Abstract: An injection head (1) for making hardening foams is disclosed, including a housing in which are housed an inflow and mixing body (5) equipped with a central supply duct connected to an injection nozzle (6) and a plurality of supply ducts (5a) of fluid components to be mixed converging on said central supply duct, and a shutter stem (3, 30) mounted sliding longitudinally at least partially in said central supply duct and injection nozzle (6) according to an alternating forward and backward movement which respectively closes and opens inflow ports of said supply ducts (5a) in said central supply duct, further including a guiding cage (7) arranged around said plug stem (3, 30) arranged to guide said shutter stem (3, 30) according to a rotation on its longitudinal axial upon said longitudinal sliding.

Abstract: A containment jig (A) is disclosed of a holding apparatus for household appliance cabinets in a foaming system and its related locking mechanism, which includes holding walls (1, 2, 4), provided with a base edge and a free edge, apt to withhold a pressure force, basements (B1, B2), mutually approachable between a spaced relative position and a close relative position, which the base edges of said holding walls (1, 2, 4) are attached to locking means to constrain said free edges of said holding walls (1, 2, 4) to an opposite one of said basements (B1, B2) when they are in said close relative position, said locking means including, on one hand, one or more locking prongs (5, 6) and, on the other hand, corresponding matching seats, at least one of said locking prongs and said matching seats being mounted adjustable in position by a control.

Abstract: A foaming method and apparatus for products comprising a frame (T) on which a first containment jig mould (1) is supported, at least one foaming unit, and a loading trolley (20) provided with a controlled conveyor (21) for transferring said components from an inlet line (Li) inside said containment jig (1), wherein it includes at least a second containment jig (10) arranged above said first containment jig (1) constrained to the same fixed frame (T), a removal trolley (30) arranged on the side opposite said loading trolley (20) with respect to said containment jigs (1, 10), between said containment jigs (1, 10) and an outlet line (Lu), wherein said loading trolley (20) and removal trolley (30) are vertically movable, by means of respective controlled lifts (22, 32), between a lower position and one or more service positions in which they are arranged adjacent to said jigs (1, 10).

Abstract: A foaming method and apparatus for products comprising a frame (T) on which a first containment jig mould (1) is supported, at least one foaming unit, and a loading trolley (20) provided with a controlled conveyor (21) for transferring said components from an inlet line (Li) inside said containment jig (1), wherein it includes at least a second containment jig (10) arranged above said first containment jig (1) constrained to the same fixed frame (T), a removal trolley (30) arranged on the side opposite said loading trolley (20) with respect to said containment jigs (1, 10), between said containment jigs (1, 10) and an outlet line (Lu), wherein said loading trolley (20) and removal trolley (30) are vertically movable, by means of respective controlled lifts (22, 32), between a lower position and one or more service positions in which they are arranged adjacent to said jigs (1, 10).

Abstract: A machine for bending sheet metal provides at least one sheet metal resting tool, at least one sheet metal pressing tool, and at least one sheet metal bending tool, parallel to one another; for moving the tools along a first and a second axis perpendicular to one another at least two electric motors are provided for moving the sheet metal pressing tool along the second axis, at least two electric motors for moving the sheet metal bending tool along the first axis and at least two electric motors for moving the sheet metal bending tool along the second axis; a command and control unit connected to the electric motors commands and controls the driving of the electric motors to maintain the parallelism between the tools in the operating step. In this manner, using hydraulic drives is avoided.

Abstract: A machine for bending sheet metal provides at least one sheet metal resting tool, at least one sheet metal pressing tool, and at least one sheet metal bending tool, parallel to one another; for moving the tools along a first and a second axis perpendicular to one another at least two electric motors are provided for moving the sheet metal pressing tool along the second axis, at least two electric motors for moving the sheet metal bending tool along the first axis and at least two electric motors for moving the sheet metal bending tool along the second axis; a command and control unit connected to the electric motors commands and controls the driving of the electric motors to maintain the parallelism between the tools in the operating step. In this manner, using hydraulic drives is avoided.

Abstract: An adjustable clamping table for a molding station of a thermoforming machine. The clamping table includes a stationary base plate defining a rectangular opening of a window having crosswise and longitudinally extending sides; a pair of upper and a pair of lower movable plates sliding supported by the stationary plate, at right-angled directions; to each clamping bars along internal edges of the sliding plates, the sliding plates having longitudinal edges defining an upper resting surface for supporting and locking a sheet of thermoformable plastic material, a resting and sealing bottom surface for a thermoforming mold. The clamping bars of lower cross plates being telescopically adjustable and supported by respective metal sheets which extend from the internal edge of the same cross plates.

Abstract: The pre-stretching device for a thermoforming station comprises a bell shaped member having upper and side walls, defining a bottom open space; an internal partition wall divides the internal space of the bell into a first and a second vacuum chambers for pre-stretching separate balls members from a single plastic sheet; the vacuum chambers are selectively connectable to respective vacuum sources and/or to pressurised air sources.

Abstract: A quick die change device for use in foaming of insulation for refrigerator cabinets comprising a bottom die suitable for working together with an upper die plate bearing a plurality of dies for obtaining the insulation. The size of the insulation changes as the dimensions of the refrigerator cabinets change. The dies are placed in such a way as to work together with the bottom die by rotating the die plate around a minor axis. The rotation is obtained by a gear motor, a number of belts and a shaft coinciding with the minor axis of the plate.

Abstract: A device for operating pumps in an installation for the foaming of polyurethan comprising two vertical tanks each containing a component for obtaining polyurethan, a pump provided on the lower part of each tank to pump the material from said tank towards a mold for foaming, a shaft passing vertically through each tank, a pump connected to one end of said shaft, a plate for covering the tops of said tanks, the other end of said shaft passing through said plate, and means attached to said other end of each of said shaft and connected one to the other by which said pumps are driven.