CN100470686C - Technology for producing PVC insulated nylon flexible wire using double machine extruding method - Google Patents
Technology for producing PVC insulated nylon flexible wire using double machine extruding method Download PDFInfo
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- CN100470686C CN100470686C CNB2004100133669A CN200410013366A CN100470686C CN 100470686 C CN100470686 C CN 100470686C CN B2004100133669 A CNB2004100133669 A CN B2004100133669A CN 200410013366 A CN200410013366 A CN 200410013366A CN 100470686 C CN100470686 C CN 100470686C
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- chloride insulation
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Abstract
Disclosed is a technique using dual-machine extrusion method to produce polyvinyl chloride insulating nylon jacket electric wire. Make nylon and polyvinyl chloride separately melt by nylon extruding machine and PVC extruding machine, which are separately injected into different ingates and channels of shunt in prime machinery head, firstly polyvinyl chloride is extruded and then nylon to form tightly connected insulating layer of polyvinyl chloride and nylon jacket layer covered on it. Polyvinyl chloride insulating nylon jacket electric wire is formed through word sprinkling, cooling and taking up of capstan. It has the advantages of increased smoothness and mechanical performance of electric wire surface, simplified technique, shortened production line, prolonged wire service life and excellent safety and reliability.
Description
Technical field
The present invention relates to a kind of production technology of polyvinyl chloride insulation nylon flexible wire, especially a kind of technology that adopts the two-shipper coextruding method to produce the polyvinyl chloride insulation nylon flexible wire.
Background technology
The permanent wiring of plastics series mainly divides two big classifications with electric wire: a class is a BLV, and another kind of is the polyvinyl chloride insulation nylon flexible wire.At present, the domestic market is widely used to be BLV, and such electric wire is in the manufacturing of existing 40 years of China and use historical, range of application is extremely wide, but because of it is the single insulating structure, exists overload capacity and short circuit thermal capacity little, non-refractory, be subjected to thermal contraction, the insulating barrier mechanical strength is low, and oil resistant is not dirty pollutes and the chemical substance corrosion, easy damaged insulating barrier during cable installation in pipe, be not suitable for wet environment and use, poor safety performance, drawback such as useful life is short.And the polyvinyl chloride insulation nylon flexible wire is the combining structure that is made of polyvinyl chloride insulation layer and nylon sheath wire; adopt nylon as protective layer; the ability of whole thermal deformation resistant of electric wire and anti-extraneous mechanical damage is improved; but the thickness of attenuate polyvinyl chloride insulation layer; make the electric wire external diameter reduce; increase the open ended diameter of wire of conduit and radical; the self lubricity that nylon is good makes the electric wire poling easy; easy damaged insulating barrier not, oil resistant pollutes and chemical stability is good, safe and reliable, long service life.Based on above-mentioned comparison, the trend that domestic market polyvinyl chloride insulation nylon flexible wire replaces BLV is obvious day by day.
At present, the production technology of polyvinyl chloride insulation nylon flexible wire mainly contains the unit secondary and extrudes with the two-shipper tandem and extrude dual mode.Adopting the production technology of unit secondary extrusion way is to extrude polyvinyl chloride and nylon at twice by an extruder, key step is a conductor wire core through behind the unwrapping wire → extrude polyvinyl chloride → cooling → lettering → steps such as take-up, passes through unwrapping wire → extrude nylon → air cooling → steps such as hot water cooling → cold water cooling → take-up to make polyvinyl chloride insulation nylon flexible wire finished product again.Because when being nylon that the molten condition temperature reaches 250 ℃ and being extruded on the complete cooled polyvinyl chloride insulation layer, insulating barrier is subjected to the thermal contraction meeting to produce distortion, be full of cracks suddenly, it is not tight that nylon is engaged with insulating barrier, leave the space between two layers, cause the nylon sheath wire surface to play bag, influence surface flatness, mechanical performance and the security reliability of electric wire finished product, shorten the useful life of electric wire finished product, and the production line length, the technology repeating step is many.Adopting the production technology of two-shipper tandem extrusion way is to extrude polyvinyl chloride and nylon respectively by two extruders, and key step is: conductor wire core is through unwrapping wire → extrude polyvinyl chloride → lettering → extrude nylon → air cooling → steps such as hot water cooling → cold water cooling → take-up to make polyvinyl chloride insulation nylon flexible wire finished product.The production technology of this kind employing two-shipper tandem extrusion way is compared with the production technology that adopts unit secondary extrusion way, shortened production line, simplified technology, nylon is extruded on the polyvinyl chloride insulation layer that still keeps higher temperature, reduced distortion, be full of cracks that insulating barrier acutely produces because of variations in temperature, also alleviated the nylon sheath wire surface simultaneously and played bag, the wrinkling degree in knee.But because in this production technology, be coated on polyvinyl chloride insulation layer on core moisture and the dust in can absorbed air when in air, stopping, causing between nylon sheath wire layer and the polyvinyl chloride insulation layer is not vacuum state, engage not tight, make surface flatness, mechanical performance and the security reliability of polyvinyl chloride insulation nylon flexible wire reduce, electric wire wears out and reduction of service life and initiation security incident easily.
Summary of the invention
Purpose of the present invention will provide a kind of nylon and polyvinyl chloride of making to engage closely exactly, increase the service life, effectively improve the surface flatness and the mechanical performance of electric wire, simplify technology, shorten production line, save the factory building space, the technology that the employing two-shipper coextruding method that security reliability is good is produced the polyvinyl chloride insulation nylon flexible wire.
The purpose of this utility model is achieved in that and adopts the two-shipper coextruding method to produce the polyvinyl chloride insulation nylon flexible wire, comprises the steps:
A. paying out machine is emitted conductor wire core, and core enters host header;
B. suck hopper respectively after nylon material and the polyvinyl chloride material drying, enter nylon extruder and PVC extruder heat fused respectively by hopper; Nylon material enters the high temperature barrel be heated to 180 ℃ in the aft body thermal treatment zone of nylon extruder after, progressively is warming up to 250 ℃, and nylon material keeps the time of 250 ℃ of design temperatures to be no more than 15 minutes; Must vacuumize in the extrusion of nylon material and polyvinyl chloride material;
C. the nylon material of fusion enters the host header that is connected with the PVC extruder with the nylon extruder respectively with the polyvinyl chloride material, inject the different cast gates and the runner of the shunt of installing in the host header more respectively, order according to covered with nylon layer behind elder generation's coating polyvinyl chloride insulation layer is extruded in the polyvinyl chloride insulation layer and the nylon sheath wire layer that form fluid-tight engagement on the core;
D. the nylon flexible wire of finishing after extruding is drawn from host header, identifies at surperficial spray printing by ink jet numbering machine;
E. the electric wire after the spray printing sign solidifies through air cooling and cold water crystallisation by cooling;
F. finish the electric wire capstan winch take-up of above-mentioned steps and make polyvinyl chloride insulation nylon flexible wire finished product.
The shunt of installing in the host header is provided with twice cast gate and runner, the 1st road cast gate and runner that the polyvinyl chloride material injects shunt are extruded in formation polyvinyl chloride insulation layer on the core, and the 2nd road cast gate of nylon material injection shunt and runner are extruded in rapidly on the polyvinyl chloride insulation layer and form nylon sheath wire; Enter the high temperature barrel polyvinyl chloride material is heated to 140 ℃ in PVC extruder aft body after and progressively be warming up to 170 ℃; Should measure nylon extruder machine neck temperature before nylon is extruded, make machine neck temperature equal 215 ℃ of nylon melting temperatures, and make the core rod temperature of nylon extruder be not less than 180 ℃ of the crystallization temperatures of nylon; The nylon material water content is higher than at 0.3% o'clock needs dry back to suck hopper by suction feeder, and the nylon material of opening open-assembly time in air is no more than 45 minutes; The polyvinyl chloride insulation nylon flexible wire should be immersed in the cooling water when carrying out the cold water cooling fully.
The molten state nylon that the present invention adopts the two-shipper co-extrusion technology that the nylon extruder is extruded injects different cast gates and the runner on the shunt in the host header simultaneously with the molten state polyvinyl chloride that the PVC extruder is extruded, core extrudes nylon after being extruded polyvinyl chloride immediately, prevent that the polyvinyl chloride insulation layer from stopping in air, avoid dust and moisture in the polyvinyl chloride insulation layer absorbed air, guarantee the electric property and the apparent mass of electric wire; Because nylon just extrudes rapidly when the polyvinyl chloride insulation layer keeps higher temperature, form the nylon sheath wire layer that coats the polyvinyl chloride insulation layer, polyvinyl chloride insulation layer and nylon sheath wire layer are realized fluid-tight engagement under the condition of high temperature, make and be in vacuum state between two-layer, avoiding shelling and air to infiltrate the acceleration electric wire wears out, prolonged the useful life of nylon flexible wire, improved the security reliability of this electric wire, effectively prevent the generation of a nylon sheath wire surface bag, knee wrinkling, improved the surface flatness and the mechanical performance of electric wire; Carry out at the host header inner sealing owing to extruding step again, can effectively prevent airborne dust pollution, guarantee the quality of finished product electric wire; All be connected with the PVC extruder owing to the nylon extruder again with host header, polyvinyl chloride extrudes and extrudes two steps with nylon and almost carry out simultaneously by different cast gates on the shunt and runner, distance is minimum between the production line of place, shortened the production line length of prior art largely, saved the factory building space, reduce steps such as cooling, lettering after the polyvinyl chloride insulation layer extrudes and directly extruded nylon, simplified technology, shortened process time.
Description of drawings
The present invention is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is technological process of production figure of the present invention.
Fig. 2 is the technological process of production figure that adopts two-shipper tandem extrusion way.
Fig. 3 is the technological process of production figure that adopts unit secondary extrusion way.
Embodiment
Embodiment:
Employing two-shipper coextruding method is as shown in Figure 1 produced the technology of polyvinyl chloride insulation nylon flexible wire, and concrete steps are as follows:
1, the inner chamber of cleaning nylon extruder, PVC extruder and host header, connector, shunt etc., remove adhere to deposit glue impurity and burnt grain, installation mold also carries out the surface smoothness inspection to mould;
2, paying out machine is emitted core, and core enters the host header preheating, and core should adopt the production of squash type extrusion way to obtain;
3, adopt the dry nylon material of carrying of vacuumize Material sucking machine, nylon material water content after drying should not be higher than 0.3%, and the nylon material of sealing off exposes in air and is no more than 45 minutes;
4, vacuumize in nylon extruder, PVC extruder and the host header;
5, dried nylon material sucks hopper, enter the heating of nylon extruder again, enter the high temperature barrel when being heated to 180 ℃ and progressively be warming up to 250 ℃, the complete fusion of nylon material is viscous state, the time that nylon material rests on the high temperature barrel is no more than 15 minutes, measure nylon extruder machine neck temperature and core rod temperature before nylon is extruded, make machine neck temperature keep 215 ℃ of nylon melting temperatures, the core rod temperature is not less than 180 ℃ of nylon crystallization temperatures;
6, suck hopper after the polyvinyl chloride material drying, enter the heating of PVC extruder again, enter the high temperature barrel when being heated to 140 ℃ and progressively be warming up to 170 ℃, the softening molten state that is of polyvinyl chloride gradual change;
7, the polyvinyl chloride material after the fusing injects the 1st road cast gate and runner of the shunt in the host header, extrudes passing to enter on the core of shunt rapidly, forms the polyvinyl chloride insulation layer;
8, the nylon material of fusion also injects the 2nd road cast gate and runner of shunt simultaneously, extrudes on the polyvinyl chloride insulation layer that coats core immediately, forms nylon sheath wire;
9, adopt ink special and ink jet numbering machine to extrude the nylon flexible wire surface spray printing sign of from host header, drawing finishing;
10, the electric wire after the spray printing sign carries out air cooling, and air cooling length is 0.5 meter;
11, the nylon flexible wire after air cooling is immersed in the cold rinse bank fully and cools off, and tank length is 1-3.5 rice;
12, finish cooled electric wire drying after the capstan winch take-up make polyvinyl chloride nylon flexible wire finished product.
Claims (6)
1, a kind of technology that adopts the two-shipper coextruding method to produce the polyvinyl chloride insulation nylon flexible wire is characterized in that: comprise the steps:
A. paying out machine is emitted conductor wire core, and core enters host header;
B. suck hopper respectively after nylon material and the polyvinyl chloride material drying, enter nylon extruder and PVC extruder heat fused respectively by hopper; Described nylon material enters the high temperature barrel be heated to 180 ℃ in the aft body thermal treatment zone of nylon extruder after, progressively is warming up to 250 ℃, and nylon material keeps the time of 250 ℃ of design temperatures to be no more than 15 minutes; Must vacuumize in the extrusion of nylon material and polyvinyl chloride material;
C. the nylon material of fusion enters the host header that is connected with the PVC extruder with the nylon extruder respectively with the polyvinyl chloride material, inject the different cast gates and the runner of the shunt of installing in the host header more respectively, order according to covered with nylon layer behind elder generation's coating polyvinyl chloride insulation layer is extruded in the polyvinyl chloride insulation layer and the nylon sheath wire layer that form fluid-tight engagement on the core;
D. the nylon flexible wire of finishing after extruding is drawn from host header, identifies at surperficial spray printing by ink jet numbering machine;
E. the electric wire after the spray printing sign solidifies through air cooling and cold water crystallisation by cooling;
F. finish the electric wire capstan winch take-up of above-mentioned steps and make polyvinyl chloride insulation nylon flexible wire finished product.
2, employing two-shipper coextruding method according to claim 1 is produced the technology of polyvinyl chloride insulation nylon flexible wire, it is characterized in that: the shunt of installing in the described host header is provided with twice cast gate and runner, the 1st road cast gate and runner that the polyvinyl chloride material injects shunt are extruded in formation polyvinyl chloride insulation layer on the core, and the 2nd road cast gate of nylon material injection shunt and runner are extruded in rapidly on the polyvinyl chloride insulation layer and form nylon sheath wire.
3, employing two-shipper coextruding method according to claim 1 is produced the technology of polyvinyl chloride insulation nylon flexible wire, it is characterized in that: enter the high temperature barrel described polyvinyl chloride material is heated to 140 ℃ in PVC extruder aft body after and progressively be warming up to 170 ℃.
4, employing two-shipper coextruding method according to claim 1 is produced the technology of polyvinyl chloride insulation nylon flexible wire, it is characterized in that: should measure nylon extruder machine neck temperature before nylon is extruded, make machine neck temperature equal 215 ℃ of nylon melting temperatures, and make the core rod temperature of nylon extruder be not less than 180 ℃ of the crystallization temperatures of nylon.
5, employing two-shipper coextruding method according to claim 1 is produced the technology of polyvinyl chloride insulation nylon flexible wire, it is characterized in that: the nylon material water content is higher than at 0.3% o'clock needs dry back to suck hopper by suction feeder, and the nylon material of opening open-assembly time in air is no more than 45 minutes.
6, employing two-shipper coextruding method according to claim 1 is produced the technology of polyvinyl chloride insulation nylon flexible wire, it is characterized in that: described polyvinyl chloride insulation nylon flexible wire should be immersed in the cooling water when carrying out the cold water cooling fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100133669A CN100470686C (en) | 2004-06-24 | 2004-06-24 | Technology for producing PVC insulated nylon flexible wire using double machine extruding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100133669A CN100470686C (en) | 2004-06-24 | 2004-06-24 | Technology for producing PVC insulated nylon flexible wire using double machine extruding method |
Publications (2)
| Publication Number | Publication Date |
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| CN1595547A CN1595547A (en) | 2005-03-16 |
| CN100470686C true CN100470686C (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100133669A Expired - Fee Related CN100470686C (en) | 2004-06-24 | 2004-06-24 | Technology for producing PVC insulated nylon flexible wire using double machine extruding method |
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Families Citing this family (15)
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| CN1901104B (en) * | 2006-07-21 | 2010-05-12 | 朱水良 | Method for producing cable aluminum sheath |
| CN101947891B (en) * | 2010-08-04 | 2012-03-07 | 佛山市南海易乐工程塑料有限公司 | Automatic code spraying system and method for plastic profile rolled strips |
| KR100992189B1 (en) * | 2010-08-24 | 2010-11-04 | 주식회사 넥스메카 | Method and apparatus for bonding insulated wires |
| CN102751051A (en) * | 2011-04-21 | 2012-10-24 | 樊立敏 | Diverter-less headpiece for plastic extruding of electric wires and cables and using method thereof |
| CN102956307A (en) * | 2011-08-26 | 2013-03-06 | 江苏兴海线缆有限公司 | Elastic body polrvinyl chloride nylon sheathed cable |
| CN102403074A (en) * | 2011-11-21 | 2012-04-04 | 安徽蓝德集团股份有限公司 | Method and equipment for spraying and printing mark on surface of cable |
| CN102768886A (en) * | 2012-08-06 | 2012-11-07 | 江苏港宏电线电缆有限公司 | Method for producing PVC insulated nylon jacketed wire |
| CN102982916A (en) * | 2012-11-22 | 2013-03-20 | 安徽天星光纤通信设备有限公司 | Cable sheath wrapping device with spraying code space control |
| CN103021580A (en) * | 2012-12-19 | 2013-04-03 | 湖州凯博电子线缆有限公司 | Production method for double-layer co-extrusion wire |
| CN103971856A (en) * | 2014-05-28 | 2014-08-06 | 山东中州电缆有限公司 | Method for manufacturing nylon jacketed cable |
| CN104217825A (en) * | 2014-08-28 | 2014-12-17 | 昆山勃盛电子有限公司 | Production method about once-extrusion forming of cable insulation layer and sheath layer |
| CN105551691B (en) * | 2015-12-17 | 2017-05-03 | 浙江五丰电缆有限公司 | Cable extrusion technology |
| CN111627610A (en) * | 2020-07-09 | 2020-09-04 | 陕西昆缆电缆制造有限公司 | Nylon composite insulating cloth wire and manufacturing process thereof |
| CN112743801A (en) * | 2020-12-16 | 2021-05-04 | 通鼎互联信息股份有限公司 | Rounding method of cable sheath |
| CN113085126A (en) * | 2021-03-31 | 2021-07-09 | 重庆鸽牌电线电缆有限公司 | Negative pressure cleaning device and method in electric wire production process |
-
2004
- 2004-06-24 CN CNB2004100133669A patent/CN100470686C/en not_active Expired - Fee Related
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| CN1595547A (en) | 2005-03-16 |
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Owner name: HUBEI HONGQI CABLE CO., LTD. Free format text: FORMER OWNER: HUBEI RED SPECIAL CABLE CO.LTD. Effective date: 20081010 |
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Effective date of registration: 20081010 Address after: Postal code 1, Jiangnan Road, Yichang, Hubei: 443004 Applicant after: Hubei Hongqi Cable Co., Ltd. Address before: Postal code 1, Jiangnan Road, Yichang, Hubei: 443004 Applicant before: Special Cable Co., Ltd. of Hubei Hongqi |
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