Abstract: An injection molding machine includes a plasticating unit for plasticating a thermoplastic resin, and an injecting unit connected to the plasticating unit through a connecting passage to inject the plasticated resin into a mold. In the connecting passage, provided is a buffering unit for reserving the resin in an amount at least equal to the quantity of the resin injected per one shot. The plasticated resin is temporarily reserved in the buffering unit, and then, the reserved resin is fed to the injecting unit when the measuring is carried out, whereby the plasticating unit can be driven continuously simultaneously with the operation of the injecting unit and the mold. The molding cycle can shortened with the plastication efficiency being enhanced.

Abstract: To provide a resin molding machine that can reduce cost by eliminating the need for a residual-material remover, and can reduce cycle time and the amount of residual material, the resin molding machine includes a stationary cavity plate that has a gate communicating with a cavity, a sprue bushing in which a sprue is formed for feeding a molding material through the gate into the cavity, a runner plate disposed between the stationary cavity plate 13 and the sprue bushing, a cylinder unit (runner-plate driving mechanism) for rectilinearly reciprocating the runner plate between ejecting positions and via a molding position, the ejecting positions being separated from the molding position A and provided for ejecting the residual material, and an ejecting channel (residual-material ejecting mechanism) for ejecting the residual material at the ejecting positions.

Abstract: An injection molding machine includes a plasticating unit for plasticating a thermoplastic resin, and an injecting unit connected to the plasticating unit through a connecting passage to inject the plasticated resin into a mold. In the connecting passage, provided is a buffering unit for reserving the resin in an amount at least equal to the quantity of the resin injected per one shot. The plasticated resin is temporarily reserved in the buffering unit, and then, the reserved resin is fed to the injecting unit when the measuring is carried out, whereby the plasticating unit can be driven continuously simultaneously with the operation of the injecting unit and the mold. The molding cycle can shortened with the plastication efficiency being enhanced.

Abstract: An injection molding machine includes a plasticating unit for plasticating a thermoplastic resin, and an injecting unit connected to the plasticating unit through a connecting passage to inject the plasticated resin into a mold. In the connecting passage, provided is a buffering unit for reserving the resin in an amount at least equal to the quantity of the resin injected per one shot. The plasticated resin is temporarily reserved in the buffering unit, and then, the reserved resin is fed to the injecting unit when the measuring is carried out, whereby the plasticating unit can be driven continuously simultaneously with the operation of the injecting unit and the mold. The molding cycle can shortened with the plastication efficiency being enhanced.

Abstract: To provide a resin molding machine that can reduce cost by eliminating the need for a residual-material remover, and can reduce cycle time and the amount of residual material, the resin molding machine includes a stationary cavity plate 13 that has a gate 13a communicating with a cavity C, a sprue bushing 16 in which a sprue 16a is formed for feeding a molding material through the gate 13a into the cavity C, a runner plate 20 disposed between the stationary cavity plate 13 and the sprue bushing 16, a cylinder unit (runner-plate driving mechanism) 25 for rectilinearly reciprocating the runner plate 20 between ejecting positions B1 and B2 via a molding position A, the ejecting positions B1 and B2 being separated from the molding position A and provided for ejecting the residual material, and an ejecting channel (residual-material ejecting mechanism) 30 for ejecting the residual material at the ejecting positions B1 and B2.

Abstract: A method of injection-moulding includes separating an injection nozzle from a mould during every moulding cycle. An apparatus for carrying out the method is also disclosed.

Abstract: An injection molding machine includes a plasticating unit for plasticating a thermoplastic resin, and an injecting unit connected to the plasticating unit through a connecting passage to inject the plasticated resin into a mold. The injecting unit A includes a rotary pump having a suction port connected to the plasticating unit through the connecting passage and a discharge port connected to the mold. The plasticated resin is intermittently injected into the cavity of the mold through the injection port by means of the rotary pump. In the connecting passage, an accumulator is provided which reserves the resin plasticated in the plasticating unit in an amount equal to or more than the shot capacity, and feeds the resin to the rotary pump.

Abstract: An injection molding machine includes a plasticating unit for plasticating a thermoplastic resin, and an injecting unit connected to the plasticating unit through a connecting passage to inject the plasticated resin into a mold. The injecting unit A includes a rotary pump having a suction port connected to the plasticating unit through the connecting passage and a discharge port connected to the mold. The plasticated resin is intermittently injected into the cavity of the mold through the injection port by means of the rotary pump. In the connecting passage, an accumulator is provided which reserves the resin plasticated in the plasticating unit in an amount equal to or more than the shot capacity, and feeds the resin to the rotary pump.

Abstract: An injection molding machine includes a plasticating unit for plasticating a thermoplastic resin, and an injecting unit connected to the plasticating unit through a connecting passage to inject the plasticated resin into a mold. The injecting unit A includes a rotary pump having a suction port connected to the plasticating unit through the connecting passage and a discharge port connected to the mold. The plasticated resin is intermittently injected into the cavity of the mold through the injection port by means of the rotary pump. In the connecting passage, an accumulator is provided which reserves the resin plasticated in the plasticating unit in an amount equal to or more than the shot capacity, and feeds the resin to the rotary pump.

Abstract: An injection moulding machine includes a mould unit (B) and an injection unit (A) for injecting a plasticated resin into the mould unit (B) through an injection nozzle (11), the mould unit (B) including a mould opening-closing means (36), a first mould (31) which is driven to be opened or closed by the mould opening-closing means (36), a second mould (30) which is operated together with the first mould (31) to define a cavity between them and be brought into contact with the injection nozzle (11), a first guiding means (39) for guiding the second mould (30) in such a manner that the second mould can be moved in the mould opening-closing direction, a stroke-regulating means (40) for regulating the length of stroke in the mould opening-closing direction of the second mould (30), and a first energizing means (41) for energizing the second mould (30) in the including of the first mould (31), and the injection unit (A) comprising a second guiding means (8) for guiding the injection nozzle (11) in such a manner tha