EP0109952A2 - Kabelmantel - Google Patents

Kabelmantel Download PDF

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Publication number
EP0109952A2
EP0109952A2 EP83850303A EP83850303A EP0109952A2 EP 0109952 A2 EP0109952 A2 EP 0109952A2 EP 83850303 A EP83850303 A EP 83850303A EP 83850303 A EP83850303 A EP 83850303A EP 0109952 A2 EP0109952 A2 EP 0109952A2
Authority
EP
European Patent Office
Prior art keywords
jacket
cable
rubber
cord
layer
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.)
Granted
Application number
EP83850303A
Other languages
English (en)
French (fr)
Other versions
EP0109952B1 (de
EP0109952A3 (en
Inventor
Gunnar S. Friberg
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.)
Volvo AB
Original Assignee
Volvo AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Volvo AB filed Critical Volvo AB
Publication of EP0109952A2 publication Critical patent/EP0109952A2/de
Publication of EP0109952A3 publication Critical patent/EP0109952A3/en
Application granted granted Critical
Publication of EP0109952B1 publication Critical patent/EP0109952B1/de
Expired legal-status Critical Current

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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
    • H01B9/001—Power supply cables for the electrodes of electric-welding apparatus or electric-arc furnaces
    • 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

Definitions

  • the present invention relates to a cable jacket, especially a rubber jacket, to an electric welding cable and is designed to enclose groups of electrical conductors and coolant ducts for conducting pressurized medium for cooling the cable.
  • the welding cable In modern automatic welding machines such as robot- type welders in which the length of the welding cable is often very short, the welding cable must be quite flexible both transversely to the longitudinal direction of the cable and about the central axis, i.e. it must be both easily bendable and twistable. Furthermore, such cables must be able to absorb the pressure stresses which are applied to the cable jacket from the inside by the pressurized coolant, and by the repelling radial forces generated by the cable cores every time the current through the cable is turned on or off.
  • the primary purpose of the present invention is therefore to achieve a cable jacket which, even with very short lengths, is sufficiently flexible with regard to both bending and torsion, and is capable of absorbing the circumferential tensile forces in the jacket arising due to the pressure exerted by the coolant in the cable and the repelling radial forces generated by the cable cores every time the current through the cable is turned on or off.
  • the cable jacket described by way of introduction is characterized, according to the invention, in that at least one surrounding reinforcement layer of warp-knit type known per se is vulcanized into the rubber jacket, and that radially outside said layer there are vulcanized one or more unidirectionally, helically wound reinforcing cords, the spacing between the adjacent cord windings measuring in the longitudinal direction of the jacket about 2-8 mm, preferably about 4 mm.
  • each reinforcing cord consists of a slightly twined polyester string. It is also suitable that the layers of warp-knit reinforcement and reinforcing cords be separated radially by an intermediate rubber layer.
  • Fig. 1 shows according to scale a cross section of a welding cable 1, which has an outer cable jacket 2 of rubber in accordance with the present invention.
  • the jacket 2 encloses a group of electrical conductors in the form of copper cores 3 and 4 of different polarity, the cores being placed in a ring and separated circumferentially by rib- like walls 5 which project radially out from a central body 6 of rubber or PVC.
  • the central body 6 has a central coolant duct 7 and defines, between its outside and the inside of the outer jacket 2, additional flow ducts 8 for a pressurized coolant, e.g. water.
  • the jacket 2 comprises two reinforcement layers 9 of a warp-knit fabric which is known per se and a cord helix 10 lying outside said two layers.
  • Warp-knit fabric refers in this context to a textile construction in which yarns, usually filament yarns, are interlooped by knitting, with the yarn threads running essentially in the longitudinal direction of the fabric.
  • Fig. 2 shows more clearly the structure of a jacket according to the invention, which only shows one layer of warp-knit reinforcement 9.
  • the jacket 2 has a rubber layer 11, a warp-knit reinforcement 9, a thin layer 12 of rubber, a helically wound layer 10 e.g. of lightly twined polyester, and an outer layer 13 of rubber.
  • a plurality of cords 10 are used that they run parallel to each other and be wound in the same direction, i.e. not crossing each other.
  • the cords should be wound leaving a gap of about 2-8 mm, preferably about 4 mm, between adjacent cord windings.
  • a cable jacket according to the invention is made preferably in finite lengths by being built up on a mandrel, with one or two layers of warp-knit fabric being applied around the inner rubber layer 11. If there is more than one layer, a thin layer of rubber should be placed between the layers, and a thin layer 12 outside the outer warp knit layer 9.
  • a single cord 10 of previously described type is then wound around the layer 12 helically with a pitch so that the distance between the adjacent windings of the cord will be about 2-8 mm, preferably about 4 mm, at a normal jacket diameter of about 5-6 cm.
EP19830850303 1982-11-17 1983-11-10 Kabelmantel Expired EP0109952B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8206551 1982-11-17
SE8206551A SE450674B (sv) 1982-11-17 1982-11-17 Kabelholje

Publications (3)

Publication Number Publication Date
EP0109952A2 true EP0109952A2 (de) 1984-05-30
EP0109952A3 EP0109952A3 (en) 1984-07-04
EP0109952B1 EP0109952B1 (de) 1986-10-01

Family

ID=20348631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830850303 Expired EP0109952B1 (de) 1982-11-17 1983-11-10 Kabelmantel

Country Status (6)

Country Link
EP (1) EP0109952B1 (de)
JP (1) JPS59103208A (de)
CA (1) CA1204182A (de)
DE (1) DE3366628D1 (de)
ES (1) ES285013Y (de)
SE (1) SE450674B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2011517A1 (de) 2001-04-04 2009-01-07 Nordic Vaccine Technology A/S Polynukleotid-bindende Komplexe mit Sterolen und Saponin
CN107622844A (zh) * 2017-09-24 2018-01-23 肇庆市高新区晓靖科技有限公司 一种多层电气套管

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2157377A (en) * 1937-01-21 1939-05-09 Phelps Dodge Copper Prod Electric cable
US2652093A (en) * 1949-03-02 1953-09-15 Gates Rubber Co Method of making reinforced rubber hose
GB1170335A (en) * 1966-03-24 1969-11-12 Dayco Corp Improvements in and relating to Flexible Hose
US3578028A (en) * 1969-07-16 1971-05-11 Fred T Roberts & Co Reinforced hose and method of making the same

Also Published As

Publication number Publication date
JPS59103208A (ja) 1984-06-14
ES285013Y (es) 1986-04-01
ES285013U (es) 1985-06-16
EP0109952B1 (de) 1986-10-01
DE3366628D1 (en) 1986-11-06
SE8206551D0 (sv) 1982-11-17
EP0109952A3 (en) 1984-07-04
CA1204182A (en) 1986-05-06
SE450674B (sv) 1987-07-13
SE8206551L (sv) 1984-05-18

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