CN100428370C - Process and apparatus for manufacturing double-core double-layer cable - Google Patents
Process and apparatus for manufacturing double-core double-layer cable Download PDFInfo
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- CN100428370C CN100428370C CNB2006100468483A CN200610046848A CN100428370C CN 100428370 C CN100428370 C CN 100428370C CN B2006100468483 A CNB2006100468483 A CN B2006100468483A CN 200610046848 A CN200610046848 A CN 200610046848A CN 100428370 C CN100428370 C CN 100428370C
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Abstract
The present invention provides a manufacture technology and a production device of a double-core double-layer cable. The present invention merges two procedures into one procedure, the cable is formed in one step, and thus, the present invention not only improves production efficiency, but also improves product quality. The present invention comprises drive pay-off stands, pay-off discs, a tension controller, a heating device, plastic extruders, a cooling water tank, a traction wheel and a take-up disc, wherein a wire inlet end is provided with the two drive pay-off stands and the two pay-off discs, the tension controller is arranged between the two pay-off discs and the heating device, the back surface of the heating device is oppositely provided with the two plastic extruders along both sides of a conductive body, and a double-core double-layer co-extruder head is arranged between the two plastic extruders. A conical hole is arranged in a mould core support sleeve of the co-extruder head, a double-core wire outlet mould, a double-core middle mould and a double-core wire inlet mould are orderly arranged in the conical hole, both ends are fixed by press covers, and an upper semicircular feeding passage and a lower semicircular feeding passage which are arranged on the mould core support sleeve are respectively communicated with the double-core middle mould and the double-core wire outlet mould. The present invention is especially suitable for producing a temperature-control heat tracing cable.
Description
Technical field:
The invention belongs to the cables manufacturing technical field, exactly it is a kind of double-core double-layer cable manufacturing process and process units.
Background technology:
The application of double-core double-layer structural cable is very extensive, and application is all arranged in communication, petrochemical industry and household electrical appliance.In electric wire, cables manufacturing field, the process that single core conductor coats two-layer compound simultaneously is ripe at present.And the technology that adopts at present in the production of double-core double-layer structural cable all is to extrude coating at twice.As coating earlier the ground floor coating on conductor, and then two lines that will coat the ground floor coating emit simultaneously, coat second layer coating again.The shortcoming of this kind technology is that internal mold is easy to scratch the ground floor coating, and the internal layer coating is contaminated easily when coating second layer coating, and the location is inaccurate easily eccentric, and the contact of ectonexine coating is not tight, influences properties of product.The production unit that the equipment of existing process using all is made up of equipment such as pay off rack, draw drum, tension controller, heater, plastic extruder, bosh, traction wheel and take-up reels, key equipment is plastic extruder (a Sj series).There is Anhui plastics machinery head factory etc. in typical production producer.
The electric heating element of temp control electric heating cable is a kind of parallel resistance heater of band shape, is to go up at two parallel electrodes (conductor) to coat the core band that last layer PTC (positive temperature coefficient) material is made uniformly.When two leads of cable one end and power connection, electric current is crossed ptc material from a lead cross-current and is arrived another root lead.The PTC layer is exactly to be connected in parallel on two resistance heaters between the lead continuously.Through energising, the exposure level variation of metal electrode and resistance heater, it is big that interface resistance becomes, and influences life of product.In order to address this problem, have scheme to propose, on metal electrode, coat conductive formation in advance, the resistivity of this conductive formation is lower than resistance heater, for its 1/100, and well contact with the resistance heating physical efficiency.This conductive formation (title transition zone) is the part of electrode.The low resistance transition zone contacts well with the PTC heater, can not change because of long-term work.Even since long-term use or since when installing barbarous construction cause metal electrode (conductor) and low resistance transition zone to peel off, but the low resistance transition zone still contacts well with the PTC heater, and big electric current variation can not take place.According to existing technological level, coat the low resistance transition zone in advance, must increase production process, promptly extrude for twice.Earlier on metallic conductor, extrude one deck low resistance transition zone exactly, and then, extrude the PTC heater again by cross-head two parallel emitting of core of having wrapped the low resistance transition zone; Because coated low resistance transition zone, the diameter of electrode has increase, so the electrode spacing of working as accompanying-heat cable too hour, must be carried out structural adjustment; In addition, when extruding the PTC heater for the second time, being coated on for the first time low resistance transition zone on the conductor is easy to by scratch and is difficult for being found, and be easy to contaminated, and low resistance transition zone compound does not contact with PTC heater compound closely can produce sparking, cause damage, have a strong impact on product quality.
Summary of the invention:
The purpose of this invention is to provide a kind of double-core double-layer cable manufacturing process and process units, it can finish the manufacturing of double-core double-layer cable simultaneously, makes an extrusion molding of double-core double-layer cable product.Can obtain double-coated thing contact closely, not contaminated and accurate in size double-core double-layer cable.
It comprises active actinobacillus frame, draw drum, tension controller, heater, plastic extruder, bosh, traction wheel and take-up reel, it is characterized in that: two active actinobacillus frames 1 and two draw drums 2 are installed in the end of incoming cables, between two draw drums and the heater 4 tension controller 3 is housed, heater 4 back are between two plastic extruders 5 of conductor 11 both sides positioned opposite and 7, two plastic extruders double-core double-layer co-extruding machine head 6 to be installed.
The double-core double-layer cable co-extruding machine head that uses during the double-core double-layer cable is produced, comprise housing, die sleeve, core rod, gland, coupling sleeve and flow distribution plate, it is characterized in that: core rod support set 13 is housed in the housing 12, have coniform hole in the core rod support set 13, twin-core outlet mould 14, twin-core intermediate die 15 and twin-core inlet wire mould 16 are contained in the coniform hole successively, gland 19 and rear pressing cover 20 were fixing before two ends were reached by preceding packing ring 17 and back packing ring 18 respectively, have two semi-ring type feeding-passages 22 up and down on the core rod support set 13, two semi-ring type feeding-passages 22 communicate with twin-core intermediate die 15 and twin-core outlet mould 14 respectively, feeding-passage on the housing 12 communicates with coupling sleeve 23 and 24 on being installed in housing 12, coupling sleeve 23 and 24 outer flow distribution plate 25 and 26 of being equipped with.Fixing between housing 12 and the core rod support set 13 with pin 27.
The production technology of double-core double-layer cable, it is characterized in that: after two conductors 11 are emitted in the double-core double-layer co-extruding machine head 6 that enters after tension controller 3 and heater 4 heating between two plastic extruders 5 and 7 by disposable coating from two active actinobacillus frames 1 and two draw drums 2, after bosh 8 coolings, be pulled wheel 9 and take-up reel 10 and keep well again.The tension force of two conductors 11 should be consistent.
Advantage of the present invention is two procedures to be merged into one procedure, one-shot forming.Not only improved production efficiency but also improved the quality of product, made between conductor and the low resistance transition zone, between low resistance transition zone and the PTC heater contact good, size is accurate, concentricity and coating thickness all are guaranteed.Low resistance transition zone and PTC heater can make both closely be fused into one and can not peel off owing to extrude simultaneously under the hot melt state.This technology makes the thickness of low resistance transition zone can be controlled at 0.1-0.2mm.Be particularly suitable for producing temp control electric heating cable.
Description of drawings:
Fig. 1 is process unit technology arrangement figure of the present invention.
Fig. 2 is two common double-core double-layer cable extruder head structural representations that use of plastic extruder among the present invention.
Fig. 3 is a core rod support set structural representation in the double-core double-layer cable extruder head structure.
Fig. 4 is the cutaway view of the core rod support set of installation core rod.
Embodiment:
Equipment among the present invention all is existing equipment mostly.Key is the technology arrangement of extrusion die and equipment.In manufacture process, adopt two extruders, be connected with co-extruding machine head from both sides respectively with flange.Conductor wire core adopts active actinobacillus frame to emit so that permanent tension force is parallel.Heater via enters head.Accomplish two conductor wire core uniform tension in order, every line is reached the standard grade with drum when dishful, and to reduce backward pull consistent all the time for weight.Accomplish that the temperature of core when core enters head is consistent with the plastic cement temperature of being clamp-oned head by extruder, to guarantee the crystalline state of bondability and high polymer.
Two extruders is got into head to two kinds of different hemihedral crystal high polymers of low resistance transition zone and PTC heater from different directions respectively, and the annular Jiao Dao by shunt enters the shaping mould that is positioned at the shunt center from vertical Jiao Dao up and down.The electrode core is successively by inlet wire positioning module, intermediate die, outlet mould.Wherein the inlet wire die orifice is wanted tungsten carbide button's die head, is beneficial to increase useful life, and the inlet wire positioning module mainly plays the conductor positioning action.Transition zone low resistance sizing material enters intermediate die and is coated on respectively on two electrode metal cores, and intermediate die has been stipulated the outside dimension of low resistance transition zone; The PTC heating material enters the outlet mould and coats the PTC heater coating on two heart yearns of low resistance transition zone, and has been stipulated the overall dimension of core band by the outlet mould.After cooling off, obtained the stable heating element of structure and operating resistance---core band.
Claims (3)
1, double-core double-layer cable process units, it comprises active actinobacillus frame, draw drum, tension controller, heater, plastic extruder, bosh, traction wheel and take-up reel, it is characterized in that: two active actinobacillus frames (1) and two draw drums (2) are installed in the end of incoming cables, between two draw drums and the heater (4) tension controller (3) is housed, heater (4) back is two plastic extruders (5) along conductor (11) both sides positioned opposite, (7), double-core double-layer cable co-extruding machine head (6) is installed between two plastic extruders, double-core double-layer cable co-extruding machine head (6) comprises housing, die sleeve, core rod, gland, coupling sleeve and flow distribution plate, core rod support set (13) is housed in the housing (12), the core rod support set has coniform hole in (13), twin-core outlet mould (14), twin-core intermediate die (15) and twin-core inlet wire mould (16) are contained in the coniform hole successively, twin-core outlet mould (14) and twin-core inlet wire mould (16) two ends are fixed by preceding packing ring (17) and preceding gland (19) and back packing ring (18) and rear pressing cover (20) respectively, have two semi-ring type feeding-passages (22) up and down on the core rod support set (13), two semi-ring type feeding-passages (22) communicate with twin-core intermediate die (15) and twin-core outlet mould (14) respectively, feeding-passage on the housing (12) and the coupling sleeve (23) that is installed on the housing (12), (24) communicate coupling sleeve (23), (24) the outer flow distribution plate (25) that is equipped with, (26).
2, double-core double-layer cable process units according to claim 1 is characterized in that: fixing with pin (27) between the housing (12) of double-core double-layer cable co-extruding machine head and the core rod support set (13).
3, a kind of method of double-core double-layer cable process units production double-core double-layer cable as claimed in claim 1, it is characterized in that: two conductors (11) are emitted in the double-core double-layer cable co-extruding machine head (6) that enters after tension controller (3) and heater (4) heating between two plastic extruders (5), (7) by disposable coating from two active actinobacillus frames (1) and two draw drums (2) after, again after bosh (8) cooling, be pulled wheel (9) and take-up reel (10) is kept well, the tension force of two conductors (11) should be consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100468483A CN100428370C (en) | 2006-06-09 | 2006-06-09 | Process and apparatus for manufacturing double-core double-layer cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100468483A CN100428370C (en) | 2006-06-09 | 2006-06-09 | Process and apparatus for manufacturing double-core double-layer cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1866414A CN1866414A (en) | 2006-11-22 |
| CN100428370C true CN100428370C (en) | 2008-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100468483A Expired - Fee Related CN100428370C (en) | 2006-06-09 | 2006-06-09 | Process and apparatus for manufacturing double-core double-layer cable |
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| CN (1) | CN100428370C (en) |
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| CN101635183B (en) * | 2008-07-21 | 2011-08-17 | 上海慧高精密电子工业有限公司 | Small head beating-thickness wire forming machine |
| CN101977452B (en) * | 2010-10-20 | 2012-07-25 | 王崇 | Self-temperature limiting heat tracing belt and manufacturing method thereof |
| CN102024530A (en) * | 2010-12-10 | 2011-04-20 | 东莞市联升电线电缆有限公司 | Superfine high-temperature electronic wire double-core extrusion process and die thereof |
| CN102254625A (en) * | 2011-04-25 | 2011-11-23 | 北京海通荣盛科技有限公司 | Production method and equipment of bunched optical cable |
| CN102360622B (en) * | 2011-09-06 | 2012-10-31 | 江苏佳成机械有限公司 | Extruder production line and production process for producing oil field special cables |
| CN102568701B (en) * | 2012-02-09 | 2013-05-01 | 艾庆南 | Production process and equipment for producing 10-35kV power cable by silane crosslinkable polyethylene |
| 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 |
| CN104112539B (en) * | 2013-04-19 | 2016-12-28 | 江苏亨通线缆科技有限公司 | Processing unit (plant) for the high-speed data cable that communicates |
| CN103481488A (en) * | 2013-09-04 | 2014-01-01 | 安徽电气集团股份有限公司 | Extrusion molding mold for insulating layer of conducting wire |
| CN104934160A (en) * | 2015-06-01 | 2015-09-23 | 安庆钰龙橡塑机械制造有限公司 | Silicon rubber high-voltage bus extrusion production system with feeding mechanism |
| CN105845280B (en) * | 2016-06-01 | 2017-05-17 | 安徽环瑞电热器材有限公司 | Two-core three-layer heat tracing cable manufacturing device |
| CN106531363B (en) * | 2016-12-23 | 2018-09-28 | 安徽纵横高科电缆股份有限公司 | A kind of double-layer coextrusion formula extruder for cable processing |
| CN106782923B (en) * | 2016-12-26 | 2019-06-28 | 重庆渝丰鑫新线缆科技有限公司 | Electric cable compound insulation preparation method |
| CN107945988B (en) * | 2017-11-18 | 2019-04-26 | 以太龙精密机械江苏有限公司 | A kind of device for manufacturing flat cable |
| CN108688120B (en) * | 2018-08-06 | 2024-04-05 | 东莞宝奕塑胶制品有限公司 | Copper-plastic co-extrusion device for conductive track strips |
| CN110142944A (en) * | 2019-05-31 | 2019-08-20 | 广东日丰电缆股份有限公司 | The double-deck cable extruder head |
| CN111554454B (en) * | 2020-04-23 | 2023-01-10 | 上海起帆电线电缆技术有限公司 | Double-in and double-out production process and equipment for rubber sleeve cable |
| CN111497270B (en) * | 2020-04-27 | 2021-11-12 | 东莞市牛发塑胶五金有限公司 | Plastic-coated metal strip production line |
| CN114914037B (en) * | 2022-04-28 | 2024-03-15 | 河北国潜线缆有限责任公司 | Continuous production system of cable |
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| JPH05138709A (en) * | 1991-11-18 | 1993-06-08 | Hitachi Cable Ltd | Coated electric wire and cross-head of double extrusion molding machine used for its production |
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2006
- 2006-06-09 CN CNB2006100468483A patent/CN100428370C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05138709A (en) * | 1991-11-18 | 1993-06-08 | Hitachi Cable Ltd | Coated electric wire and cross-head of double extrusion molding machine used for its production |
| CN2141926Y (en) * | 1992-11-23 | 1993-09-08 | 郭锡忠 | Dies for squeezing plastic sheath for electric wire |
| JPH06314523A (en) * | 1993-04-30 | 1994-11-08 | Mitsubishi Cable Ind Ltd | Manufacture of multilayer sheath cable and device therefor |
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| Publication number | Publication date |
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| CN1866414A (en) | 2006-11-22 |
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