CN110142942B - Ultrahigh-speed secondary plastic coating production equipment and technology for air-blowing micro-cable micro-sleeve - Google Patents
Ultrahigh-speed secondary plastic coating production equipment and technology for air-blowing micro-cable micro-sleeve Download PDFInfo
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- CN110142942B CN110142942B CN201910380777.8A CN201910380777A CN110142942B CN 110142942 B CN110142942 B CN 110142942B CN 201910380777 A CN201910380777 A CN 201910380777A CN 110142942 B CN110142942 B CN 110142942B
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- sleeve
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- optical fiber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/885—External treatment, e.g. by using air rings for cooling tubular films
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0075—Light guides, optical cables
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses an ultrahigh-speed secondary plastic-coating production device and process for an air-blowing micro-cable micro-sleeve, which comprises an optical fiber pay-off rack, a plastic extruding machine, a fiber paste system, a cooling water tank, a cooling air tank, a take-up dancing wheel and a take-up rack, wherein an optical fiber is discharged from the optical fiber pay-off rack, forms a sleeve after passing through the plastic extruding machine, sequentially enters the cooling water tank and the cooling air tank, then enters the take-up dancing wheel, and then is taken up by a take-up reel on the. The production line reduces the redundant design of the sleeve path of the traditional production line, removes the single-wheel or double-wheel traction of the traditional secondary plastic coating production line, only uses the take-up system as a traction system, and simplifies the sleeve path. The optical fiber is prevented from bearing the force perpendicular to the direction of the optical fiber or the optical fiber bundle on the path, and the probability of fiber breakage or attenuation step in the tube is reduced, so that the production quality of the optical fiber is ensured. Meanwhile, the length of the whole wire can be greatly shortened, and the installation space is saved.
Description
Technical Field
The invention relates to the technical field of communication cables, in particular to ultrahigh-speed secondary plastic coating production equipment and technology for an air-blowing micro-cable micro-sleeve.
Background
The air-blowing micro cable has the characteristics of small size and light weight, and can save materials and transportation cost. Meanwhile, the air-blowing micro-cable can greatly improve the efficiency and save the labor cost by using an air-blowing type laying mode. In the present day that pipeline resources are increasingly tense, air-blowing micro cables are more favored. The key point of the air-blowing micro cable is in the manufacturing process of the micro-sleeve, the manufacturing and production speed of the existing micro-sleeve is relatively low and is about 150-250 m/min, and the improvement of the production speed of the micro-sleeve is necessary. The current commonly used secondary plastic coating production line uses single-wheel belt shifting fork type traction or double-wheel type traction as a traction scheme. See patent "an optical fiber secondary coating equipment" (application number: CN201610044706.7) and patent "single-traction optical fiber secondary coating production and its production process" (application number: CN 201710946097.9). However, with the improvement of the speed and the scheme of adding the shifting fork by the single wheel, the lateral acting force of the shifting fork on the sleeve can be greatly increased, and the driven traction wheel with certain mass is driven to rotate by double-wheel traction, so that the sleeve can bear larger tension in the parallel direction. Because the wall thickness of the micro-sleeve is very thin, the protection of the optical fiber is limited, and the stress is applied to the optical fiber, the problems of fiber breakage, steps, excessive attenuation and the like in the micro-sleeve can be caused. Meanwhile, the water cooling mode of the traditional secondary plastic coating production line increases the relative friction exponentially along with the increase of the speed of the sleeve relative to the cooling water, and is not beneficial to control of the extra length and the post shrinkage. The invention mainly aims at the ultrahigh-speed production of the micro-sleeve, designs a secondary plastic coating production line special for the micro-sleeve production and explains the ultrahigh-speed production process of the micro-sleeve.
Disclosure of Invention
The invention aims to solve the technical problem of providing the ultrahigh-speed secondary plastic-coating production equipment and the ultrahigh-speed secondary plastic-coating production process for the micro-sleeve of the air-blowing micro-cable, which have the advantages of simple structure, installation space saving and capability of improving the production quality of the optical fiber.
The technical scheme adopted by the invention is as follows: the utility model provides a production facility is moulded to air-blowing micro cable bushing hypervelocity secondary coat, its characterized in that: the winding machine comprises an optical fiber pay-off rack, a plastic extruding machine, a fiber paste system, a cooling water tank, a cooling air tank, a winding dancing wheel and a winding rack, wherein optical fibers are discharged from the optical fiber pay-off rack, form a sleeve after passing through the plastic extruding machine, sequentially enter the cooling water tank and the cooling air tank, and then enter a winding reel tool on the winding rack to wind.
According to the technical scheme, the cooling air tank is a closed air tank space, a plurality of air inlet channels are arranged below the cooling air tank along the length direction of the sleeve, the cooling air tank is also provided with a gas recovery circulating device, and the air inlet channels are connected with the gas recovery circulating device.
According to the technical scheme, the gas recovery circulating device comprises a recovery pipeline, a compression expansion module, a recovery gas storage tank, a main gas storage tank and a pressure flow controller which are sequentially connected through pipelines, wherein the recovery pipeline is communicated with a cooling gas tank, and a gas inlet channel is communicated with a gas outlet pipeline of the pressure flow controller.
According to the technical scheme, the length of the cooling water tank is 1-3 m.
According to the technical scheme, the optical fiber pay-off rack uses the active motor for paying off, and the structural speed of the motor is more than 1.5 times of the process speed.
According to the technical scheme, the ultrahigh-speed micro-sleeve secondary plastic coating production equipment is used for producing micro-sleeves, and the specification of the sleeves is 1.3-1.6 mm for 12 optical fibers of 240-250 microns; the specification of the sleeve is 1.1-1.6 mm for 12 optical fibers of 190-200 mu m.
According to the technical scheme, the production speed of the ultrahigh-speed micro-sleeve secondary plastic coating production equipment is 150-1200 m/min.
An ultrahigh-speed secondary plastic coating process for a micro-sleeve of an air-blowing micro-cable is characterized by comprising the following steps of:
the method comprises the following steps:
the optical fiber is discharged from an optical fiber reel of an optical fiber pay-off rack, the optical fiber passes through an inlet and outlet die of a fiber paste system, the fiber paste is coated on the optical fiber bundle, the optical fiber bundle with the fiber paste passes through a nose and is wrapped by extruded plastic to form a sleeve, the sleeve enters a short cooling water tank for shaping and enters a cooling air tank, then the sleeve is put on a tension dancing wheel, and then the sleeve is put on a take-up system for taking up.
According to the technical scheme, the paying-off tension of the optical fiber released from the optical fiber reel is 40-150 g; the water temperature of the cooling water tank is 20-30 ℃; the inlet temperature of the gas in the gas tank is-30 ℃ to-10 ℃, and the take-up tension is 400g to 600 g.
According to the technical scheme, the cooling gas comprises but is not limited to nitrogen, helium and air.
The beneficial effects obtained by the invention are as follows: the production line reduces the redundant design of the sleeve path of the traditional production line, removes the single-wheel or double-wheel traction of the traditional secondary plastic coating production line, only uses the take-up system as a traction system, and simplifies the sleeve path. The optical fiber is prevented from bearing the force perpendicular to the direction of the optical fiber or the optical fiber bundle on the path, and the probability of fiber breakage or attenuation steps in the tube is reduced, so that the production quality of the optical fiber is ensured; meanwhile, the water tank is shortened, a gas cooling mode is additionally used, the defect caused by resistance increase due to speed increase in the traditional water cooling mode is overcome, and post-contraction control is facilitated; the improvement of air cooling efficiency can greatly shorten the length of the whole line and save the installation space; the production line described by the invention is matched with a proper process, can realize the ultra-high-speed production of the micro-sleeve, can reach 1200m/min at most, and realizes the qualified rate equivalent to that of the production of a common low-speed production line.
Drawings
FIG. 1 is a block diagram of the present invention.
FIG. 2 is a schematic view of the structure of a cooling gas tank and a gas recovery and circulation device according to the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 and 2, the embodiment provides a production device for ultrahigh-speed secondary overmolding of an air-blowing micro-cable micro-sleeve, which comprises an optical fiber pay-off rack 1, an extruding machine 2, a fiber paste system 3, a cooling water tank 4, a cooling air tank 5, a take-up dancing wheel 6 and a take-up rack 7, wherein an optical fiber is paid off from the optical fiber pay-off rack 1, passes through the extruding machine 2 to form a sleeve 8, sequentially enters the cooling water tank 4 and the cooling air tank 5, and then enters a take-up reel on the take-up dancing wheel 6 and then is taken up by a.
The invention removes the single-wheel or double-wheel traction of the traditional secondary plastic coating production line, only uses the take-up system as the traction system, has very simple path of the sleeve, and keeps the sleeve in a linear state from the machine head to the position before the sleeve is taken up by the take-up reel.
The invention uses the cooling gas tank to replace a water tank, so as to reduce the resistance in the ultra-high speed process, wherein the cooling gas comprises but is not limited to nitrogen, helium and air; the length of the cooling shaping water tank is 1-3 m. The sleeve 8 is stretched from the handpiece, enters a short cooling water tank 4 for shaping, then enters a closed cooling air tank 5, and is wound on a take-up dancing wheel 6 and a take-up reel 7 after cooling of cooling air.
In this embodiment, the cooling air tank 5 is a closed air tank space, two ends of the air tank are both provided with 2-3 stages of sealing rubber rings to ensure sealing, the bottom of the cooling air tank 5 is positioned below the sleeve along the length direction of the sleeve, as shown in fig. 2, air passages are uniformly distributed along the length direction and can be single-row or multi-row (when the air passages are single-row, the air passages are arranged under the sleeve, when the air passages are multi-row, the air passages are symmetrically arranged by taking the sleeve as the center), the caliber of the air passages is 4-12 mm, the air blowing pressure is 0.5-5 bar, the cooling air tank 5 is further provided with a gas recovery circulating device, and the air passages are connected with the gas recovery circulating device. The gas recovery circulating device comprises a recovery pipeline 12, a compression expansion module 13, a recovery gas storage tank 14, a main gas storage tank 9 and a pressure flow controller 10 which are sequentially connected through pipelines, wherein the recovery pipeline 12 is communicated with the cooling gas tank 5, and the gas inlet channel 11 is communicated with a gas outlet pipeline of the pressure flow controller 10.
Because the cooling air tank 5 is a closed air tank space, cooling air is discharged from an air passage below and lifts the sleeve, and the sleeve is prevented from rubbing against the inner wall of the air tank. The recovery air flue 12 is arranged at the tail part of the air tank, cooling air is stored in the main air storage tank 9, the air enters the cooling air tank 5 through the air inlet channel 11 after passing through the pressure and flow control module 10, is collected from the recovery air flue 12 and enters the compression recovery system 13, liquid nitrogen can be recovered after compression and expansion for several times, and then enters the auxiliary air storage tank 14 again for recovery and standby.
In this embodiment, the optical fiber pay-off rack uses an active motor for paying off, and the structural speed of the motor is more than 1.5 times of the process speed.
The ultrahigh-speed micro-sleeve secondary plastic coating production equipment is used for producing micro-sleeves, and the specification of the sleeves is 1.3-1.6 mm for 12 optical fibers of 240-250 micrometers; the specification of the sleeve is 1.1-1.6 mm for 12 optical fibers of 190-200 mu m. The production speed of the ultrahigh-speed micro-sleeve secondary plastic coating production equipment is 150-1200 m/min. Preferably, the production speed is 150-1200 m/min.
The invention also provides a production process of the ultrahigh-speed secondary plastic-coated micro-sleeve based on the equipment, which comprises the following steps:
the optical fiber is discharged from the optical fiber reel, the paying-off tension is 40-150 g, the optical fiber passes through an inlet and outlet die of the optical fiber paste system 3, the optical fiber paste is coated on the optical fiber bundle, and the optical fiber bundle with the optical fiber paste is wrapped by extruded plastic to form a sleeve after passing through a machine head. The sleeve enters a shorter cooling water tank for shaping 4, and the water temperature of the water tank is 20-30 ℃. The jacket then entered the cooling gas tank 5, where the inlet temperature of the gas was-30 ℃. Then the sleeve is pulled up by the tension dancing wheel 6 and then pulled up by the take-up system 7 without passing through other paths. The take-up tension is 400-600 g.
Claims (9)
1. The utility model provides a production facility is moulded to air-blowing micro cable bushing hypervelocity secondary coat, its characterized in that: including optic fibre pay off rack, extruding machine, fine cream system, cooling trough, cooling gas tank, receipts line dancing wheel, take-up stand, optic fibre emits from optic fibre pay off rack, forms the sleeve pipe behind the extruding machine and gets into after cooling trough and the cooling gas tank in proper order and get into the receipts line dish utensil on the take-up stand after receiving line dancing wheel and receive the line, the cooling gas tank is confined gas tank space, is located sheathed tube below along sheathed tube length direction in the bottom in cooling gas tank and is equipped with a plurality of intake ducts, the cooling gas tank still disposes gaseous recovery circulating device, the intake duct links to each other with gaseous recovery circulating device.
2. The air-blowing micro-cable micro-sleeve ultrahigh-speed secondary overmolding production equipment according to claim 1, characterized in that: the gas recovery circulating device comprises a recovery pipeline, a compression expansion module, a recovery gas storage tank, a main gas storage tank and a pressure flow controller which are sequentially connected through pipelines, wherein the recovery pipeline is communicated with a cooling gas tank, and a gas inlet channel is communicated with a gas outlet pipeline of the pressure flow controller.
3. The air-blowing micro-cable micro-sleeve ultrahigh-speed secondary overmolding production equipment according to claim 1, characterized in that: the length of the cooling water tank is 1-3 m.
4. The air-blowing micro-cable micro-sleeve ultrahigh-speed secondary overmolding production equipment according to claim 1, characterized in that: the optical fiber pay-off rack is paid off by using an active motor, and the structural speed of the motor is more than 1.5 times of the process speed.
5. The air-blowing micro-cable micro-sleeve ultrahigh-speed secondary overmolding production equipment according to claim 1, characterized in that: the ultrahigh-speed micro-sleeve secondary plastic coating production equipment is used for producing micro-sleeves, and the specification of the sleeves is 1.3-1.6 mm for 12 optical fibers of 240-250 micrometers; the specification of the sleeve is 1.1-1.6 mm for 12 optical fibers of 190-200 mu m.
6. The air-blowing micro-cable micro-sleeve ultrahigh-speed secondary overmolding production equipment according to claim 1, characterized in that: the production speed of the ultrahigh-speed micro-sleeve secondary plastic coating production equipment is 150-1200 m/min.
7. A production process of the air-blowing micro-cable micro-sleeve ultrahigh-speed secondary plastic coating production equipment based on any one of claims 1 to 6 is characterized in that: the method comprises the following steps:
the optical fiber is discharged from an optical fiber reel of an optical fiber pay-off rack, the optical fiber passes through an inlet and outlet die of a fiber paste system, the fiber paste is coated on the optical fiber bundle, the optical fiber bundle with the fiber paste is wrapped by extruded plastic to form a sleeve pipe through a machine head,
the sleeve enters a cooling water tank for shaping, and then enters a cooling air tank, and then the sleeve is put on a tension dancing wheel and then is put on a take-up system for taking up wires.
8. The production process according to claim 7, characterized in that: the paying-off tension of the optical fiber released from the optical fiber reel is 40-150 g; the water temperature of the cooling water tank is 20-30 ℃; the inlet temperature of the gas in the gas tank is minus 30 ℃ to minus 10 ℃, and the take-up tension is 400g to 600 g.
9. The production process according to claim 7, characterized in that: the cooling gas includes, but is not limited to, nitrogen, helium, and air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910380777.8A CN110142942B (en) | 2019-05-08 | 2019-05-08 | Ultrahigh-speed secondary plastic coating production equipment and technology for air-blowing micro-cable micro-sleeve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910380777.8A CN110142942B (en) | 2019-05-08 | 2019-05-08 | Ultrahigh-speed secondary plastic coating production equipment and technology for air-blowing micro-cable micro-sleeve |
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| Publication Number | Publication Date |
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| CN110142942A CN110142942A (en) | 2019-08-20 |
| CN110142942B true CN110142942B (en) | 2020-12-11 |
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| CN111069182B (en) * | 2019-12-29 | 2021-05-14 | 山东鹰联光电科技股份有限公司 | Optical fiber secondary plastic sheathing equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3398954B2 (en) * | 1999-03-23 | 2003-04-21 | 住友電気工業株式会社 | Manufacturing method of synthetic resin wire |
| JP3098232B1 (en) * | 1999-06-28 | 2000-10-16 | 株式会社フジクラ | Method and apparatus for manufacturing optical fiber |
| JP2003146688A (en) * | 2001-11-08 | 2003-05-21 | Fujikura Ltd | Apparatus and method for manufacturing primary coated optical fiber, and primary coated optical fiber |
| US20090291199A1 (en) * | 2008-05-22 | 2009-11-26 | Paul Andrew Chludzinski | Apparatus and methods of control for coolant recycling |
| CN102346286B (en) * | 2011-11-21 | 2013-06-26 | 江苏江扬电缆有限公司 | Manufacturing method of full-dry optical cable loose tube |
| CN204807784U (en) * | 2015-08-20 | 2015-11-25 | 张玲燕 | Improved generation optical cable production facility |
| CN107601846B (en) * | 2017-10-30 | 2020-08-11 | 长飞光纤光缆股份有限公司 | Optical fiber cooling device for high-speed wire drawing |
| CN108002697B (en) * | 2017-11-30 | 2020-04-14 | 长飞光纤光缆股份有限公司 | Spray type cooling device and method for online cooling of optical fiber |
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