Abstract: Plant for the electrochemical formation of lead-acid batteries, which comprises an external circuit (5) in which an electrolytic solution flows with controlled temperature; such solution traverses the single cells (2) provided with metering caps (17) provided with an inlet duct (18) connected with a first connector to a distribution manifold (9) of the circuit and with an outlet duct connected with a second connector to return means (7) of the circuit. The plant also comprises suction means connected to the distribution manifold (9) and actuatable to suck, with the feeding to the distribution manifold (9) interrupted, the electrolytic solution contained in the distribution manifold (9) as well as possible lumps therewith that have stopped in the inlet ducts and/or in the first connectors for feeding the cells (2).

Abstract: A machine for deforming the wires of grids for making electric accumulators, which comprises two lower molds, and two upper molds which are positioned above the lower molds and which are operable to shift between a raised position, in which they are separated from the underlying lower molds, and a lowered position in which they are pressed against the lower molds to deform the wires of the grids on a grid strip. The upper molds comprise respective projecting molding areas and respective seats which are positioned between the molding areas of the relative upper mold, and each housing a corresponding piece-detacher element which, when the upper molds are in the raised position, is suitable to interfere with the grid remaining attached to the corresponding upper mold to separate the grid from such upper mold.

Abstract: Grid forming machine for making plates of electric storage cells, which comprises two pressing towers operatively active in succession on a continuous lead band that advances with a substantially constant speed, and each equipped with a framework slidably mounted along the direction of forward movement of the band on the support structure of the machine; with a linear actuator mounted on the framework of the tower and supporting a relative press; and with a matrix fixed to the framework under the linear actuator. The two presses of the two pressing towers are moved cyclically and alternatingly by the linear actuators to move between a raised position and a lowered position, in which they cut the band forming it in the shape of a continuous grid.

Abstract: A machine for deforming the wires of grids for making electric accumulators, which comprises two lower moulds, and two upper moulds which are positioned above the lower moulds and which are operable to shift between a raised position, in which they are separated from the underlying lower moulds, and a lowered position in which they are pressed against the lower moulds to deform the wires of the grids on a grid strip. The upper moulds comprise respective projecting moulding areas and respective seats which are positioned between the moulding areas of the relative upper mould, and each housing a corresponding piece-detacher element which, when the upper moulds are in the raised position, is suitable to interfere with the grid remaining attached to the corresponding upper mould to separate the grid from such upper mould.

Abstract: Plant for forming grids for electric battery plates, which comprises a grid forming machine with continuous casting provided with a rotary drum, and a sliding block mounted fixed and slideably sealingly coupled with the external surface of the rotary drum and provided with means for distributing molten lead, in order to insert the molten lead within grooves provided on the external peripheral surface of the rotary drum during the rotation of the latter. The plant is also provided with an ultrasound generator placed to intercept a feed duct for the molten lead, connected to the distribution means and provided with at least one tip immersed in the pressurized flow of molten lead that moves through the aforesaid feed duct in order to transmit the waves produced by the ultrasound generator to the molten lead flow.

Abstract: Plant for forming grids for electric battery plates, which comprises a grid forming machine with continuous casting provided with a rotary drum, and a sliding block mounted fixed and slideably sealingly coupled with the external surface of the rotary drum and provided with means for distributing molten lead, in order to insert the molten lead within grooves provided on the external peripheral surface of the rotary drum during the rotation of the latter. The plant is also provided with an ultrasound generator placed to intercept a feed duct for the molten lead, connected to the distribution means and provided with at least one tip immersed in the pressurized flow of molten lead that moves through the aforesaid feed duct in order to transmit the waves produced by the ultrasound generator to the molten lead flow.

Abstract: Plant for the electrochemical formation of lead-acid batteries, which comprises an external circuit (5) in which an electrolytic solution flows with controlled temperature; such solution traverses the single cells (2) provided with metering caps (17) provided with an inlet duct (18) connected with a first connector to a distribution manifold (9) of the circuit and with an outlet duct connected with a second connector to return means (7) of the circuit. The plant also comprises suction means connected to the distribution manifold (9) and actuatable to suck, with the feeding to the distribution manifold (9) interrupted, the electrolytic solution contained in the distribution manifold (9) as well as possible lumps therewith that have stopped in the inlet ducts and/or in the first connectors for feeding the cells (2).

Abstract: Improved plant for the electrochemical formation of lead-acid batteries, which comprises a circuit for circulating the electrolytic solution for the purpose of controlling its temperature and electrolytic concentration, provided with supply means for conveying into the cells via a first distribution header a first flow of electrolytic solution at a constant piezometric pressure and return means for removing under a vacuum by means of a suction header the first flow of electrolytic solution from the cells. A cap, which comprises an inlet pipe connected via a first connecting line to the first distribution header and an outlet pipe, is removably mounted in a sealed manner on each cell. Each cap also comprises at least one ventilation pipe which connects the internal environment of the cell, present underneath the lid, to the external environment which is at atmospheric pressure, so as to dilute the formation of inflammable gases inside said cell.

Abstract: Grid forming machine for making plates of electric storage cells, which comprises two pressing towers operatively active in succession on a continuous lead band that advances with a substantially constant speed, and each equipped with a framework slidably mounted along the direction of forward movement of the band on the support structure of the machine; with a linear actuator mounted on the framework of the tower and supporting a relative press; and with, a matrix fixed to the framework under the linear actuator. The two presses of the two pressing towers are moved cyclically and alternatingly by the linear actuators to move between a raised position and a lowered position, in which they cut the band forming it in the shape of a continuous grid.

Abstract: Continuous casting machine for forming a lead alloy strip of large thickness; which comprises a cooled rotating drum (4) having an annular seat (8) formed on the periphery thereof and a vat (10) for containing a molten lead bath, which is sealingly engaged on the peripheral surface (7) of the rotating drum (4). The machine (1) also comprises a fixed shoe (11) extending, from the vat (10), along an arc (25) around the rotating drum (4) and having an arc shape suitable for sealing engagement, in a sliding relationship, on the shoulders (90) of the annular seat (8). Heating means (26) are provided, these consisting of a plurality of torches acting on the shoe (11) along at least an initial section thereof (25) which extends from the vat (10), for heating to a temperature higher than the melting temperature of the lead alloy the free surface of the lead inside the annular seat (8).

Abstract: Apparatus for recovering pieces of paste made of active matter for plates of lead accumulators, which comprises a first conveyor belt, having a first horizontal section for receiving the pieces from a spreading machine and a first vertical section, and a second conveyor belt, having a second horizontal section for transferring the pieces to the hopper of the spreading machine and a second substantially vertical section. The vertical sections are arranged counterfaced to each other to hold and transport the pieces interposed therebetween. A third conveyor belt is suitable to receive the pieces from the second horizontal section and transfer them to the hopper. The two conveyor belts are wound on two return rollers in common delimiting the vertical sections, at least one of which is provided with an annular cavity, within which the conveyor belt can extend to house the lead pieces with the other belt superimposed.

Abstract: Apparatus for recovering pieces of paste made of active matter for plates of lead accumulators, which comprises:—a first conveyor belt wound in a loop on rollers, equipped with a first horizontal section, adapted to receive the pieces from a spreading machine, and with a first vertical section arranged to continue the first horizontal section;—a second conveyor belt wound in a loop on rollers, equipped with a second horizontal section, adapted to transfer the pieces to the hopper of the spreading machine and with a second substantially vertical section arranged to continue the second horizontal section. The two vertical sections of the two conveyor belts are arranged one on the other counterfaced to each other, parallel to hold and transport the pieces interposed therebetween and coming from the first horizontal section of the first conveyor belt and are transferred to the second horizontal section of the second conveyor belt.

Abstract: Continuous casting machine for forming a lead alloy strip of large thickness; which comprises a cooled rotating drum (4) having an annular seat (8) formed on the periphery thereof and a vat (10) for containing a molten lead bath, which is sealingly engaged on the peripheral surface (7) of the rotating drum (4). The machine (1) also comprises a fixed shoe (11) extending, from the vat (10), along an arc (25) around the rotating drum (4) and having an arc shape suitable for sealing engagement, in a sliding relationship, on the shoulders (90) of the annular seat (8). Heating means (26) are provided, these consisting of a plurality of torches acting on the shoe (11) along at least an initial section thereof (25) which extends from the vat (10), for heating to a temperature higher than the melting temperature of the lead alloy the free surface of the lead inside the annular seat (8).

Abstract: Improved plant for the electrochemical formation of lead-acid batteries, which comprises a circuit for circulating the electrolytic solution for the purpose of controlling its temperature and electrolytic concentration, provided with supply means for conveying into the cells via a first distribution header a first flow of electrolytic solution at a constant piezometric pressure and return means for removing under a vacuum by means of a suction header the first flow of electrolytic solution from the cells. A cap, which comprises an inlet pipe connected via a first connecting line to the first distribution header and an outlet pipe, is removably mounted in a sealed manner on each cell. Each cap also comprises at least one ventilation pipe which connects the internal environment of the cell, present underneath the lid, to the external environment which is at atmospheric pressure, so as to dilute the formation of inflammable gases inside said cell.

Abstract: An apparatus for forming continuous metal grids, in particular producing grids for batteries, comprises a supporting structure, at least one punching roller and at least one matrix roller mounted on the supporting structure. The punching roller and the matrix roller respectively have a first and a second outer surface. The punching roller comprises a plurality of first teeth positioned radially relative to the first outer surface and each cyclically mobile, with each punching roller rotation, between an operating position in which it projects from the first outer surface and a non-operating position in which it does not project from the first outer surface. The matrix roller comprises a plurality of second teeth positioned radially relative to the second outer surface and each cyclically mobile, with each matrix roller rotation, between a passive position in which it is retracted relative to the second outer surface and an active position in which it is not retracted relative to the second outer surface.

Abstract: Forming machine for metal strips, in particular for the manufacture of plates for electric accumulators, comprising moving means (2, 3) designed to convey a continuous strip (10) through an incision zone (8) associated with forming means (7) provided with a plurality of teeth (9) operationally actuated by actuator means (11) so as to make incisions in the strip (10) so as to form a continuous mesh (12). The actuator means (11) move the forming means (7) in accordance with a law of motion having a component oriented in the direction of feeding (A) of the strip (10) and a component oriented in a direction (B) substantially perpendicular to the direction of feeding (A) of the strip (10). The first component allows the teeth (9) to advance substantially in synchronism with the strip (10), while the second component allows the teeth (9) to make incisions in and expand the strip (10) during an incision step of the machine (1). For this purpose, the strip is fed continuously by the moving means (2, 3).

Abstract: A machine for positioning and leveling plates for electric accumulators, is operationally arranged downstream of a machine for separating lead grids (2), initially formed by a continuous strip (5), into pairs of plates (11). The machine in question is substantially provided with an upstream section (16), a central section (20) and a downstream section (17) associated respectively with first (18), second (21) and third (22) conveying devices. The first conveying device (18) removes the plates (11) from the separating machine (2) and transfers them, through a compression station (19) to level the plates (11), to the central section (20).

Abstract: A spreading machine has a first conveyor belt, with a high friction rest surface for carrying a grid to be covered with paste; a paste spreading chamber towards which the first conveyor belt advances, where paste is spread on an upper and a lower face of the grid; apparatus for spreading paste on the grid at the spreading chamber; a paste loading hopper which feeds the spreading chamber; a second conveyor belt moving away from the spreading chamber, having an uncompressible rest surface; a calibrator for regulating breadth of paste spread on one face of the grid; a paste recycling chamber communicating with the spreading chamber and the loading hopper to remove excess paste from the spreading chamber; and a paste pressure regulator inside the spreading chamber.