Textiles: fiber preparation – Working – Combing
Patent
1993-08-31
1995-10-17
Crowder, Clifford D.
Textiles: fiber preparation
Working
Combing
19236, 19150, 19239, D01G 1900, D01G 2100
Patent
active
054578515
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This application claims the priorities of both PCT Application No. PCT/CH92/00236, filed Dec. 7, 1992, and Swiss Application No. -03 620/91-4, filed Dec. 9, 1991. The invention also relates to further developments of the principles as set forth in Swiss patent application No. 1841/91 of Jun. 21, 1991 as well as patent application No. PCT/CH91/00140, both of which are also assigned to the assignee of this invention.
BACKGROUND OF THE INVENTION
1. Field of the Invention
In accordance with the previously-noted PCT application No. PCT/CH91/00140 it is possible to gain from a preparatory machine (such as a draw frame or a combing machine, for example) a signal representative of the behaviour of the previous machines in the processing line. A signal can be gained from the combing machine, in particular, which is representative of the short fibre share in the feed material and which is representative of the performance of the previous machines with respect to mixing.
2. Discussion of the Background of the Invention and Material Information
In accordance with previously-noted Swiss application No. 1841/91 it is possible to gain a signal from a controlled drafting arrangement which represents the evenness of the feed material and the respective performance of the previous machines. This drafting arrangement can be provided in the combing machine itself.
In accordance with a further pending Swiss patent application a combing machine is proposed with which a signal representative of the comber waste share can be gained. A respective process is also provided, according to which the comber waste of a combing head or a machine is periodically or continuously collected either partially or in its entirety and the respective quantity is measured and a respective signal is generated. In this respect it is not of importance how the comber waste is carried off by the combing head or the machine. This can either be made pneumatically or mechanically, for example (e.g. by means of a conveyor belt) or in any other suitable manner.
SUMMARY OF THE INVENTION
In accordance with the present invention, a combing machine with a fiber mass measuring device arranged after the combing heads of the combing machine, the combing machine being in combination with other fiber processing machines located upstream of the combing machine, the combing machine comprising: means for determining the comber waste occurring in the combing machine; and means for generating a signal representative of the evenness behaviour of the fiber mass being supplied to the combing machine, the signal-generating means being responsive both to the fiber mass determined by the measuring device as well as to the determination of the comber waste, so that a change in the evenness behaviour of the fiber processing machines located upstream of the combing machine is only deduced in the event that the comber waste share remains within preset tolerances while the evenness of the fiber mass as scanned by the measuring device changes.
In a further embodiment of the machine of this invention, the fiber mass measuring device is provided as an element of a controlled drafting arrangement including a control unit.
In another embodiment of the machine of this invention, the signal-generating means is only indirectly responsive to a signal supplied by the fiber mass measuring device. Preferably, the signal generating means is responsive to signals which are generated in the control unit.
In a differing embodiment of the machine of this invention, a computer is provided, in combination with both the combing machine and the other fiber processing machines located upstream of the combing machine, as the signal-generating means and that the computer is allocated to one of the combing machine, as a machine control unit, and a group of machines, as one of a group control unit, and a process control computer.
In accordance with the present invention, in a method for a combing machine with a fiber mass measuring device arranged after the combi
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Crowder Clifford D.
Izaguirre Ismael
Maschinenfabrik Rieter AG
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