Textiles: manufacturing – Warp preparing or handling – Reeling or beaming
Reexamination Certificate
1999-09-29
2001-05-22
Vanatta, Amy B. (Department: 3741)
Textiles: manufacturing
Warp preparing or handling
Reeling or beaming
C028S195000
Reexamination Certificate
active
06233798
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to (a) a process for generating pattern warps in which different threads are pulled by a rotating thread guide from a creel rotating synchronously therewith to be laid off on parallel transport bands running axially and distributed circumferentially around a non-rotating drum; as well as (b) a pattern warps warping machine with a non-rotating drum on whose circumference there are provided axially disposed, parallel transport bands with a rotating creel and with rotatable thread guides rotating synchronously therewith in order to pull threads from the rotating creel and lay them onto the thread bands.
2. Description of Related Art
An example of the state of the art is disclosed in German OLS DE 196 05 924 A1. In the known pattern warps warping machine the rotating creel carries eight spools so that eight threads can be simultaneously laid about the drum circumference by means of the appropriate thread guide. This permits one to keep the production time short for the desired pattern warps. However, the patterning possibilities are somewhat restricted because the pattern repeats itself after eight threads.
A virtually unlimited pattern complement, however, can be obtained on a commercially available pattern warps warping machine in which always only one thread from the thread guide is: (a) taken up in a reserve magazine, (b) would around the drum, and (c) when the need lapses, again laid off in the reserve magazine. There follows then the next thread, which is taken out of another reserve magazine, wound around the drum and then again laid off. However, this gives rise to longer production times.
SUMMARY OF THE INVENTION
In accordance with the illustrative embodiments demonstrating features and advantages of the present invention, there is provided a process employing thread guides for producing pattern warps on axially oriented transport bands distributed circumferentially around a non-rotating drum. The pattern warps are made from different threads from a rotatable creel. The process includes the step of pulling from the rotatable creel different threads by rotating the thread guides synchronously with the rotatable creel. Another step is laying different threads about the transport bands on the non-rotating drum. The process also includes the step of connecting threads not needed at a particular time point to their thread guide by clamping and cutting the threads upstream of the drum. Another step is holding stationary and unclamping from the thread guides, a free cut end of thread now needed.
According to another aspect of the invention, a pattern warps warping machine is provided with a non-rotating drum and a parallel plurality of axially oriented, transport bands. These bands are distributed circumferentially around the drum. Also included is a rotating creel and thread guides. The thread guides are synchronously rotatable with the creel for pulling threads therefrom and laying some on the transport bands. The thread guides each have an orbiting clamping means for clamping thread at a clamping point. The clamping means includes cutting means for cutting off threads between the clamping point and the drum. The machine also has a stationary holding means for holding stationary, free thread ends from the thread guides.
Accordingly, an object of the present invention is to provide more pattern opportunities with shorter production times. This task is procedurally solved whereby the threads not needed at a particular time point are connected wit their thread guide by clamping and are cut between the clamping point and the drum. Upon a renewed need, the free thread end of the previously quiescent thread is held stationary and unclamped from the thread guide.
Since the unneeded threads are connected with their thread guide by clamping means and furthermore, cut between the clamping point and the drum, these unneeded threads are carried around during the rotation but are not wound onto the drum. This avoids collisions between the threads currently in use and required by the pattern. Thus, a selection is possible of the threads available from the rotating creel to be wound onto the drum. This enables the creation of patterns in a time shorter than heretofore. When it is desired to again take up threads into the pattern which are now needed, it is merely necessary to hold the free thread end in a stationary manner and to release the clamp.
In a further embodiment, patterning occurs wherein two or more similar threads are laid at the same time, which in a plurality of patterns give rise to a substantial simplification of the work. As a matter of construction, with the assistance of the rotating clamping points, the cutting arrangement and the stationary holding arrangement, the present task is solved by arranging the necessary process steps that are to be carried out. In a further development offering simplifications, the individual cutting points are activated at the same time as the clamping points. There are several possibilities available for the closing and opening of the rotating clamping points. It is particularly desirable to utilize a Maltese cross for opening and closing the clamping points. A stationary switching arrangement completes the required turn of the Maltese cross for activation, based on the run movement.
Alternatively the clamping arrangement may be activated by an orbiting air cylinder or by an orbiting electromagnet wherein the pneumatic or electric signal line may be led over a distribution point on the hub of the thread guide arrangement.
REFERENCES:
patent: 4409710 (1983-10-01), Kofler
patent: 4683625 (1987-08-01), Baltzer
patent: 4765041 (1988-08-01), Baltzer
patent: 5022128 (1991-06-01), Beerli et al.
patent: 5590448 (1997-01-01), Lenzen et al.
patent: 5950289 (1999-09-01), Tanaka
patent: 5956827 (1999-09-01), Vieri
patent: 19605924 (1929-08-01), None
patent: 4422098 (1996-01-01), None
patent: 19605924 (1997-08-01), None
patent: 0375480 (1989-11-01), None
patent: 860477 (1996-03-01), None
Japanese Official Action, dated Mar. 7, 2000.
European Search Report, dated Jan. 11, 2000, EP 99 11 7601.
Behr Omri M.
Karl Mayer Textilmaschinenfabrik GmbH
Vanatta Amy B.
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