Industries & References
RNA's product range is tailored to the requirements of all industries: from oily environments in the screw industry to clean room conditions in the pharmaceutical industry. RNA feeders meet all the specific requirements of each industry and give our customers the competitive edge with their own equipment. Our technical experts and our service ensure that our plants provide their service reliably and economically for many years.
The feeding of cams in defined position for the grinding process
Filled KLT container is placed in a tipping device. By opening the base plate, cams are dispensed into a belt hopper, which transfers the parts in a regulated manner over two further bridging conveyors to a linear sorting system. This is followed by direct transfer to an accumulating vibration feeder, at the end of which the cams are separated. A reversing conveyor enables the system to be emptied quickly for a type change.
Correct feeding of pump blades into a grinding wheel
Regulated feeding of the parts over a vibration feeder (bowl feeder) to a two-track, linear sliding sorting system and transfer to an accumulating track. Return of the unsorted parts to the vibration feeder (bowl feeder). The entire parts circulation is particularly gentle on the parts. The patented sliding sorting system enables sorting according to the finest feature (edge).
A sensor-controlled hopper system conveys the plastic caps, depending on the fill level, into a bowl feeder, from where the parts are sorted and finally conveyed via an outlet to an accumulating track. The parts are sorted by surfaces on the cap head.
reproducible, standardised feeding system
Pre-designed bowl feeders, which are manufactured using the 3D printing process. The bowl feeders are intended for standard parts, such as cylindrical pins, balls, O-rings and smaller screws. These can be delivered at short notice, as the design is already finished.
Metal parts for car keys
These bowl feeders were also produced in 3D printing for customised workpieces. Advantage if a bowl feeder is needed several times.
Digital Twin, feeding technology of the latest generation
The feeding system is digitalised and fully simulated before construction. The simulation shows the running behaviour and the functioning of the sorting system.
A standardised bowl feeder has been coupled with an accumulating track and hopper system. This is how we match our standardised sorting solutions with your specific requirements.
Linear, 1-track high-performance system. The high performance can be achieved by multi-track pre-sorting and subsequent converging of the pre-sorting tracks.
Silicone rubber seals
The FlexTypeP series are pre-configured and pre-assembled flexible vibration platforms which are already adjusted to the workpiece. The final commissioning with a robot is up to our customer.
Position correct sorting and supply of drip chambers for medical technology
The drip chambers are pre-sorted in the bowl feeder by hanging on the rubber ring and run on an accumulating track. The parts are finally sorted on the accumulating track. The final sorting is done by a turning device which causes the nipple of the drip chambers to be turned by a stop in the desired direction.
Damage-free sorting and supply of plastic thread inserts for medical technology
Linear, 6-track sorting with patented linear sliding feeder technology. Protection of the side surfaces by exclusively guiding the parts on the bottom surface. System completely encapsulated with noise protection and in pharmaceutical design.
|50 pcs./min./track (clocked), total performance: 300 pcs./min.|
Protective tubes for syringes
Linear, 10-track sorting with patented linear sliding feeder technology. Special feature that the sorting can be exchanged without tools. Pharmaceutical design.
|60 pcs./min./track (clocked), total performance: 600 pcs./min.|
Linear feeding system with integrated robot
Due to the non-accumulating workpieces, the FlexType R system type was chosen. High feeding capacity due to targeted linear pre-sorting, several variants can be fed without a changeover process.
2-track sorting of the workpieces in the bowl feeder via the centre of gravity with sorting air. The workpieces are fed into an 8-fold separation via a discharge track. The supply of 8 workpieces takes place every 8 seconds.
|60 pcs./min., total performance: 120 pcs./min.|
Sorting and transferring capacitors in the correct position
Via a hopper system, capacitors enter a bowl feeder to be sorted and separated. The discharge tracks are rotated by 90° so that the parts arrive in the correct position on two accumulating tracks. A suction system simultaneously transfers a workpiece from each track to the customer system.
Sorting and preparation of 30 types of housings of different sizes and shapes.
The parts are pre-sorted on the tracks of the bowl feeder. On a conveyor integrated into the bowl feeder, the final sorting into the desired parts position is carried out via an air nozzle control. The valves are controlled by the PLC depending on the type. On the downstream accumulating track, the guide channel is automatically adapted to the respective part width.
|50 pcs./min. (clocked)|
Linear feeding system for approx. 40 different variants. Here, mechanical sorting is supplemented with sorting by means of a vision sensor in order to feed the large number of variants with almost no set-up. In order to be able to achieve the high customer cycle, 2 tracks are used for sorting, which alternately distribute the workpieces onto one track with a shift function.
Linear feeding system with sorting on 4 tracks. The sorting is made almost completely without manual work from milled parts or laser parts. The bowl feeder is completely printed and is only used for dosing for the linear accumulating track.
The workpieces are fed via a dosing hopper onto a FlexCube, which roughly pre-aligns the workpieces. A camera system detects the position of the workpieces and a robot removes the workpieces in the correct position and places them in a customer's indexing device for quality inspection.
Knobs for fuse boxes
Linear feeding system with sorting on 4 tracks. The sorting is completely manufactured (without manual work) from milled parts and laser parts. The bowl feeder is 3D printed and is only used for rough pre-sorting and dosing on the linear sorting.
Sorting and storage correct transfer of brush bodies
The brush bodies are fed from a hopper system into a bowl feeder. The parts are separated in the bowl feeder and sorted by hanging on the accumulating track. After the accumulating track, a gripper simultaneously transfers two parts to the customer system.
Linear, 6-track feeding system. The workpieces reach a pre-sorting unit via a transverse distribution unit, where they are pre-sorted in a longitudinal position. A final sorting unit sorts the workpieces by running them underneath from the side. At the end, the workpieces reach the accumulating track.
|110 pcs./min./track, total performance: 660 pcs./min.|
The pre-sorting of the spray caps takes place in the bowl feeder. The parts hanging upside down are rotated by 90° in a 2-track grid guide before all parts are brought together on one track and rotated by a further 90° (180° rotation in total). Final sorting takes place on a conveyor and the spray caps are transferred to the customer system. During final sorting, parts in the wrong position are guided back into the bowl feeder by a return system.
Directional supply of mustard sachets and wooden skewers on a conveyor belt for take-over by the customer with robot gripper
Multi-track sorting on linear tracks with repeated parts circulation of unsorted parts and parts not taken over by the robot via the supply hopper.
Wooden chip tins
By means of a camera system, deviations in shape and damage to the parts are detected and rejected. Loose impurities in the wooden cans are separated by an open torsion cage on a linear feeder.
|85 parts/min. (clocked)|
Lids for chip tins
The lids are fed into a centrifuge via a hopper system with a filling volume of 350 litres. This sorts the lids in their position by means of sorting air. A sensor at the beginning of the accumulating track checks whether all workpieces have been sorted in the correct position and rejects any incorrectly sorted workpieces back into the hopper.
Outer sealing rings
Feeding of outer sealing rings with high capacity
In a bowl feeder, the sealing rings are transferred lying flat into a geometrically uniform transfer opening and blown from there into an air track. If the transfer station is overfilled, a light barrier sends a signal to the control system to blow out the station.
Sorting and supplying of 30 types of nozzles
Sorting on a 5-track linear track and merging of the tracks onto a supply track. The unsorted parts are returned to the hopper outside the production line via a suction hose. An ionisation system ensures sorting even when parts are statically charged. Short changeover times due to changeover of the sorting track within seconds, complete system in compact design.
|550 pcs./min., total performance: 2750 pcs./min.|
Linear sorting with 4 tracks for pre-sorting to achieve high feed rates. After distribution to 4 sorting tracks, the workpieces are sorted via the outer contour and turned into the exit position in a turning channel. Afterwards, all 4 tracks converge on one track and enter the feeding system outlet.
Linear, 6-track feeding system. The workpieces reach a pre-sorting unit via a cross-distribution unit, where they are "turned over" once. The final sorting is done via the centre of gravity of the workpieces.
|110 pcs./min./track, total performance: 660 pcs./min.|
Metal part for washing machine
The workpieces enter the bowl feeder via the hopper system. In the bowl feeder, the workpieces are pre-sorted into an upright position. As the workpiece is not symmetrical, 2 positions are still possible. The position is detected in the separating station with a simple sensor so that the workpiece can be turned.
Joining technology, furniture and screw industry
Sorting and supplying of furniture fittings
From a hopper, the fittings are transferred to an incline feeder which transfers the parts to a bowl feeder. The parts are pre-separated there. The fittings are pre-sorted on a linear track and then transported forward on a conveyor in the correct position for the robot. The robot system works in a delimited area of the conveyor and places the workpieces in the correct position in a 4-fold loading plate or in one of the two storage places in order to be able to fall back on them if the supply is reduced for a short time. Furthermore, the storage places serve to temporarily store the workpieces when the nest is occupied.
|80 pcs./min. (6-axis robot), 105 pcs./min. (4-axis robot)|
Storage-orientated provision of 6 fittings for the assembly process.
The separations of the feeding systems are arranged in a line to each other at the end of the respective accumulating track. The arrangement of the parts supply enables the customer-side gantry gripper to take over the component to be assembled in the shortest possible cycle times.
Standardised bowl feeder for discs
The workpieces run under a guide at the sorting station.
Standardised bowl feeder for screws
The workpieces hang in the sorting station with the thread facing downwards. An air nozzle ensures that no false positioned parts enter the bowl feeder outlet.
Standardised bowl feeder for screws
The workpieces hang in the sorting station with the thread facing downwards. An air nozzle ensures that no false positioned parts enter the bowl feeder outlet. A separating/blow feeder unit at the end of the bowl feeder can blow the workpieces in a hose up to 15 metres. Eine Vereinzelungs/Zuschießstation am Ende des Sortiertopfes kann die Werkstücke in einem Schlauch bis 15 Meter zuschießen.