Browse Prior Art Database

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
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Majewski, FT: AUTHOR [+2]

Abstract

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).

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 63% of the total text.

Page 1 of 2

Plastic Injection Molding Parts Removal, Degating and Orientation

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). During this cycle, the wrist action rotates the sprue 5 so that the parts are in position and placed in the shear die 7. A stop pad and screw 8 is provided to assure positive alignment of the "Z" axis with the shear die. The air press 6 is activated, causing the ram 9 to descend and separate the parts (degate) from the sprue 5. Attached to the degating die is a magazine holder containing two magazines 10 to enable parts to fall in proper orientation. The magazines 10 are easily snapped in or out and are held in place by means of spring pins 11 on one side and by fixed guide pins 12 on the other side. For positioning the opposite side, the magaz...