oscillating line - Kendrion Binder

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4 Definitions of terms used on data sheets Vibrating solenoids are electromagnetic systems that perform cyclic, sine wave-form oscillations. They function according to the principle of an oscillator with a pair of eccentric weights operating at the mains frequency. The oscillation frequency f is the frequency with which the device vibrates. In the normal case operating frequency = mains frequency. The maximum air gap amax of a vibrating solenoid is the average air gap occurring during operation at which the permissible temperature rise of the energisation coil is not exceeded. Vibrators are oscillating devices that are capable of vibrating irrespective of the installation position. The vibration amplitude s of a vibrating solenoid is the difference between the maximum and minimum sizes of the air gap during operation. Sprung amplitude, sprung component, sprung mass and sprung load relate to the part capable of oscillating with which a useful effect is achieved. Unsprung amplitude, unsprung component, unsprung mass and unsprung load relate to the part not capable of oscillating with which no useful effect is achieved. The optimum load for inline vibrators is the vibrating conveyor weight that permits the installation of a standard device. The rated power PS (rated input power) is the power consumption at rated current and rated air gap. Preferred voltages are the voltages of the standard devices, e.g. 230 VAC, 50 Hz. The reference coil temperature is the stabilised coil temperature in the non-energised state for the intended application. (This is important when vibrating devices are mounted on other devices with a temperature differing from the ambient temperature.) The insulation class specifies the maximum temperature for the insulation of the windings Class of protection designates the degree to which the device is protected against external influences, e.g. device IP 40, connection IP 64. Design directive the technical background Kendrion vibrating solenoids and vibrators are manufactured and tested according to DIN VDE 0580 (July 2000) “Provisions for electromagnetic devices”. The classes of protection are based on IEC 60529 and are specified on the data sheets. CE The electromagnetic products from Kendrion Magnettechnik are components for incorporation and operation in electrical equipment and devices. They therefore do not fall within the remit of the Low Voltage Directive 73/23/EEC. The user must ensure conformity with the EMC Directive 89/336/EEC by using corresponding switching devices or controls. When using the recommended Kendrion accessories, conformity with the EMC Directive is stated on the respective data sheets. Types Vibrating solenoids, vibratory drives OSR series (Fig. 1) Maintain operating air gap (1-3 mm) Vibrator The magnetic system of the vibrating solenoid is encapsulated in a plastic housing. It consists of two energisation coils and the two halves of the solenoid, the undersides of which are connected by a permanent magnet. The magnetic circuit is completed by the object to be vibrated, which represents the armature, via the air gap. If the object to be vibrated is made from a non-magnetic material, a corresponding armature plate must be included. The permanent magnet incorporated in the solenoid premagnetises the system and this creates a constant attraction between the solenoid and the armature. www.kendrionmt.com Armature plate Permanent magnet Vibrating element When an AC voltage is applied to the energisation coil, the force effect of the electromagnetic alternating field is superimposed on the force effect of the permanent magnet. The frequency of the resulting force matches the frequency of the AC voltage applied, which moves the armature in the same rhythm. In order to achieve the desired vibratory motion, the sprung load, i.e. the object to be vibrated, must be fixed to a base plate by rubbermetal connections, compression springs or leaf springs (see type OSR501002). Vibrators/Linear drives Types OLV504... (Fig. 2) Device socket Device plug Bearing Permanent magnet Coil Spring Mounting flange Armature The solenoid of the linear vibrator consists of a round steel housing. The energisation coil and the armature, which is guided concentrically via a non-magnetic shaft and held in the central position by two springs, are fitted inside the solenoid. A permanent magnet with guiding poles, which is located between the two energisation coils, pre-magnetises the system. The resulting forces acting on the armature are balanced by the arrangement of the guiding poles. When an AC voltage is applied to the energisation coil, the force effect of the electromagnetic alternating field is superimposed on the force effect of the permanent magnet. The frequency of the resulting force matches the frequency of the AC voltage applied, which moves the armature and the shaft in the same rhythm. The linear vibrator can be used as a vibratory drive and, fitted with an additional weight on the armature shaft, as a vibrator.
Inline vibrators Type OMW516002 (Fig. 3) Armature plate the technical background In the inline vibrator the solenoid and its energisation coil are fixed to a base. Mounted above this is the armature plate, with pole faces separated by an air gap and parallel with those of the solenoid. Leaf springs positioned at an angle (approx. 20°) connect the armature plate to the base. An attracting force prevails between the armature and solenoid. When an AC voltage is applied to the energisation coil, the force effect of the electromagnetic alternating field is superimposed on the force effect of the permanent magnet (type OMW516004). The frequency of the resulting force matches the frequency of the AC voltage applied, which moves the armature in the same rhythm. The angled arrangement of the leaf springs causes the armature plate, and the vibrating conveyor attached to this, to perform a curving oscillatory movement and therefore convey loose materials in one direction. In the case of larger or relatively wide vibrating conveyors it is better to use several smaller inline vibrators rather than a single large one. Curved motion vibrator Type OAB513001 (Fig. 4) Sprung component Unsprung component Leaf spring Base Solenoid (energisation coil + frame) The solenoid of the curved motion vibrator, fixed rigidly to the base of the device, consists of two annular shells which enclose the energisation coil. The armature, comprising two annular permanent magnets with opposite poles arranged axially and two pole discs in each case, is located between leaf springs fixed on opposite sides of the base of the device. The system is pre-magnetised by the two permanent magnets. In the stationary condition one annular pole of the solenoid is located between each pair of pole discs of the armature. When an AC voltage is applied to the energisation coil, the unlike poles of armature and solenoid attract. The frequency of the curving armature movement matches the frequency of the AC voltage applied. The curved motion vibrator can be used as a vibratory drive and, fitted with an additional weight on the armature shaft, as a vibrator. Fig. 4: Curved motion vibrator (OAB513001) 1 Solenoid 2 Energisation coil 3 Armature 4 Permanent magnet 5 Spring 6 Base Vibrating solenoids OAC... series (Fig. 5) Sprung load Sprung component Unsprung load Unsprung component Vibrating solenoid Vibrating solenoids are primarily incorporated in spring–mass systems that constantly exploit the resonant frequency proximity of the entire vibrating system (drive and sprung device). The vibrating solenoid generates directional, linear oscillations in the sprung device. Coil and bobbin are encapsulated in casting resin. They are therefore not susceptible to moisture and dust and thus suitable for rough conditions. The direction of the oscillations is achieved by the geometrical arrangement of the springs, which means that, for conveying, a certain oscillating angle is always necessary. The effective amplitude here corresponds to twice the amplitude of the oscillating frequency of the whole system. Vibrating solenoids can be infinitely regulated via the operating voltage. They reach the full conveying power immediately after being switched on and there are no troublesome imbalance effects upon starting and stopping. This is particularly important for metering, packaging, etc. www.kendrionmt.com Armature plate ∆L = air gap Tuning a) Explanation of symbols used fo fa = natural frequency = operating frequency = mains frequency Hz Hz c = spring constant N/mm cs = spring constant of rubber buffer in shearing direction N/mm d = spring thickness mm mF = weight of unsprung component mN of oscillator with 2 eccentric weights kg = weight of sprung component of oscillator with 2 eccentric weights kg mR = resultant weight mR = m . N mF mN + mF kg sF = vibration amplitude of unsprung mm component sN = vibration amplitude of sprung component mm s = total vibration amplitude s = sF + sN mm a = air gap mm 1N = 0.102 kg b) General All vibrators must be detuned for reasons of amplitude stability, i.e. the natural frequency fo of the device must not be equal to the operating frequency fa. As a rule, the detuning amounts to 10-20%. All vibrators used for conveying purposes must be tuned subcritically, i.e. the natural frequency fo of the system must be greater than the operating frequency fa. The resonance curve is damped by the loose materials being conveyed (Fig. 6). Both subcritical and supercritical tuning results in the amplitude being reduced from a (A) to b (B). Subcritical tuning Damped curve 1 Supercritical tuning Fig. 6: Vibration amplitude s plotted against the ratio of operating frequency fa to natural frequency f0. Notes: - to DIN VDE 0580 (July 2000) ICS29.020.53.020.01 (valid as manufacturer’s Declaration of Conformity) - directives 98/37/EC and 73/23/EEC - CCC certificate for China not required We reserve the right to make changes to the product design. 5
Page 1 and 2: BINDER conveying compacting sorting
Page 3: Type OMW516... Type OLV544... Type
Page 7 and 8: inline vibrators Type OMW516001 (24
Page 9 and 10: Dimensions (mm) linear vibrators 1
Page 11 and 12: Dimensions (mm) Type OAB513001 (25
Page 13 and 14: Preferred duty cycle100% duty cycle
Page 15 and 16: Types OMW 24 51604D00005 OMW 24 516

oscillating line - Kendrion Binder

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