JPH0811845B2 - Method for splitting a wrap at the exit of a linear comb for long fibers and apparatus for carrying out such a method - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to the field of the textile industry, and in particular to detaching leather (cu) prior to conversion into sliver.
At the exit of ir aracheur, rap (vo
linear combs for long fibers that form iles
euseses rectilignespoor fi
In the field of bres longues, there is provided a method for splitting a wrap at the exit of a linear comb for long fibers.

The invention also provides an apparatus for performing such a method.

[0003]

BACKGROUND OF THE INVENTION In linear combers, the combed fibers are collected on a detaching leather to form a wrap. The wrap thus formed is substantially monolithically focused in the funnel downstream of the detaching leather to form a sliver which is ejected from the comber.

However, such a known method of introducing the entire wrap into the detaching razor without splitting the wrap has several drawbacks. On the other hand, since all the joints appear at the same place with a certain interval, they become a weak point of the sliver, resulting in deterioration of the strength and easiness of sliver. On the other hand, since the joints are likewise repeated at regular intervals, depending on the material used, sliver uniformity, appearance and appearance may not be satisfactory.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to divide the wrap into at least two parts at the start of forming the wrap on the detaching roller, at the downstream end of the detaching roller, these parts. Is to remedy the above drawbacks by proposing a method of focusing in a funnel.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide:
Splitting the wrap into at least two parts by means of a compressed air jet directed perpendicular to the direction of travel of the wrap to form parallel separate small part wraps when starting to form the wrap on the detaching leather; Gradual winding of the edges of the small wrap, and discharge from the downstream of the detaching leather to guide it into at least one funnel, where it is focused into at least one funnel.
And a step of obtaining two large slivers.

The object of the invention is also to provide at least three vats, which are arranged above the detaching leather between the detaching roller and the pulling roller and have a compressed air injection nozzle extending perpendicularly to the direction of travel of the wrap. It is an object of the invention to provide a device for carrying out the method, characterized in that it consists mainly of passages.

[0008]

The invention will be more fully understood from the following non-limiting description of several preferred embodiments of the invention with reference to the accompanying drawings.

In the method of splitting a combed fiber wrap 1 of the present invention used at the exit of a linear comb for long fibers as shown in the accompanying FIGS. 1 to 3, the detaching roller 3 is used to detach the leather 3. At the beginning of the formation of the wrap above, the compressed air jet directed perpendicularly to the direction of travel of the wrap 1 divides the wrap 1 into at least two parts to form parallel separate small separate part wraps 8. , Gradually wrapping the edges of the small wraps 8 to form small slivers, which are discharged from the downstream of the detaching leather 3 and guided to at least one funnel 5 where they are focused. Get at least one large sliver.

The device for carrying out the method of the invention comprises a compressed air injection nozzle which is arranged above the detaching razor 3 between the detaching roller 2 and the pulling roller 4 and extends perpendicularly to the direction of travel of the wrap 1. Have at least 3
It is characterized in that it is mainly composed of one steam passage 7.

A passage 7 having a compressed air injection nozzle is preferably incorporated in the cover surface 6 which maintains the wrap 1 on the detaching leather 3 between the rollers 2 and 4. The passage 7 is provided along each edge of the detaching leather 3. The passages 7 are preferably arranged parallel to the direction of travel of the passages 1 or at a slight skew to match the trajectory of the edges of the separate small part wraps 8. The number of passages 7 is a function of the partial wrap 8 to be formed, and the cross section of the compressed air injection nozzles of the passages can be circular, elliptical, square or rectangular or any other shape.

Compressed air is supplied to passage 7 in a known manner from a compressed air circuit incorporating a pressure reducing valve or any other source of compressed air.

At the exit of the circular and stationary combers, the combed fiber wrap 1 is captured by the detaching roller 2. The roller mounts the wrap on the detaching leather 3. Detaching Leather 3 is Wrap 1
To the tension roller 4. The roller 4 introduces the wrap into the funnel 5. When passing through the detaching leather 3, the wrap 1 covers the cover surface 6 and the detaching leather 3
And a plurality of small partial wraps 8 are divided by an air jet ejected from the nozzle of the vaporization passage 7. This partial wrap becomes a small sliver due to the steaming action on the edge while advancing on the leather 3. These small slivers are then collected in the funnel 5 via pulling rollers, focused in the funnel and discharged as one large sliver.

Due to the steaming effect on the edges of the small partial wrap 8 and the entire fiber, the fibers are entangled with each other, the strength and the cohesiveness of the resulting sliver are improved, and the sliver is less likely to be crushed or uneven. Therefore, the subsequent processing is facilitated and its quality is improved.

Since the wrap 1 is divided, small separate wraps 8 are displaced so that the joints do not appear at regular intervals. Since the joints are displaced from each other, they are dispersed in the sliver. Thus, the sliver uniformity, appearance and appearance are improved, especially when certain materials are used. This is extremely advantageous for improving the quality of the obtained product. Further, when the number of the steam passages 7 is increased and the number of divided wraps 1 is increased, the overlapping and entanglement of the fibers are enhanced, and as a result, the strength and conjugation of the obtained sliver are improved.

According to an alternative embodiment of the invention not shown in the accompanying drawings, another small partial wrap 8 may be focused in a plurality of funnels.

FIG. 4 of the accompanying drawings shows another variation of the invention. In this embodiment, a small partial wrap 8 is wound as an individual sliver and introduced into at least one funnel 9 eccentric to the axis of the detaching leather 3. Therefore, when focusing individual slivers, each sliver passes through the eccentric outlet along different trajectories, so the joint of each sliver is offset with respect to the joint of another sliver, and thus the strength of the resulting sliver. , Conjugation and uniformity are improved.

Bonding between the fibers of the small partial wrap 8 is accomplished by advancing the detaching razor 3 along arrow 10 and then retracting it by a smaller stroke as indicated by arrow 11.

According to the invention, the wrap is divided into a plurality of smaller sub-wraps when the formation of the wrap on the detaching leather is started and then these are carried in one or more funnels downstream of the detaching leather. It is possible to form a sliver at the exit of the linear comb by returning the partial wraps in the formation of a small sliver.

Of course, the invention is not limited to the embodiments shown in the drawings and described in the text. Particularly, from the viewpoint of the configuration of various elements, various modifications or technically equivalent replacements are possible without departing from the protection scope of the present invention.

[Brief description of drawings]

1 is a longitudinal section view of an embodiment of an apparatus for carrying out the method of the invention.

2 is a plan view of the device of FIG. 1. FIG.

FIG. 3 is an enlarged cross-sectional view of the device of FIGS. 1 and 2.

FIG. 4 is a partial plan view of a downstream end of a detaching razor showing a modified example of a sliver forming funnel.

[Explanation of symbols]

 1 Wrap 2 Detaching Roller 3 Detaching Leather 4 Pulling Roller 5, 9 Funnel 6 Cover Surface 7 Passage 8 Partial Wrap

Claims (6)

[Claims] 1. When starting the formation of a wrap on a detaching leather by a detaching roller, a jet of compressed air directed perpendicular to the direction of travel of the lap divides the wrap into at least two parts which are parallel and separate. Forming a small partial wrap, gradually winding the edges of the small wrap to form a small sliver, discharging the small sliver from the downstream of the detaching leather and guiding it into at least one funnel, Focusing in a funnel to obtain at least one large sliver, the method of splitting a wrap at the exit of a linear comb for long fibers. 2. Mainly composed of at least three vat passages which are arranged above the detaching razor between the detaching roller and the pulling roller and which have a compressed air injection nozzle extending perpendicularly to the direction of travel of the wrap. An apparatus for performing the method of claim 1, wherein 3. The passages with compressed air injection nozzles are preferably incorporated into the cover surface that maintains the wrap on the detaching leather between the rollers, each passage along each edge of the detaching leather. The device of claim 2, wherein the device is deployed as a device. 4. The passages are preferably parallel to the direction of travel of the wraps or are arranged at a slight skew to match the track of the edges of the separate small partial wraps. The device according to claim 2 or 3. 5. The apparatus of claim 2, wherein separate small section wraps are bound together in a plurality of funnels. 6. The method according to claim 2, characterized in that separate small part wraps, wound as individual slivers, are introduced into at least one funnel eccentric to the axis of the detaching leather. apparatus.