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US 6,675,441 B2Granted
Device and method for detecting lightweight waste in a carding machine
AssigneeTrutzschler GmbH & Co. KG
InventorAchim Breuer
Life of this patent
Estimating the term…
Abstract
A carding machine includes clothed rolls for processing and carrying fiber material thereon; an arrangement for separating lightweight waste from the fiber material processed by the clothed rolls; a conduit for receiving the lightweight waste; an air stream generating arrangement for generating an air flow in the conduit for removing the lightweight waste; an adjusting device for varying a degree of carding intensity of the carding machine; and a detecting device for measuring quantities of the lightweight waste produced at a respective degree of carding intensity.
Claims10
A carding machine comprising:
- (a) clothed rolls for processing and carrying fiber material thereon;
- (b) means for separating lightweight waste from the fiber material processed by the clothed rolls;
- (c) a conduit for receiving the lightweight waste;
- (d) air stream generating means for generating an air flow in said conduit for removing the lightweight waste;
- (e) adjusting means for varying a degree of carding intensity of said carding machine;
- (f) detecting means for measuring quantities of the lightweight waste produced at a respective degree of carding intensity;
- (g) a carding machine outlet, said conduit extending from said carding machine outlet;
- and
- (h) a pair of crushing rolls and a sliver trumpet through which the fiber material consecutively passes, said conduit extending from between said crushing rolls and said sliver trumpet.
6 more elements
A carding machine comprising:
- (a) clothed rolls for processing and carrying fiber material thereon;
- (b) means for separating lightweight waste from the fiber material processed by the clothed rolls;
- (c) a conduit for receiving the lightweight waste;
- (d) air stream generating means for generating an air flow in said conduit for removing the lightweight waste;
- (e) adjusting means for varying a degree of carding intensity of said carding machine;
- and
- (f) detecting means for measuring quantities of the lightweight waste produced at a respective degree of carding intensity,
- wherein said conduit comprises a first branch conduit and a second branch conduit, said first branch conduit containing said detecting means, said second branch conduit extending from said first branch conduit for bypassing said detecting means, and a gate for selectively directing the lightweight waste into said first branch conduit and said second branch conduit.
5 more elements
A carding machine comprising:
- (a) clothed rolls for processing and carrying fiber material thereon;
- (b) means for separating lightweight waste from the fiber material processed by the clothed rolls;
- (c) a conduit for receiving the lightweight waste;
- (d) air stream generating means for generating an air flow in said conduit for removing the lightweight waste;
- (e) adjusting means for varying a degree of carding intensity of said carding machine;
- (f) detecting means for measuring quantities of the lightweight waste produced at a respective degree of carding intensity, said detecting means comprising
- a filter disposed in said conduit for retaining thereon the lightweight waste carried by the air flow;
- first and second pressure sensors disposed in said conduit upstream and downstream of said filter as viewed in the direction of the air flow;
- and
- a pressure difference forming device connected to said first and second pressure sensors for determining a difference between pressures detected by said first and second pressure sensors;
- (g) a movably supported carrier disk having a first portion disposed in said conduit and a second portion disposed externally of said conduit;
- (h) first and second filter elements, constituting said filter, mounted on said disk eccentrically thereof;
- and
- (i) means for moving said disk for periodically and alternatingly placing said first and second filter elements in said conduit and externally thereof.
11 more elements
A carding machine comprising:
- (a) clothed rolls for processing and carrying fiber material thereon;
- (b) means for separating lightweight waste from the fiber material processed by the clothed rolls;
- (c) a conduit for receiving the lightweight waste;
- (d) air stream generating means for generating an air flow in said conduit for removing the lightweight waste;
- (e) adjusting means for varying a degree of carding intensity of said carding machine;
- (f) detecting means for measuring quantities of the lightweight waste produced at a respective degree of carding intensity, said detecting means comprising
- a filter disposed in said conduit for retaining thereon the lightweight waste carried by the air flow;
- first and second pressure sensors disposed in said conduit upstream and downstream of said filter as viewed in the direction of the air flow;
- and
- a pressure difference forming device connected to said first and second pressure sensors for determining a difference between pressures detected by said first and second pressure sensors;
- and
- (g) control means for setting the degree of carding intensity as a function of the pressure difference.
9 more elements
A method of measuring lightweight waste in a carding machine, comprising the following steps:
- (a) processing fiber material by clothed rolls;
- (b) separating lightweight waste from the fiber material processed by the clothed rolls;
- (c) introducing the lightweight waste in a conduit;
- (d) generating an air flow in said conduit for carrying the lightweight waste;
- (e) varying a degree of carding intensity of said carding machine for setting a degree of gentle carding and a degree of aggressive carding;
- (f) measuring quantities of the lightweight waste produced at a degree of gentle carding;
- (g) generating first signals representing measured quantities of the lightweight waste produced at a degree of gentle carding;
- (h) measuring quantities of the lightweight waste produced at a degree of aggressive carding;
- (i) generating second signals representing measured quantities of the lightweight waste produced at a degree of aggressive carding;
- and
- (j) comparing said first and said second signals with one another.
8 more elements
Dependencies are inferred from the claim text.