Boots – shoes – and leggings
Patent
1992-11-20
1996-05-14
Trammell, James P.
Boots, shoes, and leggings
364470, 57264, G05B 1502
Patent
active
055174043
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a process control system, in particular for spinning mills.
STATE OF THE ART
The idea of a computer-controlled spinning mill has been in the minds of experts for at least twenty years (see for example: U.S. Pat. No. 3,922,642; BE 771277; BE 779591).
The efforts undertaken in this direction have risen manifold within the last few years (see for example: DE-OS 3906508; U.S. Pat. Nos. 4,563,873; 4,665,686; EP-PS 0410429).
The intermediate stage on the way to a process control system was process data acquisition, which appeared in 1980. This was described, for example, in the article "Die Prozessfatenerfassung als Fhrungsinstrument" (Process Data Acquisition as Guidance Instrument") by W. Kistler, which appeared in "Textil Praxis International" in May 1984. The further development of process data acquisition can be traced by the following articles: Spinnereibetrieben" Mills") by Marcel Zund in "Melliand Textilberichte", June 1985; Winding", published in "Textile World", April 1986; Dan Claeys, published in the "Canadian Textile Journal" of May 1986, which outlines the "downloading" of settings for slub catchers.
The Reutling spinning colloquium held in December 1986 was dedicated to the computer sciences. General deliberations about the use of process control systems in spinning were presented such as, for example, in the article "Integration of Information in Textile Plants--Considerations on Textile CIM" (Dr. T. Fischer).
The requirements that an information system has to meet were outlined in the article "Integrated Information Processing as Instrument of the Management", published in Melliand Textile Reports, November 1987, page 805 to 808. First ideas for up-to-date solutions are shown in the article "Integration and Networking Capabilities in Textile Production by CIM", page 809 to 814 of said publication.
The BARCO CIM system may be quoted as being the state of the art in January 1991. This system was disclosed in the publication "CIM in spinning" of Barco Automation, Inc., Charlotte, N.C., U.S.A. It provides one "data unit" (machine terminal) per machine, whereby the process control computer (the main frame) exchanges signals with the data units of the machines. The data unit (with its displays) also provides operator support. Although the above-mentioned publication mentions bidirectional communication, the system is obviously primarily designed for data acquisition in the machine and advancement of data to the process computer. A connection with the machine controls is neither shown nor indicated. Such data units can be integrated into a single network, which simplifies the system architecture--possibly at the expense of system flexibility and reaction speed. Moreover, as no true central control is provided by the system, there are no measures taken to protect the machine connected to the network from the effects of a network failure or breakdown. A further development of this system is disclosed in the article "Yarn breakage detector for ring spinning machines", published in Melliand Textile Reports in September 1991 (ITMA Edition).
In certain fields of industry, process control systems have long been introduced as state of the art. The question arises as to why these "known principles" cannot be realized without any additional efforts in the spinning mill. Instead, the implementation requires considerable efforts and is carried out step by step. The answer is that this is partly due to the fact that it is very difficult to "impose" a process control system on a machine complex (such as a spinning mill, for example). Process control systems can be introduced fairly easily whereever data processing and process technology were developed simultaneously. This is more the case, for example, in the field of manmade fiber preparation (filament spinning), so that it was possible to agree on the introduction of process control systems in filament spinning as early as the Dornbirn conference of 1981 (lecture of K. Ibonig--"Changes in Process Control Technology by Microeletronics").
REFERENCES:
patent: 4835699 (1989-05-01), Mallard
patent: 4876769 (1989-10-01), Schlepfer et al.
patent: 4928353 (1990-05-01), Demuth et al.
patent: 4940367 (1990-07-01), Staheli et al.
patent: 5046013 (1991-09-01), Ueda et al.
patent: 5161111 (1992-11-01), Oehler et al.
patent: 5225988 (1993-07-01), Barea
Biber Heinz
Meyer Urs
Meyer Urs A.
LandOfFree
Process control in the textile plant does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process control in the textile plant, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process control in the textile plant will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1901353