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US 4,393,547 AGranted
Method and apparatus for the output control in a carding machine
AssigneeTrutzschler GmbH & Co. KG
InventorFritz Hosel
Life of this patent
Estimating the term…
Abstract
For controlling the output and the silver density in a carding machine, lot-specific data are determined, then fed into a memory from which the data may be recalled at will and applied to the control of the carding machine.
Claims8
In a carding machine including a doffer, a first motor for driving said doffer, a feed roller and a second motor for driving said feed roller;
- the improvement comprising an apparatus for controlling the output and the sliver density in said carding machine;
- said apparatus having
- (a) a first motor regulator connected to said first motor;
- (b) a second motor regulator connected to said second motor;
- (c) a first desired value setter for said doffer, connected to said first motor regulator;
- (d) a second desired value setter for said feed roller, connected to said second motor regulator;
- (e) a memory connected to said first and second desired value setters for feeding setting signals therefrom into said memory;
- (f) a first switch having first and second positions for selectively connecting said first motor regulator to said first value setter or to said memory;
- and
- (g) a second switch having first and second positions for selectively connecting said second motor regulator to said second value setter or to said memory.
7 more elements
A method of controlling the output and the sliver density in a carding machine including a feed roller and a doffer each having a motor control, comprising the following steps:
- (a) applying signals, representing lot-specific data, from a first desired value setter connected to the motor control for the doffer and from a second desired value setter connected to the motor control for the feed roller to a memory connected to said first and second value setters for storing in said memory information representing lot-specific data;
- (b) applying from said memory a first electric signal, representing a desired value, to the motor control for the doffer for setting delivery speeds;
- and
- (c) applying from said memory a second electric signal, representing a desired value, to the motor control for the feed roller, for setting a web tension in the carding machine with said first and second electric signals.
1 more element
Dependencies are inferred from the claim text.