You produce components for the automotive sector? Then ARBURG is the expert partner for you. See here how you can produce high-strength lightweight parts, create hard/soft combinations, cost-effectively overmold small batch parts or perform foaming within an injection molding cycle.
Turnkey system with two interlinked multi-axis robots
One highlight of the Technology Days 2022 was an ARBURG turnkey system from our customer Oehme. The centerpiece of the system is an ALLROUNDER 1200 T, in which two robots interact with the mold of the rotary table machine in a coordinated manner: One removes the finished parts and inserts metal shafts. The shafts are prepared in the correct position in the turning station and inserted into the mold at the cavity distance. The other robot removes the sprues from the mold and inserts bushings. In a cycle time of 33 seconds, two levers are created, which are then conveyed into an automated deposit system.
FIM technology for ‘smart’ component surfaces
The night light example shows how multi-functional surfaces can be produced using Film Insert Moulding (FIM). This process is ideal for high-quality touch functions for digitalization, for example, in car interiors as well as the electronics industry, white goods and medical technology.
The pre-formed 3D films with integrated electronic functions and five LEDs are fed from the trays from outside. The films are cleaned beforehand under controlled production conditions, in-mold laminated and their electronic function is checked one hundred percent in the clean room cell around an electric injection molding machine ALLROUNDER 470 A.
Functional part in a single step
The cost-effective manufacture of functional components in a single step is a domain of plastics processing. Thumb wheels for passenger car interiors are a good example: Thanks to a targeted combination of materials, high-quality plastic parts with a soft-touch surface are produced.
The thumb wheels can be produced in a fully automatic process sequence on a hydraulic three-component ALLROUNDER 570 S injection molding machine. This enables efficient high-volume production of these sophisticated functional components. Initially, the translucent main body is produced from PC, then an electroplateable visible surface is added in ABS before a third, attractively tactile TPE component is injected.
LSR coupling cushion
Liquid silicone compensates for curvature: thanks to an LSR coupling cushion, a rain/light sensor can be optimally attached to a car windscreen. A multi-component machine molds a low-viscosity liquid silicone (5 Shore A) onto a PBT frame, in which the sensors are inserted.
The production of hard-soft combinations with a silicone component represents a significant challenge in terms of machine and mold technology because thermal isolation is required within the mold. The coupling cushion is produced from PBT and LSR on a fully-electric two-component ALLROUNDER 570 A with a clamping force of 225 tons. The four pre-molded parts and four finished components with a part weight of 4.53 g are produced in a cycle time of 38 s.
Foaming within the injection molding cycle
As a main contractor, ARBURG has, jointly with its partner Sonderhoff, developed the inline MOLD’n SEAL process, which combines injection molding with subsequent PUR foaming. This allows you to save time, costs and space, as well as significantly increasing your production efficiency.
A six-axis robotic system removes the still-warm housing covers from a hydraulic ALLROUNDER 570 S injection molding machine and moves the seal contour under a foam dosage unit, which applies the foam seal. No intermediate storage is required and the curing time is reduced significantly.
to the molded part
Manual filter production
A vertical ALLROUNDER 375 V injection molding machine shows how fuel tank strainers can be produced cost-effectively and to high quality standards in small batch volumes by integrating manual operations and using innovative working methods. A total of seven production steps take place within a total cycle time of 50 s.
The strainers are produced extremely flexibly to a very high level of quality in unit volumes of up to 3,000. The machine and operator are both used to full capacity. In a cycle time of around 35 s, the upper and a lower sections of the filter are injection molded while the two parts from the previous cycle are joined mechanically. The operator simultaneously performs finishing operations, including assembly of the finished component. In this manner, approx. 85 units are produced per hour.