摘要:
An apparatus comprises an extruding device having a dispensing opening for extruding a flowable material along an exit direction through the dispensing opening, and a cutting arrangement for separating a dose from the flowable material, the cutting arrangement being movable with a motion component that is parallel to the exit direction.
摘要:
A device for transferring objects, in particular parisons (3) or bottles (2), has a carousel (10) able to rotate about a predetermined axis (X), an object (2, 3) pick up element (14), a supporting arm (16) for the pick up element (14) connected to the carousel (10), the pick up element (14) having at least three degrees of freedom relative to the carousel (10), a cam (12) for guiding the arm (16) and the pick up element (14), having a predetermined number of tracks (22, 23, 24), for moving the pick up element (14) along a predetermined path (P); the cam (12) has a fixed portion (25) and at least one removable portion (26) connected to the fixed portion (25), the removable portion (26) having a predetermined profile and there being the possibility of substituting it with other removable portions having a different profile to the portion (26).
摘要:
A closing arrangement includes a neck having an end closed by a wall and an associated cap. The end of the neck is provided with a weakening line that surrounds the neck. The cap is provided with an opening promoting device arranged for engaging with a further opening promoting device of the wall to separate at least a part of the wall of the neck along the weakening line.
摘要:
A closing arrangement includes a neck having an end closed by a wall and an associated cap. The end of the neck is provided with a weakening line that surrounds the neck. The cap is provided with an opening promoting device arranged for engaging with a further opening promoting device of the wall to separate at least a part of the wall of the neck along the weakening line.
摘要:
A plant for blow-moulding plastic containers (2) from respective parisons (3) is equipped with a plurality of interchangeable moulding units (15), each having a predetermined number of moulding cavities (19) for blow-moulding respective containers (2); with a wheel (39) for feeding the parisons (3) to the respective moulding cavities (19); with a wheel (76) for picking up the containers (2) from the respective moulding cavities (19); and with two lines (41, 79) for feeding the parisons (3) to the first transfer wheel (39); and the containers (2) from the pick-up wheel (76) to a filling machine (10), respectively; the feed speeds of the two feed lines (41, 79) vary according to the number of moulding cavities (19) in the moulding units (15) mounted on the plant at a given time.
摘要:
The preform is formed by an upper neck which maintains unchanged its form in the final object and a hollow body, joined to the neck. The method foresees the insertion, within a matrix cavity, of a metered body of polymeric material whose mass is metered according to a reference value, and the subsequent pressure insertion of a punch within the matrix cavity until it closes the mold's molding chamber, the punch conferring the shape to the inner surface of the preform and the matrix having an inner surface which confers the shape to the outer surface of the preform. According to the invention, in the molding of the preform, the error of the mass of the metered body with respect to the reference value is distributed in the hollow body, which undergoes a subsequent hot deformation until it achieves the final shape. In the mold, the matrix comprises at least one deformable wall (31) whose inner surface defines at least part of the inner surface of the matrix part intended to give form to the hollow body of the preform, said deformable wall (31) having, at least in part, a relatively thin thickness which permits it to be elastically deformed under the pressure of the polymeric material in the final preform molding step, thereby varying the thickness of the hollow body.
摘要:
An apparatus comprises an extruding device (2) having a dispensing opening (8) for extruding a flowable material along an exit direction (Z1) through said dispensing opening (8), and cutting means (3) for separating a dose (50) from said flowable material, said cutting means (3) being movable with a motion component that is parallel to said exit direction (Z1).
摘要:
The plant comprises a plurality of shuttles (10) each carrying at least one die part (110), the shuttles being conveyed in a moulding apparatus (20) which is provided with a plurality of punches and a corresponding plurality of seats (21) for holding the shuttles (10), the seats arranged to receive and release the shuttles (10), the moulding apparatus comprising means for inserting the punches into the die cavities (11, 12) of the shuttle and means for withdrawing the punches to achieve a compression moulding cycle for the article. The shuttles (10) are independent of the moulding apparatus. Each shuttles (10)comprises at least one circuit (15) for at least one conditioning fluid for controlling the temperature of the article located in the die, the moulding apparatus (20) comprising at least one feed system (25) for at least one conditioning fluid to feed the conditioning fluid to the shuttles (10) inserted in the seats (21) of the moulding apparatus (20).
摘要:
A method for separating a portion of extruded material from the continuous strip leaving an extruder, consisting of passing in front of the extrusion nozzle a withdrawal device associated with at least one cutting member; said withdrawal device and said at least one cutting member are made to move independently of each other with velocities, in the sense of vectors, which differ from each other and differ in relation to the material portion separated.
摘要:
An apparatus comprising a forming arrangement that is movable along a path for compression moulding of doses of plastics, a transferring device for transferring the doses to the forming arrangement, a liquid cooling arrangement for cooling the transferring device, an arm arrangement associated with the transferring device for moving the transferring device along a further path having a portion substantially coinciding with a further portion of said path.