Process and apparatus for production and quality control in multi-spindle textile machines
AssigneeZellweger Uster AG
InventorErnst Felix
Life of this patent
Estimating the term…
Abstract
A common monitoring system with a light beam is provided for a group of two or more production units arranged in a row. The beam passes through the thread balloon formed by the moving thread of each of these production units and is intermittently interrupted or attenuated by the moving thread in each balloon. The resulting shading is converted into an electric signal in a receiver of the monitoring system. The threads of the individual production units can be identified by evaluating the relationships of amplitude, time and phase between the individual shading impulses. The process enables on-line production and quality control to be carried out on multi-spindle textile machines such as ring spinning machines at an acceptable cost.
Claims22
A process for production and quality control of production units in multi-spindle textile machines in which the production units are arranged in a row and the thread at each production unit executes a transverse movement in the form of a balloon to enclose a rotationally symmetrical space, characterized in that a group of at least two of said production units is monitored in common by a light beam passed sequentially through the rotationally symmetrical spaces associated with the balloons formed by the threads in all the production units of said group, in that the light beam is intermittently interrupted or attenuated in each of the rotationally symmetrical spaces by the moving thread therein, and in that the shading thereby produced is converted into an electric signal for evaluation to provide an indication of at least one parameter associated with the threads of said production units.
Apparatus for production and quality control of production units in multi-spindle textile machines in which the production units are arranged in a row and the thread at each production unit executes a transverse movement in the form of a balloon to enclose a rotationally symmetrical space, said apparatus comprising a monitoring system for monitoring in common the production units of a group containing at least two of said production units, said monitoring system including a transmitter for a light beam and a receiver for such beam so arranged that the beam passes through said rotationally symmetrical spaces formed at all said production units of said group, and means for evaluating the fluctuations in intensity of the beam occurring at the receiver.
In textile apparatus of the type in which a plurality of threads are processed concurrently in a group of different zones, with the thread in each zone being processed so that the thread moves through a balloon path portion in which a moving thread portion swings around an axis of revolution, and in which the balloon path portions of the several zones are disposed in a row, the improvement which comprises light transmitters means for directing at least one beam of light across the balloon path portions of all of said zones in said group so that the moving thread portion in each of said zones will cross said beam during each of its revolutions through its balloon path portion, means for receiving the light from said transmitter means as modified by the passages of said thread portions therethrough and for evaluating the received light.
Multiple spindle thread processing apparatus comprising a plurality of production units arranged in a row for processing a plurality of threads concurrently with the thread at each of the production units being swung around an axis of revolution to form a balloon path portion, and a monitoring system for monitoring in common the production units of a group containing a plurality of said production units, said monitoring system including means for transmitting a beam of radiation sequentially through the balloon path portions of the threads at all of the thread production units of the group so that such threads will each cross said beam as the thread swings about its axis of revolution, and means for receiving the radiation of said beam as modified by the passages of thread portions therethrough.
Dependencies are inferred from the claim text.