Cooling plate assembly for an injection molding machine
AssigneeNiigon Machines Ltd.
InventorsRobert D. Schad, Roberto Sicilia
Life of this patent
Estimating the term…
Abstract
A method for receiving and ejecting molded articles includes: (a) drawing air from a cooling tube cavity into an air channel through a plate bore to draw at least a portion of a molded article into the cavity; (b) moving a valve within the plate bore from a first position for conducting air from the cavity to the air channel to a second position for reducing air flow through the plate bore relative to the first position; and (c) when the valve is in the second position, urging pressurized air from the air channel to the cavity through the plate bore to assist ejection of the molded article from the cavity.
Claims9
A method for receiving and ejecting molded articles, comprising:
- a) drawing air from a cavity of a cooling tube into an air channel of a cooling plate to draw a portion of a molded article into the cavity, the air drawn through an air flow gap between a movable closure member and a valve seat fixed to a movable ejector member;
- and
- b) after step (a), urging pressurized air from the air channel toward the cavity, the pressurized air moving the closure member into engagement with the valve seat to close the air flow gap, and the pressurized air advancing the ejector member relative to the cooling tube to assist ejection of the molded article from the cavity.
A method for receiving and ejecting molded articles, comprising:
- a) drawing air from a cavity of a cooling tube into an air channel of a cooling plate to draw a portion of a molded article into the cavity, the air drawn through a first flow passage in a movable ejector member when the ejector member is in a retracted position relative to the cooling tube, the first flow passage comprising a first air flow gap between a valve seat fixed to the movable ejector member and closure member movable relative to the valve seat;
- and
- b) after step (a), urging pressurized air from the air channel toward the cavity, the pressurized air moving the closure member into engagement with the valve seat to obstruct the first air flow passage by closing the first air flow gap, and the pressurized air advancing the ejector member relative to the cooling tube to assist ejection of the molded article from the cavity.
Dependencies are inferred from the claim text.