CN111929031A - Optical fiber looping device and automatic bending loss testing method - Google Patents
Optical fiber looping device and automatic bending loss testing method Download PDFInfo
- Publication number
- CN111929031A CN111929031A CN202010799562.2A CN202010799562A CN111929031A CN 111929031 A CN111929031 A CN 111929031A CN 202010799562 A CN202010799562 A CN 202010799562A CN 111929031 A CN111929031 A CN 111929031A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- sliding table
- clamp
- ring guide
- column ring
- 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.)
- Granted
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 388
- 238000005452 bending Methods 0.000 title claims abstract description 88
- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 102
- 239000000835 fiber Substances 0.000 claims description 88
- 210000000078 claw Anatomy 0.000 claims description 28
- 238000009499 grossing Methods 0.000 claims description 25
- 230000002265 prevention Effects 0.000 claims 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 12
- 230000010511 looping mechanism Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007380 fibre production Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0207—Details of measuring devices
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses an optical fiber looping device and an automatic bending loss testing method. The device comprises: the optical fiber clamp placing face that sets up side by side and follow the optical fiber clamp placing face side horizontal motion's arc mesa and double-deck slip table, the direction setting of optical fiber clamp placing face side is followed to arc mesa and double-deck slip table. The method comprises the following steps: a cutoff wavelength mode and/or a macrobend mode. The looping device provided by the invention can conveniently realize different types of optical fiber bending, including optical fiber bending in a cut-off wavelength test mode and optical fiber bending with preset turns in a macrobending mode, and can realize automatic optical fiber bending test including bending loss test of optical fibers in batches by matching with a PLC control system and an electric/pneumatic servo system, thereby simplifying the flow, saving human resources, improving the production efficiency and increasing the economic benefit.
Description
Technical Field
The invention belongs to the technical field of optical fiber testing, and particularly relates to an optical fiber looping device and an automatic bending loss testing method.
Background
With the advent of the "5G + all-optical network" era, the optical communication industry based on optical fibers will face a major development opportunity. However, due to the new crown epidemic situation, the optical fiber production enterprises accelerate the promotion of the upgrading and transformation of the industry, the competition of the optical fiber industry is intensified, and how to win the competition with higher production efficiency and better product quality becomes the direction of continuous efforts of all parties.
Meanwhile, the requirement for the bending loss of the optical fiber is higher and higher due to the narrow bending radius and storage space of the indoor and machine room, and the bending of the optical fiber also affects other properties of the optical fiber, such as cut-off wavelength, high-power injection, storage life and the like. At present, optical fiber bending loss test is mostly manual operation, to different types of optical fiber samples, still need select multiple bend radius to make a round, and this kind of mode can't adapt to large-scale production and automatic operation demand, and the posture of putting of the non-bending section of optical fiber sample varies from person to person, and the uniformity is relatively poor, and extra bending can influence bending loss result to a certain extent, and simultaneously, operating personnel carries out the repetition work always, has the work efficiency to reduce, and the working mode is more complicated, the scheduling problem of easily makeing mistakes.
However, as the optical fiber production capacity is continuously expanded, the requirements for the efficiency and the automation degree of the optical fiber bending loss test are higher and higher, and therefore, an automatic looping device for the optical fiber bending loss test is urgently needed, the optical fiber bending loss test can be efficiently and reliably realized under the unmanned condition, and the automatic looping device has multiple working modes.
Disclosure of Invention
The invention provides an optical fiber looping device and an automatic bending loss testing method aiming at overcoming the defects or the improvement requirements in the prior art, and aims to realize the bending of optical fibers in a macro-bending mode and a cut-off wavelength mode by integrating optical fiber bending devices with different looping diameter specifications, so that the technical problem of low testing efficiency caused by incapability of automatically realizing the bending of optical fibers with different types and different specifications during the optical fiber bending loss test in the prior art is solved.
In order to achieve the above object, according to one aspect of the present invention, there is provided an optical fiber looping apparatus, comprising an optical fiber clamp placing surface, an arc-shaped table surface and a double-layer sliding table, wherein the optical fiber clamp placing surface is arranged side by side, and the arc-shaped table surface and the double-layer sliding table horizontally move along a side edge of the optical fiber clamp placing surface;
one end of the arc table top is as high as the clamp placing surface and is provided with an arc surface with a downward bending preset diameter, and the arc table top is used for enabling the optical fiber sample to form an optical fiber bending with the preset diameter along the surface of the optical fiber sample in a plane vertical to the side edge of the optical fiber clamp placing surface;
the double-layer sliding table is provided with an upper sliding table and a lower sliding table which are vertically overlapped and relatively slide, and the upper sliding table is provided with a long hole along the relative movement direction of the upper sliding table and the lower sliding table; the lower sliding table is provided with a column ring guide wheel which penetrates through the long hole; the upper sliding table is provided with a column ring guide wheel which is matched with the column ring guide wheel of the lower sliding table; when the upper sliding table and the lower sliding table slide relatively, the column ring guide wheel of the lower sliding table slides along the long hole and is separated from or staggered with the column ring guide wheel of the corresponding upper sliding table; when the column ring guide wheel of the lower sliding table is separated from the column ring guide wheel of the upper sliding table, a channel through which optical fibers pass linearly is formed, and when the column ring guide wheel of the lower sliding table is staggered with the column ring guide wheel of the upper sliding table, a semi-circular channel with a preset number is formed, so that optical fiber samples form optical fiber bends with preset number and preset specification in a horizontal plane.
Preferably, the arc table top of the automatic looping device for testing the bending loss of the optical fiber comprises a plurality of sections of arc surfaces with preset curvatures, and the arc surfaces with different curvatures are spliced with the placing surface of the optical fiber clamp by rotating the arc table top around a shaft and are used for forming bending of the optical fiber with different preset diameters.
Preferably, the automatic looping device for testing the bending loss of the optical fiber is provided with a lifting mechanism below the arc-shaped table surface and/or the double-layer sliding table; preferably, the column ring guide has a rounded top, and more preferably, a bearing is installed therein for rotating the column ring guide in a circumferential direction.
Preferably, the optical fiber bending loss test automatic looping device is provided with an optical fiber clamp placing block, the shape of which is matched with that of an optical fiber clamp, on the optical fiber clamp placing surface, and the optical fiber clamp is fixed; the column ring guide wheel of the upper sliding table of the double-layer sliding table and the column ring guide wheel of the lower sliding table matched with the upper sliding table comprise a plurality of column ring guide wheel series with specific diameters, wherein each column ring guide wheel series is provided with column ring guide wheel sets, the number of the column ring guide wheel series is the same as that of the optical fiber clamp placing blocks, and the distance of the column ring guide wheel series is matched with that of the optical fiber clamp placing blocks.
Preferably, the automatic looper device of optic fibre bending loss test, its include with the relative fine mechanism of stroking down with the fingers that sets up of optic fibre anchor clamps face of placing, the mechanism of stroking down with the fingers include with the parallel relative optic fibre of optic fibre anchor clamps face of placing prevents the link plate, and sets up optic fibre anchor clamps are placed the same and interval and optic fibre anchor clamps and are placed the pneumatic claw that a piece interval matches on the link plate is prevented to optic fibre.
Preferably, the pneumatic claw of the automatic looping device for the optical fiber bending loss test comprises a fiber clamping finger and a fiber holding finger, the fiber clamping finger is used for clamping the optical fiber so as to accurately fix the position of the optical fiber, and a small space is formed when the fiber holding finger is folded, so that the optical fiber is limited within the working range of the fiber clamping finger.
Preferably, the automatic looping device for the optical fiber bending loss test comprises a feeding mechanism, wherein the fiber smoothing mechanism is arranged on the feeding mechanism, and the feeding mechanism is used for driving the fiber smoothing mechanism to be close to or far away from the placing surface of the optical fiber clamp so as to be matched with the bending or straightening state of an optical fiber sample in a horizontal plane.
Preferably, the automatic looping device for the optical fiber bending loss test comprises an optical fiber motion mechanism, wherein the optical fiber motion mechanism is used for assembling an optical fiber clamp to pass through or avoid a fiber smoothing mechanism according to a preset condition and placing or removing the optical fiber clamp on a placing surface of the optical fiber clamp;
the optical fiber movement mechanism is preferably a three-axis gantry manipulator which is erected above the optical fiber clamp placing table-board, the arc table-board, the double-layer sliding table and the fiber smoothing mechanism, and the tail end of the optical fiber movement mechanism is provided with a gripper matched with an optical fiber sample clamp and the optical fiber clamp used for grabbing, carrying and placing an optical fiber sample.
According to another aspect of the invention, a bending loss automatic test method applying the optical fiber looping device is provided, and comprises a cut-off wavelength mode and/or a macrobend mode;
when in a cut-off wavelength mode, the clamp of the optical fiber sample provided with the clamp is placed at a corresponding position of the placing surface of the optical fiber clamp; the arc table top moves to be flush with the placing surface of the optical fiber clamp; the optical fiber sample is arranged in a plane vertical to the side edge of the placing surface of the optical fiber clamp
When the optical fiber sample is in a macrobending mode, the clamp of the optical fiber sample provided with the clamp is placed at a corresponding position of the placing surface of the optical fiber clamp through a fiber stroking device, so that the optical fiber sample is fixed in a horizontal plane; the double-layer sliding table moves to the front of the placing surface of the optical fiber clamp, the column ring guide wheel of the double-layer sliding table penetrates through the optical fiber from bottom to top, and the double-layer sliding table moves to the place surface of the optical fiber clamp to be flush, so that the optical fiber is positioned in a channel through which the optical fiber linearly passes, wherein the channel is formed by a group of lower sliding table column ring guide wheels with preset diameters and upper sliding table column ring guide wheels; the upper sliding table and the lower sliding table of the double-layer sliding table move relatively, and a group of lower sliding table column ring guide wheels with preset diameters and upper sliding table column ring guide wheels matched with the lower sliding table column ring guide wheels form semicircular channels with preset numbers, so that optical fiber samples form optical fiber bends with preset numbers and preset specifications in a horizontal plane.
Preferably, the bending loss automatic test method is characterized in that the optical fiber sample is continuously tested in a cut-off wavelength mode and a macrobend mode with different diameters.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
the looping device provided by the invention can conveniently realize different types of optical fiber bending, including optical fiber bending in a cut-off wavelength test mode and optical fiber bending with preset turns in a macrobending mode, and can realize automatic optical fiber bending test including bending loss test of optical fibers in batches by matching with a PLC control system and an electric/pneumatic servo system, thereby simplifying the flow, saving human resources, improving the production efficiency and increasing the economic benefit.
Drawings
FIG. 1 is a schematic structural diagram of an optical fiber looping device provided by the present invention;
FIG. 2 is a schematic view of an arc-shaped table top and a double-layer sliding table of the optical fiber looping device provided by the invention;
FIG. 3 is a schematic view of a fiber clamp placement surface of the optical fiber looping device provided by the present invention;
FIG. 4 is a schematic structural diagram of an arc-shaped table top and a double-layer sliding table of the optical fiber looping device provided by the invention;
FIG. 5 is a schematic view of the gas claw structure;
FIG. 6 is a schematic view of an optical fiber looping apparatus according to embodiment 1 of the present invention;
FIG. 7 is a schematic view of the installation of the optical fiber looping device provided in embodiment 2 of the present invention;
FIG. 8 is a schematic view of a fiber clamp installation used in an embodiment of the present invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein: 1 is testing equipment, 11 is an optical fiber sample, 12 is an optical fiber clamp, 13 is an optical fiber clamp placing table top, 14 is an optical fiber clamp placing block, 2 is a double-layer sliding table, 21 is an upper sliding table, 22 is a lower sliding table, 23 is a column ring guide wheel, 24 is a pin, 25 is an arc table top, 26 is a looping mechanism, 27 is a lifting mechanism, 28 is a support plate, 29 is a traversing mechanism, 30 is a limit block, 3 is an optical fiber sample conveying line, 31 is a drag chain, 32 is a sensor, 4 is a fiber smoothing mechanism, 40 is a connecting block, 41 is an air claw, 43 is a height adjusting plate, 44 is a fiber holding finger, 45 is a fiber clamping finger, 46 is a quick-insertion joint, 47 is an optical fiber anti-hanging plate, 5 is a signal lamp, 51 is a feeding mechanism, 52 is an adapter plate, 6 is a three-shaft manipulator, 60 is a rack, 7 is a portal,
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The optical fiber looping device provided by the invention comprises an optical fiber movement mechanism, an optical fiber clamp placing surface, an arc table surface, a double-layer sliding table and a fiber smoothing mechanism, wherein the optical fiber movement mechanism is arranged on the optical fiber clamp placing surface;
the optical fiber clamp placing surface is located right ahead of the optical fiber bending loss test equipment, and an optical fiber clamp placing block ahead of the optical fiber clamp placing surface is provided with a fiber clamping finger for clamping an optical fiber head part, so that an optical fiber sample is prevented from sliding during bending and is accurately positioned. The optical fiber clamp comprises an arc-shaped table top and a double-layer sliding table, wherein the arc-shaped table top and the double-layer sliding table horizontally move along the side edge of the optical fiber clamp placing surface, and as shown in fig. 2, the arc-shaped table top and the double-layer sliding table are arranged along the direction of the side edge of the optical fiber clamp placing surface;
the optical fiber movement mechanism is used for enabling the optical fiber clamp to pass through or avoid the fiber smoothing mechanism according to the preset condition and placing or removing the optical fiber clamp on the placing surface of the optical fiber clamp;
the optical fiber clamp placing surface is provided with an optical fiber clamp placing block matched with the shape of the optical fiber clamp as shown in FIG. 3, and the optical fiber clamp is fixed; the column ring guide wheel of the upper sliding table of the double-layer sliding table and the column ring guide wheel of the lower sliding table matched with the upper sliding table comprise a plurality of column ring guide wheel series with specific diameters, wherein each column ring guide wheel series is provided with column ring guide wheel sets, the number of the column ring guide wheel series is the same as that of the optical fiber clamp placing blocks, and the distance of the column ring guide wheel series is matched with that of the optical fiber clamp placing blocks.
As shown in fig. 4, one end of the arc-shaped mesa has the same height as the clamp placing surface and has an arc surface with a downward bending preset diameter, so that the optical fiber sample forms an optical fiber bending with the preset diameter along the surface of the optical fiber sample in a plane perpendicular to the side edge of the optical fiber clamp placing surface; the arc table top preferably comprises a plurality of sections of arc surfaces with preset curvatures, and the arc surfaces with different curvatures are spliced with the optical fiber clamp placing surface by the rotation of the arc table top around the shaft and used for forming optical fiber bending with different preset diameters.
The double-layer sliding table is provided with an upper sliding table and a lower sliding table which are vertically overlapped and relatively slide, and the upper sliding table is provided with a long hole along the relative movement direction of the upper sliding table and the lower sliding table, as shown in fig. 4; the lower sliding table is provided with a column ring guide wheel which penetrates through the long hole; the upper sliding table is provided with a column ring guide wheel which is matched with the column ring guide wheel of the lower sliding table; when the upper sliding table and the lower sliding table slide relatively, the column ring guide wheel of the lower sliding table slides along the long hole and is separated from or staggered with the column ring guide wheel of the corresponding upper sliding table; when the column ring guide wheel of the lower sliding table is separated from the column ring guide wheel of the upper sliding table, a channel through which optical fibers pass linearly is formed, and when the column ring guide wheel of the lower sliding table is staggered with the column ring guide wheel of the upper sliding table, a semi-circular channel with a preset number is formed, so that optical fiber samples form optical fiber bends with preset number and preset specification in a horizontal plane.
A lifting mechanism is arranged below the arc table top and/or the double-layer sliding table; preferably, the column ring guide has a rounded top, and more preferably, a bearing is installed therein for rotating the column ring guide in a circumferential direction.
The fiber smoothing mechanism comprises an optical fiber anti-hanging plate and air claws, the optical fiber anti-hanging plate is parallel to and opposite to the placement surface of the optical fiber clamp, the air claws are arranged on the optical fiber anti-hanging plate, the number of the optical fiber clamp placement blocks is the same, and the intervals of the optical fiber clamp placement blocks are matched with the intervals of the optical fiber clamp placement blocks. The air claw, as shown in fig. 5, includes a fiber clamping finger and a fiber holding finger, the fiber clamping finger is used for clamping the optical fiber so as to accurately fix the position of the optical fiber, and the fiber holding finger forms a smaller space when being folded, so that the optical fiber is limited within the working range of the fiber clamping finger. The fiber smoothing mechanism is arranged on the feeding mechanism, and the feeding mechanism is used for driving the fiber smoothing mechanism to be close to or far away from the placing surface of the optical fiber clamp so as to be matched with the bending or straightening state of an optical fiber sample in a horizontal plane.
The optical fiber looping method provided by the invention comprises a cut-off wavelength mode and/or a macrobend mode;
when in a cut-off wavelength mode, the clamp of the optical fiber sample provided with the clamp is placed at a corresponding position of the placing surface of the optical fiber clamp; the arc table top moves to be flush with the placing surface of the optical fiber clamp; the optical fiber sample is arranged in a plane vertical to the side edge of the placing surface of the optical fiber clamp
When the optical fiber sample is in a macrobending mode, the clamp of the optical fiber sample provided with the clamp is placed at a corresponding position of the placing surface of the optical fiber clamp through a fiber stroking device, so that the optical fiber sample is fixed in a horizontal plane; the double-layer sliding table moves to the front of the placing surface of the optical fiber clamp, the column ring guide wheel of the double-layer sliding table penetrates through the optical fiber from bottom to top, and the double-layer sliding table moves to the place surface of the optical fiber clamp to be flush, so that the optical fiber is positioned in a channel through which the optical fiber linearly passes, wherein the channel is formed by a group of lower sliding table column ring guide wheels with preset diameters and upper sliding table column ring guide wheels; the upper sliding table and the lower sliding table of the double-layer sliding table move relatively, a group of lower tire column ring guide wheels with preset diameters and upper sliding table column ring guide wheels matched with the lower tire column ring guide wheels form semicircular channels with preset numbers, so that optical fiber samples form optical fiber bends with preset numbers and preset specifications in a horizontal plane.
When the optical fiber looping method comprises a mechanism wavelength mode and a plurality of groups of macrobending modes, the optical fiber moves back to the initial position through the optical fiber movement mechanism, so that tests in different modes or different specifications are continuously carried out.
The following are examples:
example 1
As shown in fig. 6, an optical fiber looping device is an automatic looping device for bending loss of an optical fiber, and includes an optical fiber movement mechanism, an optical fiber clamp placing surface, an arc table surface, a double-layer sliding table, and a fiber smoothing mechanism;
the optical fiber clamp placing surface is located right ahead of the optical fiber bending loss test equipment, and an optical fiber clamp placing block ahead of the optical fiber clamp placing surface is provided with a fiber clamping finger for clamping an optical fiber head part, so that an optical fiber sample is prevented from sliding during bending and is accurately positioned.
The optical fiber clamp placing surface is provided with an optical fiber clamp placing block matched with the optical fiber clamp in shape, and the optical fiber clamp is fixed.
The arc-shaped table top and the double-layer sliding table are sequentially arranged along the side edge of the placement surface of the optical fiber clamp, are relatively fixed and supported by the support plate, and the traversing mechanism is positioned below the support plate and consists of a servo motor, a linear guide rail, a ball screw, a bottom plate, a limiting block, a sensor, a drag chain, a caster wheel and a height adjusting block and is horizontally and linearly moved under the action of the ball screw, so that the arc-shaped table top or the double-layer sliding table is horizontally moved along the side edge of the optical fiber clamp, the arc-shaped table top or the double-layer sliding table is moved to be flush with the placement surface of the optical fiber clamp, and; the fiber smoothing mechanism is arranged opposite to the placing surface of the optical fiber clamp; the optical fiber movement mechanism is preferably a three-axis gantry manipulator which is erected above the optical fiber clamp placing table-board, the arc table-board, the double-layer sliding table and the fiber smoothing mechanism, and the tail end of the optical fiber movement mechanism is provided with a gripper matched with an optical fiber sample clamp and the optical fiber clamp used for grabbing, carrying and placing an optical fiber sample. The optical fiber movement mechanism can be realized by a mechanical arm, and is not limited to the three-axis gantry mechanical arm, the common three-axis mechanical arm or a six-axis mechanical arm for realizing more complex actions in the embodiment.
One end of the arc table top is as high as the clamp placing surface and is provided with an arc surface with a downward bending preset diameter, and the arc table top is used for forming optical fiber bending with the preset diameter along the surface of the arc table top in a plane perpendicular to the moving direction; the diameter of the curved arc is 280 mm.
The double-layer sliding table is composed of an upper sliding table (a fixed sliding table), a lower sliding table (a movable sliding table) and a looping mechanism from top to bottom, the movable sliding table is in horizontal linear motion under the action of the cylinder through a linear bearing on the looping mechanism, and the double-layer sliding table can be used for bending optical fiber samples in a macrobending mode. The polyurethane material buffer block is installed to the slip table both sides, and reducible cylinder strikes the influence to optic fibre sample bending effect. Two groups of 4 series column ring guide wheels (the diameter specifications are respectively 10mm, 15mm, 20mm and 30mm) are respectively arranged on the movable sliding table and the fixed sliding table, the column ring guide wheels are slender columns, the top parts of the column ring guide wheels are spherical, bearings are arranged in the column ring guide wheels, the column ring guide wheels can rotate in the circumferential direction and can be used for bending an optical fiber sample in a macrobending mode according to a specified radius, two groups of column ring guide wheels are respectively arranged on each series, and the distance between the two column ring guide wheels and the two optical fiber clamp placing blocks on the optical. The fixed sliding table is provided with a long hole, and a column ring guide wheel of the movable sliding table penetrates through the long hole and slides along the long hole. And a long and thin pin with a spherical top is further arranged on the movable sliding table and is matched with a column ring guide wheel on the fixed sliding table, so that the movable sliding table can be used for tangential spacing of the non-bending section and the bending section of the optical fiber.
The lifting mechanism is positioned below the double-layer sliding table and above the support plate, the double-layer sliding table is vertically lifted under the action of the air cylinder through the linear bearing on the double-layer sliding table, the lifting mechanism can be used for being as high as a working surface of the testing equipment and a placing surface of an optical fiber clamp during lifting, and can be used for mode switching during descending, so that the interference between an optical fiber sample and a column ring guide wheel is avoided. The linear bearing of the lifting mechanism is provided with a fixing ring which can limit the lifting height.
The fiber smoothing mechanism comprises an optical fiber anti-hanging plate, wherein the optical fiber anti-hanging plate is parallel and opposite to the placement surface of the optical fiber clamp, the optical fiber anti-hanging plate is installed on a feeding mechanism, the optical fiber anti-hanging plate is provided with two sets of air claws, the distance between the air claws is the same as that between the two sets of air claws, the air claws comprise optical fiber clamping fingers and optical fiber holding fingers, the wire clamping fingers are used for clamping optical fibers at the tail part of the optical fiber to accurately fix the position of the optical fiber, the optical fiber holding fingers form a small space when being folded, and therefore the optical fiber is limited to be used for limiting an optical fiber sample to be tightly attached to the top of a macro-bending sliding table board in the. The optical fiber hanging-preventing plate is a sheet metal part and is positioned in front of the air claw, and can be used for preventing an optical fiber sample from being hooked and hung.
The feeding mechanism is positioned in front of the double-layer sliding table and consists of an electric cylinder, a linear guide rail, an adapter plate and a drag chain. Under the action of the electric cylinder, the fiber stroking mechanism is driven to do horizontal linear motion and is used for recovering and maintaining the posture of the optical fiber sample before and after the bending test.
In the embodiment, the centers of all the air claws are coaxial with the optical fiber samples on the optical fiber clamp, and the fingers of the air claws can be opened and closed at 180 degrees. The silica gel material finger is all installed to press from both sides fine finger, through adjusting pressure and velocity of flow size, can be used to alleviate clamping-force damage optical fiber sample. The air claw is provided with a height adjusting plate which can be used for supporting an optical fiber sample.
In this embodiment, the lifting mechanism and the traversing mechanism are provided with an electric/pneumatic servo system, and program control is performed according to signals of the PLC control system and feedback of the sensor. The signal lamp is located the portal frame top, sets up red/yellow/green tristimulus designation lamp, can be used to indicate equipment idle/work/fault status.
Example 2
As shown in fig. 7, an optical fiber looping device is an automatic looping device for bending loss of an optical fiber, and includes an optical fiber movement mechanism, an optical fiber clamp placing surface, an arc table surface, a double-layer sliding table, and a fiber smoothing mechanism;
the optical fiber clamp placing surface is located right ahead of the optical fiber bending loss test equipment, and an optical fiber clamp placing block ahead of the optical fiber clamp placing surface is provided with a fiber clamping finger for clamping an optical fiber head part, so that an optical fiber sample is prevented from sliding during bending and is accurately positioned.
The optical fiber clamp placing surface is provided with an optical fiber clamp placing block matched with the optical fiber clamp in shape, and the optical fiber clamp is fixed.
The arc-shaped table top and the double-layer sliding table are sequentially arranged along the side edge of the placement surface of the optical fiber clamp, are relatively fixed and supported by the support plate, and the traversing mechanism is positioned below the support plate and consists of a servo motor, a linear guide rail, a ball screw, a bottom plate, a limiting block, a sensor, a drag chain, a caster wheel and a height adjusting block and is horizontally and linearly moved under the action of the ball screw, so that the arc-shaped table top or the double-layer sliding table is horizontally moved along the side edge of the optical fiber clamp, the arc-shaped table top or the double-layer sliding table is moved to be flush with the placement surface of the optical fiber clamp, and; the fiber smoothing mechanism is arranged opposite to the placing surface of the optical fiber clamp; the optical fiber movement mechanism is a three-axis manipulator which is erected right in front of the optical fiber clamp placing table board, and the tail end of the optical fiber movement mechanism is provided with a gripper matched with the optical fiber sample clamp and used for grabbing, carrying and placing the optical fiber clamp of the optical fiber sample.
The arc table top and the arc table top comprise arc surfaces with multiple sections of preset curvatures, the arc table top rotates around a shaft and is matched with the lifting mechanism to enable the arc surfaces with different curvatures to be spliced with the optical fiber clamp placing surface, and the arc table top are used for forming optical fiber bends with different preset diameters. The lateral projection of the curved surface is an involute, and as shown in fig. 7, the diameters of the circular arcs are 240mm, 280mm, 320mm and 360mm respectively.
The double-layer sliding table is composed of an upper sliding table (a fixed sliding table), a lower sliding table (a movable sliding table) and a looping mechanism from top to bottom, the movable sliding table is in horizontal linear motion under the action of the cylinder through a linear bearing on the looping mechanism, and the double-layer sliding table can be used for bending optical fiber samples in a macrobending mode. The polyurethane material buffer block is installed to the slip table both sides, and reducible cylinder strikes the influence to optic fibre sample bending effect. Two rows of 4 series column ring guide wheels (the diameter specifications are respectively 10mm, 15mm, 20mm and 30mm) are respectively arranged on the movable sliding table and the fixed sliding table, the column ring guide wheels are slender columns, the top is spherical, a bearing is arranged in the column ring guide wheels, the column ring guide wheels can rotate in the circumferential direction and can be used for bending an optical fiber sample in a macrobending mode according to a specified radius, two groups of column ring guide wheels are respectively arranged on each series, and the distance between the two column ring guide wheels and the two optical fiber clamp placing blocks on the optical fiber clamp placing surface is the. The fixed sliding table is provided with a long hole, and a column ring guide wheel of the movable sliding table penetrates through the long hole and slides along the long hole. And a long and thin pin with a spherical top is further arranged on the movable sliding table and is matched with a column ring guide wheel on the fixed sliding table, so that the movable sliding table can be used for tangential spacing of the non-bending section and the bending section of the optical fiber.
The lifting mechanism is positioned below the double-layer sliding table and above the support plate, the double-layer sliding table is vertically lifted under the action of the air cylinder through the linear bearing on the double-layer sliding table, the lifting mechanism can be used for being as high as a working surface of the testing equipment and a placing surface of an optical fiber clamp during lifting, and can be used for mode switching during descending, so that the interference between an optical fiber sample and a column ring guide wheel is avoided. The linear bearing of the lifting mechanism is provided with a fixing ring which can limit the lifting height.
The fiber smoothing mechanism comprises an optical fiber anti-hanging plate, wherein the optical fiber anti-hanging plate is parallel and opposite to the placement surface of the optical fiber clamp, the optical fiber anti-hanging plate is installed on a feeding mechanism, the optical fiber anti-hanging plate is provided with two sets of air claws, the distance between the air claws is the same as that between the two sets of air claws, the air claws comprise optical fiber clamping fingers and optical fiber holding fingers, the wire clamping fingers are used for clamping optical fibers at the tail part of the optical fiber to accurately fix the position of the optical fiber, the optical fiber holding fingers form a small space when being folded, and therefore the optical fiber is limited to be used for limiting an optical fiber sample to be tightly attached to the top of a macro-bending sliding table board in the. The optical fiber anti-hanging plate is a sheet metal part and is positioned in front of the optical fiber holding air claw and can be used for preventing an optical fiber sample from being hooked and hung.
The feeding mechanism is positioned in front of the macro-bending sliding table and consists of an electric cylinder, a linear guide rail, an adapter plate and a drag chain. Under the action of the electric cylinder, the fiber stroking mechanism is driven to do horizontal linear motion, and the device can be used for recovering and maintaining the posture of an optical fiber sample before and after bending test.
In the embodiment, the centers of all the air claws are coaxial with the optical fiber samples on the optical fiber clamp, and the fingers of the air claws can be opened and closed at 180 degrees. The silica gel material finger is all installed to press from both sides fine finger, through adjusting pressure and velocity of flow size, can be used to alleviate clamping-force damage optical fiber sample. The air claw is provided with a height adjusting plate which can be used for supporting an optical fiber sample.
In this embodiment, the lifting mechanism and the traversing mechanism are provided with an electric/pneumatic servo system, and program control is performed according to signals of the PLC control system and feedback of the sensor. The signal lamp is provided with a red/yellow/green three-color indicator lamp which can be used for prompting the idle/working/fault state of the equipment.
Example 3
The optical fiber looping device of the embodiment 1 or the embodiment 2 is applied to automatically test the bending loss of the optical fiber, and comprises the following steps:
1. preparation phase
And after receiving the origin point returning instruction, self-checking signals of the sensors of the servo systems.
The transverse moving mechanism moves under the drive of a servo motor until the center of an arc table top with a cut-off wavelength is aligned with the center of testing equipment, the lifting mechanism moves to an upper limit position under the drive of an air cylinder, namely the upper surface of the arc table top for testing the cut-off wavelength is aligned with a placing surface of an optical fiber clamp, the looper mechanism moves the macro-bending sliding table to a left limit position under the drive of the air cylinder, the center distance of each group of column ring guide wheels on the moving sliding table and the fixed sliding table of the double-layer sliding table is the maximum at the moment, all air claws of the fiber stroking mechanism are opened, and the feeding mechanism returns to the original.
And clamping the optical fiber clamp at two ends of the optical fiber sample, and putting the optical fiber clamp into an logistics line carrier as shown in figure 8.
In order to prevent the optical fiber clamp from moving, a magnet is arranged below the mounting position of the optical fiber clamp on the logistics line carrier.
2. Cut-off wavelength mode
After receiving a task instruction, the mechanical arm grabs the optical fiber clamp, and lifts the optical fiber clamp and the optical fiber sample to a certain height until the tail fiber of the optical fiber sample can be horizontally passed through the fiber smoothing mechanism, after the fiber smoothing mechanism is arranged above the optical fiber clamp, the mechanical arm is lowered to a certain height between the optical fiber clamp and the arc-shaped cut-off wavelength table board, at the moment, the tail fiber is positioned between the fiber smoothing mechanism and the arc-shaped cut-off wavelength table board, the mechanical arm continues to horizontally move to pass through the upper part of the arc-shaped cut-off wavelength table board, finally, the optical fiber clamp is conveyed to an optical fiber clamp placing block of an optical fiber clamp placing surface of the testing equipment, the mechanical arm is lifted to a waiting.
When the PLC receives a signal that the manipulator is placed and fed back, the testing equipment starts testing and uploads a result to the server.
In order to prevent the optical fiber clamp from moving, a magnet is arranged at the optical fiber clamp placing face block of the testing equipment.
3. Macrobend mode
After receiving the task instruction, the manipulator snatchs fiber fixture, and promote fiber fixture to optic fibre and prevent that link plate top take the altitude to pass through optic fibre through to fiber fixture can the level and prevent the link plate, continue horizontal migration through embracing fine finger, PLC receives the position signal of manipulator feedback this moment, trigger and embrace fine finger action, it is spacing at height and width direction with the optic fibre sample, then fiber fixture and fiber sample loop through optic fibre and prevent pressing from both sides fine finger on the link plate, the arc mesa, the fine finger of clamp in face the place the face, send fiber fixture to fiber fixture at last on placing the face, the manipulator rises to waiting position.
When the PLC receives a signal that the manipulator finishes feeding back, the fiber clamping finger is triggered to act to clamp the optical fiber sample, and the optical fiber sample is accurately limited at the moment.
And then the lifting mechanism moves to a lower limit position under the driving of the cylinder, the transverse moving mechanism moves the macrobend sliding table under the driving of the servo motor until a central plane between a pair of column ring guide wheels on the moving and fixed sliding tables of the double-layer sliding table is coplanar with the axis of the optical fiber sample, the lifting mechanism moves to an upper limit position under the driving of the cylinder, and the transverse moving mechanism moves slightly to the state that the optical fiber sample is tangent to the macrobend fixed sliding table column ring guide wheels under the driving of the servo motor.
Then, the looper mechanism moves the macro-bending sliding table to a right limit position under the driving of the cylinder, and the centers of all the column ring guide wheels on the macro-bending sliding table and the fixed sliding table are coplanar, so that the bending of the optical fiber sample is completed, and meanwhile, the feeding mechanism drives the tail fiber of the optical fiber sample on the fiber clamping air claw to translate at a certain distance under the driving of the electric cylinder, so that the tail fiber is not broken in the bending process of the optical fiber sample, and meanwhile, the optical fiber sample can recover to the posture before bending, and the requirement of automatically completing the test of various performance parameters by one section of optical fiber sample can be met.
When the PLC receives a signal that the action of the looping mechanism is finished, the testing equipment starts testing and uploads a result to the server.
When more bending loss tests need to be continued in the macrobending mode, in particular,
the looper mechanism moves the macro-bending sliding table to a left limit position under the driving of the cylinder, the center distance of each group of column ring guide wheels on the macro-bending sliding table and the fixed sliding table is the largest at the moment, then the lifting mechanism moves to a lower limit position under the driving of the cylinder, the feeding mechanism drives the tail fiber of the optical fiber sample on the fiber clamping gas claw to return to a stroke original point under the driving of the electric cylinder, and at the moment, the optical fiber sample is restored to the posture before bending.
The transverse moving mechanism moves the macrobend sliding table under the drive of the servo motor until the central plane between the macrobend sliding table and the other pair of column ring guide wheels on the fixed sliding table is coplanar with the axis of the optical fiber sample, the lifting mechanism moves to the upper limit position under the drive of the cylinder, and the transverse moving mechanism slightly moves to the position where the optical fiber sample is tangent to the macrobend fixed sliding table column ring guide wheels under the drive of the servo motor.
And then the looper mechanism moves the macro-bending sliding table to a right limit position under the driving of the cylinder, meanwhile, the feeding mechanism drives the tail fiber of the optical fiber sample on the fiber clamping finger to perform corresponding distance translation under the driving of the electric cylinder, and when the PLC receives a signal that the action of the looper mechanism is finished, the test equipment starts to test and uploads a result to the server.
4. Mode switching
According to the test requirements, two modes of macrobending and cutoff wavelength are required to be tested, after the test of one mode is completed according to the two mode flows, the optical fiber clamp and the optical fiber sample on the test equipment are taken out of the test equipment by the mechanical arm, the triaxial mechanical arm is lifted to the position where the tail fiber of the optical fiber sample can pass through the fiber stroking mechanism, the optical fiber clamp and the optical fiber sample are taken back to the original point of the mechanical arm, and the test of the other mode is continuously performed according to the mode flow.
5. Recovering
When the test result is uploaded to the server and no other test task is available, the mechanical arm receives a PLC instruction, the optical fiber clamp and the optical fiber sample on the test equipment are taken out of the test equipment, the mechanical arm rises to the position that the tail fiber of the optical fiber sample can pass through the fiber stroking mechanism, the optical fiber clamp and the optical fiber sample are driven to return to the origin of the three-axis mechanical arm, and the optical fiber clamp is placed into a logistics line carrier and is recovered.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An optical fiber looping device is characterized by comprising an optical fiber clamp placing surface, an arc-shaped table top and a double-layer sliding table, wherein the optical fiber clamp placing surface is arranged side by side, and the arc-shaped table top and the double-layer sliding table horizontally move along the side edge of the optical fiber clamp placing surface;
one end of the arc table top is as high as the clamp placing surface and is provided with an arc surface with a downward bending preset diameter, and the arc table top is used for enabling the optical fiber sample to form an optical fiber bending with the preset diameter along the surface of the optical fiber sample in a plane vertical to the side edge of the optical fiber clamp placing surface;
the double-layer sliding table is provided with an upper sliding table and a lower sliding table which are vertically overlapped and relatively slide, and the upper sliding table is provided with a long hole along the relative movement direction of the upper sliding table and the lower sliding table; the lower sliding table is provided with a column ring guide wheel which penetrates through the long hole; the upper sliding table is provided with a column ring guide wheel which is matched with the column ring guide wheel of the lower sliding table; when the upper sliding table and the lower sliding table slide relatively, the column ring guide wheel of the lower sliding table slides along the long hole and is separated from or staggered with the column ring guide wheel of the corresponding upper sliding table; when the column ring guide wheel of the lower sliding table is separated from the column ring guide wheel of the upper sliding table, a channel through which optical fibers pass linearly is formed, and when the column ring guide wheel of the lower sliding table is staggered with the column ring guide wheel of the upper sliding table, a semi-circular channel with a preset number is formed, so that optical fiber samples form optical fiber bends with preset number and preset specification in a horizontal plane.
2. The optical fiber looping device according to claim 1, wherein the arc-shaped table top comprises a plurality of arc-shaped surfaces with preset curvatures, and the arc-shaped table top rotates around the shaft to enable the arc-shaped surfaces with different curvatures to be spliced with the optical fiber clamp placing surface for forming optical fiber bends with different preset diameters.
3. The optical fiber looping device according to claim 1, wherein a lifting mechanism is arranged below the arc-shaped table surface and/or the double-layer sliding table; preferably, the column ring guide has a rounded top, and more preferably, a bearing is installed therein for rotating the column ring guide in a circumferential direction.
4. The optical fiber looping device according to claim 1, wherein the optical fiber clamp placing face has an optical fiber clamp placing block matching with the shape of the optical fiber clamp, fixing the optical fiber clamp; the column ring guide wheel of the upper sliding table of the double-layer sliding table and the column ring guide wheel of the lower sliding table matched with the upper sliding table comprise a plurality of column ring guide wheel series with specific diameters, wherein each column ring guide wheel series is provided with column ring guide wheel sets, the number of the column ring guide wheel series is the same as that of the optical fiber clamp placing blocks, and the distance of the column ring guide wheel series is matched with that of the optical fiber clamp placing blocks.
5. The optical fiber looping device according to claim 4, comprising a fiber smoothing mechanism arranged opposite to the optical fiber clamp placing surface, wherein the fiber smoothing mechanism comprises an optical fiber hanging prevention plate parallel and opposite to the optical fiber clamp placing surface, and air claws arranged on the optical fiber hanging prevention plate, the number of optical fiber clamp placing blocks is the same, and the intervals of the air claws are matched with the intervals of the optical fiber clamp placing blocks.
6. The optical fiber looping device according to claim 5, wherein the air gripper comprises a fiber clamping finger and a fiber holding finger, the fiber clamping finger is used for clamping the optical fiber so as to accurately fix the position of the optical fiber, and the fiber holding finger forms a small space when being folded so as to limit the optical fiber within the working range of the fiber clamping finger.
7. The optical fiber looping device according to claim 5, comprising a feeding mechanism, wherein the fiber smoothing mechanism is arranged on the feeding mechanism, and the feeding mechanism is used for driving the fiber smoothing mechanism to be close to or far away from the optical fiber clamp placing surface so as to match the bent or straightened state of the optical fiber sample in a horizontal plane.
8. The optical fiber looping device according to claim 1, comprising an optical fiber moving mechanism for passing or avoiding the fiber stroking mechanism equipped with the optical fiber clamp in a preset way and placing or removing the optical fiber clamp on the placing surface of the optical fiber clamp;
the optical fiber movement mechanism is preferably a three-axis gantry manipulator which is erected above the optical fiber clamp placing table-board, the arc table-board, the double-layer sliding table and the fiber smoothing mechanism, and the tail end of the optical fiber movement mechanism is provided with a gripper matched with an optical fiber sample clamp and the optical fiber clamp used for grabbing, carrying and placing an optical fiber sample.
9. The automatic bending loss testing method using the optical fiber looping device according to claims 1 to 8, characterized by comprising a cut-off wavelength mode and/or a macrobend mode;
when in a cut-off wavelength mode, the clamp of the optical fiber sample provided with the clamp is placed at a corresponding position of the placing surface of the optical fiber clamp; the arc table top moves to be flush with the placing surface of the optical fiber clamp; the optical fiber sample is arranged in a plane vertical to the side edge of the placing surface of the optical fiber clamp
When the optical fiber sample is in a macrobending mode, the clamp of the optical fiber sample provided with the clamp is placed at a corresponding position of the placing surface of the optical fiber clamp through a fiber stroking device, so that the optical fiber sample is fixed in a horizontal plane; the double-layer sliding table moves to the front of the placing surface of the optical fiber clamp, the column ring guide wheel of the double-layer sliding table penetrates through the optical fiber from bottom to top, and the double-layer sliding table moves to the place surface of the optical fiber clamp to be flush, so that the optical fiber is positioned in a channel through which the optical fiber linearly passes, wherein the channel is formed by a group of lower sliding table column ring guide wheels with preset diameters and upper sliding table column ring guide wheels; the upper sliding table and the lower sliding table of the double-layer sliding table move relatively, and a group of lower sliding table column ring guide wheels with preset diameters and upper sliding table column ring guide wheels matched with the lower sliding table column ring guide wheels form semicircular channels with preset numbers, so that optical fiber samples form optical fiber bends with preset numbers and preset specifications in a horizontal plane.
10. The method for automatically testing bending loss of an optical fiber looping device according to claim 9, wherein the optical fiber sample is continuously tested in a cutoff wavelength mode and a macrobend mode with different diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799562.2A CN111929031B (en) | 2020-08-11 | 2020-08-11 | Optical fiber looping device and automatic bending loss testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799562.2A CN111929031B (en) | 2020-08-11 | 2020-08-11 | Optical fiber looping device and automatic bending loss testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111929031A true CN111929031A (en) | 2020-11-13 |
| CN111929031B CN111929031B (en) | 2021-10-01 |
Family
ID=73307466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010799562.2A Active CN111929031B (en) | 2020-08-11 | 2020-08-11 | Optical fiber looping device and automatic bending loss testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111929031B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112850348A (en) * | 2021-01-04 | 2021-05-28 | 长飞光纤光缆股份有限公司 | Loop device for single-mode optical fiber and polarization maintaining optical fiber and cut-off wavelength testing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458217A (en) * | 2014-12-31 | 2015-03-25 | 上海电缆研究所 | Method for synchronously measuring attenuation coefficient and cut-off wavelength of optical fiber |
| CN105938042A (en) * | 2015-03-05 | 2016-09-14 | 光动有限公司 | Systems and methods for testing optical fiber |
| EP3346250A1 (en) * | 2017-01-06 | 2018-07-11 | Sterlite Technologies Ltd | Method and system for differentiating macro-bend losses from splice and connector losses in fiber-optic links |
| CN109596322A (en) * | 2018-12-28 | 2019-04-09 | 中天科技光纤有限公司 | Test fixture, test macro and its application method |
| CN109883651A (en) * | 2019-03-26 | 2019-06-14 | 长飞光纤光缆股份有限公司 | A kind of automatically testing platform for the test of short section optical fiber parameter |
| CN110426184A (en) * | 2019-07-31 | 2019-11-08 | 杭州永特信息技术有限公司 | A kind of efficiently convenient optical fiber macrobending loss test device and test method |
-
2020
- 2020-08-11 CN CN202010799562.2A patent/CN111929031B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458217A (en) * | 2014-12-31 | 2015-03-25 | 上海电缆研究所 | Method for synchronously measuring attenuation coefficient and cut-off wavelength of optical fiber |
| CN105938042A (en) * | 2015-03-05 | 2016-09-14 | 光动有限公司 | Systems and methods for testing optical fiber |
| EP3346250A1 (en) * | 2017-01-06 | 2018-07-11 | Sterlite Technologies Ltd | Method and system for differentiating macro-bend losses from splice and connector losses in fiber-optic links |
| CN109596322A (en) * | 2018-12-28 | 2019-04-09 | 中天科技光纤有限公司 | Test fixture, test macro and its application method |
| CN109883651A (en) * | 2019-03-26 | 2019-06-14 | 长飞光纤光缆股份有限公司 | A kind of automatically testing platform for the test of short section optical fiber parameter |
| CN110426184A (en) * | 2019-07-31 | 2019-11-08 | 杭州永特信息技术有限公司 | A kind of efficiently convenient optical fiber macrobending loss test device and test method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112850348A (en) * | 2021-01-04 | 2021-05-28 | 长飞光纤光缆股份有限公司 | Loop device for single-mode optical fiber and polarization maintaining optical fiber and cut-off wavelength testing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111929031B (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103935801B (en) | A kind of plastic pipe automatic winding equipment | |
| CN112109966B (en) | Blood taking needle material taking and distance changing device | |
| CN107470900B (en) | Middle-end assembly machine of automatic fuel pump assembly line and operation method thereof | |
| CN116500423B (en) | Chip pin open-short circuit test system and open-short circuit test method | |
| CN211905130U (en) | Screen alignment lighting detection device | |
| CN111929031B (en) | Optical fiber looping device and automatic bending loss testing method | |
| CN109205222A (en) | A kind of material transmitting device and method | |
| CN111924512A (en) | Optical module detection device | |
| CN113909869B (en) | System and method for withdrawing threaded ring of oil pressure shock absorber of motor train unit | |
| CN110281002A (en) | Automobile front suspension bolt fastening equipment and working method | |
| CN107203729A (en) | A kind of matrix form automatic bar code identifying system and its recognition methods | |
| CN107656517B (en) | Automatic detection device of controller | |
| CN114161461A (en) | Clamp for square battery module | |
| CN220031227U (en) | Selective four-head hot riveting equipment | |
| CN203820127U (en) | Automatic winding equipment applicable to plastic pipe production | |
| CN207442664U (en) | Full Automatic Rotor | |
| CN216505217U (en) | Clamp for square battery module | |
| CN112935841B (en) | Assembly line type automatic drilling and riveting system based on module transfer station in groups | |
| CN113999081A (en) | Low-impact high-reliability counterweight type automatic explosive pressing device for initiating explosive device | |
| CN105572552B (en) | A kind of off-line type high-voltage capacitor test method and its test macro | |
| CN219212214U (en) | Multi-station PCB assembly wire locking equipment | |
| CN221391829U (en) | Automatic hot melting device for thermoplastic pipe | |
| CN219380491U (en) | Positioning and clamping device for irregular workpiece assembly | |
| CN208868859U (en) | Flange conveying and transferring device | |
| CN220170528U (en) | Engine detection table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240202 Address after: 300000 Tianjin Binhai New Area Huayuan Industrial Zone (Outer Ring) Haitai Chuangxin 5th Road 6 Patentee after: Changfei fiber optic cable (Tianjin) Co.,Ltd. Country or region after: China Address before: No.9, Guanggu Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430074 Patentee before: YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |