1. Camera Coaxial Cable for Production Machinery in Factory Automation
Japan's labor shortages and soaring labor costs are creating a growing market for human cooperating robots and compact articulated robots, generating an urgent need for the development of cables that can provide enough bending and twisting resistance to be mounted in the moving parts of these robots.
Hitachi Metals, Ltd. has achieved the high bending and twisting resistance needed by using a structure that lets conductors move easily in a flexible way. The structure contains an extrusion-molded three-layer insulator. The insulator's first and third layers have a solid structure, and its second layer has a foamed structure. To prevent line breaks caused by strands rubbing against each other, the shield is made of a mixed woven braid composed of copper foil thread and alloy wire. It attains high bending and twisting resistance, withstanding bending over 100,000 times in a 19 mm radius (three times the outer diameter) and twisting over 600,000 times over a 500 mm length. Its attenuation characteristic is 13.9 dB/30 m at 625 MHz. The developed structure can be applied to many different sizes and configurations, and can satisfy comprehensive characteristics along with its electrical noise resistance.
(Hitachi Metals, Ltd.)