Injection molding machine, control method of injection molding machine, and computer readable storage medium

An injection molding machine comprising:

• an injection device comprising at least a first injection unit and a second injection unit;
• and one mold clamping device, wherein
• the mold clamping device is mounted with one mold device forming at least a first cavity space and a second cavity space which do not communicate with each other, or the mold clamping device is mounted with at least a first mold device forming the first cavity space and a second mold device forming the second cavity space, wherein the first cavity space and the second cavity space are formed by a fixed-side mold and a movable-side mold,
• a molding material is injected and filled into the first cavity space by the first injection unit to mold a first molded product, and a molding material is injected and filled into the second cavity space by the second injection unit to mold a second molded product,
• the injection molding machine further comprising:
• a control device which controls the injection device and the mold clamping device;
• and a storage device which stores a set time in advance, wherein
• the first injection unit comprises a first injection cylinder and a first injection shaft moving back and forth in a cylinder hole of the first injection cylinder,
• the second injection unit comprises a second injection cylinder and a second injection shaft moving back and forth in a cylinder hole of the second injection cylinder,
• the control device is configured to start an operation of the mold clamping device and then temporarily stop the operation of the mold clamping device during a mold closing operation or during a mold clamping operation performed after completion of the mold closing operation, and
• after temporarily stopping the operation of the mold clamping device during the mold closing operation or during the mold clamping operation performed after completion of the mold closing operation, the control device is configured to start advancement of the first injection shaft to start injection filling of the first injection unit, and resumes the operation of the mold clamping device at a time point at which the advancing first injection shaft reaches a predetermined position, and the injection filling of the first injection unit is stopped later than when the operation of the mold clamping device is completed,
• the control device is configured to perform control to start injection filling of the second injection unit after elapse of the set time from a predetermined time point,
• the predetermined time point is any time point from a time point before the first injection unit starts injection filling to a time point at which the first injection unit starts injection filling, and
• the set time is a delay time set to a time which enables the start of injection filling of the second injection unit to be delayed from the start of injection filling of the first injection unit.