Abstract: The edging or tapering equipment requires that each of the two shaped pads, for the plastic deformation of the two edges of a respective can body, be positioned so that the longitudinal axis of the pads lies at an angle to the longitudinal axis of the can body located in an operating position zone, and that the pads be set at opposite angles to one another; each of these shaped pads also moves independently, rotating and traversing around and along their respective longitudinal axis and simultaneously traversing along a determined longitudinal axis so as to obtain, at an operating contact position, induced rotation of the can body in a direction concording with the rotation of the shaped pads and designed to allow contact between each operating head and the respective edge in a zone for the definition of the profile of said edge, a profile which is created gradually, by simultaneous linear traversing and rotation of the shaped pads along the axis.

Abstract: A manufacturing machine operating at high speed and using a feed system with suction cups can be fitted with an air delivery system in which the single suction cup is mounted directly to a three-way valve affording a first passage open to the cup, a second passage coupled to a vacuum pump and a third passage connected to a source of compressed air; the second and third passages can be connected in alternation to the first passage, in such a manner that the cup will release swiftly and positively as suction generated by the vacuum pump is neutralized by the rush of air.

Abstract: The device comprises a flat block with a pair of rods carrying two respective teeth, reciprocated as one in the direction followed by cans conveyed from a forming station to the welding station by a pair of chain loops driven at constant operating speed; from a fully retracted position, in which the rods engage the rolled shell of the can essentially at standstill, or in any event at minimal velocity, the block accelerates to an intermediate position at which its velocity reaches a calculated maximum and is matched substantially to that of the chains, whereupon the can is taken up by the chains and the block decelerates in the same direction toward a fully extended position before reversing.

Abstract: The cylindrical bottom end of the magazine is embodied in two distinct sections, upper and lower, which remain united during operation; the upper section is rigidly associated with the main body of the magazine, whilst the lower section is anchored permanently on one side to the frame of the machine by way of a sliding and hinged bracket that can be retracted sideways from a first limit position, in which the two sections are stably and coaxially aligned, to a second limit position in which the lower section is distanced from the upper section to a point where it can be rotated clear.

Abstract: An electronic device for controlling and monitoring the electric power supply to welding equipment includes an inverter driven by a rectifier that supplies voltage to the primary winding of a welding transformer. A secondary winding of the welding transformer delivers welding current that is a function of the voltage applied to the primary winding. The inverter is also interlocked to and piloted by a regulator in such a way that an essentially square wave voltage signal appears with a succession of paired pulses in each half-period of the fundamental frequency, alternately positive and negative and of a given absolute crest value and finite spacing. A periodic welding current is produced of which the pulses are triangular, all positive or negative within the same half-period, and geared to rise and fall once during each cycle of two paired alternating voltage pulses, such that fundamental frequencies can be reduced without loss of operating speed.

Abstract: A carousel type head revolving about a vertical axis and skirted by a fixed reaction sector is equipped with work stations, each comprising a system of brackets to support the cylindrical tin can and a mandrel consisting in a shaft with an interchangeable outer barrel of diameter notably less than the internal diameter of the can, by which the revolving metal body is pinned against the fixed sector to bring about its deformation; the mandrel and brackets of each station rise and fall synchronously in mutual opposition between respective limit positions, each traversing through a vertical distance substantially equal to half the height of the production can.

Abstract: A translation device for can bodies consisting in a supporting group, on one end, a pushing element of the same and jointed on the opposite end, to a supporting structure and connected, in of its intermediate points, to crank movement mechanisms which allow the group itself to make a pendular trajectory which is alternatively positive and negative according to the advancement of the can bodies, between two opposite positions, one being the operative pick-up position of the can bodies and the other being the dropping-off of the same; a drive cam element is foreseen to act on the pushing element in such a way as to permit the same pushing element to carry out a rectilinear trajectory of can body engaging interference when it crosses the positive trajectory, and of non-interference when the pushing element crosses the negative trajectory.

Abstract: Tin cans are pre-calibrated prior to entering between the electrode rollers of an automatic seam welder, by a device installed immediately upline of the final calibration and weld station; such a device comprises one or more sets of rollers, each set aligned transversely so as to describe an internal circumference encompassing the can, and at least one such set comprises cylindrical rollers occupying positions that are fixed radially in relation to the cans passing through.

Abstract: The invention disclosed provides an effective and comprehensively economic method of cooling the continuous shielding wire fed to the welding rollers of a machine for seam-welding discrete lengths of tube, inasmuch as the wire does not merely pass between the cooled mill rolls but is wrapped around each one to the point of subtending an angle greater than 180.degree..

Abstract: A device having a pusher that extends in a direction crosswise to a displacement path of parts undergoing machining, and at least one articulated parallelogram that supports the pusher. The articulated parallelogram is envisaged extending in planes parallel to the path of the parts undergoing machining, and having a fixed side directed transversely to the path.

Abstract: A control device having a single static converter incorporating a rectifier and stabilizer block and a transistorized inversion block, the output signal of which is controlled by an amplitude and frequency regulator in response to a feedback signal taken off the primary or the secondary winding of the welding transformer. The device features an additional rectifier block located between the output from the secondary winding and the input to the welding rollers.

Abstract: The invention relates to the art field of resistance welding utilizing rollers in conjunction with a continuous copper wire electrode and effected with welding current that remains constant on average, at least within each half-period. According to the invention, the weld between members (generally tinned metal strip) can be monitored by measuring the current that flows through the circuit created by the electrode wire, this being a function of the welding resistance that registers between the welding rollers; the value of the current thus measured is compensated in respect of the inductive effects produced by the magnetic field originating from the welding current, and relayed in digital form to a microprocessor that compares it with given maximum and minimum limits within which the reading must fall for quality of the weld to be assured.

Abstract: The device comprises several sets of shaped rollers disposed on parallel circumferences. The rollers of one of said sets are gauged and innerly define a circumference the diameter of which is equal to that of the cylindrical box-shaped elements to be shaped. In order to ensure a perfect welding of the cylindrical box-shaped elements, some of the gauged rollers are powered at a constant speed. These powered gauged rollers mesh with each other by means of their respective toothing and only one of them is powered by a powered toothed belt which moves the welded box-shaped elements away from the shaping device.

Abstract: Described herein is an invention that belongs to the technical field of machines for effecting lap welding operations and relates, in particular, to a device for positioning the metal ends of strips destined, once the said ends are joined one to the other, to constitute can bodies.Envisaged by the invention is a device in which the slots for housing the ends to be welded are defined by at least one pair of guide blocks that are substantially opposed and are shaped in the form of a step in such a way that each constitutes means of abutment for one of the said ends and supporting surfaces for both of the said ends. Advantageously, at least one block in the said at least one pair of blocks can be set with respect to the other.

Abstract: Disclosed herein is a device for automatically forming piles out of strips exiting from a machine on which the said strips are produced, comprising at the top, a pair of parallel rods placed downstream with respect to the said cutting device, and supported at their ends by corresponding brackets connected to the base frame, the said rods being provided centrally with a support member for sustaining the packs of strips in a horizontal position and able to rotate, in opposite directions, in order to release the pack of strips which, once freed, falls, suitably guided, on to a collection pallet placed on a driven conveyor, located downstream of the machine, which continues to operate until a number of vertical piles of strips have been formed on the pallet, after which the pallet is sent towards a discharge station.