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
  • H01B13/02—Stranding-up
  • H01B13/0271—Alternate stranding processes
• • 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
  • H01B13/02—Stranding-up
  • H01B13/0235—Stranding-up by a twisting device situated between a pay-off device and a take-up device

Definitions

• the invention relates to a method for producing in particular sector-shaped Jardinversilonne with alternating direction of impact of individual cable cores along a stranding, in which the individual cable cores aligned in an inlet region, held against rotation and bundled in a stranding strand to a strand, the strand between the first Verseiltician and a second Verseiltician is twisted in the stranding axis and the strand after the second Verseiltician is again held against rotation.
• cable cores are first bundled in a stranding nipple. Subsequently, the cable bundle is fed to two rotors, which form a strand store between them. With the help of the two rotors, the bundled strand is twisted in the stranding axis.
• cables can be made of sector-shaped wires, but there is the further disadvantage that the turning points of the stranding always represent a limitation of the bending behavior in the stranded cable especially for very stiff wires or cables.
• rejects occur after a product change or other business interruption, if in the course of this work a stretched, i. non-stranded product is drawn into the storage section.
• the invention is therefore based on the object to provide a method for producing a Jardinversilung available, which avoids these problems or at least reduced. This object is achieved according to the invention with a method comprising the method steps of claim 1.
• An advantage of the method according to the invention is that after passing through the storage section, a finished stranded product always enters the withdrawal line after the storage line. This is not the case with the method of EP 7473 A, since the strand during the starting process, eg after a product change or another business interruption, can not enter the storage section in a pre-stretched manner, but is inevitably stranded at the two stranding points during the running process. The resulting incorrect lay length over the length of the storage line is lost as waste.
• FIGS. 7 to 11 show a second embodiment of the invention.
• a device with which the method according to the invention can be carried out as known per se from EP 7473 A, for example stationary coil runs 1, of which the sector-shaped wires 2 run to a stationary guide means 3.
• the sector-shaped cores 2 are brought together according to their geometry in the first stranding nipple to form a strand 4.
• the strand 4 is held simultaneously against rotation. That is to say that it does this by means of a first rotor 6 arranged after a first stranding point 5 _
• a second rotor 7 is arranged, which is preferably synchronously, ie with the same direction of rotation and the same speed as the first rotor, 6 driven.
• a take-off device 9 which is preferably designed as a caterpillar take-off.
• the caterpillar take-off 9 captures the torque exerted by the second rotor 7 on the strand 4 and the consequent plastic deformation of the sector-shaped cores 2, without damaging the core insulation.
• the two rotors 6, 7 are preferably designed as non-driven belt rotors which tightly surround the strand 4, but without damaging the core insulation.
• One or both band rotors 6, 7 can also be driven if necessary.
• other known prior art devices may be used instead of tape rotors to twist the strand 4 to make the stranding.
• a yarn or band winder 10 can be provided between the two rotors 6, 7, with which the stranded cores 2, in particular in the region in which they pass from the extended region into the twisted region, are prevented from being turned up or turning back.
• This function can e.g. Also take a rotating roller bar with correspondingly shaped, opposite pressure rollers or a similar construction.
• This device for preventing untwisting or reverse rotation is particularly advantageous if the wires 2 are themselves already stranded bundles of individual wires or strands, since they are substantially more elastic than solid wires 2, which are largely plastically deformed.
• From the prior art (EP 7473 A) it is known that in a change in the direction of rotation in the second Verseilddling strike in alternating direction of impact (SZ beat) as well as a halving of the strike length arise.
• SZ beat alternating direction of impact
• FIGS. 1 to 6 schematically show a first embodiment of the method according to the invention in successive steps.
• the bunched strand entering the stranding point between the stranding points 5 and 8 in the stranding point 5 is twisted by the two rotors 6, 7 rotating to the right, for example (FIG. 1), until the entire storage stretch passes through in this way a right-handed strand is filled (Fig. 2).
• the two rotors 6, 7 are stopped, while the strand continues to be withdrawn at a constant speed through the tape draw 9.
• the strand stranded or twisted to the right thus passes through the second stranding point 8 without being further twisted.
• a stretched, that is not twisted, strand runs through the first stranding point 5 into the storage stretch until the previously twisted strand has completely run out of the storage stretch and the stretched strand has reached the second stranding point 8 (FIG. 3).
• the two rotors 6, 7 are driven again, in the opposite direction of rotation, ie to the left.
• the previously stretched strand, now passing through the second stranding point 8 is now also twisted in the second stranding point 8, a strand with clockwise rotation still being generated by the rotor 7 turning to the left in the stranding point 8.
• a twisted or stranded strand is produced in which the length with a uniform direction of rotation or impact twice as long as the storage section.
• the rotors 6, 7 are then stopped again in the fourth step (FIG. 5), so that the strand turned to the left runs out of the storage path and a stretched strand enters the storage path.
• the rotors 6, 7 are subsequently rotated to the right in the fifth step (FIG. 6), which functionally corresponds to the first step (FIGS. 1 and 2), so that the strand passing through the second stranding point 8 likewise undergoes a left turn, thus altogether again a stranded strand section is generated, which has a left turn over the length of the double storage path.
• the rotational speed of the rotors 6, 7 will also be constant at a constant take-off speed of the strand 4.
• the two rotors 6, 7 not always to run synchronously, but they can be driven temporarily with different speeds and / or rotational directions within individual intervals.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Ropes Or Cables (AREA)
• Processes Specially Adapted For Manufacturing Cables (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38871162

Family Applications (1)

Country Status (2)

Citations (2)

Family Cites Families (3)

• 2006
  • 2006-10-23 AT AT17722006A patent/AT503805B1/de not_active IP Right Cessation
• 2007
  • 2007-10-22 WO PCT/AT2007/000491 patent/WO2008049146A1/de active Application Filing

Patent Citations (2)

Also Published As

Similar Documents

Legal Events