CN112777929A - Preform deposition method - Google Patents
Preform deposition method Download PDFInfo
- Publication number
- CN112777929A CN112777929A CN202110334985.1A CN202110334985A CN112777929A CN 112777929 A CN112777929 A CN 112777929A CN 202110334985 A CN202110334985 A CN 202110334985A CN 112777929 A CN112777929 A CN 112777929A
- Authority
- CN
- China
- Prior art keywords
- deposition method
- torch
- lamp
- preform
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000151 deposition Methods 0.000 title claims abstract description 48
- 230000008021 deposition Effects 0.000 claims abstract description 26
- 238000005245 sintering Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000007306 turnover Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Images
Classifications
-
- 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
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01486—Means for supporting, rotating or translating the preforms being formed, e.g. lathes
-
- 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
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
-
- 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
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01413—Reactant delivery systems
- C03B37/0142—Reactant deposition burners
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The application discloses a preform deposition method, which comprises the following steps: 1) the two ends of the core rod are respectively welded with an auxiliary rod, the two auxiliary rods are respectively clamped on the two chucks, and the chucks drive the auxiliary rods and the core rod to rotate; 2) moving a plurality of torches from a first end to a second end of the mandrel in sequence, each torch completing deposition of a layer of loose bodies; 3) moving a plurality of torches from the second end to the first end of the core rod in sequence, each torch completing deposition of a layer of loose bodies; 4) repeating the step 2) and the step 3), and enabling each blast lamp to move in a reciprocating mode in the whole core rod area until the outer diameter of the loose body reaches a set value; 5) and sintering the obtained loose body to obtain a prefabricated rod. According to the preform deposition method, each blast lamp can completely deposit a layer of loose body every time, and the uniformity of the outer diameter of the loose body is better compared with the existing deposition mode.
Description
Technical Field
The invention relates to the field of optical fiber preforms, in particular to a preform deposition method.
Background
As shown in fig. 1, the preform loose body is deposited by the OVD method, and the conventional operation mode is that a plurality of torches are installed at intervals on a torch holder, and deposition is performed by small-amplitude reciprocating movement of the torch holder.
This deposition mode, where two torch flames interact, causes large fluctuation in the outer diameter of the loose body, resulting in poor uniformity of the outer diameter of the final loose body, which affects the subsequent sintering operation and the wire drawing process.
Disclosure of Invention
The present invention addresses the above-mentioned problems by providing a preform deposition method.
The technical scheme adopted by the invention is as follows:
a method of depositing a preform comprising the steps of:
1) the two ends of the core rod are respectively welded with an auxiliary rod, the two auxiliary rods are respectively clamped on the two chucks, and the chucks drive the auxiliary rods and the core rod to rotate;
2) moving a plurality of torches from a first end to a second end of the mandrel in sequence, each torch completing deposition of a layer of loose bodies;
3) moving a plurality of torches from the second end to the first end of the core rod in sequence, each torch completing deposition of a layer of loose bodies;
4) repeating the step 2) and the step 3), and enabling each blast lamp to move in a reciprocating mode in the whole core rod area until the outer diameter of the loose body reaches a set value;
5) and sintering the obtained loose body to obtain a prefabricated rod.
According to the preform deposition method, each blast lamp can completely deposit a layer of loose body every time, and the uniformity of the outer diameter of the loose body is better compared with the existing deposition mode.
In one embodiment of the invention, when the blowtorch is not under the core rod, the flow of the blowtorch is reduced or the blowtorch is turned off by the mass flow controller, and when the blowtorch enters under the core rod, the blowtorch returns to the normal flow.
In one embodiment of the present invention, the steps 2) and 3) are performed by a deposition mechanism, and the deposition mechanism includes:
the fixing seat is provided with a track arranged along the length direction of the fixing seat, the track comprises a working part and buffer parts respectively positioned on two sides of the working part, the length direction of the working part is parallel to the axis of the mandrel, and the working part is positioned below the mandrel and corresponds to the mandrel;
the lamp holders comprise sliding blocks in sliding fit with the rails, the lamp holders are connected with one another through connecting pieces, and the buffer part can receive the sliding blocks of all the lamp holders;
a plurality of blowlamps respectively installed on the corresponding lamp holders;
and the driving structure is used for driving the lamp holders to reciprocate on the rail.
Through setting up buffer memory portion, can receive the slider of all lamp holders, can guarantee promptly that the blowtorch of tip also can carry out once complete deposit to the plug region.
In one embodiment of the present invention, the buffer portion is arc-shaped, and two ends of the connecting member are respectively hinged and matched with the corresponding lamp holders.
The arc design can reduce the horizontal length of the track, so that the structure is compact; because buffer memory portion is the arc, connecting piece and lamp stand articulated cooperation can make the business turn over work portion that each lamp stand can be smooth, smooth business turn over buffer memory portion.
In one embodiment of the present invention, the driving structure includes:
the rack is fixed on the fixed seat;
the driving assembly is arranged on the two lamp holders positioned at the end part and comprises a motor and a gear driven by the motor, and the gear is meshed with the rack.
When moving to the right side, the driving assembly of the rightmost lamp holder operates, and when moving to the left side, the driving assembly of the leftmost lamp holder operates.
In one embodiment of the present invention, the driving structure includes:
the rack is fixed on the fixed seat;
the driving assembly is arranged on each lamp holder and comprises a motor and a gear driven by the motor, and the gear is meshed with the rack.
All set up drive assembly on each lamp stand, can guarantee better power, make the reliable and stable reciprocating motion of lamp stand.
In one embodiment of the present invention, the blowtorch controls the flow rate through the mass flow controller, the fixing base is provided with a magnet group at the joint of the working part and the buffer part, and the magnet group includes a plurality of magnets distributed at intervals up and down; the lamp holder is provided with Hall infectors, the installation height of each Hall sensor is the same as that of the magnet corresponding to the magnet group, each Hall sensor is matched with each magnet of the magnet group in a one-to-one correspondence manner, and the mass flow controller controls the flow of the blowtorch according to the signal corresponding to the Hall infectors.
When the lamp holder is in the handing-over department of work portion and buffer portion, through magnet and hall sensor and cooperation, can make hall sensor triggered to can judge the position of lamp holder, make things convenient for mass flow controller control blast lamp flow. Through the structural design, the waste of raw materials can be greatly reduced.
In one embodiment of the present invention, the lamp holder has a bracket, and the hall sensor is mounted on the bracket.
In one embodiment of the present invention, the track is a trapezoidal groove, and the slider is a trapezoid.
In one embodiment of the present invention, the deposition mechanism further includes a dust-proof structure, and the dust-proof structure includes:
the dustproof sheet covers the upper part of the trapezoidal groove, and two ends of the dustproof sheet are fixed with the fixed seat;
the through channel is arranged on the lamp holder;
the pinch rollers are respectively arranged on two sides of the lamp holder, the dustproof sheet penetrates through the channel to penetrate through the lamp holder, and the pinch rollers are located above the dustproof sheet and compress the dustproof sheet.
The dustproof sheet is arranged to prevent dust and the like from entering the trapezoidal groove, and long-time reliable work of the deposition mechanism can be guaranteed.
The invention has the beneficial effects that: according to the preform deposition method, each blast lamp can completely deposit a layer of loose body every time, and the uniformity of the outer diameter of the loose body is better compared with the existing deposition mode.
Description of the drawings:
FIG. 1 is a prior art manner of depositing loose bodies;
FIG. 2 is a schematic view of a deposition mechanism of the present invention;
FIG. 3 is a schematic view of another angle of the deposition mechanism of the present invention;
fig. 4 is a schematic view of a dustproof structure.
The figures are numbered:
1. an auxiliary rod; 2. a loose mass; 3. a fixed seat; 4. a track; 5. a working part; 6. a buffer unit; 7. a lamp socket; 8. a connecting member; 9. a blowtorch; 10. a rack; 11. a gear; 12. a magnet group; 13. a magnet; 14. a Hall infection device; 15. a support; 16. a dust-proof sheet; 17. a through passage; 18. a pinch roller; 19. a slide block.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 2 and 3, a preform deposition method includes the steps of:
1) the two ends of the core rod are respectively welded with an auxiliary rod 1, the two auxiliary rods 1 are respectively clamped on two chucks, and the chucks drive the auxiliary rods 1 and the core rod to rotate;
2) moving a plurality of torches 9 sequentially from a first end to a second end of the mandrel, each torch 9 completing the deposition of a layer of loose bodies 2;
3) moving a plurality of torches 9 sequentially from the second end to the first end of the mandrel, each torch 9 completing the deposition of a layer of loose bodies 2;
4) repeating the step 2) and the step 3), and enabling each blast lamp 9 to move in a reciprocating mode in the whole core rod area until the outer diameter of the loose body 2 reaches a set value;
5) the obtained loose body 2 is subjected to a sintering operation to obtain a preform.
According to the preform deposition method, each blowtorch 9 can completely deposit one layer of loose bodies 2 each time, and the uniformity of the outer diameter of each loose body 2 is better compared with the existing deposition mode.
In the present embodiment, when the torch 9 is not directly below the mandrel, the flow rate of the torch 9 is reduced or the torch 9 is turned off by the mass flow controller, and when the torch 9 enters directly below the mandrel, the torch 9 returns to the normal flow rate.
As shown in fig. 2 and 3, in the present embodiment, step 2) and step 3) are performed by a deposition mechanism including:
the mandrel fixing device comprises a fixing seat 3, wherein the fixing seat 3 is provided with a track 4 arranged along the length direction of the fixing seat, the track 4 comprises a working part 5 and buffer parts 6 respectively positioned at two sides of the working part 5, the length direction of the working part 5 is parallel to the axis of a mandrel, and the working part 5 is positioned below the mandrel and corresponds to the mandrel;
the lamp holders 7 comprise sliding blocks 19 in sliding fit with the rails 4, the lamp holders 7 are connected with each other through connecting pieces 8, and the buffer part 6 can receive the sliding blocks 19 of all the lamp holders 7;
a plurality of torches 9 installed on the corresponding lamp sockets 7, respectively;
and the driving structure is used for driving each lamp holder 7 to reciprocate on the track 4.
By providing the buffer 6, it is possible to receive all the sliders 19 of the lamp sockets 7, i.e. it is possible to ensure that the torch 9 at the end can also perform a complete deposition of the core rod region.
As shown in fig. 2, in the present embodiment, the buffer portion 6 is arc-shaped, and two ends of the connecting member 8 are respectively hinged to the corresponding lamp sockets 7. The arc design can reduce the horizontal length of the track 4, so that the structure is compact; because buffer memory portion 6 is the arc, connecting piece 8 and lamp stand 7 articulated cooperation can make the business turn over work portion 5 that each lamp stand 7 can be smooth, the business turn over buffer memory portion 6 that is smooth.
As shown in fig. 3, in the present embodiment, the driving structure includes:
the rack 10 is fixed on the fixed seat 3;
and the driving assemblies are arranged on the two lamp holders 7 positioned at the end parts and comprise motors and gears 11 driven by the motors, and the gears 11 are meshed with the racks 10.
When moving to the right, the driving unit of the rightmost lamp socket 7 operates, and when moving to the left, the driving unit of the leftmost lamp socket 7 operates.
In practical use, the device can also be arranged in such a way that the driving structure comprises:
the rack 10 is fixed on the fixed seat 3;
and the driving assembly is arranged on each lamp holder 7 and comprises a motor and a gear 11 driven by the motor, and the gear 11 is meshed with the rack 10.
All set up drive assembly on each lamp stand 7, can guarantee better power, make the reliable stable reciprocating motion of lamp stand 7.
As shown in fig. 2, in the present embodiment, the torch 9 controls the flow rate through the mass flow controller, the permanent seat 3 is provided with a magnet set 12 at the joint of the working portion 5 and the buffer portion 6, and the magnet set 12 includes a plurality of magnets 13 distributed at intervals up and down; the lamp holder 7 is provided with Hall infectors 14, the installation height of each Hall sensor is the same as that of the magnet 13 corresponding to the magnet group 12, each Hall sensor is correspondingly matched with each magnet 13 of the magnet group 12, and the mass flow controller controls the flow of the blowtorch 9 according to the signal corresponding to the Hall infectors 14.
When the lamp holder 7 is located at the joint of the working part 5 and the buffer part 6, the Hall sensor can be triggered through the cooperation of the magnet 13 and the Hall sensor, so that the position of the lamp holder 7 can be judged, and the flow of the blast lamp 9 can be controlled by a mass flow controller conveniently. Through the structural design, the waste of raw materials can be greatly reduced.
As shown in fig. 2, in the present embodiment, the lamp socket 7 has a bracket 15, and the hall sensor is mounted on the bracket 15.
As shown in fig. 2, in the present embodiment, the rail 4 is a trapezoidal groove, and the slider 19 is a trapezoid. As shown in fig. 4, the deposition mechanism further includes a dust-proof structure, and the dust-proof structure includes:
the dustproof sheet 16 covers the upper part of the trapezoidal groove, and two ends of the dustproof sheet 16 are fixed with the fixed seat 3;
through the passage 17, arranged on the lamp holder 7;
the pinch rollers 18 are respectively arranged on two sides of the lamp holder 7, the dustproof sheet 16 penetrates through the lamp holder 7 through the through channels 17, and the pinch rollers 18 are located above the dustproof sheet 16 and compress the dustproof sheet 16.
The arrangement of the dust-proof sheet 16 can prevent dust and the like from entering the trapezoidal groove, and can ensure that the deposition mechanism can reliably work for a long time.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.
Claims (10)
1. A method of depositing a preform comprising the steps of:
1) the two ends of the core rod are respectively welded with an auxiliary rod, the two auxiliary rods are respectively clamped on the two chucks, and the chucks drive the auxiliary rods and the core rod to rotate;
2) moving a plurality of torches from a first end to a second end of the mandrel in sequence, each torch completing deposition of a layer of loose bodies;
3) moving a plurality of torches from the second end to the first end of the core rod in sequence, each torch completing deposition of a layer of loose bodies;
4) repeating the step 2) and the step 3), and enabling each blast lamp to move in a reciprocating mode in the whole core rod area until the outer diameter of the loose body reaches a set value;
5) and sintering the obtained loose body to obtain a prefabricated rod.
2. The preform deposition method of claim 1, wherein the flow rate of the torch is reduced or the torch is turned off by the mass flow controller when the torch is not positioned directly under the mandrel, and the torch is returned to a normal flow rate when the torch enters directly under the mandrel.
3. The preform deposition method of claim 1, wherein said steps 2) and 3) are carried out by a deposition mechanism comprising:
the fixing seat is provided with a track arranged along the length direction of the fixing seat, the track comprises a working part and buffer parts respectively positioned on two sides of the working part, the length direction of the working part is parallel to the axis of the mandrel, and the working part is positioned below the mandrel and corresponds to the mandrel;
the lamp holders comprise sliding blocks in sliding fit with the rails, the lamp holders are connected with one another through connecting pieces, and the buffer part can receive the sliding blocks of all the lamp holders;
a plurality of blowlamps respectively installed on the corresponding lamp holders;
and the driving structure is used for driving the lamp holders to reciprocate on the rail.
4. The preform deposition method of claim 3, wherein the buffer portion is arc-shaped, and both ends of the connection member are hinge-fitted with the corresponding lamp holders, respectively.
5. A preform deposition method according to claim 3 or 4, wherein the driving structure comprises:
the rack is fixed on the fixed seat;
the driving assembly is arranged on the two lamp holders positioned at the end part and comprises a motor and a gear driven by the motor, and the gear is meshed with the rack.
6. A preform deposition method according to claim 3 or 4, wherein the driving structure comprises:
the rack is fixed on the fixed seat;
the driving assembly is arranged on each lamp holder and comprises a motor and a gear driven by the motor, and the gear is meshed with the rack.
7. A preform deposition method according to claim 3 or 4, wherein the burner controls the flow rate by means of a mass flow controller, and the holder is provided with a magnet assembly at the junction of the working portion and the buffer portion, the magnet assembly comprising a plurality of magnets spaced up and down; the lamp holder is provided with Hall infectors, the installation height of each Hall sensor is the same as that of the magnet corresponding to the magnet group, each Hall sensor is matched with each magnet of the magnet group in a one-to-one correspondence manner, and the mass flow controller controls the flow of the blowtorch according to the signal corresponding to the Hall infectors.
8. The preform deposition method of claim 7, wherein the lamp holder has a support, and the hall sensor is mounted on the support.
9. The preform deposition method of claim 3, wherein the rail is a trapezoidal groove and the slider is a trapezoid.
10. The preform deposition method of claim 9, wherein the deposition mechanism further comprises a dust-prevention structure, the dust-prevention structure comprising:
the dustproof sheet covers the upper part of the trapezoidal groove, and two ends of the dustproof sheet are fixed with the fixed seat;
the through channel is arranged on the lamp holder;
the pinch rollers are respectively arranged on two sides of the lamp holder, the dustproof sheet penetrates through the channel to penetrate through the lamp holder, and the pinch rollers are located above the dustproof sheet and compress the dustproof sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334985.1A CN112777929A (en) | 2021-03-29 | 2021-03-29 | Preform deposition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334985.1A CN112777929A (en) | 2021-03-29 | 2021-03-29 | Preform deposition method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112777929A true CN112777929A (en) | 2021-05-11 |
Family
ID=75762916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110334985.1A Pending CN112777929A (en) | 2021-03-29 | 2021-03-29 | Preform deposition method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112777929A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113511806A (en) * | 2021-07-02 | 2021-10-19 | 浙江富通光纤技术有限公司 | Machining method of mandrel |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999033755A1 (en) * | 1997-12-26 | 1999-07-08 | Sumitomo Electric Industries, Ltd. | Method and apparatus for manufacturing optical fiber base material |
| CN1408662A (en) * | 2001-09-20 | 2003-04-09 | 住友电气工业株式会社 | Method for producing powder |
| JP2007210856A (en) * | 2006-02-10 | 2007-08-23 | Shin Etsu Chem Co Ltd | Method for production of optical fiber preform |
| CN102613035A (en) * | 2012-04-19 | 2012-08-01 | 苏州博田自动化技术有限公司 | Single-rail spraying machine |
| CN105271701A (en) * | 2015-11-16 | 2016-01-27 | 江苏通鼎光棒有限公司 | Device and method for protecting blow lamp guide rail in OVD sedimentation process |
| CN106892555A (en) * | 2017-02-15 | 2017-06-27 | 天津富通集团有限公司 | The manufacturing process of large-scale optical fiber prefabricating stick |
| CN110342808A (en) * | 2019-07-15 | 2019-10-18 | 富通集团（嘉善）通信技术有限公司 | The manufacturing process of preform |
| CN209508028U (en) * | 2018-11-15 | 2019-10-18 | 江苏法尔胜光子有限公司 | A kind of prefabricated fiber rod depositing of registration blowtorch driving and reversing mechanism |
-
2021
- 2021-03-29 CN CN202110334985.1A patent/CN112777929A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999033755A1 (en) * | 1997-12-26 | 1999-07-08 | Sumitomo Electric Industries, Ltd. | Method and apparatus for manufacturing optical fiber base material |
| CN1408662A (en) * | 2001-09-20 | 2003-04-09 | 住友电气工业株式会社 | Method for producing powder |
| JP2007210856A (en) * | 2006-02-10 | 2007-08-23 | Shin Etsu Chem Co Ltd | Method for production of optical fiber preform |
| CN102613035A (en) * | 2012-04-19 | 2012-08-01 | 苏州博田自动化技术有限公司 | Single-rail spraying machine |
| CN105271701A (en) * | 2015-11-16 | 2016-01-27 | 江苏通鼎光棒有限公司 | Device and method for protecting blow lamp guide rail in OVD sedimentation process |
| CN106892555A (en) * | 2017-02-15 | 2017-06-27 | 天津富通集团有限公司 | The manufacturing process of large-scale optical fiber prefabricating stick |
| CN209508028U (en) * | 2018-11-15 | 2019-10-18 | 江苏法尔胜光子有限公司 | A kind of prefabricated fiber rod depositing of registration blowtorch driving and reversing mechanism |
| CN110342808A (en) * | 2019-07-15 | 2019-10-18 | 富通集团（嘉善）通信技术有限公司 | The manufacturing process of preform |
Non-Patent Citations (1)
| Title |
|---|
| 吉庆昌著: "《现代传感器技术及实际工程应用》", 30 March 2019, 长春：吉林大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113511806A (en) * | 2021-07-02 | 2021-10-19 | 浙江富通光纤技术有限公司 | Machining method of mandrel |
| CN113511806B (en) * | 2021-07-02 | 2023-03-21 | 浙江富通光纤技术有限公司 | Machining method of mandrel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103273181A (en) | Two-axis multipoint automatic spot welding device and using method | |
| CN112777929A (en) | Preform deposition method | |
| CN101870051B (en) | H-shaped girder assembling machine for automobile | |
| CN111168378B (en) | Eight-station jack assembling machine | |
| CN110834170A (en) | Double-welding-gun double-station welding machine | |
| CN108147209B (en) | A kind of automatic line arranging machine and wire arranging method | |
| CN213857821U (en) | Positioning device for switching clamp | |
| CN112939446B (en) | Method for manufacturing prefabricated rod | |
| CN114754307A (en) | Intelligent dynamic lamplight display device | |
| CN216927151U (en) | Optical fiber adjusting mechanism of optical fiber fusion splicer | |
| CN108941957A (en) | A kind of dual power supply touching bridge full-automatic welding system | |
| CN218196916U (en) | Automatic coiler of multi-functional glass fiber sleeve pipe | |
| CN218855842U (en) | Steel plate and steel pipe cutting compound equipment | |
| CN111438498A (en) | Square tube column production line and production process | |
| KR20090064033A (en) | Slat conveyer synchronizing trasfer device | |
| CN218052258U (en) | Centering centre gripping frock | |
| CN221019302U (en) | Conveying mechanism applied to welding of steel grating | |
| CN217942141U (en) | Automatic welding equipment for barrel circumferential weld multi-gun gas shielded welding | |
| CN213969561U (en) | Automatic laser pipe cutting machine | |
| CN213126479U (en) | Modularized online automatic production line system | |
| CN105088447A (en) | Automatic doffer | |
| CN215545577U (en) | Electric spark wire-electrode cutting machine tool | |
| CN216656662U (en) | Welding tool for door frame of tractor | |
| CN114230170B (en) | Optical fiber perform reloading device | |
| CN219818386U (en) | Welding device for arched structural part |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210511 |