Claims
- 1. A production-line installation for manufacturing electric cable having an assembly of individual conductors and a jacket, comprising:
- payout means for unreeling a web of insulated conductors and a jacket, comprising:
- payout means for unreeling a web of insulated conductors having each an insulating sheath,
- first and second stranding units having parallel axes, said second unit being situated downstream from said first unit, said units being arranged for stranding said conductors into a number of separate parallel strands over successive grouped segments of said web, having predetermined lengths,
- a welding station including a plurality of guiding and clamping means, for bonding said sheaths parallel to one another over successive intermediate bonded segments of said web having predetermined intermediate lengths and located between said grouped segments, and
- a main stranding device situated downstream from said welding station, for stranding said assembly.
- 2. The installation of claim 1, wherein said welding station is situated at a fixed location, further comprising a carriage reciprocating forward and backward relative to said welding station, said second stranding unit being mounted on said carriage, the forward movement of said carriage causing the web of conductors to advance, the backward movement of said carriage causing the formation of strands of a grouped segment, the web then being fixed and said welding station being in operation.
- 3. The installation of claim 1, wherein said guiding and clamping means are arranged to clamp the conductors at two locations spaced by a distance at least equal to said predetermined intermediate length and to keep them parallel in the same plane in the form of a web.
- 4. The installation of claim 1, further comprising an intermittent-sheathing station associated with said second stranding unit capable of preparing and positioning a bare conductor provided with lengths of sheathing and constituting a ground conductor.
- 5. The installation of claim 4, wherein said intermittent-sheathing station comprises first means for guiding an axially-moving empty sheath, a fixed blade associated with said first means for slitting and opening the sheath lengthwise, and second means for continuously introducing a bare conductor into the empty and opened sheath.
- 6. The installation of claim 5, further comprising means associated with said welding station for severing the sheath along a plane perpendicular to the axis thereof.
- 7. The installation of claim 1, further comprising means for causing a ground conductor associated with a grouped segment to be longer than said predetermined length of said grouped segments.
- 8. The installation of claim 7, further comprising means attached to said welding station and including a part for gripping the ground conductor downstream from a bonded segment and a part for providing an excess length of bare ground conductor by pulling it through said intermittent-sheathing station and placing it above the corresponding web of grouped conductors.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5052/87 |
Dec 1986 |
CHX |
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Parent Case Info
This is a Division of application Ser. No. 07/130,633 filed Dec. 9, 1987 and now U.S. Pat. No. 4,837,405.
US Referenced Citations (8)
Foreign Referenced Citations (4)
Number |
Date |
Country |
2709129 |
Aug 1978 |
DEX |
2715585 |
Oct 1978 |
DEX |
20578 |
Feb 1978 |
JPX |
1432548 |
Apr 1976 |
GBX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
130633 |
Dec 1987 |
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