摘要:
Method of making insulated conductor wire in which a homogeneous mixture of a dielectric carrier and magnetically permeable particles is sprayed onto the wire to deposit a layer of the mixture on the wire. The layer is then hardened to provide an insulating layer with the particles substantially uniformly dispersed therein.
摘要:
Jacket extrusion apparatus in which a core tube located within an extruder head is provided with axial projections which are spaced around the tube. The projections break down accumulated drool from the extrudate and cause it to move away as small particles.
摘要:
In a method and apparatus for coloring polymer-insulated wire, the wire is guided through a solvent reservoir to dissolve surface contaminants and etch the surface of the insulation, and passed between opposed wiping surfaces to wipe surface contaminants from the wire. The wire is then passed through a hot air duct to evaporate solvent remaining on its surface. The dried wire is guided through a solvent-based colorant reservoir to coat it with colorant and passed against a wiping surface to wipe excess colorant from its surface. The coated wire is passed through a hot air duct to evaporate some of the solvent in the colorant, and through a cold air duct to harden an outer surface of the colorant before it passes over a guide wheel. The hardened surface prevents adherence of the colorant to the guide wheel. The coated wire is passed by a spraying device which intermittently sprays solvent-based colorant on the wire to band encode it. The band-encoded wire is passed through a hot air duct to evaporate some of the solvent in the bands of colorant, and through a cold air duct to form a hardened outer surface skin on the bands of colorant before they pass over a guide wheel. The hardened surface skin prevents adherence of the bands of colorant to the guide wheel. The method and apparatus are useful for reclaiming polymer-insulated wire with off-standard or undesired coloration.
摘要:
In a method and apparatus for drying filamentary material, a duct is provided for enclosing a portion of a passline. The duct comprises two parts relatively disposed laterally of the passline. These parts are relatively movable away from one another laterally of the passline to provide a duct open position and towards one another to provide a duct closed postion. First and second guide wheels are provided for guiding the filamentary material along the passline through the duct. The guide wheels are relatively movable along the passline between the duct parts in the duct open position between a first pair of relatively close positions and a second pair of positions at opposite ends of the duct. With the duct in the duct open position and the guide wheels in the first pair of positions, filamentary material is fed over the guide wheels. The guide wheels are moved relatively along the passline from the first pair of positions to the second pair of positions to draw the filamentary material along the passline between the duct parts. The duct parts are moved into the duct closed position to enclose the filamentary material extending between the guide wheels. A drying gas is passed into the duct while advancing the filamentary material along the passline and guiding it through the duct. The method and apparatus are useful for drying solvent-based colorants on polymer-insulated wire.
摘要:
Apparatus for changing relative positions of conductor pairs in a cable core in which each pair is moved through its individual guide movable around a substantially circular path. The guides lie in series and move independently of one another. An array forming device at the downstream end of the movable guides has a smooth convex surface for engaging the conductors and holds them in an array while enabling the pairs to change their relative positions in the array as dictated by movement of the guides. A closing die for the conductor pairs is located downstream from the array forming device.
摘要:
A method and apparatus for removing binder from around a telecommunications cable core. The apparatus comprises a binder take-up reel, drive for rotating the take-up reel around a passline for cable core, and binder unwinding and guide mechanisms which are freely rotatable about a take-up reel station. The apparatus is economical in construction and requires only one drive motor, for the take-up reel, because rotation of the binder unwinding and guide mechanism is driven by binder tension as binder is unwound from the core. The binder unwinding and guide mechanism provides simple mechanical mechanism to control the speed of rotation of the binder unwinding and guide mechanism and the speed of rotation of the take-up reel relative to the cable core speed along the passline so that the binder is in tension as it is unwound controllably from the core.
摘要:
Apparatus for forming an insulation layer around an electrical conductor and having a die insert or core tube for guiding the conductor through a die orifice. The insert is movable to control its position and its position is controlled by two rotatable mountings. A first of the mountings eccentrically holds and is rotatable around the insert while the second mounting lies radially outside of and eccentrically holds the first mounting. A monitoring means analyzes degree of eccentricity of the conductor and operates a driving means for the mountings to move the insert in the appropriate direction for concentricity.
摘要:
Apparatus for forming an insulation layer around an electrical conductor comprising an extruder head and a die insert within the head, the insert having a feedpath for the conductor towards the die orifice. An insert holder is provided and the insert is pivotally movable within the insert by the use of a flexible mounting means which allows for movement of the insert about any plane. The mounting means may be a flange with an annular weakened section to provide the flexibility. Alternatively, the mounting means comprises spring steel annular tubes disposed between the insert and holder.
摘要:
Changing relative positions of conductor pairs along a telecommunications cable core by passing the unstranded pairs, as they approach the core unit forming means, through individual guides which are reciprocally moved across a feedpath for the pairs, the guides being disposed in series along the feedpath with each guide aligned for unobstructed passage of its conductor unit along the feedpath. In this construction, means to reciprocate each guide overlaps those of other guides, thereby reducing the total height of the apparatus.
摘要:
Apparatus for stranding two or more wires together comprising a wire guide means extending in a wire pass direction to a twisting station, the guide means held against rotation about an axis at its upstream end and being rotationally flexible to be torsionally twisted by a rotatable twisting means in the twisting station connected to the downstream end of the guide means. A wire separation tube extends from the twisting means along a fixed curved path section to a stranding station to prevent wires stranding together until they reach the stranding station. The separation tube is rotatable about an axis coinciding with the fixed curved path section and has flexibility to enable the tube to be maintained in its curved configuration along the path with torsional rigidity to avoid build-up and retention of twist.