摘要:
The present invention concerns a polymer container production process and system in which at least one preform is produced by moulding and said preform is blow moulded to form a container. This process comprises the steps of producing at least one reform in a preform production station (15) of a polymer container production system; of transferring said at least one preform to a transfer system (14) comprising a conditioning range by a transfer means; of transferring said at least one preform to a container blow station (23) by said transfer means; of blow moulding said preform in said container blow station of said polymer container production system to form a container, said polymer container production system comprising more separate and independent preform production stations than container blow stations. The process is characterized in that the operation of the preform production stations is adjusted in time so that the separate and independent preform production stations are operated sequentially at different moments in time.
摘要:
Die Erfindung betrifft eine Vorrichtung zum Verarbeiten, vorzugsweise Spritzgießen, von plastischen Massen, die mindestens zwei verschiebliche Formaufspannplatten (1) umfaßt, an die je eine Plastifizier- und Einspritzeinheit (2) angeordnet ist, wobei die mindestens zwei verschieblichen Formaufspannplatten (1) aufeinander zu bewegbar sind, wobei zwischen den zwei verschieblichen Formaufspannplatten (1) ein drehbares Mittelteil (3) angeordnet ist. Erfindungsgemäß ist vorgesehen, dass das Mittelteil (3) aus einem drehbaren und einem festen Teilelement besteht, wobei das drehbare Teilelement um seine vertikale Achse drehbar und das feste Teilelement ortsfest mit dem Maschinenbett (4) verbunden ist und somit seine Position, bezogen auf das Maschinenbett (4), nicht veränderbar ist.
摘要:
A. securing/clamping system for use with platens (12, 14, 16, 212, 214) of a molding machine (10, 210). The system comprises tie bars (20a-20d, 21a-21d, 220a-220d) for connecting the platens; a device for positioning one of the platens (14, 16, 212) on the tie bars connecting the platens and relative another of the platens (12, 214); and a securing/clamping mechanism (22a-22d, 23a-23d, 222a-222d) for forcefully engaging the one of the platens with the another of the platens and on the tie bars, for sustaining forceful engagement of one of the platens with the another of the platens and the tie bars, and for breaking the one of the platens from the another of the platens and the tie bars and means for detecting (102) molded parts trapped in mold halves (26, 29, 30, 31, 226, 229).
摘要:
The invention concerns an injection moulding installation in which an injection unit (17) and a clamping unit (1) are so arranged that the transport direction (16) of the injection unit (17) and the clamping direction of the tools (3, 5; 4, 6) are at right angles to each other. This arrangement permits the tools (3, 5; 4, 6), which are laid out in pairs, to operate either synchronously or alternately with the aid of an appropriate valve (18). The paired layout of the tools (3, 5; 4, 6) enables the forces exerted upon them by feed pressure to be compensated and bending moments within the clamping unit (1) to be avoided.
摘要:
A machine for injection moulding of plastic materials, which comprises an injection press (10) and an injection unit (11). The press carried between a fixed mould-holder plate (14) and a mobile mould-holder plate (15) two, three, or more moulds (21,22,23, ...) that lock shut with the closing movement of the mobile mould-holder plate (15) and by means of locking bolts (26), and the injection unit (11) is placed on one side and oriented transversally to the press and can be transferred on guides (31) to be positioned by each one of said moulds and inject the material from one side of every mould.
摘要:
An injection molding machine is disclosed wherein a molding compound supply means (19, 21) having nozzle means (22) is moveable relative to a plurality of mold stations (A, B). Clamp means (24) are provided as an adjunct to the supply means or to the mold stations for effecting a compound seal at each mold station. Appropriate power means (26) are provided for accomplishing the seal.
摘要:
A system and method of controlling hold pressure applied to molding cavities (71) of a stacked multi-parting injection molding system having desynchronized injection periods while cyclic injection molding a plastic material. A combination of the center molding block (68) and an injection system (75) together provide an adjustable feed system. The feed system is adjusted to enable plastic material to be fed from the injection system through a left branch (81) to the left molding cavity (71). The injected plastic material is confined within the left branch (81) and the left molding cavity (71); and the confined plastic material is hold pressurized by a movable packing element. A like sequence of steps is followed to hold pressurized the right molding cavity. When the molding cavities have desynchronous opening periods, the closed molding cavity is locked to maintain it in a closed position while the other molding cavity is open; and axial clamping force is applied to the locked molding cavity by expanding the thickness of at least one of the molding blocks that defines the locked molding cavity.
摘要:
Système et procédé permettant de commander la pression de maintien appliquée à des cavités de moulage (71) d'un système de moulage à injection, à plusieurs parties empilées ayant des périodes d'injection désynchronisées, tout en moulant cycliquement une matière plastique. Une combinaison du bloc (88) de moulage central et d'un système (75) d'injection constituent ensemble un système d'alimentation réglable. Le système d'alimentation est réglé pour permettre l'alimentation de la matière plastique à partir du système d'injection, à travers une ramification (81) gauche jusqu'à la cavité (71) de moulage gauche. La matière plastique injectée est confinée à l'intérieur de la ramification (81) gauche et de la cavité (71) de moulage gauche, la matière plastique confinée étant maintenue sous pression par un élément d'agglomération mobile. On procède à une séquence d'étapes analogue afin de maintenir sous pression la cavité de moulage. Lorsque les cavités de moulage ont des périodes d'ouverture désynchronisées, la cavité de moulage fermée est verrouillée afin de la maintenir dans une position fermée, tandis que l'autre cavité de moulage est ouverte. Une force de serrage axiale est appliquée à la cavité de moulage verrouillée, par dilatation de l'épaisseur d'au moins un des blocs de moulage définissant la cavité de moulage verrouillée.
摘要:
A method and system of injection molding a thermoplastic material in a sandwich mold (17) which operates with desynchronized injection periods and usually with desynchronized opening and closing periods. The method includes a process of depressurizing the runner system (43, 44) and for preventing molding of layered products when using the desynchronized injection cycle. The method utilizes a bifurcated channel system encompassed by the injection unit (14) and two or more runner systems (43, 44) encompassed by the sandwich mold. Also disclosed is an improved method of transferring thermoplastic material from an injection unit (14) to a sandwich mold when a transfer of molding material along the central axis of the clamping platens is not suitable. The method utilizes one or more snorkels (30, 31) which have a central axis which is displaced from the central axis of the clamping platens (10, 11).