摘要:
An injection apparatus for injecting molten plastic into a mold of articles made of thermoplastic material including bottle preforms. The injection apparatus includes an injection nozzle and a shutter for controlling flow of the molten plastic through the injection nozzle. A cylinder-piston system moves the shutter from open and closed positions of the injection nozzle. The cylinder-piston system includes a first chamber with a first passage for introducing fluid into the first chamber to open the shutter, and a second passage, different from the first passage, for discharge of fluid and of possible particles from the first chamber. A fluid distribution device with a first channel is connected to the first passage, and a second channel different from the first channel is connected to the second passage. The cylinder-piston system includes a second chamber having a third passage for introducing fluid into the second chamber to close the shutter.
摘要:
A gripping head (1) comprises a supporting element (11), e.g. a horizontal plate, adapted to rotate about a first rotation axis (&alpha,-) with which two or more grippers (12) are pivotally associated, so that each gripper is adapted to rotate about a symmetry axis (β) thereof, said rotation axes being parallel to each other, and being the rotation motion of each gripper independent from the others. Therefore, each gripper is adapted to rotate about a symmetry axis (β) thereof and revolve about the rotation axis (α) of the supporting element with which they are pivotally associated. A preferred plant, comprising said gripping head (1), comprises a belt conveyor and a mechanical limb (2) with which said gripping head (1) is pivotally associated.
摘要:
A chuck for actuating plastic material containers, in particular performs, along a conveying line, includes a structure, fixable to a link of a conveying chain, a body, defining a longitudinal axis, inserted into a longitudinal through-hole of the structure and adapted to axially slide and/or rotate about the longitudinal axis, provided with gripping means at a first end for gripping a container neck. The structure is provided with locking elements for locking the body in a predetermined angular position, with the body being provided with at least one indication element of the predetermined angular position.
摘要:
A method for recycling energy and related blow molding machine—for blow molding plastic material containers including a recycling system for recycling the pneumatic energy of the discharge air coming from the blowing cavities of said machine, capable of recycling the discharge air making it available at a given pressure for a subsequent blowing in a cavity.
摘要:
A process and device for drying the coating of containers made of thermoplastic material. The process involves feeding said containers through a furnace divided into two areas: in the first, most of the solvent of the coating is removed by heating the paint with infrared lamps, while the temperature of the containers is controlled through an airflow; in the second, the remaining solvent is removed using said airflow coming from the first area of the furnace.
摘要:
A support apparatus (3) for supporting at least one neck mold (4) of a plastic container, the apparatus being adapted to be fastened to a lower surface of a rotating device (2) of an injection blow molding machine, said support apparatus comprising—a pair of plates (5) defining a longitudinal axis (X), said plates (5) being adjacent to each other along the axis (X) and separable from each other transversely to said axis (X), and being kept adjacent in a normally closed state by elastic means (6); wherein each plate (5) is provided with at least one respective recess positioned so that, when the plates (5) of said pair of plates are in the normally closed state, at least two recesses are adjacent to each other along said longitudinal axis (X) so as to define a seat for a neck mold (4) comprising a pair of split molds (7), each split mold (7) being capable of being accommodated in a recess of a respective plate (5); —a pair of side guides (8) transverse to said longitudinal axis (X), adapted to be fastened to said lower surface of the rotating device (2), each side guide (8) being adapted to support a respective end of the pair of plates (5) from the bottom; wherein the side guides (8) are provided with a respective locking system (9) for locking or unlocking the pair of plates (5) to/from said pair of side guides (8) so that, in an unlocking position, the pair of plates (5) can be extracted transversely to the axis (X) thereof by sliding on the side guides (8).
摘要:
An injection-compression molding device (1), wherein the rod (3) and the core (5) are connected to each other by means of a joint (20) which allows to have a rigid connection in some steps of an injection-compression molding process, and an articulated connection during the compression step of the injection-compression molding process.
摘要:
The invention relates to a new PET preform design that enables a more precise distribution of material in the bottle bottom and avoids the waste of material around the injection point. The thickness BWTmin of the wall at the center of the gate or tip (3) (injection point) is reduced to a minimum in order to avoid the waste of material around the injection point when the preform is blown. This is particular important for carbonated soft drink application since the reduced amount of amorphous material at the center of the gate (3) helps to reduce the risk of stress cracking on the bottle base. Furthermore a step (4) having thickness WTmax in the body wall thickness, in the region of the periphery of the base with WTmax>WT, allows enough material to be available for the proper blowing of the bottle bottom making the bottle more stable.
摘要:
The invention relates to a container (100) for drinks suitable for hot filling and compressible so as to be able to draw the drink out by means of a pressure exerted on the side walls. The container comprises a central body (3) with vacuum compensation function which is created following the cooling of the fluid after the hot filling. Said central body comprises four trapezoidal-shaped panels (1) and is limited on the top and on the bottom by a set of ribs (6,7) and rings (8,9).
摘要:
An apparatus for conveying a container made of plastic material comprising a supporting frame (3), sliding along a predetermined path; a longitudinal rod (20), defining an axis (X), adapted to translate along axis (X) and/or to rotate about axis (X) through guide-holes (24′, 25′) provided in the supporting frame; a gripping device (22), fixed to the longitudinal rod, for picking and withholding an end of the container to be conveyed; wherein the translation strokes of the longitudinal rod (20) and of the gripping device (22) can be adjusted along axis (X) so that the gripping device (22) can operate at three working levels or positions: a resting position (L0), a gripping position (L1) and a releasing position (L2).