Injetora + kuka

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1 
Workpiece Handling : 
Handling of plastic parts after injection molding 
 
2 
The highly flexible KUKA Robot is able to 
handle various injection-molded automotive 
plastic parts which include left and right trim 
fenders, trim deck panels, back door panels, 
front door panels and door trims. There is 
only one universal triangular-shaped adap-
tor fastened to the robotic arm to accommo-
date 8 combinations of 6 bar pressure multi-
vacuum cup system in order to conform & 
grip the part shapes and sizes. The modular 
light-weight Aluminium structure of the end 
of arm gripper vacuum cups system weighs 
less than 5 kg. 
The average changeover time for the gripper system is low and takes less than 20 minutes, just limited 
to the fastening & unfastening of 6 screws. The robotic gripper technology is able to pick the workpiece 
and lay it down gently on a conveyor belt inclined at any angle to the ground. There is absolutely no 
damaged caused to the workpiece surface throughout the entire handling process. 
 
3 
 1 2 
 3 4 
 5 6 
7 8 
1.) Platen is closed. 2.) Moving Platen opens. 3.) Robot arm moves down to mould. 4.) Robot picks 
part from mold. 5.) Part moves out of mold. 6.) Short pause for safety signal triggering. 7.) Robot 
places part on conveyor, moving platen starts to close 8.) Moving platen closes mold. 
KUKA Offers Sequence Optimization To Reduce Part Removal Time To A Minimum 
 
4 
KUKA controller monitors and controls the movement of the platen sliding along the tie 
bars of the injection molding machine and optimizes the synchronization of robot arm 
cum workpiece movement , part ejection from the mold and the clamping platen movement, resulting in 
a much more consistent and faster injection molding cycle time compared to manual taking out of the 
workpiece which involves the safety gate to open and close whenever a part has to be removed as well 
as the longer and more variable mold open time. 
 
The amazing time-saving feature of the robot is that it is able to grip the workpiece laterally from the ver-
tical cavity for further cooling and processing, thereby allowing the machine to begin the next cycle shot 
(See process number 7 in page 3). Not only is the productivity increased, the robot also does the trick at 
a steady and consistent pace, maintaining a highly consistent injection molding cycle time for every shot, 
minimizing deviation on the material properties of every workpiece and thus maintaining the overall high 
quality of the workpieces produced by the machine. In short, very good repeatability results in quality 
assurance and extremely low reject rates. 
The shelf mounted robot provides a big action radius and offers space saving installation and cell con-
cept. In addition, the robot mounted above delivers vibration free de-molding above the moving platen 
with the safety gate closed and sets down in the direction of flow behind the machine. 
 
5 
The KUKA robot also supports the Euromap 67 interface for direct, standardized data connections 
between the robot controller and the injection molding machine controller. Compared to the single-
channel Euromap 12, the dual-channel Euromap 67 provides significantly better safety standards. The 
interface is preconfigured by means of hardware and is plug-and-play capable. 
Schematic of Euromap 67 compliant KUKA Robot