CN103489520A - Method for manufacturing anti-disengaging pre-forking copper core cable - Google Patents
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Abstract
The invention discloses a method for manufacturing an anti-disengaging pre-forking copper core cable, and belongs to the field of cables, wherein the anti-disengaging pre-forking copper core cable is one of pre-forking cable terminals. According to the method, a conductor cable core of a main cable and a conductor cable core of a branch cable are formed in a pressing fit mode, after an insulation belt is wound and injection molding is conducted, the pre-forking copper core cable is obtained, then a net-shaped hanger is installed and a finished product is obtained. By the adoption of the method, the anti-disengaging pre-forking copper core cable has the advantages of being simple in end processing structure, safe, reliable, convenient to assemble and disassemble, firm in hoisting, good in sealing performance, resistant to high temperature and corrosion, and capable of preventing fire and explosion; insulation resistance cannot be lowered by moisture, and the anti-disengaging pre-forking copper core cable can be widely used in various industrial buildings and civil buildings.
Description
Technical field
The invention discloses a kind of slip-off preventing and pay the preparation method of copper core cable in advance, belong to field of cables, belong to a kind of of pre-branched cable terminal.
Background technology
Outer protective sleeve, primary insulation on one section backbone cable that the current method of manufacturing the rubber pre-branched cable is first strip off select location, make its metallic conductor exposed; Again the branch line cable is peelled off to sheath, insulation, it is crimped on the backbone cable metal conductor of peelling off insulation after exposing cable end.Described crimping is carried out the crimping moulding by the conductor connector, and this moulding process finally carries out compression molding to the joint of this crimping moulding with vulcanizing press.This method is due to the needs vulcanizing press, and branch line is the crimping moulding with being connected of backbone, and not only difficulty is large, and the connection resistance of crimping moulding is large, and useful life is short.And the joint outward appearance is easily uneven, rough, reliability, consistency are poor, and the junction bonding strength of protective layer is low in addition, are difficult to use for a long time in wet environment.The method production cycle of mold pressing is long, and the rubber-covered employing of this moulding process of application at present is the material that natural/butylbenzene is main body simultaneously, and its insulation property, well below second the third electro-insulating rubber, are difficult to guarantee the insulation property of rubber pre-branched cable.
Thereby, in numerous cable use occasions, the joint of backbone cable and branch line cable is processed, just become the outstanding problem in the construction of supply and distribution networking.The rubber pre-branched cable is used widely in buried, middle-high building, tunnel, mine, airport, harbour and modernization Standard Factory Room, but, because of the problems referred to above, enables and should be subject to certain restrictions.
In order to improve joint efficiency, a kind of pre-branched cable manufacture method that fastens sealing by the metal case has also appearred at present, the method first is connected backbone with branch line, then do insulation and process, and fastens and be fastenedly connected by described metal case afterwards to form.Because 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, under rugged environment, serviceability is poor.
Subsequently, occurred that the patent No. is 201010123890.7, the patented technology scheme that denomination of invention is pre-branched cable and preparation method thereof, the technical scheme of this patent is as follows:
A kind of pre-branched cable, comprise 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 while being connected is coated with separator and insulating barrier; And this pre-branched cable also comprises that the partial protection layer injection rubber packaging that described branch line is connected to formed joint and backbone and branch line with backbone is integral and the protective layer that forms.Described branch line is vertically connected on described backbone.A core of described branch line axially is arranged in order connection along described backbone.Described joint integral body is triangular in shape.The welding of the metallic conductor that is connected to corresponding core of described branch line and backbone.The thickness of described separator is 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.Totally three layers of described separator box insulating barriers, wherein insulating barrier forms intermediate layer, and separator forms separately two-layer.A) moulding is peeled off to by connection request in the precalculated position of backbone and branch line connection end; B) be electrically connected backbone and branch line; It is characterized in that it is further comprising the steps of: c) colligation of the current electrical connection class of insulation is carried out to form separator and insulating barrier in the metallic conductor of exposed backbone and branch line; And d) described branch line is connected with backbone together with the partial protection layer of formed joint and backbone and branch line and injects rubber-moulding.Backbone is connected the employing welding with the metallic conductor of branch line, make contact resistance be less than predetermined resistance.Described injection rubber-moulding is that the partial protection layer of described joint and backbone and branch line is placed in a molding chamber, adopts the rubber injection machine injection to form rubber cover.Described step c) first colligation the first separator, then rubber-coated insulating barrier, be wound around the second separator afterwards.Described the first separator is selected polyester belt.Described polyester belt selects heatproof degree grade at the polyurethane tape of 150 ℃.The insulating barrier of described coating is the insulating barrier that second the third glue is main body.Described protective layer is to take the rubber cover that haloflex is main body.Described the second separator is selected nonwoven fabric belts.The thickness of described the second separator is 0.07～0.10mm.
Above-mentioned patented technology scheme, although substantially solved the bad defect of the insulation property of pre-branched cable, but adopted the mode of welding due to it on joint, strengthened technology difficulty, and then affected construction and the scope of application, for field operation has strengthened difficulty, and, this technical scheme, do not solve the problem of tune.
Summary of the invention
The invention provides a kind of applied widely, termination is easy to lifting, that process termination is simple in structure, safe and reliable, mounting or dismounting are convenient, clamp firmly, good seal, high temperature resistant, corrosion-resistant, fire prevention, explosion-proof characteristics, can be because of the moist insulation resistance, cable applied widely of reducing.
For realizing above-mentioned technical purpose, technical scheme of the present invention is as follows:
A kind of slip-off preventing is paid the preparation method of copper core cable in advance, comprises main cable, at least one pole cable, and copper clasp, it is characterized in that, in accordance with the following steps preparation:
A) respectively the end of the middle part of main cable and branch cable is divested to insulation and sheath, make the conductor thread core of each cable exposed, and the length that each cable core is exposed is suitable, that grow up short section of 10～15cm of the sheath skin transverse cutting that divests on main cable is stand-by;
B) respectively by the core of branch cable exposure and the laminating of the exposed core of main cable, then use copper clasp by core sticking part card and, cable connecting part is put into to crimp, starting pressure machine, the copper clasp of pressing;
C) first wrapped mica tape or insulating tape in copper ring connector and exposed core position, and then lapped insulation adhesive tape, water-proof self-adhesion band, insulating tape successively;
D) by A) the sheath suitcase that obtains of step is rolled on the insulated wire cores of each main cable, and the cutting knife mouth is outwardly;
E) with nylon cable tie or Halogen band, the coupling part of main cable and branch cable is evenly tightened;
F) coat branch's connector with clean plastic film, with packaging film, main cable and branch cable tightly are wound around, take in together take-up reel to be injected;
G) by F) branch's head part of the wrapped moulding of crimping that obtains inserts injection molding machine, selects corresponding mold injection molding;
H) by G) the injection molding branch head that obtains is placed on water tank, wraps up whole branch connector with the cloth of immersion and carries out the water-bath cooling, takes infantees after typing off; Each insulated wire cores of end is separated, with the respective color insulating tape, be wound around termination, then with thermoplastic cap sealing termination;
I) by H) top ends of the main cable of paying copper core cable in advance that obtains opens otch one on axially, push sheath aside, then put thermoplastic tube and heating makes its contraction on each insulated wire cores, then pyrocondensation is emitted and heat and makes its contraction on the core termination point casing, obtains the cable of termination good seal;
J) 1 in the middle of core, a plastic cement chock is set, and tightly wraps with 5 layers of insulating tape.
K) recover sheath to home position, tighten with inhibiting tape, must arrive termination and be tapered cable
;
L) by K) step the cable end socket heat-shrink tube the heating that obtain make its contraction, then puts that pyrocondensation is emitted and heat shrink;
M) the guard suspension hook is installed on heat-shrink tube, the netted outside socket larynx hoop that hangs head, fastening guard suspension hook, obtain pre-branched cable;
N) check the cable break-make, obtain the pre-branched cable finished product.
Copper clasp of the present invention is " U " type copper ring that copper bar obtains after by die mould.
F of the present invention) injection pressure of step is 10-20Mpa, and temperature is 110-150 degree centigrade, and preheating injection time is 10-45 minute.
H of the present invention) the water-bath time of step is 5～15 minutes, described C) insulating tape is wound around 3～6 layers in step.
I of the present invention) incision length in step is 300～350mm.
J of the present invention) chock in step is that the long 100mm of being, the wide 20mm of being, height are the plastic cement cuboid of 20mm.
K of the present invention) inhibiting tape in is that the rate of putting up is 50%, and coiling length is 400 ± 10mm.
L of the present invention) heat-shrink tube in has good heat-shrinkable, and its length is 550 ± 10mm.
M of the present invention) the larynx hoop in step is 3, respectively on fastening guard suspension hook.
The installation of netted suspension hook is as follows:
Described guard suspension hook is end opening one an end sealing, suspension hook is positioned at the outside of blind end, also comprise the insulated wire cores heat-shrink tube, insulated wire cores pyrocondensation cap, described insulated wire cores heat-shrink tube is socketed on every eradication edge core, insulated wire cores pyrocondensation cap is arranged on the end of insulated wire cores, and the end of cable is stretched into fixing from the openend of described guard suspension hook.Also comprise the insulation filling piece, described collets make the cable inside end be tapered between insulated wire cores.Also comprise the guard inwall that is arranged on the guard suspension hook and the insulation wearing layer between the cable outer wall.Described insulation wearing layer is cable core pyrocondensation cap and cable core heat-shrink tube, and cable core pyrocondensation cap is arranged on the end of cable, and the cable core heat-shrink tube is socketed in the outer wall of cable.Also comprise at least one larynx hoop, described larynx hoop is fastened on the guard outside of guard suspension hook 2.Described larynx hoop 6 is 3.
Because the present invention has adopted technique scheme and technique, there is following beneficial effect:
The first, because dry cable core and branch cable core all adopt copper material, clasp has also adopted identical copper material, has greatly guaranteed the electric conductivity of cable after the moulding; And copper clasp is " U " shape, has facilitated fastening;
The second, copper clasp is fastened and presses moulding, make two cores can be better, closely combine, effectively avoided loosening because of junction, contact resistance is excessive and short circuit that cause is burnt;
The 3rd, adopt the rectangular chock of plastic cement, make cable end tapered, allow the netted head that hangs under the effect of larynx hoop, fixing firmly, prevented from hanging head and come off;
The 4th, during branch, the sheath peeled off, for being wrapped in the insulated wire cores of each main cable, and the cutting knife mouth is outwardly; Not only saved cost, and, the insulation property of cable increased;
The 5th, the chock specification adopts: long for 100mm, wide be 20mm, the high 20mm of being, just can adapt to the inside of main cable, make, end is tapered;
The 6th, the employing injection pressure is 10-20Mpa, and temperature is 110-150 degree centigrade, and the technological parameter that preheating injection time is 10-45 minute not only can meet common pre-branched cable but also can meet the moulding of low smoke and zero halogen pre-branched cable branch head;
Seven, the water-bath time is 5～15 minutes, can rapidly branch's injection molding body ground temperature will be guaranteed to branch's head shapes to normal temperature effectively from degree more than 100, and then guarantee the electrical insulation properties of branch's head;
Eight, the insulated wire cores of branch cable lifting end and cable core have all adopted heat-shrinkable T bush and pyrocondensation cap packing, can effectively guarantee the electrical insulation properties of an insulated wire cores, and then guarantee that the whole head that hangs has good electric insulating quality;
Nine, the length setting at the top ends axially open of main cable is that incision length is 300～350mm, the heat-shrinkable T bush that length of fit is 550 mm well and netted installation of hanging head;
figure of description
?fig. 1 is the schematic diagram that cable of the present invention is paid joint in advance;
The suspension hook that Fig. 2 is cable end of the present invention is dissected schematic diagram;
The suspension hook schematic diagram that Fig. 3 is cable end of the present invention;
Fig. 4 is one of installation of the present invention figure.
In figure: (1) main cable core, (2) guard suspension hook, (3) collets, (4) insulated wire cores heat-shrink tube, (5) insulated wire cores pyrocondensation cap, (6) larynx hoop, (7) main cable, (8) cable core pyrocondensation cap, (9) cable core heat-shrink tube, (10) pole cable, (11) copper clasp.
Embodiment
A kind of slip-off preventing is paid the preparation method of copper core cable in advance, comprises main cable, at least one pole cable, and copper clasp, it is characterized in that, in accordance with the following steps preparation:
A) respectively the end of the middle part of main cable and branch cable is divested to insulation and sheath, make the conductor thread core of each cable exposed, and the exposed length of each cable core is suitable, stand-by by short section of the sheath skin transverse cutting growth 10cm that divests on main cable;
B) respectively by the core of branch cable exposure and the laminating of the exposed core of main cable, then use copper clasp by core sticking part card and, cable connecting part is put into to crimp, starting pressure machine, the copper clasp of pressing;
C) first wrapped mica tape or insulating tape in copper ring connector and exposed core position, and then lapped insulation adhesive tape, water-proof self-adhesion band, insulating tape successively;
D) by A) the sheath suitcase that obtains of step is rolled on the insulated wire cores of each main cable, and the cutting knife mouth is outwardly;
E) with nylon cable tie or Halogen band, the coupling part of main cable and branch cable is evenly tightened;
F) coat branch's connector with clean plastic film, with packaging film, main cable and branch cable tightly are wound around, take in together take-up reel to be injected;
G) by F) branch's head part of the wrapped moulding of crimping that obtains inserts injection molding machine, selects corresponding mold injection molding;
H) by G) the injection molding branch head that obtains is placed on water tank, wraps up whole branch connector with the cloth of immersion and carries out the water-bath cooling, takes infantees after typing off; Each insulated wire cores of end is separated, with the respective color insulating tape, be wound around termination, then with thermoplastic cap sealing termination;
I) by H) top ends of the main cable of paying copper core cable in advance that obtains opens otch one on axially, push sheath aside, then put thermoplastic tube and heating makes its contraction on each insulated wire cores, then pyrocondensation is emitted and heat and makes its contraction on the core termination point casing, obtains the cable of termination good seal;
J) 1 in the middle of core, a plastic cement chock is set, and tightly wraps with 5 layers of insulating tape.
K) recover sheath to home position, tighten with inhibiting tape, must arrive termination and be tapered cable
;
L) by K) step the cable end socket heat-shrink tube the heating that obtain make its contraction, then puts that pyrocondensation is emitted and heat shrink;
M) the guard suspension hook is installed on heat-shrink tube, the netted outside socket larynx hoop that hangs head, fastening guard suspension hook, obtain pre-branched cable;
N) check the cable break-make, obtain the pre-branched cable finished product.
Copper clasp of the present invention is " U " type copper ring that copper bar obtains after by die mould.
F of the present invention) injection pressure of step is 10Mpa, and temperature is 110 degrees centigrade, and preheating injection time is 10 minutes.
H of the present invention) the water-bath time of step is 5 minutes, described C) insulating tape is wound around 3 layers in step.
I of the present invention) incision length in step is 300mm.
J of the present invention) chock in step is that the long 100mm of being, the wide 20mm of being, height are the plastic cement cuboid of 20mm.
K of the present invention) inhibiting tape in is that the rate of putting up is 50%, and coiling length is 390mm.
L of the present invention) heat-shrink tube in has good heat-shrinkable, and its length is 540mm.
M of the present invention) the larynx hoop in step is 3, respectively on fastening guard suspension hook.
A kind of slip-off preventing is paid the preparation method of copper core cable in advance, comprises main cable, at least one pole cable, and copper clasp, it is characterized in that, in accordance with the following steps preparation:
A) respectively the end of the middle part of main cable and branch cable is divested to insulation and sheath, make the conductor thread core of each cable exposed, and the exposed length of each cable core is suitable, stand-by by short section of the sheath skin transverse cutting growth 15cm that divests on main cable;
B) respectively by the core of branch cable exposure and the laminating of the exposed core of main cable, then use copper clasp by core sticking part card and, cable connecting part is put into to crimp, starting pressure machine, the copper clasp of pressing;
C) first wrapped mica tape or insulating tape in copper ring connector and exposed core position, and then lapped insulation adhesive tape, water-proof self-adhesion band, insulating tape successively;
D) by A) the sheath suitcase that obtains of step is rolled on the insulated wire cores of each main cable, and the cutting knife mouth is outwardly;
E) with nylon cable tie or Halogen band, the coupling part of main cable and branch cable is evenly tightened;
F) coat branch's connector with clean plastic film, with packaging film, main cable and branch cable tightly are wound around, take in together take-up reel to be injected;
G) by F) branch's head part of the wrapped moulding of crimping that obtains inserts injection molding machine, selects corresponding mold injection molding;
H) by G) the injection molding branch head that obtains is placed on water tank, wraps up whole branch connector with the cloth of immersion and carries out the water-bath cooling, takes infantees after typing off; Each insulated wire cores of end is separated, with the respective color insulating tape, be wound around termination, then with thermoplastic cap sealing termination;
I) by H) top ends of the main cable of paying copper core cable in advance that obtains opens otch one on axially, push sheath aside, then put thermoplastic tube and heating makes its contraction on each insulated wire cores, then pyrocondensation is emitted and heat and makes its contraction on the core termination point casing, obtains the cable of termination good seal;
J) 1 in the middle of core, a plastic cement chock is set, and tightly wraps with 5 layers of insulating tape.
K) recover sheath to home position, tighten with inhibiting tape, must arrive termination and be tapered cable
;
L) by K) step the cable end socket heat-shrink tube the heating that obtain make its contraction, then puts that pyrocondensation is emitted and heat shrink;
M) the guard suspension hook is installed on heat-shrink tube, the netted outside socket larynx hoop that hangs head, fastening guard suspension hook, obtain pre-branched cable;
N) check the cable break-make, obtain the pre-branched cable finished product.
Copper clasp of the present invention is " U " type copper ring that copper bar obtains after by die mould.
F of the present invention) injection pressure of step is 20Mpa, and temperature is 150 degrees centigrade, and preheating injection time is 10-45 minute.
H of the present invention) the water-bath time of step is 15 minutes, described C) insulating tape is wound around 6 layers in step.
I of the present invention) incision length in step is 350mm.
J of the present invention) chock in step is that the long 100mm of being, the wide 20mm of being, height are the plastic cement cuboid of 20mm.
K of the present invention) inhibiting tape in is that the rate of putting up is 50%, and coiling length is 410mm.
L of the present invention) heat-shrink tube in has good heat-shrinkable, and its length is 560mm.
M of the present invention) the larynx hoop in step is 3, respectively on fastening guard suspension hook.
A kind of slip-off preventing is paid the preparation method of copper core cable in advance, comprises main cable, at least one pole cable, and copper clasp, it is characterized in that, in accordance with the following steps preparation:
A) respectively the end of the middle part of main cable and branch cable is divested to insulation and sheath, make the conductor thread core of each cable exposed, and the length that each cable core is exposed is suitable, stand-by by short section of the sheath skin transverse cutting growth 12.5cm that divests on main cable;
B) respectively by the core of branch cable exposure and the laminating of the exposed core of main cable, then use copper clasp by core sticking part card and, cable connecting part is put into to crimp, starting pressure machine, the copper clasp of pressing;
C) first wrapped mica tape or insulating tape in copper ring connector and exposed core position, and then lapped insulation adhesive tape, water-proof self-adhesion band, insulating tape successively;
D) by A) the sheath suitcase that obtains of step is rolled on the insulated wire cores of each main cable, and the cutting knife mouth is outwardly;
E) with nylon cable tie or Halogen band, the coupling part of main cable and branch cable is evenly tightened;
F) coat branch's connector with clean plastic film, with packaging film, main cable and branch cable tightly are wound around, take in together take-up reel to be injected;
G) by F) branch's head part of the wrapped moulding of crimping that obtains inserts injection molding machine, selects corresponding mold injection molding;
H) by G) the injection molding branch head that obtains is placed on water tank, wraps up whole branch connector with the cloth of immersion and carries out the water-bath cooling, takes infantees after typing off; Each insulated wire cores of end is separated, with the respective color insulating tape, be wound around termination, then with thermoplastic cap sealing termination;
I) by H) top ends of the main cable of paying copper core cable in advance that obtains opens otch one on axially, push sheath aside, then put thermoplastic tube and heating makes its contraction on each insulated wire cores, then pyrocondensation is emitted and heat and makes its contraction on the core termination point casing, obtains the cable of termination good seal;
J) 1 in the middle of core, a plastic cement chock is set, and tightly wraps with 5 layers of insulating tape.
K) recover sheath to home position, tighten with inhibiting tape, must arrive termination and be tapered cable
;
L) by K) step the cable end socket heat-shrink tube the heating that obtain make its contraction, then puts that pyrocondensation is emitted and heat shrink;
M) the guard suspension hook is installed on heat-shrink tube, the netted outside socket larynx hoop that hangs head, fastening guard suspension hook, obtain pre-branched cable;
N) check the cable break-make, obtain the pre-branched cable finished product.
Copper clasp of the present invention is " U " type copper ring that copper bar obtains after by die mould.
F of the present invention) injection pressure of step is 15Mpa, and temperature is 130 degrees centigrade, and preheating injection time is 35 minutes.
H of the present invention) the water-bath time of step is 10 minutes, described C) insulating tape is wound around 5 layers in step.
I of the present invention) incision length in step is 320mm.
J of the present invention) chock in step is that the long 100mm of being, the wide 20mm of being, height are the plastic cement cuboid of 20mm.
K of the present invention) inhibiting tape in is that the rate of putting up is 50%, and coiling length is 410mm.
L of the present invention) heat-shrink tube in has good heat-shrinkable, and its length is 560mm.
M of the present invention) the larynx hoop in step is 3, respectively on fastening guard suspension hook.
Claims (9)
1. the preparation method that slip-off preventing is paid copper core cable in advance, comprise main cable, at least one pole cable, and copper clasp, it is characterized in that, in accordance with the following steps preparation:
A) respectively the end of the middle part of main cable and branch cable is divested to insulation and sheath, make the conductor thread core of each cable exposed, and the length that each cable core is exposed is suitable, that grow up short section of 10～15cm of the sheath skin transverse cutting that divests on main cable is stand-by;
B) respectively by the core of branch cable exposure and the laminating of the exposed core of main cable, then use copper clasp by core sticking part card and, cable connecting part is put into to crimp, starting pressure machine, the copper clasp of pressing;
C) first wrapped mica tape or insulating tape in copper ring connector and exposed core position, and then lapped insulation adhesive tape, water-proof self-adhesion band, insulating tape successively;
D) by A) the sheath suitcase that obtains of step is rolled on the insulated wire cores of each main cable, and the cutting knife mouth is outwardly;
E) with nylon cable tie or Halogen band, the coupling part of main cable and branch cable is evenly tightened;
F) coat branch's connector with clean plastic film, with packaging film, main cable and branch cable tightly are wound around, take in together take-up reel to be injected;
G) by F) branch's head part of the wrapped moulding of crimping that obtains inserts injection molding machine, selects corresponding mold injection molding;
H) by G) the injection molding branch head that obtains is placed on water tank, wraps up whole branch connector with the cloth of immersion and carries out the water-bath cooling, takes infantees after typing off; Each insulated wire cores of end is separated, with the respective color insulating tape, be wound around termination, then with thermoplastic cap sealing termination;
I) by H) top ends of the main cable of paying copper core cable in advance that obtains opens otch one on axially, push sheath aside, then put thermoplastic tube and heating makes its contraction on each insulated wire cores, then pyrocondensation is emitted and heat and makes its contraction on the core termination point casing, obtains the cable of termination good seal;
J) 1 in the middle of core, a plastic cement chock is set, and tightly wraps with 5 layers of insulating tape;
?k) recover sheath to home position, tighten with inhibiting tape, must arrive termination and be tapered cable
;
L) by K) step the cable end socket heat-shrink tube the heating that obtain make its contraction, then puts that pyrocondensation is emitted and heat shrink;
M) the guard suspension hook is installed on heat-shrink tube, the netted outside socket larynx hoop that hangs head, fastening guard suspension hook, obtain pre-branched cable;
N) check the cable break-make, obtain the pre-branched cable finished product.
2. the preparation method that a kind of slip-off preventing according to claim 1 is paid copper core cable in advance, is characterized in that, described copper clasp is " U " type copper ring that copper bar obtains after by die mould.
3. the preparation method that a kind of slip-off preventing according to claim 1 and 2 is paid copper core cable in advance, is characterized in that, described F) injection pressure of step is 10-20Mpa, and temperature is 110-150 degree centigrade, and preheating injection time is 10-45 minute.
4. the preparation method that a kind of slip-off preventing according to claim 3 is paid copper core cable in advance, is characterized in that, described H) water-bath time of step is 5～15 minutes, described C) insulating tape is wound around 3～6 layers in step.
5. the preparation method that a kind of slip-off preventing according to claim 4 is paid copper core cable in advance, is characterized in that, described I) incision length in step is 300～350mm.
6. the preparation method that a kind of slip-off preventing according to claim 5 is paid copper core cable in advance, is characterized in that, described J) chock in step be long for 100mm, wide for 20mm, height be the plastic cement cuboid of 20mm.
7. the preparation method that a kind of slip-off preventing according to claim 6 is paid copper core cable in advance, is characterized in that, described K) in inhibiting tape be that the rate of putting up is 50%, coiling length is 400 ± 10mm.
8. the preparation method that a kind of slip-off preventing according to claim 7 is paid copper core cable in advance, is characterized in that, described L) in heat-shrink tube there is good heat-shrinkable, its length is 550 ± 10mm.
9. the preparation method that a kind of slip-off preventing according to claim 8 is paid copper core cable in advance, is characterized in that, described M) larynx hoop in step is 3, respectively on fastening guard suspension hook.
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| CN105427924A (en) * | 2015-12-23 | 2016-03-23 | 山东华凌电缆有限公司 | Long-lifetime ready-made branch cable and production method thereof |
| CN107942440A (en) * | 2018-01-02 | 2018-04-20 | 任丘市志强塑料制品有限公司 | A kind of mini optical fibre heat-shrink tube and its production technology |
| CN108010639A (en) * | 2018-01-02 | 2018-05-08 | 四川新蓉电缆有限责任公司 | A kind of first-born production. art of flexible mineral insulation fire prevention pre-branched cable branch |
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| CN107942440B (en) * | 2018-01-02 | 2024-01-30 | 任丘市志强塑料制品有限公司 | Miniature optical fiber heat shrinkage tube and production process thereof |
| CN114300913A (en) * | 2022-01-05 | 2022-04-08 | 四川新蓉电缆有限责任公司 | Processing method of injection-molding-free pre-branch connecting body |
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