摘要:
In an apparatus for continuous corrugation of walls of tubes or tubular elements, especially cable components, at least one corrugating wheel, rotatable about its own axis, also rotates about the tubular element to be corrugated. In addition to a drive (15) for the rotation of the at least one corrugating wheel (11) about the tubular element (5) to be corrugated, there is provided a speed-controllable drive (16) for the rotation of the at least one corrugating wheel about its own axis.
摘要:
A method for manufacturing a coaxial cable is described, whereby a dielectric layer (2) is extruded over an inner conductor (1), a lengthwise incoming metal strip (3) is formed into a tube, having a lengthwise slot around the insulated conductor (1, 2). The tube (3) is welded along the slot to thereby form a welded seam (4), and the welded tube is drawn down onto the surface of the dielectric layer (2). A metal strip (3a) having a plastic coating (3b) at least on one of its major surfaces is used to form the tube (3), and its lengthwise edges are welded by a laser (19).
摘要:
An apparatus for the continuous marking of elongated stock moving in the direction of extension of the stock and including one or more nozzles for directing a dye-jet towards the elongated stock is improved by causing the nozzles to oscillate in a plane parallel to the direction of movement of the elongated stock to be marked; and the jets as produced by flows in the respective nozzle along the plane of oscillation and are redirected to emerge at right angles to the plane of oscillation; the nozzles either include a first duct extending in the nozzle body in a particular direction and being continued in a second duct extending at 90 degrees; alternatively a nozzle is a tube of L-shaped configuration.
摘要:
A capstan draw apparatus that includes a plurality of split clamps; a plurality of support carriages each having one of the split clamps positioned thereon; an endless chain drive mechanism for concurrently pulling each of the support carriages; and an elongated guide frame mechanism for successively closing and opening the split clamps about an elongated member. The apparatus further includes an endless lateral guide frame mechanism including first and second oppositely disposed, parallel endless lateral guide frames that are spatially positioned parallel to the endless chain drive mechanism and extend on opposite sides of the plurality of support carriages for continuously supporting each of the carriages in a positively guided manner for uniform movement thereof throughout their entire endless paths of rotation.
摘要:
A light-wave conductor cable is described within the core of which there is at least one ribbon line (1) in which light-wave conductors (2) are arranged alongside of and parallel to each other. The light-wave conductors (2) are enclosed between two ribbons (3, 4) the material of which has the same coefficient of thermal expansion as the light-wave conductors (2). The ribbons (3, 4) consist preferably of fiberglass-reinforced plastic. The ribbon line (1) may be disposed within an outer jacket (20), and therein arranged straight or curved or, in the case of several ribbon lines (1), in ordered or random fashion and about a core of the light-wave conductor cable.
摘要:
There is disclosed a method and apparatus for adjusting the thickness of a hollow tubular member to provide a cross-section of constant area, such adjustment being inversely dependent upon detected increases or decreases in the thickness of the metal strip. The method and apparatus provide for the formation and welding of a metal strip into a hollow tubular member; the application of longitudinally directed, braking or pushing forces to the hollow tubular member; and then the continuous reduction of the hollow tubular member to achieve a cross-section of constant area.
摘要:
Spacer for concentrically disposed tube systems where a temperature drop exists between adjacent tubes. This may consist, for example, of a superconducting electric cable or alternatively of a tube system for carrying heated liquid or gaseous media. The concentric tubes are spaced by a winder which touches the surfaces of adjacent tubes at particular points and which consists of ribbons of insulating material disposed adjacent to each other. The individual ribbons are so formed and so arranged that they touch adjacent tube surfaces either at only individual points or at lines.
摘要:
Foam insulated conductor is produced by heating the conductor to a temperature at which the conductor retains sufficient heat to effect crosslinking and foaming of a polymer composition, followed by extruding the polymer composition onto the conductor, with the crosslinking and foaming being effcted by the retained heat.
摘要:
In accordance with the teachings of the instant invention, techniques for the manufacture of flexible metal tubing and metal tubing made thereby are set forth wherein a plurality of thin walled metal tubes are concentrically formed one about the other and subsequently corrugated to form continuous lengths of flexible metal tubing capable of withstanding substantial pressures. This is achieved in accordance with the teachings of the instant invention by forming an inner component tube from the continuous forming in a lengthwise direction of a metal band into a tube having longitudinal edges which are welded together to form a continuous, longitudinal welded joint. Concurrently, at least one further component tube is formed concentrically about the inner tube by a lengthwise deformation of a second metal band into a second tube having opposed longitudinal edges in close proximity to each other. This second tube is also welded in a longitudinal direction and immediately thereafter, is reduced in diameter through drawing techniques to an appropriate dimensional relationship with the inner tube initially being formed. The resulting structure is subsequently corrugated in the same manner as a single wall structure is corrugated and it has been found that the resulting structural configuration is highly flexible, unexpectantly simple to corrugate and is capable of withstanding pressures equal to or greater than a single thick walled tube designed for a similar purpose.
摘要:
The invention specifies a metal spool for receiving metallic winding material (5) in the form of a wire, which spool comprises two flanges (1, 2) in the form of circular disks, arranged parallel to one another and having the same diameter and an elongate core (3) connecting the flanges and having a circular cross section and smaller radial dimensions in comparison with the flanges (1, 2), the mid-axis of which core corresponds to the mid-axes of the flanges (1, 2). A winding space (4) for receiving the winding material (5), is delimited by the core (3) and the two flanges (1, 2). The dimensions of the winding space (4) in the direction of the mid-axis of the spool can be enlarged at an increased temperature. In addition, means are provided to bring the dimensions of the winding space (4) back to the initial position when the temperature returns to room temperature.