Lomont Molding LLC

Robot-Guided Injection Molding


Plastic robotic injection molding automates the injection molding process by using a pick-and-place robot to load plastic parts into the molding machine, as well as place the finished products onto a conveyer belt. Through this automated process, the robot is able to efficiently and accurately create injection-molded pieces.

Contact us for more information on how our robot-guided injection molding process can provide you the best quality plastic profiles, or request a quote today.

With injection molding projects, producing high quality, accurately cut, formed and measured molding pieces is very important. Human-operated injection molding leaves room for variation, but utilizing automated techniques leads to more flexible and precise production. This means your plastic molding will be your desired specifications and quality each and every time. This process is creating new and exciting opportunities within the Plastics industry.

Traditional Injection Molding Vs. Automated Injection Molding

In traditional injection molding, plastic resin is conveyed into an injection molding machine, where it is gradually melted. When the plastic becomes liquid, it is pushed through a nozzle into a mold where appropriate pressure is applied until the cooling time elapses. Then, the mold is opened, and an operator  removes the part and places it on a conveyor belt. This process is then repeated over again.

With automated injection molding, however, the repetitive process is granted to robots, leaving the operators to focus on complex tasks and inspection. The production and the assembly of plastic molding can be done quicker and for reduced costs.

The Robotic Injection Molding Process:

  1. A pick-and-place pedestal robot conveys thermoplastic material into the hopper of the injection molding machine.
  2. The hopper moves the resin into the heating barrel where the plastic is melted to a predetermined temperature, similar to the traditional process.
  3. Once the plastic is melted, a screw pushes the material into the mold and applies pressure until the plastic cools and hardens.
  4. The mold is opened, and the 5-axis robot removes the new plastic part and places it on the conveyer belt.
  5. The robot quickly repeats this process, producing parts with little to no variation between them.

Advantages of Injection Molding Robotics

At Lomont, we believe that automation is the key to ensuring our customers a competitive price while still being able to deliver a quality product. In order to fully satisfy our customers, we utilize robot-guided injection molding for many of our industrial projects. Injection molding robotics in the Plastics industry provide numerous application advantages including:

  • Consistency in part quality
  • Reduced costs in regard to molding, labor, and parts
  • Reduced part variations, which in return reduces waste and increases yields
  • Increased machine utilization and more consistent cycle times, creating a quicker and more efficient molding process
  • Increased productivity and efficiency
  • Increased flexibility

Application Capabilities of Robot-Guided Injection Molding

Plastic injection molding is prevalent in many industries, but particularly automotive, medical, industrial, and electronics. Automated injection molding provides several opportunities for industrial applications in both upstream and downstream operations for these, and many more, industries. Some possibilities for the robotics are:

Automated Robotic Injection Molding at Lomont

The integration of Robotics into plastics manufacturing has been occurring at Lomont Molding LLC (Lomont) since 1987. Starting with the basic picking robotics, Lomont has advanced to large pedestal models that can now carry out complex tasks with enhanced accuracy in the largest tonnage machines. Because we utilize our automation system so effectively, we can process your orders faster and more accurately, allowing for critical order fulfillment that is key to your inventory requirements.

Contact us for more information on how our robot-guided injection molding process can provide you the best quality plastic profiles, or request a quote today.