Maintenance-free pivot arm mounted in joining station

Profile

Produtek Weiskopf's injection moulding machine

What was needed: Plain bearings for the joints of the swivel arm between two injection moulding machines
Requirements: Maintenance-free, low backlash, long service life
Industry: Plastics machines, injection moulding machines

The company Produtek Weiskopf uses two side-by-side injection moulding machines in which plastic parts are injection moulded from three components. A joining station is located between the two machines. Here, the second component, a viewing window, is inserted into the basic component from the first machine. The assembled parts are then transported onto a cooling belt and from there to the second injection moulding machine, where the third, soft component is injected.

Problem

A swivel arm is used to attach the viewing window to the base component in the joining station. The challenge here: As the freshly injection-moulded plastic parts are always slightly different, it is necessary to adjust the joining position. Produtek has managed to dispense with a highly complicated joining mechanism by using a simple plug-in design and adjustable adjusting rings. For the swivel arm, the search was on for a suitable bearing that would allow smooth movement, last a long time and ideally require no maintenance.

Solution

plastic plain bearings with flange made of iglidur® X material are ideal for this application. The material is a true all-rounder that covers the most diverse requirements. The bearing works best at medium loads, sliding speeds and temperatures, has a very good coefficient of friction and is resistant to dirt and dust. Like all our plastic bearings, no additional lubrication is required thanks to the solid lubricants contained in the material, thus saving the usual maintenance effort.

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