Cable shielding layer splicing method

Abstract

The invention discloses a cable shielding layer splicing method which belongs to the technical field of electric installation and connection and specifically relates to a shielding layer splicing process aiming at cables. Through the shielding layer splicing method, improvement is carried out on the original shielding sleeve processing method, namely, before fusion welding is carried out on soldering tin rings of shielding mesh sleeves of two spliced cables, tinning is carried out on welding parts of shielding layers and the shielding mesh sleeves of the spliced cables so as to infiltrate the soldering tin into the shielding layers of the cables to ensure that the contact between the soldering tin and the shielding layers of the cables is reliable; and the soldering tin rings at two ends of the shielding mesh sleeves are heated through a hot air gun and then the soldering tin rings and the soldering tin at the tinning parts of the shielding layers of the spliced cables are integrally connected due to melting by heating, so that the shielding layers and shielding mesh sleeves of the two spliced cables can contact reliably and the splicing quality of the shielding layers of the cables is ensured.

Description

technical field [0001] The patent of the present invention belongs to the technical field of electrical assembly, and specifically relates to a processing method for continuous connection of cable shielding layers. Background technique [0002] At present, the bus cable on the aircraft adopts the 4M data bus (American standard 1553B) conforming to the GJB289A standard to complete the communication between the various devices in the aircraft. Compared with ordinary cables, data bus cables have high data transmission rate, strong anti-interference ability, good fault tolerance and fault isolation performance. In order to ensure the performance reliability of the cable, the data bus cable has extremely high requirements on the shielding performance, and the resistance value of the shielding layer is required to be less than 0.039Ω / m. [0003] The current bus cable is composed of multiple couplers connected in series. The shielding layer of the bus cable between the couplers ne...

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Problems solved by technology

However, the production of bus cables is a new technology, and the couplers and shielding sheaths used are all produced by Raychem Company of the United States, and their quality cannot be monitored. There will always be many quality problems in the real product, such as: solder rings in the shielding mesh sleeve There are problems such as unfinished materials and oxidation of the shielding layer of the coupler cable. Therefore, in the actual cable production process, if the above-mentioned process method provided by the manufacturer is used for processing, if you encounter unqualified shielding sleeves and cables, you must think about it during the processing process. The solder after melting the solder ring penetrates into the shielding layer of the bus cable, and the heating time takes a long time. At this time, the heat-shrinkable insulating sleeve with glue outside the solder ring will burst; if the heating time is short, the solder of the shielding net sleeve cannot Infiltrated into the shielding braiding layer of the connecting cable, only adhesion, resulting in reliable contact between the shielding net sleeve and the shielding layer of the bus cable. Meet the design requirements of <0.039Ω / m index, so the performance test of the produced bus cable is unqualified, cannot meet the requirements of the model product, and affect the production assembly progress and test of the model

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