Screw maintenance jig of metal injection molding machine, and screw maintenance method
AssigneeThe Japan Steel Works, Ltd.
InventorMichio BUTANI
Life of this patent
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Abstract
A screw maintenance jig includes a pipe-shaped screw accommodation portion and a suspension portion. The screw accommodation portion includes pipe division members that each have a shape obtained by dividing the screw accommodation portion either by a plane that is parallel to a cylindrical axis thereof or by a plane that includes the cylindrical axis within the plane. The pipe division member are arranged adjacent to each other or joined together to form the screw accommodation portion. The pipe division members are arranged apart from each other or separated to open the inside of the screw accommodation portion.
Claims10
A screw maintenance jig for a metal injection molding machine that is for maintaining a screw of the metal injection molding machine, the screw maintenance jig comprising:
- a pipe-shaped screw accommodation portion configured to accommodate the screw inserted therein;
- and
- a plurality of suspension portions provided for the screw accommodation portion,
- wherein the screw accommodation portion includes a plurality of pipe division members each having a shape obtained by dividing the screw accommodation portion by a plane that is parallel to a cylindrical axis of the screw accommodation portion or a plane that includes the cylindrical axis within the plane, and
- wherein the screw accommodation portion is configured such that when the plurality of pipe division members are arranged close to each other or joined together, the pipe-shaped screw accommodation portion is formed, and when at least some of the pipe division members are arranged apart from each other or separated, an inside of the screw accommodation portion is opened.
A screw maintenance method for a metal injection molding machine that maintains a screw of the metal injection molding machine using a screw maintenance jig,
- the screw maintenance jig including:
- a pipe-shaped screw accommodation portion configured to accommodate the screw inserted therein;
- and
- a plurality of suspension portions provided for the screw accommodation portion,
- the screw accommodation portion including a plurality of pipe division members each having a shape obtained by dividing the screw accommodation portion by a plane that is parallel to a cylindrical axis of the screw accommodation portion or a plane that includes the cylindrical axis within the plane,
- the screw accommodation portion being configured such that when the plurality of pipe division members are arranged close to each other or joined together, the pipe-shaped screw accommodation portion is formed, and when at least some of the pipe division members are arranged apart from each other or separated, an inside of the screw accommodation portion is opened,
- the screw maintenance method comprising:
- a preparation step including hooking the suspension portions onto a predetermined external hook to suspend the screw maintenance jig in a state where the pipe-shaped screw accommodation portion is formed by the plurality of pipe division members, and disposing the screw accommodation portion downstream of a heating cylinder of the metal injection molding machine;
- a screw detaching step including inserting an extrusion rod into the heating cylinder from an upstream side to extrude the screw on a downstream side, and inserting and accommodating the screw in the screw accommodation portion;
- a transportation step including transporting the screw maintenance jig with the screw accommodated in the screw accommodation portion to a maintenance work area;
- a cooling step including waiting for the screw to cool while the screw is accommodated in the screw accommodation portion;
- and
- a screw removing step including opening the inside of the screw accommodation portion and removing the screw.
Dependencies are inferred from the claim text.