Custom Robot Solutions for Stack Mold Applications Enable Fast Cycle Times

Wittman USA, a manufacturer of injection molding machines, robots, auxiliary equipment and more, has developed a leading-edge custom robot solution targeting stack mold applications. By incorporating dual high-speed top-entry robots, this type of cell enables fast cycle times, low payload requirements and flexible process flow.

When looking at stack mold applications, molders normally opt for a dual vertical arm robot to provide automated part handling. However, the issues with dual vertical arm top-entry robots are the speed and payload needed for such applications.

The standard Wittmann high-speed robots can be mounted to run even the most complex stack mold applications according to the company. These cells can normally offer cycle times of 7-12+ sec, without requiring special robots or causing abnormal wear and tear on dual vertical arm robots, which is the case for robots not designed for quicker cycles.

The cell also provides flexibility, as it can also be designed with different mounting stands to enable smaller footprints, integrated conveyor systems or other downstream equipment needed for pre- or post-molding automation. The robots can be programmed to work together or can run individually; one robot can be used when standard two-plate molds are run in the same machine.