An accumulation extruder head comprises a head body (10) which has an accumulation chamber (13a) with a vertical axis, designed to be filled with a load of thermoplastic resin, and a bottom outlet mouth (11) for expulsion of the load of thermoplastic resin in the form of a tubular parison. A piston (18) is coaxially inserted inside the accumulation chamber (13a) and is movable in a reciprocating manner inside the accumulation chamber along the vertical axis in an expulsion direction and an upward direction.
An accumulation extruder head comprises a head body (10) which has an accumulation chamber (13a) with a vertical axis, designed to be filled with a load of thermoplastic resin, and a bottom outlet mouth (11) for expulsion of the load of thermoplastic resin in the form of a tubular parison. A piston (18) is coaxially inserted inside the accumulation chamber (13a) and is movable in a reciprocating manner inside the accumulation chamber along the vertical axis in an expulsion direction and an upward direction.
A mechatronic assembly (30) comprises an output element (31), which is linearly displaceable along the vertical axis between a raised position and a lowered position, and a plurality of electric actuators, each able to rotationally drive a respective rotating element coupled to the output element (31) so as to displace the output element in the vertical direction. The output element (31) cooperates with a pusher assembly (40), which is rigidly coupled to the piston (18) for displacement therewith so as to push the piston (18) in the expulsion direction.
Amendments to the abstract were made herewith to correct minor informalities with the parent application. A clean copy of the abstract is included herewith on a clean sheet. Even in light of the amendments no new matter is being added and all amendments are fully supported by the specification as filed.
A die group with a forming head for forming a tubular parison made of plastic material with a female die, which defines an internal through-cavity with a vertical die axis, a female die holder element, rigidly connected to the female die, and a housing body which defines a vertical reference axis for coupling with a distribution duct of the forming head and supports the female die holder element allowing relative movement thereof in a longitudinal/transverse plane. A first electric driving actuator is supported on the housing body and rotationally drives a first output element coupled with the female die holder element by means of a first transmission mechanism so as to move the female die holder element in the longitudinal/transverse plane with respect to the housing body, in accordance with a first isometric transformation.
An accumulation extruder head comprises a head body (10) which has an accumulation chamber (13a) with a vertical axis, designed to be filled with a load of thermoplastic resin, and a bottom outlet mouth (11) for expulsion of the load of thermoplastic resin in the form of a tubular parison. A piston (18) is coaxially inserted inside the accumulation chamber (13a) and is movable in a reciprocating manner inside the accumulation chamber along the vertical axis in an expulsion direction and an upward direction. A mechatronic assembly (30) comprises an output element (31), which is linearly displaceable along the vertical axis between a raised position and a lowered position, and a plurality of electric actuators, each able to rotationally drive a respective rotating element coupled to the output element (31) so as to displace the output element in the vertical direction. The output element (31) cooperates with a pusher assembly (40), which is rigidly coupled to the piston (18) for displacement therewith so as to push the piston (18) in the expulsion direction.
An accumulation extruder head (1) for a container blow-moulding machine comprises an internal accumulation chamber (13a) with a central vertical axis (z), which is filled with a thermoplastic resin load which is expelled in the form of a tubular parison through a bottom outlet mouth (11) by means of a piston (18), coaxially inserted inside the accumulation chamber (13a) and movable in a reciprocating manner inside the accumulation chamber along the central vertical axis (z) in an expulsion direction, from a raised position into a lowered expulsion position, and, in an upward direction, from the expulsion position into a raised position. The head also comprises a mechatronic assembly (30) comprising an output element (31), displaceable in a linear manner along the central vertical axis (z) between a raised position and a lowered position and operated by a plurality of electric actuators controlled by a control unit. The output element (31) is rigidly connected to the piston for translation therewith and, during a step for filling the accumulation chamber, the output element (31) is raised so as to move the piston (18) in the upward direction so that the volume of the accumulation chamber increases in proportion to the volume of thermoplastic resin entering into the accumulation chamber.
B29C 49/42 - Éléments constitutifs, détails ou accessoiresOpérations auxiliaires
B29C 48/00 - Moulage par extrusion, c.-à-d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désiréeAppareils à cet effet
B29C 48/25 - Éléments constitutifs, détails ou accessoiresOpérations auxiliaires
B29C 48/475 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans la filière ou la matrice utilisant des pistons, des accumulateurs ou des pilons
A forming group for forming a plurality of tubular parisons made of plastic material for a blow-moulding machine comprises a fixed support (230), a first forming head (10A) and a second forming head (10B), arranged alongside each other in a longitudinal direction (X-X), and a source for supplying the plastic material. Each forming head (10A,10B) is configured to dispense a tubular parison (1,2) of plastic material along a respective vertical dispensing axis through a bottom dispensing mouth. A movement assembly is configured to perform the relative movement of the forming heads (10A,10B) displaceably in the longitudinal direction (X-X) so as to vary the interaxial distance between the dispensing axes of the forming heads. Connection means connect the plastic material supply source (310a) to a respective inlet for entry of the plastic material to be dispensed into the forming head (10A,10B) and maintain the connection when there is a variation in the interaxial distance between the forming heads (10A,10B).
B29C 48/00 - Moulage par extrusion, c.-à-d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désiréeAppareils à cet effet
B29C 48/025 - Disposition ou conception générales des installations
B29C 48/09 - Objets dont la section transversale comporte des cavités partiellement ou entièrement fermées, p. ex. tuyaux ou canaux
B29C 48/25 - Éléments constitutifs, détails ou accessoiresOpérations auxiliaires
B29C 48/345 - Filières d’extrusion comprenant au moins deux orifices disposés de manière adjacente, pour extrusion simultanée de fils multiples, p. ex. pour faire des boulettes
A die group (1) for a forming head (10) for forming a tubular parison made of plastic material comprises a female die (20), which defines an internal through-cavity (20a) with a vertical die axis (z1), a female die holder element (25), rigidly connected to the female die (20), and a housing body (10) which defines a vertical reference axis (zr) for coupling with a distribution duct (52a) of the forming head and supports the female die holder element (25) allowing relative movement thereof in a longitudinal/transverse plane. A first electric driving actuator (30) is supported on the housing body (10) and rotationally drives a first output element (31) coupled with the female die holder element (25) by means of a first transmission mechanism so as to move the female die holder element (25) in the longitudinal/transverse plane with respect to the housing body (10), in accordance with a first isometric transformation. A second electric driving actuator (40) is supported on the housing body (10) and rotationally drives a second output element (31) coupled with the female die holder element (25) by means of a second transmission mechanism so as to move the female die holder element (25) in the longitudinal/transverse plane with respect to the housing body (10), in accordance with a second isometric transformation. The first and second electric actuators (30,40) allow adjustment of the position of the vertical die axis (z1) with respect to the vertical reference axis (zr) in the longitudinal/transverse plane.
An accumulation extruder head comprises a head body (10) which has an accumulation chamber (13a) with a vertical axis, designed to be filled with a load of thermoplastic resin, and a bottom outlet mouth (11) for expulsion of the load of thermoplastic resin in the form of a tubular parison. A piston (18) is coaxially inserted inside the accumulation chamber (13a) and is movable in a reciprocating manner inside the accumulation chamber along the vertical axis in an expulsion direction and an upward direction. A mechatronic assembly (30) comprises an output element (31), which is linearly displaceable along the vertical axis between a raised position and a lowered position, and a plurality of electric actuators, each able to rotationally drive a respective rotating element coupled to the output element (31) so as to displace the output element in the vertical direction. The output element (31) cooperates with a pusher assembly (40), which is rigidly coupled to the piston (18) for displacement therewith so as to push the piston (18) in the expulsion direction.
An accumulation extruder head comprises a head body (10) which has an accumulation chamber (13a) with a vertical axis, designed to be filled with a load of thermoplastic resin, and a bottom outlet mouth (11) for expulsion of the load of thermoplastic resin in the form of a tubular parison. A piston (18) is coaxially inserted inside the accumulation chamber (13a) and is movable in a reciprocating manner inside the accumulation chamber along the vertical axis in an expulsion direction and an upward direction. A mechatronic assembly (30) comprises an output element (31), which is linearly displaceable along the vertical axis between a raised position and a lowered position, and a plurality of electric actuators, each able to rotationally drive a respective rotating element coupled to the output element (31) so as to displace the output element in the vertical direction. The output element (31) cooperates with a pusher assembly (40), which is rigidly coupled to the piston (18) for displacement therewith so as to push the piston (18) in the expulsion direction.
Machine for forming containers made of thermoplastic material by blow-molding preforms obtained by means of injection/molding within the machine, for which at least one longitudinal direction for feeding of the preforms between the stations thereof is defined, said machine including: an injection unit provided with a longitudinal injector; a station for molding the preforms, comprising a mold with a predefined number of cavities for injection/molding of preforms; a station for blowing the preforms, comprising a blowing assembly for forming finished containers; said blowing assembly comprising a smaller number of blowing cavities than the number of injection/molding cavities in the mold and being displaceable in both senses of the longitudinal direction on fixed longitudinal guides.
Machine for forming containers (10b) made of thermoplastic material by blow-moulding preforms (10a) obtained by means of injection/moulding within the machine, for which at least one longitudinal direction (X-X) for feeding of the preforms (10a) between the stations thereof is defined,said machine comprising:- an injection unit (100) provided with a longitudinal injector (101);- a station (200) for moulding the preforms (10a), comprising a mould (203,206) with a predefined number of cavities for injection/moulding of preforms (10a);- a station (300) for blowing the preforms (10a), comprising a blowing assembly (310,320) for forming finished containers (10b);said blowing assembly (310,320) comprising a smaller number of blowing cavities (321c) than the number of injection/moulding cavities in the mould (203,206) and being displaceable in both senses of the longitudinal direction (X-X) on fixed longitudinal guides (301;1301).
b) movable, upon operation of an associated electric mould motor (400), in a longitudinal direction X-X, the unit formed by the mould (4) and by the associated mould operating motor (400) being displaceable, upon operation of an electric displacement motor (300), in a transverse direction (Y-Y) from a first position substantially aligned with the extrusion unit (2) into a second position substantially aligned with the blowing unit (5) and vice versa, comprising at least one base power supply/recovery module (2000) and at least one first control module (2300) connected to said displacement motor (400) for controlling the acceleration/deceleration thereof.
Machine for forming containers (3a), comprising a unit (2) for extruding tubes (3) made of plastic, associated with an electric extrusion motor (200), a blowing unit (5) associated with an electric blowing motor (500), a mould (4) for containing the containers (3a), formed by two half-moulds (4a, 4b) movable, upon operation of an associated electric mould motor (400), in a longitudinal direction X-X, the unit formed by the mould (4) and by the associated mould operating motor (400) being displaceable, upon operation of an electric displacement motor (300), in a transverse direction (Y-Y) from a first position substantially aligned with the extrusion unit (2) into a second position substantially aligned with the blowing unit (5) and vice versa, comprising an apparatus comprising at least one base power supply/recovery module (2000) and at least one first control module (2300) connected to said displacement motor (400) for controlling the acceleration/deceleration thereof during the displacement stroke and the recovery of energy during deceleration of each stroke.
A machine for molding containers, comprising a unit for extruding plastic tubes, a blow-molding unit, a mold for containing containers which is formed by two half-molds movable, upon operation of associated first actuator, in a longitudinal direction (X-X) and symmetrically with respect to a fixed axis (Z-Z) perpendicular to said longitudinal direction, the unit formed by the mold and by the associated first actuator being movable, upon operation of second actuator, in a transverse direction (Y-Y) from a first position where it is substantially aligned with the extrusion unit into a second position where it is substantially aligned with the blow-molding unit and vice versa, said first actuator for operating the half-molds in the longitudinal direction comprising at least one motor, the shaft of which has, keyed thereon, a cam for actuating a pair of connecting rods which are arranged in-line and are respectively connected to the first half-mold and to the second half-mold.
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