JPS6099062A - Apparatus for continuously treating strip like fabric without imparting stress thereto - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for continuously and without applying stress to a belt-shaped fabric, such as drying, pre-shrinking, finishing, etc. The fabric of
In at least one treatment zone, the entire width of the fabric is lifted by an air stream injected against the fabric from the direction F, and the strip of fabric is placed in a wave pattern and transferred from one treatment zone to another. a conveyor belt for conveying to the zone; and at least one conveyor belt extending transversely to the conveyor direction, arranged below the conveyor belt and coupled to a source of compressed air.
a lower nozzle, at least one closing means for opening and closing the lower nozzle, and a partition wall arranged above the lower nozzle and extending transversely to the conveying direction and delimiting the processing zone. In this case, the lower nozzle is inclined at a slight angle in the conveying direction with respect to the vertical line, a perforated plate is installed between the partition walls, and the distance between the perforated plate and the conveying belt is such that the distance between the perforated plate and the conveying belt is The present invention relates to the apparatus in which the maximum distance between the conveyor belt and the perforated plate is 5° to 15α.

An apparatus for continuously processing strip-shaped textiles is disclosed, for example, in German Patent No. 2,644,309 (US Pat. No. 4,121,311).
It is publicly known from the Japanese Patent Publication No. In this known device, a strip of fabric is lifted under the action of a pulsed air stream, the lateral extension being limited by two partition walls, but the height to which it can be lifted is almost unlimited. This results in tensile stresses in the fabric strip, which are not completely removed even if the fabric collapses after the air has been shut off. The pre-shrinking obtained with this device is not sufficient.0 Devices that are improved from the above device are already commercially available. The features of this improved device are that the lower nozzle is inclined at an angle of approximately 15° in the conveying direction with respect to the vertical line, and that a perforated plate extending transversely to the conveying direction is installed between the partition walls. The distance between the perforated plate and the conveyor belt gradually increases in the conveyance direction, and the maximum distance between the conveyor belt and the perforated plate is approximately 13 degrees. The main advantages of this device are that the lifting height of the fabric strip is limited, so that no tensile stresses occur, and that the fabric strip is forced to collide violently against the perforated plate or partition wall, thereby causing damage within the fabric. This means that the stress is reduced.

However, experience has shown that the above-mentioned apparatus tends to cause the strip of fabric to twist during processing.

There are several possible causes for this, including the fact that the band-shaped fabric is not woven uniformly at the weaving stage, the fabric having a velor surface, or poor adjustment of the equipment.

The object of the invention is to improve the device mentioned at the outset in such a way that it is also possible to process strip-shaped fabrics that are twisted or have correspondingly different properties without any problems.

The above problems (1) are solved by the lower nozzle being able to pivot around its own lower axis.

As is already known, in order to direct the air flow exiting the lower nozzle vertically, it is necessary to determine the pressure of the air supplied to the lower nozzle as accurately as possible depending on the geometry of the lower nozzle. . If the air pressure is too low, the airflow will tend to move closer to the end of the lower nozzle; if the air pressure is too high, the airflow will tend to move away from the nozzle end. In both cases the strip of fabric is twisted to the right or to the left. To compensate for this torsion, the lower nozzle is pivotable about its own vertical axis.

According to an advantageous embodiment of the invention, the baffle formed by the partition wall and the perforated plate can be tilted around its axis pointing in the conveying direction. As a result, parts of the web are lifted higher by the air flow before other parts of the web impinge on the buckle, thereby counteracting the twist. With the same device, it is also possible to reshape an already twisted strip of fabric during processing.

Furthermore, it is well known that processing strips of fabric with a velor surface is always difficult. In this case as well, the influence of the velor can be offset by rotating the F section nozzle or tilting the baffle, so that an optimally processed strip of fabric can be taken out of the device. On both sides of the perforated plate, upper nozzles are arranged which blow an air stream of controllable intensity downwards, in particular obliquely downward in the conveying direction through the holes and inclinations of the perforated plate. These upper nozzles also make it possible to dry the upper surface of the fabric strip. In addition, these upper nozzles create a) two-air compression, so that the fabric does not collide violently against the metal of the baffle. , acts on the S-shaped portion, which will be described later, thereby further strengthening pre-shrinking. The surface of the perforated plate of the baffle is kept clean and the straightening effect on the twisted fabric strip is improved.

For maximum effectiveness, the upper nozzle injects air oppositely to the lower nozzle.

The frequency of the air injected from the lower nozzle is from 111Z to 81-1z, especially from 1-1z to 511Z.
It is.

The number of airflow impingements per unit time improves the glyph yuri/king effect.

Next, one embodiment of the present invention (f) will be explained with reference to the attached drawing (a) τJ.

As shown in FIG. 1, a strip of fabric 2 is placed in a wave-like, relaxed state on a continuously driven endless conveyor belt l, which is moved by the device according to the invention from left to right in the figure. transported. The apparatus is provided with several processing zones, each of which includes an F section nozzle 3 having a nozzle opening 4 and a closing section 5, and a 2nd section disposed above the F section nozzle 3.
It consists of two partition walls 7 and a perforated plate 8. The perforated plate 8 extends laterally with respect to the conveying direction, and the distance between the perforated plate 8 and the conveying belt 1 gradually increases in the conveying direction.

One of the closing parts 4A 5 is the nozzle opening 4 of the lower nozzle 3.
When released, the air stream causes the web 2 to impinge on a baffle shaped J2 by the perforated plate 8 and the partition wall 7, forming an S-shaped section 6. The closing member 5 closes the nozzle opening 4f again.
: When the fabric is closed, the S-shaped portion 6 of the fabric strip 2 is crushed and transported to the next processing zone.

As can be seen from FIG. 1, the slide plates illustrated as closure elements 5 are connected to one another and are actuated by a common drive, not shown.

In this case, at the end position of the sliding plate 5, only one of the two adjacent lower nozzles 3 is always open, and at the intermediate position of the sliding plate 5, all F
The two nozzles 3 are configured to be closed at the same time. If this condition is not strictly adhered to, waves will be continuously formed in the strip-shaped fabric 2 and the fabric 2 will be transported directly to the outlet of the device.

As shown in FIG. 1, upper nozzles 9 are disposed above the perforated plate 8 to open nozzle openings 10, and these upper nozzles 9 are similarly closed by a closing member such as a base plate 11. , or be released.

The cover plate 11 is controlled so that the upper nozzle 9 injects air opposite to the lower nozzle 3 in contrast to the control of the cover plate 5. As indicated by the symbol 6',
The air flow exiting from the upper nozzle 9 is particularly
Acts on the character part. Furthermore, an air cushion is created by the upper nozzle 9 in the area of the 41-perforated plate 8, which prevents the web 2 from violently impacting the perforated plate 8.

There is no fear of lint adhering to the surface of the perforated plate 8 due to the upper nozzle 9. The lint is directed by the excess air to a lint sieve, which is usually provided in the undercarriage of the device.

Furthermore, a vertical line 11111 12 is illustrated in FIG.

Around this vertical axis line 12, a partition wall 7, a perforated plate 8,
The baffle consisting of the upper nozzle 9, the nozzle opening 10, and the sliding plate 11 can be tilted to compensate for the shadow v that promotes twisting of the belt-like fabric.

FIG. 2 is a perspective view of the device shown in FIG. 1, with the baffle 7.8 partially omitted and shown partially exploded.

It can be seen that the two lower nozzles 3 are provided with closure members 5. The arrow 14 means that the lower nozzle 3 (possibly one lower nozzle) can be pivoted around its own vertical axis 16. This lower nozzle 3
Due to the swirl, one side of the fabric web impinges on the baffle 7.8 earlier than the other side, so that a pre-shrunking on one side of the fabric web is different from the pre-shrunking on the other side.

The nozzle opening 4 of the lower nozzle 3 is approximately 7
It is inclined by 5° in the conveying direction, in which case the conveyor bell) l
The distance between the perforated plate 8 and the perforated plate 8 is approximately 13 cnr at maximum. Generally, this distance needs to be selected to be smaller as the lower nozzle 3 is inclined.

[Brief explanation of the drawing]

1 is a schematic cross-sectional view of a device according to the invention, and FIG. 2 is a perspective view of the device of FIG. 1, partially broken away. ■...Conveyor belt 2...Band-shaped fabric 3...Lower nozzle 5, 11-Closing member 7...Partition wall 8...
Perforated plate 9... Upper nozzle 16... Vertical axis of lower nozzle

Claims (6)

[Claims] (1) An apparatus for subjecting a strip-shaped fabric to treatments such as drying, pre-shrinking, and finishing continuously and without applying stress, wherein the strip-shaped fabric is applied to at least one treatment zone. conveyor for transporting the fabric in wave form from one processing zone to another, lifted by an air stream directed against the fabric from below over its entire width; a belt, at least one F section nozzle extending transversely to the conveying direction, arranged on the F side of the conveying belt and coupled to a compressed air source; and a mechanism for opening and closing the F section nozzle/J. at least one closing means and partition walls arranged on both sides of the F nozzle and extending transversely to the conveying direction and delimiting the processing zone, with the F nozzle being , a perforated plate is installed between the partition walls at a slight angle in the conveying direction with respect to the vertical line, and the distance between the perforated plate and the conveying belt gradually increases in the conveying direction, and the conveying belt and the perforated plate having a maximum spacing of 5 cut or 5α, characterized in that the lower nozzle (3) is pivotable about one of its own topcoat axes (16). (2) Patent No. 51j Ice Range, characterized in that the baffle formed by the partition wall (7) and the perforated plate [8] can be tilted 1゜ from the axis (12) facing the conveying direction. The device according to item 1. (3) A compressed air source is connected above the perforated plate (8).
Notice that the upper nozzle (9) is placed to blow the air stream onto the top surface of the 1°17-shaped fabric (2)! 1) The device 0 according to claim 1 or 2, which is characterized by: (4) a closure device (II) in which the upper nozzle (9) operates as follows with respect to the closure means (5) of the lower nozzle (3);
In other words, it is equipped with a closing device (11) that operates so that air is injected from the upper nozzle (9) in opposition to the air flow injected from the F section nozzle (3). A device according to claim 3, characterized in that: (5) Claim 1, characterized in that the upper nozzle (9) and the baffles (7, 8) can be tilted separately.
Apparatus according to any one of clauses 4 to 4. (6) Any one of claims 1 to 5, characterized in that the frequency of the air flow injected from the lower nozzle (3) or the upper nozzle (9) is 111z to 8Hz. The device described in.