Double twisting machine
AssigneeLTG Lufttechnische GmbH
InventorsJoachim Furstenberg, Dietmar Hencke
Life of this patent
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Abstract
A double twisting machine is equipped with air flow control devices which create preferred conditions in the vicinity of each twisting station and, particularly, in the immediate vicinity of the twisting mechanism and the thread balloons. Pre-conditioned air, adjusted for temperature and humidity, is delivered through a nozzle located above each twisting spindle and is directed generally to the location of the thread guide loop. The protective container for the bobbin has a lower opening which permits the air flowing into the container from the top to emerge below where an exhaust conduit carries it away. A coaxial shroud surrounds the protective container and forms an annular air passage through which conditioned air may flow in both directions.
Claims14
In a double twisting machine which includes at least one twisting station, said twisting station having a protective container surrounding a payoff bobbin and a turntable for providing thread rotation, the improvement comprising:
- nozzle means for supplying air to the vicinity of the top of said protective container, said nozzle means being mounted on said twisting station and supplied with air which is pre-conditioned with respect to at least one of the parameters of temperature and humidity;
- and
- said protective container being provided with an opening in its respective end near said turntable for permitting the flow of at least portions of said pre-conditioned air therethrough.
A method for conditioning the air in the vicinity of double twisting stations comprising the steps of:
- admitting pre-conditioned air to the top of the protective container including the payoff bobbin and to cause said pre-conditioned air to flow through said protective container in the generally downward direction in an operative machine;
- aspirating air continuously from the bottom of said protective container thereby creating a region of reduced pressure on the top of said container;
- and
- blowing pre-conditioned air into said region of reduced pressure, preferably obliquely with respect to the longitudinal axis of said protective container.
Dependencies are inferred from the claim text.