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AssigneeNissei Plastic Industrial Co., Ltd.
InventorsHaruo Okada, Toshimi Kato, Masaki Miyazaki, Hiroo Kudo
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A measurement method including a main measurement process Sa in which measurement is performed by rotating a screw in the forward direction with a back-flow prevention valve installed on its tip and a post-measurement process Sb which is performed by rotating the screw in a reverse direction after the main measurement process Sa is finished, the post-measurement process Sb being performed after completing the main measurement process Sa, in which the screw is moved forward in a free rotational state, the rotational state of the screw during the forward movement being monitored, and if the rotation of screw comes to a halt, the screw is rotated in a reverse direction by a specified amount of rotation.
A measurement method for injection molding machines which comprises performing a main measurement by rotating in a forward direction a screw with a back-flow prevention valve installed on its tip and rotating said screw in a reverse direction to perform a post-measurement processing after the main measurement process is finished, wherein in said post-measurement process the screw is put in a free-rotation state and moved forward after said main measurement process is finished, the rotational state of said screw during this forward movement being monitored, so that if the rotation of said screw comes to a halt, said screw is rotated in a reverse direction by a specified amount of rotation and wherein said post-measurement process includes a suck-back processing step which moves the screw in the backward direction by a specified stroke after rotating said screw in reverse.
Dependencies are inferred from the claim text.