Abstract: An apparatus forms a sheet into a beam having four exterior walls and a common center leg extending between an opposing two of the walls. The apparatus includes a roll former forming the sheet into the beam cross section, a welding station with top and bottom laser welders, and a weld box fixture having inwardly-biased external mandrels (biased by actuators) and outwardly-biased internal split mandrels (biased by springs) that interact to hold a desired shape of the beam in the weld fixture, and also includes a sweeping unit and cutoff device. By this arrangement, the internal and external mandrels, in combination with a bias of the actuators and springs, control a shape of the beam by flexure and movement of material of the sheet when in the weld box fixture during a welding process of the welder.

Abstract: A method for detecting a foreign particle trapped between substrates of a liquid crystal display panel, by which a potential short caused by the particle can be made into a short with reliability, and thus it is possible to make a display defect manifest itself that is caused by the particle. The method is for detecting the presence of a foreign particle trapped between flexible substrates (21, 26) of a liquid crystal display panel (20), between the substrates liquid crystals filled, and the method includes making the panel pass between supporting rollers (3) arranged to support one surface of the panel, and a pressing roller (4) disposed at a position opposed to a space between the supporting units and arranged to press the other surface of the panel, bending the panel, and displacing the substrates with respect to each other in their surface directions.

Abstract: There is provided a method of bending a medical suturing needle curved at different curvature radii in a length direction more reasonably.

Abstract: A hydraulic circuit for linearly driving a movable roller-holder slider of a pipe bending machine, comprising a hydraulic cylinder (5) whose piston rod is connected to a slider holding a movable roller, the cylinder being fed with pressurized fluid from a reservoir (16) by a pump (15), through a three-position four-way valve (18), a check valve (12, 13) and an interposed throttling valve (19), that is operated to generate an increased pressure in said low pressure chamber of the hydraulic cylinder (5) in order to slow down the slider holding the upper roller in its primary motion when a programmable interval is reached from said predetermined position for each working pass.

Abstract: A method of manufacturing an aluminum alloy wheel, comprising the steps of producing an elongated strip of alloy blank with a desired cross-section by squeezing an alloy material, pre-curving the two ends of said blank into arcs, placing one end of said blank between an upper main roller and a lower main roller of a rolling machine to hold said blank, when said blank is being held by said upper main roller and said lower main roller and being driven back and forth along the longitudinal direction, approaching two auxiliary rollers of said rolling machine toward the two sides of said upper main roller to push said blank, so that said blank follows the curve established by a holding point between said upper main roller and said lower main roller and pushing points of said auxiliary rollers to progressively coil into the shape of the desired aluminum alloy wheel.

Abstract: A hydraulic circuit for linearly driving a machine-tool slider in both directions, comprising an hydraulic cylinder (5) whose piston rod (4) is connected to a slider and which is fed with pressurized fluid from a reservoir (14) by a pump (15) through a three-position four-way valve (18), a check valve (12-13), and between the last ones, a pair of throttling valves (19, 19?) which are mounted symmetrically each other and operated to generate an increased pressure in either one or the other chamber, which is at the moment in a low pressure, of the hydraulic cylinder (5) in order to slow down said slider in its work motion in both directions of linear travelling when a programmable interval is approached from a predetermined position for each working pass. Situated in the bypass (190, 190?) of each throttling valve (19, 19?), among the same valves (19, 19?) and the hydraulic cylinder (5), is a manual flow control valve (20, 20?).

Abstract: The present invention relates generally to a method and apparatus for temporarily reforming or deforming the lip portion of a resinous seal so that the seal may be readily installed in an intended application. The invention includes a method and apparatus that includes a fixed frame unit having two leg portions and a backbone portion, a slot in each position, an axle in each slot, and roller assemblies received over each axle, with adjustment means for each axle, the guide rollers being circumferentially spaced apart and the center or reforming roller being adjustable.

Abstract: The present invention comprises a portable platform (10) for use in gasket manufacture, comprising a shaft connected to a motor and can receive at least one mandrel, and a surface to receive at least one molding tool, the mandrel being activated by the motor to turn in relation to the platform (10) and to the tool, and to move gasket-forming elements, such as metallic or non-metallic strips, among others, to be processed by the tool. Moreover, as much the mandrel as with the tool are replaceable respectively between mandrels and tools with different characteristics. Thus, the same platform (10) may produce different types of gaskets, and, consequently, speed up and facilitate the gasket replacement process.

Abstract: A bending device for bending plastically deformable strip material. The reverse bending that is required for workpieces with narrow processing tolerances in particular takes place independently of the actual bending. This increases the processing precision of the workpieces and simplifies the numerical control of the device. The reverse bending unit is moveably arranged on the bending unit in the bending device.

Abstract: A machine for bending pipes (2; 63; 78) sections or similar of a given section (S1; S2; S3) has a guide device (6) having a longitudinal axis (9) for guiding the pipes (2; 63; 78) in a feed direction (D1) parallel to the axis (9); and a bending member (7) movable with respect to the guide device (6) in a plane (P1) perpendicular to the feed direction (D1), and having an annular guide (50), which has a passage section (45; 61; 76) for the pipes (2; 63; 78) substantially equal to the section (S1; S2; S3) of the pipes (2; 63; 78) and is defined by rollers (40; 52; 82; 67) rotating about respective axes (41; 53; 83; 68) lying in a plane coplanar with the passage section (45; 61; 76).

Abstract: A machine for bending sections (2) having a longitudinal axis (3) and a constant cross section along the longitudinal axis (3) feeds the sections (2) longitudinally in a first direction (D1), and has a first and a second annular die (11, 12); an ass (15) connected to the second annular die (12) and movable in a plane perpendicular to the first direction (D1) to move the second annular die (12) into a number of operating positions with respect to the first annular die (11) to bend the sections (2); and a joint (22; 39) connecting the first and the second annular die (11, 12), and which forces the second annular die (12) to assume a given position with respect to the first annular die (11) for each position assumed by the assembly (15).

Abstract: A portable workpiece bending apparatus selectively bends an elongated workpiece at selected portions of the workpiece along its length. The apparatus allows transaxial loading and unloading of the workpiece. The apparatus includes a frame. Three rollers are rotatably mounted on the frame. Each of the rollers is engageable with a workpiece, while the workpiece moves along its length to bend the workpiece as it moves along its length. An actuator is connected to one of the rollers for re-positioning that one roller relative to the other two rollers to allow the roller to be disposed from an operative position engageable with the workpiece to a spaced apart position from the other two rollers. Positioning of the one roller to the spaced apart position allows the workpiece to be positioned for engagement with the rollers for bending by moving the workpiece transverse to its direction of movement.

Abstract: A machine for bending tubes (1) with small diameters, which are pre-cut and provided with connection systems at both ends. This machine comprises elements (5) for grasping the rear end of the tube (1), elements for entrainment of the grasping elements according to a longitudinal axis, and at least one bending head, comprising two forming rollers (7, 8), each of which has at least one peripheral groove, a folding finger (23), which is associated with a unit (24) for displacement according to a circular path which is centered on an axis (Y) at right-angles to the axis (X), and with a system (29) for displacement in translation according to an axis (Y1) which is parallel to (Y), and guide units for the tube (1), which are disposed upstream and in the vicinity of the forming rollers (7, 8).

Abstract: A bending machine includes a bending head with three bender rollers, one of which is vertically displaceable with a double-acting cylinder having a cylinder body inside the bending machine frame and below the bending head. A work surface is above the bending head and provided with an opening coaxial with the double-acting cylinder. The work surface includes a support for a tool driven by the cylinder.

Abstract: The invention features a sheet metal bending machine constituted by a smooth carrying roller around which the sheet metal is rolled, after bending, and by smooth press rollers against which the carrying roller presses, is characterized in that the carrying roller (2) is supported at one end by a fixed bearing (15) and at its other end by a retractable bearing (18), and in that the press rollers (3, 4) are supported, directly or indirectly (support rollers) by a plurality of bearings (5) supported by a control mechanism called "inclined blocks". (7, 8).

Abstract: A bending machine includes a bending head with three bender rollers, one of which is vertically displaceable with a double-acting cylinder having a cylinder body inside the bending machine frame and below the bending head. A work surface is above the bending head and provided with an opening coaxial with the double-acting cylinder. The work surface includes a support for a tool driven by the cylinder.

Abstract: Universal pipe bender comprising a geared motor (1; 11); a box, on a working table whereof two or more pairs of hollow rotary motion drives having fixed parallel rotation axes (2, 2a; 2', 2a'; 2", 2a"; 12, 12'; 12a, 12a') intended to receive, interchangeably and integrally in rotation, in their concavity respective roller hearing mandrels (200) and to transmit to the latter rotary motion impressed by said geared motor through gears arranged in said case, and a through slide (4, 40) that can be slidingly operated and fixable in position in a through guide (4') provided in said case, on the same side where said rotary motion drives open, which traverses the fixed interaxes of said pairs of rotary motion drives, and which mounts one or more further roller hearing mandrels (5, 5'; 50, 50').

Abstract: A shaping machine for bending a plate into a cylindrical shape which comprises a frame and first, second, and third roll assemblies disposed on the frame. Each of the roll assemblies includes a roll for engaging a plate to be bent and a plurality of pairs of support rollers axially distributed along and supporting the roll. There is a drive disposed at the frame for rotatably driving each of the rolls of the first, second, and third roll assemblies, and at least one of the roll assemblies is displaceable transversely to the longitudinal axis of its roll.

Abstract: A metal tubing rolling apparatus positions a metal tubing section between three Nylon rollers for bending into a desired curvature. The middle roller is adjustably mounted to be raised and lowered and to preset the degree of arc to be placed in the portion of the tubing section between the fixed rollers. A constraining mounting for the middle roller permits vertical travel of the middle roller while maintaining a coplanar relationship with the fixed rollers.

Abstract: A bending machine for shaping a flat sheet into a cylinder or cone by passing the sheet between a support roll and a train crenelated rolls having parallel axes. The crenelated rolls are subjected to pressure by a train of press rolls having axes parallel to those of the crenelated rolls.

Abstract: The invention relates to a bending apparatus for wires having a cross section which varies according to their lengths, and comprising two cylindrical sections and an interleaved conical section. The wire is bent by means of three rollers. The bending roller is mounted on a carriage and determines the bending degree imparted to the fed wire. The wire is bent despite its variable diameter so that it is deposited with a regular curvature on the reception plate. To this effect, the curvature of the conical section is changed between the correct curvature of the thinner cylindrical section of the wire and that of the thicker cylindrical section of the wire. It only requires a simple switching at an appropriate time to obtain a sire bobbin which may be deposited on the reception plate. The appropriate switching time is situated between 20% and 60%, but preferably between 30% and 40%, and is calculated from the beginning of the wire diameter increase.

Abstract: Plane, rectangular sheets (10) are moved through between a driven bending roll (32) and a plurality of back-up rolls (34) and are bent round the bending roll (32) by these rolls and a plurality of pressure rolls (52, 56) disposed behind the bending roll (32) and back-up rolls (34). The almost completely rounded sheet (10) is bent resiliently away from the bending roll (32) by a deflecting member (62) as a result of which the front edge (10a) of the sheet is prevented from re-entering the gap between the bending roll (32) and the back-up rolls (34) before the rear edge (10b) of the sheet has travelled through this gap. Then the deflecting member (62) is moved back into its position of rest so that the front region of the sheet (10) springs back in the direction of the bending roll (32) and as a result is again gripped by the bending roll (32) and the back-up rolls (34) and moved through between them.

Abstract: The method and apparatus for rolling a section of metal plate into a cylindrical pipe section wherein leading and trailing edges of said plate section are pre-crimped to the final desired radius of said cylindrical pipe section, feeding the leading edge of said plate section into a forming mill that includes an overhead mandrel having a radius approximating said final desired radius of said pipe section, forcing said mandrel to deflect along the length thereof during the forming of said plate section between said mandrel and a pair of driven bending roll means whereby said mandrel and said bending roll means are maintained at the same curvature throughout the length thereof and said plate section is uniformly bent along the length thereof to said desired final radius.

Abstract: The bending machine comprises two pairs of parallel feed rollers between which the pipe is fed in a given first direction, and a slide moving in a second direction perpendicular to the first and having a pair of bend rollers turning on it in idle manner; each of the said rollers being designed to press against and bend the said pipe subsequent to displacement of the said slide, and means being provided for lowering and clearing one of the said rollers from the said pipe when the other said roller is forced against the same for bending it subsequent to displacement of the said slide.

Abstract: The method and apparatus for rolling a section of metal plate into a cylindrical pipe section wherein leading and trailing edges of said plate section are pre-crimped to the final desired radius of said cylindrical pipe section, feeding the leading edge of said plate section into a forming mill that includes an overhead mandrel having a radius approximating said final desired radius of said pipe section, forcing said mandrel to deflect along the length thereof during the forming of said plate section between said mandrel and a pair of driven bending roll means whereby said mandrel and said bending roll means are maintained at the same curvature throughout the length thereof and said plate section is uniformly bent along the length thereof to said desired final radius.

Abstract: A multi-dimensional bending method and apparatus are disclosed, wherein the entire length of the product is divided into a plurality of imaginary segments which are identified by detecting the continuously supplied length of an elongate material. This material is bent multi-dimensionally by a bending device including horizontal and vertical bending mechanisms and an axial twisting mechanism having the respective actuators arranged remote from the movable elements of the mechanisms, and individually actuated in response to the detected supplied length of the material. Multi-dimensionally bent, continuously supplied material is cut into the length of the product by means of a cutting device also actuated in response to the detected supplied length of the material, and includes fixed and movable blade members which, during the cutting operation, and movable also in the direction in which the material is supplied.

Abstract: The method and apparatus for rolling a section of metal plate into a cylindrical pipe section wherein leading and trailing edges of said plate section are pre-crimped to the final desired radius of said cylindrical pipe section, feeding the leading edge of said plate section into a forming mill that includes an overhead mandrel having a radius approximating said final desired radius of said pipe section, forcing said mandrel to deflect along the length thereof during the forming of said plate section between said mandrel and a pair of driven bending roll means whereby said mandrel and said bending roll means are maintained at the same curvature throughout the length thereof and said plate section is uniformly bent along the length thereof to said desired final radius.

Abstract: The invention relates to a method of rolling tire rim blanks from flat metal strips obtained by unwinding strip material from a coil which is cut into strips of desired lengths which are then rolled into a circular shape by anvil rolls cooperating with bodily moveable bending rolls producing a controlled flat portion on the leading end of the strip prior to rolling and another controlled flat portion on the trailing end of the strip following the rolling.

Abstract: In general, the present invention provides processes and apparatus for bending and straightening, or otherwise installing marine pipelines at underwater installations, and includes systems in which marine pipelines are installed at water depths to 250 feet or more, utilizing an underwater chamber which may be operated with its interior wet, dry or combinations thereof. In one form, the system provides for interconnecting wellheads or other stations with manifolds or other stations and comprises running marine pipeline generally vertically downwardly from the water surface into the work chamber, mounted in operative association with an underwater wellhead or station, wherein the pipe is bent in the desired radius and through the desired angle and then straightened to exit from the chamber and wellhead in a substantially horizontal attitude such that it may then be pulled to a manifold or other underwater station with, for example, a wire line.

Abstract: Apparatus for forming circular rims for bicycle wheels from metal profiled strip material in which first strip pieces are cut to a length corresponding to the circumferential length of the rims, curved end portions are formed on each strip piece, and each strip piece is introduced into a three-roll ring rolling apparatus. After the strip piece has been worked up to the trailing curved end portion thereof, the adjustable middle roll of the rolling apparatus is shifted a small distance towards the two outer rolls into a position corresponding with a substantially bending-free passage of the trailing curved end portion of the strip piece.

Abstract: A roll-type machine for forming a cylindrical metal body from an initially flat sheet of metal; such cylindrical body being for use in the manufacture of tanks for air, gas, or water. The machine includes a forming roll which is mounted and controlled in a manner to automatically retract from its normal, fixed working position immediately prior to completion of formation of the cylindrical metal body whereby to prevent otherwise attendant out-of-round deformation of said body.

Abstract: The machine comprises a frame, a first roller rotatably supported by the frame and a second roller rotatably supported by the frame and disposed below the first roller to cooperate therewith. A gear is secured to the first roller to be rotatable therewith meshes with at least two pinions, each mounted on the shaft of a respective pressure-fluid operable motor. A pump is connected to each of the pressure-fluid operable motors to supply pressure-fluid in common to the motors so that all the pressure-fluid operable motors operate in synchronism.

Abstract: A method of forming circular rims for bicycle wheels from metal profiled strip material in which first strip pieces are cut to a length corresponding to the circumferential length of the rims, curved end portions are formed on each strip piece, and each strip piece is introduced into a three-roll ring rolling apparatus. After the strip piece has been worked up to the trailing curved end portion thereof, the adjustable middle roll of the rolling apparatus is shifted a small distance towards the two outer rolls into a position corresponding with a substantially bending-free passage of the trailing curved end portion of the strip piece. The invention further relates to a pressing apparatus for forming the curved end portions of the strip pieces and to a three-roll ring rolling apparatus for carrying out the method.

Abstract: The machine comprises a frame, a pair of nip rollers, two side-rollers disposed on respectively opposite sides of the nip rollers, and four pressure fluid operable devices each displaceably supporting a respective end portion of one of the side-rollers. Each pressure fluid operable device comprises a cylinder and a piston provided with a rod extending through one end portion of the respective cylinder to bear against the frame, the respective other end portion of each cylinder defining a housing provided with bearing means for the respective side-roller end portions and each cylinder being displaceably mounted in guide means.

Abstract: A bending rolls machine having the intermediate roll and shaft thereof driven from a "linking chain" by a gear located at the pivot point of a pivot member carrying the intermediate roll and shaft on the distal end of the pivot member, and the pivot-point gear being driven by another intermeshed engaged gear, and the two spaced-apart rolls being driven through a link-chain drive, and there being push buttons requiring pressure to continue to drive the rolls forwardly or alternately reversedly rotatably, and alternate automatic-run buttons for continuing to drive once initiated, and an emergency-stop lever-button to over-ride other buttons.

Abstract: A machine bed supports stationary and rotary fixing means that are aligned for receiving bar stock therebetween. Electrical or electromechanical control means are provided for selecting and effecting, via a motor-driven step-down gear, exactly a predetermined amount of rotation of the rotary fixing means. Various detachable matching pieces hold opposite portions of the bar stock within the stationary and rotary fixing means, respectively, while the material is worked. Openings in the matching pieces positively fit the bar stock. The outer contour of the matching pieces permits insertion in the stationary and rotary fixing means for positive fit therein. A preferred embodiment of the apparatus serves the purpose of cold twisting square steel bars either singly or, for obtaining volutes, in bunches. Removal of worked bar stock is facilitated by a handwheel enabling the operator to manually counter-rotate the rotary fixing means by a selected small angle.