Take-up machine motor control
First Claim
1. In a take-up machine of the type for winding fiber and yarn on spools and tubes with said take-up machine comprising a rotating spindle for receiving tubes and spools, an AC electric motor coupled to said spindle for rotating said spindle, and a tension take-up mechanism for controlling the speed of said electric motor in accordance with tension on fiber and yarn being wound;
- the improvement comprising said motor having plural windings, said windings being connected to a rectifier circuit, solid state control means for controlling current flow through said rectifier circuit and thereby current flow through each of said motor windings down to zero, said solid state control means including a linearly movable control element connected to said tension take-up mechanism for positioning thereby.
1 Assignment
0 Petitions
Accused Products
Abstract
This invention relates to a take-up machine utilized in conjunction with the production of fiber or yarn wherein the product fiber or yarn, as it is produced, is wound onto spools or tubes. A control is provided for varying the speed of an electric motor which drives a spindle on which the tube or spool is mounted. This control is actuated by the position of a compensator arm which is connected to a core of a linear voltage differential transformer which, in turn, controls current flow through an NPN power transistor. The power transistor, in turn, controls current flow through a rectifier having one circuit for each of three windings of a three-phase AC motor, thereby controlling the speed of rotation of the motor.
-
Citations
18 Claims
-
1. In a take-up machine of the type for winding fiber and yarn on spools and tubes with said take-up machine comprising a rotating spindle for receiving tubes and spools, an AC electric motor coupled to said spindle for rotating said spindle, and a tension take-up mechanism for controlling the speed of said electric motor in accordance with tension on fiber and yarn being wound;
- the improvement comprising said motor having plural windings, said windings being connected to a rectifier circuit, solid state control means for controlling current flow through said rectifier circuit and thereby current flow through each of said motor windings down to zero, said solid state control means including a linearly movable control element connected to said tension take-up mechanism for positioning thereby.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
Specification