The stranding technology supports the stranding of jelly-filled as well as FTTH Cable Production Line styles. Stranding can be carried out possibly as a stand-alone process or tandemized with the jacketing process. Advanced new technological options like torsion shaft lay-dish SZ stranding devices, dual go across binders having an sufficient line manage system permit a controlled stranding procedure. Every single stranding disc is separately driven by way of a the right time belt without intermediate gear.

The stranding procedure guarantees in every circumstances reduced stranding tension change, accurate and stable lay length and continuous binding stress.

SZ Stranding is the process of twisting Tubes or Wires right into a cable framework under controlled conditions. The pipes/wires are guided via a series of rotating discs. The disks will rotate until up to 14 transforms in one direction is achieved. The discs then reverse and twist the pipe/wires up to 14 turns inside the opposite direction. For this reason SZ stranding action, the pay-off reels or perhaps the consider-up do not have to spin in order to manufacture a cable and also this results in higher line rates of speed. The tubes /cables are kept in location right after SZ stranding with a polyester or even a similar binder materials.

The Tensor ‘EXCEL STRAND’ SZ Stranding line has been developed after years of experience providing stranding outlines throughout the world. We stay on the leading edge of technology making use of the newest electronics, drives and motor combinations to accomplish repeatable and reliable performance. The SZ Stranding line may be set up in many various ways dependant upon the customer requirements. Some stranding lines have 6 pay-offs whilst other lines have 24 or even more pay out-offs. Other peripheral equipment may be added to the SZ Stranding line such as water blocking gel or tape, aramid yarn servers and in some cases even an extruder. Every line is custom built dependant upon the consumer needs and imagination.

A system and way of identifying the set period of S-Z stranded buffer pipes during the manufacturing procedure for a fiber optic cable without having reducing the production process. Pictures of an S-Z stranded barrier pipe are captured with a camera. The pictures are delivered from your camera to some computer work station. The pc work station shows the images taken using the digital camera and executes coding modules that determine the set entire S-Z stranded barrier tube through the manufacturing procedure for the cable. Enter devices like a computer mouse along with a key pad may be used along with the operations from the personal computer workstation. By measuring the lay duration throughout cable produce, productivity might be maintained whilst making certain the stranding of Optical Fiber Coloring Machine does not drop out of tolerance, that might result in deleterious twisting stress of optical fibers within the buffer pipes.

The current creation relates to optical fiber cables that have buffer pipes organized in S-Z strands, as well as in particular a way of determining the lay duration of this kind of S-Z strands throughout the production process.In telecommunication wires, visual fibers or optical fiber ribbons are often used as a medium to deliver optical signals. These cables often have a central strength member, for instance a steel rod or stuck metal cables, that extends longitudinally over the main axis from the cable. As shown in FIG. 1 (from U.S. Patent No. 5,229,851, which is incorporated by guide), main strength fellow member 2 is meant to withstand and resist any tensile or compressive pressure applied axially for the cable 1. The central strength member 2 is usually encircled with a covering 3, which can work as a padding materials. A plurality of plastic buffer tubes 4-8 surround covering 3 and loosely house protect visual fibers or ribbons within them.

A binder thread or threads 17 and 18 tend to be contra helically applied about buffer pipes 4-8 to carry them set up. A water swellable adhesive tape (not shown) might be used on the barrier tubes to bar water ingress to the cable. A general plastic material coat 20 then covers the valuables in visual fiber cable 1. In the event the intended installation for cable 1 requires extra mechanical strength, the cable might include additional power members as armor or strength yarns 19 positioned intermediate the water swellable tape and the jacket.As demonstrated in FIG. 1, barrier tubes 4-8 are generally wrapped about central strength member 2 within a change helix or “S-Z” fashion. The places in which the stranded tubes reverse direction (e.g. from an “S” to a “Z”) are known as reversal factors. S-Z stranding of barrier tubes in general, as well as the reversal factors particularly, are beneficial for obtaining the cable midspan. That is certainly, due to the S-Z stranding, one or even more visual fibers within the cable could be “tapped” on the reversal factors while not having to sever the cable or to carry out significant reconfiguration. The S-Z stranding offers sufficient extra of pipe duration to help make the faucet simple by opening along side it from the cable at a stage together its length without losing the preferred slack inside the ribbon units or visual fibers in the pipe that is opened.

Thus, faucets inside an S-Z stranded cable can be made without having interrupting other tubes or ribbon models.To ensure that the visual fibers inside the barrier pipes are certainly not exposed to bending anxiety, which might cause unwanted attenuation, a parameter from the S-Z stranded barrier tubes called “lay length” has to be monitored. Bending stress is a loss mechanism in visual fibers that may happen in the event the cable is put through tensile forces, possibly from installation or temperature, or compression causes. Twisting stress could cause transmission loss in the visual fibers. The S-Z strand of buffer tubes within an visual fiber cable may take a number of forms. Each ‘S’ turn may be implemented immediately with a reversal to a ‘Z’ stranding path. Alternatively, there could be a number of helical turns among reversals. Generally speaking, then, the average set duration is based on the distance between reversal points divided by the amount of turns among reversals.The particular set period of every person S-Z stranded pipe can vary from your average lay duration with a small amount because of extra twisting and handling conditions. That is certainly, the lay length of virtually any tube, might be essentially compared to the typical lay duration, as a provided pipe might make greater than a entire variety of transforms among reversals. For example, in a cable with 6 various coloured buffer tubes, one becoming red-colored, and all sorts of S-Z stuck around a main member, the red tube might be at the very top or at the 12o’clock position around the cable in the first reversal stage.

But at the following reversal stage the red-colored tube might be in the 6 o’clock place in the cable, 3 pipes taken off the 12 o’clock position. Thus, the red-colored tube went one half turn much more among reversals. This half-transform must be within the set duration calculation for the most accuracy. Thus, the specific set period of a given S-Z stranded Optical Fiber Ribbon Machine includes a number of components and may be calculated to seal approximation by:Set Duration = D/N,where:N = N’ n/T in which D is the axial range in between the reversal points, N is the quantity of transforms between reversals, and N’ is the quantity of whole turns involving the reversal factors; n is the amount of pipes that your given tube is counteract from the angular position on the earlier reversal point, counted in the direction of rotation; and T is definitely the complete number of buffer pipes.To guard against twisting anxiety on the visual fibers, the lay entire S-Z stuck buffer tubes is checked on finished cable to confirm that this lay length is within appropriate specifications. The only method to look at the lay duration on completed wires is to strip back again the coat and other levels within the cable over the barrier tubes. It is really not adequate to achieve this on the cable ends as the start-up and complete of the stranding process might have been done at conditions that change from the rest of the cable. Rather, lay duration has zzgjup calculated manually through the production process right after stranding. The line operator would make the length measurement whilst strolling alongside the progressing cable, that was fairly easy to accomplish precisely because line rates of speed were slow. Recently, however, line rates of speed have risen significantly, making this kind of manual way of measuring inaccurate. One alternative is always to quit the line occasionally to take measurements.

FTTH Cable Production Line – Keep This In Mind..

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