CN205158934U - Flexible cable for tow chain - Google Patents

Abstract

The utility model provides a flexible cable for tow chain, its characterized in that: the cable includes conductor, insulating layer, polypropylene gasket for packing, nonwoven strap, inner liner, metal woven shield and oversheath, the laminiform one -tenth insulation core of extruded insulation on the conductor, ten percent cable core is by many insulation core forms around many polypropylene gasket for packing transposition, the nonwoven strap is around wrapping on the stranding sinle silk, the nonwoven strap outwards is inner liner, metal woven shield in proper order, and the oversheath. The utility model has the characteristics of high mechanical tensile strength, wearability, corrosion resistance, interference immunity, resistant reciprocal high -speed bendability, safety ring guarantor nature etc to can improve processing property.

Description

A kind of soft cable for drag chain

[technical field]

The utility model relates to a kind of soft cable for drag chain.

[background technology]

Along with the continuous progress of science and technology, mechanical automation technology is widely applied at the machine industry of China, achieves the continuous effective in manufacture process, automated production, accelerates the flow process speed of production and processing.Mechanical automation has become the important component part of contemporary Advanced Machine Manufacturing Technology.And to be applied in machinery as the cable of signal controlling and power delivery because its particular/special requirement cannot be adapted to, phenomenons such as occurring that cable tangles, wear and tear, pull, be at random, causes equipment fault to take place frequently.Nineteen fifty-three drag chain appearance; traction and protective effect are served to the cable be applied in machinery, decreases the frequency of the equipment fault property sent out, but cable easily " rises and revolves " and " fracture " in the occasion of reciprocal high-speed motion; cause whole production line to stop production, cause tremendous economic to lose.

Therefore, the cable that a kind of drag chain system is special arises at the historic moment.But existing drag chain cable mostly is common cable or common cable and changes a little and form, mostly adopt butyronitrile polyvinyl chloride for insulation and protective cover material in production, poor, the easy compressive deformation of this material cores linear elasticity, cause internal structure destroying infection cable serviceability, useful life is shorter.Produce and easily produce poisonous halogen gas with time discarded, work the mischief to human body and environment.And most drag chain cable cable strength is not enough, in the occasion of reciprocal high-speed motion, cable usually can be caused " to rise and revolve " and " fracture ", and a drag chain often will change cable for several times.

[summary of the invention]

In view of as above situation, the utility model provides a kind of soft cable for drag chain, it has the feature such as high mechanical resistance tensile strength, resistance to wear, corrosion resistance, oil resistance, low temperature resistant, anti-interference, resistance to reciprocal high speed bendability, Safety and Environmental Protection, and has excellent machinability.

The utility model is achieved in that a kind of soft cable for drag chain, described cable comprises conductor, insulating barrier, polypropylene gasket for packing, nonwoven fabric belts, inner covering, metal knitted screen and oversheath, on described conductor, extruded insulation layer forms insulated wire cores, one one-tenth cable core is formed around many root polypropylenes gasket for packing is stranded by many described insulated wire cores, described nonwoven fabric belts is wrapped on one-tenth cable core, described nonwoven fabric belts is outwards followed successively by inner covering, metal knitted screen, and oversheath.

Further, described conductor: adopt the lay ratio left-hand of 15 ~ 25 times system of twisting to form by many soft round copper wires;

Described insulating barrier: be thermoplastic elastomer (TPE) cloudy surface insulating barrier;

Described polypropylene gasket for packing: become cable core central core to fill many and reinforcedly do not twist polypropylene gasket for packing, and dispersedly add several aramid fiber silk thread, form strengthening core; Described insulated wire cores is made around polypropylene gasket for packing with the lay ratio dextrad of 8 ~ 12 times strand;

Described nonwoven fabric belts: the nonwoven fabric belts left-hand that employing 0.05 ~ 0.10mm is thick is overlapping wrapped to be formed;

Described inner covering: for extruding type thermoplastic elastomer (TPE) cloudy surface inner covering;

Metal knitted screen: the zinc-plated soft round thin copper wire adopting annealing, angle of weave controls between 40 ~ 50 °, and count controls 80.0 ~ 82.0%, for improving braid intensity, can add appropriate aramid fiber silk thread when doubling;

Described oversheath: be resistant environmental low-smoke halogen-free flame polyurethane elastomer oversheath.

The utility model tool has the following advantages:

The stranded mode of conductor makes conductor thread core better softness and Stability Analysis of Structures.Insulating barrier extrude technique, such that insulating barrier extrudes closely, smooth in appearance rounding, improve the thermal contraction performance of insulating barrier, give insulating barrier simultaneously and there is the high feature such as mechanical resistance tensile strength, resistance to wear, corrosion resistance, Safety and Environmental Protection.Becoming cable core central core to fill reinforced polypropylene gasket for packing of not twisting also disperses the appropriate aramid fiber silk thread of interpolation to ensure that the bending property of cable, improve the mechanical resistance tensile strength of cable.Nonwoven layer is wrapped prevents inner covering and insulating barrier adhesion, also makes stranding rounding consolidation, reduces " rise and the revolve " phenomenon in use procedure.The setting of each parameter of metal knitted screen, significantly can reduce the surface transfer impedance of Weaving type cable shield, improves shield effectiveness.Increase the mechanical resistance tensile strength that aramid fiber silk thread can increase screen simultaneously; Finally, oversheath adopts polyurethane elastomer sheathing material, its tensile strength, flexibility, resistance to wear, oil resistance, resistance to water and Safety and Environmental Protection are considerably beyond other sheath materials, tearing toughness and low temperature resistantly to subdue, heat-resisting, ageing-resistant performance is also extremely outstanding, half squeezes tubular type extrudes the superiority such as the high mechanical resistance tensile strength can preserving moulding rear material, also can ensure the compactness of cable core and sheath, reduce the heat-shrinkable of sheath.The utility model can be widely used in the fields such as Digit Control Machine Tool, electronic equipment, manipulator, handling equipment, Automatic Warehouse, robot, fire-fighting system.

[accompanying drawing explanation]

The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.

Fig. 1 is the structural representation of a kind of soft cable for drag chain of the utility model.

[embodiment]

Refer to shown in Fig. 1, embodiment of the present utility model is described in detail.

As shown in Figure 1, a kind of soft cable for drag chain, described cable comprises conductor 1, insulating barrier 2, polypropylene gasket for packing 3, nonwoven fabric belts 4, inner covering 5, metal knitted screen 6 and oversheath 7, on described conductor 1, extruded insulation layer 2 forms insulated wire cores, one one-tenth cable core is formed around many root polypropylenes gasket for packing 3 is stranded by many described insulated wire cores, described nonwoven fabric belts 4 is wrapped on one-tenth cable core, described nonwoven fabric belts 4 is outwards followed successively by inner covering 5, metal knitted screen 6, and oversheath 7.

Described conductor: adopt the lay ratio left-hand being not more than 15 ~ 25 times system of twisting to form by many soft round copper wires, when twisting processed, the layering of many soft round copper wire monofilament is uniformly distributed through distributor plate, wire parallel module size used 0.05 ~ 0.10mm about larger than stranded external diameter, ensure the rear smooth rounding of conductor of strand system, without jumping creek, jumping stock phenomenon.Its interrupt line adopts cold welding technique welding, and polishes smooth with fine sandpaper.The stranded rear conductor thread core better softness of technique like this and Stability Analysis of Structures.The selection of pitch like this ensures the flexibility of conductor, and the design of wire parallel module then ensures that conductor is without jumping creek phenomenon.

Insulating barrier: adopt thermoplastic elastomer (TPE) cloudy surface Insulation Material, there is excellent physical and mechanical properties, good softness can be had-60 DEG C time.Adopt equidistant etc. not dark screw rod during production, its compression ratio is 2.2 ~ 3.0, and draw ratio is 25:1 ~ 30:1.Squash type extrusion die, its core rod size 0.05 ~ 0.10mm larger than conductor diameter, die sleeve size and outer insulation diameter are consistent.90 DEG C of preheatings 1 hour is set before start, after preheating, temperature is adjusted to 155 DEG C, a district, 170 DEG C, 2nd district, 180 DEG C, 3rd district, 190 DEG C, 4th district, chuck 190 DEG C, 190 DEG C, machine neck, head 190 DEG C, mould 180 DEG C, deviation ± 5 DEG C.Insulated wire cores is black, and insulating surface adopts the identification of lettering rat white Arabic numerals.Insulating barrier extrude rear core closely, outward appearance rounding, improve insulation cooling meat, give insulating barrier simultaneously and there is the high feature such as mechanical resistance tensile strength, resistance to wear, corrosion resistance.The setting of temperature ensures that plasticize is even, and extrude smooth surface, the characteristic with material itself is relevant.

Polypropylene gasket for packing: become cable core center to adopt many reinforcedly not twist polypropylene gasket for packing, for proof strength needs dispersedly to add several aramid fiber silk thread 31, composition strengthening core.Insulated wire cores with the lay ratio dextrad of 8 ~ 12 times strand system around gasket for packing, for ensureing the smooth rounding of wrapped rear core, can be filled at insulated wire cores outer outer rim gap location and reinforcedly not twist polypropylene gasket for packing.Adopt wire parallel module size 0.2 ~ 0.5mm larger than technique external diameter, plug die size is consistent with technique external diameter.Center-filled is reinforced does not twist polypropylene gasket for packing, and the appropriate aramid fiber silk thread of dispersion interpolation ensure that the bending property of cable, improves the mechanical resistance tensile strength of cable.

Nonwoven fabric belts: the nonwoven fabric belts left-hand that employing 0.05 ~ 0.10mm is thick is overlapping wrapped to be formed, and its Duplication is not less than 15%, wrapped smooth, corrugationless.Adopt nonwoven fabric belts hot strength >=45N/cm, elongation at break >=12%.Nonwoven fabrics is wrapped prevents inner covering and insulating barrier adhesion, also makes into cable core rounding, also has the effects such as moistureproof.Wrapped of nonwoven fabric belts tightens core, ensures the effect of rounding property, ensures the rounding property of core in product use procedure, reduces operating " revolve " phenomenon.

Inner covering: adopt and extrude type inner covering, adopt equidistant etc. not dark screw rod during production, its compression ratio is 2.2 ~ 3.0, and draw ratio is 25:1 ~ 30:1.Squash type extrusion die, its core rod size likens to the large 0.5 ~ 1.0mm of cable core external diameter, and die sleeve size and inner covering external diameter are consistent.90 DEG C of preheatings 1 hour is set before start, after preheating, temperature is adjusted to 155 DEG C, a district, 170 DEG C, 2nd district, 180 DEG C, 3rd district, 190 DEG C, 4th district, chuck 190 DEG C, 190 DEG C, machine neck, head 190 DEG C, mould 180 DEG C, deviation ± 5 DEG C.This technique makes inner covering compacted mass, intensity reliable, outer surface flat smooth.

Metal knitted screen: the zinc-plated soft round thin copper wire adopting annealing.Angle of weave controls between 40 ~ 50 °, and count controls 80.0 ~ 82.0%, significantly can reduce the surface transfer impedance of Weaving type cable shield, improves shield effectiveness.Meanwhile, appropriate aramid fiber silk thread can be added when doubling, increase the mechanical resistance tensile strength of screen.

Oversheath: adopt resistant environmental low-smoke halogen-free flame polyurethane elastomer sheathing material, has excellent physical and mechanical properties, can have good flexility-60 DEG C time.Adopt equidistant etc. not dark screw rod during production, its compression ratio is 2.2 ~ 3.0, and draw ratio is 25:1 ~ 30:1.Half squeezes tubular type extrusion die, and its core rod size 0.5 ~ 0.8mm larger than external diameter after braiding, die sleeve is of a size of core rod size+core rod wall thickness+jacket thickness+(2 ~ 4) mm.110 DEG C of preheatings 4 hours are set before start, after preheating, temperature are adjusted to 140 DEG C, a district, 160 DEG C, 2nd district, 170 DEG C, 3rd district, 170 DEG C, 4th district, chuck 170 DEG C, 170 DEG C, machine neck, head 172 DEG C, mould 170 DEG C, deviation ± 5 DEG C.Sheath is black.The tensile strength of polyurethane elastomer sheathing material, flexibility, resistance to wear, oil resistance, resistance to water and Safety and Environmental Protection are considerably beyond other sheath materials, tearing toughness and low temperature resistantly to subdue, heat-resisting, ageing-resistant performance is also extremely outstanding, half squeezes tubular type extrudes the superiority such as the high mechanical resistance tensile strength can preserving moulding rear material, also can ensure the compactness of cable core and sheath, reduce the heat-shrinkable of sheath.Half squeezes tubular type extrudes the lifting being conducive to working (machining) efficiency in sheath extrusion process, and can ensure again the compactness of cable core and sheath, reduce the shear applications of protective cover material at mould mouth, when making to extrude, sheath distortion is little, ensures the heat-shrinkable of sheath.

In a word, the utility model has the feature such as high mechanical resistance tensile strength, resistance to wear, corrosion resistance, oil resistance, low temperature resistant, anti-interference, resistance to reciprocal high speed bendability, Safety and Environmental Protection, and has excellent machinability.

Although the foregoing describe embodiment of the present utility model; but be familiar with those skilled in the art to be to be understood that; specific embodiment described by us is illustrative; instead of for the restriction to scope of the present utility model; those of ordinary skill in the art, in the modification of the equivalence done according to spirit of the present utility model and change, should be encompassed in scope that claim of the present utility model protects.

Claims (2)

1. a soft cable for drag chain, it is characterized in that: described cable comprises conductor, insulating barrier, polypropylene gasket for packing, nonwoven fabric belts, inner covering, metal knitted screen and oversheath, on described conductor, extruded insulation layer forms insulated wire cores, one one-tenth cable core is formed around many root polypropylenes gasket for packing is stranded by many described insulated wire cores, described nonwoven fabric belts is wrapped on one-tenth cable core, described nonwoven fabric belts is outwards followed successively by inner covering, metal knitted screen, and oversheath.

2. a kind of soft cable for drag chain according to claim 1, is characterized in that: described conductor: adopt the lay ratio left-hand of 15 ~ 25 times system of twisting to form by many soft round copper wires;

Described insulating barrier: be thermoplastic elastomer (TPE) cloudy surface insulating barrier;

Described polypropylene gasket for packing: become cable core central core to fill many and reinforcedly do not twist polypropylene gasket for packing, and dispersedly add several aramid fiber silk thread, form strengthening core; Described insulated wire cores is made around polypropylene gasket for packing with the lay ratio dextrad of 8 ~ 12 times strand;

Described nonwoven fabric belts: the nonwoven fabric belts left-hand that employing 0.05 ~ 0.10mm is thick is overlapping wrapped to be formed;

Described inner covering: for extruding type thermoplastic elastomer (TPE) cloudy surface inner covering;

Metal knitted screen: the zinc-plated soft round thin copper wire adopting annealing, angle of weave controls between 40 ~ 50 °, and count controls 80.0 ~ 82.0%, for improving braid intensity, can add appropriate aramid fiber silk thread when doubling;

Described oversheath: be resistant environmental low-smoke halogen-free flame polyurethane elastomer oversheath.