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Before committing it to CLIMA, we would like feedback on the following: where should these type of functions go e. This comment has been minimized. Sign in to view. I suggest format to be defined in PlanetParameters and have a more descriptive name, e. Sign up for free to join this conversation on GitHub.
The counterpoint to this is a top-entry gantry robot, which frees up valuable floor space. If a six-axis robot were mounted on top of the machine, it would typically have to be oversized to allow the reach required to pick the part and move it all the way outside the machine to deposit it on a conveyor or pallet. This may be true for the robot itself, but this may not reflect the entire picture. What if the robot was entering the injection machine from the back side of the press rear gate opened?
The Difference between Cartesian, Six-Axis, and SCARA Robots
What if degating of the parts was required? What if you were running a high-temperature material, and the parts need to be cooled prior to an operator handling them? If you considered mounting the cobot on the operator side of the machine, that indeed might be a layout where guarding would be unnecessary. But think about what that would do to the molding cycle time. The robot would have to open the front gate, extract the parts, close the gate and the press would start the next cycle.
Although you would have more consistency than with an operator performing the same functions, this increase in cycle time would be very detrimental to overall production output. With industrial robots, when guarding is a concern, many times we simply utilize a conveyor package with integrated guarding.
The guarding would be attached to the conveyor, and the entire system could quickly and easily be rolled away from the press, to use on another work cell, or simply move away during mold changes.
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Control cabinets. Because Cartesian robot manufacturers understand that floor space is at such a premium in a molding shop, they have almost exclusively moved to mounting the control cabinets onthe robot traverse beam. Six-axis robots require a separate control cabinet that will require additional floor space. Features specific to the injection molding process. Gantry robot manufacturers have been working constantly to help make the molding process more efficient. We now have features such as Soft Torque, which allows the ejectors to push the arm back with assistance from the robot.
The robot monitors the force applied during this motion and applies a counterforce to move the arm back. With this feature, the robot will vary the part-removal position based on fluctuations in the clamp position. Robot layout configurations.
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- We are human not a Cartesian machine - Pathfinder?
Cartesian robot manufacturers offer a variety of mounting options to accommodate project needs and space constraints. Floor space becomes an increasingly hot commodity as more and more companies try to figure out ways to squeeze more machines into their plants.
One way to accomplish this is by setting up the robot to release the parts at the clamp end of the molding machine. This allows machines to be placed closer together. With this setup, it is easy to configure a gantry-style robot to traverse along the machine to drop the parts at the clamp end. On the other hand, this is almost impossible for a six-axis robot. To run these popular applications efficiently, robots must be equipped with two arms to extract the parts and runners between each set of plates. A single-arm six-axis robot would not be ideal for these applications, as it would dramatically impact the cycle time.
Of course, articulated-arm robot manufacturers have technical support. The main difference is that their personnel may not necessarily know the injection molding process and equipment. When calling support, it certainly must be helpful when supplier personnel understands common terms related to robot sequencing in molding applications—like core pull, screw recovery, air blast, cooling time and ejector sequencing.
Many issues that arise are related to the molding machine and robot interface. Again, gantry robot manufacturers understand how that interface functions. This allows them to quickly ascertain what the problem may be and whether it is robot- or machine-related. Some Cartesian robot manufacturers allow their robots to be integrated with the molding machines.
This integration allows the robot programs to be accessed and saved directly through the injection press controller. Also, remote diagnostics of both the machine and robot can easily be accomplished to determine where an issue may lie.
In conclusion, six-axis and collaborative robots definitely have a place in the plastics industry, but are not ideally suited to the removal of parts from molding machines. In almost 25 years of working with automation in the plastics industry, I have seen only a small number of companies utilize six-axis robots to remove parts from molding machines.
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Many of those same companies later switched back to Cartesian-style takeout robots. More often than not, I believe it makes sense to use Cartesian robots to remove parts and then use the other robot types in downstream and offline applications within the factory. That being said, do your homework to determine what is best for your requirements.
Jason Cornell has worked in the plastics injection molding industry for 25 years, specializing in robotics and automation. Contact: jason. Flashing of a part can occur for several reasons—from variations in the process or material to tooling trouble. One of the more prominent trends in processing is the need for higher plastic pressures to mold parts.
Over the past decade, soft-touch overmolding has radically changed the look, feel, and function of a broad range of consumer products.
Cartesian Point-to-Point travel PTP - Industry Mall - Siemens WW
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toolystaffing.com/wp-includes/xilec-track-iphone.php Cartesian robots save floor space by incorporating the control cabinet into the robot beam. Another special arrangement for Cartesian robots is this T-Mount configuration. Jason Cornell, Wittmann Battenfeld.