EP0003673A1 - Pulverschubvorrichtung zum Auffüllen eines Kabels - Google Patents

Pulverschubvorrichtung zum Auffüllen eines Kabels Download PDF

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Publication number
EP0003673A1
EP0003673A1 EP79300185A EP79300185A EP0003673A1 EP 0003673 A1 EP0003673 A1 EP 0003673A1 EP 79300185 A EP79300185 A EP 79300185A EP 79300185 A EP79300185 A EP 79300185A EP 0003673 A1 EP0003673 A1 EP 0003673A1
Authority
EP
European Patent Office
Prior art keywords
housing
powder
chamber
passageway
hub
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.)
Withdrawn
Application number
EP79300185A
Other languages
English (en)
French (fr)
Inventor
Jorg-Hein Walling
Jean Bouffard
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of EP0003673A1 publication Critical patent/EP0003673A1/de
Withdrawn legal-status Critical Current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
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/32—Filling or coating with impervious material
    • H01B13/321—Filling or coating with impervious material the material being a powder

Definitions

  • This invention relates to the production of multi-strand electrical cables and more particularly to filling the interstices of such cables with powder.
  • Multi-stranded electrical cables are filled with powder for water blockage.
  • a powder filling for this purpose is described in United States Patent No. 4,002,819 issued llth January 1977 to Northern Telecom Limited assignee of Leo. V. Woytiuk.
  • One method of filling the interstices of the cable is by_passing the cable core through an electrostatic powder chamber as described in United States Patent No. 4,100,002 issued llth July 1978 in the name of Leo V. Woytiuk assignor to Northern Telecom Limited.
  • Such a method is relatively difficult to operate to obtain fine adjustments in the amount of powder filling placed within the interstices of the cable, i.e. the percentage of voids filled by the powder.
  • the invention consists of a device for filling the interstices of multi-stranded cable with powder, comprising: a cylindrical housing; a tube concentric with the housing and spaced inwardly therefrom to form an annular chamber, the tube flaring outwardly at the inlet end thereof, the chamber being closed at each end thereof and opening annularly into the tube adjacent said inlet end; powder feeding means opening into the housing; and means to move powder from the hopper opening to the annular opening and therethrough into the tube.
  • FIG. 1 of the drawings consists of a cable filling device 10 having a cylindrical housing 12 and a coaxial tube 14 spaced inwardly from the housing to provide an annular chamber 16.
  • Tube 14 flares outwardly adjacent its inlet end 18 to meet the end of housing 12 and to close one end of chamber 16.
  • a circumferential row of parallel, spaced slots 20 is located in tube 14 adjacent inlet end 18.
  • a helical screw member 22 is located in chamber 16 with one end terminating adjacent slots 20.
  • the end of screw 22 remote from slots 20 is fixed to an annular hub 24 of a great 26 which is coaxial with housing 12 and tube 14.
  • Gear 26 meshes with a drive gear 28.
  • Hub 24 closes chamber 16 at the outlet end 30 of tube 14 and the hub is freely rotatable axially on the tube.
  • Powder feeding means in the form of a hopper 32 is mounted on housing 12 and opens laterally into chamber 16 adjacent hub 24 through an aperture 34 in the housing.
  • a core 40 is continuously fed axially through tube 14 from inlet end 18 to outlet end 30 of the tube.
  • a number of conductors 42 are fed into inlet end 18 of tube 14, for example from a multi-cage strander, and spirally wound on core 40.
  • a powder mixture 43 of predetermined blend is passed in a continuous flow, or as needed, into hopper 32 from an inlet conduit 44.
  • the powder from hopper 32 passes through aperture 34 in housing 12 into chamber 16 and is carried forward in the chamber by the axial rotation of helical screw 22 which is driven by gear 28 through gear 26.
  • the powder mixture reaches the end portion of chamber 16 adjacent inlet end 18 of tube 14 it passes through slots 20 in the tube and onto core 40.
  • the lateral movement of conductors 42 as they are wound about core 40 assists in the movement of the powder against the core.
  • the amount of powder applied to core 40 is governed by the speed of travel of the core, the size of slots 20, the speed of axial rotation of helical screw 22 and the pitch of the screw.
  • the application of the powder to core 40 is aided by sloping slots 22 with respect to the axial plane of tube 14 and in the direction of the slope of conductors 42 as seen in Figure 1.
  • hopper 32 of the previous embodiment is modified to provide a fluidized bed of powder.
  • a hopper 60 opening onto housing 12 through an aperture 61, has a porous side wall 62 circumscribed by an annular housing 64 forming a plenum chamber 66 with an air inlet 68.
  • Side wall 62 is connected with a vibrator indication schematically by numeral 70.
  • powder flows into hopper 60 from a conduit 72, either continuously or intermittently as required to keep the hopper filled.
  • Air is introduced under pressure through inlet 68 and passes from plenum chamber 66 through porous wall 62 into hopper 60.
  • hopper 60 is oscillated by vibrator 70 and powder within the hopper forms a fluidized bed 74. This activated state of the powder mixture facilitates its movement through chamber 16 and onto core 40.
  • the further alternative embodiment consists of a tube 80 flaring outwardly at its inlet end 82 with a circumferential row of parallel, spaced slots 84 located in the wall of the tube adjacent its inlet end.
  • a circular housing 86 circumscribing tube 80 adjacent inlet end 82 defines a chamber 88 which contains a spiral feeder 90 fixed on an end plate 92 having a collar 94 projecting outside the housing and carrying an annular gear 96 engagable with a drive gear 98.
  • a hopper 100 opens through an aperture 102 in housing 86 into chamber 88.
  • hopper 100 has a porous side wall 104 circumscribed by an annular housing 106 forming a plenum chamber 108 with an inlet 110. Side wall 104 is connected with a vibrator 112.
  • powder is introduced into hopper 100 through a conduit 114 as required to keep the hopper filled.
  • Vibrator 112 oscillates hopper 100 and air under pressure enters through porous wall 104 to form a fluidized bed 116 of powder in the hopper.
  • spiral feeder 90 is rotated by drive gear 98.
  • the core and strands have been omitted but they pass through tube 80 in the same manner as in the previously described embodiments. Powder from hopper 100 passing through aperture 102 of housing 86 into chamber 88 is picked up by feeder 90 and moved towards slots 84 as the spiral feeder rotates, finally being forced through slots 84 onto the core within tube 80.
  • types of mechanisms for driving helical screw 22 may be employed other than meshing gears 26 and 28, for example a worm gear and screw, a belt and pulley, or a chain and sprocket may be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP79300185A 1978-02-08 1979-02-06 Pulverschubvorrichtung zum Auffüllen eines Kabels Withdrawn EP0003673A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA296624 1978-02-08
CA296,624A CA1062896A (en) 1978-02-08 1978-02-08 Powder pushing device for filling cable

Publications (1)

Publication Number Publication Date
EP0003673A1 true EP0003673A1 (de) 1979-08-22

Family

ID=4110735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79300185A Withdrawn EP0003673A1 (de) 1978-02-08 1979-02-06 Pulverschubvorrichtung zum Auffüllen eines Kabels

Country Status (4)

Country Link
EP (1) EP0003673A1 (de)
JP (1) JPS54113884A (de)
CA (1) CA1062896A (de)
ES (1) ES477560A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027831A1 (de) * 1978-04-27 1981-05-06 Northern Telecom Limited Pulver-Ausstossdüse für Verseilanlage
CN113963864A (zh) * 2021-10-15 2022-01-21 富通集团（嘉善）通信技术有限公司 一种线缆生产用滑石粉施粉装置
CN114334298A (zh) * 2022-01-11 2022-04-12 温州网牌电线电缆有限公司 一种高屏蔽抗辐射自承式电力电缆制造工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3723632A1 (de) * 1987-07-17 1989-02-02 Frisch Kabel Verseilmaschf Verfahren und vorrichtung zum fuellen eines aus einzelelementen bestehenden stranges

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE822261C (de) * 1949-07-07 1951-11-26 Wilhelm Keune Spritzmaschine zum Erzeugen von gestreiften Isolierstoffmaenteln auf elektrischen Leitern oder zur Herstellung von gestreiften Schlaeuchen oder aehnlichen fortlaufenden hohlen oder vollen Gebilden
US2760229A (en) * 1952-09-20 1956-08-28 Lewis Eng Co Apparatus for applying plastic coating to wire
DE1016008B (de) * 1953-01-17 1957-09-19 Felten & Guilleaume Carlswerk Schneckenpresse
US3285224A (en) * 1963-07-09 1966-11-15 Western Electric Co Apparatus for applying a coating material to an elongated longitudinally advancing article
FR2208168A2 (de) * 1972-11-24 1974-06-21 British Insulated Callenders

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE822261C (de) * 1949-07-07 1951-11-26 Wilhelm Keune Spritzmaschine zum Erzeugen von gestreiften Isolierstoffmaenteln auf elektrischen Leitern oder zur Herstellung von gestreiften Schlaeuchen oder aehnlichen fortlaufenden hohlen oder vollen Gebilden
US2760229A (en) * 1952-09-20 1956-08-28 Lewis Eng Co Apparatus for applying plastic coating to wire
DE1016008B (de) * 1953-01-17 1957-09-19 Felten & Guilleaume Carlswerk Schneckenpresse
US3285224A (en) * 1963-07-09 1966-11-15 Western Electric Co Apparatus for applying a coating material to an elongated longitudinally advancing article
FR2208168A2 (de) * 1972-11-24 1974-06-21 British Insulated Callenders

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027831A1 (de) * 1978-04-27 1981-05-06 Northern Telecom Limited Pulver-Ausstossdüse für Verseilanlage
CN113963864A (zh) * 2021-10-15 2022-01-21 富通集团（嘉善）通信技术有限公司 一种线缆生产用滑石粉施粉装置
CN113963864B (zh) * 2021-10-15 2024-01-19 富通集团（嘉善）通信技术有限公司 一种线缆生产用滑石粉施粉装置
CN114334298A (zh) * 2022-01-11 2022-04-12 温州网牌电线电缆有限公司 一种高屏蔽抗辐射自承式电力电缆制造工艺
CN114334298B (zh) * 2022-01-11 2024-01-12 温州网牌电线电缆有限公司 一种自承式电力电缆制造工艺

Also Published As

Publication number Publication date
ES477560A1 (es) 1980-04-01
JPS54113884A (en) 1979-09-05
CA1062896A (en) 1979-09-25

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT NL

17P Request for examination filed
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19810821

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WALLING, JORG-HEIN

Inventor name: BOUFFARD, JEAN