A forming device and forming method for eccentric spiral optical cable pigtail

Abstract

The invention discloses a molding device and molding method for an eccentric spiral optical cable pigtail, relates to the field of optical cable pigtail molding, and includes a second mold for bending the middle part of the spiral section of the optical cable pigtail, and the second mold includes a rotating A mold core and a rotating nut sleeved on the rotating mold core. One end of the rotating mold core is provided with a first semi-circular arc section, and a side of the first semi-circular arc section away from the rotating mold core is provided with a The first fixing structure for fixing the optical cable pigtail, the middle part of the rotating mold core is provided with a threaded section, the rotating nut is threadedly connected with the threaded section, and one end of the rotating nut close to the first fixing structure passes through a The rotating shaft fixes a second pressure wheel, and a second section for the optical cable pigtail to pass is formed between the second pressure wheel and the rotating mold core. The present invention completes the bending operation of the helical section of the optical cable pigtail through the second mold, and During the demoulding operation, it has the characteristics of simple demoulding and no damage to the pigtail of the optical cable.

Description

technical field [0001] The invention relates to the field of forming optical cable pigtails, in particular to a forming device and forming method for eccentric spiral optical cable pigtails. Background technique [0002] The shape of the submarine optical cable repeater is a long cylinder, and there is a splice box connected to the submarine optical cable at each end. Its length exceeds that of a professional construction ship. It is inconvenient to board the ship and lay construction. Therefore, in order to overcome the above problems, a cardan shaft connector and a fiber optic cable pigtail are designed. The design of the cardan shaft coupling can ensure that the pigtail of the optical cable will not be damaged during transportation and laying construction. [0003] The optical cable pigtail is the key component to realize the sealing of the connection between the submarine optical cable repeater and the submarine cable. After the integrated production of the submarine op...

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Problems solved by technology

[0003] The optical cable pigtail is the key component to realize the sealing of the connection between the submarine optical cable repeater and the submarine cable. After the integrated production of the submarine optical cable repeater is completed, it needs to be transported long-distance, transferred to the ship and installed; during the laying construction process of the submarine optical cable repeater Among them, due to the design of the cardan shaft coupler and the optical fiber pigtail of the submarine optical cable repeater, the submarine optical cable repeater can play a certain buffer role in dealing with complex submarine landforms, transportation curves and avoiding damage to the photoelectric unit. At the same time, Due to the application environment of the submarine optical cable repeater, the optical cable tail fiber is in contact with seawater. The performance of the material used must meet the requirements of watertightness, airtightness, seawater corrosion, mechanical bending reduction performance and compression resistance under deep sea environmental conditions. Not only have certain requirements for the bending shape and the minimum bending angle, but also require zero damage to the surface of the cable pigtail. As a result, after the optical cable pigtail is formed, it is not easy to demould from the mold, and in the prior art, after the demoulding operation is completed, it is easy to cause damage to the surface of the demoulded optical cable pigtail, or cause the curved shape and the minimum bending Angle changes, resulting in substandard pigtails produced

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