CN206578220U - A kind of spinning machine of large diameter steel pipe spigot-and-socket joint - Google Patents
A kind of spinning machine of large diameter steel pipe spigot-and-socket joint Download PDFInfo
- Publication number
- CN206578220U CN206578220U CN201720047880.7U CN201720047880U CN206578220U CN 206578220 U CN206578220 U CN 206578220U CN 201720047880 U CN201720047880 U CN 201720047880U CN 206578220 U CN206578220 U CN 206578220U
- Authority
- CN
- China
- Prior art keywords
- spinning machine
- spinning
- rotary wheel
- steel pipe
- internal rotary
- 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- Withdrawn - After Issue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
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The utility model discloses a kind of spinning machine of large diameter steel pipe spigot-and-socket joint, belong to steel pipe process equipment field, including base and housiung separator, base is provided with guide rail and numerical control spinning machine；CNC Spinning mechanism includes：Movable spinning machine located at the fixation spinning machine of base one end and on guide rail；The other end of base is provided with framework memorial archway；Housiung separator is located at framework memorial archway and the top of CNC Spinning mechanism；Charging and discharging mechanism is additionally provided with guide rail；Charging and discharging mechanism is located between fixed spinning machine and movable spinning machine；Positioning and clamping mechanism is provided between charging and discharging mechanism；CNC Spinning mechanism is provided with auxiliary body；Auxiliary body includes：Full circle mechanism and heating arrangements.The utility model automaticity is high, and method is reliable, hold, the conversion of plug construction form it is efficient and convenient；Machining accuracy and production efficiency are high, and manufacturing cost is low.
Description
Technical field
The utility model is related to a kind of spinning equipment of large diameter steel pipe spigot-and-socket joint, more particularly to a kind of Large-diameter Steel
The spinning equipment of pipe spigot-and-socket joint, takes the lead and plug for the direct mould pressing of pipe end to be various forms of.
Background technology
With developing rapidly for urban pipe network, the specification of large diameter steel pipe is increasing.Bayonet joint is Large-diameter Steel
One of most effective mode of pipe connection.At present, the forming mode of spigot-and-socket joint steel pipe, mainly there is expansion shaped insertion-type, upset shaping
Etc. mode.
Chinese patent, Application No.：00114068.X, disclose a kind of expansion shaped insertion-type spigot-and-socket flexible joint steel pipe and
Its manufacture method, is applied by the two ends tube wall to steel pipe and dilates pressure, brings it about plastic deformation, and expand by the size of mould
It is expanded into type.This forming mode, is present to equipment requirement height, expansion shaped insertion-type power is big, poor dimensional precision, shell limitation are big,
The shortcomings of manufacturing cost is high.
Chinese patent, Application No.：02110816.1, a kind of spigot and socket joint steel pipe and its manufacture method are disclosed, is led to
Cross upset mould of taking the lead and carry out that upset is expanding to be configured to take the lead to heating steel pipe head, plug is then the other end in processing steel pipe
Pipe welds a baffle ring on week.This forming mode, has that the expanding plastic force of upset of taking the lead is big, joint needs welding, and welding becomes
Shape is uncontrollable, and manufacturing process is complicated, the shortcomings of manufacturing cost is high.
Utility model content
The purpose of utility model：In order to overcome the above not enough, the utility model discloses a kind of large diameter steel pipe spigot-and-socket and connect
The spinning machine of head, automaticity is high, and method is reliable, hold, the conversion of plug construction form it is efficient and convenient；Machining accuracy and production
Efficiency high, manufacturing cost is low.
Technical scheme：In order to realize the above object the utility model discloses a kind of large diameter steel pipe spigot-and-socket joint
Spinning machine, including base and housiung separator, the base are provided with guide rail and numerical control spinning machine；The CNC Spinning mechanism
Including：Movable spinning machine located at the fixation spinning machine of base one end and on guide rail；The other end of the base is set
Organic frame memorial archway；The housiung separator is located at framework memorial archway and the top of CNC Spinning mechanism；Above and below being additionally provided with the guide rail
Expect mechanism；The charging and discharging mechanism is located between fixed spinning machine and movable spinning machine；Set between the charging and discharging mechanism
There is positioning and clamping mechanism；The CNC Spinning mechanism is provided with auxiliary body；The auxiliary body includes：Full circle mechanism and heating
Mechanism；The fixed spinning machine and movable spinning machine are symmetrical in opposite directions.
Further, a kind of spinning machine of large diameter steel pipe spigot-and-socket joint described in the utility model, the numerical control
Spinning machine includes：Spinning pedestal, and the rotation traffic cycle on spinning pedestal, and the outer spinning roller on rotation traffic cycle
Mechanism, and the internal rotary wheel mechanism located at rotation traffic cycle center；The internal rotary wheel mechanism is fixed at internal rotary wheel mechanism axial direction
On sliding block；Internal rotary wheel mechanism axial slider is connected with the axial digital oil cylinder of the internal rotary wheel being fixed on spinning pedestal；It is described
Internal rotary wheel axial direction digital oil cylinder is provided with the axial digital oil cylinder servomotor with its integrally connected；The internal rotary wheel mechanism axial direction
Internal rotary wheel radial number oil cylinder is provided with inside sliding block；The internal rotary wheel radial number oil cylinder and the radial direction being fixed on spinning pedestal
Digital oil cylinder servomotor is connected.
Further, a kind of spinning machine of large diameter steel pipe spigot-and-socket joint described in the utility model, the outward turning
Wheel mechanism is included in 180 ° of outer spinning rollers of symmetrical two group and the outer spinning roller oil cylinder being connected with outer spinning roller.
Further, a kind of spinning machine of large diameter steel pipe spigot-and-socket joint described in the utility model, the inward turning
Wheel mechanism is included in 180 ° of symmetrical two group internal rotary wheels and the internal rotary wheel sliding block being connected with internal rotary wheel；The internal rotary wheel sliding block
It is relative to connect to form " V " type socket；The piston rod end of the internal rotary wheel radial number oil cylinder matches with " V " type socket；It is described
Returning spring is provided between internal rotary wheel sliding block.
Further, the spinning machine of a kind of large diameter steel pipe spigot-and-socket joint described in the utility model, it is described above and below
Material mechanism is constituted by setting side by side with two material supporting racks on guide rail；The material supporting rack is provided with transmission mechanism；The transmission mechanism
It is provided with equally distributed V-type locating fork.
Further, a kind of spinning machine of large diameter steel pipe spigot-and-socket joint described in the utility model, the retainer
Lifting-positioning device is provided with inside frame.
Further, a kind of spinning machine of large diameter steel pipe spigot-and-socket joint described in the utility model, the positioning
Clamping mechanism is made up of one group of symmetrical synchronous paw.
Further, a kind of spinning machine of large diameter steel pipe spigot-and-socket joint described in the utility model, the full circle
Mechanism is made up of one group of circumference to equally distributed oil cylinder briquetting.
Above-mentioned technical proposal can be seen that the utility model and have the advantages that：
1st, the utility model automaticity is high, and method is reliable, and the conversion of socket joint header structure form is efficient and convenient；Machining accuracy
High with production efficiency, manufacturing cost is low；
2nd, spinning machine described in the utility model is controlled using digital control system, and automaticity is high, machining accuracy it is high into
Product have very high uniformity, and production efficiency is high, are adapted to produce in enormous quantities.
Brief description of the drawings
Fig. 1 illustrates for a kind of stereochemical structure of spinning machine of large diameter steel pipe spigot-and-socket joint described in the utility model
Figure；
Fig. 2 is charging and discharging mechanism described in the utility model and positioning and clamping mechanism structure schematic diagram；
Fig. 3 is the side view of CNC Spinning mechanism described in the utility model；
Fig. 4 is the sectional view of CNC Spinning mechanism described in the utility model；
In figure：
1- bases；
2- housiung separators；
3- CNC Spinnings mechanism, 30- spinning pedestal, 31- rotations traffic cycle, the outer rotary wheel mechanisms of 32-, 33- internal rotary wheels mechanism,
The axial digital oil cylinder of 34- internal rotary wheels mechanism axial slider, 35- internal rotary wheels, the axial digital oil cylinder servomotors of 36-, 37- internal rotary wheels
The outer spinning roller oil cylinder of the outer spinning roller of radial number oil cylinder, 38- radial number oil cylinders servomotor, 321-, 322-, 331- internal rotary wheels,
332- internal rotary wheels sliding block, 333- returning springs；
4- guide rails；
5- framework memorial archways；
6- charging and discharging mechanisms, 61- material supporting racks, 62- transmission mechanisms, 63-V type locating forks；
The synchronous paw of 7- positioning and clampings mechanism, 71-；
8- full circle mechanism, 81- oil cylinder briquettings；
9- heating arrangements.
Embodiment
Below in conjunction with the accompanying drawings, the utility model embodiment is described in detail.
Embodiment：
A kind of spinning machine of large diameter steel pipe spigot-and-socket joint described in the utility model, as shown in figure 1, including：Bottom
Seat 1 and housiung separator 2, the base 1 are provided with guide rail 4 and numerical control spinning machine 3；The CNC Spinning mechanism 3 includes：It is located at
The fixation spinning machine of the one end of base 1 and the movable spinning machine on guide rail 4；The other end of the base 1 is provided with frame
Memorial archway 5；The housiung separator 2 is located at framework memorial archway 5 and the top of CNC Spinning mechanism 3；Loading and unloading are additionally provided with the guide rail 4
Mechanism 6；The charging and discharging mechanism 6 is located between fixed spinning machine and movable spinning machine；Set between the charging and discharging mechanism 6
There is positioning and clamping mechanism 7；The CNC Spinning mechanism 3 is provided with auxiliary body；The auxiliary body includes：The He of full circle mechanism 8
Heating arrangements 9；The fixed spinning machine and movable spinning machine are symmetrical in opposite directions；As shown in Figure 3, Figure 4, cnc spinning machine
Structure 3 includes：Spinning pedestal 30, and the rotation traffic cycle 31 on spinning pedestal 30, and it is outer on rotation traffic cycle 31
Rotary wheel mechanism 32, and the internal rotary wheel mechanism 33 located at rotation traffic cycle 31 center；In the internal rotary wheel mechanism 33 is fixed at
On rotary wheel mechanism axial slider 34；Internal rotary wheel mechanism axial slider 34 and the internal rotary wheel axial direction being fixed on spinning pedestal 30
Digital oil cylinder 35 is connected；The axial digital oil cylinder 35 of the internal rotary wheel is provided with the axial digital oil cylinder servo electricity with its integrally connected
Machine 36；The inside of internal rotary wheel mechanism axial slider 34 is provided with internal rotary wheel radial number oil cylinder 37；The internal rotary wheel radial number
Oil cylinder 37 is connected with the radial number oil cylinder servomotor 38 being fixed on spinning pedestal 30.Rotation traffic cycle 31 drives when rotating
Inside and outside spinning roller makees coaxial rotating along steel pipe blank circumference, while digital control system issues instructions to inside and outside spinning roller executing agency, spinning roller
Executing agency carries out rotary press modelling according to the prefabricated spinning program of digital control system to blank pipe.
Wherein, outer rotary wheel mechanism 32 is including being in the outer spinning roller 321 of 180 ° of symmetrical two group and being connected with outer spinning roller 321
Outer spinning roller oil cylinder 322, outer spinning roller oil cylinder 322 can realize the feeding of external spinning roller 321 in the radial direction；Internal rotary wheel mechanism 33 includes
In 180 ° of symmetrical two group internal rotary wheels 331 and the internal rotary wheel sliding block 332 being connected with internal rotary wheel 331；The internal rotary wheel sliding block
332 connect to form " V " type socket relatively；The piston rod end of the internal rotary wheel radial number oil cylinder 37 matches with " V " type socket；
Returning spring 333 is provided between the internal rotary wheel sliding block 332.
In addition, a kind of spinning machine of large diameter steel pipe spigot-and-socket joint described in the utility model, as shown in Fig. 2 on
Cutting agency 6 is constituted by setting side by side with two material supporting racks 61 on guide rail 4；The material supporting rack 61 is provided with transmission mechanism 62；Institute
Transmission mechanism 62 is stated provided with equally distributed V-type locating fork 63；The inside of material supporting rack 61 is provided with lifting-positioning device, convenient by steel
Pipe is promoted to the height needed for spinning；The positioning and clamping mechanism 7 is made up of one group of symmetrical synchronous paw 71, by same
Step paw 71 embraces sense organ surrounding, it is to avoid relatively rotated during spinning.The full circle mechanism 8 from one group of circumference to
Equally distributed oil cylinder briquetting 81 is constituted, it is preferable that oil cylinder briquetting 81 in the presence of hydraulic pressure, makes steel pipe provided with 8-12
Termination is bordering on circular.Wherein, transmission mechanism 62 includes extraordinary carrier chain, transfer motion power source, delivery track and control system etc..
Thus mechanism is transported to required position after pipe blank feeding and Pipe forming.
Wherein, blank pipe end can be preheated within 1000 DEG C by heating arrangements 9 described in the utility model, and
Interior to be provided with constant temperature heat preservation mechanism, heat preservation mechanism can be prevented effectively from the loss of steel pipe slab temperature, it is ensured that the temperature required for pipe processing
Spend scope.
A kind of spin-on process of the spinning machine of large diameter steel pipe spigot-and-socket joint described in other the present embodiment, including with
Under several steps：
1. feeding：
Blank steel pipe is pushed into the side of charging and discharging mechanism 6, rolled on blank steel pipe material supporting rack 61, and positioned by V-type
Pitch 63 spacing, then blank steel pipe is sent at equipment axis by transmission mechanism 62, feeding is realized；
2. position, fix：
By the lifting-positioning device in material supporting rack 61 by blank steel pipe be increased to processing needed for height, then by same
Step paw 71 realizes that circumference embraces pressure；
3. full circle, heating：
One end of blank steel pipe is moved in fixed spinning machine along guide rail 4 by displacement actuator, it is then movable
Spinning machine is moved to the other end of blank steel pipe by displacement actuator；Then by full circle mechanism 8 to blank steel pipe
Ovality carries out full circle, and is heated by heating arrangements 9；
4. hold, plug spinning：
Rotate traffic cycle 31 drives backspin to turn in motor, and then drives outer rotary wheel mechanism 32 and internal rotary wheel mechanism 33 to realize circle
Zhou Xuanzhuan, cuts blank steel pipe；Simultaneously in axial direction, radial direction upper feeding, and then by one end spinning of blank steel pipe
Into taking the lead, the other end is spun into plug；
5. blanking：
Hold, after plug spinning terminates, movable spinning machine is withdrawn in the presence of displacement actuator from shaping steel tube end,
Charging and discharging mechanism 6 and positioning and clamping mechanism 7 are withdrawn in the presence of displacement actuator from fixed spinning machine simultaneously, retainer
Lifting-positioning device in frame 61 drops to original position, then the opposite side of shaping steel tube slave unit under the drive of transmission mechanism 62
Blanking；
6. be repeated in step 1.~5., complete the spinning of remaining blank steel pipe.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvement can also be made, these improvement also should be regarded as
Protection domain of the present utility model.
Claims (8)
1. a kind of spinning machine of large diameter steel pipe spigot-and-socket joint, it is characterised in that：Including：Base（1）And housiung separator
（2）, the base（1）It is provided with guide rail（4）With numerical control spinning machine（3）；The CNC Spinning mechanism（3）Including：The bottom of located at
Seat（1）The fixation spinning machine of one end and located at guide rail（4）On movable spinning machine；The base（1）The other end be provided with
Framework memorial archway（5）；The housiung separator（2）Located at framework memorial archway（5）And CNC Spinning mechanism（3）Top；The guide rail（4）
On be additionally provided with charging and discharging mechanism（6）；The charging and discharging mechanism（6）Between fixed spinning machine and movable spinning machine；Institute
State charging and discharging mechanism（6）Between be provided with positioning and clamping mechanism（7）；The CNC Spinning mechanism（3）It is provided with auxiliary body；It is described
Auxiliary body includes：Full circle mechanism（8）And heating arrangements（9）；The fixed spinning machine and movable spinning machine are symmetrical in opposite directions
Distribution.
2. a kind of spinning machine of large diameter steel pipe spigot-and-socket joint according to claim 1, it is characterised in that：The number
Control spinning machine（3）Including：Spinning pedestal（30）, and located at spinning pedestal（30）On rotation traffic cycle（31）, and located at rotation
Turn traffic cycle（31）On outer rotary wheel mechanism（32）, and located at rotation traffic cycle（31）The internal rotary wheel mechanism of center（33）；Institute
State internal rotary wheel mechanism（33）It is fixed at internal rotary wheel mechanism axial slider（34）On；Internal rotary wheel mechanism axial slider（34）With
It is fixed on spinning pedestal（30）On the axial digital oil cylinder of internal rotary wheel（35）It is connected；The axial digital oil cylinder of the internal rotary wheel（35）On
Provided with the axial digital oil cylinder servomotor with its integrally connected（36）；Internal rotary wheel mechanism axial slider（34）Inside is provided with
Internal rotary wheel radial number oil cylinder（37）；The internal rotary wheel radial number oil cylinder（37）With being fixed on spinning pedestal（30）On radial direction
Digital oil cylinder servomotor（38）It is connected.
3. a kind of spinning machine of large diameter steel pipe spigot-and-socket joint according to claim 2, it is characterised in that：It is described outer
Rotary wheel mechanism（32）Including in 180 ° of outer spinning rollers of symmetrical two group（321）And with outer spinning roller（321）Connected outer spinning roller oil
Cylinder（322）.
4. a kind of spinning machine of large diameter steel pipe spigot-and-socket joint according to claim 2, it is characterised in that：In described
Rotary wheel mechanism（33）Including in 180 ° of symmetrical two group internal rotary wheels（331）And and internal rotary wheel（331）Connected inward turning skidding
Block（332）；The internal rotary wheel sliding block（332）It is relative to connect to form " V " type socket；The internal rotary wheel radial number oil cylinder（37）Work
Stopper rod end matches with " V " type socket；The internal rotary wheel sliding block（332）Between be provided with returning spring（333）.
5. a kind of spinning machine of large diameter steel pipe spigot-and-socket joint according to claim 1, it is characterised in that：On described
Cutting agency（6）By setting side by side and guide rail（4）On two material supporting racks（61）Constitute；The material supporting rack（61）It is provided with driver
Structure（62）；The transmission mechanism（62）It is provided with equally distributed V-type locating fork（63）.
6. a kind of spinning machine of large diameter steel pipe spigot-and-socket joint according to claim 5, it is characterised in that：The support
Bin（61）Inside is provided with lifting-positioning device.
7. a kind of spinning machine of large diameter steel pipe spigot-and-socket joint according to claim 1, it is characterised in that：It is described fixed
Position clamping mechanism（7）By one group of symmetrical synchronous paw（71）Composition.
8. a kind of spinning machine of large diameter steel pipe spigot-and-socket joint according to claim 1, it is characterised in that：It is described whole
Circular knitting machine structure（8）From one group of circumference to equally distributed oil cylinder briquetting（81）Constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720047880.7U CN206578220U (en) | 2017-01-16 | 2017-01-16 | A kind of spinning machine of large diameter steel pipe spigot-and-socket joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720047880.7U CN206578220U (en) | 2017-01-16 | 2017-01-16 | A kind of spinning machine of large diameter steel pipe spigot-and-socket joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206578220U true CN206578220U (en) | 2017-10-24 |
Family
ID=60110669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720047880.7U Withdrawn - After Issue CN206578220U (en) | 2017-01-16 | 2017-01-16 | A kind of spinning machine of large diameter steel pipe spigot-and-socket joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206578220U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694721A (en) * | 2017-01-16 | 2017-05-24 | 上海佳方钢管集团太仓有限公司 | Spinning equipment for bell-spigot joint of large-diameter steel pipe and spinning method of spinning equipment |
| CN107971367A (en) * | 2017-12-14 | 2018-05-01 | 天津腾飞钢管有限公司 | A kind of novel seamless steel tube straightener |
| CN116000220A (en) * | 2023-03-23 | 2023-04-25 | 邢台众力汽车配套有限公司 | Spindle nose lid spinning screw equipment |
-
2017
- 2017-01-16 CN CN201720047880.7U patent/CN206578220U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694721A (en) * | 2017-01-16 | 2017-05-24 | 上海佳方钢管集团太仓有限公司 | Spinning equipment for bell-spigot joint of large-diameter steel pipe and spinning method of spinning equipment |
| CN106694721B (en) * | 2017-01-16 | 2018-09-25 | 上海佳方钢管集团太仓有限公司 | A kind of spinning machine and its spin-on process of large diameter steel pipe spigot-and-socket joint |
| CN107971367A (en) * | 2017-12-14 | 2018-05-01 | 天津腾飞钢管有限公司 | A kind of novel seamless steel tube straightener |
| CN107971367B (en) * | 2017-12-14 | 2023-10-10 | 天津腾飞钢管有限公司 | Seamless steel tube straightening machine |
| CN116000220A (en) * | 2023-03-23 | 2023-04-25 | 邢台众力汽车配套有限公司 | Spindle nose lid spinning screw equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110548797B (en) | Coreless spinning processing method for large-proportion multi-time reducing hollow shaft | |
| CN206578220U (en) | A kind of spinning machine of large diameter steel pipe spigot-and-socket joint | |
| CN105537345B (en) | Bellows internal rolling manufacturing process | |
| CN203972513U (en) | A kind of threaded steel pipe automatic coiled pipe shaping machine set | |
| CN101804432B (en) | Rolling ring machine with internally supported rim | |
| CN106216538A (en) | A kind of major diameter ring mechanical expansion equipment | |
| CN106694721B (en) | A kind of spinning machine and its spin-on process of large diameter steel pipe spigot-and-socket joint | |
| CN201089085Y (en) | Multiple circle-curling spot welder | |
| CN210523513U (en) | Coreless vertical spinning system for large-proportion multi-time reducing hollow shaft | |
| CN102172658A (en) | Semitrailer integral axle tube extrusion moulding equipment and method | |
| CN107116168A (en) | A kind of tubing string swager for processing inner spline gear | |
| CN104028599A (en) | Corrugated pipe spinning forming method | |
| CN104669577A (en) | Special-shaped wall pipe holder, socket forming mould and bell and spigot manufacturing equipment | |
| CN1951844A (en) | Full-automatic solar heat-collecting tube sealing machine | |
| CN110181190B (en) | Barrel inner support ring and barrel assembly complete system device and production process thereof | |
| CN208178283U (en) | Large-diameter steel pipe port is flared linkage mechanism, equipment and production group zygonema | |
| CN202015748U (en) | Overall axle tube extrusion forming equipment for semitrailer | |
| CN210188857U (en) | Barrel internal stay ring and barrel group are to integrated system device | |
| CN107812842A (en) | Large-diameter steel pipe port enlarging link gear, equipment and production combination line | |
| CN206415436U (en) | flat spiral coil pipe spinning machine | |
| CN201371192Y (en) | Rotary processing device of plate metal part with non-circular section | |
| CN206794634U (en) | A kind of tubing string swager for processing inner spline gear | |
| CN113263095B (en) | Multi-pass coupled wheel spinning machine for large thin-wall rectangular corrugated pipe | |
| CN206104599U (en) | Be used for heavy -calibre seamless steel pipe tip sizing device | |
| CN104669561B (en) | Ridge moulding/demoulding device and hose shoulder-injection machine thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171024 Effective date of abandoning: 20180925 |