Process for splicing fibers in strips, and a machine for feeding a textile machine incorporating such a process
OwnerTeresio Bottarelli, Antonio Nulchisinventors
Life of this patent
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Abstract
A process for splicing textile fiber strips, which process comprises directing compressed air onto the fibers from one side of the overlapped fibers until they become matted, and exhausting the air through a filtering element disposed on the other side of the fibers, and is implemented by a machine includes a channel for passing a supply fiber strip therethrough and having an end portion of a standby strip suspended thereabove, and an air-powered means, for splicing the broken portion of the supply strip to the end portion of the standby strip in the event of a break in the supply strip detected by a sensor.
Claims15
A machine (1) for feeding the drawing frame on a textile machine with a number of fiber strips (3);
- characterized by the fact that it comprises at least a first member (2) for collecting a supply strip (3);
- at least a second member (4) for collecting a standby strip (5);
- a channel (7) inside which said supply strip (3) runs and over which is suspended the initial portion (22) of said standby strip (5);
- releasable means (23) for supporting said portion of said standby strip (5);
- a sensor (27) for detecting the continuity of said supply strip (3) and located upstream from the inlet on said channel (7);
- an air-powered device (18) for splicing the overlapping fibers of said supply and said standby strips (3, 5);
- and a vertically-moving gripping device (9) supporting said means (23) supporting said standby strip, and said air-powered splicing device (18);
- said gripping device (9) being designed to move down inside said channel (7), so as to place said initial portion (22) of said standby strip (5) over the end (40) of said supply strip (3) portion located immediately downstream from said sensor (27), and to grip said strips between the bottom wall (20) of said channel (7) and the base (14) of said gripping device (9) itself.
A process for splicing the broken end of a supply fiber strip to the end of a standby fiber strip, comprising the steps of:
- (a) overlapping an end portion of a first strip with an end portion of a second strip;
- (b) directing compressed air onto the overlapped ends from a first side thereof by means of at least a first nozzle generating a jet of compressed air;
- (c) exhausting the compressed air through a filtering element disposed on an opposite second side thereof after the air has passed through the overlapped ends;
- (d) moving the jet of compressed air laterally across the overlapped ends until the ends have become matted.
A process for splicing the broken end of a supply fiber strip to the end of a standby fiber strip, comprising the steps of:
- (a) overlapping an end portion of a first fibrous strip with an end portion of a second fibrous strip;
- (b) directing onto the overlapped ends compressed air from one side thereof by means of at least a first nozzle generating a vertical jet of air and at least a second obliquely disposed nozzle generating an oblique jet of compressed air;
- (c) exhausting the compressed air through a filtering element disposed on an opposite side of the overlapped ends after the air has passed through the overlapped ends;
- and
- (d) moving the jets of compressed air laterally across the overlapped ends until the fibers of the ends have become matted.
A machine for feeding the drawing frame on a textile machine with at least two fiber strips and with each strip wound about a spool, comprising:
- (a) a channel for being disposed adjacent the strips and having an inlet for permitting one of the strips to pass therethrough;
- (b) gripping means disposed adjacent said inlet for releasably supporting an end portion of the other strip so that the supported end portion may be selectively positioned in overlapping arrangement with an end portion of the other strip;
- (c) sensor means positioned upstream of said inlet for detecting the continuity of the strip passing through said channel;
- (d) air-powered means for splicing the overlapping end portions of the fiber strips;
- and
- (e) means operably interconnecting said air-powered means and said gripping means, said means operably interconnecting being disposed downstream of said sensor.
Dependencies are inferred from the claim text.