CN204585834U - A kind of braided fiber reinforced composite sheet material hot pressing connection device - Google Patents
A kind of braided fiber reinforced composite sheet material hot pressing connection device Download PDFInfo
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- CN204585834U CN204585834U CN201520109704.2U CN201520109704U CN204585834U CN 204585834 U CN204585834 U CN 204585834U CN 201520109704 U CN201520109704 U CN 201520109704U CN 204585834 U CN204585834 U CN 204585834U
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Abstract
A kind of braided fiber reinforced composite sheet material hot pressing connection device, comprise rivet feed system, rivet feed system and rivet automated installation of system are connected, hot air heating system, plate punching system, rivet automated installation of system, riveting system, servo turntable system is rack-mount, being connected sheet material is arranged in servo turntable system by the air clamper be connected in servo turntable system, along with the rotation of servo turntable system, successively through the heating of hot air heating system to connected portion, plate punching system is to the bundle hole of connected portion, rivet automated installation of system carries out the installation of rivet, riveting system carries out hot pressing riveted joint and forms jointing, the utility model reduces the damage to fiber in braided fiber reinforced composite sheet material connection procedure, realize automated production simultaneously, reduce link cost.
Description
Technical field
The utility model relates to composite board interconnection technique field, particularly a kind of braided fiber reinforced composite sheet material hot pressing connection device.
Background technology
Along with the application of composite is more and more extensive, particularly the application of braided fiber enhancing polymer matrix composites is more and more extensive, connectivity problem between composite and composite becomes an important technical problem, such as: aircraft composite structure has the destruction of more than 70% to be occur in connecting portion, and visible interconnection technique has material impact to composite structure overall performance.Braided fiber strengthens polymer matrix composites and is divided into braided fiber to strengthen thermoplastic composite and braided fiber enhancing same with thermosetting compound material according to the characteristic difference of resin.Braided fiber strengthens thermoplastic composite due to the impact property of its excellence and toughness and is widely used.
For the connection of composite, traditional mechanical connection, owing to will punch to composite material parts, comparatively serious to the damage of braided fiber, greatly reduce the bonding strength of joint; Adopt and glued joint, because bonding agent is to the rigors of working environment, its scope of application is also reduced greatly, adopting Z-Pining to connect is a kind of connected mode less to braided fiber damage.But traditional Z-Pining connection is mainly used in composite laminated plate processing and manufacturing process, the stub of rigidity is directly embedded at the thickness direction of its prepreg or foam layer, be used for improving the performance such as interlaminal toughness, the impact loss limit, post-impact compression of material, the example for the connection between part and part is also little.
The material of usual Z-Pining is metal material, and the joint after connecting so just exists electrochemical corrosion, reduces the bonding strength of joint, and this just requires the new material studying Z-Pining.In addition because traditional Z-Pining is independently stub one by one, be unfavorable for the industrial mass application that composite connects, this will design the structure of new Z-Pining.
Along with braided fiber strengthens the universal of thermoplastic resin based composite material application, also relate to the connection of some composites and metal material, this also proposes new challenge to present connected mode.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide a kind of braided fiber reinforced composite sheet material hot pressing connection device, achieve the multistation of braided fiber compared with Small loss, the connection of continuous-flow type, can be used for industrial mass application.
To achieve the above object, the technical scheme that the utility model is taked is:
A kind of braided fiber reinforced composite sheet material hot pressing connection device, comprise support 7, in the centre of support 7, servo turntable system 6 is installed, the surrounding of support 7 is provided with successively: hot air heating system 1, plate punching system 2, rivet automated installation of system 3, riveting system 5, hot air heating system 1, plate punching system 2, rivet automated installation of system 3, riveting system 5 coordinates to the corresponding station of servo turntable system 6 respectively, rivet feed system 4 and rivet automated installation of system 3 are connected, hot air heating system 1, plate punching system 2, rivet automated installation of system 3, rivet feed system 4, riveting system 5, servo turntable system 6 is connected with control system 8 respectively, be connected sheet material 9 difference clamping on the station of servo turntable system 6.
Described hot air heating system 1 comprises air blast 1-1, and air blast 1-1 air outlet is connected with hot-blast spray nozzle 1-3 by heating fiber tube 1-2, and hot-blast spray nozzle 1-3 is 10-20mm with the distance of the upper surface being connected sheet material 9.
Described plate punching system 2 comprises the first cylinder 2-1, and the first cylinder 2-1 piston rod is connected with jumper bar 2-4, and jumper bar 2-4 is connected with drift 2-5.
Described rivet automated installation of system 3 comprises the first servomotor 3-1, and the first servomotor 3-1 output shaft is connected with pivoted arm 3-3, and the other end of pivoted arm 3-3 is connected with the second cylinder 3-5 stiff end, and the piston rod of the second cylinder 3-5 is connected with pneumatic scroll chuck 3-4.
Described rivet feed system 4 comprises rivet cylinder 4-1, and rivet cylinder 4-1 internal sequence is placed rivet 4-5, and the rivet 4-5 of rivet cylinder 4-1 least significant end contacts with servo linear motor 4-3, and servo linear motor 4-3 is connected with control system 8.
Described riveting system 5 comprises the 3rd cylinder 5-1,3rd cylinder 5-1 piston rod is connected with riveting system connecting rod 5-4, riveting system connecting rod 5-4 is connected with seaming chuck 5-7, first heating rod 5-5 is arranged in the endoporus of seaming chuck 5-7, first temperature sensor 5-6 is arranged in the thermometer hole of seaming chuck 5-7, first heating rod 5-5, the first temperature sensor 5-6 are connected with control system 8, form a closed loop thermal control system.
Described servo turntable system 6 comprises air clamper 6-1, air clamper 6-1 is connected on rotating disk 6-6, rotating disk 6-6 is connected with rotating shaft 6-9 upper end, and rotating shaft 6-9 lower end is connected with the second servomotor 6-8 output shaft, and the second servomotor 6-8 is connected with control system 8.
The described sheet material 9 that is connected comprises upper plate 9-1, and upper plate 9-1 and lower plate 9-2 overlaps, rivet 4-5 be installed in complete punching upper plate 9-1 and lower plate 9-2 on.
Described rivet 4-5 is prepared from by injection molding technology by the first thermoplastic resin matrix 4-5-2 and continuous lod body 4-5-1, and the diameter of the end portion of rivet 4-5 is 5-10mm, and thickness is 1-1.5mm; The diameter 0.6-1.2mm of the needle like section of rivet, length is 2.3 times of connecting plate thickness.
Described upper plate 9-1 and lower plate 9-2 utilizes laminating molding technology to be prepared from by the second thermoplastic resin matrix 9-1-1 and braided fiber reinforcement 9-1-2.
The heating-up temperature of described hot air heating system 1 is arranged according to the fusing point of the reisn base material being connected sheet material 9,10-20 DEG C lower than reisn base material fusing point.
The beneficial effects of the utility model are:
(1) hot pressing jockey of the present utility model, can be inserted into the gap location between the bundle of braided fiber and bundle by the needle like section of the rivet of special construction, in the damage realizing reducing to greatest extent in the process connected fiber.
(2) rivet arrangement of the utility model design is compared with traditional rivet, can make full use of the advantage of fibre reinforced composites designability, increase the bonding strength of rivet to greatest extent.
(3) connection procedure of the present utility model adopts hot pressing, can realize identical with the matrix material of sheet material of the matrix material of rivet is merged, enhance the bonding strength of joint, solve the galvanic corrosion problems between different materials simultaneously compared with traditional metal material rivet.
(4) hot pressing jockey of the present utility model, the automation that can realize braided fiber reinforced composite plate connects, and reduces manufacturing cost.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of the utility model hot air heating system 1.
Fig. 3 is the structural representation of the utility model plate punching system 2.
Fig. 4 is the structural representation of the utility model rivet automated installation of system 3.
Fig. 5 is the structural representation of the utility model rivet feed system 4.
Fig. 6 is the structural representation of the utility model riveting system 5.
Fig. 7-a, Fig. 7-b is the structural representation of the utility model servo turntable system 6.
Fig. 8 is the scheme of installation of rivet interlacement joint, and Fig. 8 (a) is sectional view, and Fig. 8 (b) is top view.
Fig. 9 is the schematic diagram of jointing after riveted joint, and Fig. 9 (a) is sectional view, and Fig. 9 (b) is top view.
Figure 10 is the internal fiber distribution schematic diagram of the utility model rivet.
Figure 11 is the internal fiber distribution schematic diagram that braided fiber strengthens thermoplastic resin based composite material sheet material, and Figure 11 (a) is front view, and Figure 11 (b) is the A-A schematic diagram of Figure 11 (a).
Figure 12 is drift mounting structure schematic diagram in the utility model plate punching system 2, and Figure 12 (a) is front view, and Figure 12 (b) is the B-B schematic diagram of Figure 12 (a).
Figure 13 is the structural representation of the utility model riveting process, and Figure 13 (a) is front view, and Figure 13 (b) is the A-A schematic diagram of Figure 13 (a).
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail.
With reference to Fig. 1, a kind of braided fiber reinforced composite sheet material hot pressing connection device, comprise support 7, in the centre of support 7, servo turntable system 6 is installed, the surrounding of support 7 is provided with successively: hot air heating system 1, plate punching system 2, rivet automated installation of system 3, riveting system 5, hot air heating system 1, plate punching system 2, rivet automated installation of system 3, riveting system 5 coordinate to the corresponding station of servo turntable system 6 respectively, rivet feed system 4 and rivet automated installation of system 3 are connected, for rivet automated installation of system 3 provides rivet; Hot air heating system 1, plate punching system 2, rivet automated installation of system 3, rivet feed system 4, riveting system 5, servo turntable system 6 are connected with control system 8 respectively; Being connected sheet material 9 is arranged on the station of servo turntable system 6, heat being connected sheet material 9 through hot air heating system 1 successively, plate punching system 2 pricks hole to being connected sheet material 9, and rivet automated installation of system 3 carries out the installation of rivet, and riveting system 5 carries out hot pressing riveted joint and forms jointing.
With reference to Fig. 2, described hot air heating system 1 comprises air blast 1-1, air blast 1-1 air outlet is connected with hot-blast spray nozzle 1-3 by heating fiber tube 1-2, hot-blast spray nozzle 1-3 is 10-20mm with the distance of the upper surface being connected sheet material 9, the heating-up temperature of hot air heating system 1 is arranged according to the fusing point of the reisn base material being connected sheet material 9,10-20 DEG C lower than reisn base material fusing point.
With reference to Fig. 3, described plate punching system 2 comprises the first cylinder 2-1, first cylinder 2-1 and the first cylinder connecting plate 2-2 is connected by screw, first cylinder connecting plate 2-2 and the first air cylinder support connecting plate 2-3 is connected by screw, first air cylinder support connecting plate 2-3 is connected by screw on support 7, jumper bar 2-4 upper end is connected by screw thread with the piston rod of the first cylinder 2-1, and drift 2-5 is connected with the lower end of jumper bar 2-4.
With reference to Fig. 4, described rivet automated installation of system 3 comprises the first servomotor 3-1, first servomotor 3-1 output shaft is connected with the first shaft coupling 3-2 input, first shaft coupling 3-2 output is connected with pivoted arm 3-3, the pivoted arm 3-3 other end is connected with the second cylinder 3-5 stiff end, and the piston rod of the second cylinder 3-5 is connected with pneumatic scroll chuck 3-4.
With reference to Fig. 5, described rivet feed system 4 comprises rivet cylinder 4-1, rivet cylinder 4-1 internal sequence is placed rivet 4-5, the rivet 4-5 of rivet cylinder 4-1 least significant end contacts with servo linear motor 4-3, servo linear motor 4-3 is connected with control system 8, the lower surface groove of rivet cylinder 4-1 is placed on the boss of rivet cylinder base 4-2, and rivet cylinder base 4-2 is connected with rivet feed system support 4-4 by screw.
With reference to Fig. 6, described riveting system 5 comprises the 3rd cylinder 5-1, 3rd cylinder 5-1 and the 3rd cylinder connecting plate 5-2 is connected by screw, 3rd cylinder connecting plate 5-2 and the 3rd air cylinder support connecting plate 5-3 is connected by screw, 3rd air cylinder support connecting plate 5-3 is connected by screw on support 7, 3rd cylinder 5-1 piston rod and riveting system connecting rod 5-4 upper end are threaded connection, riveting system connecting rod 5-4 lower end and seaming chuck 5-7 are threaded connection, first heating rod 5-5 is arranged in the endoporus of seaming chuck 5-7, first temperature sensor 5-6 is arranged in the thermometer hole of seaming chuck 5-7, first heating rod 5-5, first temperature sensor 5-6 is connected with control system 8, form a closed loop thermal control system,
With reference to Fig. 7-a and Fig. 7-b, described servo turntable system 6 comprises air clamper 6-1, air clamper 6-1 is connected by screw on rotating disk 6-6, rotating disk 6-6 is connected with rotating shaft 6-9 upper end, rotating shaft 6-9 lower end is connected with the second shaft coupling 6-7, second shaft coupling 6-7 is connected with the second servomotor 6-8 output shaft, second servomotor 6-8 is connected with control system 8, second servomotor 6-8 is bolted on support 7, with clutch shaft bearing 6-10 in the middle part of rotating shaft 6-9, the endoporus of the second bearing 6-11 connects, clutch shaft bearing 6-10, second bearing 6-11 is arranged on support 7, at clutch shaft bearing 6-10, the end that second bearing 6-11 is connected with support 7, end cap is installed, be used for bearing the power of rotating disk 6-6 vertical direction, second temperature sensor 6-3 is arranged in the thermometer hole of push-down head 6-5, second heating rod 6-4 is arranged in the center bottoming hole of push-down head 6-5, the temperature control system of the push-down head 6-5 on each station is connected on temperature controller 6-2 by wire harness 6-12, temperature controller 6-2 is connected by screw on the upper surface of rotating disk 6-6, and push-down head 6-5 is threaded connection on rotating disk 6-6.
With reference to Fig. 8 and Fig. 9, the described sheet material 9 that is connected comprises upper plate 9-1, and upper plate 9-1 and lower plate 9-2 overlaps, rivet 4-5 be installed in complete punching upper plate 9-1 and lower plate 9-2 on.
With reference to Figure 10, described rivet 4-5 is prepared from by injection molding technology by the first thermoplastic resin matrix 4-5-2 and continuous lod body 4-5-1, the axis be oriented to along needle-like of the continuous lod body 4-5-1 of the needle like section of rivet 4-5, the continuous lod body 4-5-1 of the end portion of rivet 4-5 is oriented to radially, and the hot strength of the joint that the rivet 4-5 of design like this obtains after hot pressing connects is higher.
With reference to Figure 11, described upper plate 9-1 and lower plate 9-2 utilizes laminating molding technology to be prepared from by the second thermoplastic resin matrix 9-1-1 and braided fiber reinforcement 9-1-2.
Operation principle of the present utility model is:
With reference to Fig. 1, control system 8 controls servo turntable system 6 intermittent rotary 60 °, realizes being connected sheet material 9 and stop certain hour on each station, complete the connection procedure of whole continuous-flow type.
With reference to Fig. 2, when being connected sheet material 9 and forwarding the station of hot air heating system 1 to, control system 8 controls hot air heating system 1 and heats the joint being connected sheet material 9, and heating-up temperature can be set by control system 8.
With reference to Fig. 3 and Figure 12, when being connected sheet material 9 and forwarding the station of plate punching system 2 to, first cylinder 2-1 drives jumper bar 2-4 under the control of control system 8, drift 2-5 moves downward and punches, when drift 2-5 touches upper plate 9-1, drift 2-5 pushes softening composite board aside under the pressure effect of helical spring 2-6, gap location between braided fiber pricks out connecting hole, and the resin material 9-3 extruded is stored in the die cavity of push-down head 6-5, first cylinder 2-1 drives jumper bar 2-4, drift 2-5 continues to move downward, when the draw point part contact of drift 2-5 is to push-down head 6-5 cavity surface, drift 2-5 stops moving downward, now cylinder drives jumper bar 2-4 to continue to move downward, helical spring 2-6 is compressed, because the movement travel of the first cylinder 2-1 designs, when helical spring 2-6 is compressed a half, first cylinder 2-1 stops moving downward, upwards backhaul is started under the control of control system 8, until initial position, the drill process of sheet material terminates.
With reference to Fig. 4, when being connected sheet material 9 and completing drill process from plate punching system 2, servo turntable system 6 starts to rotate under the control of control system 8, until be connected sheet material 9 to forward rivet Auto-mounting station to, rivet automated installation of system 3 first rotates 180 ° under the effect of the first servomotor 3-1, then under the effect of the second cylinder 3-5, drive pneumatic scroll chuck 3-4 to move downward, pneumatic scroll chuck 3-4 unclamps simultaneously, when arriving the lower desired location of the second cylinder 3-5, pneumatic scroll chuck 3-4 is by ready rivet clamping, then the second cylinder 3-5 counter motion is to upper desired location, then the first servomotor 3-1 rotates 180 ° again, etc. be connected sheet material 9 turn to rivet Auto-mounting station time, under the effect of the second cylinder 3-5, drive pneumatic scroll chuck 3-4 to move downward, until lower desired location, now just rivet is inserted in the hole accomplished fluently, after pneumatic scroll chuck 3-4 unclamps rivet, second cylinder 3-5 counter motion, to upper desired location, completes rivet autoinstall procedure.
With reference to Fig. 5, when the first servomotor 3-1 of rivet automated installation of system 3 starts to rotate 180 ° to get rivet, servo linear motor 4-3 in rivet feed system 4 drives the rivet 4-5 arranged in rivet cylinder 4-1 under the control of control system 8, servo linear motor 4-3 is under the control of control system 8, each distance upwards driving a rivet 4-5 height, the half height of rivet 4-5 is allowed to expose rivet cylinder 4-1, be convenient to the termination of pneumatic scroll chuck 3-4 crimping rivet, after whole cylinder rivet all uses, take out rivet cylinder 4-1, install the rivet cylinder 4-1 having filled rivet more just can.
With reference to Fig. 6, Figure 13, when be connected sheet material 9 forward to riveted joint station after, seaming chuck 5-7 is under the drive of the 3rd cylinder 5-1, move downward lower desired location, the downward compacting of rivet be connected on sheet material 9 will be installed to, to be formed with the needle-like portion termination compacting of rivet 4-5 be connected lower end by being stored in the resin material 9-3 in push-down head 6-5 die cavity in drill process simultaneously, in the compacting process of seaming chuck 5-7 and push-down head 6-5, the temperature of seaming chuck 5-7 controls by control system 8 temperature keeping setting always, the temperature of push-down head 6-5 controls by temperature controller 6-2 the temperature keeping setting always, in the maintenance seaming chuck 5-7 of design temperature and the compacting process of push-down head 6-5, two composite boards are connected together like this.
Claims (6)
1. a braided fiber reinforced composite sheet material hot pressing connection device, comprise support (7), it is characterized in that: in the centre of support (7), servo turntable system (6) is installed, the surrounding of support (7) is provided with successively: hot air heating system (1), plate punching system (2), rivet automated installation of system (3), riveting system (5), hot air heating system (1), plate punching system (2), rivet automated installation of system (3), riveting system (5) coordinates to the corresponding station of servo turntable system (6) respectively, rivet feed system (4) and rivet automated installation of system (3) are connected, hot air heating system (1), plate punching system (2), rivet automated installation of system (3), rivet feed system (4), riveting system (5), servo turntable system (6) is connected with control system (8) respectively, be connected sheet material (9) difference clamping on the station of servo turntable system (6).
2. a kind of braided fiber reinforced composite sheet material hot pressing connection device according to claim 1, it is characterized in that: described hot air heating system (1) comprises air blast (1-1), air blast (1-1) air outlet is connected with hot-blast spray nozzle (1-3) by heating fiber tube (1-2), hot-blast spray nozzle (1-3) is 10-20mm with the distance of the upper surface being connected sheet material (9), heating-up temperature is arranged according to the fusing point of the reisn base material being connected sheet material (9), 10-20 DEG C lower than reisn base material fusing point.
3. a kind of braided fiber reinforced composite sheet material hot pressing connection device according to claim 1, it is characterized in that: described rivet automated installation of system (3) comprises the first servomotor (3-1), first servomotor (3-1) output shaft is connected with pivoted arm (3-3), the other end of pivoted arm (3-3) is connected with the second cylinder (3-5) stiff end, and the piston rod of the second cylinder (3-5) is connected with pneumatic scroll chuck (3-4).
4. a kind of braided fiber reinforced composite sheet material hot pressing connection device according to claim 1, it is characterized in that: described rivet feed system (4) comprises rivet cylinder (4-1), rivet cylinder (4-1) internal sequence is placed rivet (4-5), the rivet (4-5) of rivet cylinder (4-1) least significant end contacts with servo linear motor (4-3), and servo linear motor (4-3) is connected with control system (8).
5. a kind of braided fiber reinforced composite sheet material hot pressing connection device according to claim 1, it is characterized in that: described riveting system (5) comprises the 3rd cylinder (5-1), 3rd cylinder (5-1) piston rod is connected with riveting system connecting rod (5-4), riveting system connecting rod (5-4) is connected with seaming chuck (5-7), first heating rod (5-5) is arranged in the endoporus of seaming chuck (5-7), first temperature sensor (5-6) is arranged in the thermometer hole of seaming chuck (5-7), first heating rod (5-5), first temperature sensor (5-6) is connected with control system (8), form a closed loop thermal control system.
6. a kind of braided fiber reinforced composite sheet material hot pressing connection device according to claim 1, it is characterized in that: described servo turntable system (6) comprises air clamper (6-1), air clamper (6-1) is connected on rotating disk (6-6), rotating disk (6-6) is connected with rotating shaft (6-9) upper end, rotating shaft (6-9) lower end is connected with the second servomotor (6-8) output shaft, and the second servomotor (6-8) is connected with control system (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520109704.2U CN204585834U (en) | 2015-02-14 | 2015-02-14 | A kind of braided fiber reinforced composite sheet material hot pressing connection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520109704.2U CN204585834U (en) | 2015-02-14 | 2015-02-14 | A kind of braided fiber reinforced composite sheet material hot pressing connection device |
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| CN204585834U true CN204585834U (en) | 2015-08-26 |
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| CN201520109704.2U Expired - Fee Related CN204585834U (en) | 2015-02-14 | 2015-02-14 | A kind of braided fiber reinforced composite sheet material hot pressing connection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669604A (en) * | 2015-02-14 | 2015-06-03 | 西安交通大学 | Hot-pressing jointing device for braided fiber reinforced composite plate |
| CN106112287A (en) * | 2016-08-25 | 2016-11-16 | 优尔金属制品(苏州)有限公司 | Numerical control automatic hot air welding machine |
| CN107856320A (en) * | 2017-11-16 | 2018-03-30 | 铭板精密科技(中山)有限公司 | A kind of new-type heat-melting equipment |
| CN107932927A (en) * | 2017-12-26 | 2018-04-20 | 吉林大学 | A kind of thermoplasticity carbon fibre composite plate rushes willow connection device certainly with alloy sheets and willow connects method |
-
2015
- 2015-02-14 CN CN201520109704.2U patent/CN204585834U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669604A (en) * | 2015-02-14 | 2015-06-03 | 西安交通大学 | Hot-pressing jointing device for braided fiber reinforced composite plate |
| CN106112287A (en) * | 2016-08-25 | 2016-11-16 | 优尔金属制品(苏州)有限公司 | Numerical control automatic hot air welding machine |
| CN107856320A (en) * | 2017-11-16 | 2018-03-30 | 铭板精密科技(中山)有限公司 | A kind of new-type heat-melting equipment |
| CN107932927A (en) * | 2017-12-26 | 2018-04-20 | 吉林大学 | A kind of thermoplasticity carbon fibre composite plate rushes willow connection device certainly with alloy sheets and willow connects method |
| CN107932927B (en) * | 2017-12-26 | 2024-04-16 | 吉林大学 | Thermoplastic carbon fiber composite material and alloy self-piercing riveting device and riveting method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20170214 |