摘要:
A method of molding and an injection-compression molding machine for achieving said method of molding aimed at the adjustabiiity of a charging speed of molten resins in a metallic mcid according to a shape of molded product by changing an opening and closing speed of the metallic mold or an injecting speed of the molten resins in an injecting mechanism according to a quantity of molten resin charged in the metallic mold or a quantity of molten resin injected by means of the injecting mechanism to always produce stable molded products in a short time even though a shape is changed. Said injection-compression molding machine comprises a compression mechanism (21) for tightening the metallic mold, an injection mechanism (10) for injecting the molten resin into the metallic mold, a stroke-detecting device (25a) for the compression mechanism, an opening and closing speed-detecting device (26a) for the metallic mold, an injecting speed-detecting device (16a) for the injecting mechanism, a controller (40) provided with a compression mechanism stroke input-setting device (25b), a metallic mold-opening and closing speed input-setting device (26b), an injection speed input-setting device (16b) and an interface (45), a compression mechanism-driving device (21c) and an injection mechanism-driving device (14c).
摘要:
A molding method and an injection-compression molding machine provided with an opening/closing valve between an injection unit and a metallic mold for achieving said molding method, in which in order to make the density of molten resins uniform and thus produce stable molded products, said valve is closed to carry out the preliminary pressing within the injection unit before the molten resin is injected into the metallic mold and then the molten resin is pressed within the metallic mold during or after the injection. This molding machine is arranged in a molten resin passage (46) provided between the injection unit (10) and the metallic mold (30) so as to be opened and closed and provided with the valve (40) for closing said passage and changing a sectional area of said passage.
摘要:
A molding method and an injection-compression molding machine provided with an opening/closing valve between an injection unit and a metallic mold for achieving said molding method, in which in order to make the density of molten resins uniform and thus produce stable molded products, said valve is closed to carry out the preliminary pressing within the injection unit before the molten resin is injected into the metallic mold and then the molten resin is pressed within the metallic mold during or after the injection. This molding machine is arranged in a molten resin passage (46) provided between the injection unit (10) and the metallic mold (30) so as to be opened and closed and provided with the valve (40) for closing said passage and changing a sec. tional area of said passage.
摘要:
A device for and method of molding for an injection molding machine, by which fluctuation in weight of an injection-molded resin product is reduced to stabilize its quality. For satisfying the purpose, a screw (61) of an injection unit (30) is moved forward to start injection of molten resin when the upper metallic mold (15) reaches a specified position, decelerated to a specified speed when advanced to a fixed position, and stopped when it reaches a predetermined stop position; and molten resin is reduced in injection flow quantity and pressurized until the gate (71) is closed.
摘要:
A method of molding and an injection-compression molding machine for achieving said method of molding aimed at the adjustability of a charging speed of molten resins in a metallic mold according to a shape of molded product by changing an opening and closing speed of the metallic mold or an injecting speed of the molten resins in an injecting mechanism according to a quantity of molten resin charged in the metallic mold or a quantity of molten resin injected by means of the injecting mechanism to always produce stable molded products in a short time even though a shape is changed. Said injection-compression molding machine comprises a compression mechanism (21) for tightening the metallic mold, an injection mechanism (10) for injecting the molten resin into the metallic mold, a stroke-detecting device (25a) for the compression mechanism, an opening and closing speed-detecting device (26a) for the metallic mold, an injecting speed-detecting device (16a) for the injecting mechanism, a controller (40) provided with a compression mechanism stroke input-setting device (25b), a metallic mold-opening and closing speed input-setting device (26b), an injection speed input-setting device (16b) and an interface (45), a compression mechanism-driving device (21c) and an injection mechanism-driving device (14c).
摘要:
A device for and method of molding for an injection molding machine, by which fluctuation in weight of an injection-molded resin product is reduced to stabilize its quality. For satisfying the purpose, a screw (61) of an injection unit (30) is moved forward to start injection of molten resin when the upper metallic mold (15) reaches a specified position, decelerated to a specified speed when advanced to a fixed position, and stopped when it reaches a predetermined stop position; and molten resin is reduced in injection flow quantity and pressurized until the gate (71) is closed.