Abstract: An apparatus and method is disclosed for drawing continuous metallic wire having a first diameter to a metallic fiber having a reduced second diameter. A feed mechanism moves the wire at a first linear velocity. A laser beam heats a region of the wire to an elevated temperature. A draw mechanism draws the heated wire at a second and greater linear velocity for providing a drawn metallic fiber having the reduced second diameter.

Abstract: A double-draft continuous wire drawing and collection machine having first and second reduction dies for drawing wire in succession. A rotary advancing block driven by a variable-speed first motor draws wire rod through the first reduction die, and a rotary flyer mechanism driven by a second motor draws wire through the second reduction die as it coils wire on a stationary block. A tension control arm and rheostat regulate the speed of the first motor based on wire tension differentials detected between the rotary advancing block and the second reduction die, in order to maintain constant wire tension in that wire segment.

Abstract: The present invention relates to a method of regulating the drive of a multiple drawing machine or drawing device, respectively, as well as to a device for drawing billets. By means of the method it is possible to drive a wet drawing machine such that slip-free operation is also achieved. The device according to the invention comprises a drive regulation suited for slip-free wet operation. By means of the present invention, substantial improvements of the quality of the drawn product, in particular of wires of copper, copper alloys or special materials, respectively, are achieved. The operation substantially is performed automatically, and an automatic adaptation of the device to modified operating conditions, such as modification of the property of the material of the billet, is effected.

Abstract: A process for controlling a multiple stage drawing machine that implements a direct non-sliding drawing process provides for set-up and production to be automatic and for the variables necessary for process control, especially material speed and applied force, to be derived without establishing contact between the stock material and a sensing device.

Abstract: A process for controlling a multiple stage drawing machine that implements a direct non-sliding drawing process provides for set-up and production to be automatic and for the variables necessary for process control, especially material speed and applied force, to be derived without establishing contact between the stock material and a sensing device.

Abstract: A wiredrawing machine (10) consists of a plurality of stages (11) in cascade, each stage comprising a drawbench (13) for passage of the wire (14) partially passed over a power-driven traction pulley (12). The traction pulley is kinematically connected for operation to a first gear (17) having a power-driven planetary gear (19) meshing therewith and rotating about the first gear (17) periphery. Sensor means (23) detects the angular position of the planetary gear (19) about the axis of the first gear (17) and sends position signals to a control circuit (24) which in turn sends commands for speed adjustment to motor (16), in terms of keeping the planetary gear at predetermined angular positions about the first gear.

Abstract: A wiredrawing machine is composed of a plurality of stages in cascade, each stage comprising a die (13) through which passes the wire (14) which is partially wound around a motor-driven tension pulley (12). The tension pulley (12) is kinematically connected to a gear wheel (21) which meshes with a pinion (20) supported by a lever (23) to enable it to rotate around the outer edge of the gear wheel (21) . Keyed onto the pinion (20) is a first pulley (19) around which winds a section of a belt (18) driven by a second expanding pulley (17) driven by a motor (16). The lever (23) is connected to spring members (24) which rotate the pinion (20) around the gear wheel (21) in a direction in which it tightens the belt (18).

Abstract: In a non-slip rectilinear wiredrawing machine with tangentially uncoiling pstans, each capstan is composed of two concentric and coaxial parts, the first of which driven by a motor and comprising the typical capstan pulling face, the second part a freely-revolving ring affording a run-out from which the wire is drawn through a die by and onto a successive capstan; the speed of the individual capstans is synchronized by a device capable of monitoring both the angular movement of the shaft driving the first part of the capstan and the angular movement of the ring, detecting any difference between the two, and correcting the angular velocity of the shaft accordingly.

Abstract: Method of automatically reducing the drawing speed of a tubular material drawing machine when the end of a coil of tubular material, being drawn through the machine, approaches.

Abstract: In a magnet wire fabrication process in which the drawing of wire is "in-line" with the enameling process, it is often a requirement that the drawing machines be supplied with electrical power from the utility grid rather than relying on an "in-house," closely regulated supply of electrical power. In such cases, during voltage dips on the grid, the drawing machine motors will slow down while the wires continue to be pulled from the drawing machine at the same speed as before. A wire accumulator is interposed between the drawing machines and the enameling oven to prevent breakage of wire by providing an accumulation of wire to be used in the event of such a voltage dip. The present invention discloses an apparatus for controlling the various channels of the accumulator so as to provide roughly equivalent amounts of wire in each channel so that the integrity of all channels during a power dip is assured. A central operator control station for effecting the desired control is disclosed.

Abstract: Wire drawing apparatus employs a wire take-up device, a rotatable pay-off device and, located therebetween, a rotating wire drawing die. Mounted on the pay-off device is a coil of material from which wire is drawn by the apparatus. This material may be in the form of rod, for example, and, for the sake of simplicity, will be referred to as such hereinafter. The axis of the pay-off device and rod coil thereon, the axis of the take-up device and the wire coil formed thereon and the axis of rotation of the rotating die all are parallel to each other and preferably, but not necessarily, coaxial. A differential speed compensating drive is connected to and drives the pay-off device in the same direction as the die to compensate for the elongation of the rod as it is drawn into wire. The rod is maintained and transferred in substantially the form of a coil between the pay-off device and the take-up device and passes through the die, which rotates in a plane between the pay-off and take-up devices.

Abstract: The multistage tandem wire drawing apparatus according to the present invention has a heating mechanism and wire drawing units (draw benches) arranged in tandem to correspond to the respective manufacturing stages of the work, and is characterized in that a tension of the work moving between the wire drawing units is measured. The measured tension and a predetermined reference tension are compared to calculate any deviation therebetween, and, by using a movable chuck speed of a predetermined wire drawing unit as a reference, movable chuck speeds of the other wire drawing units are controlled in accordance with the calculated tension deviation. According to the present invention, the wire drawing speeds of the wire drawing units are controlled in accordance with the tension of the work between the wire drawing units so that excessive tension does not act on the work, thereby preventing damage to the work while keeping the work taut.

Abstract: An improved rectilinear draw machine, effective to directly draw ferrous and non-ferrous materials, is described, which is capable of automatic and continuous control and capable of adjusting the working speed without conveying the drawn material onto outer sensors. The machine comprises drawing sections, each section being formed by a drawing ring, an idle ring coaxial therewith and a compensating arm between the rings. These three elements rotate in the same direction. The lower drawing ring is driven by the driving shaft. A hollow central shaft is fixed to the upper idle ring, which is coaxial with the lower drawing ring, but of lesser diameter. The lower end of the hollow shaft is connected to the central body of an electromagnetic brake. The compensating or balancing arm, located between the lower drawing ring and the upper idle ring, is rigid with a shaft the lower end of which is connected to the inner body of the electromagnetic coupling or coupling.

Abstract: The drum of an in-line wire drawing machine is rotated by a mechanical variable speed drive whose speed is automatically adjusted by a speed trim control which senses the difference between the speed of the wire being supplied by the drum and the speed at which wire is being consumed by a using station. The final wrap of wire on the drum is engaged by a roller connected to a one-way clutch, the roller serving to prevent the wire from slipping on the drum and thus serving to increase the traction between the wire and the drum.

Abstract: A multiple stage wire drawing system with a plurality of pivotal dancer pulleys, each operable for maintaining wire stock tension between stages and for feeding wire stock downwardly along a generally helical path from an upper guide pulley receiving wire stock from a preceding draw block to a lower coaxial guide pulley aligned for guiding wire stock to a succeeding die block. Each pivotal dancer pulley is mounted via a support rotor on a relatively short pivot arm and for rotation about an axis inclined to its pivot axis, and a toggle type linkage is connected to the dancer pulley support rotor for controlling the angular relationship of the inclined dancer pulley to the coaxial guide pulleys.

Abstract: In a machine for reducing the cross-section of a number of wires by drawing each of them through a respective series of dies of decreasing diameter, a corresponding series of individual capstans is used for drawing each wire through its series of dies, and each one of several drive shafts supports at spaced positions along its length the capstans of a respective drawing stage of each series. Each capstan is driven by the shaft on which it is mounted, and the drive mechanism for the shafts can be adjusted, by presetting or otherwise, to give different peripheral speed ratios to the capstans, to suit different die sets and/or to compensate for wear. The capstans are mounted between bearings supporting the shafts, and the drive mechanism is located outside the bearing at the relevant end of the shaft. Preferably mechanism coupling adjacent shafts alternates between the two ends of the machine.