3D-printed holders enable cost-efficient conveying path

Definition of the task

A special machine manufacturer requires a system to feed car body parts to a robot cell. Different parts are to be conveyed, which the robot then removes and assembles. Some parts are 2000 mm long and 120 mm high, but only 2 mm wide. Other parts have similar dimensions but different geometries. The parts are to be fixed in holders for transportation. Ideally, it should be possible to use a uniform holder for all parts. In addition, the same number of parts are to be transported on each conveyor. The feed line must feed the parts to the robot with precise positioning and a cycle time of 30 seconds per part. At the same time, the feeder is to serve as a buffer section so that the robot can work autonomously for a while. The parts are to be fed manually onto the in-feed line. Process reliability is paramount in this project. The conveyors should also be low-maintenance and ergonomic for the workers.

Solution from mk

mk was able to score points here with a combination of several four-line timing belt conveyors. Customised product holders were screwed onto the timing belt conveyors. These are designed in such a way that the products can be inserted individually and fed without falling over. As the parts are inserted, the same take ups and therefore ultimately the same conveyors were able to be used for all four different geometries. This means that the customer is very flexible in terms of installation and handling. Up to 70 products per conveyor can be transported without sagging or falling. This means that the robot can work unattended for approximately 30 minutes. 2700 take ups were required for all conveyors. mk was able to manufacture these individually, quickly and cost-effectively using its in-house 3D printers. During the solution-finding phase, mk was able to produce prototypes of the take ups so that they could be tested before the final design.

Benefits for the customer

• Customised, cost-effective solution tailored to customer requirements
• Realisation of special holders thanks to additive manufacturing simplifies the feeding concept
• Competent advice and information for the customer throughout the entire design process

Products used

> Timing belt conveyor ZRF-P 2040
> 3D printed parts