Robotics systems have been widely used in automotive manufacturing for many years. In other sectors of industry, however, high capital costs and system complexities have restricted the uptake of robotics equipment, especially in applications such as pack erection and container and pallet handling. In this issue’s Automation spotlight, Andy Parker-Bates of UK-based automation equipment manufacturer Parker Hannifin explains how the latest technology can help reduce operating costs and improve productivity.
There is a new generation of palletising and gantry robots that are available at relatively low cost and, just as importantly, are designed around standard or modular drive and automation components, making them easy to customise to meet the needs of each application. Typically these come as a kit of parts, based on the latest modular drives, linear actuator, rotary stages, digital servo drives and programmable controllers, but can be supplied pre-assembled. Critically, because they come from a single supplier there is only one procurement procedure—assembly is straightforward and performance is guaranteed.
These systems are easy to configure, install and test, and can usually be reconfigured quickly and simply by maintenance or engineering staff, making them particularly suitable for use in small to medium volume applications with frequent product changeovers. Additionally, such systems are now available at relatively low capital cost and are typically inexpensive to operate and maintain. Indeed, it is common for such devices to be making a return on investment within weeks.
Linear actuators generally form the heart of most line and space gantries and palletising systems and are used to move and position grippers or suction pads, for lifting products or trays into position. A broad range of drive methods, including belt drives, screw drives and linear motors are available to provide benefits for different applications. Furthermore, when coupled with servos and controllers, sophisticated motion sequences can be developed, with superior positional accuracy, high speeds, controlled acceleration and braking and large load capacities being options.
Significantly, training is usually a low key affair, often being carried out on-site and little more than a familiarisation process. And with the backing of Parker Hannifin, great expertise is on tap for needs such as major developments and programming for entirely new product lines.
