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AssigneeIndustrie-Werke Karlsruhe Augsburg Aktiengesellschaft
InventorArtur Muller
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An apparatus for driving winding devices, such as bobbins and their associated thread guide changers at constant proportional speeds, particularly fiber and thread winders, comprises a drive motor which has a rotatable shaft with an armature winding and a commutator connected to said armature winding for direct current connection from a DC supply to the armature, and which also includes a plurality of slip rings connected to the armature so that a symmetrical polyphase alternating current voltage is applied to the rings during the operation of the motor. The motor shaft is adapted to be connected either to a friction roller for surface driving of a bobbin or directly to a bobbin shaft for rotating the bobbin shaft. A synchronous motor having a rotatable shaft is connected to rotate a thread guide or traverse system and it is powered by power supplied from the slip rings to the synchronous motor. During operation of the drive motor, the slip rings deliver AC voltage at a frequency which is directly proportional to the mechanical rotational speed of the drive motor shaft so that the traverse system is driven at a speed constantly proportional to the speed of rotation of the drive motor shaft. The method involves the use of a modified DC motor connected to supply an AC voltage at slip rings thereon during its operation and comprises rotating the motor to drive a winding shaft and connecting the slip rings of the motor to supply an output voltage to a synchronous motor to drive a second shaft at a constant proportional speed to the winding shaft.
An apparatus for driving winding devices, such as a device for winding thread on a bobbin using a thread traverse system for moving the thread backwardly and forwardly as the bobbin is revolved, comprising a drive motor having a rotatable shaft with an armature winding, a commutator connected to said armature winding for connecting the winding to a source of direct current and a plurality of slip rings connected to said armature winding so that a symmetrical polyphase alternating current voltage is produced at the rings during rotation of said shaft, means on said shaft for driving the bobbin, and a synchronous motor having a rotatable synchronous motor shaft connected to rotate the thread traverse system and being connected to said slip rings for receiving a polyphase alternating current output voltage from said drive motor which, during operation of said drive motor, has a frequency directly proportional to the mechanical rotational speed of said drive motor shaft whereby the traverse system is driven at a speed constantly proportional to the speed of rotation of said drive motor shaft.
A method for rotating a thread winding shaft at a constant rotational speed in proportion to a rotatable part of a thread traverse system, using a combined AC-DC motor generator device including an armature connected to a communtator for a DC connection and connected to a slip ring for an AC connection and using a seperate drive motor for the thread traverse system, comprising supplying alternatively and selectively AC or DC power to said combined AC-DC motor generator through the respective AC or DC connection, rotating the winding shaft by the combined AC-DC motor generator at a predetermined speed, generating a power at the connection which is not connected to the supply power, selecting a drive motor for the traverse system corresponding to the generated power, and delivering the generated power to the drive motor to drive the motor of said traverse system, at a speed in proportion to the power generated and in order to drive said traverse system at a speed proportional to the speed of rotation of said winding shaft.
Dependencies are inferred from the claim text.