CN105655038A - Fireproof cable and production process thereof - Google Patents
Fireproof cable and production process thereof Download PDFInfo
- Publication number
- CN105655038A CN105655038A CN201610220676.0A CN201610220676A CN105655038A CN 105655038 A CN105655038 A CN 105655038A CN 201610220676 A CN201610220676 A CN 201610220676A CN 105655038 A CN105655038 A CN 105655038A
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- Prior art keywords
- cable
- wire
- aluminum pipe
- aluminium bar
- fireproof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
Abstract
The invention relates to a fireproof cable and a production process thereof and belongs to the technical field of cable machining. The fireproof cable comprises a protective sheath and a cable core arranged in the protective sheath, wherein the cable core comprises a plurality of cable units which are covered with a winding layer to form a whole body; each cable unit comprises a plastic insulating layer, an aluminum pipe and a shielding layer, which cover the outer part of a conductive core in sequence from inside to outside; mineral fireproof materials are filled between the cable units and between the cable units and the winding layer; the conducive cores are arranged in the cable units; and the mineral fireproof materials are prepared by mixing and proportioning the following components in percentage by mass: 60%-70% of magnesium hydroxide, 3%-8% of calcium powder, 2%-5% of argil and 5%-30% of an adhesive; and the fire-resistant time is relatively long. The fireproof cable is prepared through processes of wiredrawing and stranding, extruding the insulating layer, molding and extruding the aluminum pipe, wrapping the shielding layer, extruding the mineral fireproof materials and covering the winding layer, covering the protective sheath and the like; and a machining process is high in automation degree, time and labor are saved, so that the cost can be reduced; and the quality of products is relatively high and keeps stable.
Description
Technical field
The invention belongs to cable processing technique field, be specifically related to a kind of fireproof cable and production technology thereof.
Background technology
Cable is for electrically connected circuit in building, there is the fireproof cable with fire protecting performance in existing cable, this kind of cable includes multiple wires of outer protective jacket and inside, the outside of wire is additionally provided with and is able to play insulation, the protective layer of protection and shielding action, and fire proofing material or refractory material also can be set between wire, the time is used for cable when extending fire, but the fire-resistant effect of fire proofing material owing to filling in cable is bad, other protective layers in cable can not bear high temperature, cable arise that within the very short time of concrete on fire resistance increase cause can not normal behaviour in service, even blow non-serviceable situation, especially at the skyscraper using elevator, need to use instrument to maintain the hospital of patient vitals and some relations country and the properly functioning place of the people's livelihood, if had a power failure, mean irremediable loss, therefore for ensureing instrument, personnel and the intact of other important objects are withdrawn and protect, need a kind of fireproof cable that can use the long period after fire occurs of research and development.
Summary of the invention
Instant invention overcomes the shortcoming and defect that existing cable exists, provide a kind of fireproof cable and production technology thereof, mineral fireprotection layer fire resistance period in this fireproof cable is long, security context can be provided by conductive unit within cable, during for breaking out of fire, the normal power-up of long period provides guarantee, and the auto-processes degree that relates to is high, save substantial amounts of manually, production efficiency significantly improves, and the quality of the fireproof cable finished product of production is better and quality is relatively stable.
The concrete technical scheme of the present invention is:
A kind of fireproof cable, it includes the cable core of oversheath and inside thereof, cable core includes wrapping up, with winding layer, the multiple cable unit being integrated, mineral fire proofing material all it is filled with between cable unit and between cable unit and winding layer, cable unit arranges conductive core, key point is, the constituent of described mineral fire proofing material includes the binding agent carrying out the magnesium hydroxide of 60-70% of mixing match, the calcium powder of 3-8%, the potter's clay of 2-5% and 25-30% according to mass percent.
Described cable unit includes being wrapped in successively from inside to outside the plastic insulating layer outside conductive core, aluminum pipe and screen layer, and described winding layer is that mica tape is Wrapping formed, and oversheath is that outer surface presses threaded copper pipe sheath.
The constituent of described mineral fire proofing material include according to mass percent carry out proportioning 65% magnesium hydroxide, the calcium powder of 5%, the potter's clay of 3% and 27% binding agent.
The constituent of described mineral fire proofing material include according to mass percent carry out proportioning 70% magnesium hydroxide, the calcium powder of 3%, the potter's clay of 2% and 25% binding agent.
The production technology of the fireproof cable of configuration as described above, key point is, described production technology comprises the following steps:
A, wire drawing and twisted wire
With mould, metal stock is carried out wire drawing, form the satisfactory conductive filament of diameter, then many conductive filaments are carried out strand system, forms conductive core;
B, extrusion insulating barrier
Outside conductive core, it is coated with one layer of plastic insulating layer by extrusion molding mode, obtains wire;
C, aluminum pipe molding and extrusion
Prepare required aluminium bar, aluminium bar and wire are sent in aluminum pipe formation system, finally prepares the wire having aluminum pipe to wrap up;
D, lapped shielding layer
At the outside lapped shielding layer of aluminum pipe, finally prepare cable unit;
The parcel of e, the extrusion of mineral fire proofing material and winding layer
Cable unit no less than two is combined and sends into fire proofing material extruder, between cable unit and outside cable unit, is stained with mineral fire proofing material, and cable unit is combined through mica tape and is wound up as integrative-structure;
F, oversheath cladding
First, utilize copper sheath forming machine at the outer wrap copper pipe sheath of mica tape, then, embossed at the outer surface of copper pipe sheath by protective metal shell embossing machine, finally obtain fireproof cable finished product.
In described step c, aluminum pipe formation system includes wire organization of supply, aluminium bar organization of supply and the aluminum pipe forming device being connected with both outfans, aluminum pipe forming device outfan is provided with finished product crimping device, described aluminum pipe forming device includes upper end can overturn the melt molding mechanism of the containment vessel opened and inside thereof, the both sides, top of melt molding mechanism are provided with heater, melt molding mechanism includes the wire perforation for wire conveying, it is provided above the melted hole of aluminium bar in wire perforation, the melted upper end, hole of aluminium bar is provided for the aluminium bar import of aluminium bar conveying.
In described step e, fire proofing material extruder includes the rabbling mechanism, extrusion mechanism and the haulage gear that are connected successively, cladding mechanism it is provided with between described extrusion mechanism and haulage gear, cladding mechanism includes cylinder and the drum drive that supporting seat and supporting seat are undertaken being rotatably assorted by bearing, supporting seat upper end is provided with cantilevered axle, bearing is installed in cantilevered axle, is provided with cable transfer hole in the middle part of cantilevered axle, and inner wall of rotary drum is hinged with the cladding roll coil of strip.
In described step f, copper sheath forming machine includes the outfan copper strips coiled body with welder, described copper strips coiled body is the molding die that middle part is provided with copper strip roll curved hole, copper strip roll curved hole includes the bellmouth orifice of leading portion and the straight hole of back segment, the diameter maximum of bellmouth orifice is positioned at outer end, its inner diameter is identical with straight hole diameter, and welder is positioned at straight hole outfan top.
In described step f, protective metal shell embossing machine includes being positioned at the haulage gear driving protective metal shell rectilinear movement supporting on platform, drive rotating mechanism that protective metal shell rotates and be positioned at above protective metal shell the embossing mechanism with push type broach, described embossing mechanism also includes being with female fairlead, fairlead is fixed on support platform by support and is positioned at above protective metal shell, it is provided with external screw thread in the middle part of push type broach to match with the female thread in fairlead, fairlead upper side is provided with installing hole, installing hole is provided with the adjusting lever goed deep within fairlead, adjusting lever outer surface is engaged by arranging helical gear with push type broach outer surface of upper.
The invention has the beneficial effects as follows: the fireproof cable in the present invention is by improving the proportioning of mineral fire proofing material, reach the purpose that fire resistance period extends, fire occurs the normal power supply in place to obtain long powerful guarantee, for personnel escape, illumination search, necessary equipment operation improves technical support, the production of this fireproof cable achieves increasingly automated, equipment automatization production all it is capable of to oversheath embossing operation from twisting conductive core processed, it is greatly saved cost of labor, the mode of automatization's processing avoids the error that manual operation exists, product specification is reached highly consistent, constant product quality is in higher level.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of the fireproof cable that the present invention relates to.
Fig. 2 is the structural representation of aluminum pipe formation system in the present invention.
Fig. 3 is the plan structure schematic diagram of wire organization of supply in Fig. 2.
Fig. 4 is the plan structure schematic diagram of aluminium bar adjusted device and aluminium bar strainer in Fig. 2.
Fig. 5 is the internal structure schematic diagram of aluminium bar haulage gear in Fig. 2.
The structural representation of Tu6Shi Tu2Zhong melt molding mechanism.
Fig. 7 is the cross-sectional view of A-A in Fig. 6.
Fig. 8 is the structural representation of fire proofing material extruder in the present invention.
Fig. 9 is the structural representation being coated with mechanism and haulage gear in fire proofing material extruder.
Figure 10 is the structural representation of copper sheath forming machine in the present invention.
Figure 11 is the top view of Figure 10.
Figure 12 is the structural representation of protective metal shell embossing machine in the present invention.
Figure 13 is the internal structure schematic diagram embossing mechanism in protective metal shell embossing machine.
Figure 14 is the cross-sectional view of B-B in Figure 12.
In accompanying drawing, 1, oversheath, 101, molding die, 102, bellmouth orifice, 103, straight hole, 104, curling supplemental cartridge, 105, fillet, 106, welding gun, 107, slideway, 108, sliding support, 109, copper strips, 2, winding layer, 3, mineral fire proofing material, 301, supporting seat, 302, bearing, 303, cylinder, 304, cantilevered axle, 305, cable transfer hole, 306, the cladding roll coil of strip, 307, articulated stand, 308, drive gear, 309, drive motor, 3010, passive gear ring, 3011, material bin, 3012, auger, 3013, stirring motor, 3014, stirring decelerator, 3015, material extrusion hole, 3016, cable transfer passage, 3017, material extrusion die head, 3018, ball-type attachment chamber, 3019, cable, 3020, mounting groove, 3021, upper transmission band, 3022, lower drive belts, 3023, driving pulley, 3024, fixing roller frame, 3025, liftable roller frame, 3026, telescopic shaft, 3027, cable limited roller, 3028, follower rollers, 3029, clamping brace platform, 4, conductive core, 5, plastic insulating layer, 6, aluminum pipe, 601, containment vessel, 602, heater, 603, wire, 604, wire is bored a hole, and 605, aluminium bar melts hole, and 606, aluminium bar, 607, aluminium bar import, 608, coil of wire, 609, it is vertically directed roller, 6010, horizontally-guided roller, 6011, aluminium bar is rolled up, and 6012, aluminum pipe limited roller, 6013, tuning roller, 601301, stopper slot, 6014, tightener sheave, 601401, gathering sill, 6015, rubber layer, 6016, passive roller, 6017, active roller, 601701, first motor, 601702, second motor, 6018, the curling axle of finished product, 6019, vertical guide wheel, 7, screen layer, 801, embossing supports platform, and 802, protective metal shell, 803, push type broach, 804, fairlead, 805, support, 806, installing hole, 807, adjusting lever, 808, size scale line, 809, guide rail, 8010, sliding seat, 8011, scroll chuck, 8012, rotating shaft, 8013, motor, 8014, decelerator, 8015, oversheath limited roller, 8016, oversheath guide roller, 8017, bar hole, 8018, elastic layer, 8019, locking nut, 8020, handwheel.
Detailed description of the invention
The present invention relates to a kind of fireproof cable and production technology thereof, fireproof cable includes the cable core of oversheath 1 and inside thereof, cable core includes wrapping up, with winding layer 2, the multiple cable unit being integrated, mineral fire proofing material 3 all it is filled with between cable unit and between cable unit and winding layer 2, cable unit arranges conductive core 4, the constituent of described mineral fire proofing material 3 includes the magnesium hydroxide carrying out the 60-70% of mixing match according to mass percent, the calcium powder of 3-8%, the potter's clay of 2-5% and the binding agent of 25-30%, multiple cable unit are wound around parcel together with mineral fire proofing material 3 and are integrated by winding layer 2, its outside oversheath 1 that passes through is protected, this fireproof cable is when producing, by internal conductive core 4 wire-drawing shape, carry out production and processing from inside to outside, eventually form the fireproof cable of said structure.
Specific embodiment, as shown in Figure 1, cable unit in fireproof cable includes the plastic insulating layer 5 being wrapped in successively from inside to outside outside conductive core 4, aluminum pipe 6 and screen layer 7, described winding layer 2 is that mica tape is Wrapping formed, oversheath 1 presses threaded copper pipe sheath for outer surface, the mineral fire proofing material 3 filled between cable unit and between cable unit and winding layer 2, its constituent includes carrying out the magnesium hydroxide of the 65% of proportioning according to mass percent, the calcium powder of 5%, the potter's clay of 3% and the binding agent of 27%, above-mentioned each composition is standby after weighing according to mass ratio, the production technology of fireproof cable structured as described above, described production technology comprises the following steps:
A, wire drawing and twisted wire
With mould, metal stock is carried out wire drawing, form the satisfactory conductive filament of diameter, then many conductive filaments are carried out strand system, forms conductive core 4;
B, extrusion insulating barrier 5
Outside conductive core 4, it is coated with one layer of plastic insulating layer 5 by extrusion molding mode, obtains wire;
C, aluminum pipe 6 molding and extrusion
As shown in Figures 2 to 7, prepare required aluminium bar 606, aluminium bar 606 and wire 603 are sent in aluminum pipe formation system, finally prepare the wire 603 having aluminum pipe (6) to wrap up, aluminum pipe formation system includes wire organization of supply, aluminium bar organization of supply and the aluminum pipe forming device being connected with both outfans, aluminum pipe forming device outfan is provided with finished product crimping device, described aluminum pipe forming device includes upper end can overturn the melt molding mechanism of the containment vessel 601 and inside thereof opened, the both sides, top of melt molding mechanism are provided with heater 602, melt molding mechanism includes the wire perforation 604 for wire 603 conveying, it is provided above the melted hole 605 of aluminium bar in wire perforation 604, the melted upper end, hole 605 of aluminium bar is provided for the aluminium bar import 607 of aluminium bar 606 conveying,
Wire organization of supply includes coil of wire 608 and wire adjusted device, wire adjusted device includes two and is vertically directed roller 609 and an adjacent horizontally-guided roller 6010, wire 603 stretches out through two gaps being vertically directed roller 609 upper surface by horizontally-guided roller 6010, two are vertically directed roller 609 and define the transverse shifting of wire, horizontally-guided roller 6010 limits wire and moves down, achieve the guide function to wire 603, wire 603 is through wire perforation 604 and fixes with finished product winding off spindle 6018 surface, wire 604 entrance points of boring a hole are expand outwardly tubaeform, avoid abrasion and shearing force that wire 603 edge is caused by the import of straight tube shape, drive the second motor and the second decelerator that wire 603 just can be driven to move to finished product curling axle 6018 direction, aluminium bar 606 supplies aluminium bar 606 by aluminium bar organization of supply to aluminum pipe forming device in this process, aluminium bar 606 is coated on wire 603 surrounding and forms the cable with aluminum pipe by aluminum pipe forming device,
Aluminium bar organization of supply includes the aluminium bar volume 6011 that front and back are connected successively, aluminium bar adjusted device, aluminium bar strainer and aluminium bar traction apparatus, aluminium bar traction apparatus outfan is corresponding with aluminium bar import 607, aluminium bar import 607 is set to two, the melted hole 605 of corresponding aluminium bar is two, two melted holes 605 of aluminium bar lay respectively at above the both sides of wire perforation 604, aluminium bar volume 6011 is wound with two volume aluminium bars 606 and carries out the supply of aluminium bar 606 respectively to two aluminium bar imports 607, such setting in the middle part of when can avoid using a thicker aluminium bar 606 heats problem not in place, aluminum liquid under-supply problem when can also avoid using a thinner aluminium bar 606, but also can from both sides, wire 603 be carried out melted cladding respectively, aluminum pipe molding is more uniformly distributed,Described aluminium bar adjusted device includes horizontally disposed neighbouring aluminum pipe limited roller 6012 and tuning roller 6013, tuning roller 6013 surface configuration has two parallel stopper slots 601301, two aluminium bars 606 are each passed through two stopper slots 601301, aluminum pipe limited roller 6012 is positioned at above tuning roller 6013, it is possible to be each defined in corresponding stopper slot 601301 by two aluminium bars 606;
Aluminium bar strainer includes the height tightener sheave 6014 lower than tuning roller 6013, tightener sheave 6014 surface configuration has two parallel gathering sills 601401, for avoiding aligning the time between gathering sill 601401 and tuning roller 6013, be provided with three vertical guide wheels 6019 in the front end of tightener sheave, two gaps of formation are corresponding with two gathering sills 601401 respectively, aluminium bar traction apparatus includes surface and is provided with passive roller 6,016 two groups parallel and the active roller 6017 of rubber layer 6015, gap between active roller 6017 and passive roller 6016 is less than the diameter of aluminium bar 606, two active rollers 6017 are attached by belt, one of them active roller 6017 provides power by the first motor 601701 and the first decelerator 601702, two aluminium bars 606 are clamped traction and are delivered to aluminium bar import 607 place by two groups of active rollers 6017 and passive roller 6016 respectively, in distraction procedure, aluminium bar 606 straightens after the tensioning of tightener sheave 6014, stopper slot 1301, gathering sill 1401, the gap of active roller 6017 and passive roller 6016 formation and aluminium bar import 607 constitute the transfer passage of aluminium bar 606, the upset of containment vessel 601 upper end is opened, high-power microwave is used to be heated after melt molding mechanism being dismantled, then put it in the heater 602 of containment vessel 601 again, containment vessel 601 upper end overturns on heater lid, heater 602 is chosen as low power heater, such setting can save the energy when producing in enormous quantities, heater 602 only serves insulation effect, melt molding mechanism uses stainless steel material, heater 602 makes the temperature of melt molding mechanism be maintained on the fusing point of aluminum, under the fusing point of ferrum, melted aluminum liquid is coated with from both sides to wire 603, in cladding process, aluminum liquid begins to cool down, finished product winding off spindle 6018 draws wire 603 and moves thus being pulled out by the wire 603 with aluminum pipe, aluminum liquid cools down the conductive core 4 of complete formation aluminum pipe parcel gradually in outside distraction procedure,
D, lapped shielding layer 7
At the outside lapped shielding layer 7 of aluminum pipe, prepare cable unit;
The parcel of e, the extrusion of mineral fire proofing material 3 and winding layer 2
As shown in Figure 8 and Figure 9, it is combined the cable unit no less than two forming cable 3019 and sending in fire proofing material extruder, it is stained with mineral fire proofing material 3 between cable unit and outside cable unit, and the cable 3019 with the cable unit combination formation of mineral fire proofing material 3 is wound up as integrative-structure by mica tape; Fire proofing material extruder includes the rabbling mechanism, extrusion mechanism and the haulage gear that are connected successively, cladding mechanism it is provided with between described extrusion mechanism and haulage gear, cladding mechanism includes supporting seat 301 and supporting seat 301 passes through cylinder 303 and the drum drive that bearing 302 carries out being rotatably assorted, supporting seat 301 upper end is provided with cantilevered axle 304, bearing 302 is installed in cantilevered axle 304, it is provided with cable transfer hole 305 in the middle part of cantilevered axle 304, cylinder 303 inwall is hinged with the cladding roll coil of strip 306;
Fire prevention mineral rock selected by mineral fire proofing material 3, including the magnesium hydroxide of carry out proportioning according to mass percent 65%, the calcium powder of 5%, the potter's clay of 3% and the binding agent of 27%, rabbling mechanism is that top is with pan feeding, the auger 3012 of 3011, auger 3012 is driven by stirring motor 3013 and stirring decelerator 3014, put in material bin 3011 after various constituents needed for fire prevention mineral rock are weighed, the outfan of auger 3012 is connected with extrusion mechanism input, extrusion mechanism is the die head 3017 being internally provided with crossing material extrusion hole 3015 and cable transfer passage 3016, cable transfer passage 3016 is through hole, material extrusion hole 3015 is blind hole, both intersections are provided with ball-type attachment chamber 3018, the input of material extrusion hole 3015 is connected with the outfan of rabbling mechanism, stirring and conveying effect through auger 3012, fire proofing material is admitted in the material extrusion hole 3015 of material extrusion die head 3017, cable 3019 is sent in cable transfer passage 3016 and is at the uniform velocity drawn by haulage gear, fire proofing material adheres to chamber 3018 place at ball-type and is uniformly adhered to cable 3019 surrounding, the cable 3019 being attached with fire proofing material is transported to forward in cladding mechanism,
Cable 3019 is delivered in the cable transfer hole 305 in the middle part of cantilevered axle 304, cylinder 303 inwall is fixed with articulated stand 307, the cladding roll coil of strip 306 is installed on articulated stand 307, angle between axis and the axis of cylinder 303 of the cladding roll coil of strip 306 is preferably 3010 degree, drum drive includes outfan and is connected to the drive motor 309 driving gear 308, cylinder 303 excircle is provided with passive gear ring 3010, passive gear ring 3010 and driving gear 308 are meshed, in cable 3019 course of conveying, drive motor 309 starts, passive gear ring 3010 concomitant rotation, cylinder 303 drives the cladding roll coil of strip 306 to rotate, what be wound around on the cladding roll coil of strip 306 is mica tape, fire proofing material outside cable 3019 is coated with by mica tape, two ends, cable transfer hole 305 are all done knuckle and are processed, cable transfer hole 305 outfan is corresponding with haulage gear, haulage gear input is provided with adjusted device, adjusted device includes the follower rollers 3028 of two vertical cable limited rollers 3027 and a level, gap between two cable limited rollers 3027 and a follower rollers 3028 forms the traction passage of cable 3019, cable 3019 enters haulage gear after this traction passage, haulage gear is the clamping brace platform 3029 that middle part is provided with cable clamping mechanism, for being provided with the mounting groove 3020 of cable clamping mechanism in the middle part of clamping brace platform 3029, cable clamping mechanism includes the upper transmission band 3021 and the lower drive belts 3022 that are oppositely arranged up and down, upper transmission is arranged in mounting groove 3020 with 3021 and lower drive belts 3022 each through corresponding driving pulley 3023 and passive belt wheel, lower drive belts 3022 is internally provided with one group of fixing roller frame 3024, upper transmission band 3021 is internally provided with one group of liftable roller frame 3025, liftable roller frame 3025 is by being installed on mounting groove 3020 top with the cylinder of telescopic shaft 3026, liftable roller frame 3025 declines with telescopic shaft 3026, until cable is clamped by upper transmission band 3021 and lower drive belts 3022, cable 3019 moves forward with upper transmission band 3021 and lower drive belts 3022, haulage gear trailing cable 3019 sequentially passes through rabbling mechanism, extrusion mechanism, cladding mechanism carries out corresponding operation, final cable 3019 is attached with fire proofing material evenly around, and also by mica tape, fire proofing material is coated with,Cladding mechanism is set between extrusion mechanism and haulage gear, parcel fire proofing material can be wound around by clad strip, avoid dropping of fire proofing material, and it is coated with mechanism's simple in construction, less costly, without artificial participation, and do not worry that fire proofing material extrudes the problem that drops after being coated with, enforcement for haulage gear provides possibility, the efficiency of whole cable processing also obtained raising, in addition, in extrusion mechanism arrange ball-type attachment chamber can make through cable adhere to fire proofing material evenly around, after greatly reducing extrusion, cable has the situation of exposed region, avoid the generation of fire prevention failure conditions, the cable fire-proof performance produced is more stable,
F, oversheath 1 cladding
First, utilize copper sheath forming machine at the outer wrap copper pipe sheath of mica tape, then, embossed at the outer surface of copper pipe sheath by protective metal shell embossing machine, finally obtain fireproof cable finished product;
As shown in Figure 10 and Figure 11, copper sheath forming machine includes the outfan copper strips coiled body with welder, described copper strips coiled body is the molding die 101 that middle part is provided with copper strip roll curved hole, copper strip roll curved hole includes the bellmouth orifice 102 of leading portion and the straight hole 103 of back segment, the diameter maximum of bellmouth orifice 102 is positioned at outer end, its inner diameter is identical with straight hole 103 diameter, and welder is positioned at straight hole 103 outfan top, copper strips 109 is delivered in bellmouth orifice 102, copper strips moves forward along inwall and is curled into cylindrical shape gradually, bellmouth orifice 102 is provided with curling supplemental cartridge 104, curling supplemental cartridge 104 top is fixing with bellmouth orifice 102 top to be connected, curling supplemental cartridge 104 is on same straight line with straight hole and external diameter is less than straight hole 103 diameter, its internal diameter constitutes the transfer passage of cable, the toughness of curling supplemental cartridge 104 excircle opposing copper strips 109, copper strips moves forward and progresses in straight hole 103 along curling supplemental cartridge 104, cable enters in straight hole 103 through the inside of curling supplemental cartridge 104, curling supplemental cartridge 104 input inner and outer wall is disposed as fillet 105, the fillet 105 of outer wall facilitates the conveying of copper strips, the fillet 105 of inwall makes cable be relatively easy to when entering curling supplemental cartridge 104, and in cable transfer process, it will not be caused scratch and obstruction, outfan at straight hole 103, copper strips 109 is curled into drum, and cable is wrapped in wherein, welder is welding gun 106, straight hole 103 outfan top is provided with vertical slideway 107, slideway 107 is provided with sliding support 108 formed with it and be slidably matched, welding gun 106 is fixed on sliding support 108 outer end, sliding support 108 adjusts position in slideway 107, the copper sheath being enclosed with cable transports out from straight hole 103, outside course of conveying use simultaneously welding gun 106 be subjected to, ultimately form copper sheath, the present invention uses bellmouth orifice to carry out the curling guiding of copper strips, and use auxiliary curling barrel to overcome the toughness of copper strips, make the curling more smooth of copper strips, substantially avoid the phenomenon failed with cans that cannot move ahead of being obstructed occurred in copper strips course of conveying, cable may also pass through in the middle part of auxiliary curling barrel, copper strips curly course carries out the parcel of cable, saves cable and insert the related work of copper sheath, improve the overall processing efficiency of cable,
As shown in Figure 12 to Figure 14, protective metal shell embossing machine includes being positioned at the haulage gear driving protective metal shell 802 rectilinear movement that embossing supports on platform 801, drive rotating mechanism that protective metal shell rotates and be positioned at above protective metal shell 802 the embossing mechanism with push type broach 803, described embossing mechanism also includes being with female fairlead 804, fairlead 804 is fixed on embossing by support 805 and supports on platform 801 and be positioned at above protective metal shell 802, it is provided with external screw thread in the middle part of push type broach 803 to match with the female thread in fairlead 804, fairlead 804 upper side is provided with installing hole 806, installing hole 806 is provided with the adjusting lever 807 goed deep within fairlead 804, adjusting lever 807 outer surface is engaged by arranging helical gear with push type broach 803 outer surface of upper,Haulage gear and rotating mechanism are respectively arranged at two groups of protective metal shell 802 two ends, haulage gear includes being fixed on the guide rail 809 supporting platform 801 upper end, the sliding seat 8010 matched with guide rail 809, sliding seat 8010 lower end is provided with chute and is slidably matched with guide rail 809, rotating mechanism is fixed on sliding seat 8010, rotating mechanism drives protective metal shell 802 one end to be rotated, rotating mechanism includes one end and is provided with the rotating shaft 8012 of scroll chuck 8011, rotating shaft 8012 is by being fixed on sliding seat 8010 upper surface with the bearing of bearing, rotating shaft 8012 is driven by motor 8013 and decelerator 8014, during use, the two ends of protective metal shell 802 are clamped with scroll chuck 8011, motor 8013 and the decelerator 8014 at two ends link, protective metal shell 802 is rotated, the sliding seat 8010 at two ends carries out rectilinear movement synchronized in the same direction along guide rail 809, protective metal shell 802 moves while carrying out the embossing operation of push type broach 803, when larger-diameter protective metal shell 802 is embossed by needs, rotate adjusting lever 807 and carry out the adjustment of overhang, the outer end of adjusting lever 807 is provided with handwheel 8020, rotate handwheel 8020, adjusting lever 807 and push type broach 803 upper end carry out helical gear engagement rotation, push type broach 803 moves up thus adapting to the protective metal shell 802 of major diameter, push type broach 803 side is provided with size scale line 808, size scale line 808 is distributed on push type broach side every 90 degree, observation to size scale line when convenient push type broach 803 rotates, adjusting lever 807 is provided with external screw thread being positioned at the outer surface outside fairlead 802, external screw thread place is provided with locking nut 8019, when adjusting to applicable scale, locking nut 8019 is screwed to the inside, the effect of clamping adjusting lever 807 can be played, push type broach 803 also can be locked therewith, the overhang of push type broach 803 would not change, embossing mechanism both sides are respectively arranged with one group of guiding mechanism, guiding mechanism includes the guide roller 8016 of two vertical oversheath limited rollers 8015 and level being arranged at supporting seat 1 upper surface, supporting seat 801 upper surface is provided with horizontal bar hole 8017, two oversheath limited roller 8015 lower ends are bolted to be fixed in bar hole 8017, protective metal shell 802 when mobile through the upper end in the gap two oversheath limited rollers 8015 and guide roller 8016, oversheath limited roller 8015 and guide roller 8016 outer surface are provided with elastic layer 8018, and the protective metal shell 802 according to different-diameter, can be adapted to by the gap of two oversheath limited rollers 8015 of adjustment in bar hole 8017, when there is, when embossing, the situation that clamping was lost efficacy in protective metal shell, guiding mechanism is it can be avoided that protective metal shell offset direction, and it can be avoided that the injury that caused by protective metal shell sideslip of neighbouring personnel.
Embodiment 2, another kind of effect as mineral fire proofing material becomes component selections preferably, in fireproof cable fill mineral fire proofing material 3 constituent include according to mass percent carry out proportioning 70% magnesium hydroxide, the calcium powder of 3%, the potter's clay of 2% and 25% binding agent, stirred by each composition, mixing forms mineral fire proofing material, energising is normal to use the fireproof cable that this material is filled can ensure under fired state, and the persistent period is not less than 3 hours, it is effectively ensured normal electricity consumption when fire occurs.
Mineral fire proofing material fire resistance period in the present invention is longer, possesses good fire protecting performance, the electricity consumption in place is occurred to provide the time of abundance for fire, the power supply guarantee of necessity is provided for stamping out a fire, particularly in the skyscraper needing dependence elevator to carry out evacuating personnel, also has hospital, frontier defense etc. rely on electric power to maintain the important department of equipment operation, normal power-up after fire generation ensure that personnel's is orderly, effectively withdraw, it also is able to the normal operation ensureing equipment and instrument to ensure patient vitals's safety or frontier defense safety, production technology in the present invention passes through aluminum pipe formation system, fire proofing material extruder, the use of copper sheath forming machine and protective metal shell embossing machine, substantially increase the efficiency of production, save cost of labor, and product quality can obtain stability contorting at high level, disclosure satisfy that the quick production of a large amount of fireproof cable.
Claims (9)
1. a fireproof cable, it includes the cable core of oversheath (1) and inside thereof, cable core includes wrapping up, with winding layer (2), the multiple cable unit being integrated, mineral fire proofing material (3) all it is filled with between cable unit and between cable unit and winding layer (2), cable unit arranges conductive core (4), it is characterised in that: the constituent of described mineral fire proofing material (3) includes the binding agent carrying out the magnesium hydroxide of 60-70% of mixing match, the calcium powder of 3-8%, the potter's clay of 2-5% and 25-30% according to mass percent.
2. a kind of fireproof cable according to claim 1, it is characterized in that: described cable unit includes being wrapped in the outside plastic insulating layer (5) of conductive core (4), aluminum pipe (6) and screen layer (7) from inside to outside successively, described winding layer (2) is Wrapping formed for mica tape, and oversheath (1) presses threaded copper pipe sheath for outer surface.
3. a kind of fireproof cable according to claim 1, it is characterised in that: the constituent of described mineral fire proofing material (3) include according to mass percent carry out proportioning 65% magnesium hydroxide, the calcium powder of 5%, the potter's clay of 3% and 27% binding agent.
4. a kind of fireproof cable according to claim 1, it is characterised in that: the constituent of described mineral fire proofing material (3) include according to mass percent carry out proportioning 70% magnesium hydroxide, the calcium powder of 3%, the potter's clay of 2% and 25% binding agent.
5. the production technology of fireproof cable as claimed in claim 2, it is characterised in that described production technology comprises the following steps:
A, wire drawing and twisted wire
With mould, metal stock is carried out wire drawing, form the satisfactory conductive filament of diameter, then many conductive filaments are carried out strand system, forms conductive core (4);
B, extrusion insulating barrier (5)
By extrusion molding mode conductive core (4) one layer of plastic insulating layer (5) of outside cladding, obtain wire (603);
C, aluminum pipe (6) molding and extrusion
Prepare required aluminium bar (606), aluminium bar (606) and wire (603) are sent in aluminum pipe formation system, finally prepares the wire (603) having aluminum pipe (6) to wrap up;
D, lapped shielding layer (7)
The outside lapped shielding layer (7) of aluminum pipe (6), finally prepare cable unit;
The parcel of e, the extrusion of mineral fire proofing material (3) and winding layer (2)
Cable unit no less than two is combined and sends into fire proofing material extruder, between cable unit and outside cable unit, is stained with mineral fire proofing material (3), and cable unit is combined through mica tape and is wound up as integrative-structure;
F, oversheath (1) cladding
First, utilize copper sheath forming machine at the outer wrap copper pipe sheath of mica tape, then, embossed at the outer surface of copper pipe sheath by protective metal shell embossing machine, finally obtain fireproof cable finished product.
6. the production technology of fireproof cable according to claim 5, it is characterized in that: in described step c, aluminum pipe formation system includes wire organization of supply, aluminium bar organization of supply and the aluminum pipe forming device being connected with both outfans, aluminum pipe forming device outfan is provided with finished product crimping device, described aluminum pipe forming device includes upper end can overturn the melt molding mechanism of containment vessel (601) and the inside thereof opened, the both sides, top of melt molding mechanism are provided with heater (602), melt molding mechanism includes wire perforation (604) carried for wire (603), it is provided above the melted hole (605) of aluminium bar at wire perforation (604), aluminium bar melts hole (605) upper end and is provided for the aluminium bar import (607) that aluminium bar (606) is carried.
7. the production technology of fireproof cable according to claim 5, it is characterized in that: in described step e, fire proofing material extruder includes the rabbling mechanism being connected successively, extrusion mechanism and haulage gear, cladding mechanism it is provided with between described extrusion mechanism and haulage gear, cladding mechanism includes supporting seat (301), the cylinder (303) and the drum drive that are rotatably assorted is carried out by bearing (302) with supporting seat (301), supporting seat (301) upper end is provided with cantilevered axle (304), bearing (302) is installed in cantilevered axle (304), cantilevered axle (304) middle part is provided with cable transfer hole (305), cylinder (303) inwall is hinged with the cladding roll coil of strip (306).
8. the production technology of fireproof cable according to claim 5, it is characterized in that: in described step f, copper sheath forming machine includes the outfan copper strips coiled body with welder, described copper strips coiled body is the molding die (101) that middle part is provided with copper strip roll curved hole, copper strip roll curved hole includes the bellmouth orifice (102) of leading portion and the straight hole (103) of back segment, the diameter maximum of bellmouth orifice (102) is positioned at outer end, its inner diameter is identical with straight hole (103) diameter, and welder is positioned at straight hole (103) outfan top.
9. the production technology of fireproof cable according to claim 5, it is characterized in that: in described step f, protective metal shell embossing machine includes being positioned at the haulage gear that the drive protective metal shell (802) supported on platform (801) moves linearly, drive the rotating mechanism of protective metal shell rotation and be positioned at protective metal shell (802) top embossing mechanism with push type broach (803), described embossing mechanism also includes being with female fairlead (804), fairlead (804) is fixed on support platform (801) by support (805) and above and is positioned at protective metal shell (802) top, push type broach (803) middle part is provided with external screw thread and matches with the female thread in fairlead (804), fairlead (804) upper side is provided with installing hole (806), installing hole (806) is provided with and gos deep into the adjusting lever (807) that fairlead (804) is internal, adjusting lever (807) outer surface is engaged by arranging helical gear with push type broach (803) outer surface of upper.
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| CN106976158A (en) * | 2017-05-19 | 2017-07-25 | 邓文 | For tube drawing and the device of push wire harness |
| CN108538507A (en) * | 2018-07-10 | 2018-09-14 | 安徽腾飞特种电缆科技有限公司 | Protective layer processing unit (plant) in a kind of multi-functional composite cable |
| CN110246614A (en) * | 2019-06-20 | 2019-09-17 | 安徽华通电缆集团有限公司 | The production equipment of rail traffic inorganic insulation flexible fire-retardant cable and the cable |
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| CN111497172A (en) * | 2020-05-07 | 2020-08-07 | 安徽华通电缆集团有限公司 | Novel flexible branch fireproof cable and forming equipment thereof |
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| CN114728764B (en) * | 2019-11-15 | 2024-03-12 | 康蒂泰克驱动系统有限公司 | Elevator belt with cords comprised of coated strands |
| CN114728764A (en) * | 2019-11-15 | 2022-07-08 | 康蒂泰克驱动系统有限公司 | Elevator belt with cords of coated strands |
| CN111497172B (en) * | 2020-05-07 | 2022-03-11 | 安徽华通电缆集团有限公司 | Flexible branch fireproof cable and forming equipment thereof |
| CN111497172A (en) * | 2020-05-07 | 2020-08-07 | 安徽华通电缆集团有限公司 | Novel flexible branch fireproof cable and forming equipment thereof |
| CN112676498B (en) * | 2020-12-04 | 2021-10-19 | 中国科学院力学研究所 | Processing device for multi-node thermocouple transient heat flow sensor |
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| CN113192668A (en) * | 2021-04-25 | 2021-07-30 | 华远高科电缆有限公司 | Isolated flexible mineral insulation fireproof cable for nuclear industry |
| CN113192668B (en) * | 2021-04-25 | 2023-02-21 | 华远高科电缆有限公司 | Isolated flexible mineral insulation fireproof cable for nuclear industry |
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