Control device for injection molding machine, and control method for injection molding machine

A control device for an injection molding machine, the control device comprising:

• a processor configured to:
• change, in a filling step of filling an inside of a mold device with a molding material during clamping, a set value of clamping force from a first set value to a second set value that is larger than the first set value, at a predetermined pressurizing timing in a middle of the filling step;
• monitor a change in an actual value of the clamping force due to a change in the set value of the clamping force;
• and
• set a setting value for changing a setting of the pressurizing timing based on the change in the actual value of the clamping force due to the change in the set value of the clamping force monitored by the monitoring part.

A control device for an injection molding machine, the control device comprising:

• a processor configured to;
• change, in a filling step of filling an inside of a mold device with a molding material during clamping, a set value of clamping force from a first set value to a second set value that is larger than the first set value, at a predetermined pressurizing timing in a middle of the filling step;
• and
• monitor a change in an actual value of the clamping force due to a change in the set value of the clamping force;
• and
• display a result of monitoring by the processor on a display device,
• wherein the processor is further configured to display on the display device a waveform of the actual value of the clamping force and an upper limit value of an overshoot amount of the actual value with respect to a predetermined reference value.

A control method for an injection molding machine, the control method comprising:

• in a filling step of filling an inside of a mold device with a molding material during clamping, changing a set value of clamping force from a first set value to a second set value that is larger than the first set value, at a predetermined pressurizing timing in a middle of the filling step;
• monitoring a change in an actual value of the clamping force due to a change in the set value of the clamping force,
• determining adequacy of the predetermined pressurizing timing based on the change in the actual value of the clamping force monitored by the monitoring, and
• adjusting the predetermined pressurizing timing based on a determination of the adequacy of the predetermined pressurizing timing.

A control device for an injection molding machine, the control device comprising:

• a processor that is configured to:
• change, in a filling step of filling an inside of a mold device with a molding material during clamping, a set value of clamping force from a first set value to a second set value that is larger than the first set value, at a predetermined pressurizing timing in a middle of the filling step;
• monitor a change in an actual value of the clamping force due to a change in the set value of the clamping force, and
• display a result of monitoring by the processor on a display device,
• wherein the processor is further configured to display, on the display device, a waveform of the actual value of the clamping force and an allowable range of timing at which the actual value satisfies a predetermined condition.