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Plastic Injection Molding Parts Removal, Degating and Orientation

IP.com Disclosure Number: IPCOM000044562D
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06

Publishing Venue


Related People

Majewski, FT Riggs, CD [+details]


This design permits automatic removal and degating of hot plastic parts, thereby eliminating the necessity of putting hands into the hot area of the press. The device also orientates parts for subsequent operations. Since the robot head of the IBM 7535 was too large to enable entry of parts into a plastic injection molding machine, a gripper extension arm 2 (Fig. 1) is affixed to wrist attachment 3. To enable parts to enter the mold area between the four guide posts 1, special fingers are attached to the standard gripper 4. As gripper arm 2 enters the mold area, gripper fingers 4 grasp the sprue 5. The arm 2 then moves away from the mold, extracting the sprue and attached parts. When the arm is clear, the machine will rotate to the air press area 6 (Fig. 2).