Impacts of Mold Structure on Drag Rubber Cable Sheath

With the development of the industrialization, the rubber flexible cable with its stable electric performance, excellent mechanical and physical properties, especially the flexible characteristic, has been the main equipment installation cable in various mobile situations. At present in large open-pit coal mine and metallic ore mining process, there often appears the rubble and sharp objects hit the cable, cable often suffers a lot of drag force in the process of moved along with large mining equipment, so Drag Rubber Cable depends on the special structure design to reduce the effects of external torque to the sheath material, thereby improving the service life of the cable and become the first choice of drag equipment installation.

UTP CAT6

In drag friction occasion, the reduce of cable life often starts from the outer to the inner sheath of wear damage to insulation wire core, so the lifetime of the sheath directly affects the service lifetime of the cable. Drag Rubber Cable adopt make the traditional sheath thickness one divides into two, increase braid structure between the two layers of sheaths to increase the adhesion strength of the inner and outer sheath, braid equipped with a certain elastic force material, to buffer cable sheath reaction in the process of stress, so as to improve the lifetime of the cable.

UL2464 5-24AWG

Once before implementation of sheath can be divided into two times, naturally sheath thickness of each layer is thin, greatly improving process realization difficulty, therefore, the choice of mold for Rubber material during extrusion is especially important. Under normal circumstances, common rubber cable production is implemented through the mold core and mold ratio to provide a larger pressure to fill the cable core, general mold core will choose large Angle, reduce the die sleeve angle, the angle difference of mold core and die set is controled in around 15 ℃, through the Angle difference control extrusion pressure of rubber material, the material compaction under the condition of extrusion in the core surface. The thickness of inner nd outer sheath of drag cabe is thin, production of rubber material is extrusion type, in outer sheath production, rubber material in the core function of extrusion die, when pressure is too large, it is easy to cause mold stucked due to the Accumulation of extrusion of inner sheath.