CN111825321B - Quartz glass rod flame polishing and annealing device and method thereof - Google Patents
Quartz glass rod flame polishing and annealing device and method thereof Download PDFInfo
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- CN111825321B CN111825321B CN202010730162.6A CN202010730162A CN111825321B CN 111825321 B CN111825321 B CN 111825321B CN 202010730162 A CN202010730162 A CN 202010730162A CN 111825321 B CN111825321 B CN 111825321B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
- C03B29/02—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a discontinuous way
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
- C03B25/02—Annealing glass products in a discontinuous way
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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
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Abstract
The invention relates to a quartz glass rod flame polishing and annealing method, which is characterized by comprising the following steps of: s1 moving end feeding: firstly, clamping a quartz glass rod and rotating the quartz glass rod at a constant speed; s2 preheating: opening a main burner, controlling the required temperature, controlling a flame operation table to transversely reciprocate, and preheating the quartz glass rod; s3 polishing and annealing: the height and angle of the auxiliary flame spray heads and the hydrogen and oxygen supply amount of the auxiliary heating area are adjusted in advance, each auxiliary flame spray head is opened, at the moment, the displacement speed controller is adjusted, the flame operating platform drives the flame spray gun fixed on the flame gun rack to heat and polish the quartz glass rod at a constant speed, meanwhile, the distance between the auxiliary burners and the hydrogen and oxygen amount of each burner control the temperature to form a temperature gradient, the quartz glass rod can be slowly cooled, and the annealing effect is achieved. The invention has the advantages of good production quality and high production efficiency.
Description
Technical Field
The invention relates to the technical field of glass hot processing, in particular to a quartz glass rod flame polishing and annealing device and a method thereof.
Background
Silica glass rods are widely used in the optical fiber manufacturing industry as connecting rods, leading rods, holding rods for VAD processes, etc. required in the optical fiber manufacturing process, and such products generally require the silica glass rods to have good surface finish and transparency. In the previous dimension and shape processing link of the quartz glass rod, turning and grinding cannot meet the requirements, and the polishing of cylindrical products with complex structures is difficult to realize by common polishing methods (cold working grinding and polishing). At present, a flame polishing technology is generally adopted, namely oxyhydrogen flame is utilized to heat the surface of a processed workpiece after fine processing to a melting temperature, and mass points on the surface of glass move along with the action of surface tension, so that a transparent and smooth polished surface is formed on the surface of quartz glass; as shown in the patent application No. 201620024895.7 filed on 2016, 01, 12, and entitled automatic flame polishing device for quartz glass rods.
After long-term use and experiments, the quartz glass rod produced by the existing processing equipment and the matched processing technology has the following problems:
after the flame polishing in the traditional process, the quartz rod is placed in an annealing furnace for annealing at the temperature of 1000-1100 ℃ for more than 2 hours, the thin or long quartz rod can be bent, and the bending degree exceeds the standard and is unqualified; in addition, the annealing mode needs to increase the heating time of the quartz glass rod, and has low production efficiency and high production cost.
Therefore, the application provides a novel quartz glass flame polishing and annealing device and a matching process of the device, and aims to solve the problems that the traditional polishing device cannot be directly annealed and is low in production efficiency.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a quartz glass rod flame polishing and annealing device and a method thereof.
The technical scheme of the invention is realized as follows: a flame polishing and annealing device for a quartz glass rod comprises a bed body with a rack slideway, a fixed bed head arranged at one end of the bed body and a movable bed head transversely connected with the rack slideway in a sliding manner; be provided with the flame operation platform who slides the setting with the rack slide on the lathe bed between fixed head of a bed and the removal head of a bed, fixed head of a bed and the overhead left part chuck and the right part chuck that all faces flame operation platform that are provided with respectively of removal bed, its characterized in that: the flame operation table is provided with a main burner and a plurality of auxiliary burners arranged at equal intervals, the main burner and the auxiliary burners are positioned on the same horizontal line, and the combustion temperature is uniformly reduced from the main burner to one side of the auxiliary burners to form a temperature gradient; and temperature measuring devices for detecting the local temperature of the quartz glass rod are arranged on the main burner and the auxiliary burner.
Preferably: the main burner comprises a flame gun rack arranged at the bottom and/or two sides of a processed workpiece and a flame spray gun arranged on the flame gun rack.
Preferably: the auxiliary burner comprises an auxiliary flame gun rack and an auxiliary flame nozzle, wherein the auxiliary flame gun rack is arranged at the bottom and/or two sides of a processed workpiece; the auxiliary flame spray head and the auxiliary flame gun rack can be longitudinally displaced.
Preferably: the temperature measuring device is an infrared temperature measuring probe with an output end facing the workpiece to be processed.
Preferably: the flame operation table and the moving bed head are both fixedly provided with motors; the output end of the motor is provided with a gear meshed and connected with the rack slideway.
Preferably: the servo motor is arranged on the fixed bed head and used for controlling the moving bed head and the flame operating platform to move on the rack rail, and the displacement speed controller is arranged above the servo motor and used for controlling the moving speed of the moving bed head and the flame operating platform.
Preferably: the left chuck and the right chuck are rotatably arranged on the corresponding fixed bed head and the corresponding moving bed head through drivers respectively.
Compared with the prior art, the invention has the following beneficial effects:
1. the auxiliary burners arranged at equal intervals are additionally arranged on the flame operation table, so that the longitudinal height of each burner is uniformly decreased, the hydrogen and oxygen amount of each burner is accurately controlled to control the temperature, the combustion temperature is uniformly reduced from the main burner to one side of the auxiliary burner to form a temperature gradient, the quartz glass rod can be slowly cooled, and the annealing effect is achieved; compared with the traditional mode that the quartz glass rod is shut down after finishing light, the infrared temperature measuring probe detects the temperature of the surface of the quartz glass rod, and the quartz glass rod is placed into the annealing furnace for annealing after being naturally cooled to the temperature capable of annealing, so that the quartz glass rod can be prevented from being placed into the annealing furnace for annealing for more than 2 hours at the temperature of 1000 plus materials of 1100 ℃, and the slender and softened quartz rod can be bent under the action of high temperature, and the phenomenon of unqualified quartz rod is avoided.
In addition, the mode saves the waiting time for cooling and cooling, can improve the production efficiency and saves the production cost.
2. Can carry out longitudinal displacement between vice flame shower nozzle and the vice flame gun rack to set up the screw hole in the side of vice flame gun rack, be provided with the nut in the screw hole, and extrude making it and the vice flame gun rack between produce frictional force through this nut and fix a position, the simple high efficiency of professional mode, and because the quality of flame gun is lighter, therefore such clamping mode is enough stable.
In addition, the auxiliary flame spray head can also move longitudinally relative to the auxiliary flame gun rack in a lead screw driving mode; the device comprises a connecting frame, a screw rod, a nut seat, a screw rod driving motor and a screw rod driving motor, wherein the connecting frame is arranged below an auxiliary flame spray head, a rotating screw rod is arranged below the auxiliary flame spray head through the screw rod frame, the nut seat is fixedly connected with the connecting frame is arranged on the screw rod, the nut seat is in threaded connection with the screw rod, the screw rod seat is clamped on the screw rod frame and is in sliding connection with the screw rod frame, and the screw rod is driven to rotate through the screw rod driving motor arranged on the screw rod frame.
In addition, the invention also discloses a polishing and annealing method of quartz glass rod flame, which is characterized by comprising the following steps:
s1 moving end feeding: firstly, clamping a quartz glass rod on a right chuck of a movable bed head; starting a driver to drive the right chuck to rotate at a constant speed;
s2 preheating: opening a main burner, controlling the supply flow, direction and angle of an external hydrogen and oxygen supply device, opening a servo motor, adjusting a displacement speed controller, controlling a flame operation table to transversely reciprocate, and preheating a quartz glass rod;
s3 polishing and annealing: moving the flame to the middle part of the quartz glass rod, adjusting the height and angle of the auxiliary flame spray heads and the supply of hydrogen and oxygen in the auxiliary heating area in advance, and opening each auxiliary flame spray head, at the moment, adjusting the displacement speed controller to enable the flame operation table to drive the flame spray gun fixed on the flame gun frame to heat and polish the quartz glass rod at a constant speed, meanwhile, controlling the temperature by the distance between the auxiliary burners and the amount of hydrogen and oxygen of each burner to form a temperature gradient, so that the quartz glass rod can be slowly cooled, and the annealing effect is achieved.
S4 fixed end feeding: after one end is polished, the movable bed head is driven to be close to the fixed bed head until the glass rod enters a left chuck clamping area on the fixed bed head, and then the glass rod is clamped by a left chuck; and then repeating the processing steps of S2 and S3 to realize complete processing.
S5 discharging: and finally, stopping the fire and stopping the machine until the glass rod is cooled, and taking down the glass rod for packaging.
Compared with the prior art, the invention has the following beneficial effects:
1. the quartz glass rod is annealed by flame with the gradient formed by the temperature reduction in sequence during polishing, so that the cooling and waiting time is not required compared with the traditional process, the production efficiency can be improved, and the production cost can be saved;
in the process, the quartz glass rod is annealed at a slowly reduced temperature just after being softened and polished, so that the quartz glass rod can be slowly cooled to achieve the annealing effect; compared with the traditional mode that the quartz glass rod is shut down after finishing light, the infrared temperature measuring probe detects the temperature of the surface of the quartz glass rod, and the quartz glass rod is placed into the annealing furnace for annealing after being naturally cooled to the temperature capable of annealing, so that the quartz glass rod can be prevented from being placed into the annealing furnace for annealing for more than 2 hours at the temperature of 1000 plus materials of 1100 ℃, and the slender and softened quartz rod can be bent under the action of high temperature, and the phenomenon of unqualified quartz rod is avoided.
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, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the screw driving device.
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 inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example 1
As shown in figures 1-2, the invention discloses a quartz glass rod flame polishing and annealing device, which comprises a bed body 1 with a rack slideway 11, a fixed bed head 2 arranged at one end of the bed body 1 and a movable bed head 3 transversely connected with the rack slideway 11 in a sliding way; a flame operating table 4 arranged in a sliding manner with a rack slideway 11 is arranged on the bed body 1 between the fixed bed head 2 and the movable bed head 3, a left chuck 21 and a right chuck 31 which face the flame operating table 4 are respectively arranged on the fixed bed head 2 and the movable bed head 3, in the specific embodiment of the invention, a main burner 41 and a plurality of auxiliary burners 42 arranged at equal intervals are arranged on the flame operating table 4, the main burner 41 and the auxiliary burners 42 are positioned on the same horizontal line, and the combustion temperature is uniformly reduced from the main burner 41 to one side of the auxiliary burners 42 to form a temperature gradient; the temperature measuring devices 5 for detecting the local temperature of the quartz glass rod are arranged on the main burner 41 and the auxiliary burner 42.
In the embodiment of the present invention, the main burner 41 includes a torch frame provided at the bottom and both sides of the workpiece, and a torch mounted on the torch frame.
In the embodiment of the present invention, the secondary burner 42 includes a secondary flame holder and a secondary flame nozzle provided at the bottom and both sides of the workpiece; the auxiliary flame spray head and the auxiliary flame gun rack can be longitudinally displaced.
In the specific embodiment of the invention, the temperature measuring device 5 is an infrared temperature measuring probe with an output end facing the workpiece to be processed.
In the specific embodiment of the invention, the flame operation table 4 and the moving bed head are both fixedly provided with motors; the output end of the motor is provided with a gear meshed and connected with the rack slideway.
In the specific embodiment of the invention, a servo motor 6 for controlling the travelling displacement of the movable bed head 2 and the flame operating platform 4 on the rack track 11 is arranged on the fixed bed head 3, and a displacement speed controller 7 for controlling the travelling speed of the movable bed head 2 and the flame operating platform 4 is arranged above the servo motor.
In the embodiment of the invention, the left chuck 21 and the right chuck 21 are respectively rotatably arranged on the corresponding fixed head 3 and the movable head 2 through a driver.
Compared with the prior art, the invention has the following beneficial effects:
1. the auxiliary burners arranged at equal intervals are additionally arranged on the flame operation table, so that the longitudinal height of each burner is uniformly decreased, the hydrogen and oxygen amount of each burner is accurately controlled to control the temperature, the combustion temperature is uniformly reduced from the main burner to one side of the auxiliary burner to form a temperature gradient, the quartz glass rod can be slowly cooled, and the annealing effect is achieved; compared with the traditional mode that the quartz glass rod is shut down after finishing light, the infrared temperature measuring probe detects the temperature of the surface of the quartz glass rod, and the quartz glass rod is placed into the annealing furnace for annealing after being naturally cooled to the temperature capable of annealing, so that the quartz glass rod can be prevented from being placed into the annealing furnace for annealing for more than 2 hours at the temperature of 1000 plus materials of 1100 ℃, and the slender and softened quartz rod can be bent under the action of high temperature, and the phenomenon of unqualified quartz rod is avoided.
In addition, the mode saves the waiting time for cooling and cooling, can improve the production efficiency and saves the production cost.
2. Can carry out longitudinal displacement between vice flame shower nozzle and the vice flame gun rack to set up the screw hole in the side of vice flame gun rack, be provided with the nut in the screw hole, and extrude making it and the vice flame gun rack between produce frictional force through this nut and fix a position, the simple high efficiency of professional mode, and because the quality of flame gun is lighter, therefore such clamping mode is enough stable.
Example 2
In addition, the invention also discloses a polishing and annealing method of quartz glass rod flame, which is characterized by comprising the following steps:
s1 moving end feeding: firstly, clamping a quartz glass rod on a right chuck of a movable bed head; starting a driver to drive the right chuck to rotate at a constant speed;
s2 preheating: opening a main burner, controlling the supply flow, direction and angle of an external hydrogen and oxygen supply device, opening a servo motor, adjusting a displacement speed controller, controlling a flame operation table to transversely reciprocate, and preheating a quartz glass rod;
s3 polishing and annealing: moving the flame to the middle part of the quartz glass rod, adjusting the height and angle of the auxiliary flame spray heads and the supply of hydrogen and oxygen in the auxiliary heating area in advance, and opening each auxiliary flame spray head, at the moment, adjusting the displacement speed controller to enable the flame operation table to drive the flame spray gun fixed on the flame gun frame to heat and polish the quartz glass rod at a constant speed, meanwhile, controlling the temperature by the distance between the auxiliary burners and the amount of hydrogen and oxygen of each burner to form a temperature gradient, so that the quartz glass rod can be slowly cooled, and the annealing effect is achieved.
S4 fixed end feeding: after one end is polished, the movable bed head is driven to be close to the fixed bed head until the glass rod enters a left chuck clamping area on the fixed bed head, and then the glass rod is clamped by a left chuck; and then repeating the processing steps of S2 and S3 to realize complete processing.
S5 discharging: and finally, stopping the fire and stopping the machine until the glass rod is cooled, and taking down the glass rod for packaging.
Compared with the prior art, the invention has the following beneficial effects:
1. the quartz glass rod is annealed by the flame pair with the gradient formed by the temperature reduction in sequence while polishing, so that the cooling and waiting time is not required compared with the traditional process, the production efficiency can be improved, and the production cost is saved;
in the process, the quartz glass rod is annealed at a slowly reduced temperature just after being softened and polished, so that the quartz glass rod can be slowly cooled to achieve the annealing effect; compared with the traditional mode that the quartz glass rod is shut down after finishing light, the infrared temperature measuring probe detects the temperature of the surface of the quartz glass rod, and the quartz glass rod is placed into the annealing furnace for annealing after being naturally cooled to the temperature capable of annealing, so that the quartz glass rod can be prevented from being placed into the annealing furnace for annealing for more than 2 hours at the temperature of 1000 plus materials of 1100 ℃, and the slender and softened quartz rod can be bent under the action of high temperature, and the phenomenon of unqualified quartz rod is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (1)
1. A flame polishing and annealing device for a quartz glass rod comprises a bed body with a rack slideway, a fixed bed head arranged at one end of the bed body and a movable bed head transversely connected with the rack slideway in a sliding manner; be provided with the flame operation platform who slides the setting with the rack slide on the lathe bed between fixed head of a bed and the removal head of a bed, fixed head of a bed and the overhead left part chuck and the right part chuck that all faces flame operation platform that are provided with respectively of removal bed, its characterized in that: the flame operating table is provided with a main burner and a plurality of auxiliary burners arranged at equal intervals, the main burner and the auxiliary burners are positioned on the same horizontal line, and the combustion temperature is uniformly reduced from the main burner to one side of the auxiliary burners to form a temperature gradient; temperature measuring devices for detecting the local temperature of the quartz glass rod are arranged on the main burner and the auxiliary burner;
the main burner comprises a flame gun rack arranged at the bottom and/or two sides of a processed workpiece and a flame spray gun arranged on the flame gun rack;
the auxiliary burner comprises an auxiliary flame gun rack and an auxiliary flame nozzle, wherein the auxiliary flame gun rack is arranged at the bottom and/or two sides of a processed workpiece; the auxiliary flame spray head and the auxiliary flame gun rack can be longitudinally displaced;
the temperature measuring device is an infrared temperature measuring probe with an output end facing the workpiece to be processed;
the flame operation table and the moving bed head are both fixedly provided with motors; the output end of the motor is provided with a gear meshed and connected with the rack slideway;
a servo motor for controlling the travelling displacement of the movable bed head and the flame operating platform on the rack rail is arranged on the fixed bed head, and a displacement speed controller for controlling the travelling speed of the movable bed head and the flame operating platform is arranged above the servo motor;
the left chuck and the right chuck are respectively rotatably arranged on the corresponding fixed bed head and the corresponding moving bed head through drivers;
the polishing and annealing method of the quartz glass rod flame comprises the following steps:
s1 moving end feeding: firstly, clamping a quartz glass rod on a right chuck of a movable bed head; starting a driver to drive the right chuck to rotate at a constant speed;
s2 preheating: opening a main burner, controlling the supply flow, direction and angle of an external hydrogen and oxygen supply device, opening a servo motor, adjusting a displacement speed controller, controlling a flame operation table to transversely reciprocate, and preheating a quartz glass rod;
s3 polishing and annealing: moving the flame to the middle part of the quartz glass rod, adjusting the height and angle of the auxiliary flame spray heads and the supply of hydrogen and oxygen in the auxiliary heating area in advance, and opening each auxiliary flame spray head, adjusting the displacement speed controller at the moment to enable the flame operation table to drive the flame spray gun fixed on the flame gun frame to heat and polish the quartz glass rod at a constant speed, and meanwhile, controlling the temperature by the distance between the auxiliary burners and the amount of hydrogen and oxygen of each burner to form a temperature gradient, so that the quartz glass rod can be slowly cooled to achieve the annealing effect;
s4 fixed end feeding: after one end is polished, the movable bed head is driven to be close to the fixed bed head until the glass rod enters a left chuck clamping area on the fixed bed head, and then the glass rod is clamped by a left chuck; then repeating the processing steps of S2 and S3 to realize complete processing;
s5 discharging: and finally, stopping the fire and stopping the machine until the glass rod is cooled, and taking down the glass rod for packaging.
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| CN202010730162.6A CN111825321B (en) | 2020-07-27 | 2020-07-27 | Quartz glass rod flame polishing and annealing device and method thereof |
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| CN114057383A (en) * | 2021-10-13 | 2022-02-18 | 浙江富乐德石英科技有限公司 | Quartz ring fire polishing device and method |
| CN114524607A (en) * | 2021-10-13 | 2022-05-24 | 浙江富乐德石英科技有限公司 | Quartz rod fire polishing device and method |
| CN114380487A (en) * | 2021-12-30 | 2022-04-22 | 江苏铁锚玻璃股份有限公司 | Glass edge polishing method and flame polishing device |
| CN115070590A (en) * | 2022-07-12 | 2022-09-20 | 上海强华实业股份有限公司 | Polishing method of quartz cavity |
| CN115448584B (en) * | 2022-09-09 | 2023-07-14 | 中国建筑材料科学研究总院有限公司 | Flame polishing method and device for high-expansion glass rod |
| CN117383812B (en) * | 2023-12-13 | 2024-03-08 | 上海强华实业股份有限公司 | Automatic flame polishing device and system for quartz small tubes |
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| CN102898018A (en) * | 2012-10-09 | 2013-01-30 | 中天科技精密材料有限公司 | Polishing device of glass rod and polishing method thereof |
| CN205275454U (en) * | 2016-01-12 | 2016-06-01 | 中建材衢州金格兰石英有限公司 | Automatic flame polish device of quartz glass stick |
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| US6826929B2 (en) * | 2001-09-19 | 2004-12-07 | Premakaran T. Boaz | Method for simultaneously heating and cooling glass to produce tempered glass |
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| CN102898018A (en) * | 2012-10-09 | 2013-01-30 | 中天科技精密材料有限公司 | Polishing device of glass rod and polishing method thereof |
| CN205275454U (en) * | 2016-01-12 | 2016-06-01 | 中建材衢州金格兰石英有限公司 | Automatic flame polish device of quartz glass stick |
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