摘要:
In a method and apparatus for manufacturing an optical fiber cable, a metal band is gradually shaped into a lengthwise slotted tube, the optical fibers are introduced into the still open slotted tube, the lengthwise slot of the tube is welded and the outside diameter of the welded tube is reduced. The welded tube with the reduced outside diameter is wound at least once around a take-up reel. A force provided on the reduced outside diameter welded tube as it is wound on the take-up reel causes an elastic strain of 0.1 to 0.6% on the tube. The strain is released on the take-up reel to produce an overlength of the optical fibers relative to the reduced outside diameter welded tube.
摘要:
In a method and apparatus for manufacturing an optical fiber cable, a metal band is gradually shaped into a lengthwise slotted tube, the optical fibers are introduced into the still open slotted tube, the lengthwise slot of the tube is welded and the outside diameter of the welded tube is reduced. The welded tube with the reduced outside diameter is wound at least once around a take-up reel. A force provided on the reduced outside diameter welded tube as it is wound on the take-up reel causes an elastic strain of 0.1 to 0.6% on the tube. The strain is released on the take-up reel to produce an overlength of the optical fibers relative to the reduced outside diameter welded tube.
摘要:
In a method for producing a lengthwise welded metal tube with an outside diameter of 1 to 6 mm, whereby a metal band is shaped into a lengthwise slotted tube by a forming tool, and the lengthwise slot of the tube is welded by a laser welding installation, the tube to be welded passes immediately before and immediately after the welding point area through a guide that guides the surface of the tube to keep the edges of the band in contact with each other and keeps the welded seam stress-free. The jaws of a clamping tool grip the welded tube immediately downstream of the guide to keep it from twisting.
摘要:
A cable stranding apparatus is described as having a plurality of stranding rotor units that are interchangeably coupled, in a locked manner, to a single rotor drive assembly of such apparatus. Each stranding rotor unit is designed to accommodate the dimensions of particular cable elements to be stranded. For this purpose, the stranding rotor unit for cable elements of a large cross-section has a plurality of large collets for accommodating the drawing of such large cable elements through the unit; while the cable stranding rotor unit for cable elements of a small cross-section has a plurality of smaller collets for drawing the smaller cable elements through such unit.
摘要:
There is disclosed a method and apparatus for manufacturing a small diameter, thick walled, cable sheath by controllably driving a metal strip in a longitudinal direction while it is trimmed and formed into a hollow tubular member; continuously welding the longitudinal abutting edges of the hollow tubular member in association with cooling the tubular member in the vicinity of the welding by surrounding at least 60% of its circumference with a coolant, while maintaining the resulting longitudinal welded seam free of the coolant; and continuously drawing the cooled hollow tubular member in the same direction as the metal strip is driven.
摘要:
A device for attaching protective insulation to the end of an electric wire, having at least one lead to which a contact element has been attached, includes a carrier (1), equipped with at least three injection dies (3), which can rotate around an axis (A), and of at least one injection molding device (2, 10), located in the circumferential area of the carrier (1). A guide path, extending circumferentially around the carrier (1), is attached to a fixed part of the device. The guide path includes two portions of different radii, extending together nearly 360.degree., which are concentric to the axis (A) of carrier (1), and converge at one end through a transition piece in the guide path. The other ends of the guide path are located at the loading position level (I) of the injection dies (3). The movement of the injection dies (3) is guided by the guide path. The injection dies are closed in the small radius area of the guide path, and are open in the larger radius area. The carrier (1) can rotate in steps of an angle corresponding to the distance of the injection dies (3) from each other.
摘要:
There is disclosed a method and apparatus for fixing a predetermined spacial orientation of exposed end portions of plurality of optical fibers included within a conductor unit; extending such exposed end portions between two terminal blocks for maintaining an axial tension therein; and scratching a surface of each of such end portions held in tension in a common transverse plane for causing each of such end portions to break and form a new end face. After such breaking, the spacial orientation of the remaining exposed end portions of the optical fibers is continued during the individual welding thereto of aligned end faces of a plurality of optical fibers of a second conductor unit.
摘要:
In an apparatus for manufacturing an optical fiber cable that includes a metal tube (3) in which at least one optical fiber (2) is arranged in a viscous plastic mass, which apparatus includes a device continuously forming a metal strip (5) into a slit tube, a welding device (7), and a charging tool with at least one tube (22b) whose one end projects into the slit tube (22b), whereby the tube introduces the optical fibers (2) into the metal tube (3), the one tube (22b) has an indentation (22d) on its surface facing the welding device (7), which is covered toward the top and thus forms a channel (22f), and a coolant gas or protective gas is directed through this channel (22f).
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:
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.