hole 312 by set bolt 61, and the free end of spring 62 is connected with the upper wall surface contact of lower roll fixed mount 51;
Described bar magnet 74 is arranged in the detent that adjacent reinforcement convex tendon 72 forms;
Described connector 75 entirety are coniform, are provided with wedge shape connecting hole 751 on sidewall, and impedance means 2 mates grafting by wedge shape connecting hole 751 with burr removing device 3 ends;
Described insulation sleeve 73 is made up of epoxide resin material.
In conjunction with Fig. 1 to 8 summary course of work of the present utility model:
Take in process at ratio-frequency welding, the two roller burr removing devices 3 of the utility model and impedance means 2 are used in conjunction with, connector 75 on impedance means 2 inserts knife bar body 31 ends, and connect by wedge shape connecting hole 751, by the oil-piping 81 of oil water separator 8, waterpipe 82 is respectively hydraulic jack 36 conveying liquid force feeds, for impedor 7 is carried cooling water, then adjust lower roll positioner A5 by the lifting of adjusting hydraulic jack 36, lower roll positioner B5 ', thereby adjust the distance between cutting blade 33 and the weld seam weldering muscle on immovable support 32, cutting blade 33 is contacted with burr, also make the direct of travel of cutting blade 33 and the central axis keeping parallelism of knife bar body 31 simultaneously, then by measuring the height of weld seam weldering muscle, adjust the cutting depth of cutting blade 33 by adjusting nut 35, in process, can make the laminating between cutting blade 33 and weld seam weldering muscle by the adjustment of hydraulic jack 36 at any time, rebounding mechanism 6 is in the time of the adjustment of hydraulic jack 36, can promote in time lower roll fixed mount 51, the lining inner burr removing apparatus that is circular pipe shown in the utility model Fig. 1 to 7, in the time that needs are processed square pipe, the shape that only need to change cutting blade 33 just can, this device is specially adapted to circular pipe, it is high that the utility model in use has the precision of removing, stability is strong, manipulate the features such as simple
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned embodiment, also comprises the technical scheme being made up of above technical characterictic. It should be pointed out that for those skilled in the art, not departing under the prerequisite of the utility model principle, can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.
Claims (7)
1. a built-in impedor high accuracy pipeline lining inner burr removing apparatus, comprise two roller burr removing devices (3), impedance means (2), two roller burr removing devices (3) are inserted in impedance means (2) one end, opposite end is connected with production equipment angle is adjustable by fixed mount (1), it is characterized in that:
Described pair of roller burr removing device (3) comprises knife bar body (31), on knife bar body (31), be provided with immovable support (32), on immovable support (32), be provided with cutting blade (33), on the knife bar body (31) at immovable support (32) rear, be provided with chip removal through hole (34), knife bar body (31) is also provided with top roll positioner (4), lower roll positioner A(5), lower roll positioner B(5 '), top roll positioner (4) is arranged at lower roll positioner A(5) and lower roll positioner B(5 ') between knife bar body (31) upside, top roll positioner (4) bilateral symmetry is provided with stationary roll (11), top roll positioner (4), lower roll positioner A(5), lower roll positioner B(5 ') be all rotationally connected by rotating shaft and knife bar body (31), stationary roll (11) is rotationally connected by central shaft and knife bar body (31), between top roll positioner (4) and knife bar body (31), be provided with adjusting nut (35), lower roll positioner A(5), lower roll positioner B(5 ') and knife bar body (31) between be provided with respectively hydraulic jack (36), rebounding mechanism (6),
Described impedance means (2) comprises pull bar (21), pull bar (21) one end is connected with fixed mount (1), opposite end is provided with impedor (7), impedor (7) comprises hollow seamless pipe (71), seamless pipe (71) outside wall surface has evenly been horizontally disposed with multiple reinforcement convex tendons (72) vertically, seamless pipe (71) outside wall surface is coated with insulation sleeve (73), between insulation sleeve (73) and seamless pipe (71), be provided with multiple horizontally disposed bar magnets vertically (74), seamless pipe (71) one end is fixedly connected with pull bar (21), opposite end is provided with connector (75), impedance means (2) is pegged graft by connector (75) and knife bar body (31) end of two roller burr removing devices (3),
On described fixed mount (1), be also provided with oil water separator (8), oil water separator (8) is connected with hydraulic jack (36) by oil-piping (81), is communicated with the interlayer (9) that seamless pipe (71) and the insulation sleeve (73) of impedor (7) form by waterpipe (82).
2. the built-in impedor high accuracy of one according to claim 1 pipeline lining inner burr removing apparatus, it is characterized in that: described top roll positioner (4) comprises top roll fixed mount (41), top roll fixed mount (41) is provided with top roll (42) by central shaft, top roll fixed mount (41) end is rotationally connected by rotating shaft and knife bar body (31), front end is provided with threaded adjusting hole (43), is provided with adjusting nut (35) in threaded adjusting hole (43).
3. the built-in impedor high accuracy of one according to claim 1 and 2 pipeline lining inner burr removing apparatus, it is characterized in that: described lower roll positioner A(5), lower roll positioner B(5 ') include lower roll fixed mount (51), lower roll fixed mount (51) front end is provided with lower roll (52) by central shaft, end is rotationally connected by rotating shaft and knife bar body (31), lower roll fixed mount (51) is connected with knife bar body (31) elasticity by rebounding mechanism (6), the adjustable connection of hydraulic jack (36) that lower roll fixed mount (51) middle part arranges with knife bar body (31) opposite position by locating hole (53).
4. the built-in impedor high accuracy of one according to claim 3 pipeline lining inner burr removing apparatus, it is characterized in that: described rebounding mechanism (6) comprises set bolt (61), spring (62), knife bar body (31) bottom is provided with blind hole (311), blind hole (311) center is provided with screwed hole (312), spring (62) is arranged in blind hole (311), lower roll fixed mount (51) is connected with screwed hole (312) by set bolt (61), and the free end of spring (62) is connected with the upper wall surface contact of lower roll fixed mount (51).
5. the built-in impedor high accuracy of one according to claim 1 pipeline lining inner burr removing apparatus, is characterized in that: described bar magnet (74) is arranged in the detent of adjacent reinforcement convex tendon (72) formation.
6. a kind of built-in impedor high accuracy pipeline lining inner burr removing apparatus according to claim 1 or 5, it is characterized in that: described connector (75) entirety is coniform, on sidewall, be provided with wedge shape connecting hole (751), impedance means (2) mates grafting by wedge shape connecting hole (751) with burr removing device (3) end.
7. a kind of built-in impedor high accuracy pipeline lining inner burr removing apparatus according to claim 1 or 5, is characterized in that: described insulation sleeve (73) is made up of epoxide resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521043842.1U CN205237227U (en) | 2015-12-15 | 2015-12-15 | Burr clearing device in built -in impedor high accuracy pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521043842.1U CN205237227U (en) | 2015-12-15 | 2015-12-15 | Burr clearing device in built -in impedor high accuracy pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205237227U true CN205237227U (en) | 2016-05-18 |
Family
ID=55936306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521043842.1U Withdrawn - After Issue CN205237227U (en) | 2015-12-15 | 2015-12-15 | Burr clearing device in built -in impedor high accuracy pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205237227U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397193A (en) * | 2015-12-15 | 2016-03-16 | 淮安市贝克铝热传输有限公司 | High-accuracy pipeline inside burr removing device internally provided with impedance device |
-
2015
- 2015-12-15 CN CN201521043842.1U patent/CN205237227U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397193A (en) * | 2015-12-15 | 2016-03-16 | 淮安市贝克铝热传输有限公司 | High-accuracy pipeline inside burr removing device internally provided with impedance device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104942510A (en) | Box structure plate welding tool | |
| CN203380648U (en) | Manual tube clamping device for drilling process | |
| CN205237227U (en) | Burr clearing device in built -in impedor high accuracy pipeline | |
| CN202934193U (en) | Device for removing burrs in aluminum alloy high-frequency welding straight-welded pipe | |
| CN105414672B (en) | A kind of ratio-frequency welding adapter lining inner burr removing apparatus | |
| CN105397193A (en) | High-accuracy pipeline inside burr removing device internally provided with impedance device | |
| CN101927449A (en) | Support tube device of balanced type circular tube polishing machine | |
| CN205200859U (en) | Built -in intraductal burr clearing device of impedor high -frequency soldering | |
| CN105414673B (en) | A kind of double roller High-precision high-frequency welded pipe lining inner burr removing apparatus | |
| CN201969996U (en) | Longitudinal submerged-arc welding production line for stainless-steel pipe and carbon steel pipe | |
| CN205166061U (en) | Intraductal burr clearing device of two roller high accuracy high -frequency solderings | |
| CN205166062U (en) | Intraductal burr clearing device of high -frequency soldering | |
| CN105414816A (en) | Burr eliminating device for interior of internal impedor high-frequency welded pipe | |
| CN203541167U (en) | Small-caliber steel pipe straightener for high-frequency longitudinal welded pipe production line | |
| CN202123288U (en) | Hot sawing machine with spray system | |
| CN203678845U (en) | Hot continuous rolling thin-long core rod processed in sectioned mode | |
| CN105880809B (en) | Middle steel pipes with straight upward multi-wire submerged-arc Welding and the bonding pad roll used online | |
| CN202571409U (en) | Guide sleeve of cold centering machine | |
| CN104353928B (en) | A kind of anti-molten drop blocking impedor | |
| CN209007042U (en) | A kind of packaged type large-caliber spiral welded pipe units | |
| CN203778940U (en) | Improved structure of mandril of argon arc welding machine | |
| CN201544207U (en) | Marking-out tool for runner blade with flange | |
| CN205551779U (en) | High frequency longitudinal welded pipe unit | |
| CN2644038Y (en) | Device for descaling and dashing with high pressure water | |
| CN211438831U (en) | Nuclear power plug bush welds uses frock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160518 Effective date of abandoning: 20180213 |