Collaborating robots in the plastics industry – technocrat

They are characterized by the ability to work in tight production areas, in close proximity to people, as well as for quick execution and reallocation to new tasks, as well as intuitive programming and management. They support pick and place and palletizing processes for both large and small companies.

Manufacturers around the world are investing in automation. It also covers companies operating in the polymer industry in Hungary in the spring of 2020 “SME robotization barometer” survey showed that SMEs expect, among other things, robotisation to enable them to reduce production costs, thereby improving their efficiency (72%), increasing competitiveness (71.4%) and increasing the volume of products produced; (68.7%), which is more important for small businesses. In addition, it is important for companies to eliminate human error (61.3%), retain employees (63.9%), and improve product quality (56.6%) and production flexibility (54.6%).

The use of cooperating robots can reduce workers’ exposure to harmful gases, dust and plastic chips from the production of plastics and polymers. Kobots are also suitable for handling sharp and hot objects. The ability to work 24 hours a day and the repetitive range of motion with an accuracy of 0.03 mm (for Universal Robots) allow companies to make the most of their production capacity while maintaining consistent quality. The lightweight design and small size make the kobots suitable for working in smaller work areas.

Applications

Kobots allow for almost complete automation of plastic injection molding applications. They guarantee consistently high quality, accuracy and constant dosing even after many repetitions. Collaborating robots increase process accuracy and reduce waste. They are excellent in machine service, CNC lathes, injection molding machines, edge presses or presses. Their application has a positive effect on speed and quality, while minimizing the risk of injuries associated with working with heavy machinery. Depending on your individual needs, the company may use kobots with different end effectors or monitoring systems at different stages of production, e.g. when assembling small electronic components that require high sensitivity. The finishing stage is also very important, the kobots can work with different materials, maintaining the required parameters and ensuring the high, consistent quality of the final product.

Application of kobots in different market areas

The Czech 2K Trend, which manufactures high-precision injection-molded plastic parts for large car manufacturers, introduced the UR10 kobot to manage the entire production cycle, optimizing production and also solving the problem of labor shortages. The UR10 cooperating robot picks up and molds the plastic pellets and then begins the injection molding cycle. At the end of the cycle, the kobot removes the finished castings, which are then placed on the conveyor belt. It’s a monotonous activity that requires exceptional precision in handling finished plastic castings, so it’s perfect for robotics. The UR10 kobot can operate the entire machine virtually independently, so there is no need to involve human workers in this process. It also has the advantage of a wide operating range of the UR10 lever, which makes the entire machine very efficient.

A Dynamic Group installed three UR robots for injection molding and packaging tasks. The first robot performs the entire machine cycle; selects and places frames that hold the pieces to be molded into the injection molding machine, transports the units to a cutting assembly, places the part in front of the operator for further machining, and finally presses a button to reactivate the cycle. The second injection molding application uses a conventional rectangular robot that throws a mold piece onto the transport chute where the UR robot picks it up and places it in a degreasing device and then places the part on a pallet on a table in front of the operator for inspection. The third robot was installed for the packaging processes.

“In my opinion, compared to traditional robots, UR robots are much easier to train and program from drag and drop applications. The robot can also be programmed with the “Teach Mode” option, in which we simply grab the robot’s arm, move it where we want it, allowing the robot to memorize the point. Once the points have been determined, the robot will replay these movements after starting. ”

Says Joe Mcgillivray, CEO of Dynamic Group.

The various case studies describing the use of kobots illustrate the versatility of the solutions. Thanks to its ease of programming and use, the kobot is a tool that can help companies grow faster and compete more effectively in the hands of technology-open operators. More information on the use of cobots in the processing of plastics and polymers can be found in the e-book:

HU: ttps://www.universal-robots.com/hu/industry/


Source: technokrata by www.technokrata.hu.

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