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
• • 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
  • H01B7/08—Flat or ribbon cables
  • H01B7/0823—Parallel wires, incorporated in a flat insulating profile

Definitions

• the invention relates to a method and a device for producing a multi - conductor cable, in particular a flat cable, which in the preamble of claim 1 or. of claim 9 defined genus.
• Multi-conductor cables are widely used in computers and in control systems, e.g. B. used for machine tools. They have a certain flexibility, so that they can be installed largely arbitrarily with sufficient installation space.
• the invention has for its object to provide a method and apparatus for producing a multi-conductor cable, in particular ribbon cable, with the manufacturing technology advantageously a high quality, highly flexible multi-conductor cable, especially ribbon cable, can be made for universal cable management in limited installation spaces.
• the inventive method and the device according to the invention have the advantage that by clamping the Conductor bundles and tightening the conductor sections located between the two terminal points an exact parallel alignment of the conductor is achieved before encapsulation with the highly elastic plastic, so that a high-strength insulation is ensured between the conductors.
• successively repeating the method steps on successive longitudinal sections of the conductor bundle successively predeterminable longitudinal sections of the conductor bundle can be directed and encapsulated, whereby the adjoining encasing lengths overlap at the interfaces and connect with one another during the casting process. In this way, any length, highly flexible multi-conductor cable of the highest quality can be manufactured.
• the conductors can be used as individual wires, z. B. Copper wires, or be performed as twisted strands or sheathed cores.
• Fig. 1 is an exploded view of an apparatus for manufacturing a ribbon cable
• Fig. 2 is an enlarged view of the detail II in FIG. 1.
• the in Fig. 1 device shown in a perspective view is used to produce a highly flexible ribbon cable 10 as an exemplary embodiment of a general multi-conductor cable.
• a ribbon cable 10 has a plurality of mutually parallel electrical conductors 11 which are embedded in an insulating jacket 12.
• the electrical conductors 11 may be single cores, z. B. Copper wires, or twisted strands or sheathed wires.
• the device has a casting mold 13 with two mold parts 14, 15, which are superposed with two mutually facing mold surfaces 141, 151 and detachably connectable.
• the connection of the two mold parts 14, 15 carried by bolts 16 which are passed through through holes 17 in the upper mold part 14 and screwed into threaded holes 18 in the lower mold part 15.
• a longitudinally delimited groove 19 extending in the longitudinal direction of the molded part 15 is incorporated, into which two transverse filling grooves 20, 21 open.
• the mouths of the filling grooves 20, 21 are in each case close to a groove end of the groove 19.
• a guide region 22 or 23 adjoins the section-wise insertion of a conductor bundle 24 of a plurality of electrical conductors 11.
• Each guide region 22, 23 consists of an array of parallel grooves 25 which extend from the end of the groove to the front end of the molding 15 in each case and run out freely at the end of the molding surface 151.
• the radius of the identically formed grooves 25 is slightly larger dimensioned as the radius of an electrical conductor 11, so that the inserted in the grooves 25 conductor 11 in the grooves 25 are able to move axially.
• the in Fig. 1 non-visible molding surface 141 of the molding 14 is formed in the same manner as described for the molding surface 151.
• the grooves 19 When juxtaposing the two mold parts 14, 15 with their forming surfaces 141, 151, the grooves 19, the filling grooves 20, 21 and the grooves 25 in the upper mold surface 141 and in the lower mold surface 151 j each congruent to each other, so that the grooves 19 a Casting, the filling grooves 20, 21 two filling channels for filling of plastic in the casting chamber and the grooves 25 closed guide channels for the individual conductors 11 form.
• At j edem front end of the mold 13 is formed by two clamping pieces 261, 262 and 271, 272 clamping piece pair 26 and. 27 arranged.
• the clamping piece pairs 26, 27 are used to clamp the conductor bundle 24 before or. behind a guide region 22, 23.
• the in Fig. 1 rear clamping piece pair 26 is fixed to the mold 13, while the front clamping piece pair 27 is slidably disposed in the longitudinal direction of the mold 13.
• the lower clamping piece 262 of the rear clamping piece pair 26 is in the embodiment of FIG. 1 is integrally formed with the lower mold part 15 of the mold 13, but may also be separated from the molded part 14, so that the two mold parts 14, 15 can be formed identically.
• the upper clamping piece 261 of the rear clamping piece pair 26 is guided axially displaceably on two strictlysbol zen 28, wherein the guide pins 28 are pressed into receiving holes 34 in the lower clamping piece 262 and projecting at right angles to the molding surface 151 on this.
• bolts 29 through through holes 30 in the upper clamping piece 261 passed and screwed into threaded holes 31 in the lower clamping piece 262 the upper clamping piece 261 can be clamped on the lower clamping piece 262.
• the lower clamping piece 272 is guided on guide pins 32 in the longitudinal direction of the molding 15 slidably.
• the guide pins 32 are pressed into corresponding receiving bores 33, which are introduced into the lower mold part 15 of the casting mold 13 from the end face 152 thereof.
• a parallel to the foundedsbol zen 32 extending through hole 35 is introduced, which has a not visible here inner threaded portion.
• a screw bolt 36 with an externally threaded portion 361 (FIG. 2) can be screwed, wherein the bolt end is supported on the end face 152 of the lower mold part 15.
• the distance of the lower clamping piece 272 of the end face 152 of the lower mold part 15 is increased or decreased.
• the upper clamping piece 271 is slidably guided in the same manner as the clamping piece 261 of the rear clamping piece pair 26 on guide pins 40 which are pressed into receiving holes 41 in the lower clamping piece 272, wherein the guide pins 40 are aligned at right angles to the forming surface 151.
• bolts 37 which are inserted through through holes 38 in the upper clamping piece 271 and in threaded holes 39 in the lower clamping piece 272 can be screwed, the upper clamping piece 271 on the lower clamping piece 272 can be clamped.
• a groove arrangement 42 of parallel grooves (FIG. 25) in the guide areas 22, 23 are aligned and in each case extend over the full clamping surface 262a, 272a.
• the radii of the grooves 43 are dimensioned smaller, so that when the clamping pieces 261, 262 and / or. 271, 272 which are clamped in the grooves 43 conductor sections force and positively clamped.
• the highly flexible ribbon cable 10 is manufactured as follows.
• a conductor bundle 24 which has any desired number of conductors 11, which are provided only by the number of grooves 25 in the guide regions 22, 23 of the molding surfaces 141, 151 and.
• Rillenan angelen 42 is limited to the clamping surfaces of the clamping pieces 261, 262, 271, 272, is inserted after degreasing and drying of the conductor 11 with the mold open 13 between the two mold parts 14, 15, wherein in a rear bundle region, the conductor 11 with a conductor section in the grooves 25 in the rear guide portion 22 and in the grooves 43 of the groove assembly 42 on the lower clamping piece 262 a of the rear clamping piece pair 26 are inserted.
• the upper clamping piece 261 of the rear clamping piece pair 26 is placed on the bundle region and braced on the lower clamping piece 262 by means of the threaded bolts 29.
• the ladder 11 in a front Bundling portion with a conductor portion in the grooves 25 of the front guide portion 23 on the forming surface 151 of the lower mold part 15 and in the grooves 43 of the groove assembly 42 on the clamping surface 272 a of the lower clamping piece 272 of the front clamping piece pair 27 inserted.
• the upper clamping piece 271 of the front clamping piece pair 27 is clamped on the lower clamping piece 272 by means of the bolts 37.
• the lower clamping piece 272 increasingly pressed from the end face 152 of the lower mold part 15, whereby the lying between the two clamping piece pairs 26, 27 sections of the conductors 11 are tightened and aligned in the groove 19 exactly parallel.
• the mold 13 is closed by the upper mold part 14 is placed on the lower mold part 15 and clamped by means of the screw bolt 16 on the lower mold part 15.
• a high-elasticity plastic which can be processed by casting is introduced.
• the plastic used is preferably a two-component silicone elastomer.
• This plastic fills the casting space formed by the two congruent superimposed grooves 19 in the mold surfaces 141 and 151 of the two superimposed mold parts 14, 15 and encloses each of the ladder sections of the ladder 11 aligned parallel in the pouring space.
• a highly flexible plastic encapsulation 44 is formed that reliably isolates the individual conductors 11 from each other and to the outside.
• Plastic encapsulation 44 removed from the mold 13, as this in Fig. 1 is shown.
• the conductor bundle 24 is now shifted in the direction of arrow 45 until the in Fig. 1 front end of the plastic encapsulation 44 protrudes slightly beyond the rear groove end of the groove 19 in the groove 19. Then, the conductor bundle 24 is clamped in the region of the plastic encapsulation 44 with the rear clamping piece pair 26.
• the conductor bundle 24 is inserted with conductor portions of the individual free conductor 11 in the grooves 25 in the front guide portion 23 on the forming surface 151 of the lower mold part 15, wherein the conductor sections in the grooves 43 of the groove assembly 42 on the clamping surface 272 a of the lower clamping piece 272 of the front Continue clamping pair pairs 27.
• the front clamping piece pair 27 is closed and withdrawn from the casting mold 13 until the running in the groove 19 individual conductors 11 are tightened and thus parallel to each other. Then the mold 13 is closed and the plastic filled.
• the result is a further plastic encapsulation 44, which adjoins seamlessly to the previously cast plastic encapsulation 44 and overlaps the latter at the seam, with the edges of the two plastic encapsulations 44 flowing together during the second casting process.
• the casting mold 13 is opened again and the method steps described above are followed again by the bundle of conductors 24 displaced by the length of the renewed plastic encapsulation 40 in the direction of the arrow 45.
• the individual process steps are repeated with successive displacement of the sheathed part of the conductor bundle 24 until a predetermined length of the ribbon cable 10 has been produced.
• the guide portions 22, 23 are not formed directly in the mold surface 141, 151 of the mold parts 14, 15, but on interchangeable adapters, which are flush at the same locations in the mold surfaces 141, 151 become .
• clamping surfaces 262a and 272a on the clamping piece pairs 26, 27 by replacing the clamping pieces 261, 262 or. 271, 272 are changed. This makes it possible not only extend the ribbon cable 10 elongated, but also form curvatures between cable sections, wherein the parallel conductor 11 is still in the plane of the cable.

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Citations (3)

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• 2004
  • 2004-12-21 DE DE200410061353 patent/DE102004061353B3/de not_active Expired - Fee Related
• 2005
  • 2005-12-13 EP EP05818734A patent/EP1829060A1/de not_active Withdrawn
  • 2005-12-13 WO PCT/EP2005/013358 patent/WO2006066754A1/de active Application Filing

Patent Citations (3)

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