Vacuum negative pressure molding device and method of optical fiber and cable outer sheath

Abstract

The invention discloses a vacuum negative pressure molding device and a vacuum negative pressure molding method of an optical fiber and cable outer sheath. The device comprises a mold, wherein the mold is connected with an air inlet of a filter through a negative pressure pipe; the filter is hollow and is nested with a filter cavity; a stainless steel filter net is arranged at the top end of the filter cavity, an air outlet of the filter is arranged in the bottom end and the filter cavity is connected with an air pipe through a flange; the air pipe is connected with a vortex air pump. According to the device and the method disclosed by the invention, the cleanliness of air entering the vortex air pump is ensured, a potential safety hazard caused by the fact that dust is sucked into the vortex air pump is avoided, the service life of the vortex air pump is prolonged and the stability of vacuum negative pressure in the mold is ensured, so that the quality of a product is improved and a consumable material does not need to be used. The vacuum negative pressure molding device only needs to be shut down and cleaned once every half a month, so that the implementation cost is low and the vacuum negative pressure molding device is safe and reliable.

Description

technical field [0001] The invention relates to the field of optical cable manufacturing equipment, in particular to a vacuum negative pressure forming device and method for an optical fiber cable outer sheath. Background technique [0002] The sheath process is a key process that determines the quality of the final product of the optical cable. Due to the substantial improvement in equipment manufacturing technology and control technology in recent years, the production speed of the sheath has been improved, but in the process of quality control, it is found that the appearance size of the optical cable is not effective. control. [0003] During the extrusion process of the sheath of the optical cable, after the plastic passes through the mold, it needs to be tightly attached to the steel strip or aluminum strip of the cable core to form the outer sheath of the optical cable. According to the national standard, the direct tolerance of the outer sheath of the optical cable i...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a vacuum negative pressure forming device and method for the outer sheath of an optical fiber cable. By installing a mechanical filter device with an internal filter cavity, the problem of embossing powder mixed into the vortex air pump and blocking the filter screen can be solved. problems, with the advantages of high-efficiency filtration, long-lasting use, and no need to use consumables

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