CN115231815A - High-temperature rod-changing centering system for optical fiber preform, wire-drawing processing system and method - Google Patents
High-temperature rod-changing centering system for optical fiber preform, wire-drawing processing system and method Download PDFInfo
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- CN115231815A CN115231815A CN202210943143.0A CN202210943143A CN115231815A CN 115231815 A CN115231815 A CN 115231815A CN 202210943143 A CN202210943143 A CN 202210943143A CN 115231815 A CN115231815 A CN 115231815A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/022—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres, undulated fibres, fibres presenting a rough surface
- C03B37/023—Fibres composed of different sorts of glass, e.g. glass optical fibres, made by the double crucible technique
- C03B37/0235—Thermal treatment of the fibre during the drawing process, e.g. cooling
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/03—Drawing means, e.g. drawing drums ; Traction or tensioning devices
- C03B37/032—Drawing means, e.g. drawing drums ; Traction or tensioning devices for glass optical fibres
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention discloses a high-temperature rod replacement centering system, a wire drawing processing system and a method for an optical fiber preform rod, and relates to the field of wire drawing processing. The centering system comprises a hanging rod platform and a centering device. In the rod hanging platform, the rod hanging device is connected to the bottom of the three-axis direction displacement platform and used for hanging the optical fiber perform rod. Centering device is located the below of hanging excellent platform, centering device includes furnace eye closing cap board and the cylindric centering section of thick bamboo that has open-top, the furnace eye closing cap board is including closing cap board, upper ring plate and lower crown plate, peg graft and be fixed in the upper ring plate to the bottom of centering section of thick bamboo, the axial lead collineation of upper ring plate and lower crown plate just extends along vertical direction, lower crown plate is used for dismantling to cup joint the wire drawing stove fire door that is fixed in the wire drawing stove, under the cup joint state, lower crown plate, the furnace of wire drawing stove is with the axle center state, closing cap board closing cap wire drawing stove fire door. The centering system can improve the concentricity of the preform rod and the hearth of the wire-drawing furnace and reduce the cost.
Description
Technical Field
The invention relates to the technical field of wire drawing processing, in particular to a high-temperature rod replacement centering system for an optical fiber preform, a wire drawing processing system and a wire drawing processing method.
Background
The optical fiber preform is melted in a drawing furnace and drawn down by gravity to form an optical fiber. During the fiber drawing process, the temperature in the drawing furnace can reach over 2000 ℃, and at the temperature, graphite parts, quartz parts of the prefabricated rod and other impurity components in the drawing furnace can react to generate various types of deposits.
And in the conventional production process, an optical fiber preform replacing process is involved. During the replacement process, a new optical fiber preform is required to be aligned with the furnace opening. In the prior art, an image processing system is adopted, alignment is adjusted by acquiring a prefabricated rod and a furnace mouth position image, however, the temperature in the furnace reaches more than 2000 ℃, the temperature of the furnace mouth is more 100 ℃, the image processing system can be unstable in a high-temperature field, and a large signal-to-noise ratio is easy to generate, so that the problems of unclear collected images and the like are caused, the condition that the prefabricated rod and a furnace chamber of a wire drawing furnace are not concentric is caused, the problem of eccentricity is caused during optical fiber wire drawing, and the cost is high.
Therefore, how to reduce the cost while improving the concentricity of the optical fiber preform and the hearth of the drawing furnace is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a high temperature rod-changing centering system for an optical fiber preform, which can improve the concentricity between the optical fiber preform and a furnace chamber of a drawing furnace and reduce the cost. The invention also aims to provide a fiber preform drawing processing system and a fiber preform drawing processing method applying the fiber preform high-temperature rod-changing centering system, and the fiber preform drawing processing system and the fiber preform drawing processing method can improve the concentricity of the fiber preform and a furnace hearth of a drawing furnace and reduce the cost at the same time.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-temperature rod-changing centering system for an optical fiber preform comprises a rod hanging platform and a centering device;
the optical fiber preform rod lifting device comprises a lifting rod device and a three-axis direction displacement platform, wherein the lifting rod device is connected to the bottom of the three-axis direction displacement platform and used for lifting an optical fiber preform rod, the three-axis direction displacement platform is used for driving the lifting rod device to move along an X axis, a Y axis and a Z axis, the Z axis is in a vertical direction, and the X axis, the Y axis and the Z axis are perpendicular to each other in pairs;
centering device is located hang the below of excellent platform, centering device includes furnace mouth closing cap board and the cylindric centering section of thick bamboo that has open-top, the furnace mouth closing cap board is including the closing cap board, is fixed in the last crown plate of closing cap board top with be fixed in the lower crown plate of closing cap board below, peg graft in the bottom of centering section of thick bamboo and be fixed in go up the crown plate, a centering section of thick bamboo go up the crown plate with the axial lead collineation of crown plate just extends along vertical direction down, the crown plate is used for can dismantling to cup joint the wire drawing furnace fire door that is fixed in the wire drawing furnace down, and under the cup joint state, down the crown plate the furnace of wire drawing furnace is with the axle center state, the closing cap board closing cap the wire drawing furnace fire door.
Preferably, the centering cylinder is an annular cylinder body which penetrates through the centering cylinder from top to bottom, the centering cylinder is detachably fixed on the upper ring plate, and the top of the centering cylinder protrudes upwards from the upper ring plate.
Preferably, still include hand-held type sealing plate, the fire door closing plate follow under the state that the wire drawing furnace fire door was pulled down, hand-held type sealing plate can be covered wire drawing furnace fire door top, hand-held type sealing plate has the stick tail groove that runs through along vertical direction, just the stick tail groove has to set up in the side direction notch of hand-held type sealing plate.
A fiber preform drawing processing system comprises a drawing furnace and a high-temperature rod changing and centering system for the fiber preform; the wire drawing furnace comprises a furnace body and a wire drawing furnace fire hole arranged at the top of the furnace body, and the wire drawing furnace fire hole is also provided with an air seal water cooling device.
Preferably, the rod unloading device comprises a trolley and a rod unloading barrel fixed on the trolley, and the rod unloading barrel is provided with a top opening.
A fiber preform drawing processing method applies a high-temperature rod replacing and centering system of the optical fiber preform, the method comprises a high-temperature rod replacing and centering step, and the high-temperature rod replacing and centering step comprises the following steps:
mounting the centering device on the top of a furnace mouth of a wire drawing furnace of the wire drawing furnace, and mounting an optical fiber preform on the rod hanging device;
controlling the three-axis direction displacement platform to adjust the position of the rod hanging device along the X axis and/or the Y axis so that the optical fiber perform rod can enter the centering barrel downwards, and the deviation of the axial leads of the optical fiber perform rod and the centering barrel is within a set range;
and controlling the three-axis direction displacement platform to move downwards along the Z axis to enable the bottom end of the optical fiber perform rod to extend into the centering cylinder.
Preferably, after the high-temperature rod replacement centering step, a rod throwing step is further included;
the rod throwing step comprises:
controlling the three-axis direction displacement platform to move the rod hanging device upwards along the Z axis so that the bottom end of the optical fiber preform is positioned above the centering cylinder;
detaching the centering cylinder from the centering device, controlling the three-axis direction displacement platform to move the rod hanging device downwards along the Z axis, and enabling the optical fiber preform rod to move downwards for a certain distance and stop above the furnace opening cover plate;
detaching the furnace mouth sealing cover plate from the wire drawing furnace mouth;
and controlling the three-axis direction displacement platform to continuously move down the rod hanging device along the Z axis so that the optical fiber preform rod enters the furnace mouth of the wire drawing furnace.
Preferably, after the furnace opening sealing cover plate is detached from the furnace opening of the drawing furnace, the method for controlling the three-axis direction displacement platform to continuously move down the rod hanging device along the Z axis so that the optical fiber preform rod enters the furnace opening of the drawing furnace further comprises:
covering a handheld sealing plate on the furnace mouth of the wire drawing furnace, wherein the handheld sealing plate is provided with a rod tail groove which penetrates through the handheld sealing plate along the vertical direction, the rod tail groove is provided with a lateral notch which is formed in the side surface of the handheld sealing plate, and after the handheld sealing plate is covered, at least part of the rod tail groove is communicated with the furnace mouth of the wire drawing furnace along the vertical direction;
controlling the three-axis direction displacement platform to continuously move down the rod hanging device along the Z axis until the bottom end of the optical fiber preform rod contacts the rod tail groove;
and moving the handheld sealing plate to separate the optical fiber preform rod from the rod tail groove from the lateral notch, and taking down the handheld sealing plate from the furnace mouth of the wire drawing furnace.
Preferably, after the high-temperature rod replacement centering step, the method further comprises a rod throwing step, a furnace production step and a furnace discharging step in sequence;
the discharging step comprises the following steps:
controlling the three-axis direction displacement platform to start moving up the rod hanging device along the Z axis, and simultaneously covering a handheld sealing plate on the furnace mouth of the wire drawing furnace, wherein the handheld sealing plate is provided with a rod tail groove penetrating along the vertical direction, the rod tail groove is provided with a lateral notch formed in the side surface of the handheld sealing plate, and the optical fiber preform rod enters the rod tail groove through the lateral notch;
and when the bottom end of the optical fiber preform is higher than the furnace mouth of the wire drawing furnace by a set distance, taking down the handheld sealing plate, and covering the furnace mouth sealing cover plate on the furnace mouth of the wire drawing furnace.
Preferably, after the high-temperature rod replacement centering step, the method further comprises a rod throwing step, a furnace production step, a furnace discharging step and a rod unloading step in sequence;
after the step of discharging, the optical fiber perform rod is positioned above a furnace mouth of the wire drawing furnace;
the rod unloading step comprises:
controlling the three-axis direction displacement platform to adjust the position of the rod hanging device along the X axis and/or the Y axis so that the rod hanging device moves to the position above a rod unloading cylinder of the rod unloading device;
controlling the three-axis direction displacement platform to move the rod hanging device downwards along the Z axis until the bottom end of the optical fiber preform rod contacts the rod unloading cylinder;
and detaching the optical fiber preform from the rod hanging device, so that the optical fiber preform falls into the rod detaching cylinder by means of self weight.
The invention provides a high-temperature rod-changing centering system for an optical fiber preform, which comprises a rod hanging platform and a centering device.
The rod lifting platform comprises a rod lifting device and a three-axis direction displacement platform, the rod lifting device is connected to the bottom of the three-axis direction displacement platform and used for lifting the optical fiber perform, the three-axis direction displacement platform is used for driving the rod lifting device to move along an X axis, a Y axis and a Z axis, the Z axis is vertical, and the X axis, the Y axis and the Z axis are perpendicular to each other.
Centering device is located the below of hanging excellent platform, centering device includes furnace eye closing cap board and the cylindric centering section of thick bamboo that has open-top, the furnace eye closing cap board is including the closing cap board, be fixed in the last crown plate of closing cap board top and be fixed in the lower crown plate of closing cap board below, peg graft and be fixed in the last crown plate to the bottom of centering section of thick bamboo, the axial lead collineation of going up crown plate and lower crown plate just extends along vertical direction, lower crown plate is used for dismantling the wire drawing stove fire door that cup joints and be fixed in the wire drawing stove, and under the cup joint state, lower crown plate, the furnace of wire drawing stove is with the axle center state, closing cap board closing cap wire drawing stove fire door.
And in the centering process, the three-axis direction displacement platform is controlled to adjust the position of the rod hanging device along the X axis and/or the Y axis so that the optical fiber perform is aligned with the axis of the centering cylinder, and then the rod hanging device is moved downwards along the Z axis by using the three-axis direction displacement platform so that the bottom end of the optical fiber perform extends into the centering cylinder to realize centering. The device has a simple structure, the triaxial displacement platform and the centering device are not influenced by high temperature, the influence of a high-temperature field on the rod replacing device when the rods are replaced at high temperature can be avoided, and the cost can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a front view of an embodiment of a high temperature rod-changing centering system for an optical fiber preform according to the present invention;
FIG. 2 is a partial cross-sectional view of a furnace opening sealing cover plate in an embodiment of the high temperature rod replacement centering system for an optical fiber preform according to the present invention;
FIG. 3 is a structural diagram of a handheld sealing plate in an embodiment of a high temperature rod-changing centering system for an optical fiber preform according to the present invention;
fig. 4 is a structural diagram of a rod unloading device in an embodiment of a high temperature rod replacing and centering system for an optical fiber preform rod provided by the present invention.
Reference numerals:
a three-axis direction displacement platform 1, an X-axis direction displacement platform 11, a Y-axis direction displacement platform 12 and a Z-axis direction displacement platform 13;
the hanging rod device 2, the hanging rod arm 21, the hanging rod clamping cylinder 22 and the tail handle fixer 23;
the rod unloading device 3, the cart 31 and the rod unloading barrel 32;
an optical fiber preform 4;
a centering cylinder 5;
a furnace mouth sealing cover plate 6, a sealing cover plate 61, an upper ring plate 62 and a lower ring plate 63;
a wire drawing furnace 7 with a furnace mouth 71;
the air-seal water cooling device 8, an air inlet 81, an air outlet 82, a water inlet 83 and a water outlet 84;
a hand-held sealing plate 9, a sealing plate 91, a handle 92 and a rod tail groove 93.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The core of the invention is to provide a high-temperature rod-changing centering system for an optical fiber preform, which can improve the concentricity of the optical fiber preform and a hearth of a wire-drawing furnace and reduce the cost. The invention also provides a fiber-drawing processing system and a fiber-drawing processing method which apply the fiber-drawing preform high-temperature rod-changing centering system, and the fiber-drawing processing system and the fiber-drawing processing method can improve the concentricity of the fiber-drawing preform and a furnace hearth of a fiber-drawing furnace and reduce the cost at the same time.
Referring to fig. 1 to 4, a first embodiment of a high temperature rod-changing centering system for an optical fiber preform according to the present invention includes a rod-hanging platform and a centering device.
The hanging rod platform comprises a hanging rod device 2 and a three-axis direction displacement platform 1, wherein the three-axis direction displacement platform 1 specifically comprises an X-axis direction displacement platform 11, a Y-axis direction displacement platform 12 and a Z-axis direction displacement platform 13, and loads are driven along an X axis, a Y axis and a Z axis in sequence. The X axis, the Y axis, and the Z axis are perpendicular to each other, the Z axis is vertical, usually, the top surface of the furnace mouth 71 of the wire drawing furnace is horizontally disposed, and the axis of the wire drawing furnace 7 is vertically disposed.
Hang excellent device 2 and connect in the bottom of triaxial direction displacement platform 1, hang excellent device 2 and be used for hoisting optical fiber perform 4, triaxial direction displacement platform 1 is used for driving and hangs excellent device 2 and remove along X axle, Y axle, Z axle. Specifically, as shown in fig. 1, the boom apparatus 2 includes a boom arm 21, a boom cartridge 22, and a shank holder 23. The hanging rod arm 21 and the hanging rod clamping cylinder 22 are of an integral structure, and the hanging rod clamping cylinder 22 is positioned below the hanging rod arm 21. The tail handle holder 23 is provided on the hanging rod clamping cylinder 22 for holding the optical fiber preform 4.
The centering device is positioned below the hanging rod platform and comprises a furnace mouth sealing cover plate 6 and a centering barrel 5.
The centering cylinder 5 has a cylindrical structure with an open top. In particular, the centring drum 5 is a quartz cylinder, the height of which may be in particular 1 metre.
The furnace opening sealing plate 6 includes a sealing plate 61, an upper ring plate 62 fixed above the sealing plate 61, and a lower ring plate 63 fixed below the sealing plate 61. The furnace-mouth closing plate 6 may be a quartz plate.
The bottom end of the centering cylinder 5 is inserted and fixed on the upper ring plate 62, and the axial leads of the centering cylinder 5, the upper ring plate 62 and the lower ring plate 63 are collinear and extend along the vertical direction. Specifically, as shown in fig. 2, the inner periphery of the upper ring plate 62 is a stepped surface facing upward, and is specifically composed of two concentric rings, and the lower ring diameter is smaller than the upper ring diameter, so that a stepped surface is formed between the two rings. The centering cylinder 5 can be installed on the step surface, the outer peripheral surface of the centering cylinder 5 can be attached to the upper ring along the radial direction, so that the centering relation between the upper ring plate 62 and the centering cylinder 5 is accurately defined, and the centering cylinder 5 can be stably positioned right above the sealing cover plate 61.
The lower ring plate 63 is used for detachably sleeving and fixing a furnace mouth 71 of the wire-drawing furnace 7, and in a sleeved state, the lower ring plate 63 and a hearth of the wire-drawing furnace 7 are in a coaxial state, and the cover plate 61 covers the furnace mouth 71 of the wire-drawing furnace. Preferably, the bottom end of the inner circumferential surface of the lower ring plate 63 may be provided with a chamfer to prevent the lower ring plate 63 or the edge from being worn during the process of sleeving the lower ring plate 63 on the furnace mouth 71 of the drawing furnace 7.
Before the optical fiber perform 4 and the wire-drawing furnace 7 are centered, the centering device is arranged at the top of a furnace mouth 71 of the wire-drawing furnace 7, so that air is prevented from entering the wire-drawing furnace 7 in the high-temperature rod changing process of the optical fiber perform 4, and the upper sealing cover ring plate 62 is coaxially sleeved and fixed on the furnace mouth 71 of the wire-drawing furnace, so that the centering cylinder 5 and a hearth of the wire-drawing furnace 7 are coaxially arranged; the top end of the optical fiber preform 4 is connected to the bottom end of the rod hanger 2 so that the optical fiber preform 4 can be synchronously lifted and lowered by the rod hanger 2.
In the centering process, the three-axis direction displacement platform 1 is controlled to adjust the position of the rod hanging device 2 along the X axis and/or the Y axis, so that the optical fiber perform rod is aligned with the axis of the centering cylinder 5, and then the rod hanging device 2 moves downwards along the Z axis by utilizing the three-axis direction displacement platform 1, so that the bottom end of the optical fiber perform rod extends into the centering cylinder 5, and centering is realized. Specifically, the coordinates of the axial line of the centering cylinder 5 may be prestored in the control device, and the three-axis direction displacement table 1 adjusts the position of the optical fiber preform 4 by means of the prestored coordinates.
In addition, for the check centering effect, can further fine tuning optical fiber perform in X axle, Y epaxial position through the relation of the bottom of observing and optical fiber perform 4 and centering tube 5 to further guarantee optical fiber perform 4 and centering tube 5's concentricity, thereby can guarantee optical fiber perform 4 and the concentricity of drawing furnace 7 furnace.
In addition, the device is simple in structure, the triaxial displacement platform and the centering device are not influenced by high temperature, the influence of a high-temperature field on the rod replacing device during high-temperature rod replacement can be avoided, and the cost can be reduced.
Further, as shown in fig. 1, the centering tube 5 is an annular cylinder body penetrating up and down, the centering tube 5 is detachably fixed on the upper ring plate 62, and the top of the centering tube 5 protrudes upwards from the upper ring plate 62.
Because the centering cylinder 5 is detachably connected with the furnace mouth sealing cover plate 6, after the optical fiber perform 4 is centered, in the process of throwing rods into the drawing furnace 7, the centering cylinder 5 can be detached firstly, but the furnace mouth sealing cover plate 6 is not taken down from the furnace mouth 71 of the drawing furnace, so that the furnace mouth sealing cover plate 6 still seals the furnace mouth 71 of the drawing furnace, after the optical fiber perform 4 descends to the position closer to the furnace mouth sealing cover plate 6, the furnace mouth sealing cover plate 6 is taken down from the furnace mouth 71 of the drawing furnace, and the sealing time of the drawing furnace 7 can be prolonged.
Further, as shown in fig. 3, the fiber preform rod replacing centering system further comprises a handheld sealing plate 9. The handheld sealing plate 9 can cover the drawing furnace fire hole 71 in a state that the fire hole sealing plate 6 is detached from the drawing furnace fire hole 71. Wherein, hand-held type closing plate 9 has the stick tail groove 93 that runs through along vertical direction, and stick tail groove 93 has the side direction notch of seting up in the side of hand-held type closing plate 9.
When optical fiber perform 4 is processed from wire drawing stove 7 and is accomplished, upwards hoist, the staff can take thermal-insulated gloves, pass the tail point of the 4 excellent tails of optical fiber perform and place on wire drawing stove fire door 71 to stick tail groove 93 of hand-held type closing plate 9, prevent that the air from getting into wire drawing stove 7 to guarantee wire drawing stove 7's leakproofness in a flexible way, and the setting up of stick tail groove 93 makes hand-held type closing plate 9 can not influence moving up of optical fiber perform 4.
As shown in fig. 3, the handheld sealing plate 9 may alternatively include a cylindrical sealing plate 91 and a handle 92 fixed to an outer peripheral surface of the sealing plate 91, which may be integrally formed or welded. The shaft axis of the sealing plate 91 extends in the vertical direction, the handle 92 extends in the radial direction of the sealing plate 91, and the rod tail groove 93 is provided in the sealing plate 91.
Specifically, the rod tail groove 93 is a U-shaped groove, optionally, the U-shaped groove includes two parallel sides and a connecting surface butted between the two parallel sides, the lateral notch is disposed opposite to the connecting surface, and optionally, the width between the two sides is 2cm. Preferably, the edge extending in the up-down direction on the side notch of the rod tail groove 93 is provided with a chamfer of 30 ° to guide the optical fiber preform 4 when it enters the rod tail groove 93.
The excellent centering system is traded to optical fiber perform high temperature that this embodiment provided, including fire door closing cap board 6, centering cylinder 5 and hand-held type closing plate 9, can design according to the site technology, can effectively prevent the oxidation of wire drawing stove 7, when realizing that optical fiber perform 4 high temperature trades the stick, guarantee that optical fiber perform 4 is concentric with wire drawing stove 7, verify many times through actual production, this system makes the interior no oxidation condition of wire drawing stove 7, and the optic fibre of production does not have eccentric state, and simultaneously, centering operation method easy to carry out, can promote and trade excellent in-process personnel operating efficiency at high temperature, external environment can not exert an influence to the system, can realize optical fiber perform 4 centering processes more accurately.
The invention also provides a fiber-drawing processing system of the optical fiber preform, which comprises a fiber-drawing furnace 7 and the high-temperature rod-changing centering system of the optical fiber preform in the embodiment. As shown in FIG. 1, the drawing furnace 7 comprises a furnace body and a drawing furnace mouth 71 arranged at the top of the furnace body, and the drawing furnace mouth 71 is also provided with an air seal water cooling device 8.
Optionally, the gas seal water cooling device 8 comprises an argon gas seal device and a water cooling device. The argon gas seal device comprises an argon gas, a gas flow regulating device, a gas inlet 81, a gas outlet 82 and other structures, the argon gas enters the wire drawing furnace 7 through the gas inlet 81 and leaves the wire drawing furnace 7 from the gas outlet 82, the effect of preventing the air from entering the wire drawing furnace 7 is achieved, and the flow of the argon gas in the wire drawing furnace 7 is detected through the gas flow regulating device. The water cooling device comprises a water inlet 83 and a water outlet 84 which are arranged below the air inlet 81 and the air outlet 82, and cooling water is injected through the water inlet 83 and the water outlet 84 to achieve the effect of cooling the wire drawing furnace 7. In the whole processing process of the optical fiber preform drawing processing system, the argon gas sealing device and the water cooling device can be always in a starting state.
Further, as shown in fig. 4, the optical fiber preform drawing processing system further includes a rod unloading device 3, the rod unloading device 3 includes a cart 31 and a rod unloading cylinder 32 fixed to the cart 31, and the rod unloading cylinder 32 has an open top. Specifically, the rod-discharging cylinder 32 is a hollow cylinder, the bottom of which is sealed and the top of which is open. Alternatively, the cart 31 is a vehicle body movable along the X-axis, Y-axis, and Z-axis.
When unloading the stick, optical fiber perform 4 utilizes triaxial direction displacement platform 1 to move optical fiber perform 4 to the setting unload the stick position, pushes away shallow 31 under optical fiber perform 4 for optical fiber perform 4 with unload a stick section of thick bamboo 32 and infinitely be close in the horizontal direction, at this moment, adjust caudal peduncle fixer 23, optical fiber perform 4 receives the influence of gravity to fall on unloading a stick section of thick bamboo 32, removes and unloads excellent device 3, carries out new optical fiber perform 4 changes on hanging excellent device 2.
Through the setting of unloading excellent device 3, can adjust the position of unloading excellent device 3 in a flexible way, avoid the artificial work load of carrying optical fiber perform 4.
The optical fiber preform wire drawing processing system that this embodiment provided, the theory of operation is as follows:
firstly, the optical fiber prefabricated rod 4 is prepared before rod replacement at high temperature.
The optical fiber preform 4 currently produced is a first preform. After the production of the first preform is completed, the power of the drawing furnace 7 is adjusted to 10%. The argon flow is adjusted to be 50 through the gas flow adjusting device, and the gas flow is increased, so that the furnace mouth 71 of the wire drawing furnace is in a gas seal state, and air is prevented from entering the wire drawing furnace 7. And (3) cutting off the rod tip at the rod tail of the first prefabricated rod at the position of a corresponding pipeline of the wire drawing furnace 7, cleaning a wire drawing channel and ensuring that no optical fiber or impurity residue exists.
And hoisting the first preform away from the furnace mouth 71 of the drawing furnace by using a Z-axis direction displacement table 13 in the adjustable rod hoisting platform. At the moment the first preform is lifted, the heat insulating glove is taken, and the hand-held sealing plate 9 is passed through the tail tip of the rod tail of the first preform and placed on the furnace mouth 71 of the wire drawing furnace to prevent air from entering the wire drawing furnace 7. When the rod tail of the first preform rod is 20cm higher than the furnace mouth 71 of the wire-drawing furnace, the handheld sealing plate 9 is taken down, the furnace mouth sealing plate 6 is placed on the furnace mouth 71 of the wire-drawing furnace, and the lower annular plate 63 of the furnace mouth sealing plate 6 wraps the furnace mouth 71 of the wire-drawing furnace to prevent air from entering the wire-drawing furnace 7.
The rod unloading device 3 is pushed to the lower part of the first preform rod, and the rod unloading is completed by adjusting the tail handle fixer 23 when the rod tail of the first preform rod just contacts the edge of the rod unloading cylinder 32 through the adjustment of the three-axis direction of the trolley 31, and the first preform rod falls in the rod unloading cylinder 32.
And moving the hanging rod clamping cylinder 22 by the Z-axis direction displacement table 13 to be about 5m away from the furnace mouth 71 of the wire drawing furnace, adjusting the tail handle fixer 23 on the hanging rod clamping cylinder 22, and fixing the new optical fiber prefabricated rod 4 on the hanging rod clamping cylinder 22, wherein the new optical fiber prefabricated rod 4 is a second prefabricated rod.
And (II) roughly adjusting the position of the second precast bar.
The X-axis direction displacement stage 11 and the Y-axis direction displacement stage 12 perform zeroing while the second preform is substantially concentric with the drawing furnace 7.
And (III) finely adjusting the position of the second precast rod.
The centering cylinder 5 is placed on a quartz sealing plate 91, the Z-axis direction displacement table 13 is adjusted to downwards and slowly move the second preformed rod, the tail of the second preformed rod enters the centering cylinder 5, four positions on the centering cylinder 5 are obtained (including a straight line which passes through the axial line of the centering cylinder 5 and is parallel to the X axis and two first intersection positions of the centering cylinder 5, a straight line which passes through the axial line of the centering cylinder 5 and is parallel to the Y axis and two second intersection positions of the centering cylinder 5 and is parallel to the Y axis), the shortest distance between the two first intersection positions of the centering cylinder 5 and the outer peripheral surface of the second preformed rod along the X axis is measured through a caliper, the shortest distance between the two second intersection positions of the centering cylinder 5 and the outer peripheral surface of the second preformed rod along the Y axis is measured, when the distance has deviation, the X-axis direction displacement table 11 and the Y-axis direction displacement table 12 are adjusted, the measurement and the adjustment actions are repeatedly operated for three times, and the second preformed rod and the wire drawing furnace 7 are concentric.
And (IV) high-temperature casting rod production.
And adjusting the Z-axis direction displacement table 13 to move upwards by 10cm, and taking down the centering barrel 5. And adjusting the Z-axis direction displacement table 13 to move the second preform downwards until the bottom end of the second preform is higher than the furnace mouth 71 of the wire drawing furnace by 20cm, taking down the furnace mouth sealing cover plate 6, and placing the handheld sealing plate 9 on the furnace mouth 71 of the wire drawing furnace. And adjusting the Z-axis direction displacement table 13 again to move the second preform downwards, taking down the handheld sealing plate 91 when the rod tail of the second preform just contacts the rod tail groove 93 of the handheld sealing plate 9, and putting the second preform into the furnace chamber of the wire drawing furnace 7. When the second preform automatically stops into the drawing furnace 7, whether the position of the second preform is concentric with the drawing furnace 7 or not is confirmed again, the second preform can be manually observed and judged, and the normal process range of the gas flow of the drawing furnace 7 and the power of the drawing furnace 7 is adjusted after the second preform is confirmed to be correct, so that optical fiber drawing production is carried out.
The invention also provides a drawing processing method of the optical fiber preform, which applies the high-temperature rod-changing centering system of the optical fiber preform and the drawing processing system of the optical fiber preform. The method sequentially comprises a high-temperature rod replacement centering step, a rod casting step, a furnace production step, a furnace discharging step and a rod unloading step.
Wherein, the high-temperature rod replacement centering step comprises the following steps:
s11: the centering device is arranged at the top of a furnace mouth 71 of the wire-drawing furnace 7, and the optical fiber perform is arranged on the rod hanging device 2.
S12: and controlling the three-axis direction displacement platform 1 to adjust the position of the hanging rod device 2 along the X axis and/or the Y axis, so that the optical fiber perform can downwards enter the centering cylinder 5, and the deviation of the axial lead of the optical fiber perform and the centering cylinder 5 is within a set range.
S13: and controlling the three-axis direction displacement platform 1 to move the rod hanging device 2 downwards along the Z axis, so that the bottom end of the optical fiber perform rod 4 extends into the centering cylinder 5. Specifically, the bottom end of the optical fiber perform 4 and the centering cylinder 5 may be radially attached to each other, and at this time, in S12, the deviation of the axial leads of the optical fiber perform and the centering cylinder 5 is 0 in the set range, and the bottom end of the optical fiber perform 4 extends into the centering cylinder 5, thereby completing the centering step.
Of course, after the bottom end of the optical fiber preform 4 is inserted into the centering tube 5, when the bottom end of the optical fiber preform 4 and the centering tube 5 may have a gap in the radial direction, in S12, the deviation of the axial lines of the optical fiber preform and the centering tube 5 may be a value greater than 0, and is usually a small value, within a set range. Meanwhile, the high-temperature rod replacement centering step further comprises the following steps so as to finish the centering step:
s14: the method comprises the steps of taking four positions on a centering barrel 5 (comprising two first intersection positions of a straight line which passes through the axial lead of the centering barrel 5 and is parallel to an X axis and the centering barrel 5 and two second intersection positions of a straight line which passes through the axial lead of the centering barrel 5 and is parallel to a Y axis and the centering barrel 5), measuring the nearest distance between the two first intersection positions of the centering barrel 5 and the outer peripheral surface of a second prefabricated rod along the X axis by a caliper, measuring the nearest distance between the two second intersection positions of the centering barrel 5 and the outer peripheral surface of the second prefabricated rod along the Y axis, and controlling a three-axis direction displacement platform 1 to adjust the position of a hanging rod device 2 along the X axis and/or the Y axis to eliminate the deviation when the distance has the deviation.
Further, the rod throwing step comprises:
s21: and controlling the three-axis direction displacement platform 1 to move the rod hanging device 2 upwards along the Z axis, so that the bottom end of the optical fiber perform rod 4 is positioned above the centering barrel 5.
S22: and (3) detaching the centering cylinder 5 from the centering device, controlling the three-axis direction displacement platform 1 to move the rod hanging device 2 downwards along the Z axis, and enabling the optical fiber perform rod 4 to move downwards for a certain distance and stop above the furnace mouth sealing cover plate 6.
S23: the furnace mouth sealing plate 6 is detached from the drawing furnace mouth 71.
S24: and controlling the three-axis direction displacement platform 1 to continuously move the rod hanging device 2 downwards along the Z axis, so that the optical fiber perform rod 4 enters the furnace mouth 71 of the wire drawing furnace.
Further, in the rod casting step, at S23: after the furnace mouth sealing plate 6 is detached from the wire drawing furnace mouth 71, S24: controlling the three-axis direction displacement platform 1 to continuously move down the rod hanging device 2 along the Z axis, and before the optical fiber perform rod 4 enters the furnace mouth 71 of the wire drawing furnace, the method further comprises the following steps:
s231: a handheld sealing plate 9 is covered on the furnace mouth 71 of the wire drawing furnace. After covering the hand-held sealing plate 9, at least part of the rod tail groove 93 is communicated with the furnace mouth 71 of the drawing furnace in the vertical direction.
S232: and controlling the three-axis direction displacement platform 1 to continuously move downwards the rod hanging device 2 along the Z axis until the bottom end of the optical fiber perform rod 4 contacts the rod tail groove 93.
S233: the hand-held sealing plate 9 is moved to separate the optical fiber preform from the rod tail groove 93 from the lateral notch, and the hand-held sealing plate 9 is removed from the drawing furnace mouth 71.
Further, the discharging step comprises the following steps:
s41, controlling the three-axis direction displacement platform 1 to start to move the rod hanging device 2 upwards along the Z axis, and simultaneously covering a handheld sealing plate 9 on the furnace mouth 71 of the wire drawing furnace, wherein the optical fiber prefabricated rod 4 enters the rod tail groove 93 through a lateral notch.
And S42, after the bottom end of the optical fiber perform rod 4 is higher than the furnace mouth 71 of the drawing furnace by a set distance, taking down the handheld sealing plate 9, and covering the furnace mouth sealing cover plate 6 on the furnace mouth 71 of the drawing furnace.
Wherein, after the step of discharging, the optical fiber prefabricated rod is positioned above the furnace mouth 71 of the drawing furnace.
Further, the rod unloading step comprises:
s51: and controlling the three-axis direction displacement platform 1 to adjust the position of the rod hanging device 2 along the X axis and/or the Y axis so that the rod hanging device 2 moves above the rod unloading barrel 32 of the rod unloading device 3.
S52: and controlling the three-axis direction displacement platform 1 to move the rod hanging device 2 downwards along the Z axis until the bottom end of the optical fiber preform rod 4 contacts the rod unloading cylinder 32.
S53: the optical fiber preform 4 is detached from the rod hanging device 2, and the optical fiber preform 4 is dropped into the rod detaching cylinder 32 by its own weight.
It will be understood that when an element is referred to as being "secured" to another element, it can be directly on the other element or intervening elements may also be 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. In addition, in the description of the present invention, "a plurality", and "a plurality" mean two or more unless otherwise specified.
The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
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 in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The high-temperature rod-changing centering system, the wire-drawing processing system and the method for the optical fiber preform rod are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A high-temperature rod-changing centering system for an optical fiber preform is characterized by comprising a rod hanging platform and a centering device;
the optical fiber preform lifting device comprises a lifting rod platform and a lifting rod, wherein the lifting rod platform comprises a lifting rod device (2) and a three-axis direction displacement platform (1), the lifting rod device (2) is connected to the bottom of the three-axis direction displacement platform (1), the lifting rod device (2) is used for lifting an optical fiber preform rod (4), the three-axis direction displacement platform (1) is used for driving the lifting rod device (2) to move along an X axis, a Y axis and a Z axis, the Z axis is a vertical direction, and the X axis, the Y axis and the Z axis are vertical in pairs;
the centering device is located hang the below of excellent platform, the centering device includes furnace mouth closing cap board (6) and cylindric centering section of thick bamboo (5) that have open-top, furnace mouth closing cap board (6) is including closing cap board (61), be fixed in go up crown plate (62) and being fixed in of closing cap board (61) top lower crown plate (63) of closing cap board (61) below, peg graft and be fixed in the bottom of centering section of thick bamboo (5) go up crown plate (62), centering section of thick bamboo (5) go up crown plate (62) with the axial lead collineation of crown plate (63) down just extends along vertical direction, lower crown plate (63) are used for dismantling to cup joint wire drawing furnace mouth (71) that are fixed in wire drawing furnace (7), and under the cup joint state, lower crown plate (63) the furnace of wire drawing furnace (7) is with the axle center state, closing cap board (61) closing cap wire drawing furnace mouth (71).
2. The fiber preform high temperature rod replacement centering system according to claim 1, wherein the centering cylinder (5) is an annular cylinder body which penetrates up and down, the centering cylinder (5) is detachably fixed on the upper ring plate (62), and the top of the centering cylinder (5) protrudes upwards from the upper ring plate (62).
3. The fiber preform high temperature rod replacement centering system according to claim 1, further comprising a handheld sealing plate (9), wherein the handheld sealing plate (9) can cover above the drawing furnace mouth (71) in a state that the furnace mouth sealing cover plate (6) is detached from the drawing furnace mouth (71), the handheld sealing plate (9) has a rod tail groove (93) penetrating in a vertical direction, and the rod tail groove (93) has a lateral notch opening on a side surface of the handheld sealing plate (9).
4. A fiber preform rod drawing processing system, characterized by comprising a drawing furnace (7) and the fiber preform rod high temperature rod changing centering system of any one of claims 1 to 3; the wire drawing furnace (7) comprises a furnace body and a wire drawing furnace fire hole (71) arranged at the top of the furnace body, and the wire drawing furnace fire hole (71) is further provided with an air seal water cooling device (8).
5. The optical fiber preform drawing processing system according to claim 4, further comprising a rod unloading device (3), wherein the rod unloading device (3) comprises a cart (31) and a rod unloading drum (32) fixed on the cart (31), and the rod unloading drum (32) has a top opening.
6. A method for drawing an optical fiber preform, wherein the system for centering an optical fiber preform by hot rod replacement according to claim 1 is applied, the method comprising a step of centering the optical fiber preform by hot rod replacement, the step of centering the optical fiber preform by hot rod replacement comprising:
the centering device is arranged at the top of a furnace mouth (71) of the wire-drawing furnace (7), and the optical fiber perform is arranged on the rod hanging device (2);
controlling the three-axis direction displacement platform (1) to adjust the position of the rod hanging device (2) along the X axis and/or the Y axis so that the optical fiber perform rod can enter the centering barrel (5) downwards, and the deviation of the axial lead of the optical fiber perform rod and the axial lead of the centering barrel (5) is within a set range;
and controlling the three-axis direction displacement platform (1) to move downwards along the Z axis to move the hanging rod device (2), so that the bottom end of the optical fiber perform rod (4) extends into the centering barrel (5).
7. The method of claim 6, further comprising a rod casting step after the high temperature rod replacement centering step;
the rod throwing step comprises:
controlling the three-axis direction displacement platform (1) to move up the rod hanging device (2) along the Z axis, so that the bottom end of the optical fiber preform rod (4) is positioned above the centering barrel (5);
the centering barrel (5) is detached from the centering device, the three-axis direction displacement platform (1) is controlled to move downwards the rod hanging device (2) along the Z axis, and the optical fiber preform rod (4) moves downwards for a certain distance and stops above the furnace mouth sealing cover plate (6);
detaching the furnace mouth sealing cover plate (6) from the wire drawing furnace mouth (71);
and controlling the three-axis direction displacement platform (1) to continuously move down the hanging rod device (2) along the Z axis so that the optical fiber preform rod (4) enters a furnace mouth (71) of the wire drawing furnace.
8. The method for drawing an optical fiber preform according to claim 7, wherein after detaching the furnace mouth sealing cover plate (6) from the furnace mouth (71) of the drawing furnace, the method for controlling the three-axis displacement platform (1) to move the hanger bar device (2) downwards along the Z axis continuously, before the optical fiber preform (4) enters the furnace mouth (71) of the drawing furnace, further comprises:
covering a handheld sealing plate (9) on the furnace mouth (71) of the wire drawing furnace, wherein the handheld sealing plate (9) is provided with a rod tail groove (93) penetrating in the vertical direction, the rod tail groove (93) is provided with a lateral notch opening on the side surface of the handheld sealing plate (9), and after the handheld sealing plate (9) is covered, at least part of the rod tail groove (93) is communicated with the furnace mouth (71) of the wire drawing furnace in the vertical direction;
controlling the three-axis direction displacement platform (1) to continuously move down the rod hanging device (2) along the Z axis until the bottom end of the optical fiber perform rod (4) contacts the rod tail groove (93);
moving the hand-held sealing plate (9) to separate the optical fiber preform rod (4) from the rod tail groove (93) from the lateral notch, and removing the hand-held sealing plate (9) from the furnace mouth (71) of the drawing furnace.
9. The method for drawing an optical fiber preform according to claim 6, further comprising a rod feeding step, an in-furnace production step and a furnace discharge step in this order after the high temperature rod replacement centering step;
the discharging step comprises the following steps:
covering a handheld sealing plate (9) on a furnace mouth (71) of the wire drawing furnace while controlling the three-axis direction displacement platform (1) to start moving upwards the rod hanging device (2) along the Z axis, wherein the handheld sealing plate (9) is provided with a rod tail groove (93) penetrating along the vertical direction, the rod tail groove (93) is provided with a lateral notch opening at the side surface of the handheld sealing plate (9), and the optical fiber preform rod (4) enters the rod tail groove (93) through the lateral notch;
and after the bottom end of the optical fiber preform rod (4) is higher than the furnace mouth (71) of the wire drawing furnace by a set distance, taking down the handheld sealing plate (9), and covering the furnace mouth sealing cover plate (6) on the furnace mouth (71) of the wire drawing furnace.
10. The method for drawing an optical fiber preform according to claim 6, further comprising a rod-casting step, an in-furnace production step, a furnace-discharging step and a rod-unloading step in this order after the high-temperature rod-changing centering step;
after the step of discharging, the optical fiber preform is positioned above a furnace opening (71) of the wire drawing furnace;
the rod unloading step comprises:
controlling the three-axis direction displacement platform (1) to adjust the position of the rod hanging device (2) along the X axis and/or the Y axis, so that the rod hanging device (2) moves above a rod unloading barrel (32) of the rod unloading device (3);
controlling the three-axis direction displacement platform (1) to move the rod hanging device (2) downwards along the Z axis until the bottom end of the optical fiber preform rod (4) contacts the rod unloading cylinder (32);
and detaching the optical fiber preform rod (4) from the rod hanging device (2) to enable the optical fiber preform rod (4) to fall into the rod unloading cylinder (32) by means of self weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210943143.0A CN115231815A (en) | 2022-08-08 | 2022-08-08 | High-temperature rod-changing centering system for optical fiber preform, wire-drawing processing system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210943143.0A CN115231815A (en) | 2022-08-08 | 2022-08-08 | High-temperature rod-changing centering system for optical fiber preform, wire-drawing processing system and method |
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| CN115231815A true CN115231815A (en) | 2022-10-25 |
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| CN202210943143.0A Pending CN115231815A (en) | 2022-08-08 | 2022-08-08 | High-temperature rod-changing centering system for optical fiber preform, wire-drawing processing system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611509A (en) * | 2022-11-03 | 2023-01-17 | 中天科技光纤有限公司 | Multifunctional rod feeding device for optical fiber drawing and optical fiber drawing equipment |
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2022
- 2022-08-08 CN CN202210943143.0A patent/CN115231815A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611509A (en) * | 2022-11-03 | 2023-01-17 | 中天科技光纤有限公司 | Multifunctional rod feeding device for optical fiber drawing and optical fiber drawing equipment |
| CN115611509B (en) * | 2022-11-03 | 2024-01-16 | 中天科技光纤有限公司 | Multifunctional rod feeding device for optical fiber drawing and optical fiber drawing equipment |
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