EP3633692B1 - Kabel für roboter - Google Patents

Kabel für roboter Download PDF

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Publication number
EP3633692B1
EP3633692B1 EP17911707.2A EP17911707A EP3633692B1 EP 3633692 B1 EP3633692 B1 EP 3633692B1 EP 17911707 A EP17911707 A EP 17911707A EP 3633692 B1 EP3633692 B1 EP 3633692B1
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EP
European Patent Office
Prior art keywords
insert
cable
core
binding tape
inner core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17911707.2A
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English (en)
French (fr)
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EP3633692A4 (de
EP3633692A1 (de
Inventor
Hong Seok Choi
Young Hoon Yang
Hong Keun Park
Hoon Chul Yang
Hyun Joo Hwang
Min Su Kang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LS Cable and Systems Ltd
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LS Cable and Systems Ltd
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Filing date
Publication date
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Publication of EP3633692A1 publication Critical patent/EP3633692A1/de
Publication of EP3633692A4 publication Critical patent/EP3633692A4/de
Application granted granted Critical
Publication of EP3633692B1 publication Critical patent/EP3633692B1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • 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
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
    • H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
    • 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
    • H01B7/02—Disposition of insulation
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/006—Constructional features relating to the conductors

Definitions

  • the present invention relates to a cable for a robot, and more particularly, to a cable, for a robot, which has significantly improved durability against repeated torsion and a long bending life and thus is applicable as an industrial robot.
  • an industrial robot performs various tasks such as welding, painting, and conveying in a machine part production line.
  • Such an industrial robot is connected to a central control unit or the like via a cable for a robot, and is supplied with necessary power and transmit or receive information necessary for various tasks via the cable.
  • the industrial robot is continuously moving or making actions and thus fatigue load such as tension, torsion, bending or the like is repeatedly applied to the cable, for a robot, connected to the industrial robot.
  • US 5 122 622 A describes an electrical cable includes a central bearing part having a plurality of high-tensile plastic filaments. A rubber sheathing encloses the bearing part. An inner and outer conductor are twisted onto the sheathed bearing part and are disposed concentrically to one another. The inner and outer conductors each include stranded wires.
  • US 4 538 022 A describes a cables where conductors are elastically fixed to a structural element of the cable. The conductor insulation is joined in a material-bonded manner to the structural element which consists of a soft elastomer.
  • JPS5864012U and JP2012146591A Further prior art may also be found in JPS5864012U and JP2012146591A .
  • the present invention is directed to providing a cable for a robot, which is capable of significantly increasing durability and a fatigue life even when used in an environment where torsion or bending frequently occurs.
  • the outer core may comprise a second conductor with a plurality of second wire rods twisted at a predetermined second pitch; a core part with a plurality of second conductors twisted at a predetermined third pitch; and a second insulating layer on an outer side of the core part, wherein the second pitch is 15 to 50 times an outer diameter of the second conductor, and the third pitch is 10 to 30 times an outer diameter of the core part.
  • an increase rate of yield strength of the first wire rods of the inner core and the second wire rods of the outer core may be in a range of 1% to 30%.
  • the unsintered fluororesin may comprise an unsintered polytetrafluoroethylene (PTFE) resin.
  • PTFE polytetrafluoroethylene
  • a coefficient of friction of each of the inner binding tape and the outer binding tape may be in a range of 0.05 to 0.2.
  • an outer diameter of the first insert and an outer diameter of the second insert respectively correspond to an outer diameter of the inner core and an outer diameter of the outer core.
  • the outer diameter of the first insert may be 80% to 120% of that of the inner core, and the outer diameter of the second insert may be 80% to 120% of that of the outer core.
  • the first insert and the second insert are formed by twisting elastic yarn, respectively.
  • the elastic yarn may comprise polyester yarn.
  • the cable may further comprise an additional binding tape between the shielding layer and the sheath.
  • the additional binding tape may comprise an unsintered polytetrafluoroethylene (PTFE) resin.
  • PTFE polytetrafluoroethylene
  • the sheath may be formed by tube type extrusion.
  • a cable for a robot, comprising: a plurality of inner cores on an outer circumferential surface of a center insert having a round cross-section; an inner binding tape for binding outsides of the inner cores; a plurality of outer cores on an outer circumferential surface of the inner binding tape; an outer binding tape for binding outsides of the outer cores; a shielding layer on an outer side of the outer binding tape; and a sheath on an outer side of the shielding layer, wherein the inner binding tape and the outer binding tape are formed of an unsintered fluororesin and wherein a coefficient of friction of each of the inner binding tape and the outer binding tape is in a range of 0.05 to 0.2.
  • the durability and fatigue life thereof can be remarkably increased even when used in an environment in which torsion or bending frequently occurs.
  • the durability thereof is improved to minimize process interruptions at an industrial site, thereby minimizing losses due to the process interruptions.
  • FIG. 1 is a cross-sectional view of an inner structure of a cable 100 for a robot according to the present invention.
  • the cable 100 for a robot includes a center insert 20, at least one inner core 10 surrounding the center insert 20, at least one first insert 22 surrounding the center insert 20 and disposed between the at least one inner core 10, an inner binding tape 30 surrounding the at least one inner core 10 and the at least one first insert 22 to bind them, and formed of an unsintered fluororesin, at least one outer core 40 surrounding an outer side of the inner binding tape 30, at least one second insert 50 disposed on an outer side of the inner binding tape 30, an outer binding tape 32 for binding the outer core 40 and the second insert 50 and formed of an unsintered fluororesin, a shielding layer 60 disposed on an outer side of the outer binding tape 32, and a sheath 70 disposed on an outer side of the shielding layer 60.
  • the inner core 10 may be configured for communication to exchange information with the outside, and the outer core 40 may be configured for power supply.
  • the inner core 10 includes a first conductor 13 with a plurality of first wire rods 12 twisted at a predetermined first pitch, and a first insulating layer 14 provided on an outer side of the first conductor.
  • the first wire rod 12 may be formed of a material such as copper, and the first insulating layer 14 covering the first conductor 13 with the first wire rods 12 may be formed of polyethylene (PE), high-density polyethylene (HDPE), or the like.
  • PE polyethylene
  • HDPE high-density polyethylene
  • tensile stress may remain in the first wire rods 12.
  • the tensile stress remaining in the first wire rods 12 after the formation of the inner core 10 indicates that tensile pre-strain is high.
  • yield strength of the first wire rods 12 may be increased, for example, by 30% or more.
  • the damage caused to the first wire rods 12 may be represented by a resistance change rate (%) which changes a resistance.
  • FIG. 2 is a graph showing resistance change rates according to the number of times of torsion of an example of the present invention and a comparative example.
  • the example refers to a wire rod, an increase rate of yield strength of which was in a range 1% to 30% after the formation of the inner core 10.
  • the comparative example refers to a wire rod, an increase rate of yield strength of which was greater than 30% after the formation of the inner core 10.
  • the horizontal axis represents the number of times of torsion (x1000 times) and the vertical axis represents a resistance change rate (%).
  • the resistance change rate of the example was approximately 7%, i.e., it was very low.
  • damage such as cracks occurred to a relatively very small degree, and an increase rate of yield strength was 30% or less, i.e., in a range of 1% to 30%, due to relatively low tensile pre-strain.
  • a fatigue life increases as tensile pre-strain is relatively smaller after processing of a wire rod and may be predicted indirectly by an increase rate of yield strength or a resistance change rate after the processing of the wire rod.
  • the fatigue life may be increased by determining the increase rate of yield strength or the resistance change rate according to a predetermined threshold after the processing of the wire rod.
  • a predetermined threshold For example, in the present invention, an increase rate of yield strength of 1% to 30%, i.e., 30% or less, or a resistance change rate of 1% to 25%, i.e., 25% or less, after the processing of the wire rod may be set as a threshold.
  • the present inventors conducted an experiment to identify factors affecting a resistance change rate of a wire rod.
  • the result of the experiment is illustrated in FIG. 3 .
  • FIG. 3 is a graph showing resistance change rates according to the number of times of torsion of an example of the present invention and comparative examples .
  • the example refers to wire rods obtained by forming each of conductors by twisting a plurality of wire rods at a predetermined pitch ('aggregate type') and forming a core part by twisting the conductors at a predetermined pitch ('composite type').
  • the comparative examples were each obtained by forming each conductor by twisting a plurality of wire rods at a predetermined pitch ('aggregate type').
  • the total outer diameters of the example and the comparative examples were the same.
  • the pitch of the wire rods of comparative example 1 was greater than that of the wire rods of comparative example 2.
  • the pitch of the wire rods of comparative example 1 was approximately 18 mm
  • the pitch of the wire rods of comparative example 2 was approximately 12 mm.
  • the horizontal axis represents the number of times of torsion (x1000 times) and the vertical axis represents a resistance change rate (%).
  • the resistance change rate (%) of the wire rods of the example, which was obtained by aggregate type and composite type processings, versus an increase in the number of times or torsion is remarkably greater than those of the comparative examples.
  • the resistance change rate (%) exceeded about 25% when the number of times of torsion exceeded 2,000.
  • the first conductor 13 of the inner core 10 may be formed by the aggregate type processing.
  • the first pitch of the first wire rod 12 is 15 to 30 times the outer diameter of the first conductor 13.
  • a resistance change rate of the first wire rod 12 is greater than 25% or an increase rate of yield strength is greater than 30%.
  • the first pitch of the first wire rod 12 is greater than 30 times the outer diameter of the first conductor 13 the first pitch is extremely long and prevents the first conductor 13 from being appropriately formed in a round shape.
  • the increase rate of the yield strength of the first wire 12 of the inner core 10 is in a range of 1% to 30% and thus the resistance change rate (%) is in a range of 1% to 25%.
  • the center insert 20 is provided in a center of the inner core 10.
  • the center insert 20 maintains a round shape of the cable 100 for a robot, together with the first insert 22 and the second insert 50 to be described later.
  • An insert of a cable of a related art is formed of a PVC string, polyethylene (PE), ethylene propylene diene monomer (EPDM), or the like.
  • Table 1 below shows a result of measuring a resistance of the inner core 10 after a torsion test was conducted 500,000 times on an example and a comparative example having the same structure.
  • the center insert 20, the first insert 22, and the second insert 50 of the example were each manufactured by twisting elastic yarn, i.e.., polyester yarn, and those of the comparative example were each formed of an EPDM.
  • Inner cores 1 to 5 represent the at least one inner core 10 of FIG. 1 , to which arbitrary numbers are assigned.
  • resistance (m ⁇ ) of comparative example resistance (m ⁇ ) of example inner core 1 18.27 7.1 inner core 2 18.05 7.6 inner core 3 37.5 8.2 inner core 4 16.06 7.1 inner core 5 28.07 7.5
  • a threshold may vary depending on a place where a cable was installed, a work process, a customer request, or the like but was set to about 8.25 m ⁇ .
  • resistance values of all the inner cores of the comparative example were greater than or equal to the threshold and thus did not satisfy a reference value.
  • a maximum resistance value of the example was 8.2 m ⁇ and thus all resistance values satisfied the reference value.
  • the inserts were formed of highly elastic yarn to deliver only relatively low stress to the inner cores even when torsion or the like was applied, thereby preventing an increase of a resistance value due to internal stress damage.
  • At least one of the center insert 20, the first insert 22, or the second insert 50 may be formed by twisting elastic yarn.
  • the elastic yarn may be polyester yarn.
  • the center insert 20 was located at a center, and at least one inner core 10 and the first insert 22 were disposed along the outer side of the center insert 20.
  • the first insert 22 preferably has an outer diameter corresponding to that of the inner core 10.
  • the outer diameter of the inner core 10 may be determined according to a working environment to which the cable 100 for a robot is applied, the outer diameter of the first insert 22 is preferably determined to correspond to that of the inner core 10.
  • the outer diameter of the first insert 22 may be 80% to 120% of that of the inner core 10.
  • the outer diameter of the first insert 22 When the outer diameter of the first insert 22 is relatively extremely large, pressure may be applied to the inner core 10 when torsion is applied thereto and thus the first conductor 13 of the inner core 10 may be damaged, e. g., broken. When the outer diameter of the first insert 22 is relatively extremely small, the round shape may not be achieved.
  • the inner binding tape 30 surrounds the inner core 10 and the first insert 22 to bind them and maintains the round shape.
  • nonwoven fabric or a sintered fluororesin is used as a binding tape.
  • the strength and coefficient of friction of the sintered fluororesin are relatively high and thus stress cannot be absorbed and is transferred to an inner core when torsion or the like is applied to the cable.
  • the inner core may be damaged by friction between the binding tape and the inner core.
  • the inner binding tape 30 is formed of an unsintered fluorine resin having a relatively low coefficient of friction and strong lubricity.
  • the unsintered fluororesin may be an unsintered polytetrafluoroethylene (PTFE) resin.
  • PTFE polytetrafluoroethylene
  • the inner binding tape 30 may be configured to have a coefficient of friction between 0.05 and 0.2. The binding tape 30 of the coefficient of friction may slip softly when torsion is applied to the cable and thus frictional damage between the binding tape 30 and the outer core 40 may be minimized, thereby greatly improving the durability of the cable.
  • FIG. 4 is a graph showing the difference between a coefficient of friction when a binding tape B according to the present invention was applied and a coefficient of friction when a binding tape A of a related art was applied,
  • the binding tape B of the present invention was formed of an unsintered polytetrafluoroethylene (PTFE) resin, and the binding tape A of the related art was formed of a sintered fluororesin.
  • PTFE polytetrafluoroethylene
  • a coefficient of friction was approximately 0.146 ⁇ when the binding tape A of the related art was applied, whereas a coefficient of friction was approximately 0.092 ⁇ and decreased by about 37% when the binding tape B of the present invention was applied.
  • FIG. 5 is a graph comparing a change of a pull-out force of an example of the present invention with that of a pull-out force of a comparative example.
  • an example represents a case in which the inner binding tape 30 was formed of an unsintered polytetrafluoroethylene (PTFE) resin
  • a comparative example represents a case in which a sintered fluororesin was used as a binding tape.
  • a pull-out force is defined as a force N required due to friction with an outer core when an inner core was pulled out. That is, a friction force between an inner core and the outer core due to the inner binding tape 30 increases as the pull-out force is relatively large but decreases as the pull-out force decreases as the pull-out force is relatively small.
  • the horizontal axis represents a length (mm) by which the inner core was pulled out
  • the vertical axis represents a required force N.
  • a required force decreases as a length by which the inner core is pulled out increases.
  • the required force was 30 to 35 N when the length by which the inner core was pulled out was about 100 mm.
  • the required force was lower than that of the comparative example.
  • the required force was about 15 N and decreased to about 50% to 57% of that of the comparative example.
  • At least one outer core 40 and at least one second insert 50 are provided on an outer side of the inner binding tape 30.
  • the outer core 40 may be formed by the aggregate type and complex type processings.
  • the outer core 40 may include a second conductor 43 with a plurality of second wire rods 42 twisted at a predetermined second pitch, a core part 45 with a plurality of second conductors 43 twisted at a predetermined third pitch, and a second insulating layer 44 provided on an outer side of the core part 45.
  • the second pitch is 15 to 50 times an outer diameter of the second conductor 43
  • the third pitch is 10 to 30 times an outer diameter of the core part 45.
  • an increase rate of the yield strength of the second wire 42 of the outer core 40 is in a range of 1% to 30% and a resistance change rate (%) is in a range of 1% to 25%.
  • the second insert 50 has an outer diameter corresponding to that of the outer core 40.
  • the outer diameter of the second insert 50 may be 80 to 120% of that of the outer core 40.
  • the second insert 50 is formed by twisting elastic yarn, and the elastic yarn may be polyester yarn.
  • the second insert 50 is substantially the same as the first insert 22 described above and thus a redundant description thereof will be omitted.
  • outer cores 40 and one second insert 50 are illustrated in the drawing, the numbers of outer cores 40 and second inserts 50 are merely examples and may be appropriately changed.
  • the outer binding tape 32 binds the outer core 40 and the second insert 50 and is formed of an unsintered fluororesin.
  • the unsintered fluororesin may an unsintered polytetrafluoroethylene (PTFE) resin, and a coefficient of friction of the outer binding tape 32 may be in a range of 0.05 and 0.2.
  • the outer binding tape 32 is substantially the same as the inner binding tape 30 described above and thus a redundant description thereof will be omitted.
  • the shielding layer 60 is provided on an outer side of the outer binding tape 32.
  • the shielding layer 60 may be in the form of a metal tape or braid formed of a material such as copper, aluminum, a copper alloy, or an aluminum alloy.
  • the shielding layer 60 maintains communication characteristics of a communication cable by electromagnetic shielding or protects the cable from external impacts.
  • the sheath 70 is provided on an outer side of the shielding layer 60.
  • the sheath 70 may be an outermost layer of the cable 100 for a robot, and prevents the above-described inner components from being exposed to the outside and protects the inner components from external impacts.
  • a sheath is molded by fully filled type extrusion but in this case, pressure marks may be caused on an inner conductor or a shielding layer due to the sheath after the extrusion.
  • the sheath 70 is extrusion molded by tube type extrusion.
  • the tube type extrusion is a process of inserting the inner components into the sheath 70 prepared in advance in the form of a tube and thus pressure marks may be prevented from occurring on the inner conductor or the shielding layer due to the sheath 70 after extrusion.
  • an additional binding tape 34 may be further provided between the shielding layer 60 and the sheath 70.
  • an internal frictional force may be further reduced when torsion, bending, or the like is applied to the cable 100 for a robot.
  • the additional binding tape 34 is formed of an unsintered polytetrafluoroethylene (PTFE) resin and has a coefficient of friction between 0.05 and 0.2.
  • PTFE polytetrafluoroethylene
  • FIG. 6 is a graph showing resistance change rates (%) according to the number of times of torsion of an example of the present invention and a comparative example.
  • the example refers to a cable having the same configuration as that of FIG. 1 described above
  • the comparative example refers to a cable in which high-density polyethylene (HDPE) or an EPDM was applied as an insert, a sintered fluororesin was applied as a binding tape, and a sheath was formed by fully filled type extrusion.
  • the horizontal axis represents the number of times of torsion (x1000 times) and the vertical axis represents a resistance change rate (%).
  • the resistance change rate exceeded 25% which was a reference value when the number of times of torsion reached approximately 20,000 to 25,000.
  • the resistance change rate did not exceed 5.0% and was far less than 25% which was the reference value even when the number of times of torsion was greater than 50,000.

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  • Insulated Conductors (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (11)

  1. Kabel (100) für einen Roboter, umfassend:
    einen zentralen Einsatz (20);
    mindestens einen inneren Kern (10), der den zentralen Einsatz (20) umgibt;
    mindestens einen ersten Einsatz (22), der den zentralen Einsatz (20) umgibt, und wobei der mindestens eine innere Kern (10) und der mindestens eine erste Einsatz (22) an einer Außenseite des zentralen Einsatzes (20) angeordnet sind;
    ein inneres Einfassungsband (30), das den inneren Kern (10) und den ersten Einsatz (22) umgibt, um den inneren Kern (10) und den ersten Einsatz (22) einzufassen, wobei das innere Einfassungsband (30) aus einem ungesinterten Fluorharz gebildet ist;
    mindestens einen äußeren Kern (40), der eine Außenseite des inneren Einfassungsbands (30) umgibt;
    mindestens einen zweiten Einsatz (50) an einer Außenseite des inneren Einfassungsbands (30);
    ein äußeres Einfassungsband (32) zur Einfassung des äußeren Kerns (40) und des zweiten Einsatzes (50), wobei das äußere Einfassungsband (32) aus einem ungesinterten Fluorharz gebildet ist;
    eine Abschirmschicht (60) an einer Außenseite des äußeren Einfassungsbands (32); und
    eine Ummantelung (70) an einer Außenseite der Abschirmschicht (60),
    wobei der innere Kern (10) Folgendes umfasst:
    einen ersten Leiter (13) mit einer Vielzahl von ersten Walzdrähten (12), die mit einer vorbestimmten ersten Steigung verdrillt sind; und
    eine erste Isolierschicht (14) an einer Außenseite des ersten Leiters (13),
    wobei die erste Steigung das 15- bis 30-Fache eines Außendurchmessers des ersten Leiters (13) beträgt, wobei der zentrale Einsatz (20), der erste Einsatz (22) und der zweite Einsatz (50) jeweils durch Verdrillen eines elastischen Garns gebildet sind.
  2. Das Kabel nach Anspruch 1, wobei der äußere Kern Folgendes umfasst:
    einen zweiten Leiter (43) mit einer Vielzahl von zweiten Walzdrähten (42), die mit einer vorbestimmten zweiten Steigung verdrillt sind;
    einen Kernteil (45) mit einer Vielzahl von zweiten Leitern (43), die mit einer vorbestimmten dritten Steigung verdrillt sind; und
    eine zweite Isolierschicht (44) an einer Außenseite des Kernteils (45),
    wobei die zweite Steigung das 15- bis 50-Fache eines Außendurchmessers des zweiten Leiters (43) beträgt und
    die dritte Steigung das 10- bis 30-Fache eines Außendurchmessers des Kernteils beträgt.
  3. Kabel nach Anspruch 1, wobei eine Steigerungsrate einer Streckgrenze der ersten Walzdrähte (12) des inneren Kerns (10) und der zweiten Walzdrähte (42) des äußeren Kerns (40) in einem Bereich von 1 % bis 30 % liegt.
  4. Kabel nach Anspruch 1, wobei das ungesinterte Fluorharz ein ungesintertes Polytetrafluorethylenharz (PTFE-Harz) umfasst.
  5. Kabel nach Anspruch 1, wobei ein Reibungskoeffizient des inneren Einfassungsbands (32) und des äußeren Einfassungsbands (32) jeweils in einem Bereich von 0,05 bis 0,2 liegt.
  6. Kabel nach Anspruch 1, wobei ein Außendurchmesser des ersten Einsatzes (22) und ein Außendurchmesser des zweiten Einsatzes (50) einem Außendurchmesser des inneren Kerns (10) bzw. einem Außendurchmesser des äußeren Kerns (40) entsprechen.
  7. Kabel nach Anspruch 6, wobei der Außendurchmesser des ersten Einsatzes (22) 80 % bis 120 % des Außendurchmessers des inneren Kerns (10) beträgt und der Außendurchmesser des zweiten Einsatzes (50) 80 % bis 120 % des Außendurchmessers des äußeren Kerns (40) beträgt.
  8. Kabel nach Anspruch 1, wobei das elastische Garn Polyestergarn umfasst.
  9. Kabel nach Anspruch 1, des Weiteren umfassend ein weiteres Einfassungsband zwischen der Abschirmschicht und der Ummantelung.
  10. Kabel nach Anspruch 9, wobei das weitere Einfassungsband ein ungesintertes Polytetrafluorethylenharz (PTFE-Harz) umfasst.
  11. Kabel nach Anspruch 1, wobei die Ummantelung (70) durch Schlauchextrusion ausgebildet ist.
EP17911707.2A 2017-05-31 2017-10-25 Kabel für roboter Active EP3633692B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170067918A KR102348281B1 (ko) 2017-05-31 2017-05-31 로봇용 케이블
PCT/KR2017/011830 WO2018221793A1 (ko) 2017-05-31 2017-10-25 로봇용 케이블

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EP3633692A1 EP3633692A1 (de) 2020-04-08
EP3633692A4 EP3633692A4 (de) 2021-02-24
EP3633692B1 true EP3633692B1 (de) 2023-07-26

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EP (1) EP3633692B1 (de)
JP (1) JP2020520068A (de)
KR (1) KR102348281B1 (de)
CN (1) CN110663092B (de)
WO (1) WO2018221793A1 (de)

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KR20230140848A (ko) * 2022-03-30 2023-10-10 엘에스전선 주식회사 음향 케이블용 도체 및 이를 포함하는 음향 케이블
KR20250154716A (ko) 2024-04-22 2025-10-29 엘에스전선 주식회사 우수한 비틀림 내구성을 갖는 로봇용 케이블

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JP2020520068A (ja) 2020-07-02
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WO2018221793A1 (ko) 2018-12-06
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