Rhein - Nadel Automation GmbH
5
14.04.2014
Bowl feeder VT-BA-SRC63-100-GB
Attention:
Since the electromaget-field may have an impact on persons arrying pacemakers it is recommended to
keep a minimum distance of 25 cm.
Noise emission
The noise level at the place of operation depends on the total equipment and the material to be sorted. The
determination of the noise level according to the EC-Regulations "Machinery" can therefore only be carried
out at the place of operation.
If the noise level at the place of operation exceeds the limit permitted, noise protection hoods may be used,
which we offer as accessory parts (see catalogue).
Standards and regulations
The device was built according to the following standards and regulations:
Low voltage directive 2014/35/EU
EMC directive 2014/30/EU
We assume that our product is to be
integrated in a fixed machine. The provisions of the EMC directive 2014/30/EU has to be considered by the
user.
Applied harmonized Standards
EN 60204, T.1
3 Construction and function of the
vibratory bowl feeder
Vibratory bowl feeders are used for the actuation of sorting machines. The actuation takes place by electro-
magnets. The following schematic diagram shows the function of a vibratory bowl feeder:
The drive magnet D is firmly connected with the counter-mass F. When current passes the drive magnet, it
exerts power on armature E. The power is transmitted to bowl A, which is supported by the spring assembly
C. The moving direction of the bowl is determined by the angle of the spring assemblies.
Owing to the vibrations the material to be conveyed is shortly lifted off the conveyor belt (helix of the bowl)
and it carries out little jumps (microjumps). The jump direction is in a right angle to the level of the spring
assemblies.
The drive magnet achieves its maximum magnetic force twice during a period of the alternating current. Con-
sequently the vibration frequency corresponds to the double mains frequency.
For heavy sorting installations a lower frequency of 50 Hz can be more advantageous.
The vibration frequency of your vibratory bowl feeder results from the last figure of the type designation:
-2:
100 Hz - 6000 vibrations/min.
A = Bowl
B = Material to be conveyed
C = Spring assembly
D = Drive magnet
E = Armature
F = Counter-mass
G = Vibration buffers
