A molding cycle stopping method includes: in a case of stopping an operation of a molding cycle in an injection device including a heating cylinder and a screw provided in the heating cylinder, performing a temperature lowering process including lowering a temperature of the heating cylinder from a molding cycle execution temperature to a standby temperature; and performing a continuous purge process including repeatedly purging a resin until a predetermined termination condition is satisfied.

An injection molding machine includes a storage unit in which input information input via an operation unit and a molding condition under which molding is performed using a gain specified by the input information are stored in association with each other, and a control unit configured to generate a signal with a feedback-control, which uses a difference between a set value used to control an object to be controlled and an actual value measured from the object to be controlled and the gain specified by the input information associated with the molding condition, and to control a drive source using the signal to perform the molding, in a case where the molding indicated by the molding condition is performed.

An injection molding machine includes an injection member that pushes a molding material and an injection drive source that moves the injection member. A control device of the injection molding machine includes an injection control unit that controls a stop process for stopping a movement of the injection member and a holding pressure process for controlling a pressure acting on the molding material from the injection member, a pressure monitoring unit that monitors an actual value of the pressure in the stop process, and a timing setting unit that sets a timing when the stop process is to be switched to the holding pressure process on the basis of the actual value of the pressure in the stop process and a value offset from a set value of the pressure at a time of start of the holding pressure process to a high pressure side by a predetermined amount.

Method for initial adjustment of a facility for producing a series of containers from a container model based on a series of preforms from a preform model. The facility includes a forming machine with a forming station where a preform is formed into a container. The initial adjustment method includes: determining a preform parameter relative to the preform model and a container parameter relative to the container model to be produced based on the preform model; determining at least one adjustment parameter of the forming machine, making it possible to produce a container in conformance with the container model based on a preform in conformance with the preform model; and adjusting the forming machine according to the preform, container and adjustment parameters. The step for determining at least one adjustment parameter of the forming machine is done by calculation based on pre-recorded formulas, utilizing the preform and container parameters.

A mold for molding an object having a section of increased thickness includes a mold cavity comprising a first zone and a second zone and a means for providing a different thermal conductivity at the first and second zone of the mold cavity.

A method of monitoring and controlling a sequential valve gate molding apparatus in an injection molding or other molding process is disclosed. The method includes creating a target strain profile, receiving a deviation limit, receiving a change in strain relating to a first valve gate from a first strain gauge, identifying whether a deviation exists from a first portion of the target strain profile based on the output from the first strain gauge, determining whether any existing deviation exceeds the deviation limit, and adjusting the position of a first valve gate pin in the first valve gate if it does. The method may further include control of subsequent valve gates. Multiple strain gauges may be used to control a single valve gate, and/or each strain gauge may control more than one valve gate.

In a control device of an injection molding machine, an operation mode of a resin purge operation is adjusted so that a plasticization amount index related to a plasticization amount of resin per unit time in the resin purge operation is approximately accorded with a target plasticization amount index which is set. Accordingly, thermal degradation of resin can be prevented, active time from start of a molding operation to completion of a non-defective molded article can be shortened, and production efficiency can be enhanced. Further, the plasticization amount index is not necessarily set by an operator, so that a load on the operator can be reduced as well.

A method for continuously manufacturing molded products by repeating a plurality of molding cycles includes, in each molding cycle, filling a resin composition into a mold, pressing the resin composition in the mold, cooling the resin composition in the mold using cooling water, and releasing the resin composition from an interior of the mold to obtain a molded product. An A-th molding cycle of the plurality of molding cycles can be a delay cycle delayed from a B-th molding cycle. When the A-th cycle is the delay cycle, the flow rate of the cooling water flowing in the mold at the cooling step is decreased in the A-th cycle as compared with the B-th cycle.

The present invention enables injection by an injection device to be carried out in an early stage while obviating nozzle touch, and shortens the molding cycle of an injection stretch blow molding machine. In the present invention, an injection device 20, which is designed to perform injection when a value counted up by a timer reaches a set count value, is linked and fixed to a hot runner device 19 of an injection stretch blow molding machine 1. The count start point of the timer is set to: a stage in which a rotating plate rotates; a stage in which the rotating plate is made to stop rotating and is non-rotatably fixed; or a stage in which mold clamping of an upper mold and a lower mold begins.

A molding apparatus for the production of articles molded through sequential injection includes a mold having a cavity, a plurality of electrically actuated injectors arranged at central, intermediate and end positions, respectively, with respect to the mold cavity, and an electronic system for controlling the injectors for the actuation thereof according to a sequential cycle which provides for opening the central injector first, followed by the intermediate injectors and then the end injectors. The electronic control system is configured so that the opening sequential cycle occurs in such a way to obtain more linear and homogeneous pressure in the mold filling step, and lower packing pressure.