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Keywords of this article:  injection molding 
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CHINAPLAS 
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Two duo injection molding machines produce LED lenses at the show.
Two duo injection molding machines produce LED lenses at the show.
Photo: 12

Engel is presenting a number of exciting applications and technology solutions to demonstrate how innovative injection molding technologies help build competitive advantage and secure future viability.

For the first time, Engel demonstrates at CHINAPLAS a complex multi-component process with interlinked injection molding machines. Two duo injection molding machines will be producing at the show LED lenses made of PMMA with a thickness of 22 mm for vehicle headlamps.

The lens base bodies are produced on a duo 1060/400 injection molding machine in a 4-cavity mold. An easix articulated robot is integrated in the production cell and removes the four parts and passes them to an external cooling station. From there the robot takes four already sufficiently cooled preforms at a time and transfers them to the 4+4-cavity mold of the duo 600H/600H/500 combi multi-component machine with rotary table.

There, two more PMMA layers are applied successively before easix removes the finished lenses. The cycle time is significantly lower than 3 minutes, although the preforms take around 30 minutes to cool. The cooling time can be controlled via the number of cooling positions in the external cooling station.

Engel is presenting the exhibits jointly with system partners, including Skymold (China), HRSflow (Italy), Innolite (Germany), Opsira (Germany) and Gimatic (China).

An Expert Corner at its booth is dedicated to composite technologies. As electric vehicles production is on the rise and liquid silicone rubber (LSR) is used increasingly in China, the company produces wire grommets made of LSR for individual wires with a corresponding fine structure. A tie-bar-less e-victory 50/80 injection molding machine with electric injection unit is used to process the extremely low-viscosity LSR with high precision and high efficiency.

On the Engel tie-bar-less injection molding machines, the patented force-divider ensures that the moving mold mounting platen follows the mold exactly while the clamping force is building up distributing the clamping force evenly across the platen face.

Engel is also presenting LSR processing with its partner Elmet Elastomere Produktions- und Dienstleistungs GmbH (Austria). In this application, the 4-cavity mold and the LSR dosing system, which can be integrated in the CC300 control of the e-victory machine, come from Elmet.

Another premiere is in medical, for which Engel presents a highly integrated production cell for manufacturing pipette tips under cleanroom conditions. This exhibit is the result of cooperation between Europe and China.

Engel, Waldorf Technik (Germany) and Wellmei Mold (China) have combined their know-how and experience with medical precision parts and tailored the system solution exactly to the specific requirements of the Chinese processors.

To achieve a stable process and high economic efficiency, the system partners integrate a tie-bar-less e-victory injection molding machine from Engel with a 32-cavity hot runner precision mold from Wellmei and high-speed automation from Waldorf Technik in an extremely compact space.

Meanwhile, the automation solution developed by Waldorf Technik removes 32 pipette tips from the mold in sync with the injection molding process and loads groups of 96 pipette tips, sorted by cavity, into racks. Every 18 seconds, 96 pipette tips are discharged from the production cell, which is enclosed to create a cleanroom environment.

In addition, a Sawyer collaborative robot from Rethink Robotics (USA) retrieves the loaded racks at the end of the production process.

Under the name of inject 4.0, Engel already offers a series of mature products and solutions for digitalizing and networking injection molding production.

It is demonstrating the great potential of the inject 4.0 solutions in the production of inject 4.0 logos on a tie-bar-less and fully electric e-motion 80 TL injection molding machine.

Booth: 5.1E71

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