TW548248B - 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 from by further heating the preform to generate the optical fiber.

Description

548248 A7 SS46nifd2.doc / 0 08 B7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention () The present invention relates to a method for manufacturing optical fiber, a method for manufacturing preform, and prefabrication The device manufacturing device can manufacture preforms and optical fibers with small diameter variations. FIG. 1 is 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 glass base material first 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 by pulling out the 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 to produce a preform 107. At the same time, the diameter of the glass rod 106 is reduced to a prescribed diameter. The glass lathe 110 includes clips ns and 119 for supporting the glass rod 106, a rear support platform 116 for moving the clip 119, and a heating source 122 for heating the glass rod 106. One side of the clip 118 is fixed, and the other side of the clip 118 is movable. ~ Traction force can be applied to this paper again in accordance with China National Standard (CNS) A4 specification (21〇X 297 public love) (Please read the precautions on the back before filling this page) * · Order --------- line — | A7 Five, printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 ^ A ^ pif Η 9 Η ^ n / Π Π «_ B7_, invention description (1) is used for card holder 119. The glass rod 106 supported by the clips 118 and 119 is heated by the heating source 122. The heated glass rod 106 can be extended by pulling the glass rod 106 by moving the tail support table 116. Therefore, the diameter of the glass rod 106 is reduced to a predetermined diameter. When the conventional glass base material first extension device 400 is used to extend the glass base material 102, 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 variations in the diameter of the preforms 107 due to the difference in the amount of gas supplied to the heating source 122 and the speed of moving the tail support table 116 in the production of each preform 107. When the curved glass rod 106 manufactured by the conventional glass base material first * extension device 400 is extended, and the prefabricated part 107 is manufactured through the glass lathe 110, the diameter of the preform 107 is changed. 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 produce local-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 separate AL item 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; set the heat according to this setting (please read the precautions on the back before filling this page) ____ I ___ ^ ----------- I --------- -------- 5 κ 548248 ^ __Β7 ______ 5. Description of the invention (ie) Condition and extension speed, heating and extending the glass rod to produce a preform; and heating the preform to draw the preform into one Like a thin line '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 end of the glass rod, and the tail end pull-out process is based on 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. 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 length of the glass rod. Pull out the end of the glass rod. In this setting, the moving distance of the burner used to heat the glass rod and the amount of gas supplied to the burner can be set as the heating condition according to the length of the glass thousand. 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. This paper is again applicable to China National Standard (CNS) A4 (21〇 X 297 mm) (Please read the precautions on the back before filling this page)

1T --------- Line J Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 A7 __ς / πη Q_B7 V. Description of the Invention (4) Provide a method for manufacturing optical fiber. This setting uses an encoder. It 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. A method for manufacturing optical fiber is provided, and the setting situation is based on the tension generated on the glass pole during the extension process as the number of set heating conditions and the extension speed. A method for manufacturing an optical fiber is provided for heating a heating source of a glass rod. As the elongation process proceeds, the longitudinal movement of the glass rod is controlled, and the elongation speed is controlled during the heating and elongation process, so that the tension before the heating source moves a predetermined distance is substantially The average tension becomes 110% or less after the heating source moves a predetermined distance. A method for manufacturing an optical fiber is provided, in which the tension is controlled during the heating and elongation process, 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 a fixed speed. This setting is based on the tension 'setting and the speed of the clip used to support the glass stem is extended. Provide a method for manufacturing optical fiber. This 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. 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 mark position, and the heating end and the extension process are pulled out at the tail end This paper size applies to Chinese national standards (CNSM4 specification (210 X 297 mm) (Please read the precautions on the back before filling out this page) -------- Order · --------— A -wi --- 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 548248 Α7 _q 心 pifH:)-Hnr / nng B7 V. Splash clarification (β) end. This setting can be based on the position of the cut provided on the connection between the glass rod and any of the virtual rods 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. 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 according to the glass. The average diameter of the diameters in the plural positions of the poles sets the heating condition. 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 where the tail end of the glass rod is pulled out by the tail end is detected, and the flame honing is set according to the position of the region where the tail end is pulled out. The honing range of the glass rod is based on the diameter of the area pulled out by the tail, and the heating power condition of the flame is set, and the flame is heated and extended through the heating power condition to hoist the glass from the rod; the honing range of the glass rod. According to another aspect of the present invention, a method for manufacturing an optical fiber is proposed, which includes heating and extending a glass rod, which is the parent material of the optical fiber, to produce a preform; and additionally heating the preform to pull the preform into a shape similar to a thin wire. 'To produce an optical fiber; and, this heating and extending process has pre-heating the glass rod until the specified area of the glass rod is softened, and the tail end is pulled out of the predetermined area to reduce the diameter of the specified area and to use additional heating --------------------- Order · --------— A_w. (Please read the notes on the back before filling in this page) 8 A7 548248 5 546pifd2.doc / 008__β7 5. Description of the invention (C) and extension of the specified area to make one end of the glass rod. A method for manufacturing an optical fiber is provided. The tail-end drawing process further includes a heating process for heating an area through a flame. Compared with the center of a specified area, which is mostly directed toward the middle surface of a glass rod, the flame The 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. A method for manufacturing a preform 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 performed according to the duration of the tail end drawing process. With the end of the extension process, pull out the end of the glass rod. 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 also 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. Yan Hai 丄 fJLf sun. A method for manufacturing a prefabricated part is provided, and the setting situation is based on the tension generated on the glass rod in the stomach extension as the number of strokes, and the heating extension rate of the dog is set. 9 This paper size applies to China National Standard (CNS) A4 size ⑽ x 297 public love) I ----------- 41 ^ -------- Order --------- (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 548248 A7 5 546pifd2.d〇c / 008 B7 V. Description of the invention (ο) Provide a method for manufacturing prefabricated parts, The heating source used to heat the glass rod is moved along the longitudinal direction of the glass rod as the elongation process progresses, and the elongation speed is controlled during the heating and elongation process, 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 has moved a predetermined distance. A method for manufacturing a preform is provided, in which the tension during heating and extending process is controlled 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 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 marker provided on the connection between the glass rod and any virtual rod as a number. It is connected to either end of the glass rod to set the heating condition. With extended speed. The heating process and the 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 is based on the marked position ′, and the heating and extension process pulls the end of the glass rod from the end. 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 through an extended cycle The length change of the glass rod along the axis of the glass rod is used as a number to detect the position of the region where the rear end of the glass rod is pulled out by the tail, and to pull out according to the tail (please read the note on the back first) Please fill out this page again) »

Order --------- Line J Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, this paper is also applicable to the Chinese National Standard (CNS) A4 specification (21 × x297 mm). Printed by the cooperative 548248 5 546pifd2.doc / 008 5. In the description of the (s) area, set the honing range of the glass rod through flame honing, and set the heating power status of the flame according to the diameter of the area pulled out by the tail end. , And the honing range of the glass rod by the flame of the heating power state during the heating and extending 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 to reduce The diameter of the specified area is used to make one end of the glass rod through additional heating and extension of the specified area. 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 with the extension of the glass rod; and-a control unit for controlling the heating condition of the heating source and 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. Provided is a device for manufacturing a prefabricated part, the measuring device measures the moving distance of the extension unit that changes as the extension progresses, and a control unit: controls based on the moving distance of the extension unit measured by the measuring device, and controls Heating conditions and extended speed. (Please read the precautions on the back before filling in this page) · Order --------- Thread · This paper rule X public square ------ Consumption Cooperation of Employees of Intellectual Property Bureau of the Ministry of Economic Affairs Du printed 548248 A7

5. Description of the invention (C |) Μί There are a total of devices for manufacturing prefabricated parts. The measuring device measures the tension generated by the extension rod as a number, and the control unit generates the glass rod on the basis of the measured glass rod. The tension controls the heating condition and the extension speed. ^ Wei # ~ A device for manufacturing prefabricated parts, the heating source moves the glass rod longitudinally 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 no% or more: Lower the average of tension after moving the heat source a specified distance plus 1. The stomach is a device for manufacturing prefabricated parts. The control unit controls the tension so that the tension before the heat source moves a predetermined distance generally becomes from 80% to 110% the average tension after the heat source moves a predetermined distance. This prescribed distance is generally between 50rnm 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 of the glass rod, and control the heating condition according to 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 following describes the preferred embodiments and the accompanying drawings in detail, as follows: (Please read the notes on the back before filling in (This page)-· ___-t 一 eJ · ϋ ϋ nn ϋ i ^ i I HI 1- n I— In nnun I— -ii 1 II · ϋ This paper size applies to China National Standard (CNS) A4 (210 X 297 public love) 548248 5 5 46pifd2.doc / 00 8 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (()) A simple illustration of the drawing: The first unprintable 不: a traditional glass Schematic diagram of the first extension device 400 of the basic material; FIG. 2 shows a structural diagram of a conventional glass lathe u0; FIG. 3 shows a system diagram of the optical fiber manufacturing device of the present invention; Figure 5 shows the flowchart of the optical fiber manufacturing method of the present invention. Figure 5 shows the structure of the first extension device 900 based on glass. »Figure 6 shows the structure of the first extension device 402. , Which supports a standard rod 138 via a base material fixing unit 136 to adjust It is used to extend the axis of the glass base material 102. FIG. 7 shows a detailed flowchart of the first extension process (S204) of the glass base material in FIG. 4; FIG. 8 shows the first extension device 402. The structure diagram, which supports the standard pole 138 via the extension clip 142; FIG. 9 shows the structure diagram of the first extension device 402, which supports the standard pole 138 via the suspension mechanism 134 and the extension mechanism 140; FIG. 10 shows Figure 1 is an example of using the extension rollers 144a and 144b instead of the extension clip 142 on the 1140; Figure 11 shows the use of the extension rollers 144a and 144b instead of the extension clip 142 on the IJ 140 Figure 12 shows a schematic diagram of the glass base material 102, the degree of curvature of which is measured; Figure 13 does not show a mechanism diagram for controlling the rotation speed of the extension rollers 144a and 144b through the first extension device 402 ; This paper size applies to China National Standard (CNS) A4 specification (210 x 297 public love) --------------------- Order -------- -^ — ^ _ Wl (Please read the notes on the back before filling this page) 548248 A7 B7 & Description of the invention (丨 丨) Figure 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 of the glass rod 106; Figure 15 shows the extension rollers 144a and 144b. Surface deformation

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Figure 16 shows the displacement diagram of the metal pipe when the metal pipe is loaded by the extension rollers 144a and 144b with the number of 300 in Figure 15; Figure 17 shows It is the displacement map of the center position of the underheated area of the hot car through 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 the 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 another embodiment of the glass rod conveying device 380. Fig. 24 shows the glass rod conveying device 380 of Fig. 23 when the glass rod conveying device 380 conveys the glass rod 106. Figure 25; Figure 25 shows the glass rod of the present invention. Schematic diagram of extension unit 1U; Fig. 26 can not draw the detailed flow chart of the second extension process (S206) of the glass rod in Fig. 4; (Please read the precautions on the back before filling this page) Order-line -1 · This paper size is in accordance with Chinese National Standard (CNS) Al specification (21〇X 297 public love) 548248 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5 5 46pifd2.doc / QO 8____________ Note (卩) Section Figure 27 shows an example of the cooling device 33 on the fixed clip U8 and the movable clip 119 of the second extension device 111 of the glass rod. Figure 28 shows the fixing of the example and the comparison example Probability map of the clips ns and the movable clip 119; Figure 29 shows the relationship between the 5 large 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 a structural diagram of the second extension device in glass rod 'it has a force measuring device 282; 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 glass rod 106 Figure 33 shows the process of extension according to Figure 31 (S154) 'Glass = p 106 is extended; Figure 34 shows the change in tension of the glass rod 106 during the early extension stage of the example Figure 35 shows the change in tension of the glass rod 106 in the early extension phase of the comparative example; Figure 36 shows the change in the diameter of the glass rod 106 after the glass rod 106 is extended Figure 37 shows a detailed flowchart of the tail end drawing process (S158) of Figure 26; Figure 38 shows a schematic diagram of the cutout 284, which is detected at the tail end drawing position of Figure 37 The measurement process (S169) is 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 public love) -------- ------------- Order --------- ^ (Please read the notes on the back before filling this page) 548248 A7 5 546pifd2.doc / 008 B7 Intellectual Property of the Ministry of Economic Affairs Bureau employee consumer cooperative printed five inventions (β) Figure 39 shows a schematic diagram of the mark 287, which is used for the connection between the glass rod 1G6 and the virtual rod 108 As another example of marking, FIG. 40 shows a 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 Shown during the drawing process of the tail end of the glass rod 106 in the flowchart shown in FIG. 37, the movement diagram of the heating source 122 and the tail support platform 116; FIG. 42 shows the drawing at the tail end of FIG. 37 In the process of pulling out (S158), another example of the setting method of the tail end drawing out process; FIG. 43 shows another process of the tail end drawing out process (S158) in FIG. 37 Another setting example of the method; FIG. 44 shows a structural diagram of the heating source 122 of the second extension device 111 of the glass rod; FIG. 45 shows a plan view of the top of the heating source 122; FIG. 46 shows It is 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, and its diameter is reduced and reduced during the tail end drawing process (S158). Melting; Figure 48 shows another shape of the tip of the preform 107, the end of which is extended; Figure 49 shows Fig. 26 shows the 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 view of the preform 107a, which is etched by hydrofluoric acid The processing of the examples shown in Figure 51 and Figure 52. Figure 51 shows the number of hydrogen fluoride concaves on the preform 107 of the counting example and the comparison example by visual inspection; (Please read the precautions on the back before filling This page) d -I line · This paper size is applicable to the national standard (CNS) A4 specification (210 X 297 public love) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 A7 5 546pifd2.doc / 008 B7 ^ Explanation ((0) Figure 52 shows the uneven surface of the preform 107 after the hydrofluoric acid etching process of the example and the comparative example; Figure 53 shows the surface treated Another shape of the preform 107; FIG. 54 shows a schematic diagram of the ultrasonic washing device 404 for washing the heating source; and FIG. 55 shows the extension of the preform 107 to Schematic diagram of a preform pull-out device 500 for manufacturing optical fibers. 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 second Extension device 112: Supporting table 114, 116: Rear support tables 118, 119, 346: Clip 120: Moving bracket 122: Heating source 124: Diameter measuring device 130: Extension furnace 134: Suspension mechanism 136: Basic material fixing unit 138: Standard rod 140: Extension mechanism 142: Extension clips 144a, 144b: Extension rollers 148, 149: Bearing 150: Measuring device 152: Diameter measuring device 154: Extension axis 156: Diameter control unit 158: Position control unit 176 : Burner 178: Flame 190: Hydrogen supply pipe 192: Oxygen supply pipe 194: Annular gas inlet 196: Cooling water The paper size is applicable to Chinese National Standard (CNS) A4 (210 X 297 mm) (Please read the back first Please pay attention to this page and fill in this page again) --- Aw ---- Order --------- line. ) 198: Cooling water supply Tube 200: Cooling water discharge tube 204: Feeder 206: Extension device 208: Support foot 210: Rotary table 212: Motor 2M: Timing conveyor belt 216: Burner holder 218: Extended melting clip 224: Storage containers 234a, 234b , 236a, 236b Supporting element 244: Cylinder storage box 245: Movable supporting element 246: Fixed supporting element 248: Operating switch box 250, 264: Actuator 252: Support frame 254: Manipulator 256, 268: Rotary shafts 257, 258 · Shaft nails 260: Tray 262: Pillar 266: Coupling shaft 270: Sliding pusher 272: Moving bracket encoder 273: Rear end support frame drive encoder 274: Moving end motor 2 is: Rear end support Rack drive motor 276: Chain 278: Flow controller 280: Control unit 282: Tension measuring device 284: Cutout 285: Outer tube 286 ... Inner tube 287: Fluorescent paint 288: Oxygen outlet 290: Flammable gas outlet 294: Flame 296: Inert gas passage 298: 1 Blue air flow rate control unit 300: Valve 302: Connection element 3104: Control element 306 · Drive source 308: Oxygen channel (Please read the precautions on the back before filling this page ) Paper size applies to China National Standard (CNS) A4 (210 x 297 public love) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248-^ 46pifd2.doc / 00R__B7 1. Description of the invention ((C) 310: Oxygen flow rate control Unit 312: Flammable gas passage 314: Flammable gas flow rate control unit 316: Branch tool 330: Cooling device 332: Melting section 334: Cutting surface 336: Tapered section 338: Thin section 340: Handle 346: Clip 344 : Movable support 348: heating device 350: optical fiber 352: diameter measuring device 354: first coating device 356: first correction device 358: second coating device 360: second correction device 362 = traction machine 370 : Glass rod melting device 380: Glass rod transmission device 390: Flame nozzle 392: Hydrogen inlet tube 394: Oxygen inlet tube 396: Ultrasonic oscillator 398: Rinse solution 400, 900: Glass base material One-extension device 4002: first extension device 4004: ultrasonic washing device 500: preform drawing device 600: glass base material generating device 700: glass base material dehydration and sintering device this Shu Tomoyuki detailed description of the present invention will be described using the examples illustrate. However, the following examples do not limit the scope of the invention as described in the scope of patent applications. Moreover, it is not necessary for the invention that all features described in the embodiments or combinations thereof are necessarily quotient. Second, although the present invention has been disclosed in a preferred embodiment, the fan of the present invention is 19 paper size (CNS) A4 specifications 19〇χ 297 ------- --------- ------------ Order --------- ^ ^ _wl (Please read the notes on the back before filling this page) A7 B7 548248 5 5 46pifd2. Doc / 0Ο 8 5 The invention description (0) is not limited to these examples. 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. FIG. 3 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 of an optical fiber; a glass base material dehydrating and sintering device 700, Used for dewatering and sintering glass base material 102; —Glass base material first extension device 9G0 for extending glass base material 102 to produce a glass rod 106; and a glass rod transmission device 380 for transmitting glass A rod 106; a second extension device 111 for a glass rod for extending the glass rod 106 for a second time to produce a preform 107; and a 'preform extraction device 500 for pulling out the preform 107 to produce One fiber. FIG. 4 shows a flowchart of the optical fiber manufacturing method of the present invention. The glass base material generating device 600 uses the VAD method, the vapor axis deposition method, or the like (S200) to generate the glass base material 102. 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 apparatus 700 (S202). The diameter of the glass base material 102 is usually 110 mm to 200 mm. Compared with the diameter of 30 mm to 80 mm, it is more practical for pulling out optical fibers. 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). Glass rod 20 paper & degree applicable to China National Standard (CNS) A4 specification ⑵〇χ 297 hair)--------------- 0 -------- II --------- Line '(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 548248 A7 5 546pifd2.doc / 008 B7 (¾) (Please read the precautions on the back before filling this page) 106 Next, it will be heated and extended to a specified diameter by the glass rod second extension device 111 to produce a prefabricated part 107 (S206) The preform is heated and extended to a similar thin wire form through the preform pull-out device 500 to produce an optical fiber (S210). Figure 5 shows the structure of the first extension device 900, which is a glass-based material. The first extension device 900 for the glass base material 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 It has a heating furnace 100, and a suspension mechanism 134 is provided above the extension furnace 130. The suspension The mechanism 134 is used to supply the glass base material 102 to the inside of the extension furnace 130 at a prescribed speed. The first extension device 402 further has an extension mechanism 140 provided below the extension furnace 130 to support the reduced-diameter glass. The rod 106 and the glass rod 106 are pulled down at a predetermined speed. The suspension mechanism 134 has a base material fixing unit 136 to support the glass base material 102. The extension mechanism 140 has an extension clip 142 to support the glass Rod 106. The glass rod melting device 370 has a burner 176, a rotating table 210, a certain time conveyor belt 21, a motor 212, a support foot 208, a burner holder 216, an extension device 206, and an extension Dissolve the clip 218. The glass base material 102 printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is installed on the base material fixing unit 136 and sent into the heating furnace 100 at a predetermined speed. The glass base material 102 passes through the heating furnace 100 is heated, and then supported and pulled out through the extension clip H2 to reduce the diameter to produce a glass rod 106. The glass rod 106 is extended at a speed through the extension device 206 It is pulled out to obtain a suitable diameter, so that the glass base material 102 is extended to the desired diameter. At the same time, a diameter measuring device 152 is used to

This paper is fully compliant with the Chinese National Standard (CNS) A4 specifications (210 X 297 Public Love I A7 548248 __5 546pifd2.doc / 008 _ B7. V. Named Instructions ((^) Measure the diameter of the glass rod 106. In order to extend The glass rod 106 to the desired diameter, the feeder 204, the heating furnace 100 and the extension device 206 will be controlled based on this measurement result. The slope glass year 106 is extended to a specified diameter and After the length, part of it will be melted by the burner 176, and the bubble excluding the bubble or the diameter excluding the diameter is about 0.3mm or more. The combustion of oxygen and hydrogen is a reasonable 1% heating device of the burner 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 rotary table 210 via the support foot 208. The rotary table 210 passes a driving device such as a motor 212 and Rotate via timing conveyor 214. Rotary table 210 is mounted on burner rack 216. Glass rod melting device 370 heats glass rod 106 via rotating burner 176 to melt glass rod 106 'and use a specified speed and pull out Extension of strength Unclip the clip 218 to extend the glass rod 106. Figure 6 shows the architecture diagram of the first extension device 402, which supports a standard rod 138 via a basic material fixing unit 136 to adjust the glass base material. The axis of 102. The suspension mechanism 134 has a mechanism not shown in the figure for adjusting the vertical inclination of the base material fixing unit 136. The extension mechanism 140 has a mechanism and is not shown in the figure for adjusting the extension card. The vertical inclination of the clamp 142. The extension mechanism 140 has a mechanism, which is also not shown in the figure, and is used to adjust the position of the extension mechanism 140 within the horizontal phase angle of the rear and front and the left and right. The figure shows a detailed flow chart of the first extension process (S204) of the glass base material in Fig. 4. The first extension process (S204) of the glass base material has a single extension to extend the whole week. The extension axis of the device 402. First, a 22-sheet paper is fully compliant with the Chinese National Standard (CNSM4 ⑵0 X 297) -------------.— I—Order · ----- -· (Please read the notes on the back before filling this page) Intellectual Property of the Ministry of Economic Affairs Printed by the Bureau's Consumer Cooperatives Printed by the Consumer Property Cooperative of the Ministry of Economic Affairs Intellectual Property Bureau's Consumer Cooperatives 548248 a7 5 546pifd2.doc / 008 β7 V. Description of the invention) Metal or ceramic rods are formulated as a standard bar 138. The linear standard bar 138 requires It is guaranteed. The standard rod 138 usually has the length of a glass base material 102, and the virtual rod is connected to the glass base material 102. The linear state axis of the standard rod 138 is guaranteed along the full length of the person. As shown in Fig. 6, the base material fixing unit 136 via the suspension mechanism 13 4 supports the standard rod 138 (S 1.10). Next, 'the inclination A of the suspension mechanism 134 is adjusted so that the direction of the standard rod 138 conforms to the vertical direction (S112). Subsequently, after the adjustment process is completed, the standard rod 138 is removed from the base material fixing unit 136 (S114). FIG. 8 shows a structural diagram of the first extension device 402, which supports the standard rod 138 via the extension clip 142. An extension clip 142 via an extension mechanism 140 supports a par 138 (FIG. 7, S116). Next, adjust the inclination B of the extension mechanism 140 so that the direction of the standard rod 138 conforms to the vertical direction (FIG. 7, S118). At the same time, the extension clip 142 is maintained near the center of the longitudinal direction of the par 138 in the longitudinal direction. The steps of adjusting the suspension mechanism 134 and the extension mechanism 140 can be reversed. The extension mechanism 140 may be adjusted first, and then the suspension mechanism 134 may be adjusted. FIG. 9 shows a structural diagram of the first extension device 402, which supports the standard bar 138 via both the suspension mechanism 134 and the extension mechanism 140. After the adjustment steps of the suspension mechanism 134 and the extension mechanism 140 are completed, the standard rod 138 is supported by the basic material fixing unit 136, and the bottom end of the standard rod 138 is supported by the extension clip 142 (Fig. 7, S120). Next, adjust the horizontal position C of the extension mechanism 140 or the horizontal position C 'of the suspension mechanism 134 so that the horizontal direction difference between the vertical axis and the standard rod 138 is less than 0.5 mm per lm length (Figure 7, S122) . Subsequently, the glass base material 102 was extended by using the first extension device 402. The paper size was adapted to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------------ 0 ---- ---- 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 548248 A7 _5546pifd2.doc / OQ8 B7 V. Invention Explanation (J) to produce a glass rod 106, whose extended axis is adjusted (Fig. 7, S124). Finally, the glass rod 106 is melted via the glass rod melting device 370 (Figure 7, S126). Figures 10 and 11 show the use of extension rollers 144a and 144b on the extension mechanism 140 instead of the extension clip 142. Example diagram. If the extension rollers 144a and 144b 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 140 is adjusted by adjusting the horizontal inclination of the straight line F. The straight springs F connect two rotation axes between the extension rollers 14 and 144b. 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 shown in FIG. 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 • The standard pole 138 supported by the extension clip 142 (FIG. 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 H0 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, the paper & degree applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) --- --------- Aw -------- Order --------- line (please read the precautions on the back before filling this page) Employee Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs Printed 548248 A7 S 546pifd2.doc / 0Q8 B7 V. Description of the invention () There will be no gaps, and it is suitable for extending the curved glass base material 102 to obtain a reduced diameter within a desired linear state range. Glass rod 106. 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. Therefore, the bending moment which 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. Fig. 12 shows a schematic diagram of the glass base material 102, and its bending degree is measured. The glass base material 102 is extended through the extension device 402, and its vertical tilt is adjusted through the adjustment method described above. Next, the curvature of the glass rod 106 was measured. First, the glass rod 106 is placed on the two bearings 148 and 149 mounted horizontally so that the straight connection can be the top of the bearings 148 and 149 of a standard line. Next, the scanning measurement device 150 is used to measure the maximum or minimum height of the height from the standard line using a device such as a female mouth and a scale measurement device along the glass rod 106. 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 maximum value of the first measurement and the minimum value of the next measurement or the maximum value between the minimum value of the first measurement and the next measurement t is set to "2h". This frame is divided into "h" by the length L1, which is the distance between the two bearings and M9, and represents the linear state of the glass rod 106 per unit length. 25 This paper size applies to China National Standard (CNS) A4 (21〇X 297 mm) -------------------- Order -------- -Line (please read the precautions on the back before filling this page) 548248 5 546pifd2.doc / 008 A7 B7 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (妁) No. 5 with virtual rods The straight glass base material 102 will be extended by the first extension device 402 on an adjusted extension axis to generate a five-segment glass rod 106. The linear state of each glass rod 106 is measured by the method shown in Figure 12. 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 40. 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) 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 central position between the heat-softened area and the 26th paper size. Applicable to the Chinese national standard (CNSM4 specification ⑵〇χ 297 公 爱) ----------------- --- Order --------- line (please read the precautions on the back before filling this page) A7 548248 5 546pifd2.doc / 008__B7__ V. Description of the invention (#) Extend the axis of the extension device 402 The number of deviations between 154. The position control unit 158 further calculates a correction value for the rotation speed, which can reduce the number of deviations between the center and position of the thermally softened region, the position, 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 in accordance with the increased correction speed and the rotation speed of the extension roller 14. Figure 14 does not show 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. The number of deviations between the center and position of the heat-softened area of the glass base material 102 and the extension 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 plate and the pressing force or the friction force of the glass rod 106. Since 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 144 & 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) " -------------- ------ Order --------- line ^ 一 ^ (Please read the notes on the back before filling out this page) Printed by the Intellectual Property Bureau Employee Consumption Cooperative of the Ministry of Economy Employees ’Intellectual Property Bureau Employee Consumption Printed by the cooperative 548248 A / 5546pifd2.doc / 008 B7 5. The invention description (+) is different. The number of batches is the number of glass base materials 102, all of which are extended. If the number of batches increases, deformation and wear increase. As a result, the number of extensions between the extension rollers H4a and 14b 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 the displacement of the center position of the heating area of the metal pipe when the metal pipe system is loaded by 300 extension rollers 144a and 144b 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. Curve B shows that the change in displacement in the axial direction of the extension rollers 144a and 144b 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 1500 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 144a and 14 are controlled at the same rotation speed. The vertical axis represents the change in the center and 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 The meaning of this paper applies to the Chinese National Standard (CNS) A4 specification (0 x 297 mm) -------------------- Order · ------- • (Please read the precautions on the back before filling this page) 548248 A7 5546pifd2.doc / 008 B7 V. Description of the invention (& Please read the precautions on the back before filling this page) The same as using Figure 17 The diameter measuring device 152 is used to measure the diameter of the heat-softened area of the glass base material 102, and a glass rod 106 having a predetermined diameter can be manufactured. 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 ring burner Π6 can effectively heat the glass rod 106, so it is not necessary to overheat 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. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs According to the above embodiment, the glass rod 106 will be melted. The glass base material 102 having a diameter of 120 mm is heated by the ring burner 176 for ten minutes. Hydrogen is supplied to the annular burner 176 at a rate of 300 liters / minute and oxygen at a rate of 120 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 rod 106 is transparent. The paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) " 548248 A7 ^-^^ 5 46pifd2.doc / 0Q8__B7 ___ 11 instructions (Please read the precautions on the back before filling out this page.) Figure 20 shows the block diagram of the glass rod conveyor 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 force with 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. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs There are only two adjustment levels for cylinder 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 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. 30 This paper size applies to Chinese national standards (CNSM4 specification (210 X 297 mm)-printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 A7 5 546pifd2.doc / 008 B7 V. Description of the invention) It 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 for supporting the glass rod 106, and a pair of support members 236a and 236b are provided under the support members 234a and 234b. The supporting elements 234a, 234b, 236a, and 236b are generally semi-circular in shape, and they surely support the glass rod 106 in 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. Each of the wiping members 234a and 234b and one of the supporting members 236a and 236b is nailed to the post 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 a diameter of 80 mm and the angle between the inclination α between the support 262 and the glass rod 106 can range from -3.1 degrees to +8.1 degrees in the front and back directions. The angle between the inclination point 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. 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) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 A7 5 546pifd2.doc / 008 B7 5 2. Description of the invention () ¾ To the ground in the supporting elements 234a and 234b (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 245, 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 234b and the supporting members 236a and 230b 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 stem 106 on the storage site, an air pressure greater than one * fixed will be supplied to the cylinder to raise and lower the glass rod conveying device 380. Therefore, the weight of the glass 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 through a rotation axis 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. The paper wattage is in accordance with 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) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 A7 5 5 46pifd2 .doc / 00 8 ηγ 5. Description of the invention (eg) Brother 24 0 FIG. 23 is a movement diagram of the glass rod conveying device 380 when the glass rod conveying device 380 conveys the glass rod 106. Figure 24 (a) is a plan view showing a glass rod conveying device 380, which supports the glass rod 106. Section 24 (b) is a sectional view of the Fubu glass dry 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. 2403), 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 rotation mechanism A to rotate the glass rod 106 from a vertical to a horizontal position, but also the rotation mechanism B has 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 is a block diagram of a second extension device of a glass rod according to the present invention. The second extension device 111 of the glass rod includes a holding table U2, 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. The drive motor 2 is a tail end support frame drive encoder 273, a diameter measuring device 124, a mobile support 120, a sliding pusher 270, a mobile support motor 274, a mobile support encoder 272, a chain 276 and One 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 the two ends of the glass rod 108, respectively. The heating source 122 is heated through the solid paper. The paper size is applicable to the Chinese National Standard (CNS) A4 (210 X 297 mm). ------- Line 4P (Please read the notes on the back before filling this page) A7 B7 548248

5 546pifd2.doc / OOR 5. Description of the invention (1) (Please read the precautions on the back before filling out this page) Glass rod 106 supported by clamp 118 and movable clamp 119. The flow controller 278 adjusts the amount of gas supplied to the heating source 122. By moving the movable clip 1 19, the tail end support 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 end support frame 1 16 can be estimated from the number of rotations of the end support frame drive motor 275 detected by the 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 120 moves the heating source 122 and the diameter measuring device 124. A mobile stand 120 is provided on the pallet 112. The moving bracket 120 is movable along the sliding pusher 270, and is mounted parallel to the axis connecting the fixed clip 118 and the movable clip 119. The mobile stand 120 is driven by the mobile stand motor 2 7 4 through the sliding fj pusher 2 70. The moving bracket encoder 272 controls the speed of the moving bracket motor 274. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 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 280 controls the moving speed of the tail end support frame 116 by controlling the tail end support frame driving encoder 273, and the tail end support frame driving encoder 273 is used to control the rotation speed of the tail end support frame driving 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 support brackets 114 and 116, fixed clip 118, movable clip 119, tail end support frame drive motor 275 and tail end support frame drive encoder 273 constitute 34 This paper is in accordance with 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 548248 A7 5 5 46pifd2.doc / Q08 B7 V. Description of the invention (h) 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 end support U6 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 is a detailed flowchart of the second extension process (S206) of the glass rod in 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 ill. 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 direction of the glass rod 106 is measured (S152). According to the measured diameter and position corresponding to the measured diameter, the extension speed in a plurality of positions in the axial direction of the glass rod 106 is set. Based on the average diameter of the diameter of the glass rod 106, a heating condition including the amount of gas provided to the heat source 122 and the moving distance of the heating source 122 is set (S153). The glass rod 106 is heated by a heating source I22 having a preset heating condition, and is gradually extended by a tail support frame Π6 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 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, the paper size applies the Chinese National Standard (CNS) A4 (210 x 297 mm) ---------------- ---- Order --------- line " 41 ^ · (Please read the precautions on the back before filling in this page) 548248 A7 R7 5 546pifd2.d〇c / 0〇g 5. Description of the invention (H) Change, measure the moving distance of the tail end support frame 116 by driving the encoder 273 through the tail end support frame. 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 116 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 is thus changed into a conical 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 detection position 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 as each preset flame condition from the set flame honing start position to the set flame honing completion position (S162). After the flame honing, the shape and diameter 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 paper rule > degree applies Chinese National Standard (CNS) A4 specification (210 x 297 mm) -------------------- Order ------ --- line ^ 11 ^ (Please read the notes on the back before filling out this page) Printed by the Intellectual Property Bureau Employee Consumer Cooperative of the Ministry of Economic Affairs 548248 A7 B7 546pifd2.doc / 008 i. Description of Invention (#) As mentioned above, in Before each * extension (S154), tail end pull out (Sl58) and flame honing (S162) process, the diameter will be 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. As a result, a glass rod 106 of stable barrel quality can be manufactured. FIG. 27 illustrates an exemplary diagram of the cooling device 330 and the second extension device 111 of the glass rod 111 provided on the fixed clip 118. The cold gully device 330 protects the fixed clip 118 and the movable clip 119 from the radiant heat generated from the heating source 122. This can be achieved by circulating cooling water around the fixed clip 118 and the removable] 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 card holder Π8 and the movable card holder 119 to control the deformation of the fixed card holder 118 and the movable card holder Π9. This allows controlling the temperature rise of the fixed card holder 118 and the movable card holder Π9. Therefore, the accuracy of transmission of the driving force of the glass rod 106 for the spinner is maintained, and the heating effect of the glass rod 106 becomes more equal. Therefore, the variation in the diameter of the glass rod 106 is reduced. (Example) Through a fixed clamp 118 and a movable clamp 119 having a cooling device 330 and a heating source 122 as shown in FIG. 27, a glass rod 106 with a diameter of 50 mm and a length of 1,000 mm is flame-honed by flame. 150 SLM oxygen (02) Hydrogen (H2) with 300 SLM is supplied to the heating source 122 as a combustion gas. The glass rod 106 is rotated at a speed of 15 rpm. The glass rod 106 is flame-honed by moving the 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. 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 out this page) Printed by the Intellectual Property Bureau Employee Consumer Cooperatives of the Ministry of Economic Affairs Printed by the Intellectual Property Bureau Employee Consumer Cooperatives of the Ministry of Economic Affairs Printing 548248 A7 5 546pifd2.doc / 008 B7 V. Description of the invention (8) Temperature graph of the clamp 118 and the movable clamp 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 Π8 and the movable clip 119, the driving force of the rotating glass rod 106 is changed. Therefore, the diameter change of the flame honing glass rod 106 is only 0.02%. (Comparative example) When the cooling device 330 is removed from the fixed clip 118 and the movable clip 119 in FIG. 27, The glass rod 106 is honed by flames under the same conditions as in 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 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 largest 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 that of the paper heated by the heating source 122 due to the movement of the heating source 122. The paper & Mm) --------------------- Order · -------- Line ^ __ w. (Please read the notes on the back before filling this page ) A7 548248 __5 546pifd2.doc / 0Q8 _B7_ 5. Description of the invention (4). In the position of the highest temperature of the glass rod 106, the extension speed per unit becomes the maximum. What is desired is to control the heating power of the heating source 122 and the moving speed of the movable clip 19 according to 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 of the target 値 and the diameter measured at the position of the maximum extension speed of the glass stem 106. This can be accomplished by providing a diameter measuring device 124 at a distance from the heating source 122. The above-mentioned] heat source 122-a position at a certain distance 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 124 is provided at a position from 10 mm to 50 mm away from the heating source 122, wherein the heating source 122 is located in a direction opposite to the moving direction of the force port heat source m. If the heating source 122 used to heat the glass rod 106 is an oxyhydrogen burner, the flow rate of the hydrogen gas supplied to the heating source 122 is set from 30 liters / minute to 500 liters / minute. The ratio of the hydrogen to oxygen flow rate is set from 1.5 to 3.0. The moving speed of the heating source 122 is controlled within the limits of 2 mm / min and 65 mm / min. If the flow rate of hydrogen is less than 30 liters / minute, the heating capacity 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 flow rate of hydrogen to oxygen 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 122 used to heat the glass rod 106 is a propane gas burner, the flow rate of the propane gas supplied to the heating source 122 is set from 1 liter / minute to 15 liter / minute. The ratio of propane gas to oxygen flow rate is set from 0.1 to 0.3. The moving speed of the heating source 122 is controlled at 2mm / min and 65. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 public love) ----------------- --- Order --------- line (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 548248 A7 5 546pifd2.doc / 008 B7 V. Description of the Invention (Θ) (Please read the precautions on the back before filling this page) within the limit of mm / min. If the propane gas flow rate is less than 1 liter / minute, the heating capacity will be insufficient, and if the propane gas flow rate 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 outside the above range, it is difficult to extend the glass rod 106 at this time because the heating amount becomes insufficient. The moving speed of the heating source 122 is preferably controlled within the limits of 2 mm / min and 65 mm / min. If the moving speed of the heating source 122 is lower than 2 mm / min, it takes more time to extend the glass rod 106. In contrast, if the moving speed of the heating source 122 is higher than 65 mm / min, since the speed of heating the glass rod 106 to its central portion is too fast, it will be difficult to extend the glass rod 106 at this time. (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 moving speed of the heating source 122 and the tail support frame 116 is controlled based on the difference between the measured diameter of the glass rod 106 and the target diameter. The combustion conditions of the heating source 122 were set to include a hydrogen flow rate of 224 liters / minute, a ratio of hydrogen to oxygen flow rate of 2.5, and a moving speed of the heating source 122 of 11 mm / min. The change rate of the diameter of the glass rod 106 was 0.9% after the extension process. (Example 2) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Set the distance between the heating source 122 and the diameter measuring device 124 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. Proportion of the flow rate of hydrogen to oxygen 40 The meaning of this paper applies to the Chinese National Standard (CNS) A4 (210 X 297 mm) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 A7 5 5 46pifd2.doc / 0O 8 B7 5. Description of the invention (β) is set to 2.5. The moving speed of the heating source 122 is set to i2mm / min. Because the distance between the heating source 112 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) Let the distance between the heating source 122 and the diameter measuring device 124 be 60 mm. The chlorine gas flow rate 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 10111111 / min. Because the distance between the heating source 122 and the diameter measuring device 124 is too far, the variation rate of the diameter of the glass rod 106 after the extension process is 2.5%. 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 chlorine gas flow rate 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 L0, 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 the 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 122 and the diameter measuring device 124 was set to 15 mm. This paper is based on the Chinese national standard (CNSM4 specification (210x 297)) --------------------- 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 548248 A7 ^ — ^^ 55 46pifd2 .doc / 008 uj i NI Instructions) The nitrogen flow rate is 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. FIG. 30 shows a structural diagram of the second extension device 111 of the glass rod, 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. 25. The glass rod second extension device 111 has a force measuring device 282 for measuring the tension supplied to the glass rod 106 on 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) of Fig. 26. 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 I22 may also be a certain speed. The amount of gas supplied to the heating source 122 may be quantitative. Next, the movement speed of the tail end support frame 116 is controlled so that the tension of the glass rod 106 measured by the tension measurement device 282 is generally in a stable state. --Order --------- line (Please read the precautions on the back before filling this page) Applicable to China National Standard (CNS) A4 (210 x 297 mm) Employees ’Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs Printing 548248 A7 5 5 46pifd2 .doc / 00 8 B7 V. Description of the invention (LL.) The average tension under 値 is within 80% to 110% (S136). This steady state will be explained below. The movement speed of the tail end support frame Π6 is initially set based on the diameters of a plurality of positions of the glass rod 106 along the axis direction, and reset according to the tension of the glass rod 106. The glass rod 106 will be extended by the above-mentioned tension load 'until the heat source of the mouthpiece moves approximately 50mm to 150mm (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 accomplished by controlling the tail end 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 the desired diameter and length, the extension of the glass rod 106 (S144) is completed. The speed in the steady state is the material balance before the extension and the speed after the balance 1 is extended. Here, the initial diameter of the glass rod 106 is represented by D! Before the extension, the target diameter obtained is represented by D2, the moving speed of the heating source 122 is represented by V !, and the extension speed of the glass rod 106 is represented by V2. . For example, suppose that the extension occurs only in the heated area, so that the heated area and extension are very small. When the following equation is valid, 'V2 corresponds to the speed in a steady state. D, 2Vi = D22 (Vi + V2) Therefore, you can set v2 by adjusting the moving speed of Vi and the tail end support frame 116 according to 0 and D2. ◦The tension of the glass rod 106 under steady state is Speed in steady state when the tail end support Π6 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). ----------- -41 ^ -------- Order --------- line (please read the precautions on the back before filling this page) Printed by the Employee Consumption Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 548248 A7 5 5 46pifd2 .doc / 0 08 B7 V. I state that the tension of (ο, in general, ranges from 80% to 110% in average in a stable state. Figure 33 shows the extension process according to Figure 31 (S154) First, as shown in Figures 33 (1) and (2), after the glass rod 106 is preheated, the heating source 122 and the tail end support frame 116 begin to move J to start Extension of the glass rod 106. Since the tension of the glass rod 106 is controlled to be 110% or less than the steady state tension, excessive tension will not be supplied to the glass rod 106. Due to the rapid extension, there will be no neck The part occurs 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 glass The extension speed of the glass rod 106 will be balanced. Therefore, the diameter change of the glass rod 106 can be prevented. If the movement speed of the tail support 116 is continuously controlled according to the tension, the diameter change may occur. The glass rod 106 The tension will change with a small change in the amount of heat provided by the heating source 122. The moving speed of the tail end support 116 then changes 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 the extension of the upper heating source 122 to move a predetermined distance, the change in the diameter of the glass rod 106 caused by the delicate tension changes can be prevented by changing the moving speed of the tail end support frame 116 to a steady state speed. Until the heating source 122 moves 5Gmm 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 106 will not be balanced. As a result, before the heating source 122 moves 50mm 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.张力 The tension of the separation rod 106 should therefore be controlled at approximately 110% or less, until the heating source 122 moves approximately 50 mm. It is desired that the Chinese National Standard (CNS) A4 be used in addition to 45 paper standards. Specifications (210 X 297 public love) -------------------- Order --------- line (Please read the precautions on the back before filling in this Page) 548248 Factory A / 5 546pifd2.doc / O08 B7 V. Description of the Invention (Lat) Before the heat source 122 moves more than 150mm in gravity, change the moving speed of the tail support 116 to a steady state speed. (Please read the precautions on the back before filling this page) (Example) The glass rod 106 will be extended by 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 was 30 rpm. A hydrogen-oxygen burner is used as the heating source 122. The heat source 122 is provided to Liqi: oxygen and hydrogen are 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 stable state is about 100 kgf / cm2, and the movement of the tail end support frame 116 in the stable state is 8.6 mm / min. . The movement speed of the tail end support 116 is controlled so that the tension does not exceed 110 kgf / cm2 until the heating source 122 moves 100 mm from the extension start point. After the heating source 122 moves 100 mm, the glass rod 106 is extended by the moving speed of the control arm [J tail end support 116 to 8.6 mm / min, which is the speed in the steady state. Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Figure 34 shows the change in the tension of the glass rod 106 during the early extension 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 10 in 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 is sized according to the Chinese National Standard (CNS) A4 (210 X 297 public love) 548248 5 546pifd2.doc / 008 A7 B7 Ministry of Economic Affairs Printed by the Intellectual Property Bureau employee consumer cooperatives. The vertical axis represents the distance from the glass rod 106 along the radiation direction, and the horizontal axis represents the longitudinal distance along 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 is extended at a steady state speed by using 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 conditions of the moving speed and the amount of gas supplied to the heating source 122 are the same as in the above-mentioned example. From the beginning of the extension, the glass rod 106 is extended by controlling the gravity speed of the tail 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. During the early extension phase, the tension of the glass rod 106 was increased to 300 kgf / cm2, which was 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 mm2 compared to when it was initially extended. Since 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. The paper size applies the Chinese National Standard (CNS) A4 (210 X 297 mm) ---------- --0 -------- Order --------- line · (Please read the notes on the back before filling this page), 548248 Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs A7 __5546pifd2 .doc / OQ8__B7 ___ 5. Explanation of the invention (flow chart. First, the position of the glass rod 106 pulled out by the tail end is detected (S169). Next, the prescribed area of the glass rod 106 is pre-heated by the flame of the heating source 122 (S170) Until the specified area is almost softened. Then, the predetermined area of the glass rod 106 is heated by the heating source 122 and the moving end support 116 to extend the glass rod 106 so that the diameter of the specified area is reduced (S172). 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 the flame second (S174). The concentration of this flame is less than the concentration of the pre-heated flame (S170). ). The specified area of the glass rod 106 is further extended through the moving end support 116 so that The diameter of the prescribed area is reduced (S176). Then, the prescribed area of the glass rod 106 will be melted by the flame. Once again, the concentration of this flame is less than that of the preheated flame (S170). Figure 38 shows the cutout The schematic diagram of 284 is provided as a mark on the connection between the glass rod 106 and the virtual rod 108. This allows detection during the tail-out position detection process (S169) shown in FIG. 37. The position where the tail is pulled out is measured. A marker is provided on the connection between the glass rod 106 and the virtual rod 108. The device for recognizing the marker is installed on the second extension device 111 of the glass rod to detect the position of the marker. The starting position of the trailing end drawing process is set according to the detected mark position. The extension process of the glass rod 106 is completed in setting the trailing end drawing start position, and the trailing end of the glass rod 106 starts to be pulled out at the same time. Process. When the recognition mark device is a diameter measurement device, the method shown in Figure 38 will be used. Figure 39 does not show a schematic diagram of fluorescent paint 287, which Is used between glass On the connection between the pole 106 and the virtual pole 108, the Chinese National Standard (CNS) A4 specification (210 X 297 public love) is applied at 48 papers & degrees ---------------- ---- Order --------- line (please read the notes on the back before filling this page) A7 548248 __5 546pifd2.doc / 0Q8_B7 ___ V. Description of the invention) As another example of the mark. When the device for cognitive marker is an image processing device, the method shown in Fig. 39 is used. FIG. 40 is a schematic diagram of the second extension device 111 of the glass rod for detecting the [] cutout 284 during the position detection process (S169) at the tail end. First, the virtual rod 108 is misconnected to both ends of the glass rod 106. A glass rod 106 having a virtual rod 108 on both ends is fixed to a fixed clip 118 and a movable clip 1 19, not shown in the figure. A cutout 284 with a depth of 3 mm is provided to surround this inscription position. The lit connection 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 measuring device 124 measures the diameter of the glass rod 106. When the diameter measuring device 124 measures the position of the cutout 284 by detecting a 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 starting position of the tail end pull-out is slightly toward the middle of the glass rod 106 connected between the glass rod 106 and the virtual rod 108. Furthermore, there is no air bubble or air bubble having a diameter of 0.3 mm or more in the open position where the tail end is pulled out. Next, the process moves from extended to tail-end pull-out process. When the mark is a mark 287, a fluorescent paint is applied to the connection between the glass rod 106 and the virtual rod 108. The camera of the image processing device can detect the fluorescent paint installed on the position of the diameter measuring device (1 device 124), and the diameter measuring device 124 is installed on the moving bracket 120. During the extension period of the glass rod 106 This camera will process the pattern of the glass rod 106. If the camera detects the fluorescent paint, the second extension device of the glass rod 111 starts the tail end drawing process. The starting position of the tail end drawing is slightly toward the glass rod 106 and the virtual The middle direction of the glass rod 106 connected between the rods 108. In addition, there will be no bubbles or bubbles with a diameter of 0.3mm or more at the position where the tail end is pulled out. Next, the process uses the Chinese National Standard (CNS) ) A4 specification (210 X 297 issued) --------------- I ---- Order · -------- (Please read the precautions on the back before filling (This page) Printed A7 by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 V. Description of Invention (U /]) Extend the process to the end of the drawing process. 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 process with the tail end pulled out (S172), the heating source 122 heats a prescribed area of the glass rod 106, and the tail support base 116 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 122 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 at a concentration lower than that of the preheated 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 Likou heat source 122 heats the glass rod 106 with a 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 pull-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. The amount of gas, the moving distance of the heating source 122, and the 50 of the tail support platform 116 -------------------- Order --------- line (please first Read the notes on the back and fill in this page.) This paper size applies to China National Standard (CNS) A4 (210 X 297). Printed by the Intellectual Property Bureau Employee Consumer Cooperative of the Ministry of Economic Affairs 548248 A7 5546pifd2.doc / 008 B7 V. Invention Explanation (You) The movement 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 111 of the glass rod then resets the amount of gas, the moving 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 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. The moving speed of the tail support 116 is 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 (0) (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. During 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 122 is set to 15 mm. The amount of hydrogen (H2) used to heat the source 122 was set to 130 cx / 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 This paper is fully applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 public love) ------------ -Aw ---- I --- Order · -----------. ^ Wi (Please read the notes on the back before filling out this page) Printed by 548248 Factory A / 5 546pifd2.doc / 0O8 B7 5. Description of the invention (M) is set to 50CC / min. According to the above setting conditions, the heating source 122 heated the glass rod 1 06 0 during the second extension process for pulling out the tail end (S176), which took 180 seconds, and the moving distance of the heating source 122 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), it was performed for 30 seconds. The heating and the source 122 will not move from the position during the second extension process with the tail end pulled out, so it moves. Distance 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 sound R) 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 condition shown in FIG. 42, the glass rod 106 having a diameter of 60 mm is pulled out by the second end of the glass rod second extension device 111. The shape of the preform in the area pulled out by the tail end is formed into a conical shape. The length of this area is 61 mm and 60 mm in diameter, respectively. At the end of 5 /, the time required to pull out the temple is 12 points. FIG. 43 shows 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 116. The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling in this Page) .0 --II I--Order · ------- * 5 ^ —Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 A7 $ 5 46pifd2.doc / 00 8 B7 V. Description of the invention ( π) speed, and the moving speed of the tail support 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 length and diameter change and the extension speed setting of the glass rod 106 along the axis direction in the second heating condition (S157), the moving distance of the heating source 122 and the moving speed of the tail support table Π6 are set 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 table 116 according to the movement distance of the tail support table 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 尾 of the tail support platform 116, the amount of gas and moving distance of the heating source 122 and the 53 degree of movement of the tail support platform 116 are applicable to the Chinese National Standard (CNS) A4 specification ⑵0 x 297. ) --- ---------- I-— — — — — — — I — «— — — — — — I — (Please read the notes on the back before filling out this page) Intellectual Property of the Ministry of Economic Affairs Printed by the Bureau ’s Consumer Cooperatives 548248 A7 5 5 46pifd2.doc / QQ 8 B7 V. Explained by Cang Mingming) 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 movement distance of the tail support platform 116 is set to 0 mm in 300 seconds. The amount of hydrogen gas (H2) used to heat the source U2 is set to 250 cci / min. The amount of oxygen (〇2) (internal) output from the internal nozzle of the heating source 122 is set to 30 cc / min. From the external nozzle of the heating source 122 The output oxygen (〇2) (external) quantity is set to 100 cc / min. According to the above situation, Likou heat source 122 heats the glass rod 106. When the pre-heating process with the tail end is started, after 300 seconds, the process moves to Next step. In the extension process (S172) when the tail end is pulled out, when the moving distance is changed from 0mm to 30mm, the amount of hydrogen (H2) used for the heating source 122 is set to 250cc / min. From the heating source The amount of oxygen (02) (internal) output from the internal nozzle of 122 is set to 30 cc / min. The amount of oxygen (0) (external) output from the external nozzle of the heating source 122 is set to 100 cc / minute. In the above setting situation, 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 sound support base 116 extends the glass rod 106 at a moving speed of 10 mm / min. During the heating process of Ninger (S174), the tail The moving speed of the support platform 116 is set to Omm / min, so that the movement of the rear support platform 116 The distance is maintained at 30mm. The moving distance of the heating source 122 is set to 15mm. The amount of hydrogen (H2) used to heat the source 122 is set to 130cc / min. The oxygen (〇2) output from the internal nozzle of the heating source 122 (internal) The quantity is set to 15 (^ / min.) The quantity of oxygen (〇2) (outside) output from the external nozzle of the heating source I22 is set to 50 cc / min. According to the above setting condition, the heating source 122 heats the glass rod 106. In After the heating source 122 moves 15mm, the process moves to the next step. 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) -A__w- ------- Order --------- line. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 A / 5 546pifd2.doc / Q08 B7 V. No. of Instructions for Administration αι) Then, During the second extension process for pulling out the tail end (S176), when the moving distance of the tail support platform 116 is increased from 30mm to 55mm, the moving distance of the heating source 122 is increased from 15mm to 25mm. Hydrogen used to heat the source 122 (The H2 volume is set to 130cc / min. The amount of oxygen (〇2) (internal) output from the internal nozzle of the heating source 1:22 Set to 15cc / min. The amount of oxygen (〇2) (outside) output from the external nozzle of the heating source 122 is set to 50cc / min. According to the above setting conditions, the heating source 122 heats the glass rod 106. The tail support table 116 is 10mm / The moving speed is extended by the glass rod 106. Finally, in the melting process for pulling out the tail end (S178), when the moving distance of the tail support 116 is increased from 55mm to 100mm, the heating source 122 will not be extended from the second extending process for pulling out the tail end. The position of middle (S176) moves. 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 not shown in Fig. 43, the glass rod 106 with a diameter of 60mm is pulled out at the tail end. A 200W AC servo motor was used as the tail support table drive motor 275. It is used as a rotary encoder for the tail support table drive encoder 273, which can detect the number of rotations 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 meaning of the paper required for the tail-end drawing process is in accordance with the Chinese national standard (CNSM4 specification (210 X 297 mm) ------------- Aw -------- order- ------- 1 IAWI (Please read the notes on the back before filling this page) A7 B7 548248 5 5 46pifd2.doc / QQ 8 V. Description of the invention) I5 points for the temple. The dog in the region of the ongoing glass rod 106 pulled out by the tail end forms a tapered cone. The length and diameter of this area are 61mm and 60mm, respectively. (Example 2) According to the setting shown in Figure 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. Based on the moving distance of the tail support platform 116 detected by the linear encoder, the amount of gas, the movement distance of the heating source 122 and the movement 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. Table 44 does not show the structure of the heating source 122 of the second extension device 111 of the glass rod. [Addition] The bottom end of the outer tube 285 of the heat source 122 is closed. Outer tube 285 female to Yi Ranran body channel 312. It is a nitrogen channel, where chlorine is a suitable gas; I: An example of natural gas. The heating source Π2 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 2% is connected to the army 1 air passage 308 via a connecting element 302. The oxygen flow rate control unit 31 is installed between the connection element 302 and the inlet of the oxygen passage 308. 2% of the inert gas channel has a valve 300 and an inert gas flow rate control unit 298 plus a source 丨 22 has a control redundant piece for controlling the driving source 306 according to the flow rate data output from the oxygen flow rate control unit 310 . The power source 30 is connected to the valve 300. The flammable gas flow rate control unit 314 and oxygen flow rate control unit 310 control the flow of hydrogen h2 and oxygen 02 as shown in Figs. 42 and 43- ------ Order --------- line " 41 ^-(Please read the precautions on the back before filling out this page) Printed by the Employees ’Cooperative 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 548248 A7 5 546pifd2.doc / 008 B7 V. Cang Cangming explained (in) rate. A valve such as an electronic valve or a solenoid valve can be used as the valve. A 300 ° three-directional tube or a three-directional valve can be used to connect the element 302 °. FIG. 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 "depletion 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 torrs, which can be guided by dividing the inner region of the inner tube 286 by the flow rate of oxygen. If the linear velocity of the heating is 疋 1 m / s or less, the control element 304 drives the driving source 306 and opens the valve 300. Next, the nitrogen gas is an inert gas, and is clawed into the heat generating channel 308 at a linear velocity of 0.5 m / s and mixed with the gas. This paper rule ^ and applicable Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------------- Aw -------- Order ------ --- line (Please read the notes on the back before filling this page) A7 R7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ^ 248 A5 46pifd2 .doc / OO 8 i λ Description of the invention (0) At the flow rate, 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 flammable gas and oxygen is reduced so that the flame becomes small, the high-temperature region close to the internal sound [3 of the flame top sound β 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 顶 β of the heating source 122 is maintained below 400 degrees Celsius, 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 and lacks an increase in the flow rate of flammable gases and oxygen, the high temperature region of the flame 294 is no longer located on 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 2.0m / rare or more, the temperature of the flame is reduced because the combustion of hydrogen is incomplete. 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 I22 is maintained at 400 degrees Celsius or below, so metal oxides will not be attached to the glass rod 106, and may (please read the precautions on the back before filling this page) Musk I * Order ------ ---------------------- This paper size applies to China National Standard (CNS) A4 (210 X 297) (Centi) A7 548248 5 546pifd2.doc / Q08_B7 ____ V. No. Instructions (β) Manufactured high-quality glass rods 106. A glass rod 106 having an average diameter of 65 mm is extended by the second extension device 111 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 mood. The ratio of the number of the glass rods 106 having an external substance such as a metal oxide to the entire number of the processed glass rods 106 was 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 a substance such as a metal oxide to the total number of the 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 mixing nitrogen, the top temperature of Likou heat source 122 does not exceed 400 ° C. 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.

Fig. 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 both ends can be represented by the equation 1 / 3DSL. Here, L represents a length between position 0 and 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 original of the preform 107 (please read the precautions on the back before filling this page) ---- III I--Order -------- · * 5 ^ «Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5 9

A7 548248 S S 46pifd2.doc / 008 ___ B7_____ Fifth, issued a description (0) Open polymorphism affects the time taken to reach the stable state. This effect becomes larger, as the diameter of the preform 107 becomes larger. Then, it takes longer to pull out to reach a stable state. The preform 107 with the shape of the equation 1 / 3D $ L € 3D can reduce the time it takes to reach the stable state. If L < 1 / 3D, as the drip time of the tip of the preform 107 becomes longer, the time it takes for the diameter of the optical fiber and the pull-out speed to reach the specified value increases. If L > 1 / 3D, the dripping time of the tip end of the preform 107 can be reduced, but it takes a long time for the tapered shape of the preform 107 to become a drawn-out stable shape. Next, it takes longer for the fiber germs: diameter and pull-out speed to reach a predetermined threshold. Therefore, it is preferable that the tapered shape of the preform 107 is L = D. In the case where a part of the preform 107 is heated by flame to melt the preform 107, the remaining deformation is maintained at both ends of the tapered portion of the preform 107. If the remaining deformation of the tapered portion is large here, when a strong impact force is supplied to the preform 107, cracks may be generated on both ends of the preform 107. A thermal impact caused by the prefabricated part 107 and the virtual rod can also cause cracks on both ends of the preform 107. The amount of deformation at both ends of the preform 107 is preferably 40 kgf / cm2 or less. By controlling the remaining amount of deformation of the preform 107 to 40 kgf / cm2 or less, it is possible to prevent cracking on the preform 107. (Example) A preform 107 having a diameter of 30 mm is pulled out. The length L is set to 30 mm. Keep the amount of deformation of the gradually deformed part of the preform 107 at 40kgf / cm2 'so that no cracking will occur during the connection of the preform 107 with the virtual rod. When the set diameter of the optical fiber is 125 // m and the pull-out speed is 100 mm / min, the time taken for drawing to reach a stable state is 20 minutes. From the prefabricated parts (please read the notes on the back before filling this page) Cold Order --------- Line-▲ 60 paper sizes (^^ 7 ^ ¥ 7 The public loved 548248 A7 5 5 46mfd2 ^ doc / 00 8 B7 V. Name and service instructions) The time for setting the preform 107 on the pull-out device 500 to the tip of the preform 107 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 i-fibre is 125 // m and the pull-out speed is 100mm / min, the time it takes to reach the steady 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 a predetermined threshold. (Comparative Example 2) A preform 107 having a diameter of 30 mm was pulled out. The length L is set to 100 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 gm and the pull-out speed is 100 mm / min, the time taken for drawing 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 the paper will be cracked during the connection between the prefabricated part 107 and the virtual rod. Applicable to China National Standard (CNS) A4 (210 X 297 public love) (Please read the precautions on the back before filling this page) Economy Ministry of Intellectual Property Bureau, Employee Consumer Cooperatives, India --------- line IAW --------------- A7 B7 548248

^ S 46pjfd2.doc / 00R 5. Explanation of the invention (q), so the prefabricated part 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 as shown in Fig. 48 forms a melting portion 332 at one end thereof through a flame, and a mechanically-cut cutting surface 334 at the other end. 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 (a). : When the preform 107 having the tapered portion 336 is pulled out as shown in FIG. 48 (b), because the diameter of the melting portion 332 is small, it takes a short time to drip the tip of the preform 107, and The number of pieces 107 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 is 1 when the corpse is called. 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 (Please read the precautions on the back before filling this page) 0

Order --------- Line U Printed by the Intellectual Property Bureau Employee Consumer Cooperatives of the Ministry of Economic Affairs' paper is applicable to the Chinese National Standard (CNS) A4 specification (21〇 × 297 mm) Printed 548248 A7 _5 546pifd2.doc / QQ8 B7 V. Ordering instructions) 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 female mouth portion 338 is about 1 to 5 times this diameter, the loss of the preform can be limited to a small amount. Fig. 49 is a diagram showing the damage of the preform 107 before the surface treatment of the eyebrow 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 is etched by hydrofluoric acid as a surface treatment. This chemically cuts the metal cladding of the preform 107 so that the preform 107 has a central portion thickness of a predetermined proportion of the metal cladding. 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 are cracks or concaves on the surface of the preform 107, the places with cracks or concaves are 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 an optical fiber, this hydrogen fluoride concave surface is the cause of the fiber splitting. The honing process is performed before the treatment of hydrofluoric acid etching to remove the cracks and concave surfaces on the preform 107, and a preform 107 having no concave surface of hydrogen fluoride on its surface can be obtained. In this method, the preform 107 is flame-milled 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 engraving the preform 107 with hydrofluoric acid can prevent 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 the paper & degree applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------- -------------- ^ -------- IAWI (Please read the notes on the back before filling this page) A7 B7 548248

Hoc / OOR V. Description of the invention α 丨) One without cracks' smooth surface 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 the vaporized gas concaves on the preform 107, which is a count example and a comparison example by visual inspection. 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 supporting 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 pitch 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 through a pretreatment process 1 and a pretreatment process 2. Next, each preform 107a was honed with a burner flame, in which the burner was supplied with 250 ml / min of hydrogen and H5mi / min of oxygen. Each flame-honed preform 107a was treated with hydrofluoric acid etching at room temperature. The thickness of the material etched from the outer diameter of the preform 107 is one of four steps of 0.2mm, 1.2mm, 2.2mm, and 3.2mm. The thickness of each four etching steps is engraved into 10 pieces of prefabricated parts 107a via uranium hydrofluoride. 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, we can obtain the preform 10 ”--------------------- Order- -------- Line (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

(210x 297 mm) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 A7 ^ ήηΓ / nOR_ B7 V. Description of the invention (π) Uneven sentence. The marked point X is occupied by the ground damaged by contacting the preform 107b. The marking point 0 is a point away from the marking point X 10 mm, and it is not damaged by contacting the pre-sheet part 107b. 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. The number of concave surfaces of hydrogen fluoride was evaluated by visual inspection, and the uneven surface was measured by the same method as the example. As shown in FIGS. 52 and 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 comparative example not being flame honed. 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 preform 107a is flame-honed to reduce the number of hydrogen fluoride concave surfaces in the preform 107a and the uneven surface of the preform 107. Fig. 53 shows another shape of the surface-treated preform 107. The preform 107 has a handle 340. The handle 340 is made of silica glass, which is mounted on the surface as shown in Figure 48 (c) after being spliced or mechanically processed. This paper is also compatible with the Chinese National Standard (CNS) A4 (210 X 297). Mm) --------------------- Order --------- line (Please read the notes on the back before filling this page) Ministry of Economy Printed by the Intellectual Property Bureau's Consumer Cooperatives 548248 A7 ^ SH〇 / QQ8 ____ B7 V. Description of Invention (u) on the cutting surface 334 of the prefabricated part 107. 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 shows a schematic diagram of an ultrasonic washing device 404 for washing the 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 solution 398 contains 10% hydrofluoric acid and 3% 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. Soluble organic solvents are exemplified: 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 of the top of the heating source 122 will increase to a high and overflow between 400 ° C and 700 ° 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. This paper size applies to Chinese national standards (CNSM4 size (210x297 mm) (Please read the precautions on the back before filling this page) #

Order --------- Line U Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 548248 A7 S_S priced ηΓ / OOR_B? Five, Ming Wu Ming statement (w) Metal oxide dust particles or external factors such as additional The glass dust particles in the heating source 122 can be removed during the heating process of the glass rod 106. These dust particles can be added to the surface of the glass rod 106, so the surface layer of the glass rod 106 needs to be honed. Advocate that 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 by ultrasonic vibration of 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 tops of the outer tube 285 and inner tube 286, and the paper size of the outer tube 285 and inner tube applies the Chinese national standard (CNSM4 specification (210 X 297 mm)) (Please read the precautions on the back before filling this page) · ____ 暴 · eJ · H ϋ 1 ϋ n I ϋ n ϋ ϋ II n ϋ ϋ ϋ ϋ n 548248 A7 B7

Hnr / ΠΠ Ri, invention description (u) tube 286 will not find metal oxides and external factors 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 of the number of glass rods 106 having an external factor contamination to the total number of the glass rods 106 that 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 washing 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 to heat the preform 107; and a movable support frame 344 to supply the preform 107 to the heating Device 3 is suppressed; a diameter measuring device 352 is used to measure the diameter of the optical fiber 350 drawn from the preform 107; a first coating device 354 is used to perform the first * coating process of the optical fiber 350; a first A correction device 356 is used to correct the first coated optical fiber through an ultraviolet light; a second coating device is used to apply the optical fiber 350 for a second time; a second correction device 360 is used to correct the first optical fiber through an ultraviolet light. Two coated optical fibers; 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, the paper & degree applies to the Chinese national standard (CNSM4 specification C 297) ----------------- ----- 丨 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 Economy 68 548248 A7 ς Hnr / OOX_ Β7 V. Description of the invention ((Λ) 350, first, the virtual rod 342 is connected to the preform 107 h supported by the clip 346 of the movable support frame 344. The preform 1107 The beginning 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, the tip of the dripping preform 107 is grasped and passed through the diameter measurement The device 352 is pulled out. When the diameter of the optical fiber 3 50 reaches the desired diameter, the optical fiber 350 passes through the first coating device 354 and is first coated with resin. This first coated optical fiber 350 then passes through the first correction. The device 356 is rectified. The optical fiber 350 is then second coated via a second coating device 358 and via a second The correcting device 356 is corrected. When the pull-out diameter and speed of the optical fiber 350 reach a predetermined threshold, the optical fiber 3 50 will be wound onto a spool through the traction machine 362, which is not shown in the figure. The first drawing device 900 of the glass base material and the second extension device 111 of the glass rod can produce a high-quality and small-variable preform 107. Therefore, the first drawing device 900 of the glass base material and the second extension of the glass rod The 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 optical fibers. Although the present invention has been disclosed in the preferred embodiment as above, it is not intended to limit the present invention. Anyone who is familiar with this skill can make various modifications and retouching without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the attached patent application. Paper ruler> ^ _ Applicable to China National Standard (CNS) A4 specification (21〇X 297 public love) ------------- Aw -------- Order --- ------ Line (Please read the notes on the back before filling this page)

Claims (1)

548248 5 546pifld2.doc / 0 12-Amendment for the scope of patent application No. 901262004 'A only R8 C8 D8 " Members are kindly requested to indicate whether the original \ > month {日 々 ^ 之 t original is available-whether the more substantial content is allowed to be amended. Patent application scope L --- 1 1. A method for manufacturing an optical fiber, comprising: setting a heating condition to heat a glass rod, and setting the one extension speed, wherein the glass rod is a mother body of the optical fiber, $ And the setting of the heating condition and the extension speed is based on a tension generated on the glass rod during the glass length process; the glass rod is added according to the set heating condition and the extension speed to generate a preform During the extension process, a heating source using one of the glass rods is moved longitudinally along one of the glass rods, and elapsed B. The extension speed controlled by the heating and extension process is such that the movement should be performed before the prescribed distance. The tension is 110% or less of the average movement of the heating source / 'the tension; and the extension is printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs to pull out the preform by additionally heating the preform Line up to create an optical fiber. 2. The manufacturing method of the optical fiber according to item 1 of the scope of the patent application, g The tension controlled by the heating and elongation process is such that the tension before the predetermined distance is the predetermined distance for the heating source to move the specified distance The average tension is between 80% and 110%. X 3. The method for manufacturing an optical fiber as described in item 1 of the scope of patent application, wherein the predetermined distance ψ is generally between 50 mm and 150 mm. 4. The method for manufacturing an optical fiber according to item 1 of the scope of patent application, wherein when the heating source moves the prescribed distance, the heating and extension process controls the extension speed to a certain speed. 5. The method for manufacturing an optical fiber according to item 1 of the scope of the patent application, wherein the setting situation is based on the tension, setting a moving speed to support a clip of the glass rod as the extension speed. _ 似 钿 ----------------- 1 --- Order --------- line · (Please read the precautions on the back before filling in this page) 70 This paper size is in accordance with Chinese National Standard (CNS) A4 (210x297 mm) 548248 Printed by the Beihui Consumer Cooperative of the temporary Hui Property Bureau of the Ministry of Economic Affairs 5546Pifld2.doc / 012 Hop! C8 ^ _08——. I. Scope of Patent Application A method for manufacturing a preform, the S product is a parent material of an optical fiber, the method includes: setting a heating condition for heating a glass rod, and setting an extension speed of the glass rod, wherein the glass rod Is a parent material of the optical fiber, and the heating condition and the extension speed are set according to a tension generated on the glass rod during an extension of the glass rod; and according to the heating condition and the extension speed set Heating and extending the glass rod to produce a preform, during the extending process, a heating source for heating the glass rod moves longitudinally along one of the glass rods, and the heating and extending process controls the The extension speed makes the heating source move The distance that the tension before the heating source moves the average tension of the predetermined distance after the Zhi 110% or 110% or less. 7. The method for manufacturing a preform as described in item 6 of the scope of the patent application, wherein the tension controlled by the heating and extending process is such that the tension before the heating source moves the prescribed distance is the regulation that the heating source moves After the distance, the average tension of this tension is between 80% and 110¾. 8. The method for manufacturing a preform as described in item 6 of the scope of patent application, wherein the prescribed distance is generally between 50 mm and 150 mm. 9. The method for manufacturing a preform as described in item 6 of the scope of patent application, wherein when the heating source moves the prescribed distance, the heating and extension process controls the extension speed to a certain speed. 10 · —A device for manufacturing a preform, the preform is a parent material of an optical fiber, the device includes: a heating source, the heating source is longitudinally moved along a glass rod during the extension process, and is used for The glass rod is heated, the glass rod is the prefabricated part. The paper size is applicable to China National Standard (CNS) A4 specification (210x 297 mm) i ------ ^ -------- (Please read the back first Please pay attention to this page, please fill in this page) 548248 5546pifld2.doc / 012 A8 C8 D8 VI. One of the parent material scope of patent application; an extension unit to extend the glass rod; a measuring device to measure the glass rod A tension generated on the glass rod during an extension process; and a control unit for controlling a heating condition and a heating condition of a heating source based on the tension generated on the glass rod measured by the measuring device One of the extension units has an extension speed, and the extension speed controlled by the control unit is such that the tension before the heating source moves a predetermined distance is 110% of the average tension of the tension after the heating source moves the predetermined distance or 110% Down. 0 * Π. The device for manufacturing prefabricated parts as described in item 10 of the scope of patent application, wherein the tension controlled by the control unit is such that the tension before the heating source moves by the prescribed distance is the heating source movement After the prescribed distance, the average tension of the tension is between 80% and 110%. 12. The device for manufacturing a prefabricated part as described in item 10 of the scope of patent application, wherein the prescribed distance is generally between 50mm and 150mm 13. The device for manufacturing prefabricated parts as described in item 10 of the scope of patent application, wherein when the heating source moves the prescribed distance, the control unit controls the extension speed to a certain level. -------- ---- l · »» — ^ — 1— (Please read the notes on the back before filling out this page) Printed by the Industrial and Commercial Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper is sized to the Chinese National Standard (CNS) A4 (2KM 297 mm)