CN101800091A - Pre-branched cable and manufacturing method thereof - Google Patents
Pre-branched cable and manufacturing method thereof Download PDFInfo
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- CN101800091A CN101800091A CN 201010123890 CN201010123890A CN101800091A CN 101800091 A CN101800091 A CN 101800091A CN 201010123890 CN201010123890 CN 201010123890 CN 201010123890 A CN201010123890 A CN 201010123890A CN 101800091 A CN101800091 A CN 101800091A
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- backbone
- branch line
- separator
- branched cable
- insulating barrier
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Abstract
The invention discloses a pre-branched cable and a manufacturing method thereof. The pre-branched cable comprises a joint and a protective layer, wherein the joint is formed by connecting a branch line and a trunk line, and the protective layer is formed by injecting rubber to part of a protective layer of the trunk line and the branch line and packaging into a whole. After the method carries out the binding of a current electrical connection insulation grade on the metallic conductors of the exposed trunk line and the exposed branch line so as to form an isolation layer and an insulation layer, the joint formed by connecting the branch line and the trunk line and part of the protective layer of the trunk line and the branch line are injected with the rubber together and formed. The pre-branched cable based on the technical scheme of the invention has reliable connection, good applicability and long service life.
Description
Technical field
The present invention relates to a kind of pre-branched cable and preparation method thereof, belong to pre-formed branch cable technical field.
Background technology
Outer protective sleeve, primary insulation on one section backbone cable that the present method of making the rubber pre-branched cable is first strip off select location make its metallic conductor exposed; Again the branch line cable is peelled off sheath, insulation, expose and fall it behind the cable end and be crimped on the backbone cable metal conductor of peelling off insulation.Described crimping is carried out the crimping moulding by the conductor connector, and this moulding process carries out compression molding to the joint of this crimping moulding with vulcanizing press at last.This method is owing to need vulcanizing press, and branch line is the crimping moulding with being connected of backbone, and not only difficulty is big, and the connection resistance of crimping moulding is big, and useful life is short.And the joint outward appearance is uneven easily, and is rough, and reliability, consistency are poor, and the junction bonding strength of protective layer is low in addition, is difficult to use in that wet environment is medium-term and long-term.The method production cycle of mold pressing is long, and the rubber-covered employing of this moulding process of application at present is that natural/butylbenzene is the material of main body simultaneously, and its insulation property are difficult to guarantee the insulation property of rubber pre-branched cable well below second third electro-insulating rubber.
Thereby in numerous cable use occasions, the joint of backbone cable and branch line cable is handled, and has just become the outstanding problem in confession, the electric power distribution network construction.The rubber pre-branched cable is used widely in buried, middle-high building, tunnel, mine, airport, harbour and modernized Standard Factory Room, but because of the problems referred to above, enables and should be subjected to certain restriction.
In order to improve joint efficiency, a kind of pre-branched cable manufacture method that the metal case fastens sealing of passing through has also appearred at present, and this method is connected backbone earlier with branch line, do the insulation processing then, fastens and be fastenedly connected by described metal case afterwards to form.Because of metal case self can not contribute to bonding strength, in order to reach reliable connection, the core of backbone and branch line also needs extra connector to be connected usually, complex structure, and bonding strength can't guarantee.In addition, the syndeton poor sealing performance of this fastening, serviceability is poor under rugged environment.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of connection reliable, applicability is good, and the pre-branched cable of long service life and preparation method thereof.
According to a first aspect of the invention:
A kind of pre-branched cable comprises the branch line and the backbone of electric connection, and the metallic conductor that described branch line exhumes in advance with the backbone connecting portion and when being connected is coated with separator and insulating barrier; And this pre-branched cable comprises also that described branch line is connected formed joint and backbone and branch line with backbone partial protection layer injection rubber is packaged into one and the protective layer that forms.
Based on the pre-branched cable of first aspect of the present invention, adopt the protective layer of injection rubber encapsulated moulding, and mainly carry external stress; and branch line is with after the backbone core is connected; what form basically is to electrically connect, and seldom carries external stress, has guaranteed the reliability that connects.On the other hand, because injection rubber encapsulation can form tight protection, in humidity or corrosive atmosphere lower contact with can obtain good protection, extended the scope of application of pre-branched cable greatly.
Further, the injection rubber-moulding all will dispose mould, can guarantee the consistency of joint in this case.
Above-mentioned pre-branched cable, described branch line is vertically connected on the described backbone.
Above-mentioned pre-branched cable, a core of described branch line axially is arranged in order connection along described backbone.
Above-mentioned pre-branched cable, described joint integral body is triangular in shape.
Above-mentioned pre-branched cable, the welding of the metallic conductor that is connected to corresponding core of described branch line and backbone.
Above-mentioned pre-branched cable, the thickness of described separator are not less than the thickness of the master core separator of described backbone; The thickness of described insulating barrier is not less than the thickness of the master core insulating barrier of described backbone.
Above-mentioned pre-branched cable, totally three layers of described separator box insulating barriers, wherein insulating barrier forms the intermediate layer, and separator forms two-layer in addition.
Second aspect of the present invention, a kind of making is the method for the described pre-branched cable of claim 1 as described, and it may further comprise the steps:
A) precalculated position of backbone is connected the termination with branch line and peels off moulding by connection request;
B) electrically connect backbone and branch line;
It is further comprising the steps of:
C) metallic conductor of exposed backbone and branch line is carried out currently being electrically connected the colligation of the class of insulation to form separator and insulating barrier; And
D) described branch line is connected formed joint with backbone and injects rubber-moulding with the partial protection layer of backbone and branch line.
According to second aspect method of the present invention, the injection rubber-moulding technology that is adopted, since equipment few, and version is all compact, is convenient to the applicability of environment, especially is convenient to field fabrication.
Comparatively speaking, the packing forms of this injection rubber, low relatively to the requirement that electrically connects, can select present crimping for use, twist joint, weld or connect by wire clamp, applicability is better, has also alleviated working strength of workers greatly.
Said method, backbone adopts welding with being connected of branch line, makes to connect resistance less than predetermined resistance.
Said method, described injection rubber-moulding are that the partial protection layer with described joint and backbone and branch line places in a molding chamber, adopt the rubber injection machine injection to form rubber cover.
Said method is characterized in that: first colligation first separator of described step c), rubber-coated then insulating barrier twines second separator afterwards.
Said method, described first separator is selected polyester belt for use.
Preferably, described polyester belt selects for use heatproof degree grade at 150 ℃ polyurethane tape.
Described second separator is selected nonwoven fabric belts for use.
The thickness of described second separator is 0.07～0.10mm.
Described insulating barrier is that ethylene-propylene rubber is material of main part.
Described protective layer is that haloflex is a material of main part.
Description of drawings
Below in conjunction with Figure of description technical scheme of the present invention is further described, makes those skilled in the art better understand the present invention, wherein:
Fig. 1 is the structural representation of pre-branched cable embodiment of the present invention.
1, master core, 2, main metallic conductor, 3, joint, 4, insulating barrier, 5, separator, 6, a metallic conductor, 7, protective layer, 8, backbone, 9, a core, 10, branch line.
Embodiment
With reference to Figure of description 1, it shows a kind of pre-branched cable, comprises the branch line 10 and the backbone 8 of electric connection, and the metallic conductor that described branch line exhumes in advance with the backbone connecting portion and when being connected is coated with separator 5 and insulating barrier 4; And this pre-branched cable comprises also that described branch line is connected formed joint 3 and backbone and branch line with backbone partial protection layer injection rubber is packaged into one and the protective layer 7 that forms.
About the protective layer that this programme adopted; because this protective layer is that a kind of sealing grade is than higher protective layer; and this protective layer also plays interconnect function; as previously mentioned; the corresponding reduction of the connection request of butt joint; about the selection of described electric connection and separator, insulating barrier, can select existing means for use basically, also can satisfy the instructions for use under this programme condition.
Syndeton as for branch line and backbone, those skilled in the art also can have more selection, and under any version, the structural strength of connection and reliability can both be guaranteed, thereby can make this pre-branched cable that wider practicality is arranged.Preferably, described branch line is vertically connected on the described backbone, promptly forms the T type of often saying this area and connects, and can obtain maximum connection reliability in theory.
Further, in order to improve the reliability of connection, a core 9 of described branch line axially is arranged in order connection along described backbone, like this, be convenient to the setting of separator and insulating barrier, and have enough spaces to isolate and insulate between each contact and between the core bare exposed conductor.Based on this, those skilled in the art may expect the circumferential distribution of contact, Comparatively speaking, though all considered the reliability of isolating and insulating, but axial distribution is more reasonable, circumferentially distribution ought to be that a kind of deterioration substitutes, and the cabling of the core that circumferentially distributes also is easy to generate interference, and manufacture difficulty is also big.
Based on the joint of said structure, its structural entity is triangular in shape, has also comprised described protective layer here, and stress is disperseed, and further improves the reliability that connects.
Preferably, the welding of the metallic conductor that is connected to corresponding core of described branch line and backbone, connection reliability is better, and for low-voltage cable or communication cable, is welded on the selection that is inevitable to a certain extent.In order to reduce connection resistance, this programme preferred weld form reduces aging that the joint local overheating causes.
A particular requirement, the thickness of described separator are not less than the thickness of master core 1 separator of described backbone; The thickness of described insulating barrier is not less than the thickness of the master core insulating barrier of described backbone.Certainly, what consider here is the situation that separator and insulating barrier have used original isolated material of current core and insulating material, in order to reach under the situation that is not less than the electric index of current core, selects this technological means.Nature also can adopt isolation performance and insulation property better material, to reduce the size of joint, also is a kind of reasonable selection.
Preferably, totally three layers of described separator box insulating barriers, wherein insulating barrier forms the intermediate layer, and separator forms two-layer in addition, can make reliability of structure better.
Based on above-mentioned pre-branched cable, this programme provides a kind of method, and it may further comprise the steps:
A) precalculated position of backbone is connected the termination with branch line and peels off moulding by connection request;
B) electrically connect backbone and branch line;
C) metallic conductor of exposed backbone and branch line is carried out currently being electrically connected the colligation of the class of insulation to form separator and insulating barrier; And
D) described branch line is connected formed joint 3 with backbone and injects rubber-moulding with the partial protection layer of backbone and branch line.
Said method, those skilled in the art can select or make up following technological means:
Described backbone adopts welding with being connected of branch line, makes to connect resistance less than predetermined resistance.
The moulding of described notes rubber is that the partial protection layer with described joint and backbone and branch line places in a molding chamber, adopts rubber injection machine injection formation rubber cover.Rubber cover has certain rigidity and pliability, is convenient to the layout of connector.
For the ease of making, first colligation first separator of described step c), rubber-coated then insulating barrier twines second separator afterwards, annotates the rubber protective layer at last.
Preferably, described first separator is selected polyester belt for use.
Described polyester belt selects for use heatproof degree grade at 150 ℃ polyurethane tape.
Described second separator is selected nonwoven fabric belts for use.
In order to reach needed isolation effect, the thickness of described second separator is 0.07～0.10mm.
The insulating barrier of described coating is that second third glue is the insulating barrier of main body.
Described notes rubber protective layer is the rubber cover based on haloflex.
Claims (17)
1. pre-branched cable comprises it is characterized in that the branch line (10) and the backbone (8) of electric connection: the metallic conductor that described branch line exhumes in advance with the backbone connecting portion and when being connected is coated with separator (5) and insulating barrier (4); And this pre-branched cable comprises also that described branch line is connected formed joint (3) and backbone and branch line with backbone partial protection layer injection rubber is packaged into one and the protective layer (7) that forms.
2. pre-branched cable according to claim 1 is characterized in that: described branch line is vertically connected on the described backbone.
3. pre-branched cable according to claim 2 is characterized in that: a core (9) of described branch line axially is arranged in order connection along described backbone.
4. pre-branched cable according to claim 3 is characterized in that: described joint integral body is triangular in shape.
5. according to the arbitrary described pre-branched cable of claim 1 to 4, it is characterized in that: the welding of the metallic conductor that is connected to corresponding core of described branch line and backbone.
6. pre-branched cable according to claim 5 is characterized in that: the thickness of described separator is not less than the thickness of the master core of described backbone (1) separator; The thickness of described insulating barrier is not less than the thickness of the master core insulating barrier of described backbone.
7. pre-branched cable according to claim 6 is characterized in that: totally three layers of described separator box insulating barriers, and wherein insulating barrier forms the intermediate layer, and separator forms two-layer in addition.
8. make the method for the described pre-branched cable of claim 1 as described for one kind, it may further comprise the steps:
A) precalculated position of backbone is connected the termination with branch line and peels off moulding by connection request;
B) electrically connect backbone and branch line;
It is characterized in that it is further comprising the steps of:
C) metallic conductor of exposed backbone and branch line is carried out currently being electrically connected the colligation of the class of insulation to form separator and insulating barrier; And
D) described branch line is connected formed joint (3) with backbone and injects rubber-moulding with the partial protection layer of backbone and branch line.
9. method according to claim 8 is characterized in that: backbone is connected the employing welding with the metallic conductor of branch line, makes to connect resistance less than predetermined resistance.
10. method according to claim 8 is characterized in that: described injection rubber-moulding is that the partial protection layer with described joint and backbone and branch line places in a molding chamber, adopts the rubber injection machine injection to form rubber cover.
11. arbitrary according to Claim 8-10 described method is characterized in that: first colligation first separator of described step c), rubber-coated then insulating barrier twines second separator afterwards.
12. method according to claim 11, its feature exists: described first separator is selected polyester belt for use.
13. method according to claim 12 is characterized in that: described polyester belt selects for use heatproof degree grade at 150 ℃ polyurethane tape.
14. method according to claim 11 is characterized in that: the insulating barrier of described coating is that second third glue is the insulating barrier of main body.
15. method according to claim 11 is characterized in that: described protective layer is the rubber cover based on haloflex.
16. method according to claim 11 is characterized in that: described second separator is selected nonwoven fabric belts for use.
17. method according to claim 16 is characterized in that: the thickness of described second separator is 0.07～0.10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010123890 CN101800091A (en) | 2010-03-15 | 2010-03-15 | Pre-branched cable and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010123890 CN101800091A (en) | 2010-03-15 | 2010-03-15 | Pre-branched cable and manufacturing method thereof |
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| CN101800091A true CN101800091A (en) | 2010-08-11 |
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| CN 201010123890 Pending CN101800091A (en) | 2010-03-15 | 2010-03-15 | Pre-branched cable and manufacturing method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544971A (en) * | 2012-02-28 | 2012-07-04 | 洛阳栾川钼业集团股份有限公司 | Heat vulcanization repairing method of cable connector and mould for repairing |
| CN102855983A (en) * | 2012-08-29 | 2013-01-02 | 芜湖航天特种电缆厂 | High temperature air-resisting cable for aviation |
| CN103489520A (en) * | 2013-09-28 | 2014-01-01 | 四川新蓉电缆有限责任公司 | Method for manufacturing anti-disengaging pre-forking copper core cable |
| CN106117826A (en) * | 2016-07-26 | 2016-11-16 | 江苏亨通电力电缆有限公司 | The super soft fireproof cable of pre-branch and manufacturing process thereof |
| CN106188889A (en) * | 2016-07-26 | 2016-12-07 | 江苏亨通电力电缆有限公司 | Fire-type modified EPT rubber cable material and preparation technology thereof |
| CN106188888A (en) * | 2016-07-26 | 2016-12-07 | 江苏亨通电力电缆有限公司 | Low-smoke and flame retardant type ethylene propylene diene rubber insulant |
| CN106432920A (en) * | 2016-07-26 | 2017-02-22 | 江苏亨通电力电缆有限公司 | Anticorrosion pre-branched fire-resistant cable |
| US9774179B1 (en) | 2017-03-30 | 2017-09-26 | Ford Global Technologies, Llc | Fused T-splice wiring |
| CN112233855A (en) * | 2020-10-15 | 2021-01-15 | 北京特种机械研究所 | Bifurcated cable harness manufacturing method applied to ground guarantee of unmanned aerial vehicle |
| CN113517091A (en) * | 2021-04-15 | 2021-10-19 | 白银有色长通电线电缆有限责任公司 | Workstation is used in production of branch cable in advance |
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| GB851420A (en) * | 1958-03-31 | 1960-10-19 | Enfield Cables Ltd | Improvements in or relating to electric cable joints |
| JP2001229995A (en) * | 2000-02-17 | 2001-08-24 | Yukita Electric Wire Co Ltd | Molding structure and molding method of cable branch |
| CN1534691A (en) * | 2003-03-30 | 2004-10-06 | 九川电器有限公司 | Armoured premade multi core branching cable |
| CN201196981Y (en) * | 2008-04-12 | 2009-02-18 | 吴荣裕 | Cable assembly for conference system engineering installation |
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2010
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB851420A (en) * | 1958-03-31 | 1960-10-19 | Enfield Cables Ltd | Improvements in or relating to electric cable joints |
| JP2001229995A (en) * | 2000-02-17 | 2001-08-24 | Yukita Electric Wire Co Ltd | Molding structure and molding method of cable branch |
| CN1534691A (en) * | 2003-03-30 | 2004-10-06 | 九川电器有限公司 | Armoured premade multi core branching cable |
| CN201196981Y (en) * | 2008-04-12 | 2009-02-18 | 吴荣裕 | Cable assembly for conference system engineering installation |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544971A (en) * | 2012-02-28 | 2012-07-04 | 洛阳栾川钼业集团股份有限公司 | Heat vulcanization repairing method of cable connector and mould for repairing |
| CN102544971B (en) * | 2012-02-28 | 2014-07-16 | 洛阳栾川钼业集团股份有限公司 | Heat vulcanization repairing method of cable connector and mould for repairing |
| CN102855983A (en) * | 2012-08-29 | 2013-01-02 | 芜湖航天特种电缆厂 | High temperature air-resisting cable for aviation |
| CN102855983B (en) * | 2012-08-29 | 2016-08-03 | 芜湖航天特种电缆厂 | A kind of high temperature air-resisting cable for aviation |
| CN103489520A (en) * | 2013-09-28 | 2014-01-01 | 四川新蓉电缆有限责任公司 | Method for manufacturing anti-disengaging pre-forking copper core cable |
| CN103489520B (en) * | 2013-09-28 | 2015-12-23 | 四川新蓉电缆有限责任公司 | A kind of slip-off preventing pays the preparation method of copper core cable in advance |
| CN106117826A (en) * | 2016-07-26 | 2016-11-16 | 江苏亨通电力电缆有限公司 | The super soft fireproof cable of pre-branch and manufacturing process thereof |
| CN106188889A (en) * | 2016-07-26 | 2016-12-07 | 江苏亨通电力电缆有限公司 | Fire-type modified EPT rubber cable material and preparation technology thereof |
| CN106188888A (en) * | 2016-07-26 | 2016-12-07 | 江苏亨通电力电缆有限公司 | Low-smoke and flame retardant type ethylene propylene diene rubber insulant |
| CN106432920A (en) * | 2016-07-26 | 2017-02-22 | 江苏亨通电力电缆有限公司 | Anticorrosion pre-branched fire-resistant cable |
| US9774179B1 (en) | 2017-03-30 | 2017-09-26 | Ford Global Technologies, Llc | Fused T-splice wiring |
| CN112233855A (en) * | 2020-10-15 | 2021-01-15 | 北京特种机械研究所 | Bifurcated cable harness manufacturing method applied to ground guarantee of unmanned aerial vehicle |
| CN112233855B (en) * | 2020-10-15 | 2022-04-15 | 北京特种机械研究所 | Bifurcated cable harness manufacturing method applied to ground guarantee of unmanned aerial vehicle |
| CN113517091A (en) * | 2021-04-15 | 2021-10-19 | 白银有色长通电线电缆有限责任公司 | Workstation is used in production of branch cable in advance |
| CN113517091B (en) * | 2021-04-15 | 2023-01-03 | 白银有色长通电线电缆有限责任公司 | Workstation is used in production of branch cable in advance |
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Open date: 20100811 |