FR2768848A1 - DEVICE FOR DEPOSITING A SOLID LUBRICANT ON A CABLE - Google Patents
DEVICE FOR DEPOSITING A SOLID LUBRICANT ON A CABLE Download PDFInfo
- Publication number
- FR2768848A1 FR2768848A1 FR9711937A FR9711937A FR2768848A1 FR 2768848 A1 FR2768848 A1 FR 2768848A1 FR 9711937 A FR9711937 A FR 9711937A FR 9711937 A FR9711937 A FR 9711937A FR 2768848 A1 FR2768848 A1 FR 2768848A1
- Authority
- FR
- France
- Prior art keywords
- cable
- depositing
- lubricating material
- sheath
- 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.)
- Granted
Links
Classifications
-
- 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
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/145—Pretreatment or after-treatment
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Electric Cable Installation (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Physical Vapour Deposition (AREA)
Abstract
L'invention concerne un dispositif comportant une extrudeuse (20) pour réaliser une gaine sur l'âme (10) d'un câble, un organe de dépôt (21) d'un matériau lubrifiant sur ce câble et un bac de refroidissement (22); cet organe de dépôt est une enceinte de pulvérisation en phase plasma. L'invention concerne aussi un procédé pour la mise en oeuvre du dispositif ci-dessus.The invention relates to a device comprising an extruder (20) for producing a sheath on the core (10) of a cable, a depositing member (21) of a lubricating material on this cable and a cooling tank (22 ); this deposition member is a plasma phase spray enclosure. The invention also relates to a method for implementing the above device.
Description
Dispositif pour déposer un lubrifiant solide sur un câble La présenteDevice for depositing a solid lubricant on a cable The present
invention concerne un dispositif pour déposer un lubrifiant solide sur un câble, un tel câble invention relates to a device for depositing a solid lubricant on a cable, such a cable
étant prévu pour être installé dans une conduite tubulaire. being intended to be installed in a tubular pipe.
Dans de nombreux domaines d'application et notamment en télécommunications, les câbles électriques ou à fibres optiques sont introduits dans des conduites. Il convient donc de minimiser le coefficient de frottement de ces câbles sur les parois internes des conduites.10 Une première solution connue figure dans le brevet français FR 2 674 364. Dans ce document, l'âme d'un câble passe par une première extrudeuse pour application d'une gaine conventionnelle qui est souvent en polyéthylène. L'âme gainée passe ensuite dans une seconde extrudeuse pour15 application d'une couche lubrifiante composite telle qu'un alliage polyéthylène-résine silicone. Le câble ainsi lubrifié passe enfin, de manière connue, dans un bac de refroidissement. Une deuxième solution connue figure dans la demande de brevet allemand DE 44 10 456. On prévoit ici, comme dans le premier document, une extrudeuse pour revêtir l'âme du câble d'une gaine. A la suite de cette extrudeuse est disposée une chambre d'enduction pour appliquer sur la gaine encore chaude des granulés en matière dure, ces granulés devant se25 détacher lors de l'introduction du câble dans la conduite. Finalement, le câble enduit traverse un bac de refroidissement. Ces deux solutions sont difficiles à mettre en oeuvre et ne permettent pas d'obtenir une très bonne homogénéité du In many fields of application and in particular in telecommunications, electric or optical fiber cables are introduced into conduits. It is therefore advisable to minimize the coefficient of friction of these cables on the internal walls of the conduits.10 A first known solution appears in French patent FR 2 674 364. In this document, the core of a cable passes through a first extruder for application of a conventional sheath which is often made of polyethylene. The sheathed core then passes through a second extruder for application of a composite lubricating layer such as a polyethylene-silicone resin alloy. The cable thus lubricated finally passes, in known manner, into a cooling tank. A second known solution is found in German patent application DE 44 10 456. Here, as in the first document, an extruder is provided to coat the core of the cable with a sheath. Following this extruder is arranged a coating chamber for applying granules of hard material to the still hot sheath, these granules having to come off when the cable is introduced into the pipe. Finally, the coated cable passes through a cooling tank. These two solutions are difficult to implement and do not make it possible to obtain very good homogeneity of the
matériau lubrifiant.lubricating material.
La présente invention a ainsi pour objet un dispositif qui pallie cette imperfection. The present invention thus relates to a device which overcomes this imperfection.
L'invention concerne donc un dispositif comportant une extrudeuse pour réaliser une gaine sur l'âme d'un câble, un organe de dépôt d'un matériau lubrifiant sur ce câble et un bac de refroidissement, cet organe de dépôt étant une enceinte de pulvérisation en phase plasma. De préférence, le matériau lubrifiant est à base de polytetrafluoroéthylène ou alors ce matériau lubrifiant est inorganique. L'invention concerne également un procédé pour réaliser un revêtement lubrifiant sur un câble comprenant une étape d'extrusion d'une gaine sur l'âme de ce câble, un étape de dépôt d'un matériau lubrifiant sur ce câble et une The invention therefore relates to a device comprising an extruder for producing a sheath on the core of a cable, a member for depositing a lubricating material on this cable and a cooling tank, this depositing member being a spraying enclosure. in the plasma phase. Preferably, the lubricating material is based on polytetrafluoroethylene or else this lubricating material is inorganic. The invention also relates to a method for producing a lubricant coating on a cable comprising a step of extruding a sheath on the core of this cable, a step of depositing a lubricant material on this cable and a
étape de refroidissement, procédé dans lequel cette étape de dépôt consiste en une pulvérisation en phase plasma. cooling step, process in which this deposition step consists of spraying in the plasma phase.
L'invention apparaitra maintenant de manière plus précise dans le cadre de la description qui suit d'exemples The invention will now appear more precisely in the context of the following description of examples
de mise en oeuvre donnés à titre illustratif en se référant15 à la figure unique annexée qui représente un schéma du dispositif. of implementation given by way of illustration with reference to the single appended figure which represents a diagram of the device.
En référence à cette figure, une extrudeuse 20 réalise la gaine du câble 11 sur l'âme 10 de ce câble. A titre d'exemple, l'âme d'un câble à fibres optiques est souvent20 constituée d'un jonc à porteur central, les fibres étant disposées dans des rainures hélicoïdales ménagées sur la périphérie du jonc. Cette gaine est par exemple en polyéthylène. Comme déjà mentionné, les chambres de dépôt connues dans ce type d'applications sont difficiles à mettre en oeuvre pour maîtriser la quantité ou l'épaisseur du matériau déposé. Ainsi, à la sortie de cette extrudeuse 20, le câble 11 est introduit dans un organe de dépôt 21 pour revêtir la gaine d'une couche de matériau lubrifiant. Cet organe 21 prend la forme d'une chambre de pulvérisation en phase plasma, technique connue sous le terme de "sputtering" en langage anglo-saxon. Le matériau lubrifiant présente un très faible coefficient de frottement vis à vis de la surface interne de la conduite dans laquelle le câble doit être engagé. Les produits à base de polytetrafluoroéthylène sont bien connus pour une telle caractéristique mécanique et ils conviennent donc bien dans le cas présent. On peut également choisir un With reference to this figure, an extruder 20 produces the sheath of the cable 11 on the core 10 of this cable. For example, the core of an optical fiber cable often consists of a central carrier rod, the fibers being arranged in helical grooves formed on the periphery of the rod. This sheath is for example made of polyethylene. As already mentioned, the deposition chambers known in this type of application are difficult to implement in order to control the quantity or the thickness of the material deposited. Thus, at the outlet of this extruder 20, the cable 11 is introduced into a deposition member 21 to coat the sheath with a layer of lubricating material. This member 21 takes the form of a plasma phase spraying chamber, a technique known under the term "sputtering" in English language. The lubricating material has a very low coefficient of friction with respect to the internal surface of the pipe in which the cable is to be engaged. Products based on polytetrafluoroethylene are well known for such a mechanical characteristic and they are therefore suitable in the present case. You can also choose a
matériau inorganique.inorganic material.
Le câble 11 est ensuite refroidi dans un bac de The cable 11 is then cooled in a tank of
refroidissement 22.cooling 22.
L'invention ne se limite pas aux exemples de réalisations décrits ci-dessus. En particulier, il est The invention is not limited to the examples of embodiments described above. In particular, it is
possible de remplacer tout moyen par un moyen équivalent. possible to replace any means by equivalent means.
Claims (6)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9711937A FR2768848B1 (en) | 1997-09-25 | 1997-09-25 | DEVICE FOR DEPOSITING A SOLID LUBRICANT ON A CABLE |
EP98402348A EP0905717A1 (en) | 1997-09-25 | 1998-09-24 | Device for coating a solid lubricant on a cable |
JP27024198A JPH11167053A (en) | 1997-09-25 | 1998-09-24 | Device for adhering solid lubricant to cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9711937A FR2768848B1 (en) | 1997-09-25 | 1997-09-25 | DEVICE FOR DEPOSITING A SOLID LUBRICANT ON A CABLE |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2768848A1 true FR2768848A1 (en) | 1999-03-26 |
FR2768848B1 FR2768848B1 (en) | 1999-10-22 |
Family
ID=9511465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9711937A Expired - Fee Related FR2768848B1 (en) | 1997-09-25 | 1997-09-25 | DEVICE FOR DEPOSITING A SOLID LUBRICANT ON A CABLE |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0905717A1 (en) |
JP (1) | JPH11167053A (en) |
FR (1) | FR2768848B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0981136B8 (en) * | 1998-08-19 | 2004-09-08 | Pirelli Cables y Sistemas, S.A. | Electrical cable and method and equipment for the obtention thereof |
DE10149834A1 (en) * | 2001-10-09 | 2003-04-17 | Nexans | Process for coating a shaped body made of polymeric material |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2528307A1 (en) * | 1975-06-23 | 1977-01-13 | Siemens Ag | Multi core flexible electric cable with lubricant coated cores - which is capable of withstanding high alternating bending stress |
DE2545931A1 (en) * | 1975-10-14 | 1977-04-21 | Felten & Guilleaume Carlswerk | Injecting foamed plastic insulation into coaxial cables - to obtain controlled expansion and form uniform cell structure, aided by lubricant addition |
DE3429745A1 (en) * | 1984-08-13 | 1986-02-20 | Lapp GmbH, 7000 Stuttgart | Process for increasing the output of cable-sheathing installations |
JPS6328855A (en) * | 1986-07-21 | 1988-02-06 | Nippon Telegr & Teleph Corp <Ntt> | Production of fluorocarbon-base solid lubricative film |
-
1997
- 1997-09-25 FR FR9711937A patent/FR2768848B1/en not_active Expired - Fee Related
-
1998
- 1998-09-24 JP JP27024198A patent/JPH11167053A/en active Pending
- 1998-09-24 EP EP98402348A patent/EP0905717A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2528307A1 (en) * | 1975-06-23 | 1977-01-13 | Siemens Ag | Multi core flexible electric cable with lubricant coated cores - which is capable of withstanding high alternating bending stress |
DE2545931A1 (en) * | 1975-10-14 | 1977-04-21 | Felten & Guilleaume Carlswerk | Injecting foamed plastic insulation into coaxial cables - to obtain controlled expansion and form uniform cell structure, aided by lubricant addition |
DE3429745A1 (en) * | 1984-08-13 | 1986-02-20 | Lapp GmbH, 7000 Stuttgart | Process for increasing the output of cable-sheathing installations |
JPS6328855A (en) * | 1986-07-21 | 1988-02-06 | Nippon Telegr & Teleph Corp <Ntt> | Production of fluorocarbon-base solid lubricative film |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 8811, Derwent World Patents Index; Class E36, AN 88-074496, XP002066295 * |
Also Published As
Publication number | Publication date |
---|---|
EP0905717A1 (en) | 1999-03-31 |
JPH11167053A (en) | 1999-06-22 |
FR2768848B1 (en) | 1999-10-22 |
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CD | Change of name or company name | ||
ST | Notification of lapse |