Abstract: A cradle device for a computer according to an embodiment includes: a cradle part configured such that the inlet part is seated thereon and holes through which air flows are formed therein; a filter part configured to filter out foreign substances generated according to the flow of air; and a filter housing part configured such that the filter part is coupled to a top surface thereof, and fixedly coupled below the holes of the cradle part. The filter part includes a first filter part made of a mesh material, and filters out foreign substances through the first filter part before air is introduced into the inlet part.

Abstract: A cradle device for a computer according to an embodiment includes: a cradle part configured such that the inlet part is seated thereon and holes through which air flows are formed therein; a filter part configured to filter out foreign substances generated according to the flow of air; and a filter housing part configured such that the filter part is coupled to a top surface thereof, and fixedly coupled below the holes of the cradle part. The filter part includes a first filter part made of a mesh material, and filters out foreign substances through the first filter part before air is introduced into the inlet part.

Abstract: A screw control method of an injection molding machine including a barrel into which a resin is inserted, a screw installed to be rotatable inside the barrel, a check ring on a rear side of a screw head, and a controller controlling operations of the screw includes: measuring an amount of resin to be injected and inserting the resin into the barrel until the amount of resin reaches the measured amount of resin; completing the measurement while melting the inserted resin through rotation of the screw; stopping the rotation of the screw after completing the measurement of the resin; after retracting the screw of which the rotation is stopped a pre-set distance, advancing the screw a pre-set distance; and performing injection molding of the melted resin by advancing the screw, where the rotation, advance, and retraction operations of the screw are made according to control signals of the controller.

Abstract: A screw control method of an injection molding machine including a barrel into which a resin is inserted, a screw installed to be rotatable inside the barrel, a check ring on a rear side of a screw head, and a controller controlling operations of the screw includes: measuring an amount of resin to be injected and inserting the resin into the barrel until the amount of resin reaches the measured amount of resin; completing the measurement while melting the inserted resin through rotation of the screw; stopping the rotation of the screw after completing the measurement of the resin; after retracting the screw of which the rotation is stopped a pre-set distance, advancing the screw a pre-set distance; and performing injection molding of the melted resin by advancing the screw, where the rotation, advance, and retraction operations of the screw are made according to control signals of the controller.