Abstract: A device for manufacturing, by extrusion, a piece having a recessed portion in its lateral surface, and, on one side, a head and, on the opposite side, a tail, which device comprises a fixed die holder containing a die, a punch borne by a mobile support and structure for axially displacing the punch to engage it in the die and to disengage it therefrom together with means for ejecting the extruded piece. The device further comprises, in front of the fixed die holder, a coaxial mobile die holder composed of two parts, forming clamp. A spring and cooperating cams are provided for opening and closing the mobile die holder-forming clamp and an actuator is provided for displacing the mobile die holder in translation parallel to the axis of the punch and of the die.

Abstract: A double action draw press having inner and outer rams reciprocal with respect to a fixed base for forming two piece containers such as beverage or food containers from metal sheet stock. The apparatus includes a pressure system carried by the outer ram and adapted to hold the material during the drawing operation. The apparatus also includes a drawing horn secured to the inner ram and movable independently of the pressure sleeve system. The drawing horn has an inwardly directed recess in its outboard end which communicates with an internal air passage leading to a source of air pressure. This structure permits use of an improved method of removing the formed can from the press by permitting air pressure to be applied to the interior wall surfaces of the drawn container as the press opens to move it out of the press for further processing.

Abstract: A double-blow header particularly suited for producing semitubular rivets is disclosed. The header is provided with three separate adjustments for controlling the position and operation of the extrusion pin, all of which can be adjusted while the machine is operating. A first adjustment determines the rearwardmost position of the extrusion pin and, in turn, adjustably determines the mass of material contained within the shank of the workpiece. A first powered drive adjustably determines the stroke of the extrusion pin during a piercing operation without altering the rearwardmost position thereof. A second powered drive adjustably determines the kickout stroke without altering the final position of kickout. The kickout drive adjustment and the first adjustment are interconnected so that both of them are adjusted in a related manner.

Abstract: A method is disclosed for removing a part from a die, the part having been produced by clamping a preform between first and second dies and forming at least a portion of the preform into a cavity of the first die. The method comprises the steps of drawing a vacuum from between at least a portion of the formed preform and the second die and separating the second die from the first die such that the part is withdrawn from the cavity of the first die. In a preferred embodiment, wherein the part is clamped abouts its periphery, the method involves the additional steps of providing a channel about at least a portion of the second die aligned with and in communication with the periphery of the preform, and providing sealing members to seal off the channel. The vacuum is then drawn from the channel.

Abstract: A method and apparatus for forming a cylindrical wall-ironed sleeve having a bottom and a radially inwardly enlarged wall thickness at an end remote from said bottom with there being an internally tapered transition region between a normal wall thickness and the enlarged wall thickness, said method including the forming of the sleeve on a mandrel with said enlarged wall thickness being interlocked with said mandrel; the step of introducing a fluid under pressure through the mandrel between the mandrel and the sleeve at the transition region of the sleeve to momentarily radially enlarge the end of the sleeve remote from the bottom and release the inter-lock between the sleeve and the mandrel.

Abstract: An improved workpiece ejecting system for presses includes an ejector piston hydraulically driven in response to reciprocation of the press slide in a manner whereby the motion of displacement of the ejector piston corresponds to the motion of displacement of the press slide during the stroke thereof, and the extent of displacement and velocity of the ejector piston are proportional to the corresponding characteristics of the slide. Ejector piston displacement is achieved by the flow of hydraulic fluid to and from the ejector piston chamber during reciprocation of the press slide through its total stroke. Ejector pins of various lengths are selectively associated with the press tooling and ejector piston to provide for varying the length of the workpiece ejecting stroke.

Abstract: Apparatus and method for discharging flanged cups in a controlled oriented fashion from a blanking and forming press. The formed cup is raised to a position slightly higher than the upper face of the drawing die, and moved in a straight line by means of a high pressure air pulse to the inlet of a conduit-like discharge chute. The formed cups are moved through the discharge chute by air pressure issuing from angled slots in the walls of the chute. The invention is particularly advantageous for use with blanking and forming presses simultaneously producing a plurality of formed cups in order to discharge the formed cups separately from each station in an orientation substantially the same as that in which the cup was formed. The invention eliminates damage to the formed cup caused by random bulk handling in conventional discharge equipment.

Abstract: A double action draw press having inner and outer rams reciprocal with respect to a fixed base for forming two piece containers such as beverage or food containers from metal sheet stock. The apparatus includes a pressure system carried by the outer ram and adapted to hold the material during the drawing operation. The apparatus also includes a drawing horn secured to the inner ram and movable independently of the pressure sleeve system. The drawing horn has an inwardly directed recess in its outboard end which communicates with an internal air passage leading to a source of air pressure. This structure permits air pressure to be applied to the interior surfaces of the drawn container as the press opens to move it out of the press for further processing. The horn is capable of being rotated about its longitudinal axis and fixed in any desired position so that this air passage is capable of being precisely directed whereby the air applied to the container will direct the container in a predetermined direction.

Abstract: A new and improved die stripping apparatus is provided for use in a body forming apparatus wherein a punch forces a metal blank through a die by means of a ram. This apparatus includes a platform located in a plane perpendicular to the punch and ram, and the platform has a die opening formed therein. Means are provided for forming a plurality of channels in the platform wherein each of the channels has a longitudinal axis parallel with the plane of the platform and located on a radii of the die opening. A corresponding plurality of segments are slidably mounted in the channels and biased inwards towards the die opening.

Abstract: A drawing and ironing assembly consists of a redraw assembly, at least one ironing assembly and a stripper assembly that cooperate with a punch to redraw a cup and then iron the sidewall thereof. The redraw assembly includes a support and a redraw ring which are also biased to a centered position and a floating air bearing is defined between the support and the frame surface to reduce friction while a nesting ring is located adjacent the redraw ring. Lubricating means are provided for creating a generally circumferential flow into the opening in the nesting ring. The stripper assembly includes a support which carries the stripper elements and the support is biased to a centered position with respect to a predetermined axis or path for the punch and fluid is supplied to relatively movable surfaces to assist in reducing friction.

Abstract: A mechanism incorporated in a die forming machine which includes a rotating blade driven in a timed trajectory such that the blade hits a blank, at or about the instant of its discharge from the die, and propels the blank forcibly out of the path of a moving gate in the direction of the blank chute in order to expedite its removal from the working area.

Abstract: A kickout pin support system for forging machines or the like is disclosed in which a plurality of support members are provided to support the kickout pin at intermediate locations along its length so that the pin is not damaged by the loads applied thereto. The support members are movable to predetermined, spaced support positions by air pressure, and in such positions engage associated stop surfaces along the length of the passage in which they move. With the invention, proper support can be provided for a knockout pin of substantially any length by providing an appropriate number of support members spaced along the length of the knockout pin when the pin is in its retracted position.

Abstract: In an improved crank press arrangement including a sled which is reciprocally mounted on the frame of the arrangement. A toggle lever is pivotably mounted on the sled. One arm of the toggle lever has a cam-follower roller whereas the other arm coacts with an ejector arm slidably mounted in the sled. A crank drive reciprocates the sled. A control cam is in contact with the cam-follower. The ejector rod coacts with a blank and a die to form a workpiece. The crank drive and control arm are operatively connected by means of a gear train. The contour and shape of the control cam is such that while the cam-follower roller is in continuous contact therewith, nevertheless a temporary standstill of the ejector rod occurs during the operative cycle of the arrangement.

Abstract: A hydraulic trim press has a bed, stationary platen and a movable platen. The movable platen moves between the stationary platen and the bed on tie rods. The movable platen is driven by two spaced apart hydraulic cylinder and piston arrangements connected to a hydraulic circuit. A hydraulic tank for storage of hydraulic fluid is attached to the underside of the stationary platen. A manifold is secured to the top of the stationary platen to direct hydraulic fluid to the control valves and cylinders.

Abstract: In electrical terminal crimping apparatus comprising two crimping dies so mounted that one die is constrained to move towards and away from the other die, a wheel having circumferentially spaced, outwardly extending vanes is rotatably mounted with respect to the dies and a pawl, operatively connected to the movable die, is adapted to engage a ratchet, carried by the wheel, to effect partial rotation of the wheel. After a terminal has been crimped to an electrical lead and as the movable die moves away from the fixed die, the pawl automatically engages the ratchet and causes the wheel to rotate so that a vane pushes the terminated lead laterally from between the dies to a sufficient extent to permit the stripped end of another lead to be positioned between the dies.

Abstract: In a forming press, toggle-type punch stripper actuation mechanism for mechanically driving the punch shoe in a direction to strip the workpiece from the punch as a function of the relative movements of the punch and stripper sleeve.

Abstract: A stock lifter for supporting and guiding strip stock materials during progressive die operations, and wherein the stock lifter has an annular groove adjacent its upper free end for supportingly receiving and guiding strip stock material. Shoulder means is provided along the body of the stock lifter for engagement of a hold-down fastener means therewith in mounting the stock lifter in a supporting die. The annular nature of the groove of the stock lifter permits the stock lifter to be installed with a hold-down fastener located at any point around the periphery of the stock lifter, thus allowing the supporting die member to be formed of reduced width and therefore a savings of material and attendant costs.

Abstract: The present invention is related to pneumatic stripping for use with metal forming machines, including neckers, that are used in the production of thin shell vessels such as beverage cans (60). In prior art devices, pneumatic stripping has been advantageously used for removing a beverage can (60) from the punch portion (18) of a die set (16); but this use of compressed air has been accompanied by objectionably high noise levels. The present invention provides an expansion chamber (50), that is formed by a recess (48) in an end (30) of the punch (18) and that reduces the noise level of pneumatic stripping. Principle uses include noise reduction on machines that are used to inwardly dome the bottom of beverage cans and on machines that are used to neck down the open ends of beverage cans.

Abstract: A progressive stage forging machine is provided for forming an article in stages by means of a plurality of dies and cooperating punches, carried on a ram, wherein more than two forging blows are required to complete the forming of the article. The invention particularly provides a forging machine of the three-blow type having three punches and three cooperating dies, wherein two of the dies are carried on a member to permit alternating changes of position of those two dies, thereby eliminating a transfer mechanism between the two dies and achieving a one hundred percent increase over the production rate of presently available forging machines of the three-blow type.

Abstract: The ejector pin for ejecting a workpiece from a die of a stamping machine is actuated by means of a cam shaft oscillated back and forth on the machine frame through less than one revolution, a radial cam mounted on the shaft, and a motion transmitting rocker carrying a cam follower. The stroke of the ejector pin can be set by angularly shifting the position of the cam on the shaft, the angular length of the cam shaft being greater than the angular spacing of the terminal shaft positions. The portion of the cam face first engaged by the cam follower during the working stroke of the ejector pin spirals uniformly outward from the cam shaft axis to an outermost position which is reached before the cam shaft movement stops.

Abstract: A device for the ejection of a shaped part at the male die on a cross-feed press for non-cutting metal shaping is equipped with an ejector which is controlled by the crank-pin of a crankshaft via a connecting link, a cam disc and a roller arm. The cam contour P of the cam disc has an arc K concentric to the rocker shaft and joined to a straight section G and a runout section L. The cam disc has a displaceable cam shoe the outer edge of which is located in the plane of the straight section G and which extends or shortens the straight section G when shifted. This ensures that the standstill condition of the ejector with respect to the female die, required for holding the shaped part, may be retained even when adjustments are made to the length of the stroke of the ejector at the male die at the cam disc.

Abstract: Apparatus for the forming of long workpieces, such as bolts, spindles, shafts, etc., in a press with shaping tools mainly consisting of a plunger and a die. An ejection channel for the workpiece passes through the plunger and is situated around the axis of the latter. The apparatus includes at least two opposed clamp jaws mounted for controlled movement toward and away from each other, and situated in the plunger but outside the ejection channel, the jaws gripping the workpiece before the processing of the latter and conveying it in a centered position to the processing point, the jaws at that time entering the said ejection channel. After the workpiece has been processed by the plunger and die, the plunger with the workpiece held by the jaws thereon return to their initial positions. The apparatus of the invention can be used to advantage in presses with conversion tools having multiple stages each with a plunger and die wherein the workpiece is transferred from one stage to the other.

Abstract: A mechanism for unloading a part which is retracted upwardly with a tool and which remains on the tool as the latter begins its downward stroke. The mechanism includes a tray which initially is moved into position to remove the part from the tool as the tool starts through its downward stroke. After removing the part, the tray catches the part and then shifts clear of the downwardly moving tool and discharges the part.

Abstract: A press, comprising a frame supporting an upper and lower bed for attachment of an upper and lower bolster, the upper and lower bolster each carrying mating halves of a complementary die, and the upper bolster having a knock-out opening therethrough, a hydraulic knock-out means carried by a drive means above the upper bolster that is adjustably electro-mechanically timed to cooperate with pins internal to the upper bolster to eject any work that may have remained in the upper die upon separation of the two mating die halves.

Abstract: A brake shoe assembly and an apparatus and method for making same wherein the brake shoe includes a pair of spaced parallel arcuate ribs having outside radii secured to the underside of an arcuate plate with the inside radii of the arcuate ribs having a greater thickness than the outside radii. In accordance with the apparatus and method for making the brake shoe assembly, a straight length of rectangular bar stock having opposite faces is bent into an arcuate shaped member while maintaining the bar stock substantially flat with the opposite faces extending transversely to the axis of bending at a bending station. Subsequently, a plurality of holes are pierced between the opposite faces of the arcuate member at a piercing station.

Abstract: A reciprocal ram at commencement of a forward strokes engages a cup-shaped article carrying it through metal working dies and against a doming die at reversal into a rearward stroke immediately followed by stripping of the article from the ram. The ram has an internal chamber constantly fed pressurized air through a rearward restricted orifice, the chamber opening freely of the ram forward end portion and internally of the article when thereon. By preselecting orifice size, chamber and article volumes matched with air pressure, a predetermined volume of air at predetermined pressure is confined in the ram forwardly against the article immediately prior to stripping and preferably engagement of the article by an external stripper results in an internal stripping assist by the confined pressurized air, the increasing exposed volume of the article increasing the air confinement volume reducing the air pressure progressively to substantially atmospheric at completion of article stripping.

Abstract: Rod end caps and the method of forming same comprising the steps of using a flashless, closed die set, a predetermined shape and volume billet, warm forging temperatures, and a unique ejector. The ejector pin defines part of the mold cavity when retracted, ejects the finished parts when extended, and locates new billets when in an intermediate position.

Abstract: Method and apparatus for preparing a liquid sample for combustion and analysis in an elemental analyzer. In order to avoid damage to the quartz combustion tube and ladle by molten aluminum, the sample is placed in an aluminum foil vial which is crimped and placed in turn in an open ended capsule of nickel or other non-reactive metal. The capsule is then distorted by a novel encapsulator to partially obstruct the open end and retain the liquid sample vial therein during the combustion process.

Abstract: A cyclically operable machine having a work station where a blank is deformed into a work product and in which the work product is ejected on to a conveyor oscillated between that station and another conveyor to which the work product is delivered synchronously.

Abstract: A reciprocal ram at commencement of a forward stroke engages a cup-shaped article carrying it through metal working dies and against a doming die at reversal into a rearward stroke immediately followed by stripping of the article from the ram. The ram has an internal chamber constantly fed pressurized air through a rearward restricted orifice, the chamber opening freely of the ram forward end portion and internally of the article when thereon. By preselecting orifice size, chamber and article volumes matched with air pressure, a predetermined volume of air at predetermined pressure is confined in the ram forwardly against the article immediately prior to stripping and preferably engagement of the article by an external stripper results in an internal stripping assist by the confined pressurized air, the increasing exposed volume of the article increasing the air confinement volume reducing the air pressure progressively to substantially atmospheric at completion of article stripping.

Abstract: An improved knockout mechanism for forging machines or formers is disclosed in which the position of the knockout pin during the working operation of the machine is adjustably located by a tube nut threaded into the machine frame. In one embodiment, the tube nut is releasably locked in the adjusted position by a plate threaded onto the tube nut having a fulcrum on one side of the tube nut and a jackscrew on the other side at a location spaced from the tube nut greater than the spacing between the fulcrum and the tube nut so that a forced multiplication lever action is provided and secure locking is achieved without excessive jacking forces. In another embodiment, locking is provided by a lock nut threaded on the tube nut and connected to a fulcrum plate by a trunnion. A carriage is provided on the machine frame which supports means to operate the jacking screw and adjust the tube nut from locations accessible to the operator.

Abstract: An ejector mechanism associated with the punch or punches in a header, operable to free the work blank from the punch after a heading blow so that the blank may remain in the die for a further forming blow, the mechanism including timing means to insure actuation of the ejector at the moment when the punch starts its withdrawal movement, as well as clearing of the ejector to prevent transmission of a load to the ejector mechanism on the heading blow.

Abstract: An automatic rotary die forging press includes a pair of vertically arranged top and bottom die bolsters each having a polygonal section and rectangular faces corresponding to those of the other bolster. The top die bolster having as a bearing thereof a suspended holder supported in a ram and the bottom die bolster having as a bearing thereof a stationary holder supported in a frame and both supported rotatably. The press further includes a rotary drive mechanism for rotating said top and bottom die bolsters simultaneously, uniformly and intermittently in the same direction.

Abstract: Apparatus, for stripping an article from an axially reciprocable punch, of a kind having a plurality of segments surrounding the punch, each of said segments having a working surface resiliently urged radially inwards towards the punch and engaged with a piston, said piston being supported by fluid means for limited motion in a piston plate, parallel to the axis of the punch, to enable the working surface of the segment to contact the edge of the article before stripping wherein the improvement resides in a fixed guide means to confine a pivot portion of each segment for pivotal movement in a plane radial to the punch, individual biasing means to urge each segment substantially longitudinally towards the punch, and a cam ring having a surface which engages with a heel portion of each segment to guide the working surface thereof substantially parallel to the punch to engage with the article to be stripped.

Abstract: A progressive fin die having means for preventing metal particle buildup around the punch with the means stripping the workpiece from the punch. A plurality of draw punches are arranged with decreasing diameters in a row. A ram is movable to and from the draw punches and includes a plurality of draw bushings. Movement of the ram toward the draw punches results in the punches forming bonnets in the workpiece positioned between the punches and bushings. Spring biased stripper rods extend through the bushings and are operable to force the workpiece from the bushings. A compound pierce and straightening station includes a hollow pierce bushing mounted to the frame for receiving a pierce punch movable to and from the frame by a ram. A straightening bushing encircles the pierce punch and is externally engageable with the bonnet formed by the draw punches. A stripper bushing is slidably mounted to the pierce punch and is disposed between the straightening bushing and the pierce punch.

Abstract: An inner ring supports a plurality of stripper segments in nonabutting relationship, bosses on the outer surface of the ring both spacing the segments and retaining them in predetermined positions on the circumference of the ring. Each segment has a stripping edge formed by the intersection of a forward segment face and a radially inward segment face, the latter face having an arc of greater radius than the radius of the metal object being stripped. The outer surface of the ring has a chamfered forward edge and a recess at the rear edge to allow the segments to pivot easily when deflected.

Abstract: A die apparatus for press machine wherein compressed air may be introduced for blowing off surplus lubricant and particles deposited within a die.The apparatus comprising a die set having a piercing hole therein, a cylindrical plate having a hole therein disposed within said die set, a die disposed on said cylindrical plate within said die set, and a knockout slidably disposed within said cylindrical plate, said knockout having a plurality of grooves on the upper and lower parts thereof.

Abstract: A hydraulically actuated ejector mechanism is mounted on a press bed and includes a pair of opposed cams connected to the press slide for vertical displacement therewith. The cams actuate corresponding followers in the form of hydraulic pistons which operate together to hydraulically displace an ejector member during upward movement of the slide following a metalworking operation. The cam contours enable timing the ejector pin displacement with the press slide stroke so as to achieve optimum acceleration and deceleration of the stroke of the ejector pin.

Abstract: A unitary coining die assembly is provided which is mountable on the frame of an underdriven coining press independent of the press slide. The die assembly is positioned on the frame above the slide and is comprised of a mounting plate attached to the frame and a pair of support plates suspended therebeneath. An upper coining die is carried by the mounting plate, and a vertically displaceable lower coining die is carried by the lower support plate. A ring providing a die cavity cooperable with the coining dies is carried by the upper support plate. The support arrangement provides for the lower coining die to be pivotal laterally about an axis spaced from the die axis to facilitate access to the component parts. Further, the portion of the upper support plate is pivotal about the same axis to provide access to the die cavity ring and upper coining die.

Abstract: An apparatus for producing annular metallic blanks for metallic rings having a desired inner diameter wherein a length of elongated metallic material having a predetermined cross-sectional configuration is formed into a spiral shape having an inner diameter smaller than the desired diameter of the ring and such formed material is forcibly and coaxially disposed around a cylindrical portion of a holding means having a diameter larger than the inner diameter of the ring. Thereafter, the spiral formed material around the cylindrical portion is cut along a straight line parallel to the axis of the cylindrical portion to provide a plurality of metallic bends, and the bends are removed from the cylindrical portion to be used as annular metallic blanks for the metallic rings. In order to obtain a desired ring from the annular blank formed as described above, the ends of the annular blank are later joined together by welding such as by a butt welding operation.

Abstract: An axially movable ejector rod has one end abutting against one arm of a pivoted ejector lever. A second arm on the ejector lever has a generally radially extending plane surface that is contacted by a roller carried at the end of a lever arm pivoted on a supporting slide. The roller also rides on a second plane surface on one arm of an intermediate lever, the other arm of which is connected to a link. This link is reciprocated by a rotating cam, causing the intermediate lever to rock and pressing its plane surface against the roller. The roller, in turn, presses against the arm of the ejector lever and causes the latter to rock. As the intermediate lever and ejector lever rock on their respective pivots, the roller rolls along the respective plane surfaces. The supporting slide carrying the lever arm with its roller is movable in the direction to shift the roller along the two plane surfaces.

Abstract: Apparatus for stripping articles from a press ram including a plurality of individual strippers supported in ring members surrounding the press ram. Each of the strippers is formed as a rigid member having an operating piston and a stripping piston rigidly joined together by a web section with the pistons extending parallel to and laterally spaced from one another. The operating pistons of the respective strippers are rotatably supported in bores provided in a first support ring and the operating pistons are guidably supported in radial slots at a second support ring. The two rings are rotatably moved with respect to one another by way of a piston-cylinder unit, with relative rotation of the rings effecting a forced rotation of the strippers about the operating pistons into and out of respective stripping positions adjacent the press ram.

Abstract: An apparatus for forming pipe from sheet metal, comprises a preforming die having laterally spaced substantially parallel walls and an interior surface spaced inwardly from an edge of the wall and located between the walls in which are mounted a pair of transversely spaced curved segments shaped to receive the outside surface of the sheet when it is formed into a pipe. Piston and cylinder combinations carry each segment so that they may be moved outwardly or inwardly for regulating the degree of bending of the sheet therebetween. A drawing punch includes a curved forming punch surface with a holding down element at each end which are constructed so as to be movable into and out of the space between the parallel walls. The apparatus also includes a finishing tool which comprises a receiving die shaped to the outer diameter of the pipe to be formed.

Abstract: A method and apparatus are provided for blanking from coil stock blanks to be supplied to and formed by a transfer press having a transfer feed line through the transfer press along which the blanks are fed. The coil stock is fed along a coil stock feed line which is below the transfer feed line of the transfer press over a male blanking punch. A female blanking die is lowered from above the transfer feed line of the press over the male blanking punch for blanking blanks from the coil stock. The blanks so formed are elevated from the male blanking punch to the transfer feed line of the press for transfer thereof along the transfer feed line. The scrap of the coil stock resulting from such blanking operation is discharged along the coil stock feed line below the transfer feed line of the press so as not to interfere with the transfer of the blanks along the transfer feed line of the press.