WO1998039782A1 - Method and device for applying a holding element used to fix a stranded cable - Google Patents
Method and device for applying a holding element used to fix a stranded cable Download PDFInfo
- Publication number
- WO1998039782A1 WO1998039782A1 PCT/DE1998/000490 DE9800490W WO9839782A1 WO 1998039782 A1 WO1998039782 A1 WO 1998039782A1 DE 9800490 W DE9800490 W DE 9800490W WO 9839782 A1 WO9839782 A1 WO 9839782A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- holding element
- bundle
- stranding
- stranded
- net
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
- D07B7/02—Machine details; Auxiliary devices
- D07B7/14—Machine details; Auxiliary devices for coating or wrapping ropes, cables, or component strands thereof
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/449—Twisting
Definitions
- the invention has for its object to show a way in which a holding element can be applied to the stranded bundle in a particularly simple manner.
- This object is achieved in a method of the type mentioned at the outset in that, following the stranding process, a holding element is continuously produced for the stranding bundle and is firmly attached to the outer surface of the stranding bundle.
- the invention further relates to a device for performing the method in which a holding element is applied to a strand bundle which consists of a plurality of wires stranded together, and which is characterized in that a device for continuously producing or providing a holding element is provided that this Device is arranged in the connection a stranding device, and that the holding element is applied to the outer surface of the strand bundle.
- the invention further relates to cables manufactured according to one of claims 1 to 13, which is characterized in that it contains at least one strand bundle on which an endless holding element and / or a net-like holding element is applied.
- FIG. 2 shows the stranded bundle according to FIG. 1 in front view
- FIG. 3 in front view an extruder head for producing a holding element corresponding to FIG. 1 in
- FIG. 4 shows a further embodiment of the invention with a reticulated retaining element
- Figure 5 shows another embodiment of the invention.
- wires AD1 to ADx are provided, which are drawn off from supply coils, not shown here. These wires can be insulated electrical conductors for the transmission of messages and / or high current. It However, optical wires can also be provided, in particular in the form of hollow wires, tapes or the like, and it is also possible to use electrical and optical wires in a mixed arrangement.
- the wires AD1 to ADx are fed to a stranding device SU, which is only indicated schematically here, all conventional stranding devices being able to be used here.
- the stranding can, as indicated by the dash-dotted arrow PF2, take place in the same lay.
- Roping with alternating lay direction is preferably provided in accordance with the arrow PF1.
- the wires AD1 to ADx run into an opening OB of an extruder head EK1 shown in FIG. 3, which can also be designed such that it simultaneously forms the stranding point or stranding nipple for the wires AD1 to ADx.
- a central element ZE in FIG. 2 is generally included, which is not shown in FIG. 1 to simplify the illustration.
- the individual cores AD1 to ADx are in the form of a strand bundle BD, which must be held together by means of a holding element for the subsequent processing processes. This is necessary because otherwise the wires AD1 to ADx may be partially roped or open, which would lead to changes in position and to an increase in the diameter of the stranding wire BD.
- securing the position of the cores of the bundle BD by means of an attached holding element is essential in order to prevent the stranding assembly from being released.
- the holding element HE surrounds the stranding bundle BD tightly and exerts a radial force on the individual wires AD1 to ADx which is so large is chosen that the springing open or roping is prevented as far as possible.
- the bundle BD produced in this way which is provided with a holding element, can be subjected to further processing processes (not shown here), in particular, for example, the application of a shield (for electrical wires AD1 to ADx), the application of a single-layer or multilayer outer jacket (indicated) in Figure 2 by a jacket MA, so that a cable CA is formed), a further stranding (bundle stranding) from several such strand bundles, etc. It is also possible, however, to simply drum up the bundle BD initially and thus keep it ready for the further processing operations.
- the holding element HE in the present example consists of a plurality of e.g. elongated, continuous
- Thickness between 0.01 mm and 5 mm, in particular between 0.1 mm and 0.5 mm.
- the cooling device CE which can be operated with air or liquid and leads to rapid solidification of the individual elements FD11 to FDln. After solidification or even in a somewhat soft state, these elements reach the outer surface of the BD twisted bundle and attach themselves there under longitudinal tensile stress. This ensures the position and cohesion for the position securing for the wires ADl to ADx is guaranteed by the radial pressure of the individual elements FD11 to FDln. If the individual elements FD11 to FDln are applied with a corresponding longitudinal tensile stress, then the overall effective holding force is sufficient to ensure that the wires AD1 to ADx are secured in position.
- the pull-off speed of the bundle BD is chosen to be greater than the extrusion speed for the individual elements FD11 to FDln, then these elements are stretched and these are applied to the bundle BD with a corresponding longitudinal tensile stress. It is also possible to use materials for the individual elements FDll to FDln which shrink strongly on cooling and exert a (possibly additional) longitudinal tension and thus radial compressive force on the cores of the bundle BD due to this shrinking force.
- the individual elements FD11 to FDln are expediently applied in an approximately helical shape to the outer surface of the stranding bundle BD, which can be achieved, for example, by the extruder head EK1 rotating about the direction in which the stranding material passes. In this case, rotation in only one direction is generally expedient, this direction advantageously being selected in the opposite direction to the twist-twist direction PF2 of the stranding unit SU.
- the extruder screw is fixed and only the associated extruder or die head rotates.
- the helical application of the holding element HE according to FIG. 1 and FIG. 2 can also be carried out in that the extruder heads EK1 (and possibly EK2) are arranged in a fixed manner (ie not rotating) while the bundle BD executes a continuous rotation about its longitudinal axis.
- This can be achieved, for example, by arranging the drain drums for the cores AD1 to ADx as well as the label drum for the bundle of cores BD in a rotating manner, in the same direction of rotation and with the same number of revolutions.
- a further extruder head EK2 which is preferably chosen to be smaller in outer diameter, is provided, which expediently also rotates (direction of rotation opposite to EK1) and which is otherwise constructed analogously to the extruder head EK1.
- An inner layer of holding elements is applied by this second extruder head EK2, viewed in the direction of flow, in the form of the preferably thread-like individual elements FD21 to FD2m, so that a structure analogous to cross-lay winding or spinning is produced. If the holding elements of the two layers stick together, then an approximately network-like structure of the holding element HE can be realized.
- cross-sectional shapes can also be used, for example ribbon-shaped individual elements, for which the openings e.g. OPll to OPln of the extruder head e.g. EKl are to be formed in the form of longitudinal slots arranged on a circular arc.
- the raw material for the production of the holding element HE can be continuously introduced in the usual manner into the corresponding production device, in the present example thus the extruders, so that changeover or coupling operations etc., as in the case of holding elements removed from supply spools, are omitted and are particularly economical and faster continuous manufacturing process can be carried out.
- Thermoplastic materials such as polyethylene, polypropylene, ethylene vinyl acetate (EVA), etc.
- EVA ethylene vinyl acetate
- Thermoplastic materials are particularly suitable as materials for the production of the holding element HE. 7
- the individual elements FDll - FDln and FD21 - FD2m used to form the holding element can also (e.g. with very large numbers of n and m) e.g. be swirled by a guer-running air flow before hitting bundle BD. It is also possible, if necessary, to additionally glue them together or to fix them in another way on the bundle of cables BD.
- FIG. 4 shows a perspective view of a net-shaped starting material NHE as it is applied to a stranded strand BD as a holding element.
- This net-like starting material NHE can be produced continuously, for example by means of an extruder analogous to FIG. 1, and then subsequently applied immediately and endlessly to the stranding bundle BD.
- the net-shaped starting material can be designed as a flat band or preferably as a net stocking, ie closed in a circle. It is also possible to pull it off a supply reel as a net tape.
- the initially flat-running, here band-shaped, net-shaped starting material NHE is combined in a circular arc and, if necessary, overlapped, so that a closed layer NHEC enclosing the stranding bundle BD is obtained as a holding element corresponding to the holding element HE according to FIG. 2 .
- the advantage of this reticulated, longitudinally running starting material NHE can, among other things, be that it is initially essential can store or produce a wider design, in order to subsequently stretch it accordingly when it is applied to the strand bundle, the change in the direction of passage in the design of the approximately diamond-shaped mesh mesh being indicated in the drawing.
- the abutting edges or overlapping ends in the finished holding element NHEC can be connected to one another, for example by gluing, sewing, welding or the like.
- the abutting edges or overlapping ends can preferably also change their position continuously as seen in the axial direction.
- FIG. 5 shows a schematic representation in side view of a device for producing a bundle provided with a net-shaped holding element corresponding to Figure 4, wherein a supply spool VSNl is provided, from which a net-shaped holding element NHE1 is drawn off and applied to the stranding bundle BD.
- a corresponding merging device FW5 is to be provided analogously to FIG. 4.
- the bundle BD rotates about its longitudinal axis, as indicated by the arrow PF5.
- a second supply spool VSN2 can be used, from which a likewise net-shaped holding element NHE2 runs and is applied to the first layer with the net-shaped holding element NHE1 in the bundle BD (no longer to simplify the representation on the bundle BD drawn) .
- the net-shaped holding elements NHE1 and NHE2 are expediently present on wide coils VSN1 and VSN2 and are, for. B: by means of slots ST1 and ST2 in the guide FW5, elongated with narrowing, similar to that explained in FIG. 4.
- a circular, closed, net-shaped holding element NHEG is assumed, which is based on a Supply spool VSG is arranged rolled up and continuously withdrawn from it.
- This, from the bundle BD through ⁇ running supply spool VSG expediently has a much larger diameter (preferably at least 5 to 20 times as large ) than the outer diameter of the bundle BD, so that due to the stretching process ( reduction in diameter) of the net-shaped holding element NHEG a large gain in processing length is achieved because the change in diameter is reflected in a considerable increase in length.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Ropes Or Cables (AREA)
- Cosmetics (AREA)
- Tires In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98912274A EP0965137A1 (en) | 1997-03-05 | 1998-02-18 | Method and device for applying a holding element used to fix a stranded cable |
CA002283385A CA2283385A1 (en) | 1997-03-05 | 1998-02-18 | Method and apparatus for fixing a stranded cable with a retainer element |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19708961 | 1997-03-05 | ||
DE19708961.5 | 1997-03-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998039782A1 true WO1998039782A1 (en) | 1998-09-11 |
Family
ID=7822310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1998/000490 WO1998039782A1 (en) | 1997-03-05 | 1998-02-18 | Method and device for applying a holding element used to fix a stranded cable |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0965137A1 (en) |
CA (1) | CA2283385A1 (en) |
WO (1) | WO1998039782A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1980002139A1 (en) * | 1979-03-29 | 1980-10-16 | A Regreny | Apparatus for the multiple drawing of fibers allowing the simultaneous drawing of a plurality of optical fibers,then the multifiber cabling on line |
EP0033123A2 (en) * | 1980-01-24 | 1981-08-05 | Siemens Aktiengesellschaft | Process for producing a stranding unit and device for carrying out this process |
DE3914957A1 (en) * | 1988-11-24 | 1990-05-31 | Thaelmann Schwermaschbau Veb | Retro-winder for stranding machine - with two contra-rotating rotors each with run=off spool and fixed guide ring |
-
1998
- 1998-02-18 EP EP98912274A patent/EP0965137A1/en not_active Withdrawn
- 1998-02-18 CA CA002283385A patent/CA2283385A1/en not_active Abandoned
- 1998-02-18 WO PCT/DE1998/000490 patent/WO1998039782A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1980002139A1 (en) * | 1979-03-29 | 1980-10-16 | A Regreny | Apparatus for the multiple drawing of fibers allowing the simultaneous drawing of a plurality of optical fibers,then the multifiber cabling on line |
EP0033123A2 (en) * | 1980-01-24 | 1981-08-05 | Siemens Aktiengesellschaft | Process for producing a stranding unit and device for carrying out this process |
DE3914957A1 (en) * | 1988-11-24 | 1990-05-31 | Thaelmann Schwermaschbau Veb | Retro-winder for stranding machine - with two contra-rotating rotors each with run=off spool and fixed guide ring |
Also Published As
Publication number | Publication date |
---|---|
EP0965137A1 (en) | 1999-12-22 |
CA2283385A1 (en) | 1998-09-11 |
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