CN112110280A - High-efficient optical communication is with optic fibre coiling mechanism - Google Patents
High-efficient optical communication is with optic fibre coiling mechanism Download PDFInfo
- Publication number
- CN112110280A CN112110280A CN202011085493.5A CN202011085493A CN112110280A CN 112110280 A CN112110280 A CN 112110280A CN 202011085493 A CN202011085493 A CN 202011085493A CN 112110280 A CN112110280 A CN 112110280A
- Authority
- CN
- China
- Prior art keywords
- winding
- optical fiber
- assembly
- rotating shaft
- optical communication
- 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.)
- Pending
Links
- 238000004891 communication Methods 0.000 title claims abstract description 26
- 230000003287 optical Effects 0.000 title claims abstract description 23
- 239000000835 fiber Substances 0.000 title description 6
- 238000004804 winding Methods 0.000 claims abstract description 99
- 239000003365 glass fiber Substances 0.000 claims abstract description 68
- 238000000034 method Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000000969 carrier Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000000149 penetrating Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/28—Traversing devices; Package-shaping arrangements
- B65H54/2818—Traversing devices driven by rod
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/40—Arrangements for rotating packages
- B65H54/44—Arrangements for rotating packages in which the package, core, or former is engaged with, or secured to, a driven member rotatable about the axis of the package
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/40—Arrangements for rotating packages
- B65H54/54—Arrangements for supporting cores or formers at winding stations; Securing cores or formers to driving members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/32—Optical fibres or optical cables
Abstract
The invention discloses an optical fiber winding device for efficient optical communication, which comprises a bottom plate and optical fibers, wherein a winding assembly and an adjusting assembly are arranged on the bottom plate; optical fiber winds and is established on winding assembly, and adjusting part lays in winding assembly the place ahead, and optical fiber wears to establish on adjusting part, and the transmission is connected between winding assembly and the adjusting part, and winding assembly wire winding in-process drives adjusting part's function simultaneously. The belt pair is in transmission connection, and a plurality of groups of rotating shafts are driven to rotate simultaneously; in the winding process of the winding assembly, the operation of the adjusting assembly is driven simultaneously; the driving ball slides along the thread groove to drive the movable block and the fixed rod to reciprocate up and down; the optical fiber is driven to move up and down, so that the optical fiber is wound on the winding assembly while the height of the optical fiber is changed, and the wire arrangement of the optical fiber is tighter in the winding process; the problem that the winding effect of the optical fiber is poor due to disordered winding in the winding process of the winding device is effectively solved; has good application prospect.
Description
Technical Field
The invention relates to the field of communication, in particular to an optical fiber winding device for efficient optical communication.
Background
The optical fiber communication system is a communication system which takes light as a carrier wave, utilizes glass with extremely high purity to be drawn into superfine optical fiber as a transmission medium, and transmits information by light through photoelectric conversion.
Currently, in the process of producing optical fiber, the optical fiber is usually required to be wound and placed; the existing coiling device is disordered in the coiling process, so that the coiling effect of the optical fiber is poor; and then provide an efficient optical fiber coiling device for optical communication.
Disclosure of Invention
The invention aims to provide an optical fiber winding device for efficient optical communication, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an optical fiber winding device for efficient optical communication comprises a bottom plate and optical fibers, wherein a winding assembly and an adjusting assembly are arranged on the bottom plate; the optical fiber is wound on the winding assembly, the adjusting assembly is arranged in front of the winding assembly, the optical fiber is arranged on the adjusting assembly in a penetrating mode, the winding assembly and the adjusting assembly are connected in a transmission mode, and the winding assembly is driven to operate in the winding process.
As a further scheme of the invention: the winding assembly comprises a supporting seat, a rotating shaft, a winding frame and a driving device, the supporting seat is fixedly arranged on the bottom plate, and the rotating shaft is rotatably arranged on the supporting seat; a limiting block is fixedly arranged on the rotating shaft, the winding frame is clamped on the limiting block, and one end of the optical fiber is fixedly connected to the winding frame; the driving device is arranged between the rotating shaft and the bottom plate.
As a still further scheme of the invention: the driving device adopts a servo-controlled motor, a rotating shaft of the motor is connected with the rotating shaft through a bevel gear pair, and the motor is fixedly connected on the bottom plate.
As a still further scheme of the invention: the rotating shaft is fixedly connected with a support plate, and the support plate is arranged below the limiting block; the winding frame is carried on the carrier plate.
As a still further scheme of the invention: the adjusting component comprises a supporting frame, a rotating rod, a sliding rod, a driving rod and a movable block; the supporting frame is fixedly connected to the bottom plate; the rotating rod is fixedly connected with the driving rod, is rotatably arranged on the bottom plate and is connected with the rotating shaft through a belt pair; the driving rod is provided with double thread grooves with opposite rotation directions, and the tail ends of the thread grooves are communicated with each other; the utility model discloses a cable wire drawing machine, including the actuating lever, the actuating lever fan is fixed on the support frame, the thread groove of actuating lever is established to the interior fixedly connected with drive ball of movable block, drive ball card, and slide bar fixed connection is on the support frame, and the slip cap is equipped with the slider on the slide bar, and fixedly connected with dead lever between slider and movable block, dead lever fan have seted up the through wires hole, and the cable is worn to.
As a still further scheme of the invention: and a porcelain bushing is distributed in the threading hole.
As a still further scheme of the invention: a rotating bush is arranged between the rotating shaft and the supporting seat.
As a still further scheme of the invention: four groups of rotating shafts are uniformly distributed, and adjacent rotating shaft supports are connected through belt pairs.
Compared with the prior art, the invention has the beneficial effects that: the belt pair is in transmission connection, and a plurality of groups of rotating shafts are driven to rotate simultaneously, so that the winding efficiency is improved; during the winding process of the winding assembly, the adjusting assembly is driven to operate simultaneously, the driving ball slides along the thread groove, and the movable block and the fixed rod are further driven to reciprocate up and down; the optical fiber is driven to move up and down, so that the optical fiber is wound on the winding assembly while the height of the optical fiber is changed, and the wire arrangement of the optical fiber is tighter in the winding process; the problem that the winding effect of the optical fiber is poor due to disordered winding in the winding process of the winding device is effectively solved; has good application prospect.
Drawings
Fig. 1 is a schematic structural diagram of an optical fiber winding device for efficient optical communication.
FIG. 2 is a schematic view of a winding element in an optical fiber winding device for high-efficiency optical communication.
Fig. 3 is a schematic structural diagram of an adjusting assembly in an optical fiber winding device for efficient optical communication.
Fig. 4 is a schematic structural diagram of a movable block in an optical fiber winding device for high-efficiency optical communication viewed from above.
Fig. 5 is a schematic view showing the structure of a driving rod in the optical fiber take-up device for high-efficiency optical communication.
In the figure: 1-bottom plate, 2-support frame, 3-rotating rod, 4-driving rod, 5-fixed rod, 6-threading hole, 7-sliding block, 8-sliding rod 8, 9-support seat, 10-winding frame, 11-optical fiber, 12-movable block, 14-rotating bush, 15-rotating shaft, 16-motor, 17-bevel gear pair, 18-limiting block, 19-carrier plate and 20-driving ball.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Example one
Referring to fig. 1-5, an optical fiber winding device for efficient optical communication includes a base plate 1 and an optical fiber 11, wherein a winding assembly and an adjusting assembly are disposed on the base plate 1; the optical fiber 11 is wound on the winding assembly, and further winding of the optical fiber 11 is realized; the adjusting assembly is arranged in front of the winding assembly, the optical fiber 11 penetrates through the adjusting assembly, and the height position of the optical fiber 11 is adjusted through the adjusting assembly; specifically, the winding assembly is in transmission connection with the adjusting assembly, so that the adjusting assembly is driven to operate during the winding process of the winding assembly, and further; in the winding process of the winding assembly, the height of the optical fiber 11 is further adjusted through the adjusting assembly, so that the height of the optical fiber 11 is further changed while the optical fiber 11 is wound on the winding assembly, and the wire arrangement of the optical fiber 11 is more compact and orderly in the winding process.
Specifically, the winding assembly comprises a supporting seat 9, a rotating shaft 15, a winding frame 10 and a driving device, wherein the supporting seat 9 is fixedly arranged on the bottom plate 1, and the rotating shaft 15 is rotatably arranged on the supporting seat 9; a limiting block 18 is fixedly arranged on the rotating shaft 15, the winding frame 10 is clamped on the limiting block 18, the winding frame 10 is further driven to rotate by the rotation of the rotating shaft 15, and one end of the optical fiber 11 is fixedly connected to the winding frame 10; further, the driving device is arranged between the rotating shaft 15 and the bottom plate 1, and further drives the rotating shaft 15 to rotate.
Further, the specific structural form of the driving device is not limited, in this embodiment, the driving device employs a servo-controlled motor 16, a rotating shaft of the motor 16 is connected with the rotating shaft 15 through a bevel gear pair 17, the motor 16 is fixedly connected to the base plate 1, and further the rotating shaft 15 is driven to rotate by the motor 16.
Specifically, in order to improve the stability of the device in the using process, a support plate 19 is fixedly connected to the rotating shaft 15, and the support plate 19 is arranged below the limiting block 18; the winding frame 10 is carried on the carrier plate 19, and the contact area between the winding frame and the rotating shaft 15 is further improved through the carrier plate 19, so that the stability in the use process is further improved.
Example two
In order to further explain the adjusting assembly in the above embodiment, in another embodiment of the present invention, an optical fiber 11 take-up device for efficient optical communication includes a support frame 2, a rotating rod 3, a sliding rod 8, a driving rod 4, and a movable block 12; specifically, the support frame 2 is fixedly connected to the bottom plate 1; the rotating rod 3 is fixedly connected with the driving rod 4, and the rotating rod 3 is rotatably arranged on the bottom plate 1 and is connected with the rotating shaft 15 through a belt pair; specifically, the driving rod 4 is provided with double thread grooves with opposite rotation directions, and the tail ends of the thread grooves are communicated with each other; a driving ball 20 is fixedly connected in the movable block 12, and the driving ball 20 is clamped in a thread groove of the driving rod 4; the device comprises a support frame 2, a sliding rod 8, a sliding block 7, a fixed rod 5, a wire through hole 6 and a cable, wherein the sliding rod 8 is fixedly connected to the support frame 2, the sliding block 8 is slidably sleeved with the sliding block 7, the fixed rod 5 is fixedly connected between the sliding block 7 and a movable block 12, the fixed rod 5 is provided with the wire through hole 6, the cable is arranged in the wire through hole 6 in a penetrating manner, further, in the rotating process of a driving rod 4, the movable block 12 effectively realizes rotation limiting under the action of the fixed rod 5, and meanwhile, a driving ball 20 slides along a wire through thread groove to further drive the movable block 12 and; bringing the optical fiber 11 up and down.
Specifically, in order to further improve the actual movement effect of the optical fiber 11, a ceramic bushing is arranged in the threading hole 6, so as to further reduce the friction force of the optical fiber 11.
EXAMPLE III
The embodiment is an improvement on the basis of the above embodiment, and the optical fiber winding device for efficient optical communication comprises a base plate 1 and an optical fiber 11, wherein a winding assembly and an adjusting assembly are arranged on the base plate 1; the winding assembly comprises a supporting seat 9, a rotating shaft 15, a winding frame 10 and a driving device, wherein the supporting seat 9 is fixedly arranged on the bottom plate 1, and the rotating shaft 15 is rotatably arranged on the supporting seat 9; a limiting block 18 is fixedly arranged on the rotating shaft 15, the winding frame 10 is clamped on the limiting block 18, the winding frame 10 is further driven to rotate by the rotation of the rotating shaft 15, and one end of the optical fiber 11 is fixedly connected to the winding frame 10; further, the driving device is arranged between the rotating shaft 15 and the bottom plate 1, and further drives the rotating shaft 15 to rotate; wherein, the rotating bush 14 is arranged between the rotating shaft 15 and the supporting seat, and the rotating effect of the rotating shaft 15 in the rotating process is further improved through the rotating bush 14.
In the embodiment, four groups of the rotating shafts 15 are uniformly distributed, and the adjacent rotating shaft 15 supports are connected through the belt pairs, so that the winding effect of the optical fiber 11 is greatly improved.
From the above detailed description of the embodiments, it is easy to understand that the working principle of the present invention is: a servo-controlled motor 16 drives the rotating shaft 15 to rotate, and drives the adjusting assembly to operate simultaneously in the winding process of the winding assembly; in the process of rotating the driving rod 4, the movable block 12 effectively realizes rotation limiting under the action of the fixed rod 5, and meanwhile, the driving ball 20 slides along the spiral groove to further drive the movable block 12 and the fixed rod 5 to do up-and-down reciprocating motion; the optical fiber 11 is driven to move up and down, so that the optical fiber 11 is wound on the winding assembly while the height of the optical fiber is changed, and the wire arrangement of the optical fiber 11 is more compact and ordered in the winding process.
It should be particularly noted that the servo motor 16 in the present application is an application in the prior art, and is connected through the transmission of the belt pair, and drives the plurality of sets of rotating shafts 15 to rotate at the same time, so as to improve the winding efficiency; during the winding process of the winding assembly, the operation of the adjusting assembly is simultaneously driven, the driving ball 20 slides along the threaded groove, and the movable block 12 and the fixed rod 5 are further driven to reciprocate up and down; the up-and-down motion that drives optic fibre 11 makes optic fibre 11 coil while altitude variation on the winding assembly for optic fibre 11 is the innovation point of this application in winding process winding displacement inseparabler in order, and the effectual coiling mechanism of having solved is carrying out the in-process of rolling and is establishing the confusion around, leads to the relatively poor problem of optic fibre 11's rolling effect.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. But all changes which come within the scope of the invention are intended to be embraced therein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Claims (8)
1. An optical fiber winding device for efficient optical communication comprises a base plate (1) and optical fibers (11), and is characterized in that a winding assembly and an adjusting assembly are arranged on the base plate (1); optical fiber (11) around establishing on winding assembly, adjusting part lays in winding assembly's the place ahead, optical fiber (11) wear to establish on adjusting part, winding assembly and adjusting part between the transmission be connected, winding assembly's wire winding in-process, the drive simultaneously adjusting part's operation.
2. The optical fiber winding device for efficient optical communication according to claim 1, wherein the winding assembly comprises a support base (9), a rotating shaft (15), a winding frame (10) and a driving device, the support base (9) is fixedly installed on the base plate (1), and the rotating shaft (15) is rotatably installed on the support base (9); a limiting block (18) is fixedly arranged on the rotating shaft (15), the winding frame (10) is clamped on the limiting block (18), and one end of the optical fiber (11) is fixedly connected to the winding frame (10); the driving device is arranged between the rotating shaft (15) and the bottom plate (1).
3. The efficient optical fiber winding device for optical communication as claimed in claim 2, wherein the driving device is a servo-controlled motor (16), a rotating shaft of the motor (16) is connected with the rotating shaft (15) through a bevel gear pair (17), and the motor (16) is fixedly connected to the base plate (1).
4. The optical fiber winding device for efficient optical communication according to claim 3, wherein a support plate (19) is fixedly connected to the rotating shaft (15), and the support plate (19) is arranged below the limiting block (18); the winding frame (10) is carried on the carrier plate (19).
5. The optical fiber winding device for efficient optical communication according to claim 1, wherein the adjusting assembly comprises a supporting frame (2), a rotating rod (3), a sliding rod (8), a driving rod (4) and a movable block (12); the support frame (2) is fixedly connected to the bottom plate (1); the rotating rod (3) is fixedly connected with the driving rod (4), and the rotating rod (3) is rotatably arranged on the bottom plate (1) and is connected with the rotating shaft (15) through a belt pair; the driving rod (4) is provided with double thread grooves with opposite rotation directions, and the tail ends of the thread grooves are communicated with each other; fixedly connected with drive ball (20) in movable block (12), drive ball (20) card is established in the thread groove of actuating lever (4), and slide bar (8) fixed connection is on support frame (2), and sliding sleeve is equipped with slider (7) on slide bar (8), fixedly connected with dead lever (5) between slider (7) and movable block (12), and through wires hole (6) have been seted up to dead lever (5) fan, and the cable is worn to establish in through wires hole (6).
6. The optical fiber winding device for efficient optical communication according to claim 5, wherein a ceramic bushing is arranged in the threading hole (6).
7. The optical fiber winder for efficient optical communication according to claim 2, wherein a rotating bushing (14) is installed between the rotating shaft (15) and the supporting base.
8. The optical fiber winding device for efficient optical communication according to claim 2, wherein four sets of the rotating shafts (15) are uniformly distributed, and the brackets of adjacent rotating shafts (15) are connected by a belt pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085493.5A CN112110280A (en) | 2020-10-12 | 2020-10-12 | High-efficient optical communication is with optic fibre coiling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085493.5A CN112110280A (en) | 2020-10-12 | 2020-10-12 | High-efficient optical communication is with optic fibre coiling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112110280A true CN112110280A (en) | 2020-12-22 |
Family
ID=73798047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011085493.5A Pending CN112110280A (en) | 2020-10-12 | 2020-10-12 | High-efficient optical communication is with optic fibre coiling mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112110280A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3877655A (en) * | 1972-04-17 | 1975-04-15 | Felix G Cardinal | System, method and apparatus for processing raw rubber into strip stock for retreading tires |
| JPH10192969A (en) * | 1996-12-27 | 1998-07-28 | Fujikura Ltd | Under roll type automatic cable winding device |
| CN207293777U (en) * | 2017-09-03 | 2018-05-01 | 江苏金米兰纺织有限公司 | A kind of colour-spun yarns bobbin winder device |
| CN208199975U (en) * | 2018-05-28 | 2018-12-07 | 东莞市莱悦电业制造有限公司 | Bobbin winder device is used in a kind of production of power supply line |
| DE102017006865A1 (en) * | 2017-07-19 | 2019-01-24 | Oerlikon Textile Gmbh & Co. Kg | winding machine |
| CN109592485A (en) * | 2018-11-28 | 2019-04-09 | 杭州布拉格纺织有限公司 | Winding device is used in a kind of weaving of sofa cloth |
| CN209242336U (en) * | 2018-12-18 | 2019-08-13 | 深圳市世和光缆技术有限公司 | A kind of optical cable and its bobbin winder device |
| CN211419109U (en) * | 2019-12-27 | 2020-09-04 | 张家港市民泰纺织有限公司 | Spandex yarn coiling mechanism |
| CN211521186U (en) * | 2019-12-03 | 2020-09-18 | 盐城市盐都区华宏绳网厂有限公司 | Mesh bag plastic flat wire drawing equipment |
-
2020
- 2020-10-12 CN CN202011085493.5A patent/CN112110280A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3877655A (en) * | 1972-04-17 | 1975-04-15 | Felix G Cardinal | System, method and apparatus for processing raw rubber into strip stock for retreading tires |
| JPH10192969A (en) * | 1996-12-27 | 1998-07-28 | Fujikura Ltd | Under roll type automatic cable winding device |
| DE102017006865A1 (en) * | 2017-07-19 | 2019-01-24 | Oerlikon Textile Gmbh & Co. Kg | winding machine |
| CN207293777U (en) * | 2017-09-03 | 2018-05-01 | 江苏金米兰纺织有限公司 | A kind of colour-spun yarns bobbin winder device |
| CN208199975U (en) * | 2018-05-28 | 2018-12-07 | 东莞市莱悦电业制造有限公司 | Bobbin winder device is used in a kind of production of power supply line |
| CN109592485A (en) * | 2018-11-28 | 2019-04-09 | 杭州布拉格纺织有限公司 | Winding device is used in a kind of weaving of sofa cloth |
| CN209242336U (en) * | 2018-12-18 | 2019-08-13 | 深圳市世和光缆技术有限公司 | A kind of optical cable and its bobbin winder device |
| CN211521186U (en) * | 2019-12-03 | 2020-09-18 | 盐城市盐都区华宏绳网厂有限公司 | Mesh bag plastic flat wire drawing equipment |
| CN211419109U (en) * | 2019-12-27 | 2020-09-04 | 张家港市民泰纺织有限公司 | Spandex yarn coiling mechanism |
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