摘要:
A wire feeding mechanism for advancing a continuous length of wire along a pathway includes a housing having two roller supports each rotatable about a corresponding axis transverse to a wire pathway. The roller supports are on opposite sides of the pathway and are driveably engaged with each other. A drive roller is on each of the roller supports for rotation therewith. The drive roller includes an outer surface extending circumferentially about the corresponding axis. The outer surface defines a groove having an included angle of less than ninety degrees (90°). The drive roller on each of the roller supports compressively contacts a continuous length of wire between the roller supports such that the wire is advanced along the pathway in response to rotation of the drive rollers.
摘要:
The invention relates to a device for buffering a welding wire, whereby a wire buffer, in particular a wire buffer magazine is arranged between a wire advance device and a further wire advance device which is preferably arranged in the vicinity of a welding torch, or in the welding torch and the welding wire is run between the two wire advance devices in a wire core. According to the invention, a simple and compact a buffer device as possible and an improvement in the dynamic behaviour of the wire supply can be achieved, whereby the wire core is attached or fixed at one end and the other end thereof is free to move and the wire core with the welding wire is arranged such as to be free to move within a wire guide tube with a substantially larger cross-section than the outer diameter of the wire core and the buffer volume of the wire buffer magazine is defined by the cross-section and the length of the substantially larger wire guide tube.
摘要:
The present invention concerns a procedure and a system for feeding optical fibre cables into a pipeline with the help of an installation device at adjustable speed. In order to prevent damage during the advancement of the optical fibre cable the engine (15) of the installation device has been supplied with a friction safety clutch (17) exerting pressure on a moving coil (18, 23).
摘要:
A drive roller is provided for use on a wire feeding mechanism. The drive roller includes a hub having an axis and an outer surface extending circumferentially about the axis. A plating is on the outer surface of the hub and extends circumferentially thereabout.
摘要:
The present invention relates to a method and apparatus for reducing catenary during winding of a fiber bundle which includes a plurality of fiber strands into a wound package. The method includes: applying substantially equal tension to each of a plurality of fiber strands; gathering the strands to form a bundle; advancing the bundle at a predetermined speed and tension toward a winding device; measuring the tension of the bundle; adjusting the tension of the bundle by adjusting the speed at which the bundle is advanced, such that (1) the speed of advancement of the bundle is increased when the measured tension of the bundle exceeds a predetermined value and (2) the speed of advancement of the bundle is decreased when the measured tension of the bundle is less than a second predetermined value; and winding the bundle to form a wound package. The apparatus includes a frame; a plurality of fiber strand supply packages; a plurality of tensioning devices for applying substantially equal tension to each of the fiber strands; a gathering device for gathering the fiber strands into a fiber bundle; a feed device for advancing the fiber bundle at a predetermined speed to a winding device; a tension sensing device for determining the tension in the bundle and providing a signal to a feed device controller which adjusts the speed of the feed device in response to the signal from the tension sensing device; and a winding device.
摘要:
A turndown apparatus has first and second guide rollers arranged respectively along the inside and outside of a curved path along which bendable products such as bars, rods and the like move at high speeds. The guide rollers coact in pairs to define gaps spaced along the curved path, and a mechanism is provided for symmetrically adjusting the gaps defined between the guide rollers in order to accommodate different product sizes.
摘要:
Device to compensate the elongation of two or more wire rods or round bars on machines fed with two metallic wire rods or round bars of iron or alloys thereof of a type for building work, the machines being, for instance, bending/shaping machines, the device comprising a pair of opposed rolls (12), namely an upper roll (12a) and a lower roll (12b) respectively, the rolls (12) defining between them respective inner (17a) and outer (17b) passes (17), with which the wire rods passing through cooperate, at least one (12a) of those rolls (12) being able to move substantially parallel to itself on a plane containing the axes of the rolls (12), the rolls (12a-12b) having respective shafts (15a-15b) each of which is fitted to a relative support (13), namely to respective upper (13a) and lower (13b) supports, the other roll (12b) being able to move in a controlled rocking manner on the plane containing the axes of the rolls (12) and being adjusted by a bottom positioning screw and a return spring (22).
摘要:
A godet for guiding and heating an advancing yarn, which includes a shaft mounted for rotation about its axis, and a casing coaxially and releasably mounted to the shaft. An induction coil heating system is fixedly mounted between the shaft and the outer wall of the casing, and the heating system includes a tubular core having a plurality of induction coils mounted thereon. A plurality of annular ribs are positioned on the core and on the inside of the outer wall of the casing for providing an advantageous magnetic flux path between a core and casing.
摘要:
A wire transport apparatus has a pair of rollers having opposed peripheral running surfaces which at their nip contact the wire to drive it, one of said rollers being driven. The driven roller is mounted on an arm swingable about a pivot axis. The arm also carrying a coupling pulley connected to the driven roller to drive it in rotation. The coupling pulley is itself driven in rotation by an endless flexible element whose tension tends to cause said driven roller to apply load to said wire. In order that variation of the tension in belt also adjusts the normal force applied to the wire by the driven roller, the pivot axis is parallel to the direction of wire travel, and the driven roller and the coupling pulley are on a common rotational axis perpendicular to the pivot axis, at different distances from the pivot axis. Excessive force on the wire is avoided, and wear is minimized.
摘要:
A yarn dispenser having upper and lower rollers feeding yarn from a skein. The upper roller is pivoted to the side for insertion and removal of yarn. The upper roller has a part of its central circumference recessed so as to free yarn one time in each rotation of the upper roller, to thereby prevent balling of the yarn. A miniature, 1.5 V battery powered motor powers the rollers via an O-ring belt drive. A foot controlled switch is used in the electrical circuit. The yarn dispenser can be mounted in a briefcase sized receptacle by snap fasteners or may be removed, in which case the dispenser can be supported above a supporting surface on a removable cover on which the base rests.