TW548247B - Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatus - Google Patents

Abstract

A method for manufacturing an optical fiber comprises setting a heating condition for heating a glass rod, which is a parent material of the optical fiber, and an elongating speed of the glass rod based on a prescribed numerical value which changes with a progress of elongation of the glass rod; heating and elongating the glass rod to generate a preform based on the heating condition and the elongating speed which are set by the setting; and drawing the preform to a filament-like form by further heating the preform to generate the optical fiber.

Description

A7 b / 548247 5546pifdl.doc / 008 V. Description of the invention (ί) The present invention relates to a method for manufacturing optical fiber, a method for manufacturing a preform, and a device for manufacturing a preform, which can be manufactured with a diameter Small changes in preforms and optical fibers. FIG. 1 does not show a schematic diagram of a conventional first elongating device 400 of glass base material. The glass base material 102 is a fiber-based material, and is usually extended by the glass base material first extension device 400. This forces the glass base material 102 to have a glass rod 106 in diameter. The glass rod 106 has a diameter from 3 mm to 5 mm, which is larger than most conventional diameters for pulling out optical fibers. Most conventional diameters used to pull out optical fibers are 30mm to 80mm. The glass base material first extension device 400 includes a heating furnace tube 100 for heating the glass base material 102, and a drawing chuck 104 for supporting and extending the heating glass base material 102. In order to extend the glass base material 102, the first glass base material extension device 400 supplies the glass base material 102 to the heating furnace tube 100. Here, the base glass material 102 is heated to approximately 2000 degrees Celsius. The first extension device 400 then supports the glass base material 102 through the pull-out clip 104 and continuously pulls down the glass base material 102 from the heating furnace tube 100 to form a glass rod 106. FIG. 2 is a structural diagram of a conventional glass lathe 110. The glass rod 106 manufactured by the first extension device 400 of glass basic material will be extended twice through the glass lathe 110 degrees to produce a prefabricated part 107. At the same time, the diameter of the glass rod 106 is reduced to a prescribed diameter. The glass lathe includes clamps 118 and Π9 to support the glass rod 106, a rear support base 116 to move the clip 119, and a heating source 122 to heat the glass rod 106. One side of the card holder U8 is fixed, while the other side of the card holder 118 is movable. One tractive force can be IX 297 mm) (Please read the precautions on the back before filling this page) -------- 11 --------- Line _ Printed by the Consumer Consumption Cooperative of the Ministry of Economic Affairs A7 B7 548247 5546pifd 1 .doc / 008 5. Description of the invention (7) is used for the card holder 119. The glass rod 106 supported by the clamps 118 and 119 will be heated by the heating source 122. The glass rod 106 can be extended by pulling the glass rod 106 through the moving tail support platform 116. Therefore, the diameter of the glass rod 106 is reduced to a predetermined diameter. When the glass base material 102 is extended using the conventional glass base material first extension device 400, it is possible to manufacture a curved glass rod 106. In addition, when a conventional glass lathe 110 is used to extend the glass rod 106 to make the preform 107_, additional problems typically occur. These problems include changes in the diameter of the preform 107. This is because the amount of gas supplied to the heating source 122 and the speed of moving the tail support U6 are different when the preform 107 is produced. When the curved glass rod 106 manufactured by the first material extension device 400 is used to manufacture the prefabricated part 107 through the glass lathe 110, the diameter of the prefabricated part 107 will change. When an optical fiber is manufactured by pulling out a preform 107 having a varying diameter, the diameter of the produced optical fiber also changes. This makes it difficult to manufacture high-quality optical fibers. Therefore, an object of the present invention is to provide a method for manufacturing an optical fiber, a method for manufacturing a preform, and a device for manufacturing a preform, which can solve the foregoing problems. The object of the present invention can be achieved by combining the features described in the independent items of the patent application scope of the present invention. This application-scope independent term defines additional advantages of embodiments of the invention. According to a first aspect of the present invention, a method for manufacturing an optical fiber is provided, which includes setting a heating condition for heating a glass rod, which is the parent material of the optical fiber, and according to a predetermined number that changes as the glass rod is extended. , Set the extension speed of the glass rod; heating set according to this setting (please read the precautions on the back before filling out this page) Order --------- Line-Printed by the Ministry of Economic Affairs and Consumers ’Cooperative, Jibu 548247 A7 ---- 5546pjfdl.doc / 008_B7 5. Description of the invention (,) Condition and extension speed 'Heating and extending the glass rod to produce a preform; and heating the preform to draw the preform into a similar thin line shape, To produce an optical fiber. A method for manufacturing an optical fiber is provided. The setting situation is determined based on the duration of the extension process, and the heating condition and the extension speed are set. This heating process and extension process may include a tail end pull-out process 'to reduce the diameter of one of the glass rods * end' and the tail end pull-out process according to the duration of the tail end pull-out process. Pull out the end of the glass rod. A method for manufacturing an optical fiber is provided, the setting of which is based on the duration of the extension process, the position of the burner used to heat the glass rod, and the amount of gas supplied to the burner are set as heating conditions. This setting can be set as the extension speed based on the duration of the extension process. A method for manufacturing an optical fiber is provided. The setting situation is based on the length of the glass rod during the extension process, and the heating condition and the extension speed are set. Provide a method for manufacturing optical fiber \ The heating process and extension process include a tail-end drawing process to reduce the diameter of one end of the glass rod, and the tail-end drawing process is based on the length of the glass rod. Pull out the end of the glass rod. This setting can be based on the extended length of the glass rod, setting the moving distance of the burner used to heat the glass rod and the amount of gas supplied to the burner as heating conditions. This setting can be based on the extension length of the glass rod, and set the moving speed of the clip used to support the glass rod as the extension speed. 6 China Paper Standard (CNS) A4 Specification (21Q X 297)

Iri I ------- Line-Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by 548247 554 ^ pifdl.doc / 008_B7_ V. Description of the Invention The optical fiber method. In this setting, an encoder is provided, which is provided on a motor for driving the clip, and the moving distance of the clip is measured by measuring the rotation angle of the motor. Provide a method for manufacturing an optical fiber ’This setting situation is based on the tension generated on the glass rod during the extension process as the number, setting the heating condition and the extension speed. Provide a method for manufacturing optical fiber for heating the heating source of the glass rod. As the extension process proceeds, move along the longitudinal direction of the glass rod 'and add B heating and extension process to control the extension speed. The tension generally becomes 110% or less, and the average tension of the tension after the heating source moves a predetermined distance. A method for manufacturing an optical fiber is provided, in which the tension is controlled during heating and elongation, so that the tension before the heating source moves a predetermined distance generally becomes an average tension from 80% to 110% after the heating source moves a predetermined distance. This prescribed distance is generally between 50 mm and 150 mm. When the heating source moves this specified distance, the heating and extension process can control the extension speed to be p-constant speed. This setting depends on the tension, and the speed of the clamp used to support the glass rod is set as the extension speed. A method for manufacturing an optical fiber is provided. The setting situation is based on the position of the marker provided on the connection between the glass rod and any virtual rod as a number, which is connected to either end of the glass rod to set the heating condition and Increase speed. A method for manufacturing an optical fiber is provided. The heating process and the extension process include a tail-end drawing process to reduce the diameter of one end of the glass rod, and the tail-end drawing process is based on the marked position. This paper size applies to China National Standard (CNS) A4 specification (210 X 297 public love) -------------------- Order --------- ( (Please read the note on the back? Matters before filling out this page) 548247 A7 B7

LiSDifd 1.doc / 008 5. Description of the Invention (k) The end of the glass rod. This setting can be based on the position of the cut provided on the connection between the glass rod and any virtual rod as the mark position 'to set the heating condition and the extension speed. A method for manufacturing optical fiber is provided, and the setting situation is based on the position of the fluorescent paint provided on the connection between the glass rod and any virtual rod as a mark position, and the heating condition and the extension speed are set. A method for manufacturing an optical fiber is provided, and the setting situation is based on the diameter in a plurality of positions along the axis of the glass > rod as the number 値 'set the extension speed in the plurality of positions along the axis of the glass rod' and The heating condition is set based on the average diameter of the diameters of the plurality of positions of the glass rod. A method for manufacturing an optical fiber is provided. The diameter of one end of a glass rod pulled out by the tail end is reduced, and the setting situation is based on the diameter of a plurality of positions along the axis of the glass rod, and along the extension process. The length change of the glass rod in the axis direction of the glass rod is taken as a number, and the position of the region of the tail end of the glass rod pulled out by the tail end is detected, and the flame honing is set according to the position of the region of the tail end pulled out. The honing range of the glass rod and the honing range of the glass rod are set according to the diameter of the region pulled out at the tail end, setting the heating power condition of the flame, and the flame during the heating and extending process through the heating power condition. According to another aspect of the present invention, a method for manufacturing an optical fiber is provided. The method includes heating and extending a glass rod, which is the parent material of the optical fiber, to produce a preform. The preform is additionally heated to pull the preform into a similar thin line shape. To generate an optical fiber; and, the heating and extending process has preheating the glass rod until the specified area of the glass rod is softened, and the tail end is pulled out of the specified area to reduce the diameter of the specified area and used to additionally heat the paper size Applicable to China National Standard (CNS) A4 (210 X 297 mm) ------------- ¾ (Please read the notes on the back before filling this page) Order iu ---- -Line; printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 548247 5546pifd 1 .doc / 008 _JB7_______ V. Description of the invention (6) and extension of the specified area, making one end of the glass rod. A method for manufacturing an optical fiber is provided. The tail-end drawing process further includes a second heating process for heating an area through a flame. Compared with a center of a prescribed area, most of the areas are directed toward the middle surface of a glass rod. The flame concentration is less than The flame concentration of the preheating process. According to a first aspect of the present invention, a method for manufacturing a preform, which is a matrix material of an optical fiber, includes setting a heating condition for heating a glass rod, which is a matrix material of an optical fiber, and according to the progress of the extension of the glass rod. Change the specified number, set the extension speed of the glass rod, and set the heating condition and extension speed according to the setting situation, and heat and extend the glass rod to produce a preform. A method for manufacturing a prefabricated part is provided. The setting situation is based on the duration of the extension process as a number, and the heating condition and the extension speed are set. To provide a method for manufacturing a preform, the heating process and the extension process include a tail-end drawing process to reduce the diameter of one end of the glass rod, and the tail-end drawing process depends on the duration of the tail-end drawing process. Pull the end of the glass rod towards the end of the heating and p extension process. This setting is based on the length of the glass rod extension during the extension process, and sets the heating condition and extension speed. The heating process and extension process further include a tail end drawing process to reduce the diameter of one end of the glass rod, and the tail end drawing process is based on the extension length of the glass rod. With the heating and extension process, the tail end pulls out the glass rod. The Shishan frequently. A method for manufacturing a prefabricated part is provided, and the setting situation is based on the tension generated on the glass rod during the extension process as a number, and the heating condition and the extension speed are set. This paper has been used in accordance with the national standard (CNS) A4 specification (210 X 297 public love (please read the precautions on the back before filling out this page) i Order --------- line > Economy Printed by the Consumer Cooperatives of the Ministry of Intellectual Property Bureau 548247 A7 S546pifd 1 .doc / 008 R7 V. Description of the invention) Provide a method for manufacturing prefabricated parts to heat the heating source of the glass rod, along with the extension process, follow The longitudinal movement, and the heating and extension process control the extension speed, so that the tension before the heating source moves a predetermined distance generally becomes 10% or less. The average tension after the heating source moves a predetermined distance. A method for manufacturing a preform is provided, in which the tension is controlled during heating and elongation, so that the tension before the heating source moves a predetermined distance generally becomes an average tension from 80% to 110% after the heating source moves a predetermined distance. The > prescribed distance is generally between 50mm and 150mm. When the heating source moves a specified distance, the heating and extension process controls the extension speed to a certain speed. Provide a method for manufacturing prefabricated parts. The setting situation is based on the position of the mark provided on the connection between the glass rod and any virtual rod, which is connected to either end of the glass rod to set the heating condition. With extended speed. The heating process and extension process may include a tail-end drawing process to reduce the diameter of one end of the glass rod, and the tail-end drawing process according to the marked position, with the heating and extending process, the tail end of the glass rod is pulled out of the end of the glass rod. A method for manufacturing a prefabricated part is provided. The setting situation is based on the diameter in a plurality of positions along the axis of the glass rod as a number, the extension speed in the plurality of positions along the axis of the glass rod is set, and the basis is set. The average diameter of the diameters of the plurality of positions of the glass rod is used to set the heating condition. To provide a method for manufacturing a preform, the diameter of one end of a glass rod pulled out by a tail end is reduced, and the setting situation is based on the diameter in a plurality of positions along the axis of the glass rod, and along the extension process The length change of the glass rod in the direction of the axis of the glass rod is taken as a number, and the position of the region where the tail end of the glass rod is pulled out by the tail end is detected. (CNS) A4 specification (210 X 297 public love) (Please read the precautions on the back before filling out this page) I ------ hIT · ----- III · Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs System 548247 A7 B7 5546pifd 1 .doc / 008 5. In the description of the (parent) area, set the honing range of the glass rod through flame honing, and set the heating power of the flame according to the diameter of the area pulled out by the tail. , As well as the honing range of the glass rod by the flame of the heating power condition during the heating and extension process. According to another aspect of the present invention, a method for manufacturing a preform is provided, which is a mother material of an optical fiber, including preheating a glass rod until a specified area of the glass rod is softened, and pulling out the specified area at a tail end for shrinking _ Reduce the diameter of the specified area and use it to heat and extend the specified area to make one end of the glass rod. This process of pulling out the tail end further includes a second heating process for heating an area through the flame. Compared with the center of the prescribed area, most of it is directed toward the middle surface of the glass rod. The flame concentration is less than that of the flame during the preheating process. concentration. According to a first aspect of the present invention, a device for manufacturing a preform, which is a mother material of an optical fiber, includes a heating source for heating a glass rod, which is a mother material of the preform; an extension unit 'for extending glass A measuring device for measuring the number that changes as the glass rod is extended, 値; and a control unit for controlling the heating condition of the heating source based on the number 値 measured by the measuring device And the extension speed of the extension unit. A device for manufacturing a prefabricated part is provided. The measuring device measures the progress time of the extension process as a number, and the control unit controls the heating condition and the extension speed according to the progress time of the extension process measured by the measurement device. A device for manufacturing a prefabricated part is provided. The measuring device measures the moving distance of the extension unit as the extension progresses, and the control unit controls the heating according to the moving distance of the extension unit measured by the measuring device. Condition and extension speed. This paper size applies to China National Standard (CNS) A4 specification (21〇X 297 public love) --------------------- Order ------- —Line · (Please read the notes on the back before filling this page)

I 548247 5 S46pifd 1 .doc / 008 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of Invention (q) Provide a device for manufacturing prefabricated parts. The measuring device measures the tension generated on the glass rod through the extension process. As a counter, and the control unit controls the heating condition and the extension speed according to the tension generated on the glass rod measured by the measuring device. A device for manufacturing a prefabricated part is provided. The heating source moves along the longitudinal direction of the glass rod along with the extension process, and the control unit controls the extension speed, so that the tension before the heating source moves a predetermined distance generally becomes 110% or lower. The average tension of the tension after the heating source moves a predetermined distance. _ Provide a device for manufacturing prefabricated parts. The control unit controls the tension so that the tension before the heating source moves a predetermined distance generally becomes an average tension from 80% to 110% after the heating source moves a predetermined distance. This prescribed distance is generally between 50mm and 150mm. When the heating source moves a predetermined distance, the control unit can control the extension speed to a certain speed. Provided is a device for manufacturing a prefabricated part. A measuring device measures a marked position provided on a connection between a glass rod and any virtual rod as a number, which is connected to either end of the glass rod, and controls The unit controls the heating condition and the extension speed according to the marked position measured by the measuring device. Provided is a device for manufacturing a preform, a measuring device measures a diameter in a plurality of positions along an axis direction of a glass rod as a number, and a control unit according to the diameter in a plurality of positions along an axis direction of a glass rod , Control the extension speed in a plurality of positions along the axis direction of the glass rod, and control the heating condition based on the average diameter of the diameters in the plurality of positions. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the preferred embodiments are described below in conjunction with the accompanying drawings, and described in detail as follows: This paper size applies to the Chinese National Standard (CNS) A4 specifications (21〇X 297 public love) ------------.— 丨 丨 丨 丨 tr · -------- * 5 ^ (Please read the precautions on the back first Fill out this page again) A7 B7 548247 5546pifdl.doc / 008 5. Description of the invention (Simplified description of the drawings: Figure 1 shows a schematic diagram of the first extension device 400 of a traditional glass base material; Figure 2 shows It is a structural diagram of a conventional glass lathe 110; FIG. 3 shows a system diagram of the optical fiber manufacturing device of the present invention; FIG. 4 shows a flowchart of the optical fiber manufacturing method of the present invention; The basic material of the first glass extension structure of the first extension device 900; Figure 6 shows the structure of the first extension device 402, which supports a standard rod through a base material fixing unit 136 to adjust for extension The axis of the glass base material 102; Figure 7 shows the glass base material of Figure 4 A detailed flowchart of the extension process (S204); FIG. 8 shows the structure diagram of the first extension device 402, which supports the standard bar 138 via the extension clip 142; FIG. 9 does not show the first extension The structure diagram of the device 40 is supported by the suspension mechanism I34 and the extension mechanism 14 to support the collimator 138; FIG. 10 does not show the use of an extension wheel. 4 Such as 14 instead of the extension card on the extension mechanism 14 Figure 11 shows an example of clip I42. Figure 11 does not show an example of using extension rollers 144a and 144b to replace the extension clip I42 on the extension mechanism 140. Figure Π shows a schematic diagram of the glass base material 102, its curvature Measured; Figure 13 shows the mechanism of controlling the rotation speed of the extension rollers 144a and 14 through the first extension device 402; 13 (Please read the precautions on the back before filling this page) Φ Order- -------- Line 'Printed by the Consumers ’Cooperative of the Ministry of Economic Affairs and Intellectual Property of the Ministry of Economic Affairs Printed on a paper standard of China National Standard (CNS) A4 (210 X 297 mm) Printed by the Employees’ Cooperative of Intellectual Property of the Ministry of Economic Affairs 548247 Α7 5546pifd 1 .doc / 008 B7 V. Description of the invention丨 \) Figure 14 shows the relationship between the deviation between the center position of the thermally softened area of the glass base material 102 and the extension axis 154 and the curvature of the glass rod 106; Figure 15 shows the relationship between Deformation diagram of the surface of the extension rollers 144a and 144b; Fig. 16 shows the displacement diagram of the metal pipe when the metal pipe system is loaded by the extension rollers 144a and 144b of the batch number 300 in Fig. 15; Shown is the displacement map of the central position of the softened area via the first extension device 402 in the embodiment; FIG. 18 shows when the rotation speeds of the extension rollers 144a and 144b are controlled at the same rotation speed Figure 19 shows the change in the center position of the heat-softened area; Figure 19 shows another embodiment of the burner 176 for the glass rod melting device 370 of Figure 5; Figure 20 shows FIG. 21 is a structural diagram of the glass rod conveying device 380. FIG. 21 shows a schematic diagram of the storage container 224 of the first extension device 402. FIG. 22 shows the glass rod conveying device 380 when the glass rod 106 is conveyed. Fig. 23 shows the glass rod conveying device 380 FIG. 24 shows the movement of the glass rod conveying device 380 in FIG. 23 when the glass rod conveying device 380 conveys the glass rod 10; FIG. 25 shows the present invention. The structural diagram of the second extension device of the glass rod 1 U; FIG. 26 shows a detailed flowchart of the second extension process (82〇6) of the glass rod in FIG. 4; ----------- --------- Order --------- Line- (Please read the precautions on the back before filling this page) ^ Paper ruler & Applies to China National Standard (CNS) Α4 Specification ( 21〇χ 297 Eight Love) '-* --- 548247 S5 46pifdl.doc / 0Q8 V. Description of the Invention () Figure 27 shows the cooling device 33〇 and glass rod second provided on the fixed clip U8 An example diagram of the movable clip U9 of the extension device m; FIG. 28 shows the temperature chart of the fixed clip 118 and the movable clip 119 of the example and the comparative example; and FIG. 29 shows the temperature between The relationship between the distance between the heating source 122 and the diameter measuring device 124 and the percentage change in the diameter of the glass rod 106; Figure 30 shows the structural diagram of the second extension device ni of the glass rod, which has a force measurement device 282; 1 Figure 31 shows a detailed flowchart of the extension process (S154) of Figure 26; Figure 32 shows the process of diameter change during the extension of the glass rod 106; Figure 33 shows It is a process diagram of the glass rod 106 being extended according to the extension process (S154) of FIG. 31; FIG. 34 shows the change of the tension of the glass rod 106 in the early extension stage of the example; FIG. 35 shows The figure shows the tension change of the glass rod 106 during the early extension phase of the comparative example. Figure 36 shows the change of the diameter of the glass rod 106 after the glass rod 106 is extended. The figure shows a detailed flowchart of the tail end pull-out process (S158) of FIG. 26; FIG. 38 shows a schematic diagram of the cutout 284, which detects the tail end pull-out position detection process (S169 of FIG. 37) ), Provided on the connection between the glass rod 106 and the virtual rod 108; This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page ) -------- Order --------- Line: Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

548247 A7 5546pifdl.doc / 008 B7 V. Description of the invention (b) Figure 39 shows a schematic diagram of the mark 287, which is used as a mark between the glass rod 106 and the virtual rod 108. Another example; FIG. 40 shows the schematic diagram of the second extension device 111 of the glass rod for detecting the cutout 284 in the tail-end pull-out position detection process (S169); FIG. 41 shows the figure 37 In the flowchart shown in the flowchart, the movement of the heating source 122 and the tail support platform 116 during the tail end drawing process of the glass rod 106; FIG. 42 shows the drawing process at the tail end of FIG. 37 (S158 ), Another example of the setting method of the tail end pull-out process; > FIG. 43 shows another method of the tail end pull-out process in the tail end pull-out process (S158) of FIG. 37. Another setting example; Fig. 44 shows the structural diagram of the heating source 122 of the second extension device 111 of the glass rod; Fig. 45 shows the plan view of the top of the heating source 122; Fig. 46 shows the reference The relationship between the linear velocity of oxygen and the top temperature of the heating source 122; Figure 47 shows the shape of the tip of the preform 107 Figure, whose diameter is reduced and melted in the process of pulling out the tail end (S158); Figure 48 shows another shape of the tip of the preform 107, and the tail end is extended; Figure 49 shows FIG. 50 is a damage map of the preform 107 before the surface treatment of the preform 107 in the surface treatment process (S168) in FIG. 26; FIG. 50 shows a schematic diagram of the preform 107a, which is subjected to hydrogen fluoride. Acid etching treatment of the examples shown in Figure 51 and Figure 52; Figure 51 shows the number of hydrogen fluoride concaves produced on the preform 107 by counting and comparing the example with the visual inspection example; This paper size applies Chinese national standards (CNS) A4 specification (210 X 297 mm) · (Please read the precautions on the back before filling out this page) Order --------- Line-Printed by the Employee Consumption Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

A

A Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 A7 5546pifdl.doc / 008 B7 Description of Invention (d) Figure 52 shows the preform 1 after the hydrofluoric acid etching process of the example and the comparative example. 7 is an uneven surface; FIG. 53 shows another shape of the surface-treated preform 107; FIG. 54 shows a schematic diagram of an ultrasonic washing device 404 for washing a heating source; and Figure 55 shows the prefabricated --------------------- order --------- line used to extend the preform 107 to manufacture optical fibers. (Please read the precautions on the back before filling in this page.) Description of the symbols of the drawings: 100: heating furnace tube 102: glass base material 104: pull-out clip 106: glass rods 107, 107a, 107b: preforms 108, 342: virtual rod 110: glass lathe 111: glass rod first Extension device 112: Supporting table 114, 116: Rear wiper table 118, 119, 346: Clip 120: Moving bracket 122: Heating source 124: Diameter measuring device 130: Extension furnace 134: Suspension mechanism 136: Fixed base material Unit 138: Standard rod 140: Extension mechanism 142: Extension clips 144a, 144b: Extension rollers 148, 149: Bearing 150: Measuring device 152: Diameter measuring device 1 5 4 '・ Extended axis 156: Diameter control unit 158: Position control unit 176: Burner 178: Flame 190: Hydrogen supply pipe 192: Oxygen supply pipe 194 ·· Ring gas inlet 196: Cooling water The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) Five 548247 A7 S546pifdl.doc / 008 _B7, invention description ((c) printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 198: cooling water supply pipe 200: cooling water discharge pipe 204: feeder 206: extension device 208 : Support leg 210: Rotary table 212: Motor 214: Timing conveyor belt 216: Burner holder 218: Extended melting clip 224: Storage container 234a, 234b, 236a, 236b: Support element 244: Cylinder storage box 245: Movable Supporting element 246: Fixed supporting element 248: Operation switch box 250, 264: Actuator 252: Support frame 254: Manipulator 256, 268: Rotary shaft 257, 258: Shaft nail 260: Tray 262: Pillar 266 ... Coupling shaft 270: Sliding pusher 272: Moving bracket encoder 273: Rear end support frame drive encoder 274: Moving support motor 275: Rear end support frame drive motor 276: Chain 278: Flow controller 280: Control unit 282: Tension Measuring device 284 ·· Incision 285: Outer tube 286: Inner tube 287: Fluorescent paint 288: Oxygen outlet 290: Flammable gas outlet 294: Flame 296: Inert gas passage 298: Inert gas flow rate control unit 300: Valve 30 2 ·· Connecting element 304: Control element 306: Drive source 308: Oxygen channel (please read the precautions on the back before filling this page) Order --------- line Standard (CNS) A4 Format (210 X 297 Kimiyoshi) Ministry of Economic Affairs Intellectual Property Office employees consumer cooperatives printed

312: Flammable gas passage 330: Cooling device 334: Cutting surface 338: Thin portion 346: Clip 348: Heating device 352: Diameter measuring device 356: First correction device 36: Second correction device 370: Glass rod melting Device 39〇: Flame nozzle 394: Oxygen inlet pipe 398: Rinse solution-extension device 4 04: Ultrasonic washing device 548247 A / 5 546 pifd 1 .doc / 008 _ B7 Description of the invention (κ) 310: Oxygen flow rate Control unit 314: Flammable gas flow rate control unit 316: Branch tool 332: Melting section 336: Tapering section 340: Handle 344: Movable support 350: Optical fiber 354: First coating device 358: Second coating Device 362: Traction machine 380: Glass rod transmission device 392: Hydrogen inlet tube 396: Ultrasonic oscillator 400, 900: Glass base material No. -402: First extension device 500: Preform pull-out device 600. : Glass base material generating device 700: Glass base material dewatering and sintering device Detailed description of the present invention The present invention will be explained using examples. However, the following examples do not limit the scope of the present invention as described in the patent application scope. For the present invention, all the features or combinations thereof described in the embodiments are not necessary. Although the present invention has been disclosed in a preferred embodiment, the scope of the present invention 19 The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------------- ------- Order --------- line (please read the notes on the back before filling this page) Printed by the Intellectual Property Bureau Employee Consumer Cooperative of the Ministry of Economic Affairs 548247 A7 5 546 pifd 1 .doc / 008 ny V. Invention description (π) is not limited to these embodiments. Anyone skilled in the art can make various modifications and improvements to the embodiments of the present invention. Such amendments or improvements to the patentable scope of the present invention are also within the protection scope of the present invention. What Figure 3 cannot draw is a system diagram of the optical fiber manufacturing apparatus of the present invention. The system of the optical fiber manufacturing device of the present invention includes a glass base material generating device 600 for generating a glass base material 102 as a base material for an optical fiber; a glass base material dehydrating and sintering device 700 for Dehydrated and sintered glass base material 102;-glass base material first extension device > set 900 for extending the glass base material 102 to produce a glass rod 106; a glass rod transmission device 380 for transmitting the glass rod 106; -A glass rod second extension device 111 for extending the glass rod 106-for a second time to produce a preform 107; and a preform pulling device 500 for pulling out the preform 107 to produce an optical fiber. FIG. 4 shows a flowchart of the optical fiber manufacturing method of the present invention. The glass base material 102 is generated via the glass base material generating device 600 using a VAD method, a vapor axis deposition method, or the like (S200). The glass base material 102 is then dehydrated in a chlorine gas environment and sintered in an inert gas environment via the glass base material dehydration and sintering device 700 (S202). The diameter of the glass base material 102 is generally 110 mm to 200 mm, which is more practical for pulling out optical fibers than the diameter of 30 mm to 80 mm. Therefore, the dehydrated and sintered glass base material 102 is first extended by the first extension device 900 of the glass base material to manufacture a glass rod 106 (S204). The glass rod 106 has a diameter of 3mm to 5mm, which is convenient for pulling out the optical fiber from 30mm to 80mm. The glass rod 106 is transmitted through the glass rod transmission device 380 (S205). The paper size of the glass rod is applicable to China National Standard (CNS) A4 (210 X 297 mm) I ^ 1 ^ 1 ^ 1 ^ 1 ^ 1 ^ 1 ϋ ϋ · ϋ ϋ n I φ 1 · — ft · — I ϋ ϋ ϋ-_, i ϋ ϋ I (Please read the notes on the back before filling out this page) Line-Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247

Fifth, the invention description (6) 106 is then heated and extended to a predetermined diameter through the second extension device lu of the glass rod to produce a prefabricated part 107 (S206). The preform 107 is heated and extended to a similar thin wire form through the preform pull-out device 500 to manufacture an optical fiber (S210). Figure 5 shows the structure of the first extension device 900 for the glass base material. The glass base material first extension device 900 includes a first extension device 402 for heating and extending the glass base material 102, and a glass rod melting device | 370 for melting the glass rod 106. The first extension device 402 has an extension furnace 130 having a heating furnace 100, and a suspension mechanism 134 is provided above the extension furnace 130. The suspension mechanism 134 is used to supply the glass base material 102 to the inside of the extension furnace 130 at a predetermined speed. The first extension device 402 further has an extension mechanism 140 provided under the extension furnace 130 to support the glass rod 10 of the reduced diameter, and the glass rod 106 is pulled out at a prescribed speed. The suspension mechanism 134 has a base material fixing unit 136 for supporting the glass base material 102. The extension mechanism 140 has an extension clip 142 for supporting the glass rod 106. The glass rod melting device 370 has a p-burner 176, a rotating table 210, a conveyor belt 21, a motor 212, a support leg 208, a burner holder 216, an extension device 206, and an extension melting card. Clip 218. The glass base material 102 is mounted on the base material fixing unit 136 and is fed into the heating furnace 100 at a predetermined speed. The glass base material 100 is heated through a heating furnace 100, and then supported and pulled out through an extension clip 142 to reduce the diameter to produce a glass rod 106. The glass rod 106 is pulled out at a speed through the extension device 206 to obtain a suitable diameter 'so that the glass base material 102 is extended to the desired diameter. At the same time, via a diameter measuring device 152

2 I This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) ----------------- I --- Order · ------ -(Please read the notes on the back before filling this page) 548247 5546pifd 1 .doc / 008 A7 B7 5

A Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy Invention Description (A) Measure the diameter of the glass rod 106. In order to extend the glass rod 106 to a desired diameter, the feeder 204, the heating furnace 100, and the extension device 206 are controlled based on the measurement results. After the glass rod 106 is extended to a prescribed diameter and length, a part of it is melted by the burner Π6, and the bubble excluding the bubble or the diameter excluding the bubble is about 0.3 mm or more. The combustion of oxygen and hydrogen is a reasonable burner 176 heating device. Gas combustion based on hydrocarbon fuels such as propane and oxygen can also be used in the burner 176. The burner 176 is mounted on the turntable 210 via a support leg 208. The rotating table 210 is rotated by a driving device such as a motor 212 and a timing belt 214. The rotary table 210 is mounted on the burner rack 216. The glass rod melting device 370 heats the glass rod 106 via a rotary burner 176 to melt the glass rod 106, and extends the glass rod 106 using an extended melting clip 218 having a prescribed speed and pull-out strength. FIG. 6 shows a structural diagram of the first extension device 402, which supports a standard rod 138 through a base material fixing unit 136 to adjust the axis for extending the glass base material 102. The suspension mechanism 134 has a mechanism (not shown) for adjusting the vertical inclination of the base material fixing unit 136. The extension mechanism 14 has a mechanism, and it is not shown in the figure for adjusting the vertical inclination of the extension clip 142. The extension mechanism 140 further has a mechanism, which is also not shown in the figure, and is used to adjust the position of the extension mechanism 14 within the horizontal phase angles of the rear and front and the left and right. Fig. 7 shows a detailed flowchart of the first extension process (S204) of the glass base material of Fig. 4. The first extension process (S204) of the glass base material has a process' for adjusting the extension axis of the brother-extension device 402. First of all, a paper size applies the Chinese National Standard (CNS) A4 specification (2i0x 297). --11 i ^ w— (Please read the notes on the back before filling out this page) 22 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 A7 5 546pifd 1 .doc / 008 B7 V. Description of Invention (γ) Metal or The ceramic rod is formulated as a standard rod 138. The linear standard rod 138 needs to be guaranteed. The standard rod 138 usually has a length of a glass base material 102, and the virtual rod is connected to the glass base material 102. The linear axis of the standard rod 138 is guaranteed to be along the full length. As shown in Figure 6, the standard material 138 (S110) is supported by the base material fixing unit 136 of the suspension mechanism 134. Next, the suspension mechanism 134 is adjusted. The inclination A makes the direction of the standard rod 138 conform to the vertical direction (S112). Then, after the adjustment process is completed, the standard rod 138 1 is removed from the base material fixing unit 136 (S114). Figure 8 shows the first Schematic diagram of the extension device 402, which supports the standard rod 138 via an extension clip 142. Via the extension mechanism 140 The extension clip 142 supports the standard rod 138 (Fig. 7, S116). Then, the inclination B of the extension mechanism 140 is adjusted so that the direction of the standard rod 138 conforms to the vertical direction (Figure 7 'S118). At the same time, the extension clip is made. 142 maintains the approximate approximate center of the standard bar 138. The steps of adjusting the suspension mechanism 134 and the extension mechanism 140 can be reversed. The extension mechanism 140 can be adjusted first, and then the suspension mechanism 134 can be adjusted. Figure 9 shows The architecture diagram of the first extension device 402 supports the standard bar 138 via both the suspension mechanism 134 and the extension mechanism 140. After completing the adjustment steps of the suspension mechanism 134 and the extension mechanism 140, the standard is supported by the base material fixing unit 136 Pole 138, and the bottom end of the standard pole 138 will be supported by the extension clip 142 (Figure 7, S120). Next, adjust the horizontal position c of the extension mechanism 14 or the horizontal position C of the suspension mechanism 134. So that the horizontal difference between the vertical axis and the standard bar 138 is less than 0.5111111 per length (Figure 7, S122). Subsequently, the glass base material 102 φ is extended by using the first extension device 402 (please first Read back (Please fill in this page again before the page) -------- Order -------- line. This paper size applies to China National Standard (CNS) A4 (210 x 297 mm) Intellectual Property of the Ministry of Economic Affairs Printed by the Consumer Cooperatives of the Bureau 548247 A7 5546pifdl.doc / 008 B7 V. Description of the invention (7 丨) To produce a glass rod 106, the extension axis will be adjusted (Figure 7, S124). Finally, the glass rod 106 is melted via the glass rod melting device 370 (Fig. 7, S126). 10 and 11 show exemplary diagrams of using the extension rollers 144 a and 144 b on the extension mechanism 140 instead of the extension clip 142. If the extension rollers 144a and 14 are used to adjust the vertical inclination of the axis connecting the suspension mechanism 134 and the extension mechanism 140, the following method can be adopted. The standard rod 138 is supported via the extension rollers 144a and 144b relative to the standard rod 138 via the extension clip 142 (FIG. 7, S116). Subsequently, the inclination of the extension mechanism H0 is adjusted by adjusting the horizontal inclination of the straight line F. The straight line F connects two rotation axes between the extension rollers 144a and 14 flutter. After the step of adjusting the inclination of the extension mechanism 140 (FIG. 7, S118), the extension rollers 144 a and 144 b can vertically support the standard rod 138. Then "as in Figure 11" in this step, the standard rod 138 supported by the base material fixing unit 136 of the suspension mechanism 134 and the extension rollers 144a and 144b of the extension mechanism 140 corresponds to the base material fixing unit 136 and & gt Extend the standard bar 138 supported by the clip 142 (Figure 7, S120). Next, the vertical inclination E of the axis connecting the suspension mechanism 134 and the extension mechanism 140 is adjusted. This adjustment step can be completed by adjusting the position of the extension mechanism 140 in the horizontal direction or adjusting the position of the suspension mechanism 134 in the horizontal direction. This step corresponds to the step of adjusting the horizontal position of the suspension mechanism 134 and the extension mechanism 140 (No. 7 (S122). Using the above adjustment method, the vertical inclination of the axis connecting the suspension mechanism 134 and the extension mechanism 140 can be easily adjusted. This method is not only suitable for extending the straight glass base material 102, but between the virtual rod and the glass base material 102. 24 (Please read the precautions on the back before filling this page) Φ Order --------- line . This paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 public love) 548247 5546Difd1 doc / 008 A7 B7 V. Description of the invention) There will be no gaps, and it is suitable for extended bending glass base material 102. A glass rod 106 having a reduced diameter in a desired linear state range was obtained. It is possible to provide the glass base material 102 to be connected to the virtual rod, and there is no gap between the glass base material 102 and the axis of the virtual rod. For the method of supporting the glass base material 102 via the suspension mechanism 134, the extension mechanism 140, or both, the first extension device 402 can accurately adjust the vertical tilt of the extension axis.丨 Therefore, the bending moment that causes the bending in the heat-softened area of the glass base material 102 can be reduced. The bending caused by the width of the extended glass base material 102 is related to the extension mechanism 140. The glass base material 102 can thus be extended within a desired linear state range without creating a gap between the glass base material 102 and the axis of the virtual rod. Figure I2 shows a schematic view of the glass base material 102, and its curvature is measured. The glass base material 102 is extended through the extension device 402, and its vertical tilt is adjusted through the above-mentioned adjustment method. Next, the curvature of the glass rod 106 was measured. First, the glass rod 106 is placed on the two bearings 148 and H9 horizontally installed so that the straight connection can be the top of the bearings 148 and 149 of a standard line. Next, the maximum or minimum height of the height is measured from the standard line using a device such as a scale measuring device along the glass rod 106 via the scanning measuring device 150. Next, the glass rod 106 is rotated 180 degrees, and the maximum and minimum heights of the height are measured from the standard line in the same way. The maximum value between the difference between the first measurement maximum and the minimum measurement value or the minimum measurement between the first measurement minimum value and the next measurement maximum value is set to "2h". This frame is divided into "h" by the length L1, which is the distance between the two bearings 148 and 149, which represents the linear state of the glass rod ιο per unit length. ______________ (Please read the notes on the back before filling out this page) Order --------- Line 'Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 25

548247 A7 5 546 nifd 1 .doc / 008 B7 five

A

A Description printed by the Intellectual Property Bureau's Consumer Cooperatives of the Ministry of Economic Affairs. 5) The glass base material 102 with a virtual rod and a seamless five-segment straight line will be extended by the first extension device 402 on an adjusted extension axis to produce 5 segments Glass rod 106. The linear state of each glass rod 106 is measured by the method shown in FIG. The "h" of the glass rod 106 are all within 0.5 mm. Then, the glass rod 106 is extended by the first extension device 402 without adjusting the extension axis. On average, 90% of the glass rods 106 are curved, meaning that the glass rods 106 need to be corrected by adjusting the extension axis. FIG. 13 shows a mechanism diagram for controlling the rotation speed of the extension rollers 144a and 144b via the first extension device 402. The first extension device 402 controls the rotation speed of each extension roller 144a and 144b, respectively. The glass base material 102 is suspended through the base material fixing unit 136 of the first extension device 402, and is sent to a heating furnace (not shown in the figure) at a predetermined speed. The glass rod 106 is heated and softened by the heating furnace, and is grasped by a pair of extension rollers 144a and 144b. By measuring the diameter of the heat-softened area of the glass base material 102 using the diameter measuring device 152, the center position of the heat-softened area of the glass base material 102 can be obtained. At the same time, the center position of this measured diameter can be calculated. A laser beam transmission type diameter measuring device is used as the diameter measuring device 152. This laser beam passes through a window provided on the lower part of the heater in the heating furnace, and is irradiated on the heat-softened area of the glass base material 102. This measured diameter is input to the diameter control unit 156 to calculate the difference 値 between the target diameter 値 and the measured diameter. The rotation speed of the extension roller 144a is controlled based on the calculated difference in diameter. Then, the information at the center position of the heat-softened area is input to the position control unit 158. The position control unit 158 calculates the center position between the thermally softened area and the --------------------- order --------- line (please first Read the notes on the reverse side and fill out this page) 26 This paper is a Chinese national standard (CNS) A4 specification (210 X 297 public love) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 A / 5546pifd 1 .doc / 008 B7 5. Description of the invention) A deviation number between the extension axes 154 of the extension device 402. The position control unit 158 further calculates the correction of the rotation speed, which can reduce the number of deviations between the center position of the thermally softened region and the extension axis 154 to the actual zero point. Next, the position control unit 158 controls the rotation speed of the extension roller 144b based on the increased correction value 値 and the rotation speed of the extension roller 144a. FIG. 14 shows the relationship between the number of deviations between the center position of the heat-softened area of the glass base material 102 and the extension axis 154 and the curvature caused by the glass rod 106. Between the thermally softened regions of the glass base material 102 > The number of deviations between the center position and the extended axis 154 is large, and the result bent in the glass rod 106 is large. When the number of deviations is large, the thermoelectric resistance elements on the surfaces of the extension rollers 144a and 144b are deformed. The shapes of the extension rollers 144a and 144b may be slightly different from each other. As a result, the rotation speeds of the surfaces of the extension rollers 144a and 144b are different from each other. If the deformation of the surfaces of the extension rollers 144a and 144b is one of the causes of the bending of the glass rod 106, the bending of the glass rod 106 can be reduced by controlling the rotation speed of each extension roller 144a and 144b separately. > The surfaces of the extension rollers 144a and 144b are formed of a thermal resistance material such as non-asbestos or asbestos. These materials are thermally resistive and flexible 'so that the extension rollers 144a and 144b can easily extend the glass rod 106 at high temperatures. The surfaces of the extension rollers 144a and 144b that contact the glass rod 106 are gradually deformed by the high temperature and pressing force or the friction force of the glass rod 106. Because the deformations of the extension rollers 144a and 144b are gradually different from each other, the rotation speeds of the surfaces of the extension rollers 144a and 144b will also be different. Fig. 15 shows a deformation view of the surfaces of the extension rollers 144a and 144b. The outer shape of the extension roller 144a and the outer shape of the extension roller 144b are 27. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love). 1 ϋ I ^ 1 1 ^ 1 ^ 1 ϋ ϋ ϋ III · ▲ (Please read the notes on the back before filling out this page) Printed by the Employee Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

548247 A7 ς ^ zl ^ nifd 1 .doc / 008_B7 The invention description (household) is different. The number of batches is the number of glass base materials 102 'which are all extended. If the number of batches increases, deformation and wear increase. As a result, the extension number between the extension rollers 144a and 144b will be different, causing the position of the heat-softened area of the glass base material 102 to change, and sequentially causing the glass rod 106 to bend. Fig. 16 shows a displacement diagram of the center position of the heating area of the metal pipe when the metal pipe system is loaded by the extension rollers 144a and l44b of 300 batches shown in Fig. 15. The vertical axis represents the displacement of the center position of the heated area of the metal tube, and the horizontal axis represents time. A curve A represents a change in the number of deviations in the rotation directions of the extension rollers 144a and 144b. Curve A shows that during a single rotation of the extension rollers 144a and 144b, the displacement thereof varies greatly. The curve B does not show that in the direction of the axis of the extension roller 14 such as 14b, the change in displacement is very small. Fig. 17 shows a displacement map of the center position of the heat-softened area via the first extension device 402 in the embodiment. The vertical axis represents the displacement of the center position of the heat-softened area of the glass base material 102, and the horizontal axis represents the time from the start. After 15,000 seconds of the initial extension, the displacement of the heat-softened area is controlled and maintained at a small level. Therefore, by controlling the rotation speed of each of the extension rollers 144a and 144b separately, a glass rod 106 without physical bending can be manufactured. This allows the center position of the heat-softened area to be maintained in a relatively fixed point. (Comparative example) Fig. 18 is a graph showing the change in the center position of the heat-softened area when the rotation speeds of the extension rollers H4a and 144b are controlled at the same rotation speed. • The vertical axis represents the displacement of the center position of the thermally softened area of the glass base material 102, and the horizontal axis represents the time from the beginning of the extension. 28 This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page) Φ Order --------- Line · Ministry of Economics Intellectual Property Printed by Bureau Consumers Cooperative

548247 ^ A / 5546pifd 1 .doc / QOR B7 Description of the invention) By measuring the diameter of the heat-softened area of the glass base material 102 by using the same diameter measuring device 152 of FIG. 17, a glass having a predetermined diameter can be manufactured Rod 106. The rotation speeds of the extension rollers 144a and 144b are controlled at the same rotation speed with each other. The change in the center position of the heat-softened area is so large that the bending caused by the extended glass rod 106 needs to be corrected. Fig. 19 shows another embodiment of the burner 176 used in the glass rod melting device 370 of Fig. 5. The annular burner 176 has a hydrogen supply pipe 190 and an annular gas inlet 194, both of which are connected to an oxygen supply pipe 192. The cooling water 196 is connected to the cooling water supply pipe 198 and the cooling water discharge pipe 200, and it is provided on the outer area of the annular burner 176. The annular gas inlet 194 may be a single layer for ejecting a mixture of hydrogen and oxygen. The annular gas inlet 194 may also be multi-layered or triple-layered, which ejects hydrogen from the upper and lower layers and oxygen from the middle layer. After hydrogen and oxygen are supplied to the ring burner 176 and burned, the glass rod 106 is placed inside the ring of the ring burner 176. The surface of the glass rod 106 is melted by the flame 178. The annular burner 176 can effectively heat the glass rod 106, so it is not necessary to excessively heat the glass rod 106. Therefore, when the glass is heated to a temperature above 2000 degrees Celsius, the opaque areas on the glass surface cannot be seen on the melting surface of the glass rod 106. According to the above embodiment, the glass rod 106 is melted. A glass base material 102 having a diameter of 120 mm is heated by a ring burner 176 for ten minutes. Hydrogen will be supplied to the annular burner 176 at a rate of 300 liters / minute and oxygen at a rate of 20 liters / minute. When the glass rod 106 is melted, the glass rod 106 is melted by extension. The melting surface of the glass rod 106 will change to the shape of a round rudder. The color of the surface of the glass pole 6 is transparent. (Please read the precautions on the back before filling this page). Customized --------- Line-This paper size applies to China National Standard (CNS) A4 (210 χ 297 mm) 548247 A7 B7 1546pjfd 1 dor / 00 «V. Description of the Invention (/ 1) Fig. 20 shows a structural diagram of a glass rod conveying device 380. The glass rod conveying device 380 is used for conveying the glass rod 106 produced through the first extension device 402. The glass rod 106 is supported by a movable support member 245 and a fixed support member 246 mounted on the cylinder storage box 244. When a cylinder (not shown) in the cylinder storage box 244 is driven, the movable support element 245 moves toward the fixed support element 246 to support the glass rod 106. The amount of force _ by which the movable support element 245 pushes the fixed support element 246 can be modified by modifying the air pressure flowing into the cylinder. During the transmission of the glass rod 106, the cylinder pressure can be modified by operating a switch. This switch is provided on the operation switch box 248. This embodiment has a second thrust level for pushing the movable support element 245 to the fixed support element 246. This can be achieved by adjusting one of the two possible levels of air pressure into the cylinder. For example, the weak side of the thrust pushing the movable supporting element 245 to the fixed supporting element 246 is the first supporting force, and the strong side of the thrust is the second supporting force. The first support force was set at 0.5 kg, and the second support force was set at 80 kg. There are only two adjustment levels for the cylinder air pressure adjustment. The pressure adjustment can be a multi-level adjustment type to adjust the air pressure more than three levels, or a continuous adjustment type to provide a stepwise level change. The rotating actuator 250 rotates the movable support member 245 and the fixed support member 246 through the cylinder storage box 244, and is used to rotate the glass rod 106 from a vertical state to a horizontal state. A holding flame 252 supports the glass rod conveying device 380 by connecting the glass rod conveying device 380 and the first extension device 402. A handle 254 is used to operate the glass rod conveying device 380. The rotation shaft 256 is used to rotate the cylinder storage box 244. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) -------------.— I ---- Order --------(Please (Please read the notes on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ΙΛΙ Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 A7 5 546pifd 1 .doc / 00 8 B7 V. Description of the invention Meaning) FIG. 21 is a schematic diagram of the storage container 224 of the first extension device 402. The storage container 224 has a tray 260, a pillar 262, a pair of support members 234a and 234b to support the glass rod 106, and a pair of support members 236a and 236b are provided under the support members 234a and 234b. The support elements 234a, 234b, 236a, and 236b are generally semi-circular, and they surely support the glass rod 106 within the storage container 224. Each other, each pair of support elements 234a and 234b and support elements 236a and 236b form a circular support element. One end of each of the supporting members 234a and 234b and the supporting members 236a and 236b is pivotally connected to the pillar 262. The other end is connected to a corresponding pair of supporting elements via a shaft pin 257 or a shaft pin 258. The support elements 234a and 234b are connected via a shaft pin 257, and the support elements 236a and 236b are connected via a shaft pin 258. The height of the pillar 262 is 1550 mm. The inner diameter of the tray 260 is 300 mm. The inner diameter of each support element is 180 mm, which is formed via the support element pairs 234a and 234b and the support element pairs 236a and 236b. In the receiving storage container 224, the glass rod 106 has an external diameter of 80 mm, and the angle of inclination α between the pillar 262 and the glass rod 106 can be in the range of -3.1 degrees to + 8.1 degrees. The angle of inclination 0 between the glass rod 106 and the pillar 262 can range from -5.9 degrees to +5.9 degrees in the left and right directions. Here, the angle of inclination is a finite angle within which the glass rod 106 can be received in the storage container 224 at various angles. The glass rod 106 is located within the storage container 224 at various angles. Fig. 22 is a diagram showing the movement of the glass rod conveying device 380 when the glass rod 106 is conveyed. The glass rod 106 in the storage container 224 is supported by a movable supporting member 245 having a first supporting force and a fixed supporting member 246 (b). Next, the glass rod 106 will be moved so that the glass rod 106 stands vertically ------------- 螓 (Please read the precautions on the back before filling this page) Order ----- ---- Line ^ This paper size applies to China National Standard (CNS) A4 (210 X 297 public love) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 A7 5546pifdl.doc / 008_ B7 V. Description of the invention (A) To the ground within the support elements 234a and 2Mb (c). Because the first supporting force is very weak, during the movement of the glass rod 106, when the force is greater than the first supporting force supplied to the movable supporting element 2U, the movable supporting element 245 will be opened. Moreover, the friction force between the movable support element 245 and the glass rod 106 will act, and the friction force between the fixed support element 246 and the glass rod 106 is small relative to the weight of the glass rod 106 . Therefore, the glass rod 106 is supported by the first supporting force so that the glass rod 106 cannot be lifted by the glass rod conveying device 380. After it is determined that the glass rod 106 stands vertically, the supporting force of the glass rod conveying device 380 is changed to the second supporting force (d). Then, the pins 257 and 258 are removed, and each of the supporting members 234a and 23 and the supporting members 236a and 236b are opened. Then, the glass rod conveying device 380 grasps the glass rod 106 and transfers it out of the storage container 224. The glass rod 106 removed from the storage container 224 is rotated to a horizontal position and placed on a storage place. During the horizontal placement of the glass rod 106 on the storage site, an air pressure greater than a certain pressure will be supplied to the cylinder 'to raise and lower the glass rod conveying device 380. Therefore, the weight of the glass φ rod conveying device 380 is not supplied to the glass rod 106 to prevent the glass rod 106 from being injured. FIG. 23 illustrates another embodiment of the glass rod conveying device 380. The glass rod conveying device 380 of this embodiment has two rotation mechanisms A and B. Each rotation mechanism A and B has a rotation actuator. The rotation mechanism A rotates the glass rod 106 by rotating a rotation shaft 256 through a rotation actuator 250. The rotation mechanism B rotates a rotation shaft 268 through the rotation actuator 264, and moves the glass rod 106 up and down or left and right through the connection shaft 266. The rotation axis 268 lies horizontally or vertically at right angles to the rotation axis 256. 32 This paper size applies to China National Standard (CNS) A4 specification (210 X 297 public love) (Please read the precautions on the back before filling this page) Φ Order --------- Line 1 A7 B7 548247 5546pifd 1. .doc / 008 5. Description of the invention (>) (Please read the notes on the back before filling this page) Figure 24 shows the glass of Figure 23 when the glass rod conveying device 380 conveys the glass rod 106 Movement diagram of the rod conveying device 380. Figure 24 (a) is a plan view showing the glass rod conveying device 380, which supports the glass rod 106. Figure 24 (b) is a cross-sectional view showing a glass rod conveying device 380, which conveys the glass rod 106 to the V block 240. As shown in FIG. 24 (a), the movable supporting members 245 and 246 support the glass rod 106 vertically, and the glass rod 106 can be rotated from the vertical position to the horizontal position by operating the rotation actuator 250. Next, as shown in No. 24 (b), the movable support member 245 and the fixed support member 246 are rotated downward by activating the rotary actuator 264. By activating the rotary actuator 264, the opening and closing directions of the movable supporting member 245 are changed from a vertical direction to a horizontal direction. Therefore, after the movable supporting element 245 is opened and the glass rod 106 is placed on the V block 240, the movable supporting element 245 and the fixed supporting element 246 can be released upward. By including not only the rotating mechanism A to rotate the glass rod 106 from a vertical to a horizontal position, but also the rotating mechanism B having another rotation axis 268 lying at right angles to the rotation axis 256, thereby increasing the transmission efficiency of the glass rod 106. Fig. 25 shows a frame printed by the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs of the frame of the second extension device 111 of the glass rod of the present invention. The second extension device 111 of the glass rod includes a bracket 112, a fixed clip 118, a movable clip 119, a heating source 122, a flow controller 278, end support frames 114 and 116, and a end support frame. Drive motor 275, a tail end support frame drive encoder 273, a diameter measuring device I24, a mobile stand 120, a sliding pusher 270, a mobile stand motor 274, a mobile stand encoder 272, a chain 276 and a Control unit 280. The fixed clip 118 and the movable clip Π9 support the glass rod 106, and a virtual rod 108 is connected to each end thereof. The heating source 122 heats the glass rod 106 supported by the fixed card 33 A7 B7 548247 5546pifd 1 .doc / 008 5. Description of the invention (M) The clamp 118 and the movable clamp 119. The flow controller 278 adjusts the amount of gas supplied to the heating source 122. By moving the movable clamp 119, the tail end support frame 116 extends the glass rod 106. The tail end support frame driving motor 275 drives the tail end support frame 116. The tail end support frame drive encoder 273 detects the number of rotations and controls the speed of the tail end support frame drive motor 275. The moving distance of the tail end support frame 116 can be estimated from the number of rotations of the tail end support frame drive motor 275 detected by the tail end support frame drive encoder 273. The diameter measuring device 124 measures the diameter of the glass rod 106 corresponding to a position along the axis direction of the glass rod 106. The heating source 122 and the diameter measuring device 124 are provided on the moving bracket 120. The moving bracket i20 moves the heating source 122 and the diameter measuring device 124. A mobile stand 120 is provided on the pallet U2. The moving bracket 12G can be moved along the sliding pusher 270, and it is installed parallel to the axis connecting the fixed clip 118 and the movable clip 119. The mobile stand 12 () is driven via the slide pusher 270 via the mobile stand motor 274. The moving bracket encoder 272 controls the speed of the moving bracket motor 274. The control unit 280 controls the moving distance of the heating source 122 by controlling the moving bracket encoder 272, the moving bracket motor 274, the chain 276, the sliding pusher 270, and the moving bracket 120. The control unit 280 controls the amount of gas supplied to the heating source 122 via a control flow controller 278. The control unit 28 controls the movement speed of the tail end support frame 116 by controlling the tail end support frame drive encoder 273, and the tail end support frame drive encoder 273 is used to control the rotation speed of the tail end support frame drive motor 275. The control unit 280 controls the extension speed of the glass rod 106 by controlling the moving speed of the tail support frame 116. Tail end brackets 114 and 116, fixed clip 118, movable clip 119, tail end bracket drive motor 275 and tail end bracket drive encoder 273 (Please read the precautions on the back before filling out this page) I ---- 1 --- ^ ------- I ». Printed clothing lx 297 mm by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs) 34 548247 A7 B7 S S46pifd 1 .doc / 008 V. Description of the invention (Ii) An extension unit for extending the glass rod 106. The measured diameter and position data can be measured by the diameter measuring device 124, and the data on the length change of the glass rod 106 can be input from the moving distance of the tail support 116 in the control unit 280. Come to get. The control unit 280 controls the heating condition based on input data such as the moving distance of the heating source 122 and the amount of gas provided to the heating source 122, and also controls the extension speed of the tail end support frame 116 based on the input data. Fig. 26 shows a > detailed flowchart of the second extension process (S206) of the glass rod of Fig. 4. First, the virtual rod 108 is supported via a fixed clip 118 and a movable clip 119. Subsequently, both ends of the glass rod 106 are connected to the virtual rod 108 (S146), so that the glass rod 106 is placed on the glass rod second extension device 111. Next, a 3mm deep cut 284 is made as the same mark on the connection between the glass rod 106 and the virtual rod 108. Next, the start and finish positions of the diameter measurement of the glass rod 106 and the target diameter are set (S150). The diameter of the glass rod 106 corresponding to the position along the axis of the glass rod 106 is measured (S152). Based on the measured diameter and the position corresponding to the measured diameter, the extension speed is set at a plurality of positions along the axis direction of the glass rod 106. Based on the average diameter of the diameter of the glass rod 106, a heating condition including the amount of gas supplied to the heating source 122 and the moving distance of the heating source 122 is set (S153). The glass rod 106 is heated by a heating source 122 having a preset heating condition, and gradually extended by a tail end support frame 116 having a preset extension speed. In order to detect the positions of the two ends of the glass rod 106, the diameter measuring device 124 then detects the position of the cutout 284 provided around the connection between the glass rod 106 and the virtual rod 108. In order to measure the length of the glass rod 106 along the axis direction, the paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love).-. 气 -------------- ------ Order --------- line (Please read the notes on the back before filling out this page) Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 A7 sS46oifdl .doc / 008_B7 V. Description of the invention) The encoder 273 is driven by the tail support to measure the movement distance of the tail support II6. Next, the diameter of the glass rod 106 is measured at a position about 50 mm away from the cutout 284 toward the center of the glass rod 106 (S156). The heating position of the heating source 122 is set based on the position of the cutout 284 and the length change of the glass rod 106 along the axis direction. The amount of gas provided to the heating source 122 is set according to the measurement diameter. The moving speed of the tail end support frame Π6 is set according to the measured diameter (S157). The glass rod 106 is heated and extended under a preset heating condition and extension speed, so that the glass rod 106 is pulled out by the tail end. The shape of the trailing end of the glass rod 106 thus becomes a cone-like shape, so that the diameter of the trailing end of the glass rod 106 is reduced (S158). Then, the position of the tail-end drawn portion is detected by measuring the diameter of the tail-end drawn portion, and the portion is extended by pulling out at the corresponding end of the tail-end portion. The change in the length of the glass rod 106 along the axis direction is caused by pulling the tail end of the encoder 273 to measure through the tail end support frame (S160). Then, the start and finish positions of the flame polishing for polishing the glass rod 106 with the flame and the heating power of the flame are set. This setting is based on the change in the detection position φ of the pulled-out part of the tail end and the length of the glass rod 106 along the axis direction (S161). According to the position of the black shadow on the glass rod 106, the positions for starting and completing the flame honing are set. During the tail-end pull-out process, black shadows are generated in one of the areas that is strongly heated. The glass rod 106 is flame-honed by the heating source 122 as each preset flame condition from the set flame honing start position to the set flame honing completion position (S162). After flame honing, the shape of the glass rod 106 is checked by measuring the completed diameter and length of the glass rod 106 (S164). The virtual pole 108 is then removed from the glass pole 106 (S166). Finally, the glass rod 106 is subjected to surface treatment to produce a preform 107 (S168). 36 -------------------- Order --------- AW (Please read the notes on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 Specification (21〇χ 297 mm) 548247 Αί 5546pifdl.doc / 008 B7 V. Description of the Invention (Machine) As mentioned above, at each extension (S154), tail end pull out (S158) and Before the flame honing process (S162), the diameter is measured at a corresponding position along the axis of the glass rod 106. From this data, the heating condition and extension speed for the next process can be accurately set. Therefore, a stable and high-quality glass rod 106 can be manufactured. FIG. 27 shows an exemplary diagram of the cooling device 330 provided on the fixed clip 118 and the movable clip 119 of the second extension device 111 of the glass rod. The cooling device 330 protects the fixed clip 118 and the movable clip 119 to exclude radiant heat generated from the heat source 122. This can be achieved by circulating cooling water around the fixed clip 118 and the movable clip 119. The cooling device 330 uses a gas or a liquid as a cooling medium. The cooling device 330 can be provided on the fixed clip 118 and the movable clip 119 to control the deformation of the fixed clip 118 and the movable clip 119. This allows controlling the temperature rise of the fixed clip 118 and the movable clip 119. Therefore, the transmission accuracy of the driving force of the rotating glass rod 106 is maintained, and the heating effect of the glass rod 106 becomes more equal. Therefore, the variation > of the diameter of the glass rod 106 is reduced. (Example) A glass rod 106 with a diameter of 50 mm and a length of 1000 mm is hoared through a fixed clip 118 and a movable clip Π9 'having a cooling device 330 and a heating source 122 as shown in FIG. 27. 150 SLM oxygen ( 02) and 300 SLM hydrogen (H2) is supplied to the heating source 122 as a combustion gas. The glass rod 106 is rotated at a speed of 15 i * pm. The glass rod 106 was flame-honed by the moving heating source 122 at a speed of about 20 mm / min. Figure 28 shows the fixed card of the above example and the following comparative example. (Please read the precautions on the back before filling this page.) Order --------- Line · Intellectual Property Bureau Staff, Ministry of Economic Affairs The paper size printed by the consumer cooperative is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) A7 548247 SS46pifH1 doc / OOR ___ B7_____ 5. The temperature chart of the invention description folder 118 and the removable card holder 119. The vertical axis represents the temperature of the fixed clamp 118 and the movable clamp 119, and the horizontal axis represents the flame honing time. The temperature of the exemplary fixed clip 118 and the movable clip 119 is maintained at a low temperature of about 45 degrees (45 ° C). Through the small deformation of the fixed clip 118 and the movable clip 119, the driving force of the rotating glass rod 106 is changed. Therefore, the diameter variation of the flame-honed glass rod 106 is only 0.02%. (Comparative example) In the case where the cooling device 330 is removed from the fixed clip 118 and the movable clip 119 of Fig. 27, the glass rod 106 is honed by flame under the same conditions as the above example. As shown in FIG. 28, the temperature of the fixed clip 118 and the movable clip 119 reaches about 100 degrees Celsius. As the fixed clip 118 and the movable clip 119 are deformed, the driving force of the rotating glass rod 106 is changed. After the flame honing is increased to 1.0%, the variation in the diameter of the glass rod 106 will be greater than the variation in the above example. FIG. 29 shows the relationship between the φ distance between the heating source 122 and the diameter measuring device 124 and the percentage change in the diameter of the glass rod 106. The change rate (%) of the diameter of the glass rod 106 represents (the maximum diameter of the glass rod 106-the minimum diameter of the glass rod 106) / (average diameter) x 100. The diameter measuring device 124 of the second extension device 111 of the glass rod shown in Fig. 25 is provided at a position which is a certain distance from the heating source 122 from 10 mm to 50 mm. Therefore, the diameter of the glass rod 106 can be accurately measured, allowing the diameter of the glass rod 106 to be accurately controlled. When the glass rod 106 is extended, the position of the highest temperature of the glass rod 106 will be slightly different from the position 38 heated by the heating source 122 due to the movement of the heating source 122 (Please read the precautions on the back before filling this page). -------- Line-Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The paper size applies to the Chinese National Standard (CNS) a4 (210 x 297 mm) 548247 A7 5 546pifd 1 .doc / OOR B7 5 , Invention description () set. In the position of the highest temperature of the glass rod 106, the extension speed per unit becomes the maximum. It is desirable to control the heating power of the heating source 122 and the moving speed of the movable clip 119 based on the diameter and the diameter target of the position of the maximum extension speed. The moving speed of the movable clip 119 is controlled based on the difference between the diameter target 値 and the diameter measured at the position of the maximum extension speed of the glass rod 106. This can be accomplished by providing a diameter measuring device 124 at a distance from the heating source 122. > The above-mentioned position at a certain distance from the heating source 122, which ranges from 10 mm to 50 mm from this position, wherein the heating source 122 is provided in a direction opposite to the moving direction of the heating source 122. Therefore, the diameter measuring device 12 is provided at a position from 10 mm to 50 mm from the heating source 122, wherein the heating source 122 is located in a direction opposite to the moving direction of the heating source 122. If the heating is used to heat the glass rod 106 The source 122 is a hydrogen-oxygen burner, and the flow rate of hydrogen gas supplied to the heating source 122 is set from 30 liters / minute to 500 liters / minute. The ratio of the flow rate of hydrogen to oxygen is set from 1.5 to > 3.0 The moving speed of the heating source 122 is controlled within the limits of 2mm / min and 65mm / min. If the flow rate of hydrogen is less than 30 liters / minute, the heating amount will be insufficient, and if the flow rate of hydrogen is more than 500 Liters / minute, the fuel will be wasted. If the ratio of the hydrogen to oxygen flow rate is outside the above range, it will be difficult to extend the glass rod 106 at this time due to insufficient heating. If the heating source used to heat the glass rod 106 122 is a propane gas burner, and the flow rate of the propane gas supplied to the heating source 122 is set from 1 liter / minute to 15 liters / minute. The ratio of the flow rate of the propane gas to the oxygen is set from 0.1 to 0.3. Heat source 122 shift The speed is controlled at 2mm / min and 65 39 ______________ (Please read the precautions on the back before filling this page) Order ------- line 'Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Consumer Cooperatives This paper is applicable to China Standard (CNS) A4 specification (21,297 mm) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 S S46pifd 1 .doc / 008 5. The invention description (β) is within the limit of mm / min. If the flow of propane gas If the rate is less than 1 liter / minute, the heating amount will be insufficient, and if the flow rate of propane gas is more than 15 liters / minute, the fuel will be wasted. In addition, if the ratio of the flow rate of propane gas to oxygen is as described above Outside the range, it is difficult to extend the glass rod 106 at this time due to insufficient heating. The moving speed of the heating source I22 is preferably controlled within the limits of 2mm / min and 65mm / min. If the moving speed of the heating source 122 is low At 2mm / min, it takes more time to extend the glass rod 106 ° relatively. 'If the moving speed of the heating source 122 is higher than 65mm / min, because the speed of heating the glass rod 106 to its center is too fast Will be difficult at this time Extend the glass rod 106. (Example 1) By setting the distance between the heating source 122 and the diameter measuring device 124 to 15 mm, the extension of the glass rod 106 is started. During the extension of the glass rod 106, the glass rod 10 is extended. 6 The difference between the measured diameter and the target diameter 'controls the moving speed of the heating source 122 and the tail end support frame 116. The combustion conditions of the heating source 122 are set to include a hydrogen flow rate of 224 liters / minute' hydrogen to oxygen The rate ratio is 2.5, and the moving speed of the heating source 122 is 11 mm / min. The change rate of the diameter of the glass rod 106 was 0.9% after the extension process. 1 (Example 2) The distance between the heating source 122 and the diameter measuring device 124 is set to 40 mm. The flow rate of hydrogen was set at 199 liters / minute. The ratio of hydrogen to oxygen flow rate is set to 2.5. The moving speed of the heating source 122 is set to 13 mm / min. The rate of change in the diameter of the glass rod 106 was 0.6% after the extension process. (Comparative Example 1) The distance between the heating source 122 and the diameter measuring device 124 was set to 5 mm. The flow rate of hydrogen was set at 209 liters / minute. The ratio of the flow rate of hydrogen to oxygen 40 This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 public love) (Please read the precautions on the back before filling this page) _ · Order ------ --- Line · 548247 ^ Αί ς ς Λή nif Η 1 Hnr / 008_Β7 5. The description of the invention (β) is set to 2.5. The moving speed of the heating source 122 is set to 12 mm / min. Because the distance between the heating source 122 and the diameter measuring device 124 is too close, the rate of change in the diameter of the glass rod 106 after the extension process is 3.7%. This is greater than the rate of change of Examples 1 and 2 above. (Comparative Example 2) The distance between the heating source 122 and the diameter measuring device 124 was set to 60 mm. The flow rate of hydrogen was set at 237 liters / minute. The ratio of hydrogen to oxygen flow rate is set to 2.5. The moving speed of the heating source 122 is set to 10 mm / min. Because the distance between the heat source 122 and the diameter measuring device 124 is too far, the diameter change rate of the glass rod 106 is 2.5% after the extension process. This rate of change is greater than the rate of change of Examples 1 and 2 above. (Comparative Example 3) The distance between the heating source 122 and the diameter measuring device 124 was set to 15 mm. The flow rate of hydrogen was set at 215 liters / minute. The ratio of hydrogen to oxygen flow rate is set to 1.0. The moving speed of the heating source 122 is set to 12 mm / min. Because the ratio of the hydrogen to oxygen flow rate is 1.0, which is less than the recommended minimum of 値 1.5, > the glass rod 106 cannot be extended. (Comparative Example 4) The distance between the heating source 122 and the diameter measuring device 124 was set to 15 mm. The flow rate of hydrogen was set at 195 liters / minute. The ratio of hydrogen to oxygen flow rate is set to 4.0. The moving speed of the heating source 122 is set to 13 mm / min. Because the ratio of hydrogen to oxygen flow rate is 4.0, which is greater than the recommended maximum 値 3.0 ', the glass rod 106 cannot be extended. (Comparative example 5) The distance between the heating source 22 and the diameter measuring device 124 was set to 15 mm. This paper size applies to China National Standard (CNS) A4 specification (210 X 297 public love) -------------- 黻 (Please read the precautions on the back before filling this page) Order- ------- Line · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs printed 548247 A / pifrll .doc / 008__B7 V. Description of the invention Set to 204 liters / minute. The ratio of hydrogen to oxygen flow rate is set to 2.5. The moving speed of the heating source 122 is set to 70 mm / min. Because the moving speed of the heating source 122 is 70 mm / min, which is greater than the recommended maximum moving speed of 65 mm / min, the glass rod 106 cannot be extended. What Figure 30 cannot draw is a structural diagram of a glass stem_ * extension device 111, which has a structure in which a force measuring device 282 is provided on the second extension device 111 of the glass rod shown in FIG. The glass rod second extension device 111 has a force measuring device 282 'for measuring the tension of the glass rod 106 supplied to the movable clip 119. The second extension device 111 of the glass rod uses a moving bracket encoder 272 to detect the position of the heating source 122 on the moving bracket 120. The tension measurement device 282 is connected to the control unit 280. The control unit 280 controls the moving speed of the tail end support frame 116 according to the tension of the glass rod 106 provided from the tension measuring device 282. This is continued until the moving distance of the heating source 122 reaches a prescribed distance. Fig. 31 shows a detailed flowchart of the extension process (S154) in Fig. 26. Fig. Φ. First, the glass rod 106 is preheated until a predetermined area of the glass rod 106 is melted and softened by the heating source 122. This will allow the glass rod 106 to be extended (S132). Then, the heating source 122 located on the moving support 120 is moved through the moving support 120. In the early extension stage, it is desirable that the moving speed of the heating source 122 is as slow as possible so that the variation in the diameter of the glass rod 106 can be reduced. The movement of the heating source 122 may be a certain speed. The amount of gas supplied to the heating source 122 may be quantitative. Next, control the movement speed of the tail end support frame 116 so that the tension of the glass rod 106 measured by the tension measurement device 282 is generally in a stable state. 42 This paper size applies the Zhongguan standard (CNSM4 specification (21G X 297) ) --------------------- Order --------- Line · (Please read the notes on the back before filling this page) Ministry of Economy Printed by the Intellectual Property Bureau Employee Consumer Cooperative 548247

Ai s Szt6pifd 1 .doc / OOR B7 V. Description of the invention (α〇) The average tension is within 80% to 110% (S136). This steady state will be explained below. The moving speed of the tail end support frame 116 is initially set based on the diameters of the plurality of positions of the glass rod 106 along the axis direction, and reset based on the tension of the glass rod 106. The glass rod 106 is extended by the above-mentioned tension load until the heating source moves approximately 50 mm to 150 mm (S138). If the control unit 280 detects that the heating source 122 has generally moved from 50 mm to 150 mm (S138), the moving speed of the tail end support frame 116 is changed to a speed in a steady state, which will be explained below. This can be done by controlling the tail end support > bracket drive encoder 273 (S140). During the extension of the glass rod 106, the diameter measuring device 124 measures the diameter of the glass rod 106 (S142). When the glass rod 106 is extended to a desired diameter and length, the glass rod 106 is extended (S144). The speed in the steady state is the material balance before the extension and the speed after the extension. Here, the original diameter of the glass rod 106 is represented by D1 before the extension, the obtained target diameter is represented by D2, the moving speed of the heating source I22 is represented by Vi, and the extension speed of the glass rod 106 is represented by V2. I For example, suppose that the extension occurs only in the heated area, so the heating area and extension are very small. When the following equation is valid, 'V2 corresponds to the speed in a steady state.

Dl2V1-D22 (V1 + V2) Therefore, V2 can be set by adjusting the movement speed of V! And tail end support frame 116 according to 0! And D2. The tension of the glass rod 106 in the steady state is the speed when the end support frame 116 of the glass rod 106 is moved at the speed at which the steady state is extended. Figure 32 shows that during the extension of the glass rod 106, the size of this paper is subject to the Chinese National Standard (CNS) A4 (210 X 297 mm) (please read the precautions on the back before filling in this Page) Order --------- Line-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 A7 __1 doc / Q〇 ^ ο- 5. Description of the invention (αυ process diagram. When heating, the glass rod 1 〇6 Softening. As shown in Fig. 32 (1), the glass rod 106 may not be sufficiently softened only by pre-heating extension. When the heating source 122 and the tail end support frame 116 start moving at a predetermined speed 'The tension generated on the glass rod 106 will increase from twice normal tension to three times normal tension. Then, the pre-heated area will be quickly extended, and the pre-heated diameter will be reduced as shown in Figure 32 (2). The shaded portion is shown. The extension of the glass rod 106 occurs almost entirely in the pre-heated area, and this area will be reheated by the heating source 122 and extended a small amount. Therefore, the neck of the diameter will occur on the glass rod 106, as Figure 32 (3). The diameter of the glass rod 106 The movement is easy to occur in the area from the extended starting place of the glass rod 106 to a place 50mm away from the starting place. If the extension is more advanced than this place, provide heat to the softening speed of the glass rod 106 and the extension of the glass rod 106 The speed will be balanced to a stable state. Therefore, the diameter of the glass rod 106 will not change, as shown in Figure 32 (4). The glass rod 106 can be extended by controlling the moving speed of the tail end support frame 116. This aim is to maintain the tensile p-force of the glass rod 106 during the early extension phase to be approximately 110%, or less than the average tension of the tension in the steady state. Variation in the diameter of the glass rod 106 during the early extension phase This can be reduced. This is because the heat supplied to the glass rod 106, the softening speed of the glass rod 106, and the extension speed of the glass rod 106 can be balanced. If the tension of the glass rod 106 is lower than that in the early extension stage, At 80 ° / () steady state, the distance of the diameter of the glass rod 106 to reach the target 値 needs to be longer. Therefore, the area of the glass rod 106 which can be used as a product extension becomes shorter. This reduces Production factors and increase the time it takes for the glass rod 106 to reach the target diameter. Therefore, what is desired is to 'control the glass rod 106 in the early extension phase ------------ Φ ------ --1Τ --------- (Please read the notes on the back before filling out this page) This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 548247 A7 ς A ^ Nif Η 1 Hrtr / n〇R_ B7 V. Description of the invention) Generally, the tension in the steady state ranges from 80% to 110%. Fig. 33 shows a process of extending the glass rod 106 according to the extension process (S154) of Fig. 31. First, as shown in Figs. 33 (1) and (2), after the preheating of the glass rod 106, the heating source 122 and the tail end support frame 116 start to move to start the extension of the glass rod 106. Since the tension of the glass rod 106 is controlled at 110% or less, the excessive tension is not supplied to the glass rod 106. Due to the rapid extension, no neck will occur on the glass rod 106. If the heating source 122 moves a predetermined distance under this equilibrium condition, the heat supplied to the glass rod 106, the softening speed of the glass rod 106, and the extension speed of the glass rod 106 will be balanced. Therefore, variations in the diameter of the glass rod 106 can be prevented. If the moving speed of the tail end support 116 is continuously controlled according to the tension, a change in the diameter may occur. The tension of the glass rod 106 will change as the amount of heat provided by the heating source 122 changes. The moving speed of the tail end support frame 116 is then changed to maintain the tension of the glass rod 106 at a certain level, causing a change in the diameter of the extended glass rod 106. Therefore, after starting to extend the upper heating source 122 | by a predetermined distance, the change in the diameter of the glass rod 106 caused by the subtle tension changes can be prevented by changing the speed of the tail end support frame 116 to a steady state speed. Until the heating source 122 moves 50 mm from the start extension point, the heat supplied to the glass rod 106, the softening speed of the glass rod 106, and the extension speed of the glass rod will not be balanced. As a result, before the heating source 122 moves 50 mm, if the extension speed is changed to a steady state speed, the neck of the glass rod 106 will occur due to the change in diameter. Therefore, the tension of the glass rod 106 needs to be controlled at about 110% or less, until the heating source 122 moves about 50 mm. What I want is that the Chinese national standard (CNS) A4 specification (21〇χ 297 cm ¥) is applied to the paper size of the Canadian paper. ------------- 纛 (Please read the precautions on the back before (Fill in this page) Order --------- Line-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 丨 Ηnc / 008 A7 B7 Printed clothes by the Employee Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ) Before the heat source Π2 moves more than approximately 150mm, change the moving speed of the tail end support frame 116 to a stable and sad speed. (Example) The glass rod 106 is extended via the glass rod second extension device 111. The glass rod 106 has an outer diameter of 65 mm and a length of 980 mm. The virtual rod 108 has an outer diameter of 60 mm and a length of 250 mm, and is attached to both ends of the glass rod 106. During the connection between the glass rod 106 and the virtual rod 108, the rotation speed around the _ axis is 30 rpm. A hydrogen-oxygen burner is used as the heating source 122. The oxygen and hydrogen supplied to the heating source 122 were 96 liters / minute and 240 liters / minute, respectively. After the glass rod 106 is pre-heated, the glass rod 106 is extended by a moving heating source 122 at a moving speed of 12.4 mm / min. When the glass rod 106 is extended to reduce the diameter of the glass rod 106 from 65 mm to 50 mm, the tension in the steady state is about 100 kgf / cm2, and the moving speed of the tail end support 116 in the steady state is 8.6 mm / min. The moving speed of the tail end support 116 is controlled so that the tension does not exceed UOkgf / cm2 until the heating source 122 moves 100 mm from the start point of the extension. After the heating source I22 moved 100 mm, the glass rod 10 was extended by controlling the moving speed of the tail end support Π6 to 8.6 mm / min, which is the speed in a steady state. Figure 34 is a graph showing the change in the tension of the glass rod 106 during the early extension phase of the example. The vertical axis represents the tension generated by the glass rod 106, and the horizontal axis represents the moving distance of the heating source 122 after the start of the extension. When the heating source 122 is moved forward by 100 mm, the tension of the glass rod 106 during the early extension phase is 110 kgf / cm2 or less. Figure 36 shows that after the extension of the glass rod 106, the glass rod 106 06 ---------------------- order --------- (Please read the precautions on the back before filling this page) This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297). 5 Printed by the Consumer Property Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247, Invention Description) Graph of change in diameter. The vertical axis represents the distance along the radiation direction of the glass rod 106, and the horizontal axis represents the distance along the longitudinal direction of the glass rod 106. The glass rod 106 is extended in accordance with the method having a small diameter variation such as the neck, and after the extension is started, the diameter of the glass rod 106 can be reduced to a target diameter of about 100 mm in the longitudinal distance. In this area, the accuracy of the diameter of the glass rod 106 will be extended at a steady state speed by an exemplary method, which has approximately the same accuracy as that of extending the diameter of the glass rod 106 by the conventional extension method. (Comparative example) A glass rod 106 having a diameter of 65 mm is extended to a diameter of 50 mm. The condition of the moving speed and the amount of gas supplied to the heating source 122 are the same as in the above example. From the beginning of the extension ', the glass rod 106 is extended by controlling the moving speed of the tail end support 116 to 8.6 mm / min. This is the speed in steady state. Figure 35 is a graph showing the change in the tension of the glass rod 106 during the early extension phase of the comparative example. The vertical axis represents the tension 'generated by the glass rod 106, and the horizontal axis represents the moving distance of the heating source 122 after the start of the extension. In the early extension stage, the tension of the glass rod 106 is increased to 300 kgf / cm2 ′ which is three times the steady state tension. This will occur when the heating source 122 moves for the first 100 mm. As shown in Fig. 36, after the extension of the comparative example, the glass rod 106 has a large neck of about 100 mm compared to when it was initially extended. Because the fluctuations continue until about 300 mm longer than the beginning, this area cannot be used as a product, and the yield will decrease. Figure 37 shows the details of the drawing process (S158) at the end of Figure 26 ------------- Yu (Please read the precautions on the back before filling this page) Order- ------- line | This paper size is applicable to China National Standard (CNS) A4 specification (21 × 297 mm) 548247 j ^ AP 1 fr \ 1 H j 、 / nng A7 B7 Intellectual Property Bureau, Ministry of Economic Affairs Printed by the Consumer Consumption Cooperative. V. Flowchart of Invention Description (UC). First, the position of the glass rod 106 pulled out by the tail end is detected (S169). Next, a predetermined area of the glass rod 106 is pre-heated by the flame of the heating source 122 (S170) until the predetermined area is almost softened. Then, the glass rod 106 is extended by heating a predetermined area of the glass rod 106 via the heating source 122 and the moving end support frame 116, so that the diameter of the predetermined area is reduced (S172). The heating source 122 moves from the center of the predetermined area toward the middle surface of the glass rod 106. Next, the heating source 122 heats the glass rod 106_ with a flame second (S174). The concentration of this flame is smaller than that of the pre-heated flame (S170). The specified area of the glass rod 106 is further extended by the moving tail end support frame 116, so that the diameter of the specified area is reduced (S176). The prescribed area of the glass rod 106 will then be melted by this flame. Again, the concentration of this flame is less than the concentration of the preheated flame (S170). Fig. 38 shows a schematic view of the cutout 284, which is provided as a mark on the connection between the glass rod 106 and the virtual rod 108. This allows the tail-end pulled-out position to be detected during the tail-end pull-out position detection process (S169) shown in Figure 37. A marker is provided on the connection between the glass rod 106 and the virtual rod 108. The device for recognizing the mark is installed on the second extension device 111 of the glass rod to detect the position of the mark. The starting position of the tail end pull-out process is set according to the detected marker position. The extension process of the glass rod 106 is completed in setting the tail end pull-out start position, and the tail rod pull-out process of the glass rod 106 is started at the same time. When the recognition device is a diameter measurement device, the method shown in Fig. 38 is used. Figure 39 shows a schematic diagram of fluorescent paint 287, which is used for the connection between the glass rod 106 and the virtual rod 108, and the Chinese national standard (CNS) A4 specification is applied to 48 paper sizes. (210 X 297 public love) --------------------- Order --------- line (Please read the notes on the back before filling in this Page) 548247 Printed A7 B7 Invention Note (as another example of marking by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs). When the device that recognizes the marking is an image processing device, the method shown in Figure 39 will be used. FIG. 40 is a schematic diagram of the second extension device 111 of the glass rod for detecting the cutout 284 during the tail-end pull-out position detection process (S169). First, the virtual rod 108 is clamped on the two of the glass rod 106. The glass rod 106 with the virtual rod 108 on both ends is fixed to the fixed clip 118 and the movable clip 119, not shown in the figure. A cutout 284 with a depth of 3 mm is provided to surround this joint position. This joint position is caused by the connection between the glass rod 106 and the virtual rod 108. During the extension of the glass rod 106, the diameter measurement equipment Set 124 to measure the diameter of the glass rod 106. When the diameter measuring device 124 measures the position of the cutout 284 by detecting the change in the diameter of the glass rod 106, the second extension device 111 of the glass rod starts the tail end drawing process. The pull-out start position is slightly toward the middle of the glass rod 106 connected between the glass rod 106 and the virtual rod 108. In addition, the start position of the tail-end pull-out will not have bubbles or bubbles with a diameter of 0.3 mm or more . Then, the process is moved from extended to the end of the process. When the mark is a mark 287, fluorescent paint is used on the connection between the glass rod 106 and the virtual rod 108. The camera of the image processing device can detect the installation Fluorescent paint on the position of the diameter measuring device 124, wherein the diameter measuring device 124 is mounted on the mobile stand 120. During the extension of the glass rod 106, the camera will process the pattern of the glass rod 106. If the camera detects Fluorescent paint, the second extension device 111 of the glass rod starts the tail-end drawing process. The starting position of the tail-end drawing is slightly toward the middle of the glass rod 106 connected between the glass rod 106 and the virtual rod 108. Also, there will be no bubbles or bubbles with a diameter of 0.3mm or more at the beginning of the tail end. Then, the process starts from 49 I----------------- ------- Order --------- (Please read the precautions on the back before filling this page) The paper size is the national standard of China (CNSM4 specification (210 X 297 mm) B7 548247 SSz ! 6pifrM Η o r. / 〇 0 R___ 5. Description of the invention (to) Extend to the end of the process of pulling out. FIG. 41 shows the heating source 122 and the rear support platform 116 during the drawing of the tail end of the glass rod 106 during the drawing process shown in FIG. 37 (S169). Mobile illustration. During the pre-heating process with the tail end pulled out (S170), the flame of the heating source 122 heats the prescribed area of the glass rod 106 until the glass rod 106 is almost softened. During the extension with the tail end pulled out (S172), the heating source 122 heats the prescribed area of the glass rod 106, and the tail _ support table Π6 extends the prescribed area of the glass rod 106. This reduces the diameter of the prescribed area. In the second heating process (S174), the tail support base 116 stops, and the heating source I22 moves from the center of the prescribed area toward the middle surface of the area of the glass rod 106 (to the left in the figure). Next, the heating source 122 heats the glass rod 106 with a flame having a concentration lower than that of the pre-heated flame (S170). During the second extension process with the tail end pulled out (S176), the heating source 122 moves to the left side in the figure and heats the glass rod 106. The tail support 116 is also moved to extend the prescribed area of the glass rod 106. During the melting process with the tail end pulled out (S178), the φ heating source 122 heats the glass rod 106 with flame, the concentration of which is lower than that of the preheated flame (S170). The position of the heating source 122 is at the same position as during the second extension process for pulling out the tail end (S176). The tail support table 116 moves to melt the glass rod 106. FIG. 42 shows a setting example of another method of the tail-end drawing out process (S158) in FIG. 37. This method controls the amount of gas, the moving distance of the heating source 122, and the moving speed of the tail support table 116 according to the progress time of the drawing process of the tail end of the glass rod 106. Gas quantity, moving distance of heating source 122, and 50 of tail support 116. This paper size is applicable to China National Standard (CNS) A4 (210 X 297 public love) --------------- ----- Order --------- line (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 4 548247 ^ Λ η 1 f Η 1 H〇r / nf) S_ 5. Description of the invention (⑽) The moving speed is set once. This setting is based on the position of the cutout 284, and the change and extension speed setting of the length and diameter of the glass rod 106 along the axis direction in the second heating condition (S157). The second extension device ill of the glass rod then resets the amount of gas, the movement distance of the heating source 122, and the movement of the tail support table 116 according to the progress time of the tail rod drawing process of the glass rod 106 in the tail end drawing process (S158). speed. For example, in the pre-heating process (S170) with which the tail end is pulled out, it is performed for 300 seconds, and the moving distance of the heating source 122 is set to 0 mm. Tail support > The moving speed of the stand 116 was set to 0 mm / min. The amount of hydrogen (H2) used to heat the source 122 was set to 250 cc / min. The amount of oxygen (02) (internal) output from the internal nozzle of the heating source 122 was set to 30 cc / min. The amount of oxygen (02) (external) output from the external nozzle of the heating source 122 was set to 100 CC / min. In accordance with the above situation, the heating source 122 heats the glass rod 106. During the extension with the tail end pulled out (S172), it was performed for 60 seconds, and the amount of hydrogen (H2) used to heat the source 122 was set to 250 cc / min. The amount of oxygen (02) (internal) output from the internal nozzle of the heating source 122 was set to 30 cc / min. The amount of oxygen (02) (external) output from the external nozzle of the heating source 122 was set to 100 cc / min. In accordance with the setting conditions described above, the heating source 122 heats the glass rod 106. The moving distance of the heating source 122 is set to 0 mm, and the tail support base 116 extends the glass rod 106 at a moving speed of 10 mm / min. In the second heating process (S174), it was performed for 20 seconds, and the moving speed of the tail support table 116 was set to 0 mm / min. The moving distance of the heating source Π2 is set to 15 mm. The amount of hydrogen (H2) used to heat the source 122 was set to 130 cc / min. The amount of oxygen (02) (internal) output from the internal nozzle of the heating source 122 was set to 15 cc / min. The amount of oxygen (〇2) (outside) output from the external nozzle of the heating source 122, —Aw (Please read the precautions on the back before filling out this page) This paper size is applicable to China National Standard (CNS) A4 (210 X 297mm t)

A Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 A7 Gas doc / 008__B7 ______________ 5. Invention Description) Set to 50cc / min. According to the above setting conditions, the heating source 122 heats the glass rod 106 〇 During the second extension process (S176) for pulling out the tail end, it is performed for 180 seconds, and the moving distance of the heating source 122 is increased from 15 mm to 25 mm. The amount of hydrogen (H2) used to heat the source 122 was set to 130 cc / min. The amount of oxygen (02) (internal) output from the internal nozzle of the heating source 122 was set to 15 cc / min. The amount of oxygen (02) (external) output from the external nozzle of the heating source 122 was set to 50 cc / min. In accordance with the setting conditions described above, the heating source 122 heats the glass rod 106. The tail support 116 extends the glass rod 106 at a moving speed of 10 mm / min. Finally, during the melting process with the tail end pulled out (S178) for 30 seconds, the heating source 122 does not move from the position during the second extension process with the tail end pulled out, so the moving distance is maintained at 25mm. The amount of hydrogen gas (H2) used to heat the source 122 was set to 130 cc / min. The amount of oxygen (02) (internal) output from the internal nozzle of the heating source 122 was set to 30 cc / min. The amount of oxygen (02) (external) output from the external nozzle of the heating source 122 was set to 20 cc / min. In accordance with the setting conditions described above, the heating source 122 heats the glass rod 106. The tail support 116 melts the glass rod 106 at a moving speed of 120 mm / min. According to the setting situation shown in FIG. 42, the glass rod 106 having a diameter of 60 mm is pulled out by the tail end through the glass rod second extension device 111. The shape of the preform in the area pulled out by the tail end forms a conical shape. The length and diameter of this area are 61mm and 60mm, respectively. The time required for the tail-end pull-out process is 12 minutes. What is not shown in FIG. 43 is another setting example of another method of the tail end drawing out process (S158) in FIG. 37. This method controls the amount of gas and the movement of the heating source 122 according to the moving distance of the tail support platform 116. The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ---------- ----------- Order --------- line (please read the precautions on the back before filling this page) 548247 A7 B7 V. Description of the invention (h) Speed and tail support The moving speed of the platform 116. The glass rod second extension device 111 detects the moving distance of the tail support platform 116. According to the position of the cutout 284, the change in length and diameter of the glass rod 106 along the axis direction and the extension speed setting in the second heating state (S157), the moving distance of the Likou heat source 122 and the moving speed of the tail support table 116 are Set it once. The second extension device 111 of the glass rod resets the amount of gas, the movement distance of the heating source 122, and the movement speed of the tail support base 116 according to the movement distance of the tail support base 116 during the tail end drawing-out process (S158). One incident was that the tail support platform 116 could not be measured because the tail support platform 116 did not move. When the glass rod 106 is not sufficiently heated during the tail-end drawing-out process, this may occur due to insufficient power of the drive motor 275 from the tail support table. When the output of the tail support motor 275 is not large enough, an AC servo motor that can detect the torque of the output shaft can be used to drive the tail support 116. A threshold can be set to use the torque generated by the tail support drive motor 275. When the torque exceeds this threshold, the glass rod second extension device 111 may determine that the heat is insufficient. Then, the second extension device 111 of the glass rod can stop the driving of the tail support platform 116 for a period of time, and increase the amount of gas supplied to the heating source 122. The setting condition shown in FIG. 43 is the same as the setting condition shown in FIG. 42 except that the “Performance time” setting is changed to the “Tail support 116 moving distance” setting. The tail-end drawing method shown in FIG. 43 also has a pre-heating process (S170) for tail-end drawing, an extension process (S172) for tail-end drawing, a second heating process (S174), and The second extension process of pulling out the tail end (S176), and the melting process of pulling out at the tail end (S178). In each process stage, according to the moving distance of the tail support platform Π6, set the amount of gas and the movement distance of the heating source 122 and the movement of the tail support platform 53. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297) Meal) (Please read the notes on the back before filling out this page) Order --------- Line-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 j ^ / 1 A pif Η 1 Η or / Π Γ | ^ Α7 Β7 五

Printed by JL Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives, Invention Description (θ) Speed. For example, in the pre-heating process for pulling out the tail end (S170), because the moving speed of the tail support platform 116 is set at Omm / min, 300 is measured after the pre-heating process for pulling out the tail end is started second. In other words, the moving distance of the tail support table 116 is set to 0 mm in 300 seconds. The amount of hydrogen gas (H2) used to heat the source 122 was set to 250 cc / min. The amount of oxygen (02) (internal) output from the internal nozzle of the heating source 122 was set to 30 cc / min. The amount of oxygen (02) (external) output from the external nozzle of the heating source 122 was set to 100 cc / min. In accordance with the above situation, the heating source 122 heats the glass rod 106. When the preheating process with the tail end pulled out has elapsed 300 seconds, the process moves to the next step. During the extension with the tail end pulled out (S172), when the moving distance is changed from 0mm to 30mm, the amount of hydrogen (H2) used to heat the source 122 is set to 250cc / min. The amount of oxygen (02) (internal) output from the internal nozzle of the heating source 122 was set to 30 cc / min. The amount of oxygen (02) (external) output from the external nozzle of the heating source 122 was set to 100 cc / min. In accordance with the setting conditions described above, the heating source 122 heats the glass rod 106. The moving distance of the heating source 122 is set to 0 mm, and the tail support base 116 extends the glass rod 106 at a moving speed of 10 mm / min. During the second heating process (S174), the moving speed of the tail support base 116 is set to 0 mm / min, so that the movement distance of the tail support base 116 is maintained at 30 mm. The moving distance of the heating source 122 is set to 15 mm. The amount of hydrogen (H2) used to heat the source 122 was set to 130 cc / min. The amount of oxygen (02) (internal) output from the internal nozzle of the heating source 122 was set to 15 cc / min. The amount of oxygen (02) (external) output from the external nozzle of the heating source 122 was set to 50 cc / min. In accordance with the setting conditions described above, the heating source 122 heats the glass rod 106. After the heating source 122 moves 15 mm, the process moves to the next step. 5 4 (Please read the notes on the back before filling out this page). · Order --------- The size of the thread paper is applicable to China National Standard (CNS) A4 (210 X 297 public love) A7 Five Economy Printed by the Ministry of Intellectual Property Bureau's Consumer Cooperatives 548247 SSdApifHl rloc / OOR ___ B7____, description of the invention) Then, in the second extension process to pull out the tail end (S176) 'When the movement distance of the tail support platform 116 increased from 30mm to 55mm At this time, the moving distance of the heating source 122 was increased from 15 mm to 25 mm. The amount of hydrogen gas (H2) used to heat the source 122 was set to 130 cc / min. The amount of oxygen (02) (internal) output from the internal nozzle of the heating source 122 was set to 15 cc / min. The amount of oxygen (02) (external) output from the external nozzle of the heating source 122 was set to 50 cc / min. In accordance with the setting conditions described above, the heating source 122 heats the glass rod 106. The tail support 116 extends the glass rod 106 at a moving speed of 10 mm / min. Finally, in the melting process for pulling out the tail end (S178), when the moving distance of the tail support platform 116 is increased from 55mm to 100mm, the heating source 122 will not be in the second extension process for pulling out (S176). Therefore, the moving distance is maintained at 25 mm. The amount of hydrogen (H2) used to heat the source 122 was set to 130 cc / min. The amount of oxygen (02) (internal) output from the internal nozzle of the heating source 122 was set to 30 cc / min. The amount of oxygen (02) (external) output from the external nozzle of the heating source 122 was set to 20 cc / min. In accordance with the setting conditions described above, the heating source 122 heats the glass rod 106. The tail support 116 melts the glass rod 106 at a moving speed of 120 mm / min. (Example 1) According to the setting shown in Fig. 43, a glass rod 106 having a diameter of 60 mm is pulled out at the tail end. A 200W AC servo motor was used as the tail support table drive motor 2 7 5. It is used as the rotary encoder of the tail support table drive encoder 2 7 3, which can detect the rotation number of the tail support table drive motor 275. The rotation speed of the tail support motor 275 is controlled by the output of the tail support motor encoder 273. The movement distance of the tail support 116 can be obtained by measuring the output of the tail support driving encoder 273. The paper size required for the tail-end drawing process depends on the national standard (CNS) A4 (210 X 297 public) of the paper "-------------------- --- Order --------- (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 ^ A / dr) c / 008__BT ^ V. Description of the invention ) Time is 15 minutes. The shape of the area of the ongoing glass rod 106 pulled out by the tail end forms a conical shape. The length and diameter of this area are 61mm and 60mm, respectively. (Example 2) According to the setting shown in Fig. 43, a glass rod 106 with a diameter of 60mm is pulled out at the tail end. The linear encoder provided on the tail support 116 can detect the moving distance of the tail support 116. According to the moving distance of the tail support platform Π6 detected by the linear encoder, the amount of gas, the moving distance of the heating source 122 and the moving speed of the tail support platform 116 are controlled. The shape of the region of the glass rod 106 being pulled out by the trailing end forms a conical shape. The length and diameter of this area are 65mm and 60mm, respectively. FIG. 44 is a structural diagram of the heating source 122 of the second extension device ill of the glass rod. The bottom end of the outer tube 285 of the heating source 122 is closed. The outer tube 285 is connected to a flammable gas passage 312. This is a hydrogen channel where hydrogen is an example of a suitable flammable gas. The heating source 122 has a flammable gas flow rate control unit 314 and is placed in the flammable gas passage 312. All inner tubes 286 are connected to an oxygen channel 308 through a branching tool 316. The oxygen channel 308 is used as a channel for oxygen. The inert gas passage 296 is connected to the oxygen passage 308 via a connection element 302. The oxygen flow rate control unit 310 is installed between the connection element 302 and the inlet of the oxygen passage 308. The inert gas passage 296 has a valve 300 and an inert gas flow rate control unit 298. The heating source 122 has a control element 304 for controlling the driving source 306 based on the flow rate data output from the oxygen flow rate control unit 310. The drive source 306 is connected to the valve 300. The flammable gas flow rate control unit 314 and the oxygen flow rate control unit 310 control the flow of hydrogen h2 and oxygen 02 as shown in Figs. 42 and 43 ---------------- -I --- Order · ---- IIII (Please read the notes on the back before filling in this page) The paper size is applicable to the Chinese national standard (CNSM4 specification (210 X 297 ^^ 7 548247

ς S ^ L ^ nifHl Hor / OOR V. Description of the invention (㈧) Rate. A valve such as an electronic valve or a solenoid valve may be used as the valve 300. A three-way tube or three-way valve can be used to connect the element 302. Figure 45 shows a plan view of the top of the heating source 122. Each inner tube 286 has an inner diameter of 1 mm and an outer diameter of 3 mm, and is inserted into an outer tube 285 having an inner diameter of 30 mm. The inner tube 286 surrounds the center of the outer tube 285 and is placed in a plurality of columns in the same circle. The inner tubes 286 are placed in each column at regular intervals. Adjacent columns are directed outward from the outer tube 285 to become the distance between the highest inner tubes 286 in each column. The inner tube 286 may be installed inside the outer tube 285 at a uniform density. Oxygen flows inside the oxygen outlet 288, which is inside the inner tube 286. Flammable gas flows inside the flammable gas outlet 290, which is inside the outer tube 285. The movement of the heating source 122 will be explained as follows. Hydrogen flows from a hydrogen supply source (not shown) into the outer tube 285 through the flammable gas passage 312. Oxygen is distributed into the inner tube 286 via the branch tool 316. Oxygen is supplied through an oxygen channel 308 from an oxygen supply source (not shown). Hydrogen and oxygen are mixed on top of the outer tube 285. A flame 294 is obtained by burning this mixed gas. > According to the processing purpose of the glass rod 106, the amount of hydrogen and oxygen can be adjusted by using the oxygen flow rate control unit 310 and the flammable gas flow rate control unit 314 to obtain the optimal flame condition. At the same time, the signal indicates the flow rate of oxygen output from the oxygen flow rate control unit 310 to the control element 304. The linear velocity of oxygen is a few milliseconds, which can be guided by dividing the internal area of the inner tube 286 by the flow rate of oxygen. If the linear velocity of oxygen is 1.0 m / s or less, the control element 304 drives the driving source 306 and opens the valve 300. Next, nitrogen is an inert gas, and flows into the oxygen channel 308 at a linear velocity of 0.5 m / s, and is mixed with the oxygen. ------------- € (Please read the precautions on the back before filling out this page) Order --------- line {Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Paper size applies to China National Standard (CNS) A4 specification (21〇X 297 public love) Duo printed

548247 A7 __SS46pifd1 doc / OO ^ _B7, description of the invention (to) When changing the flow rate of oxygen, if the linear velocity of oxygen reaches 1.1 meters / second, the control element 304 drives the driving source 306 and closes the valve 300. When the flow rate of the flammable gas and oxygen is reduced so that the flame becomes smaller, the high temperature region near the top of the internal flame moves from the top of the heating source 122. This is because the flame 294 diffuses and causes a mixture of inert gas and oxygen. Therefore, the surface temperature of the top portion of the heating source 122 is maintained below 400 ° C, so that the oxidation of the heating source 122 can be prevented. When the heating power needs to be increased, because the combustion temperature drops, if the inert gas is mixed, the valve 300 for flowing inert gas will be closed. At the same time, because the flame 294 is large, it does not increase the flow rate of flammable gas and oxygen, and the high temperature region of the flame 294 is no longer located on the top of the heating source 122. Therefore, the surface temperature of the top of the heating source 122 is maintained below 400 degrees Celsius. By setting the different linear speeds of oxygen when the valve 300 is opened and closed, it is possible to prevent the bounce caused by opening and closing the valve 300. This needs to be set to 1.0m / sec or less and set to 1.1m / sec or more. It is desirable that, with the opening of the valve 300, the inert gas has an inflow volume with a linear velocity between 0.5 m / s and 2 m / s. The linear velocity of the inert gas can be calculated by dividing the internal area of the oxygen outlet 288 of the inner tube 286 by the flow rate of the inert gas. If the linear velocity of the inert gas is 0.5 m / s or less, it is difficult to control the temperature of the top of the heating source 122. On the other hand, if the linear velocity of the inert gas is 2.0 m / s or more, the temperature of the flame is reduced due to incomplete combustion of hydrogen. If a heating source 122 is used to heat the glass rod 106 with flame 294, metal oxides will generally not be generated on top of the heating source 122. This is because the surface temperature on the top of the heating source 122 is maintained at 400 degrees Celsius or below, therefore, metal oxides are not attached to the glass rod 106, and may be ------------- ------- Order --------- Line (Please read the precautions on the back before filling in this page) This paper size applies to China National Standard (CNS) A4 specification (210 X 297 public love) 548247 Α7 Β7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention) Manufacture of high-quality glass rods 106. A glass rod 106 having an average diameter of 65 mm is extended by the second extension device Π1 of the glass rod, wherein the second extension device 111 of the glass rod has a heating source 122 for controlling the flow rate of the inert gas. The ratio of the number of glass rods 106 having foreign matter such as metal oxides to the total number of treated glass rods 106 is 0.2%. In comparison, when the glass rod 106 is always extended via the shut-off valve 300, the ratio of the number of glass rods 106 having foreign substances such as metal oxides to the total number of processed glass rods 106 becomes a high number. Fig. 46 is a graph showing the relationship between the linear velocity of oxygen and the top temperature of the heating source 122. The events shown here are always mixing oxygen and nitrogen with a linear velocity of 0.5 m / s, and not mixing oxygen and nitrogen. When nitrogen is mixed, the top temperature of the heating source 122 does not exceed 400 degrees Celsius. When nitrogen is not mixed, the temperature in this region reaches 400 ° C to 700 ° C, where the linear velocity of oxygen is lm / s or less. Therefore, when the linear velocity of oxygen is lm / sec or more, the surface temperature of the heating source 122 can be controlled by mixing oxygen and nitrogen. > Figure 47 shows the shape of the tip of the preform 107, the diameter of which is reduced and melted during the tail end drawing out process (S158). D represents the diameter of the preform 107. 〇 represents the position where the diameter of the preform 107 starts to be reduced. P represents a position where the diameter D of the preform 107 is reduced to 1% or below the original diameter. The preform 107 has a tapered shape, and its two ends can be expressed by the equation 1 / 3D $ L $ 3D. Here, L represents a length between the position 0 and the position P. The pull-out time to reach the steady state is the time from when the preform 107 is set on the preform pull-out device 500 until the diameter and the pull-out speed of the optical fiber reach a predetermined range. When the preform 107 is pulled out to an optical fiber, the initial 59 of the preform 107 Please read the precautions on the back before filling this page) Standards for this paper (CNSM4 specification (21G X 297)) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 A7 _5S46nifdl .doc / 008 _B7 V. Description of the invention (Q) The shape affects the time it takes to reach the steady state. This effect becomes larger, as the diameter of the preform 107 becomes larger. Then, the time it takes to reach the steady state becomes longer. The preform 107 with the shape of the equation 1 / 3D $ LS3D can reduce the time it takes to pull out to reach a stable state. If L < 1 / 3D, because the drip time of the tip of the preform 107 becomes longer, the optical fiber It takes longer to reach the specified diameter and the pull-out speed. If L > 1 / 3D, the drip time of the tip ^ of the preform 107 can be reduced, but the tapered shape of the preform 107 becomes pulled out. It takes longer to stabilize the shape. Then, the diameter of the fiber and the pull-out speed reach It takes longer to specify the tadpole. Therefore, it is preferable to make the tapered shape of the preform 107 as L = D. In the event that the preform 107 is partially heated by flame to melt the preform 107, the remaining deformation remains At both ends of the tapered part 107 of the preform 107. If the remaining deformation of the tapered part is large here, when a strong impact force is supplied to the preform 107, it can be generated at both ends of the preform 107 Cracking. A thermal impact between the prefabricated part 107 and the virtual rod can also cause cracking on both ends of the prefabricated part 107. The ideal amount of deformation on both ends of the prefabricated part 107 is 40kgf / cm2 or less. By controlling the remaining deformation of the preform 107 at 40kgf / cm2 or less, it is possible to prevent cracking on the preform 107. (Example) The preform 107 with a diameter of 30mm is pulled out. The length L is set to 30mm Keep the deformation amount of the gradually deformed part of the preform 107 at 40kgf / cm2 so that no cracking will occur during the connection between the preform 107 and the virtual rod. When the set diameter of the optical fiber is 125 // m and the pull When the output speed is 100mm / min The time it takes to reach the stable state is 20 minutes. From the prefabricated parts -------------------------- ^ ----- III «(Please read the back first Note: Please fill in this page again) 60 548247 A7 5546〇ifdl.doc / 008 B7 V. Description of the invention (u) The time from the setting of the preform 107 on the pull-out device 500 to the tip of the preform 107 dripping is 10 minutes. It takes 10 minutes for the diameter of the optical fiber and the pull-out speed to reach a predetermined threshold. (Comparative Example 1) A preform 107 having a diameter of 30 mm was pulled out. The length L is set to 5 mm. The deformation amount of the gradually deformed part of the preform 107 is kept at 40 kgf / cm2, so that no cracking occurs during the connection between the preform 107 and the virtual rod. When the set diameter of the optical fiber is 125 / zm and the pull-out speed is 100 mm / > minutes, the time taken for drawing to reach a stable state is 50 minutes. The time from the setting of the preform 107 on the preform pull-out device 500 to the dripping of the tip of the preform 107 is 20 minutes. It takes 30 minutes for the diameter of the optical fiber and the pull-out speed to reach the specified threshold. (Comparative Example 2) A preform 107 having a diameter of 30 mm was pulled out. The length L is set to 100 mm. Keep the deformation amount of the gradually deformed part of the preform 107 at 40 kgf / cm2, so that no cracking will occur during the connection between the preform 107 and the virtual rod. When the set diameter of the optical fiber is 125 # m and the pull-out speed is 100mm / min, the time it takes to pull out to reach a stable state is 40 minutes. The time from the setting of the preform 107 on the preform pull-out device 500 to the tip of the preform 107 is 10 minutes. It takes 30 minutes for the diameter of the optical fiber and the pull-out speed to reach a predetermined threshold. (Comparative Example 3) A preform 107 having a diameter of 30 mm was pulled out. The length L is set to 30 mm. The amount of deformation of the gradually deformed portion of the preform 107 was kept at 60 kgf / cm2. Because cracks will occur during the connection between the prefabricated part 107 and the virtual rod. The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love) ---------------- . · (Please read the precautions on the back before filling out this page) Order --------- line | Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Consumer Cooperatives Printed by the Ministry of Economic Affairs Intellectual Property Bureau Employees Consumer Cooperatives Co., Ltd. Yinli 548247 A7 V46r > ifdl.doc / 008_B7 V. Description of the invention), so the prefab 107 cannot be pulled out. As described above, by making the tip shape of the preform 107 to 1 / 3DSLS 3D, the time required to pull out the preform 107 to an optical fiber can be reduced. Fig. 48 shows another shape of the tip of the preform 107, the end of which is extended. The preform 107 shown in Fig. 48 forms a melting portion 332 through flame at one end thereof, and a mechanically-cut cutting surface 334 at the other end thereof. The melting portion 332 shown in FIG. 48 (a) is rapidly melted by the flame. _ The melting portion 332 shown in Fig. 48 (b) is gradually melted, and the diameter is reduced to form a tapered portion 336. A thin portion 338 is provided on the tip of the melting portion 332 as shown in Fig. 48 (c). When the preform 107 having the tapered portion 336 is pulled out as shown in FIG. 48 (b), since the diameter of the melting portion 332 is small, it takes a short time to drip the tip of the preform 107, and the preform The number of 107 drops is also small. When the preform 107 having the tapered portion 336 and the thin portion 338 is pulled out as shown in FIG. 48 (c), the time taken to drip the tip of the preform 107 can be reduced to the traditional shape of the preform 107 The required 1/3 or less time φ. The loss of material caused by dripping through the preform 107 can be limited to a small amount of thin portion 338. It is desirable that the shape of the thin portion 338 accounts for 0.1% to 15% of the weight of the melting portion 332. If the weight of the thin portion 338 is less than 0.1% of the weight of the melting portion 332, the effect produced by providing the thin portion 338 cannot be obtained. On the other hand, if the weight of the thin portion 338 is more than 15% of the weight of the melting portion 332, the dripping of the tip of the preform 107 takes longer, and the loss of the preform 107 increases during the drawing. What I want is that the diameter of the thin part 338 is between the main body of the preform 107 and the straight 62. The paper size applies the Chinese National Standard (CNS) A4 (210 X 297 mm) ------------ -------- Order --------- line (please read the notes on the back before filling this page) A7 R7 I, printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives 548247 S S46nifd 1 .doc / 008 5. Description of the invention (u) 1/2 to 1/10 of the diameter. If the diameter of the thin portion 338 is within this range, the time required for dripping of the tip of the preform 107 in the early drawing-out stage can be shortened. If the length of the thin portion 338 is about 1 to 5 times this diameter, the loss of the preform can be limited to ^ ~ Vj \ · ^. Fig. 49 shows a damage map of the preform 107 before the surface treatment of the preform 107 in the surface treatment process (S168) of Fig. 26. The preform 107 extended by the second extension device 111 of the glass rod will be etched by hydrofluoric acid > as a surface treatment. The chemical cladding of the chemically cut preform 107 is such that the preform 107 has a central portion thickness of a predetermined proportion of the metal coating. Hydrofluoric acid etching is a process that breaks down the binding force between silicon and oxygen in glass. The hydrofluoric acid etching process chemically cuts the surface of the preform 107 at a speed of about 8 mm per hour. However, if there is a crack or concave surface on the surface of the preform 107 ', the place with the crack or concave surface will be additionally cut to form a larger concave surface than the concave surface on the other part of the preform 107. The concave surface caused by the hydrofluoric acid etching process is called a hydrogen fluoride concave surface. During the drawing of the preform | 107 into the fiber, this hydrogen fluoride concave surface was responsible for the fiber splitting. The honing process is performed before the treatment of hydrofluoric acid etching to remove the cracks and the concave surface on the preform 107, and the preform 107 without the concave surface of hydrogen fluoride on the surface can be obtained. In this method, the preform 107 is flame-honed at the temperature of the deformation point of the preform 107 described above. During flame honing, the preform 107 is flame honed so that its uneven surface will be in the range of 0.3 mm. The flame honing of the preform 107 before the preform is etched with hydrofluoric acid prevents the generation of a concave surface of hydrogen fluoride. This is possible because the amount of deformation in the preform 107 can be reduced, and 63 papers are suitable ^ China S, 豕 Standard (CNS) A4 size (210 X 297 mm)--* Λ * -------------------- Order --------- line (please read the precautions on the back before filling this page) 548247 A7 Ministry of Economy Wisdom Printed by the Property Cooperative Consumer Cooperative B7 V. Invention Description (U) A smooth surface without cracks can be obtained. Not only is flame honing suitable, but mechanical honing can also be used to hoist the preform 107. Fig. 51 shows the number of hydrogen fluoride concaves produced on the preform 107 by the visual inspection counting example and the comparative example. FIG. 52 shows the uneven surface of the preform 107 after the hydrofluoric acid etching treatment of the example and the comparative example. First, the preform 107a and another preform 107b are placed on a support table, where the preform 107b has the same shape as the preform 107a. Next, one end of the preform 107a was lifted to a height of 10 cm, while the other end was maintained on a supporting table. Then, the preform 107a with one end lifted is lowered onto the preform 107b, so that the preform 107a has a crack. Each of the plurality of preforms 107a was damaged in 3 places at a distance of 20 cm by the same method as described above. In the pretreatment process 2 shown in Figs. 51 and 52, the preform 107a is lifted to a height of 20 cm, and another damage procedure of the preform 107a is the same as that of the pretreatment process 1. In the examples shown in Figs. 51 and 52, each preform 107a is processed by pre-processing process 1 and pre-processing process 2 through φ. Next, each preform 107a was honed with a burner flame, wherein the burner was supplied with 250 ml / min of hydrogen and 145 ml / min of oxygen. Each flame-honed preform 107a was treated with hydrofluoric acid etching at room temperature. The material thickness of the uranium engraved from the outer diameter of the preform 107 is one of four steps of 0.2mm, 1.2mm, 2.2mm, and 3.2mm. The etching thickness of each four steps is etched into 10 preforms 107a through hydrofluoric acid. Fig. 50 shows a schematic view of a preform 107a, which is processed by etching the examples shown in Figs. 51 and 52 with hydrofluoric acid. By measuring the diameter difference between the diameter of the marked point X and the marked point 0, a preform 107a can be obtained. This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ---- ---------------- Order --------- line (please read the precautions on the back before filling out this page) 548247 Λ7 Β7 Staff Consumption of Intellectual Property Bureau of the Ministry of Economic Affairs Cooperative prints 5. Description of invention (Ui) Uneven surface. The marked point X is a point where the preform 107b was damaged through contact. Marking point 0 is a distance from the marking point X 10 mm, which will not be damaged by contacting the preform 107b via the bottle. The average diameter of the diameters of the three marked points X was used as the diameter of each of the preforms 107a. In the comparative example shown in Fig. 51 and Fig. 52, each of the preforms 107 is processed through the pretreatment process 1 and the pretreatment process 2 is etched with a hydrofluoric acid without flame honing. Visual inspection was used to evaluate the > amount of the hydrogen fluoride concave surface, and the uneven surface was measured in the same manner as the example. As shown in Fig. 52 and Fig. 53, the uneven surface of the pretreatment process 2 is larger than the uneven surface of the pretreatment process 1. This is because in the damage process, pretreatment process 2 is lifted higher than pretreatment process 1. In addition, the number of hydrogen fluoride concaves generated by the hydrofluoric acid etching through the pretreatment process 2 is larger than the number of hydrogen fluoride concaves in the pretreatment process 1. The larger the amount of etching, the larger the uneven surface of the preform 107. In addition, the larger the etching amount, the larger the number of hydrogen fluoride concave surfaces generated by the hydrofluoric acid etching. The uneven surface of the preform 107a in the flame honing example is lower than the uneven surface of the preform 107a in the comparison example not being fired > The number of hydrogen fluoride concaves generated in the example is smaller than the number of hydrogen fluoride concaves generated in the comparative example, as shown in FIG. Therefore, before the preform 107a is etched with hydrofluoric acid, the number of the hydrogen fluoride concaves in the preform 107a and the uneven surface of the preform 107 can be reduced by flame honing the preform 107a. Fig. 53 shows another shape of the surface-treated preform 107. The preform 107 has a handle 340. The handle 34 is made of silica glass, which is mounted on the warped surface as shown in Figure 48 (c) through jointing or mechanical processing. 65 National Paper Standards (CNS) A4 Specification ⑽χ 297 ) -------------------- Order --------- Line (Please read the precautions on the back before filling this page) B7 548247 --5546pifdl doc / Q08 V. Description of the invention) on the cutting surface 334 of the preform 107 treated. When the preform 107 is pulled out into an optical fiber, the preform 107 having the handle 340 can be immediately mounted on the preform pull-out device 500. The diameter of the handle 340 mounted on the cutting surface 334 may be smaller than the diameter of the preform 107, as shown in Fig. 53 (b). FIG. 54 is a schematic diagram of an ultrasonic washing device 404 for washing a heating source. The ultrasonic washing device 404 includes an ultrasonic oscillator 396. A cleaning solution 398 is contained inside the ultrasonic cleaning device 404. Rinse lotion 398 φ contains 10% hydrofluoric acid and 3 ° /. Of nitric acid. Hydrofluoric acid is used to dissolve metal oxides generated on the surfaces of the outer tube 285 and the inner tube 286 of the heating source 122. If the outer tube 285 and the inner tube 286 are made of stainless steel, oxidation on the surfaces of the outer tube 285 and the inner tube 286 will not easily occur. This is because iron, chromium, and nickel are contained in the stainless steel, and a non-chemical film is formed on the surface of the stainless steel to prevent the influence of nitric acid, thereby protecting the surface. The rinse solution 398 may include a soluble organic solvent. Examples of soluble organic solvents are alcohol, acetonitrile, and tetrahydrofuran. The heating source 122 has a plurality of inner tubes 286 having an inner diameter of 1 mm and an outer diameter of 3 mm. The inner tube 286 is located inside the outer tube 285, and the outer tube 285 has an inner diameter of 30 mm. Hydrogen flows into the outer tube 285, and oxygen flows into the inner tube 286. The outer pipe 285 is connected to a hydrogen inlet pipe 392, and all the inner pipes 286 are connected to an oxygen inlet pipe 394. When the glass rod 106 is heated by the flame of the heating source 122, the temperature at the top of the heating source 122 will increase to a temperature between 400 ° C and 70 ° C. Therefore, a metal oxide will be generated on the top surface of the heating source 122. If the heating source is used for a long time, the metal oxide will be gradually removed and become free-flowing dust particles. 66 This paper size applies to China National Standard (CNS) / \ 4 specifications (210 X 297 public love) ------------ 鮝 --------; stare ----- ---- Line · (Please read the notes on the back before filling in this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs

548247 A7 ^^ 16pifdl d〇g / Q08_ B7 V. Description of the Invention αν) Dust particles of metal oxides or contamination by external factors such as glass dust particles attached to the heating source 122 can be removed during the heat treatment of the glass rod 106 Remove. These dust particles can be attached to the surface of the glass rod 106, so the surface layer of the glass rod 106 needs to be honed. If the glass rod 106 is honed, the ratio of the coating of the glass rod 106 to the diameter of the center portion will change. As a result, the optical transmission characteristics of the optical fiber manufactured from the glass rod 106 will deteriorate. Therefore, by washing the heating source 122, external factors can be removed from the heating source 122 and metal oxides added to the heating source 122. In order to use the ultrasonic washing device 404 to wash the heating source 122, first, the hydrogen inlet pipe 392 and the oxygen inlet pipe 394 are opened to the outside. Next, the flame nozzle 390 is lowered directly, and the heating source 122 is immersed in the washing liquid 398. Any air remaining in the outer pipe 285 and the inner pipe 286 is released through the hydrogen gas inlet pipe 392 and the oxygen gas inlet pipe 394. Subsequently, the outer tube 285 and the inner tube 286 are immersed and immersed in the lotion 398 to the top of the water surface. Next, the ultrasonic washing device 404 uses the ultrasonic oscillator 396 to oscillate the ultrasonic waves to wash the heating source 122. Ultrasonic vibration frequency is 10kHz to 100kHz. The heating source 122 is washed by the ultrasonic washing device 404. Metal oxides are present around the stainless steel flame nozzle 390 of the heating source 122 used to heat the glass rod. The area around the flame nozzle 390 of the heating source 122 is immersed in a tritium lotion 398. The ultrasonic oscillator 396 having an output of 500 W washes the heating source 122 with ultrasonic vibration at a vibration frequency of 10 kHz to 100 kHz for 30 minutes. Next, the heating source 122 is removed from the ultrasonic washing device 404, and any washing liquid 398 remaining on the surface of the heating source 122 is washed with pure water. The heat source 122 is then dried. Check the top of the outer tube 285 and inner tube 286, and the paper size of the outer tube 285 and the inner tube applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love) -------------- ------ Order --------- line (please read the notes on the back before filling out this page) 548247 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy No metal oxides or external factors will be found in the pollution. The surface of the glass rod 106 is heat-treated by the rinsed heating source 122. The ratio of the number of the glass rods 106 contaminated with external factors to the total number of the treated glass rods 106 was 6%. The surface of the glass rod 106 was heat-treated by a non-washed heating source 122 for comparison. In this case, the ratio φ of the number of the glass rods 106 with the addition of pollution due to external factors to the total number of the glass rods 106 which have been heat-treated is 15%. This ratio is larger than the ratio obtained through the heating source 122 which has been washed. As described above, the metal oxide generated on the top of the heating source 122 and the contamination by external factors can be removed by cleaning the heating source 122 via the ultrasonic cleaning device 404. The glass rod 106 is heated by the heating source 122 washed by the ultrasonic cleaning device 404, and a high-quality preform 107 can be obtained because less external factors are attached to the glass rod 106. Fig. 55 is a structural diagram of a preform pulling device 500 for pulling out the preform 107 into an optical fiber. The preform pull-out device 500 includes a clip 346 to support the virtual rod 342 to be coupled to the preform 107; a heating device 348 φ to heat the preform 107; and a movable support frame 344 to supply the preform 107 to the heating device 348; a diameter measuring device 352 for measuring the diameter of the optical fiber 350 drawn from the preform 107; a first coating device 354 for performing a first coating process of the optical fiber 350; a first A curing device 356 is used to correct the first coated optical fiber through an ultraviolet light; a second coating device is used to coat the optical fiber 350 for a second time; a second correction device 360 is used to correct this through an ultraviolet light A second coated optical fiber; and a traction machine 362 for winding the optical fiber 350 ° in order to use the preform pull-out device 500 to pull out the preform 107 into an optical fiber 68

The size of this paper is China National Fresh (CNSM4 Secret (210 X -------------------- Order --------- line (Please read the Note: Please fill in this page again.) I. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548247 Α7 ^ ηη / ηη «B7 V. Description of the Invention α4) 350. First, the virtual rod 342 is connected to the movable support 344 The clip M6 supports the preform 107. The beginning of the preform 107 is then set to the prescribed position of the heating device 348, and then the preform 107 is heated. When the tip of the preform 107 softens and drips, this The tip of the dropped preform 107 will be grasped and pulled out through the diameter measuring device 352. When the diameter of the optical fiber 350 reaches the desired diameter, the optical fiber 350 passes through the first coating device 354 and is covered with resin. First coating. This first coated optical fiber 350 is then passed through a first correcting device 356. The optical fiber 350 is then second coated through a second coating device 358, and corrected through a second correcting device 356 When the pull-out diameter and speed of the optical fiber 350 reach a certain threshold, the optical fiber 35 will be wound to a spool through the traction machine 362 Above, not shown in the figure n Through the glass base material first pull-out device 900 and glass rod second extension device 111 as described above, high-quality and small-variable diameter prefabricated parts 107 can be manufactured. Therefore, via glass The basic material of the first pull-out device 900 and the glass rod second extension device 111, and the use of the preform pull-out device 500 to manufacture the pull-out preform 107 can produce high-quality and small-diameter light and fiber. Although the present invention has The above is disclosed in a preferred embodiment, but it is not intended to limit the present invention. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be Subject to the scope of the attached patent application. -------------— 1—Order · ——Aw (Please read the notes on the back before filling this page) 69

Claims (1)

548247 5546pifl-dl.doc / 015 Application for benefit Fan repair Tim 90126003 6. Scope of patent application 1. A method for manufacturing optical fiber, including: 1 | Setting a heating condition for heating a glass rod and setting a prolonged speed of the glass rod, wherein the glass rod is a matrix material of the optical fiber And the setting of the heating condition of the piano by ticket and the length of the extension are based on the extension length of one of the glass rods during the extension ^ k years i H * ft ft i tr% »I h Cang P according to the Heating conditions and the extension speed, heating and extending the glass rod If to produce a preform; and ^^ 1% by extra heating the preform to pull out the preform into a similar thin line shape to produce an optical fiber, where 'set The heating condition includes setting a moving distance to heat one of the burners of the glass rod and an amount of gas supplied to the burner; and setting the extension speed is based on a movement of a clip supporting the glass rod. Speed, the moving speed of the clip is determined by the moving distance of the clip, the moving distance of the clip is determined by a rotation angle of a motor, and the rotation angle of the motor is determined by the position A distance measuring device on the motor is measured. 2. The method for manufacturing an optical fiber according to item 1 of the scope of patent application, wherein: the heating process and the elongation process include a tail end drawing process to reduce a diameter of one end of the glass rod; and the tail The end drawing process is based on the extended length of the glass rod, and the end of the glass rod is pulled out at the end with the heating and extending process. 3 · —A method of manufacturing a preform, which is a parent material of an optical fiber, including: 丨 丨 丨 (Please read the precautions on the back before filling this page) -nn if n 1 «· Order- ---- I —1 t Φ!% I This paper size applies to the Chinese national standard (CNSU4 specification (2) 0x297 g) 548247 ABCD 5546pifl-dl.doc / 015 Sixth, apply for a range of quarries to set a heating condition for heating a glass rod, which is (please first Read the precautions on the back and fill in this page) and determine the extension of the glass rod, the heating status, and the extension of 3, and the extension length must be based on the extension length of one of the glass rods during the extension process; and ^ ^ The heating condition and the extended heating and extension of the glass rod are set according to the setting situation to produce a preform, and wherein the setting of the heating condition includes setting a moving distance of an burner for heating one of the glass rods and An amount of gas supplied to the burner; and S sets the extension speed based on a moving speed of a clip supporting the glass rod, the moving speed of the clip is determined by the moving distance of the clip, the The moving distance of the clip is determined by a rotation angle of a motor, and the rotation angle of the motor is obtained by a distance measuring device located on the motor. The method of manufacturing a preform according to item 3, wherein: the heating process and the extending process include a tail end drawing process to reduce a diameter of one end of the glass rod; and ^ s tail end drawing out The process is based on the extended length of the glass rod, in cooperation with Likou ’s intellectual property, Mabei X. Difei; the end of the seal heat and extension process is pulled out of the end of the glass rod. 5 · —prefabricated parts In the manufacturing device, the preform is made of a fiber to the parent material, including: a heating source for heating a glass rod, which is the material of the preform to the mother; an extension unit for extending the glass rod; Paper size applies to Chinese national standard < CNS) A4 specification (2) 0 X 297 mm 71 548247 5546pifl-dl.doc / 015 A8 R8 C8 D8 6. Application for patent scope A measuring device is provided for driving Supporting a motor of an extension unit of the glass rod to measure a rotation angle of the motor during the extension of the glass rod to know a moving distance of the extension unit; and a control unit to throw On extension According to the moving distance of the extension unit measured by the measuring device during the process, a heating condition of the heating source and the speed of extending the glass by the extension unit are controlled, wherein the heating condition includes the moving distance and supply of the heating source The amount of gas to the heating source. -I ϋ ϋ ϋ ϋ ϋ nn 1 · ii ϋ if · ------- (Please read the precautions on the back before filling out this page) 2 7 -1 tv I This paper size applies to Chinese national standards < CNS ) A4 size (2) 0 X 297 mm