Textiles: fiber preparation – Working – Combing
Utility Patent
2000-01-06
2001-01-02
Worrell, Danny (Department: 3741)
Textiles: fiber preparation
Working
Combing
C019S215000, C019S225000
Utility Patent
active
06167595
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention refers to a method of combing textile fibers, in which the fibers of a thin layer blanket, known in this instance as a lap, wound up in a roller-type package obtained by joining and pressing several fiber slivers originating from carding, are processed in an intermittent and synchronous fashion by a series of organs, advancing rollers, clamping devices, circular and straight-line combs and so on, which work together in picking up the lap fibers in tufts and shaping another enhanced type, marked by more parallel fibers and a lesser content-of short fibers, of “neps” and micro-impurities. More details on combing machines are given in European Patent No. 573,121.
2. Description of the Related Art
In the most modern machines, the combing occurs at a rate of 250 to 400 beats per minute and consists in selectively transferring edges of long fibers, picked up, combed and laid out by the feed lap to the new lap representing the enhanced product, separating the short fibers, destined for articles of lesser quality.
In general the combing machines are constituted of several combing “heads”, in the order of ten heads per machine. The laps produced by the machine's combing stations turn out to be formed by combed fibers of a cleaner, more even and stronger type. The combing machines' combing heads are generally equipped with common driving devices and controls, which are jointly started and arrested. This typically occurs when the feed lap runs out and needs to be replaced with a new package. These packages are in the shape of a roll of a width of about 300 mm and a diameter of about 500 mm, in which the lap is wound up on a tube forming its core.
When the feed in one of the stations or combing heads runs out, the general practice is to stop, replace and prepare all the feed laps in all the stations, even if the laps are still not depleted in some of them, and to restart the combing machine.
This operation consists in removing the tubes of the laps while perhaps advancing the laps, in replacing them with new laps and in preparing the first edge of the new lap packages, so as to make it possible to join them to the tail edge of the previous laps, and realign them with the organs of the combing station.
Italian Patent No. 1,276,945 in the name of the describes and claims a device and an automatic lap replacing method capable of essentially eliminating any manual action during the lap replacing operations. However, this replacing system provides for holding fast a new lap package in an upstream “stand-by” position with respect to the lap being processed, while already preparing the joining edge.
This prearranging and preparing of the joining edge is done by the operator who positions the package, identifies the end of the lap and inserts it in a suction-type preparing device. During the transfer of the package and preparation of the edge, the prearranged lap package comes into both a rolling and sliding contact with fixed parts of the combing machine. In the overall replacing method, the outer surface of the package and the ready-to join edge may be damaged or at least disarranged, thus rendering the device less efficient and at any rate demanding not only a surveillance but also a manual operator intervention in the method. Before starting the machine, all the packages require a check-up of the operation's successful conclusion and an eventual intervention, in addition to a stand-by prearranging and preparing action for the new lap packages, with the resulting increase in down time periods and processing costs.
SUMMARY OF THE INVENTION
In particular, the object of this invention is the previously mentioned operation of replacing the feed laps in a combing machine, and refers to a device and a method capable of achieving, without any manual operator intervention, even the stand-by prearranging and edge preparing stages in the method of replacing the laps in a combing machine.
This invention refers to a new system for replacing the laps, and consists in a device and a method. The method is in its essential features defined by its preferential embodiments. The device is defined in its features by its essential embodiments.
In order to better describe the characteristics and advantages of this invention, the same will be described in relation to a typical embodiment, illustrated for exemplifying but nonlimiting purposes in the simplified drawings shown in
FIGS. 1
to
4
.
REFERENCES:
patent: 5027475 (1991-07-01), Mondini et al.
patent: 5038441 (1991-08-01), Mondini et al.
patent: 5077865 (1992-01-01), Mondini et al.
patent: 5303453 (1994-04-01), Langel et al.
patent: 5430917 (1995-07-01), Inagaki et al.
patent: 5778493 (1998-07-01), Moretti et al.
Pasini Giovanni Battista
Prandini Girolamo
Marzoli S.p.A.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Welch Gary L.
Worrell Danny
LandOfFree
Method and device for automatically replacing the lap,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for automatically replacing the lap,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for automatically replacing the lap,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2444987