WO2023032556A1 - ガラスロッド製造装置及びガラスロッド製造方法 - Google Patents
ガラスロッド製造装置及びガラスロッド製造方法 Download PDFInfo
- Publication number
- WO2023032556A1 WO2023032556A1 PCT/JP2022/029543 JP2022029543W WO2023032556A1 WO 2023032556 A1 WO2023032556 A1 WO 2023032556A1 JP 2022029543 W JP2022029543 W JP 2022029543W WO 2023032556 A1 WO2023032556 A1 WO 2023032556A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rod
- glass rod
- axis
- starting rod
- contact
- Prior art date
Links
- 239000011521 glass Substances 0.000 title claims abstract description 98
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 65
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 7
- 229920006015 heat resistant resin Polymers 0.000 claims description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/055—Re-forming tubes or rods by rolling
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/043—Heating devices specially adapted for re-forming tubes or rods in general, e.g. burners
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/045—Tools or apparatus specially adapted for re-forming tubes or rods in general, e.g. glass lathes, chucks
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
- C03B37/0126—Means for supporting, rotating, translating the rod, tube or preform
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Definitions
- the present disclosure relates to a glass rod manufacturing apparatus and a glass rod manufacturing method.
- This application claims priority based on Japanese Application No. 2021-140168 filed on August 30, 2021, and incorporates all the descriptions described in the Japanese application.
- a glass lathe is used to process a glass rod made of silica glass (for example, Patent Document 1).
- a glass rod is held and heated with a heat source such as a flame to perform processing such as connection with other glass rods, stretching, or glass synthesis.
- the heat applied to the glass rod can be made uniform by rotating the glass rod.
- the glass rod is typically a glass body having a substantially cylindrical outer shape, but the cross-sectional shape is not limited to a circle, and may be polygonal, elliptical, star-shaped, or D-shaped. Those whose diameter and shape change are also included.
- it also includes a cylinder with one or more openings in its cross section.
- it also includes those in which a plurality of glass rods are connected in the longitudinal direction.
- a glass rod manufacturing apparatus of the present disclosure is a glass rod manufacturing apparatus that manufactures a glass rod centered from a starting rod having at least one bent portion, the holding portion holding one end of the starting rod, and at least one A heating portion that heats one of the bends and a starting rod that rotates about the axis so that it crosses the axis with respect to the whirling portion between one bend and the other end of the starting rod. and a centering jig that applies a force in the first direction, the centering jig including a contact portion that contacts the portion, and the contact portion that is moved in the first direction according to the swing width of the portion. and a slide portion that slides the contact portion in a second direction that intersects the axis and the first direction according to the swing width of the portion.
- a glass rod manufacturing method of the present disclosure is a glass rod manufacturing method for manufacturing a glass rod centered from a starting rod having at least one bend, comprising: holding one end of the starting rod; Heating a bend in one of the sections and rotating the starting rod about the axis results in a first axial crossing for the whirling portion between the one bend and the other end of the starting rod. applying a directional force and centering the starting rod, wherein the centering comprises elastically moving the abutment against the portion in a first direction in response to a whirling swing of the portion; and is slid in a second direction intersecting the axis and the first direction according to the whirling width of the part.
- FIG. 1 is a side view illustrating a glass rod manufacturing apparatus according to an embodiment together with a glass rod to be processed.
- FIG. 2 is a front view illustrating the glass rod manufacturing apparatus according to the embodiment together with the glass rod to be processed.
- FIG. 3 is a diagram for explaining whirling of the starting rod.
- FIG. 4 is a flow chart showing the glass rod manufacturing method according to the embodiment.
- FIG. 5 is a side view of a glass rod manufacturing apparatus according to a modification.
- An object of the present disclosure is to provide a glass rod manufacturing apparatus and a glass rod manufacturing method that can easily perform centering.
- a glass rod manufacturing apparatus is a glass rod manufacturing apparatus that manufactures a glass rod centered from a starting rod having at least one bent portion, and includes a holding portion that holds one end of the starting rod; , the heating portion for heating one of the at least one bends, and the wobbling portion between the one bend and the other end of the starting rod as the starting rod rotates about the axis a centering jig that applies a force in a first direction that intersects with the axis, the centering jig having a contact portion that contacts the portion; in a first direction, and a sliding portion that slides the contact portion in a second direction that intersects the axis and the first direction according to the swing width of the whirling of the portion. .
- the abutting portion that abuts on the portion whirling due to the rotation of the starting rod is elastically displaced in the first direction by the elastic displacement portion according to the whirling width of the whirling portion, and It slides in the second direction by the sliding part. Therefore, the abutting portion can automatically continue to apply the force in the first direction to the abutting portion of the starting rod. This facilitates centering.
- the contact portion may include a pair of contact members arranged side by side in the second direction.
- the pair of contact members can support the starting rod at two points.
- the pair of contact members may be rollers each having a central axis along the axis and rotatable around the central axis. In this case, since the pair of abutment members rotate in accordance with the rotation of the starting rod, it is possible to prevent the rotation of the starting rod from being hindered.
- the pair of contact members may face each other in the second direction at a distance shorter than the diameter of the starting rod. In this case, the pair of contact members can reliably support the starting rod at two points.
- the contact portion may have a V-groove.
- the starting rod can be supported at two points by the pair of surfaces of the V groove.
- the contact portion may contain heat-resistant resin. In this case, since the contact portion has heat resistance, the contact portion can be brought into contact with the heated starting rod. Also, since the contact portion is made of resin, the starting rod is prevented from being damaged.
- the centering jig may further include a position adjusting portion that adjusts the position of the contact portion in the first direction.
- the contact portion can be reliably brought into contact with the starting rod.
- the contact portion may be fixed to the slide portion, and the elastic displacement portion may elastically displace the slide portion together with the contact portion in the first direction. In this case, it is possible to easily realize a configuration in which the contact portion is elastically displaced in the first direction and slides in the second direction.
- a glass rod manufacturing method is a glass rod manufacturing method for manufacturing a glass rod centered from a starting rod having at least one bend, comprising: holding one end of the starting rod; Heating one of the at least one flexures and rotating the starting rod about the axis causes axial heating to the wobble portion between the one flexure and the other end of the starting rod. applying forces in a first cross direction to center the starting rod, wherein the centering comprises moving the abutment against the part to a third position according to the whirling amplitude of the part It is elastically displaced in one direction and slid in a second direction intersecting the axis and the first direction according to the whirling width of the part.
- the abutting portion that abuts on the portion whirling due to the rotation of the starting rod is elastically displaced in the first direction by the elastic displacement portion according to the swing width of whirling of the portion, and It slides in the second direction by the sliding part. Therefore, the abutting portion can automatically continue to apply the force in the first direction to the abutting portion of the starting rod. This facilitates centering.
- the centering may be performed on at least one of the at least one bent portions in order from one bent portion on the one end side. In this case, centering can be performed efficiently.
- FIG. 1 is a side view illustrating a glass rod manufacturing apparatus according to an embodiment together with a glass rod to be processed.
- FIG. 2 is a front view illustrating the glass rod manufacturing apparatus according to the embodiment together with the glass rod to be processed.
- a glass rod manufacturing apparatus 1 shown in FIGS. 1 and 2 is a glass lathe that uses a glass rod having at least one bent portion as a starting rod 10 and manufactures a glass rod centered from the starting rod 10 .
- the starting rod 10 and the centered glass rod are rod-shaped bodies and contain silica glass, for example.
- the starting rod 10 and the glass rod can be solid or hollow.
- the starting rod 10 may have one or more openings (through holes) extending along the central axis 10a of the starting rod 10 .
- the glass rod may have one or more openings (through holes) extending along the central axis of the glass rod.
- the starting rod 10 has one longitudinal end 10b and the other longitudinal end 10c.
- the starting rod 10 has a main body 11 and a dummy rod 12.
- the main body 11 is a portion that becomes a glass rod to be subjected to shape change and glass deposition by applying a heating section of the manufacturing apparatus, and has at least one bent portion.
- the main body 11 is, for example, a long glass rod formed by connecting a plurality of glass rods.
- the bent portion of the main body 11 is, for example, a connecting portion between glass rods.
- the dummy rod 12 is a rod used mainly for adjusting the position of the main body 11 with respect to the heating section of the manufacturing apparatus.
- the dummy rod 12 is made of the same material as that of the main body 11, for example, and is a glass rod having a diameter smaller than that of the starting rod 10 and a short length. In this embodiment, dummy rod 12 does not have a bent portion.
- the main body 11 and the dummy rod 12 are connected to each other at their ends.
- the dummy rod 12 is attached to the main body 11 by welding, for example.
- Dummy rod 12 includes one end 10b.
- Body 11 includes the other end 10c.
- the starting rod 10 may consist of only the main body 11 without the dummy rod 12 .
- body 11 includes one end 10b and the other end 10c with a bend therebetween.
- the connecting portion 10d between the main body 11 and the dummy rod 12 is a bent portion of the starting rod 10.
- the main body 11 has at least one bent portion other than the connecting portion 10d.
- the connecting portion 10d is a bend
- the starting rod 10 has at least two bends.
- the glass rod manufacturing apparatus 1 includes a centering jig 2, a holding section 3, and a heating section 4.
- the holding portion 3 is configured to hold (or support) the one end 10b of the starting rod 10 .
- the holding part 3 is, for example, a chuck that holds the one end 10b.
- the holding part 3 holds the starting rod 10 in a cantilever manner. Since the one end 10b is fixed by the holding portion 3, it becomes a fixed end.
- the other end 10c (tip) is a free end.
- the holding part 3 holds the starting rod 10 and is driven to rotate about a predetermined axis A by a drive mechanism (not shown).
- Axis A is the rotation axis of holding portion 3 .
- the holding part 3 holds the one end 10b so that the central axis 10a is aligned with the axis A at least at the one end 10b.
- the holding portion 3 holds the one end 10b so that at least the central axis of the dummy rod 12 is aligned with the axis A. As shown in FIG.
- the central axis 10a of the starting rod 10 is shown aligned with the axis A, but since the starting rod 10 has a bent portion, the central axis 10a is actually on the side of the other end 10c of the bent portion. has a portion that does not coincide with the axis A.
- the connecting portion 10d is a bent portion (when the central axis of the dummy rod 12 is inclined with respect to the central axis of the main body 11)
- the central axis 10a is aligned with the axis A on the other end 10c side from the connecting portion 10d. no longer do.
- the portion of the starting rod 10 where the central axis 10a does not match the axis A swings around the axis A.
- FIG. 1 the portion of the starting rod 10 where the central axis 10a does not match the axis A swings around the axis A.
- the heating unit 4 is configured to be able to heat one bent portion 10e to be centered among at least one bent portion of the starting rod 10.
- the heating unit 4 is, for example, a burner that burns hydrogen gas.
- the heating unit 4 is provided movably along the axis A, for example, and can heat a predetermined portion of the starting rod 10 in the longitudinal direction. Since the bending of the bending portion 10e is slight, it is shown in a straight line in FIG.
- the centering jig 2 exerts a force in a first direction D1 intersecting the axis A on the whirling predetermined portion 10f between the bent portion 10e and the other end 10c.
- the predetermined portion 10f is, for example, a bent portion located closer to the other end 10c than the bent portion 10e or the other end 10c.
- the first direction D1 is the direction of gravity and is orthogonal to the axis A.
- the first direction D1 is not necessarily the direction of gravity, and may be, for example, the horizontal direction.
- the centering jig 2 has a contact portion 5 , a slide portion 6 , an elastic displacement portion 7 and a position adjustment portion 8 .
- the abutting portion 5 has a pair of abutting members 13 that abut on the predetermined portion 10f of the starting rod 10 that swings around due to rotation.
- the pair of contact members 13 are arranged side by side in a second direction D2 intersecting the axis A and the first direction D1.
- the second direction D2 is orthogonal to the axis A and the first direction D1.
- the pair of contact members 13 face each other in the second direction D2 at a distance shorter than the diameter of the starting rod 10 .
- the pair of contact members 13 are rollers each having a central axis 13a along the axis A and rotatable around the central axis 13a.
- a pair of abutment members 13 rotate according to the rotation of the starting rod 10 .
- the contact member 13 has a circular shape when viewed from the direction along the central axis 13a.
- the contact member 13 is, for example, a disc member or a spherical member.
- the abutment surface of the abutment member 13 has a shape in which the center bulges outward. More specifically, the abutment surface has a curved surface shape such that the closer it is to the center in the direction along the central axis 13a, the farther away it is from the central axis 13a.
- the contact surface may have a chamfered shape in which both ends in the direction along the central axis 13a are rounded. With such a non-cornered contact surface, the starting rod 10 can be supported without damaging the starting rod 10 .
- the contact portion 5 contains heat-resistant resin.
- the heat-resistant temperature of the contact portion 5 is, for example, preferably 100° C. or higher, more preferably 200° C. or higher.
- heat-resistant resins include fluororesins such as Teflon (registered trademark).
- Teflon registered trademark
- the contact member 13 is a Teflon roller.
- Such a resin material is not as hard as glass, and can reduce unevenness on the surface, making it slippery. Therefore, the starting rod 10 can be supported without damaging the starting rod 10 .
- the contact portion 5 has a support member 14 that pivotally supports the pair of contact members 13 .
- a pair of support members 14 are provided for one contact member 13 . That is, the contact portion 5 has four support members 14 .
- the pair of support members 14 are arranged on both sides of the contact member 13 in the direction along the central axis 13a.
- the support member 14 is fixed to a first slide member 15 (described later) of the slide portion 6 . Thereby, the contact portion 5 is fixed to the slide portion 6 .
- the slide portion 6 is configured to slide the contact portion 5 in the second direction D2 according to the whirling width of the predetermined portion 10f of the starting rod 10.
- the slide portion 6 has a first slide member 15 to which the contact portion 5 is fixed, and a second slide member 16 that supports the first slide member 15 so as to be slidable in the second direction D2.
- the first slide member 15 slides together with the contact portion 5 in the second direction D2 with respect to the second slide member 16, and absorbs the deflection of the starting rod 10 with respect to the contact portion 5 in the second direction D2.
- the first slide member 15 and the second slide member 16 are, for example, plate-like members arranged to face each other in the first direction D1.
- the second slide member 16 has a rail extending along the second direction D2, and the first slide member 15 has an engaging portion that engages with the rail.
- the slide mechanism of the slide portion 6 is realized by engaging the engagement portion of the first slide member 15 with the rail of the second slide member 16 .
- the slide mechanism may be realized by other known means.
- the elastic displacement portion 7 is configured to elastically displace the contact portion 5 in the first direction D1 in accordance with the swing width of the whirling of the predetermined portion 10f of the starting rod 10.
- the elastic displacement portion 7 is fixed to the slide portion 6 and elastically displaces the slide portion 6 together with the contact portion 5 in the first direction D1.
- the elastic displacement portion 7 is attached to the side of the second slide member 16 opposite to the first slide member 15 .
- the elastic displacement portion 7 is, for example, a coil spring or an air spring, and absorbs deflection of the starting rod 10 with respect to the contact portion 5 in the first direction D1.
- the position adjusting portion 8 is configured to be able to adjust the position of the contact portion 5 in the first direction D1.
- the position adjustment part 8 includes, for example, a cylinder that can be extended and contracted in the first direction D1.
- the position adjusting portion 8 is provided on the side of the elastic displacement portion 7 opposite to the slide portion 6 and supports the contact portion 5 via the elastic displacement portion 7 and the slide portion 6 .
- the position adjusting section 8 adjusts the position of the contact section 5 in the first direction D1 by operating the handle, for example.
- FIG. 3 is a diagram for explaining whirling of the starting rod.
- whirling of the predetermined portion 10f of the starting rod 10 is shown.
- the predetermined portion 10f swings about, for example, the axis A as a rotation axis.
- the amplitude L1 of the starting rod 10 in the first direction D1 is equal to the amplitude L2 of the starting rod 10 in the second direction D2, but the amplitude L1 and the amplitude L2 may differ from each other.
- the elastic displacement portion 7 is configured to be able to absorb at least the vibration of the vibration width L1 in the first direction D1.
- the elastic displacement portion 7 is configured such that the movable range of the contact portion 5 in the first direction D1 is equal to or greater than the deflection width L1.
- the slide portion 6 is configured to be able to absorb at least the vibration of the vibration width L2 in the second direction D2. That is, the slide portion 6 is configured such that the movable range of the contact portion 5 in the second direction D2 is equal to or greater than the swing width L2.
- FIG. 4 is a flow chart showing the glass rod manufacturing method according to the embodiment.
- a glass rod manufacturing method according to an embodiment is a method for manufacturing a glass rod centered from a starting rod 10 having at least one bent portion.
- a glass rod manufacturing method is performed using a glass rod manufacturing apparatus 1 .
- the glass rod manufacturing method includes steps S1 to S8, as shown in FIG.
- Step S1 is a step of holding one end 10b of the starting rod 10 by the holding portion 3.
- the starting rod 10 is held by the holding portion 3 so that the central axis 10a is aligned with the axis A at least at one end 10b.
- the starting rod 10 is attached to the holding part 3 so that at least the center axis of the dummy rod 12 is aligned with the axis A. As shown in FIG.
- Step S2 is a step of moving the heating portion 4 to the bent portion 10e (heating point) to be centered.
- the bent portion closest to the one end 10b is set as the bent portion 10e to be centered.
- the bent portion closest to the one end 10b can be easily identified as the portion where whirling is minimized when the starting rod 10 is rotated by the holding portion 3. FIG. This step may be performed while rotating the starting rod 10 .
- Step S3 is a step of moving the centering jig 2 to a predetermined portion 10f (fulcrum).
- the predetermined portion 10f is located closer to the other end 10c than the bent portion 10e to be centered, and may be a portion that swings around by rotation.
- the portion closest to the bent portion 10e to be centered is set as the predetermined portion 10f.
- the predetermined portion 10 f can be easily identified as a portion where whirling becomes maximum when the starting rod 10 is rotated by the holding portion 3 . This step may be performed, for example, while rotating the starting rod 10 .
- Step S4 is a step of adjusting the height of the contact portion 5 (the position in the first direction D1) by the position adjusting portion 8.
- the height of the contact portion 5 is adjusted so that the contact portion 5 contacts the starting rod 10 even when the starting rod 10 is touched so as to be the farthest from the centering jig.
- Step S5 is a step in which the heating unit 4 starts heating the bent portion 10e to be centered. This step is performed by igniting the burner if the heating unit 4 is a burner.
- Step S6 is a step of centering the bent portion 10e to be centered using the centering jig 2. This process is carried out while holding one end 10b of the starting rod 10 by the holding portion 3 and rotating the starting rod 10 around the axis A. As shown in FIG. Further, this step is performed while the heating unit 4 heats the bent portion 10e.
- a force in the first direction D1 is applied to the swinging predetermined portion 10f between the bent portion 10e and the other end 10c. That is, the force in the first direction D1 is applied by the contact portion 5 to the predetermined portion 10f, which is a portion closer to the other end 10c than the bent portion 10e and swings around due to the rotation.
- the contact portion 5 is displaced in the first direction D1 by the elastic displacement portion 7 according to the whirling amplitude of the predetermined portion 10f, and the sliding portion 6 is used to move the predetermined portion 10f. It is brought into contact with the predetermined portion 10f while being slid in the second direction D2 according to the width.
- the bent portion 10e is corrected and centered. It can be carried out.
- the correction of the bent portion 10e is to reduce the bending of the bent portion 10e.
- Step S7 is a step of ending the heating by the heating unit 4. This process is performed by stopping a burner, when the heating part 4 is a burner.
- Step S8 is a step of cooling the starting rod 10. This step is performed, for example, while rotating the starting rod 10 .
- Steps S2 to S8 are repeated as necessary. Steps S2 to S8 are repeated until all bends of the starting rod 10 are straightened.
- the bent portions of the starting rod 10 are sequentially centered and corrected from the one end 10b side. That is, steps S2 to S8 are performed on all of the at least one bent portion in order from the one bent portion closest to the one end 10b of the at least one bent portion.
- the contact portion 5 is moved in the first direction by the elastic displacement portion 7 according to the swing width of the predetermined portion 10f. While being elastically displaced in D1, it slides in the second direction D2 by means of the slide portion 6 . Therefore, the contact portion 5 can automatically continue to apply the force in the first direction D1 to the predetermined portion 10f. As a result, since the bent portion can be automatically centered, the centering can be easily performed. In particular, when manufacturing a long glass rod, the number of times of centering is increased and the working time is increased, so the glass rod manufacturing apparatus 1 and the glass rod manufacturing method according to the present embodiment are effective.
- the contact portion 5 includes a pair of contact members 13 arranged side by side in the second direction D2. Therefore, the pair of contact members 13 can support the starting rod 10 at two points.
- the pair of contact members 13 are rollers each having a central axis 13a along the axis A and rotatable around the central axis 13a. Since the pair of abutment members 13 rotates in accordance with the rotation of the starting rod 10, hindrance to the rotation of the starting rod 10 is suppressed.
- the pair of contact members 13 are separated from each other in the second direction D2 by a distance shorter than the diameter of the starting rod 10. Therefore, the pair of contact members 13 can reliably support the starting rod 10 at two points.
- the contact portion 5 contains heat-resistant resin. Since the contact portion 5 has heat resistance, the contact portion 5 can be brought into contact with the heated starting rod 10 . Also, since the contact portion 5 is made of a resin material, the starting rod 10 is prevented from being damaged.
- the centering jig 2 includes the position adjusting portion 8 for adjusting the position of the contact portion 5 in the first direction D1, the contact portion 5 can be brought into contact with the starting rod 10 reliably.
- the contact portion 5 is fixed to the slide portion 6, and the elastic displacement portion 7 elastically displaces the slide portion 6 together with the contact portion 5 in the first direction D1. Therefore, it is possible to easily realize a configuration in which the contact portion 5 is elastically displaced in the first direction D1 and slides in the second direction D2.
- steps S2 to S8 are performed on at least one bent portion in order from one bent portion on the one end 10b side of the at least one bent portion. Therefore, the glass rod can be efficiently centered.
- FIG. 5 is a side view of a glass rod manufacturing apparatus according to a modification.
- the glass rod manufacturing apparatus 1A according to the modification differs from the glass rod manufacturing apparatus 1 (see FIG. 1) in that the centering jig 2 has a contact portion 5A.
- the contact portion 5A has a V-groove 17, and a pair of surfaces of the V-groove 17 come into contact with the predetermined portion 10f.
- the V-groove 17 is fixed to the first slide member 15 of the slide portion 6 .
- the V-groove 17 is made of heat-resistant resin, for example.
- the pair of surfaces of the V groove 17 can support the starting rod 10 at two points.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
Description
上述のような製造工程では、ガラスロッドに曲がり(屈曲部)が存在すると、ガラスロッドを回転させた際にガラスロッドが回転軸の周りを振れ回ることが問題になる。そこで、ガラスロッドの芯出しが行われる。芯出しとは、ガラスロッドの曲がりを小さくし、ガラスロッドの振れ回りを全長または少なくとも一部の長さにわたり小さくする加工である。
本開示によれば、芯出しを容易に行うことができるガラスロッド製造装置及びガラスロッド製造方法を提供することができる。
最初に本開示の実施態様を列記して説明する。本開示の実施形態に係るガラスロッド製造装置は、少なくとも一つの屈曲部を有する出発ロッドから芯出しされたガラスロッドを製造するガラスロッド製造装置であって、出発ロッドの一端を保持する保持部と、少なくとも一つの屈曲部のうちの一つの屈曲部を加熱する加熱部と、出発ロッドが軸線周りに回転することにより、一つの屈曲部と出発ロッドの他端の間の振れ回る部分に対して軸線に交差する第一方向の力を付与する芯出し治具と、を備え、芯出し治具は、部分に当接する当接部と、部分の振れ回りの振れ幅に応じて、当接部を第一方向に弾性的に変位させる弾性変位部と、部分の振れ回りの振れ幅に応じて、当接部を軸線及び第一方向に交差する第二方向にスライドさせるスライド部と、を有する。
本開示のガラスロッド製造装置の具体例を、以下に図面を参照しつつ説明する。なお、本発明はこれらの例示に限定されるものではなく、請求の範囲によって示され、請求の範囲と均等の意味及び範囲内での全ての変更が含まれることが意図される。図面の説明において同一の要素には同一の符号を付し、重複する説明を省略する。
2…芯出し治具
3…保持部
4…加熱部
5,5A…当接部
6…スライド部
7…弾性変位部
8…位置調整部
10…出発ロッド
10a…中心軸
10b…一端
10c…他端
10d…接続部
10e…屈曲部
10f…所定部分
11…本体
12…ダミーロッド
13…当接部材
13a…中心軸
14…支持部材
15…第一スライド部材
16…第二スライド部材
17…V溝
A…軸線
D1…第一方向
D2…第二方向
L1…振れ幅
L2…振れ幅
Claims (10)
- 少なくとも一つの屈曲部を有する出発ロッドから芯出しされたガラスロッドを製造するガラスロッド製造装置であって、
前記出発ロッドの一端を保持する保持部と、
前記少なくとも一つの屈曲部のうちの一つの屈曲部を加熱する加熱部と、
前記出発ロッドが軸線周りに回転することにより、前記一つの屈曲部と前記出発ロッドの他端の間の振れ回る部分に対して前記軸線に交差する第一方向の力を付与する芯出し治具と、を備え、
前記芯出し治具は、
前記部分に当接する当接部と、
前記部分の振れ回りの振れ幅に応じて、前記当接部を前記第一方向に弾性的に変位させる弾性変位部と、
前記部分の振れ回りの振れ幅に応じて、前記当接部を前記軸線及び前記第一方向に交差する第二方向にスライドさせるスライド部と、を有する、
ガラスロッド製造装置。 - 前記当接部は、前記第二方向に並んで配置された一対の当接部材を含んでいる、
請求項1に記載のガラスロッド製造装置。 - 前記一対の当接部材は、それぞれ前記軸線に沿う中心軸を有する共に、前記中心軸周りに回転可能なローラである、
請求項2に記載のガラスロッド製造装置。 - 前記一対の当接部材は、前記出発ロッドの直径よりも短い間隔で前記第二方向において互いに対向している、
請求項2または請求項3に記載のガラスロッド製造装置。 - 前記当接部は、V溝を有している、
請求項1に記載のガラスロッド製造装置。 - 前記当接部は、耐熱樹脂を含んでいる、
請求項1から請求項5のいずれか一項に記載のガラスロッド製造装置。 - 前記芯出し治具は、前記当接部の前記第一方向における位置を調整する位置調整部を更に備える、
請求項1から請求項6のいずれか一項に記載のガラスロッド製造装置。 - 前記当接部は、前記スライド部に固定されており、
前記弾性変位部は、前記当接部ごと前記スライド部を前記第一方向に弾性的に変位させる、
請求項1から請求項7のいずれか一項に記載のガラスロッド製造装置。 - 少なくとも一つの屈曲部を有する出発ロッドから芯出しされたガラスロッドを製造するガラスロッド製造方法であって、
前記出発ロッドの一端を保持することと、
前記少なくとも一つの屈曲部のうちの一つの屈曲部を加熱することと、
前記出発ロッドが軸線周りに回転することにより、前記一つの屈曲部と前記出発ロッドの他端の間の振れ回る部分に対して前記軸線に交差する第一方向の力を付与し、前記出発ロッドの芯出しを行うこと、を含み、
前記芯出しを行うことでは、前記部分に当接する当接部を、前記部分の振れ回りの振れ幅に応じて前記第一方向に弾性的に変位させ、前記部分の振れ回りの振れ幅に応じて前記軸線及び前記第一方向に交差する第二方向にスライドさせる、
ガラスロッド製造方法。 - 前記芯出しを行うことは、前記少なくとも一つの屈曲部のうちの前記一端側の一つの屈曲部から順に前記少なくとも一つの屈曲部に対して実施される、
請求項9に記載のガラスロッド製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280050168.6A CN117693493A (zh) | 2021-08-30 | 2022-08-01 | 玻璃杆制造装置及玻璃杆制造方法 |
US18/257,139 US20240025789A1 (en) | 2021-08-30 | 2022-08-01 | Glass rod manufacturing device and glass rod manufacturing method |
JP2022575792A JP7243946B1 (ja) | 2021-08-30 | 2022-08-01 | ガラスロッド製造装置及びガラスロッド製造方法 |
JP2023031143A JP2023060872A (ja) | 2021-08-30 | 2023-03-01 | ガラスロッド製造装置及びガラスロッド製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-140168 | 2021-08-30 | ||
JP2021140168 | 2021-08-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023032556A1 true WO2023032556A1 (ja) | 2023-03-09 |
Family
ID=85411001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/029543 WO2023032556A1 (ja) | 2021-08-30 | 2022-08-01 | ガラスロッド製造装置及びガラスロッド製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240025789A1 (ja) |
JP (2) | JP7243946B1 (ja) |
CN (1) | CN117693493A (ja) |
WO (1) | WO2023032556A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62203236U (ja) * | 1986-06-18 | 1987-12-25 | ||
JPH05319845A (ja) * | 1992-05-19 | 1993-12-03 | Fujikura Ltd | 光ファイバ母材の加工方法 |
JPH06144861A (ja) * | 1992-11-05 | 1994-05-24 | Fujikura Ltd | 光ファイバ母材の加工方法 |
KR20040055177A (ko) * | 2002-12-20 | 2004-06-26 | 엘지전선 주식회사 | 광섬유 모재 제조장치 및 이를 이용한 광섬유 모재제조방법 |
JP2006213552A (ja) * | 2005-02-02 | 2006-08-17 | Sumitomo Electric Ind Ltd | ガラス母材の加工方法および加工装置 |
JP2006225179A (ja) * | 2005-02-15 | 2006-08-31 | Fujikura Ltd | 光ファイバ母材加工装置及び光ファイバ母材加工方法 |
-
2022
- 2022-08-01 US US18/257,139 patent/US20240025789A1/en active Pending
- 2022-08-01 JP JP2022575792A patent/JP7243946B1/ja active Active
- 2022-08-01 WO PCT/JP2022/029543 patent/WO2023032556A1/ja active Application Filing
- 2022-08-01 CN CN202280050168.6A patent/CN117693493A/zh active Pending
-
2023
- 2023-03-01 JP JP2023031143A patent/JP2023060872A/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62203236U (ja) * | 1986-06-18 | 1987-12-25 | ||
JPH05319845A (ja) * | 1992-05-19 | 1993-12-03 | Fujikura Ltd | 光ファイバ母材の加工方法 |
JPH06144861A (ja) * | 1992-11-05 | 1994-05-24 | Fujikura Ltd | 光ファイバ母材の加工方法 |
KR20040055177A (ko) * | 2002-12-20 | 2004-06-26 | 엘지전선 주식회사 | 광섬유 모재 제조장치 및 이를 이용한 광섬유 모재제조방법 |
JP2006213552A (ja) * | 2005-02-02 | 2006-08-17 | Sumitomo Electric Ind Ltd | ガラス母材の加工方法および加工装置 |
JP2006225179A (ja) * | 2005-02-15 | 2006-08-31 | Fujikura Ltd | 光ファイバ母材加工装置及び光ファイバ母材加工方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2023032556A1 (ja) | 2023-03-09 |
CN117693493A (zh) | 2024-03-12 |
US20240025789A1 (en) | 2024-01-25 |
JP2023060872A (ja) | 2023-04-28 |
JP7243946B1 (ja) | 2023-03-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7295037B2 (ja) | 光ファイバ曲げメカニズム | |
JP7161485B2 (ja) | 基板上に構造化層を堆積するための装置及びその装置のセッティング方法 | |
JP5226797B2 (ja) | 光伝送媒体成形方法、光伝送媒体成形装置及び光伝送媒体製造方法 | |
EP1571133A1 (en) | Apparatus and method for manufacturing optical fiber including rotating optical fiber preforms during draw | |
JP7243946B1 (ja) | ガラスロッド製造装置及びガラスロッド製造方法 | |
JP2005225749A (ja) | 光ファイバ母材の延伸方法及び装置 | |
CN100414326C (zh) | 用于向光纤施加旋转的装置和光纤制造方法及其装置 | |
US20150007616A1 (en) | Glass base material elongating method | |
JP5398026B2 (ja) | ガラス母材の延伸方法及び装置 | |
JP2013151423A (ja) | マイクロプリズムおよびマイクロロッドレンズ、ならびにそれらを製造する方法および装置 | |
WO2017170567A1 (ja) | 光ファイバ母材の製造方法および光ファイバの製造方法 | |
JP7189776B2 (ja) | 横型旋盤 | |
TWI718298B (zh) | 光連接零件之製造方法 | |
JP2017024935A (ja) | ガラス板の曲げ加工方法 | |
WO2012029157A1 (ja) | 屈曲光伝送媒体製造装置および屈曲光伝送媒体製造方法 | |
JP5440835B2 (ja) | 溶着装置及び溶着方法 | |
JP3945808B2 (ja) | ワークの自動曲り修正方法及び修正装置 | |
JP2005104763A (ja) | 光ファイバ母材の延伸方法 | |
JP4946770B2 (ja) | 調整ステージ及び調整ステージ装置 | |
JP7464429B2 (ja) | ガラス母材の製造方法 | |
KR102443885B1 (ko) | 굽힘 가공용 지그 장치 | |
JP7371817B2 (ja) | ロッド挿入治具及びマルチコア光ファイバ母材の製造方法 | |
JP6136554B2 (ja) | ガラス母材の延伸装置およびガラス母材の製造方法 | |
JP2000167934A (ja) | 融着機 | |
JPH10310443A (ja) | ファイバ用母材の延伸装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2022575792 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22864143 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18257139 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280050168.6 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |