CN110217590B - Lens clamping device - Google Patents
Lens clamping device Download PDFInfo
- Publication number
- CN110217590B CN110217590B CN201910581973.1A CN201910581973A CN110217590B CN 110217590 B CN110217590 B CN 110217590B CN 201910581973 A CN201910581973 A CN 201910581973A CN 110217590 B CN110217590 B CN 110217590B
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- Prior art keywords
- clamping
- driving
- clamping arm
- jaw assembly
- driving piece
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- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 10
- 238000001746 injection moulding Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/90—Devices for picking-up and depositing articles or materials
- B65G47/91—Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers
- B65G47/915—Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers provided with drive systems with rotary movements only
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Eyeglasses (AREA)
Abstract
The invention relates to a lens clamping device which comprises a mounting seat, a first clamping jaw assembly, a second clamping jaw assembly, a third clamping jaw assembly, a first connecting rod and a second connecting rod, wherein each clamping jaw assembly comprises a mounting frame, a first clamping arm, a second clamping arm and a sucker, the first clamping arm, the second clamping arm and the sucker are oppositely arranged, the mounting seat comprises a base, a first support and a second support, the mounting frame of the second clamping jaw assembly is hinged on the first support through a first transmission rod, the mounting frame of the third clamping jaw assembly is hinged on the second support through the first transmission rod, one end of the first connecting rod is a first driving end, the other end of the first connecting rod is hinged with the end of the first transmission rod, one end of the second connecting rod is a second driving end, the other end of the second connecting rod is hinged with the end of the second transmission rod, and a fourth driving part for driving the first driving end and the second driving end to move is further arranged on the base. By adopting the technical scheme, the invention provides the lens clamping device, which can clamp a plurality of lenses to be placed on the hanging frame at the same time, and has high working efficiency.
Description
Technical Field
The invention relates to a lens clamping device.
Background
As shown in fig. 1, 2 and 3, in the conventional lens injection molding machine, a plurality of lenses 1' can be simultaneously injection molded, the injection molded lenses 1' are round and surround to form a lens group, the front side wall 111' and the rear side wall 112' of each lens are all plane, the left side wall 113' and the right side wall 114' are all cambered surfaces, the front side wall 111' of each lens is formed with a supporting leg 11', a through hole 12' is formed on the supporting leg 11', the supporting legs 11' of each lens 1' are also connected with a runner molding 13' formed after injection molding, the runner molding 13' is formed in a runner on a mold of the injection molding machine after injection molding, each runner molding 13' is intersected at a round center position, a supporting body 14' is also formed at an intersection position, the supporting body 14' can facilitate taking out the lenses from the injection molding machine, after taking out, the lens group needs to be placed in the round mold base 2', so that only supporting legs are left on each lens, then each cut lens is taken out through a clamping device, the supporting leg is placed on the lens 2' by a mechanical arm control taking device, and then the lens is placed on the mold to a plurality of rows of supporting legs for clamping and processing. At present, a clamping device for clamping lenses is too simple in structure, and only one lens can be clamped simultaneously and placed on a hanging frame, so that the working efficiency is low.
Disclosure of Invention
The purpose of the invention is that: in order to overcome the defects of the prior art, the invention provides a lens clamping device which can clamp a plurality of lenses to be placed on a hanging frame at the same time, and has high working efficiency.
The technical scheme of the invention is as follows: a lens clamping device, characterized in that: the clamping jaw comprises a mounting seat, a first clamping jaw assembly, a second clamping jaw assembly, a third clamping jaw assembly, a first connecting rod and a second connecting rod, wherein each clamping jaw assembly comprises a mounting frame, a first clamping arm, a second clamping arm and a sucker, which are oppositely arranged, a first driving piece for driving the first clamping arm and the second clamping arm to clamp or loosen and a second driving piece for driving the sucker to stretch out and draw back along the vertical direction are arranged on the mounting frame, and the first clamping arm and the second clamping arm are respectively arranged on two sides of the sucker; the mounting seat comprises a base, a first support and a second support are obliquely arranged on the left side and the right side of the base respectively, a first clamping jaw assembly is located on the base, a third driving piece used for driving the first clamping jaw assembly to stretch out and draw back along the front-back direction is arranged on the base, a first transmission rod is connected to a mounting frame of the second clamping jaw assembly, the middle of the first transmission rod is hinged to the first support, a second transmission rod is connected to the mounting frame of the third clamping jaw assembly, the middle of the second transmission rod is hinged to the second support, one end of the first connection rod is a first driving end, the other end of the first connection rod is hinged to the end of the first transmission rod, one end of the second connection rod is a second driving end, and the other end of the second connection rod is hinged to the end of the second transmission rod, and a fourth driving piece used for driving the first driving end and the second driving end to move oppositely or reversely is further arranged on the base.
By adopting the technical scheme, during operation, the second driving piece in each clamping jaw assembly controls the sucking disc to be adsorbed on the surface of the lens, the first clamping arm and the second clamping arm are controlled by the first driving piece to clamp the two side edges of the lens respectively, at the moment, the three clamping jaw assemblies adsorb the three lenses simultaneously, the first driving end and the second driving end are driven by the fourth driving piece to move in opposite directions, the first connecting rod and the second connecting rod respectively pull the second clamping jaw assembly and the third clamping jaw assembly to rotate, the third driving piece stretches out the first clamping jaw assembly forwards to enable the three lenses to be aligned, finally, the three lenses can be placed on the hanging frame simultaneously through the external mechanical arm, and after one-time clamping is completed, the driving pieces return to the initial state to perform the second clamping operation. Therefore, the lens clamping device with the structure can clamp a plurality of lenses to be placed on the hanging frame at the same time, and has high working efficiency.
The invention is further provided with: the second clamping jaw assembly and the third clamping jaw assembly are symmetrically arranged on two sides of the base, the two supports, the two connecting rods and the two transmission rods are symmetrically arranged on two sides of the base, and the first clamping jaw assembly is arranged on a central shaft of the base.
By adopting the further arrangement, the device is convenient to install and stable in movement, and the three clamping jaw assemblies can adsorb three adjacent lenses.
Still further, the present invention provides: the first clamping arms in the clamping jaw assemblies are arranged in tandem and obliquely, the second clamping arms are also arranged in tandem and obliquely corresponding to the first clamping arms, the front ends of the first clamping arms positioned at the front sides are inclined towards the second clamping arms, and the rear ends of the first clamping arms positioned at the rear sides are inclined towards the second clamping arms; the front end of the second clamping arm positioned at the front side is inclined towards the direction of the first clamping arm, and the rear end of the second clamping arm positioned at the rear side is inclined towards the direction of the first clamping arm.
By adopting the further arrangement, as the two side edges of the lens are arc-shaped, the first clamping arm and the second clamping arm are obliquely arranged, so that the lens can be well clamped along the side edge of the lens, and the clamping effect is better and more stable.
Still further, the present invention is provided with: a first clamping groove is formed in the first clamping arm along the inclined direction of the first clamping arm, and the first clamping groove is positioned at one side of the first clamping arm facing the second clamping arm; the second clamping arm is provided with a second clamping groove along the inclined direction of the second clamping arm, and the second clamping groove is positioned on one side of the second clamping arm facing the first clamping arm.
Adopt above-mentioned still further setting, the side that sets up first clamping groove, second clamping groove can make the lens is located clamping groove, and stability is better.
Still further, the present invention is provided with: the front side of first driving piece be provided with the support frame, be equipped with backup pad and deflector about the support frame, the second driving piece sets up in the backup pad, is equipped with the guide holder on the deflector, the sucking disc upper end is connected with the guide bar, the guide bar wears to establish in the guide holder and sliding fit, the guide bar upper end is connected with second driving piece output.
By adopting the further arrangement, the guide rod is matched with the guide seat, so that the sucker is stable when extending and retracting.
Still further, the present invention is provided with: the support frame is provided with a long groove along the vertical direction, the first driving piece is provided with a positioning hole, and the long groove and the positioning hole are internally penetrated with a positioning piece.
By adopting the above arrangement, the height of the support frame can be adjusted along the direction of the long groove, so that the position of the sucker is changed, and the requirement of absorbing lenses under different working conditions can be met.
Still further, the present invention is provided with: the guide rod is internally provided with an air hole, and an external air pipe communicated with the air hole is connected to the guide rod.
By adopting the above further arrangement and adopting the air suction type suction cup, the suction cup can be automatically controlled to adsorb or release the lens, the operation is convenient, and the adsorption is stable.
Still further, the present invention is provided with: the first driving piece and the fourth driving piece adopt pneumatic clamping fingers, and the second driving piece and the third driving piece adopt telescopic cylinders; the first driving end and the second driving end are respectively hinged with two output ends of the fourth driving piece, and the first clamping arm and the second clamping arm are respectively and integrally arranged or fixedly connected with the two output ends of the first driving piece.
The device is further arranged, and is simple in structure and convenient to install.
Drawings
FIG. 1 is a block diagram of a circular lens set;
FIG. 2 is a diagram of a lens structure;
FIG. 3 is a diagram of a hanger structure;
FIG. 4 is a front side block diagram of an embodiment of the present invention;
FIG. 5 is a rear block diagram of an embodiment of the present invention;
FIG. 6 is a block diagram of a jaw assembly for lens alignment in accordance with an embodiment of the present invention;
FIG. 7 is a diagram illustrating the construction of a connecting rod installation in accordance with an embodiment of the present invention;
FIG. 8 is a block diagram of a third jaw assembly according to an embodiment of the invention;
FIG. 9 is a diagram showing the construction of the lower end of the third jaw assembly according to the embodiment of the present invention;
fig. 10 is a block diagram of a mounting base according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1-10, a lens clamping device comprises a mounting seat 1, a first clamping jaw assembly 2A, a second clamping jaw assembly 2B, a third clamping jaw assembly 2C, a first connecting rod 3A and a second connecting rod 3B, wherein each clamping jaw assembly comprises a mounting frame 21, a first clamping arm 22, a second clamping arm 23 and a sucker 24 which are oppositely arranged, a first driving piece 25 for driving the clamping arms 22 and 23 to clamp or loosen and a second driving piece 27 for driving the sucker 24 to stretch along the vertical direction are arranged on the mounting frame 21, and the first clamping arm 22 and the second clamping arm 23 are respectively arranged on two sides of the sucker 24; the mounting seat 1 comprises a base 11, a mounting sheet 10 is arranged on the base 11, a first support 12 and a second support 13 are obliquely arranged on the left side and the right side of the base 11 respectively, a second clamping jaw assembly 2B and a third clamping jaw assembly 2C are symmetrically arranged on the two sides of the base 11, a first clamping jaw assembly 2A is positioned on a central shaft of the base 11, a third driving piece 4 for driving the first clamping jaw assembly 2A to stretch in the front-back direction is arranged on the base 11, a first transmission rod 5A is connected on a mounting frame 21 of the second clamping jaw assembly 2B, the middle part of the first transmission rod 5A is hinged on the first support 12 through a hinge shaft 7A, a second transmission rod 5B is connected on a mounting frame 21 of the third clamping jaw assembly 2C, the middle part of the second transmission rod 5B is hinged on the second support 13 through the hinge shaft 7B, one end of the first connection rod 3A is a first driving end, the other end of the first connection rod is hinged with the end of the first transmission rod 5A through the hinge shaft 7C, one end of the second connecting rod 3B is a second driving end, the other end of the second connecting rod is hinged with the end part of the second transmission rod 5B through a hinge shaft 7D, a fourth driving part 6 for driving the first driving end and the second driving end to move oppositely or reversely is further arranged on the base 11, two supports, two connecting rods and two transmission rods are symmetrically arranged on two sides of the base 11, wherein the first driving part 25 and the fourth driving part 6 are pneumatic clamping fingers, the second driving part 27 and the third driving part 4 are telescopic cylinders, of course, each driving part can also be realized by an electric cylinder, a motor and the like, the first driving end and the second driving end are respectively hinged with two output ends of the fourth driving part 6 through a hinge shaft 7E, the first clamping arm 22 and the second clamping arm 23 are respectively integrally arranged or fixedly connected with two output ends of the first driving part 25, and in the first process, three suction cups 24 are positioned correspondingly above three adjacent lenses.
In the embodiment of the present invention, the first clamping arms 22 in each clamping jaw assembly are arranged in tandem and in an inclined manner, the second clamping arms 23 are also arranged in tandem and in an inclined manner corresponding to the first clamping arms 22, the front ends 2211 of the first clamping arms 221 positioned at the front side are inclined towards the second clamping arms 23, and the rear ends 2221 of the first clamping arms 222 positioned at the rear side are inclined towards the second clamping arms 23; the front end 2311 of the second clamping arm 231 positioned at the front side is inclined toward the first clamping arm 22, and the rear end 2321 of the second clamping arm 232 positioned at the rear side is inclined toward the first clamping arm 22; the first clamping arm 22 is provided with a first clamping groove 220 along the inclined direction, and the first clamping groove 220 is positioned on one side of the first clamping arm 22 facing the second clamping arm 23; the second clamping arm 23 is provided with a second clamping groove 230 along the inclined direction, and the second clamping groove 230 is positioned on the side of the second clamping arm 23 facing the first clamping arm 22. Because both sides limit of lens is convex, this kind of first clamp material arm 22 and second clamp material arm 23 slope setting mode can press from both sides tight lens along the side of lens well, and it is better to press from both sides tight effect, and is more stable, and the side that sets up first clamp silo, second clamp silo can make the lens is located the clamp silo, and stability is better.
In the embodiment of the invention, the front side of the first driving member 25 is provided with a supporting frame 26, the supporting frame 26 is provided with a supporting plate 261 and a guide plate 262 from top to bottom, the second driving member 27 is arranged on the supporting plate 261, the guide plate 262 is provided with a guide seat 263, the upper end of the suction cup 24 is connected with a guide rod 241, the guide rod 241 is arranged in the guide seat 263 in a penetrating manner and is in sliding fit, the upper end of the guide rod 241 is connected with the output end of the second driving member 27, the supporting frame 26 is provided with a long groove 260 along the vertical direction, the first driving member 25 is provided with a positioning hole 250, the long groove 260 and the positioning hole 250 are internally provided with positioning members in a penetrating manner, and the positioning members can be bolts, bolts and the like. Therefore, the height of the support frame can be adjusted along the direction of the long groove, so that the position of the sucker 24 is changed, and the requirement of lens adsorption under different working conditions can be met.
Wherein, be equipped with the gas pocket in the guide bar 241, be connected with on the guide bar 241 with the external trachea 242 that the gas pocket switched on, adopt the air suction type sucking disc 24, can the automatic control sucking disc 24 adsorb the lens or loosen the lens, convenient operation adsorbs stably.
During operation, the second driving piece 27 in each clamping jaw assembly controls the sucking disc 24 to be adsorbed on the surface of the lens, the first clamping arm 22 and the second clamping arm 23 are controlled by the first driving piece 25 to clamp two side edges of the lens respectively, at the moment, the three clamping jaw assemblies adsorb three lenses simultaneously, the fourth driving piece 6 drives the first driving end and the second driving end to move oppositely, the first connecting rod 3A and the second connecting rod 3B respectively pull the second clamping jaw assembly 2B and the third clamping jaw assembly 2C to rotate, the third driving piece 4 stretches the first clamping jaw assembly 2A forwards to align the three lenses, finally, the three lenses can be simultaneously placed on the hanging frame 2' through the external mechanical arm, and after one-time clamping of the three lenses is completed, the driving pieces return to the initial state to perform a second clamping operation. Therefore, the lens clamping device with the structure can clamp a plurality of lenses to be placed on the hanging frame at the same time, and has high working efficiency.
Claims (8)
1. A lens clamping device, characterized in that: the clamping jaw comprises a mounting seat, a first clamping jaw assembly, a second clamping jaw assembly, a third clamping jaw assembly, a first connecting rod and a second connecting rod, wherein each clamping jaw assembly comprises a mounting frame, a first clamping arm, a second clamping arm and a sucker, which are oppositely arranged, a first driving piece for driving the first clamping arm and the second clamping arm to clamp or loosen and a second driving piece for driving the sucker to stretch out and draw back along the vertical direction are arranged on the mounting frame, and the first clamping arm and the second clamping arm are respectively arranged on two sides of the sucker; the mounting seat comprises a base, a first support and a second support are obliquely arranged on the left side and the right side of the base respectively, a first clamping jaw assembly is located on the base, a third driving piece used for driving the first clamping jaw assembly to stretch out and draw back along the front-back direction is arranged on the base, a first transmission rod is connected to a mounting frame of the second clamping jaw assembly, the middle of the first transmission rod is hinged to the first support, a second transmission rod is connected to the mounting frame of the third clamping jaw assembly, the middle of the second transmission rod is hinged to the second support, one end of the first connection rod is a first driving end, the other end of the first connection rod is hinged to the end of the first transmission rod, one end of the second connection rod is a second driving end, and the other end of the second connection rod is hinged to the end of the second transmission rod, and a fourth driving piece used for driving the first driving end and the second driving end to move oppositely or reversely is further arranged on the base.
2. The lens gripping device of claim 1, wherein: the second clamping jaw assembly and the third clamping jaw assembly are symmetrically arranged on two sides of the base, the two supports, the two connecting rods and the two transmission rods are symmetrically arranged on two sides of the base, and the first clamping jaw assembly is arranged on a central shaft of the base.
3. The lens gripping device of claim 2, wherein: the first clamping arms in the clamping jaw assemblies are arranged in tandem and obliquely, the second clamping arms are also arranged in tandem and obliquely corresponding to the first clamping arms, the front ends of the first clamping arms positioned at the front sides are inclined towards the second clamping arms, and the rear ends of the first clamping arms positioned at the rear sides are inclined towards the second clamping arms; the front end of the second clamping arm positioned at the front side is inclined towards the direction of the first clamping arm, and the rear end of the second clamping arm positioned at the rear side is inclined towards the direction of the first clamping arm.
4. The lens gripping device of claim 3, wherein: a first clamping groove is formed in the first clamping arm along the inclined direction of the first clamping arm, and the first clamping groove is positioned at one side of the first clamping arm facing the second clamping arm; the second clamping arm is provided with a second clamping groove along the inclined direction of the second clamping arm, and the second clamping groove is positioned on one side of the second clamping arm facing the first clamping arm.
5. The lens gripping device of claim 4, wherein: the front side of first driving piece be provided with the support frame, be equipped with backup pad and deflector about the support frame, the second driving piece sets up in the backup pad, is equipped with the guide holder on the deflector, the sucking disc upper end is connected with the guide bar, the guide bar wears to establish in the guide holder and sliding fit, the guide bar upper end is connected with second driving piece output.
6. The lens gripping device of claim 5, wherein: the support frame is provided with a long groove along the vertical direction, the first driving piece is provided with a positioning hole, and the long groove and the positioning hole are internally penetrated with a positioning piece.
7. The lens gripping device of claim 6, wherein: the guide rod is internally provided with an air hole, and an external air pipe communicated with the air hole is connected to the guide rod.
8. The lens gripping device of any of claims 1-7, wherein: the first driving piece and the fourth driving piece adopt pneumatic clamping fingers, and the second driving piece and the third driving piece adopt telescopic cylinders; the first driving end and the second driving end are respectively hinged with two output ends of the fourth driving piece, and the first clamping arm and the second clamping arm are respectively and integrally arranged or fixedly connected with the two output ends of the first driving piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910581973.1A CN110217590B (en) | 2019-06-30 | 2019-06-30 | Lens clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910581973.1A CN110217590B (en) | 2019-06-30 | 2019-06-30 | Lens clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110217590A CN110217590A (en) | 2019-09-10 |
| CN110217590B true CN110217590B (en) | 2024-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910581973.1A Active CN110217590B (en) | 2019-06-30 | 2019-06-30 | Lens clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110217590B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11255324A (en) * | 1998-03-10 | 1999-09-21 | Toray Ind Inc | Device for mounting lens on tray |
| CN205450411U (en) * | 2015-12-29 | 2016-08-10 | 中山联合光电科技股份有限公司 | Phone lens assembles equipment |
| CN107414877A (en) * | 2017-09-01 | 2017-12-01 | 佛山科学技术学院 | A kind of eyeglass automatic pick-up device |
| CN207861413U (en) * | 2018-01-25 | 2018-09-14 | 江西欣捷智能制造有限公司 | A kind of catching robot of optical mirror slip |
| CN109264398A (en) * | 2018-11-21 | 2019-01-25 | 丹阳市雷登智能科技有限公司 | The automatic feeder of machining eyeglass |
| CN209036559U (en) * | 2018-09-29 | 2019-06-28 | 福建瑛飞特机械制造有限公司 | A kind of optical mirror slip catching robot |
| CN210214068U (en) * | 2019-06-30 | 2020-03-31 | 温州艾特科智能科技有限公司 | Lens clamping device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7090559B2 (en) * | 2003-11-19 | 2006-08-15 | Ait Industries Co. | Ophthalmic lens manufacturing system |
-
2019
- 2019-06-30 CN CN201910581973.1A patent/CN110217590B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11255324A (en) * | 1998-03-10 | 1999-09-21 | Toray Ind Inc | Device for mounting lens on tray |
| CN205450411U (en) * | 2015-12-29 | 2016-08-10 | 中山联合光电科技股份有限公司 | Phone lens assembles equipment |
| CN107414877A (en) * | 2017-09-01 | 2017-12-01 | 佛山科学技术学院 | A kind of eyeglass automatic pick-up device |
| CN207861413U (en) * | 2018-01-25 | 2018-09-14 | 江西欣捷智能制造有限公司 | A kind of catching robot of optical mirror slip |
| CN209036559U (en) * | 2018-09-29 | 2019-06-28 | 福建瑛飞特机械制造有限公司 | A kind of optical mirror slip catching robot |
| CN109264398A (en) * | 2018-11-21 | 2019-01-25 | 丹阳市雷登智能科技有限公司 | The automatic feeder of machining eyeglass |
| CN210214068U (en) * | 2019-06-30 | 2020-03-31 | 温州艾特科智能科技有限公司 | Lens clamping device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110217590A (en) | 2019-09-10 |
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