MAINTENANCE METHOD FOR INJECTION MOLDING MACHINE, INJECTION MOLDING UNIT, AND MAINTENANCE JIG FOR INJECTION MOLDING MACHINE

• Main Author: NAKAMURA, Kyousuke
• Format: Patent
• Language: English
• Published: 06.07.2023
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To reliably and safely suppress co-rotation of a screw drive unit when performing a tightening and loosening operation for a threaded fastener which fixes a screw to the screw drive unit. Provided is an injection molding machine 2 in which a threaded fastener 30 is tightened into a first threaded portion 23a of a screw drive unit 21, thereby fixing a screw 10 to the screw drive unit 21 through a fixation bush 25, wherein a jig 40, which is detachably mounted on the screw drive unit 21, and is brought into contact with a main body contact portion 4 of a main body portion 3 of the injection molding machine 2 by rotating the screw drive unit 21 to restrict further rotation of the screw drive unit 21, is mounted on the screw drive unit 21, and the threaded fastener 30 is tightened or loosened with respect to the first threaded portion 23a with the jig 40 in contact with the main body contact portion 4.