A mold clamping device includes two mold platens; a ball screw mechanism connecting the mold platens to each other, the ball screw mechanism being provided with an axial force detector configured to detect an axial force acting on the ball screw mechanism; a servo motor provided on the ball screw mechanism and configured to drive the ball screw mechanism; and a control device configured to: monitor the axial force detected by the axial force detector during injection; and based on detecting an axial force increase, the axial force increase being an increase in the axial force, perform a mold clamping force increase control including driving the servo motor to increase a mold clamping force for tightening the ball screw mechanism.

The molding system including a molding apparatus comprising, a mold clamping force sensor for detecting a mold clamping force generated in a mold, a detection unit for detecting an apparatus failure of the molding apparatus and/or molding of a defective article by the molding apparatus based on an amount of change in mold clamping force detected by the mold clamping force sensor, an operation mode prediction unit for predicting the operation mode of the molding apparatus based on an amount of change in mold clamping force detected by the mold clamping force sensor and, an actual operation mode acquisition unit for acquiring the actual operation mode of the molding apparatus without relying on the mold clamping force sensor.

A mold clamping apparatus according to the present invention includes: a fixed platen to which one mold of a pair of molds is to be mounted; a movable platen which is disposed opposite the fixed platen and to which the other mold is to be mounted; a pressure-receiving platen connected to the fixed platen via tie bars; a mold opening/closing mechanism including a toggle link mechanism for opening/closing and clamping the molds by moving the movable platen back and forth; a drive mechanism including a servo motor for driving the mold opening/closing mechanism; and a control device for controlling the servo motor, wherein the control device includes an acceleration/deceleration adjustment section capable of adjusting an acceleration time, a deceleration time and a target speed of the servo motor during a mold clamping operation.

A specific mold status Ac is caused in advance in which the interval of an inner portion Xi in the parting plane direction of a parting gap C between a fixed mold 2c and a movable mold 2m during the injection filling is larger than the interval of an outer edge portion Xo and the interval of the outer edge portion Xo is equal to or lower than a predetermined size Ls including 0. A molding injection pressure Pi is set as an injection pressure at which a non-defective product can be molded and a molding mold clamping force Pc is set as a mold clamping force by which a non-defective product can be molded. During the production, a mold 2 is clamped by a molding mold clamping force Pc and the clamped mold 2 is filled with the injected resin R by a molding injection pressure Pi. After a predetermined cooling time Tc has passed, a molded piece G is removed.

The molding system including a molding apparatus comprising, a mold clamping force sensor for detecting a mold clamping force generated in a mold, a detection unit for detecting an apparatus failure of the molding apparatus and/or molding of a defective article by the molding apparatus based on an amount of change in mold clamping force detected by the mold clamping force sensor, an operation mode prediction unit for predicting the operation mode of the molding apparatus based on an amount of change in mold clamping force detected by the mold clamping force sensor and, an actual operation mode acquisition unit for acquiring the actual operation mode of the molding apparatus without relying on the mold clamping force sensor.

An injection molding machine, which includes a safety door that can be opened and closed, is further equipped with a servo motor configured to open and close the safety door, a presence detector configured to detect whether or not an operator or object is present within a door operating space of the safety door or within a predetermined vicinal area of the safety door including the door operating space, and a controller configured to control the servo motor with a reference control amount in order to perform a closing operation of the safety door, and during a time it is detected by the presence detector that an operator or object is present, to cause a control amount that controls the servo motor in order to perform the closing operation of the safety door to decrease from the reference control amount.

A specific mold status Ac is caused in advance in which the interval of an inner portion Xi in the parting plane direction of a parting gap C between a fixed mold 2c and a movable mold 2m during the injection filling is larger than the interval of an outer edge portion Xo and the interval of the outer edge portion Xo is equal to or lower than a predetermined size Ls including 0. A molding injection pressure Pi is set as an injection pressure at which a non-defective product can be molded and a molding mold clamping force Pc is set as a mold clamping force by which a non-defective product can be molded. During the production, a mold 2 is clamped by a molding mold clamping force Pc and the clamped mold .sub.2 is filled with the injected resin R by a molding injection pressure Pi. After a predetermined cooling time Tc has passed, a molded piece G is removed.

A method of controlling a manufacturing process having a machine to form a material in to a component. The method comprises the steps of establishing an initial set of operating parameters for the machine, producing an initial component from the machine, inspecting the component to determine its acceptability relative to a desired component, determining a variation in the operating parameters to improve the acceptability of the component, effecting changes in the operating parameters and inspecting subsequent components to determine their acceptability.

A control device of an injection molding machine, the injection molding machine including: a mold clamping device that advances and retracts a movable mold with respect to a fixed mold; and an injection device that injects and fills a molten material into a cavity formed between both the molds, the control device including: a display unit that displays a setting screen for setting molding conditions of the injection molding machine; and a setting unit that sets the molding conditions based on information displayed on the setting screen.

An arrangement with a first clamping unit including a first fixed platen and a first movable platen movable relative thereto, a first clamping force mechanism to apply a clamping force to the first movable platen, and a control or regulating unit for controlling or regulating the first clamping force mechanism. Arranged next to and/or above the first clamping unit is a second clamping unit including a second fixed platen or the first fixed platen and a second movable platen movable relative thereto and which are suitable for carrying at least one mold, and a second clamping force mechanism to apply a clamping force to the second movable platen. The control or regulating unit can actuate the first clamping force mechanism and the second clamping force mechanism to apply a clamping force synchronously when all platens present jointly carry a mold.