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AssigneeN.V. Michel Van de Wiele
InventorStefaan Vanheesbeke
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Device for energising a number of coils (1) of a hook selection device for a weaving machine, comprising an electrical power supply source (V1) connected to the coils (1) and a regulating device for regulating the current intensity in the coils, comprising for each coil: a comparator (3) for comparing the current intensity in the coil (1) to a reference current intensity, and a controllable current regulator (e.g. a chopper transistor (M1)) provided for regulating the current intensity in the coil (1) in order to reach or approach this reference current intensity, whereas said regulating device comprises an electronic control circuit (2a, 2b) that is provided to control the current regulator (M1) of each coil (1) of a number of coils, in order to reduce a variance between the actual current intensity in that coil (1) and the reference current intensity measured by the comparator (3) of that coil (1).
Device for energising a number of solenoids (1) of a hook selection device for a weaving machine, comprising an electrical power supply source (V1) connected to the solenoids (1) and a regulating device for regulating the current intensity in the solenoids characterised in that per solenoid the regulating device comprises:
Device for energising a number of solenoids of a hook selection device for a weaving machine, according to any of the preceding claims characterised in that the electronic control circuit is provided in order to determine the reference current.
Device for energising a number of solenoids of a hook selection device for a weaving machine, according to any of the preceding claims characterised in that the electronic control circuit is provided in order to control means for generating a reference current so that in a first phase of the energising of the solenoids a higher reference current is generated than in a subsequent second phase.
Device for energising a number of solenoids of a hook selection device for a weaving machine, according to any of the preceding claims characterised in that the means for generating a reference current comprise a pulse width modulator.
Device for energising a number of solenoids of a hook selection device for a weaving machine, according to any of the preceding claims characterised in that parallel to each solenoid (1) a diode (D1) is provided, and that the current intensity is determined by the solenoid by means of a sensor resistance (R1).
Device for energising a number of solenoids of a hook selection device for a weaving machine, according to any of the preceding claims characterised in that apart from the electronic control circuit (2a, 2b), the regulating device only comprises the following discrete components per solenoid (1):
Device for energising a number of solenoids of a hook selection device for a weaving machine, according to any of the preceding claims characterised in that the electronic control circuit is or comprises an integrated circuit.
Device for energising a number of solenoids of a hook selection device for a weaving machine, according to any of the preceding claims characterised in that the electronic power supply source (V1) to which the solenoid (1) is connected is a mains transformer with bridge rectifier.
Device for energising a number of solenoids of a hook selection device for a weaving machine, according to any of the preceding claims characterised in that the electronic power supply source (V1) is a power supply source with an invariable voltage.
Device for energising a number of solenoids of a hook selection device for a weaving machine, according to any of the preceding claims characterised in that the electronic control circuit (2a, 2b) comprises digital components.
Hook selection device for a weaving machine, comprising a number of solenoids, characterised in that it comprises at least one device for energising solenoids (1) according to any of the preceding claims.
Dependencies are inferred from the claim text.