Abstract: Improvements and modifications to coil steel straighteners provide an integrated structural head that allows for quicker setup of the equipment, integrated lower backup rolls to the structural head, self-aligning rollers, setup timing blocks for equipment calibration, and adjustment screw jacks that allow for narrower center distances and include pointers and scales internally. The backup rollers for each work roller are supported on separate backup roller plates enabling the backup rollers for each work roller to removably installed and independently adjusted. The backup rollers may be supported between opposing blocks and adjusted by moving the blocks toward and away from the backup roller plate using leveling jacks. The work rollers associated with the upper bank may be supported between opposing slide blocks that move up and down in slots formed in opposing side plates, with visual indicators to establish a zero position associated with each work roller in the upper bank.

Abstract: A plate stretcher includes two clamping heads that are directed at one another and can be displaced relative to one another, to apply a clamping force directed along a stretching direction, by way of a pressure element that absorbs the clamping force, and at least one transverse straightener that acts perpendicularly to the clamping force. A method for stretching a plate in a plate stretcher transversely straightens the plate during stretching of the plate.

Abstract: An automatic paper feeding mechanism adapted to a paper roll is disclosed. The automatic paper feeding mechanism includes a first pivotal member, a paper pressing module, a driving member and a paper guiding module. The paper pressing module is pivoted to the first pivotal member for pressing the paper roll. The driving member is for driving the paper pressing module, such that the paper pressing module respectively presses the paper roll in a first position and a second position. The paper guiding module is connected to the paper pressing module. The paper guiding module is driven by the paper pressing module to move from a first guiding position to a second guiding position when the paper pressing module is moved from the first position to the second position, so as to adjust a gap between the paper guiding module and the paper roll.

Abstract: A portable rotary tubing straightener apparatus comprises a mobile console with spool mounting assembly. A motor is supported on the console and drives a shaft which mounts a drive roller. An adjustable tensioner assembly has a tension roller positionable opposite the drive roller. The drive and tension rollers are engageable at opposed locations of a continuous tubing. A rotary straightener assembly is disposed on the console. A motor carried by the console is activatable to rotate the rotary straightener assembly. A spool with metal tubing is mounted to the spool mounting assembly and passes tubing through the rotary assembly and between the rollers. Upon activating the motors, the tubing unwinds from the spool and exits in a continuous straightened condition from the drive and tension rollers. A rotary handle is employed for adjusting the tension in the tension roller.

Abstract: A transport system has a dedicated trailer for transporting a small transport reel (i.e., <18-ft in diameter) of continuous rod to the field. The trailer has a pedestal that can pivot the reel. A hub motor on the pedestal can turn the reel, and a transfer unit and rod bender on the trailer can curve or straighten the rod when being fed into or out of the reel. A power and hydraulic system operates the various hydraulic components on the trailer. In other aspects, the transport system includes stands that can hold the small transport reels on a trailer within a defined transport envelope. When empty, these stands can be stacked on top of one another on the trailer for return to a facility.

Abstract: A wire support and a method of making is disclosed for supporting an object from a base surface. The wire support comprises a plurality of wires with each of the wires having a lower section, an intermediate section and an upper section. The plurality of wires are twisted along the intermediate sections for providing an upright support. The lower sections of the plurality of wires extend outwardly from the upright support for insertion into the base surface to mount the wire support. The upper section of the plurality of wires extends outwardly from the upright support for engaging with the object to support the object relative to the base surface.

Abstract: A helical cord having an elliptical shape and the like is manufactured so that a length-to-width ratio or a dimension of a shaped form of the cord to be shaped in a longitudinal direction can be changed. A cord (C) is sequentially passed through through holes (21H, 22H) of stationary and movable shaping bodies (21, 22) opposing each other of a shaping device (20). At that time, the movable shaping body (22) is moved along the stationary shaping body (21) by a moving device so that the through holes (21H, 22H) become eccentric with respect to each other, and the cord (C) passing between the eccentric through holes (21H, 22H) is bent and deformed so as to be shaped.

Abstract: A method for producing a twisted wire (1) by twisting two wires (2) together. When that portion of the twisted wire (1) extending from one ends (3) of the two wires (2) to a first predetermined position (4) is defined as a one end-side twisted portion (5), and that portion of the twisted wire (1) extending from the first predetermined position (4) to a second predetermined position (6) is defined as an intermediate twisted portion (7), and that portion of the twisted wire (1) extending from the second predetermined position (6) to the other ends (8) of the two wires (2) is defined as an other end-side twisted portion (9), a twisting pitch of the one end-side twisted portion (5) and the other end-side twisted portion (9) is smaller than a twisting pitch of the intermediate twisted portion (7).

Abstract: The device of the invention comprises a structural rack (10) provided with wheels (12) and carrying: a horizontal shaft (20), which supports a reel (30) in which is wound a tube (T); an assembly of straightening rollers (60), at least one of them being a traction roller of the tube (T) driven by a motor unit (50); and a support arm (40), having an end (41) mounted around the horizontal shaft (20) and an opposite end (42) carrying the motor unit (50) and the assembly of rollers (60), between which the tube (T) is pulled and straightened according to a direction tangential to the reel (30), the support arm (40) being locked in the structural rack (10) in different positions angularly offset from each other.

Abstract: A twisted wire 1 is produced by twisting two wires 2 together. When that portion of the twisted wire 1 extending from one ends 3 of the two wires 2 to a first predetermined position 4 is defined as a one end-side twisted portion 5, and that portion of the twisted wire 1 extending from the first predetermined position 4 to a second predetermined position 6 is defined as an intermediate twisted portion 7, and that portion of the twisted wire 1 extending from the second predetermined position 6 to the other ends 8 of the two wires 2 is defined as an other end-side twisted portion 9, a twisting pitch of the one end-side twisted portion 5 and the other end-side twisted portion 9 is smaller than a twisting pitch of the intermediate twisted portion 7.

Abstract: The invention relates to an apparatus and a method for cropping the ends of or for separating test pieces from rolled strip wound into bundles. An apparatus is disclosed which, by means of an outwardly pivotable bottom roller (2) and guide devices (5, 6, 7, 8, 13, 14) for guiding the strip end to the shears, also makes it possible to process strips which are thicker or of greater firmness and are wound into bundles (10). Furthermore, a method is specified, which allows a reliable sampling and, if appropriate, inspection of the sample from strips wound into bundles, a closed bundle being obtained again after sampling.

Abstract: The systems and methods include a feed mechanism supplying multi-strand wire to a coil-spring winder. The coil spring typically has a plurality of turns and is resilient. The multi-strand wire is typically steel, but may be of other suitable material, or a combination of materials. The coil-spring winder receives wire from a spool of wire and forms that wire into a coil spring. Typically, but not always, the coil-spring winder cuts the coil spring to a desired length, and thereby forms a plurality of coil springs of the type that can be employed in mattresses, furniture, car seats, for industrial machines, or for any other application. To feed the coil-spring winder, the systems include a wire holder that supplies the wire to the coil-spring winder along a feed direction. The wire holder is supported for rotation about an axis that may be aligned with the feed direction. The rotation of the wire holder may be substantially synchronous with the formation of the turns of the coil spring.

Abstract: An apparatus for straightening a coiled tubing has an injector that receives the coiled tubing, a straighter that straightens the coiled tubing from the injector, and a shear that cuts the straightened coiled tubing. The straightener has a frame having a first section rotatably connected to a second section, an actuator connected to the second section, and a straightening wheel connected to the actuator. The injector has a first drive chain and a second drive chain. The first and second drive chains each have semi-circular members forming circular channels that grab an outer surface of the coiled tubing. The shear has a trolley, a clamp, a tubing cutter, a return mechanism, and an automated controller. The automated controller actuates the clamp and the tubing cutter while the trolley translates along rails from a first position to a second position.

Abstract: A transport system has a dedicated trailer for transporting a small transport reel (i.e., <18-ft in diameter) of continuous rod to the field. The trailer has a pedestal that can pivot the reel. A hub motor on the pedestal can turn the reel, and a transfer unit and rod bender on the trailer can curve or straighten the rod when being fed into or out of the reel. A power and hydraulic system operates the various hydraulic components on the trailer. In other aspects, the transport system includes stands that can hold the small transport reels on a trailer within a defined transport envelope. When empty, these stands can be stacked on top of one another on the trailer for return to a facility.

Abstract: An elongated strap member that is coiled in a box and is bent lengthwise as it is drawn out of the box, providing an economical, light, compact means of connecting multiple structural members without sagging or other disadvantageous deformations between the structural members. The structural members are bridged by strap member. The end of the strap member is bent over.

Abstract: An apparatus is disclosed for roll forming metal components including substantially channel-shaped members for use in a building structure. The apparatus includes a support frame assembly having front and rear portions. A mechanism is provided for selectively feeding at least one metal strip into the support frame assembly, the metal strip having a pair of side edges and a center web. A plurality of driver roll elements are mounted along the support frame assembly and are adapted to move the metal strip through the frame assembly. Finally, a plurality of spaced idler forming rolls are mounted for free rotation in pairs along the support frame assembly. The idler forming rolls are adapted to simultaneously air form the side edges of the metal strip into angularly extending side flanges by urging the side edges in opposing directions from the center web as the metal strip is moved along the frame assembly by the driver roll elements.

Abstract: A method of leveling metal strip having a thickness ?1 mm has the steps of passing the strip in a travel direction through an upstream braking-roller set and a downstream tension-roller set and through a group of leveling rollers between the braking-roller set and the tension-roller set. A predetermined tension equal to at least 70% of a yield limit of the strip is applied to the strip between the braking-roller set and the tension-roller set for stretch-bend or tension straightening by differentially driving the upstream and downstream roller sets. The strip is bent between the leveling rollers to correct longitudinal curve. Leveling rollers are used of diameters that increase downstream in the travel direction and that are so great that the strip follows the curvature of the leveling rollers at the predetermined tension.

Abstract: A coil processor is provided for performing processing operations on coiled sheet-like material, such as sheet metal, plastics or other materials. The coil processor uncoils and straightens the material before performing desired operations on the material and transferring it for packaging, shipping or further processing. Various features improve the overall efficiency of the coil processor, including its ability to move material forward and backward through the unit without slowing down the overall operation, as well as the versatility of its mobile tool carriers, which can perform multiple complex processing applications, including cutting, punching, stamping, bending or others. Additionally, processing efficiency may be further enhanced by the use of a computer, which determines the most efficient sequence for performing processing operations, and controls the coil processor's various features to process material in that sequence.

Abstract: The invention relates to an apparatus for strip processing with at least one uncoiling station, at least one strip processing station (1) and at least one coiling station. Especially to reduce undesirable strip-edge stresses, a known apparatus for strip processing is configured such that a strip-edge stretching station (2) which stretches the edges of the strip, is provided between the uncoiling station and the coiling station.

Abstract: A pipe lay vessel with a reel for carrying a length of pipe and first drive part for controlling rotation of the reel. A substantially vertical guide structure includes at its upper end a deflection member for deflecting the pipe from a first trajectory extending between the reel and the guide structure to a second, substantially vertical trajectory. A clamping member carries the vertical pipe section and has second drive for feeding the pipe along the vertical trajectory. A movable tension compensator (7) is provided at the first pipe trajectory for lengthening or shortening the first pipe trajectory to maintain a substantially constant tension of the pipe along the first trajectory during unwinding of the reel.

Abstract: A substrate treatment process includes plural steps of delivering a long substrate with application of tensile force to the substrate, wherein the strength of the tensile force is changed at least between a first delivery step and a second delivery step. This process prevents enlargement of edge waviness of a belt-shaped substrate to stabilize the plasma discharge.

Abstract: A descaler is provided for descaling the scale on hot finished wire or green rod. The descaler comprises two rollers that are mounted to a rotatable support plate. The support plate and the rollers rotate in unison. One of the rollers pivots relative to the support plate such that the rollers can be positioned substantially parallel to allow wire to be easily fed between the rollers for set up purposes and can be positioned substantially perpendicular in which the rollers are arranged to effect wire descaling when wire is pulled through the descaler. Rotation of the roller support plate from the initial set up position automatically pivots the one roller into the working position. The pivoting movement of the one roller is accomplished using the tension of the wire that is created as the roller support plate is rotated and/or a cam mechanism.

Abstract: An apparatus and method for handling web material paid off from a coil to a downstream end-use machine. The method generally includes automatically adjusting the height of the coil of web material to maintain a consistent payoff line, and includes dekinking the trailing end of the web material to prevent damage to downstream machines. The apparatus generally includes a reel-type uncoiler having a vertically adjustable mandrel and having a payoff roll biased into engagement with the outside diameter of the coil to define a payoff line of the web material. A dekinker is positioned just downstream of the uncoiler to dekink the trailing end of the web material and to thread the leading end of the web material into a downstream feeder. The dekinker includes a threader roll and a breaker roll pivotably mounted about a common pivot axis, wherein a kinked portion of web material is straightened therebetween.

Abstract: An apparatus and method for handling web material paid off from a coil to a downstream end-use machine. The method generally includes automatically adjusting the height of the coil of web material to maintain a consistent payoff line, and includes dekinking the trailing end of the web material to prevent damage to downstream machines. The apparatus generally includes a reel-type uncoiler having a vertically adjustable mandrel and having a payoff roll biased into engagement with the outside diameter of the coil to define a payoff line of the web material. A dekinker is positioned just downstream of the uncoiler to dekink the trailing end of the web material and to thread the leading end of the web material into a downstream feeder. The dekinker includes a threader roll and a breaker roll pivotably mounted about a common pivot axis, wherein a kinked portion of web material is straightened therebetween.

Abstract: A coiling machine for hot rolled stock with a thickness of between 0.5 and more than 5 mm, arranged downstream of a rolling train and a shears assembly (11). The coiling machine comprises a turntable assembly (12) rotating around an axis of rotation (13) orthogonal to the axis of feed of the rolled stock and lying on a plane substantially parallel to the plane of feed (14) of the rolled stock wherein the turntable assembly (12) supports two coiling mandrels (15a, 15b) arranged diametrically opposite each other and with an axis parallel to the axis of rotation (13).

Abstract: The aim of the invention is to reduce the amount of space and the technical effort required to feed the front end of a wire coil into a wire drawing installation. To achieve this, the arm of the device is formed from a base section and an end section, whereby the end of the base section can pivot around a first pivotal axis and is connected to the base of a rotationally mounted holder and the pivotal axis of the base section runs perpendicular to the axis of rotation of said holder. One end of the end section can pivot around a second pivotal axis and is connected to the other end of the base section. The first and second pivotal axes run parallel to each other. The free end of the end section of the arm supports a head unit that is rotationally mounted around two axes that are located in a normal position to each other. A hook-shaped gripping element and a clamping device which dresses the front end of the wire coil are arranged on said head unit.

Abstract: A straightener device for substantially removing the “coil set” from a sheet of coiled material including a base frame assembly and a head assembly rotatably mounted thereto, the head assembly including a pair of feed rollers and an idler roller, the pair of feed rollers being positioned relative to each other for receiving the sheet material therebetween, the idler roller being positioned adjacent the feed rollers so as to engage the sheet material as the sheet material passes between the feed rollers, and the head assembly being rotatable about an axis of rotation such that the direction of travel of the sheet material as it exits the head assembly can be varied relative to a horizontal plane. At least one of the feed rollers is selectively adjustable relative to the other feed roller so as to vary the space therebetween depending upon the thickness of the sheet material, and the idler roller is selectively positionable relative to the feed rollers.

Abstract: The present invention relate to a device and to a method for handling a pipe (1) comprising at least one metal tube plastically wound on a drum (2). The invention comprises an adjustable straightening system (5) controlled by at least one series of means (6, 7) for measuring the stresses present in the material of the tube once unwound from the drum. The present invention can be used for floating supports intended for offshore laying of uncoiled rigid tubes or for units referred to as “coiled tubing” used in oil wells for drilling or well servicing.

Abstract: A welding wire feeding system feeds welding wire from a barrel to a welding gun. The system includes a feed mechanism for drawing welding wire from the barrel and advancing the welding wire toward the welding gun. A free-wheeling wheel is disposed between the barrel and the feed mechanism and is freely rotatable about an axis. The welding wire is wound around the wheel, whereby a curvature is imparted to an otherwise-straight welding wire. Also, any twists generated in the welding wire at the welding gun will be stopped at the wheel before reaching and fouling the barrel.

Abstract: An unwinding device for wire or materials containing several wires, having a rotating support for a reel, a coil or the like and a folding roller allocated to a processing device. According to this invention, a dancer is positioned between the support and the folding roller. A constant direction for unwinding and winding is maintained in such as way that the unwound or wound material is directed along the same plane of curvature as the curvature of the reel devoid of torque.

Abstract: The characteristics of the wire are calculated, the wire having a cross-sectional shape which is substantially uniform along its length and having a length long enough in comparison with a diameter being deformed. The wire is divided into a plurality of elements with predetermined spacing along the length. When the wire is deformed, the shape of the wire after the deformation is determined. In the determined shape, a tangential stiffness equation using the element as a basis is calculated, and the calculated tangential stiffness equation is translated into a tangential stiffness equation using the whole of the wire as a basis. A global stiffness equation representing the whole wire is calculated from the tangential stiffness equation obtained by the translation. A load or a displacement produced in each portion of the wire is calculated from the global stiffness equation and the determined shape of the wire.

Abstract: There is disclosed a pipe member rolled up as a coil and roll-formed, the pipe member made of material having a spring-back characteristics and having a specific residual stress distribution existing along a direction perpendicular to the rolling-up direction of said pipe member, the specific residual stress distribution being formed by being wounded around a longitudinal direction thereof by roll-forming, and when the member is unfurled out, two longitudinal edge portions of the member being overlapped to each other thus forming a pipe shape.

Abstract: The invention concerns a device and a method for straightening out damaged metal and plastic elements. The device for straightening out a deformed element is characterized in that it comprises means for exerting pressure (3) on the deformed element (2), means for heating (6) the deformed element, at least a support reinforcement (5) secured to the deformed element (2), optionally a template (7) having the original shape of the deformed element, optionally an external support. The invention is generally useful for repairing deformed metal and plastic elements.

Abstract: A wire straightener is provided which uses three roller sets in one plane to apply deflection forces to a wire, which may have bends or coiling memory in more than one plane, so that the wire exits the wire straightener essentially straight, and free of bends or the tendency to coil and kink. The wire straightener adjusts for changes in pull angle as a means of accommodating different sizes of wires, by freely rotating around a pivot point, so that the amount of wrap of a wire around the last roller automatically adjusts. The wire straightener can straighten more then one wire at a time, and has multiple wire guides for feeding the wire onto the rollers. It is designed so that the wire may be threaded onto the wire straightener in the middle of a length of the wire, without having to feed the wire on using the end of the wire. The wire straightener is adapted for use with wire which has been wound onto a cylindrical spool for storage and dispensing.

Abstract: A method and device for machining a sheet contains a jaw equipped with two plates mounted opposite each other in order to delimit a calibration opening between said plates in which it is possible to vary the spacing between plates. A clamp is provided for grasping the sheet, and the clamp is moved in relation to said plates. The movement of the clamp and the relative position of said plates is coordinated, so as to slide the sheet in relation to said plates while the distance between said plates is controlled. The process includes pulling the sheet by one end so as to separate an initial section from the plane containing the calibration opening and thus pass the sheet through the calibration opening while the plates are kept supported against said sheet, so as to vary continuously the thickness of the sheet while the sheet is passed through the calibration opening.

Abstract: A hot strip mill for reducing metal strip product as the metal strip product is moved through the mill along a pass line includes at least one coiler furnace on one side of the pass line. Each coiler furnace has a coiling unit selectively receiving a strip product from the pass line and at least one drive motor coupled to the coiling unit for rotatably driving the coiling unit. Each drive motor is positioned on the same side of the pass line as the coiler furnace. The drive motor can be easily mounted on a drive motor support above a roller table for the hot strip mill. The drive motor support may be formed as a thermal barrier between the drive motor and the roller table. The present arrangement avoids redesign of the motor room of an existing mill.

Abstract: Procedure and apparatus for the optimized manufacture of coil springs on automatic spring winding machines. It is the object of the present invention to offer both a procedure and an apparatus by which even in case of fluctuating values of the wire parameters high accuracies during the spring manufacture are guaranteed and simultaneously the scrap is minimized. The solution to this problem is that prior to the winding the wire parameters are determined and the measuring results are used directly for the adjustment of the position of the winding pins or winding rollers and/or the pitch wedge, and that the wire between the uncoiling device and the guiding assembly forms a loop whereby the lateral deflection of this wire loop is measured by a recognition unit and the uncoiling device carries out an additional movement controlled by the recognition unit.

Abstract: Methods and apparatus are disclosed for maximizing the strength and deformability of dimensionally-reduced in-situ-formed composites. According the invention, the temperature of the composite is maintained at less than its recrystallization temperature as it is dimensionally reduced, such as by drawing it through one or more dies in a wire-drawing apparatus. The drawing speed and other parameters may be adjusted, as required, to control composite temperature.

Abstract: A machine for rolling an article, such as a rain gutter, from sheet metal dispensed from a coil comprises an elongate base having an input end, at which sheet metal dispensed from a coil is inputted into the machine, and an outlet end, at which an article rolled by the machine is outputted from the machine. An elongate track mounted on the machine and extending between those ends includes a pair of rails extending between those ends. A dispenser for mounting a coil of sheet metal and for dispensing sheet metal from the mounted coil into the machine at the input end is supported on the elongate track, via two dispenser-supporting rollers engaging each rail, so that the dispenser can be selectively positioned on the elongate track in a loading position, near the input end of the elongate base or in a dispensing position, near the output end of the elongate base. The dispenser can be releasably secured in the dispensing position.

Abstract: The present invention is a vane adjustment machine for adjusting contoured vanes on a vane ring. The vane adjustment machine has a support structure with a bench top and a free-floating suspension. The bench top supporting a programmable rotary table which is electrically actuated to rotate a removably mounted vane assembly to bring each contoured vane into a position to be dimensionally measured, heated, and bent. The vane adjustment machine has a trace probe mounted adjacent to the rotary table for engaging each contoured vane and measuring its relative position radially and axially. A torch is mounted adjacent the rotary table to heat each contoured vane individually. A non-contact infrared sensor is on the bench top adjacent to the torch for measuring the temperature of a heated contoured vane. A bending head is suspended by the free-floating suspension over the vane ring to individually engage the trailing edge of each individual contoured vane and bend the-trailing edge to adjust the contoured vane.

Abstract: A rotary apparatus for removing a habitual tendency of an electric wire according to the present invention, has an electric wire twist removing mechanism for removing a twist of an electric wire while the electric wire is travelling. The electric wire is held by and between two-row roller groups such that the electric wire can travel. A rotary member which rotatably supports rollers of the roller groups is attached to a stationary member in a manner rotatable around an axis along the travelling direction of the electric wire. A drive mechanism rotates the rotary member at a predetermined cycle in the direction opposite to a direction in which the electric wire is twisted, thus untwisting the electric wire. Preferably, the electric wire twist removing mechanism also serves as a mechanism for correcting a bend of the electric wire.

Abstract: For loading a processing machine with band-like material from a coil, a rotatable support, on which the coil rests with its axis substantially vertical, is driven by a motor. Since the circumference of the coil decreases during unwinding, a sensor is provided for controlling the motor to maintain a desired constant band speed.

Abstract: In a preferred embodiment, a method and apparatus for forming thin-wall tubing for later welding of the seam thereof which includes tightly rolling upon itself a sheet of thin metal stock about a roller between layers of a flexible fabric. When released from the roller, the sheet metal springs back to form a near-perfect tube without the kinks, scratches, and/or dents commonly caused by conventional rolling methods.

Abstract: A support apparatus for a coil material supply device includes first and second arms pivotally mounted at their proximal end portions on a frame by respective pins, a third arm which has distal end portions of the first and second arms pivotally supported thereon by respective pins, and also has the coil material supply device mounted on an upper end thereof, first and second length adjustment devices for adjusting the lengths of the first and second arms, respectively, and a rotating device for pivotally moving the first arm to adjust the angle of pivotal movement of the first arm. With this construction, the position of the coil material supply device with respect to an intermittent feed device of a mechanical press can be freely adjusted to set the optimum feed condition.

Abstract: Multipurpose device for rolls of sections which are advantageously round bars in rolls for reinforced concrete, the device comprising a rotary turret winder (25) able to bear rolls (17) of sections produced with a hot cold process and including a rotary support (11) having its axis of rotation (12) substantially vertical and supporting along a circumference at least two roll-holder reels (13) with their axes of rotation substantially parallel to the axis of rotation (12) of the rotary support (11), each roll-holder reel (13) cooperating with a specific upright (20), at least one straightening assembly (21) being comprised in cooperation with each single upright (20) of each single reel (13) and being positioned substantially on the same axis as the axis of use of the machine downstream.

Abstract: A method and apparatus for expanding and contouring honeycomb preforms into compound curved honeycomb core sheets. Honeycomb preforms are provided having a plurality of face to face, contiguous, strips bonded together at selected narrow areas such that when strips along opposite edges are moved away from each other a sheet having a repeating array of regular hexagonal cells results. Opposite edge strips are secured to two spaced arms located adjacent to a freely rotatable crowned drum having a surface contour corresponding to the desired honeycomb sheet configuration. One of said arms is pivoted about the drum axis. As the arms are moved apart, a flat partially expanded honeycomb sheet initially develops. As arm movement continues, the sheet then comes into sliding contact with the drum surface. When cell expansion is completed, during the final shaping and setting phase, the honeycomb core sheet is in full contact with the drum surface.

Abstract: A method and an arrangement for continuous tension stretching of thin metal strips. The strip is conducted through a set of brake rollers and a set of pull rollers and the strip is subjected to a stretch-forming or stretch pull operation between the two sets of rollers for stretching the strip in the plastic range, wherein the stretch pull force corresponds to the yield point of the strip material. The strip is subjected between the set of brake rollers and the set of pull rollers only to a stretch-pull which is required for stretching the strip in the plastic range. As a result, transverse elongation during plastic stretching is minimized, so that center troughs no longer occur and, when the strip is longitudinally divided, the strip portions no longer have unequal side lengths.

Abstract: In a device for planing a sheet metal strip under tension as applicable in particular to rolling mills, the strip is passed between at least two small-diameter working rolls while being subjected to alternate flexural deformations in opposite directions as well as a third working roll located downstream with respect to the first two rolls and supported by a frame which is capable of adjustable pivotal displacement with respect to the first two rolls.

Abstract: A method of continuously straightening metal strip comprises directing the strip over devices which act on the strip to effect its straightening by first causing a stretching and leveling and thereafter stretching and bending. The device for continuously straightening the thin metal strip comprises a plurality of entrance rollers arranged in succession at an entrance portion and a plurality of delivery rollers arranged in succession at a delivery portion with a stretching and bending device arranged between the two portions. The metal strip is guided over the entrance and delivery rollers as the rollers are driven by a drive motor and a common device member driven by the motor. At least two of the entrance rollers and at least two of the delivery rollers are tensioning rollers. A differential is included in the drive of each tensioning roller and it includes an overdriving motor with an adjustable speed.

Abstract: A long flexible metal clad laminate, which has a thin aromatic polyimide film formed on a long metal foil, is caused to slide under tension, along its length, on curved surfaces of four bars arranged at specific positions, so that its curls are corrected and its dimensional stability is improved.