Abstract:
According to embodiments, there is provided a method (300) of controlling a first melt accumulator (121). The first melt accumulator (121) is part of an injection unit (100), the injection unit (100) including an extruder (102) for preparing molding material and a second melt accumulator (123). The first melt accumulator (121) and the second melt accumulator (123) are configured to sequentially receive molding material from the extruder (102). The extruder (102) is being operable to produce molding material in at least near continuous manner, both the first melt accumulator (121) and the second melt accumulator (123) being associated with a respective shot size set-point. The method comprises detecting (310) an indication of an out-of- boundary condition associated with operation the first melt accumulator (121); responsive to said detecting (310), controlling (320) the first melt accumulator (121) to continue accepting molding material beyond its respective shot size set-point.
Abstract:
A mold-tool system (105) for use with a molding-system platen structure (107), the mold-tool system (105) comprising: a frame assembly (103) being connectable with the molding-system platen structure (107); and a set of shooting-pot assemblies (204) being supported by the frame assembly (103), wherein control of each shooting-pot assembly of the set of shooting-pot assemblies (204) is independent.
Abstract:
A method for manufacturing products using a mold having at least one mold cavity which is at least partly defined by at least two movable wall parts, wherein the mold is closed and the at least two movable wall parts (35A, 35B) are brought to a retracted position relative to the mold cavity, so that the volume of the mold cavity is enlarged relative to the volume required for a product to be formed, wherein at least partly molten material is introduced into the mold cavity and then in a first step a first one (35A) of the at least two movable wall parts is set into motion in the direction of a forwardly moved position and in a second step a second one (35B) of the at least two movable wall parts is set into motion in the direction of a forwardly moved position, wherein the movable wall parts are moved into said forwardly moved position for the formation of the product.
Abstract:
A method is described for moulding a plastics article having a non-circular base. The method comprises the steps of providing a mould cavity (30) of the same shape as the article between relatively movable parts of a mould (16), applying a first force to close the mould, injecting into the base of the mould cavity a predetermined dose of plastics material sufficient to form the finish formed article, the injection pressure being sufficient to cause the mould parts to separate against the action of the applied first force whereby the injected dose of plastics material spreads to cover the entire area of the base of the cavity, and applying a greater second force to close the mould cavity fully by moving the mould parts further relative to one another, the second force being sufficient to cause the injected plastics material to flow into wall sections of the mould extending from the perimeter of the non-circular base.
Abstract:
A method for manufacturing products using a mold having at least one mold cavity which is at least partly defined by at least two movable wall parts, wherein the mold is closed and the at least two movable wall parts are brought to a retracted position relative to the mold cavity, so that the volume of the mold cavity is enlarged relative to the volume required for a product to be formed, wherein at least partly molten material is introduced into the mold cavity and then in a first step a first one of the at least two movable wall parts is set into motion in the direction of a forwardly moved position and in a second step a second one of the at least two movable wall parts is set into motion in the direction of a forwardly moved position, wherein the movable wall parts are moved into said forwardly moved position for the formation of the product.