Device for passively unwinding and filling water-blocking yarns in dry optical fiber loose tube and unwinding process used in same

Abstract

The invention relates to a device for passively unwinding and filling water-blocking yarns in a dry optical fiber loose tube and an unwinding process used in the same, and belongs to the technical field of optical cable processing. The device consists of an optical fiber pay-off rack, an optical fiber convergence rack, a passive unwinding device, an optical fiber catheter, extrusion molding equipment and an extrusion head die. By adopting the device, the water-blocking yarns are passively unwound and filled in the optical fiber loose tube by the specific unwinding process so that the water-blocking yarns can be stably and uniformly wound in a spiral shape around optical fiber bundles; and the product obtained by the device has the advantages of reliable quality and stable performance. The device has the advantages of simple structure, low manufacturing cost and simple production process, and is convenient for operation and easy for implementation; and the device can be used for solving the problems of the existing filling process by actively wrapping the water-blocking yarns that the requirement for the manufacturing precision of pay-off equipment is high, the required equipment needs to be produced by professional manufacturers, the equipment investment cost is high, the requirements for equipment operators are high and the equipment is difficult to be maintained to cause increase of the production cost. Therefore, the device is applicable to producing various dry optical fiber loose tubes.

Description

technical field [0001] The invention relates to a dry-type optical fiber loose tube water-blocking yarn passive winding and filling device and winding process, belonging to the technical field of optical cable processing. Background technique [0002] Fully dry optical cable is a kind of optical cable produced by dry filling method in communication optical cable. The production of dry optical fiber loose tube in fully dry optical cable has become one of the most critical processes in the entire optical cable production process. At present, two filling methods are generally used to block water in fully dry loose tubes, one is filled with water blocking powder in the loose tube, and the other is filled with water blocking yarn in the loose tube. Among them, the water-blocking yarn filling method usually uses active wrapping water-blocking yarn to realize the filling process, but this kind of filling process has high requirements on the manufacturing accuracy of the yarn-laying...

AI Technical Summary

Problems solved by technology

Among them, the water-blocking yarn filling method usually uses active wrapping water-blocking yarn to realize the filling process, but this kind of filling process has high requirements on the manufacturing accuracy of the yarn-laying equipment, and the required equipment is produced by professional manufacturers. , so the equipment investment costs are high, the requirements for equipment operators are high, and equipment maintenance is difficult, resulting in increased production costs

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