JP2627601B2 - Device to put fiber web on holding belt circulating - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

According to the present invention, a fiber web having a width smaller than the holding band is spirally wound at a predetermined lead angle into a plurality of windings in parallel with the circulating endless holding band so that the longitudinal edges thereof abut each other. To a fiber web feeder having a fiber web edge aligning device that can run at right angles to the holding band and is fed to the holding band, and a fiber web already placed on the holding band and arriving. A device for detecting the progress of the vertical edge as the contact edge of the abutting fiber web winding, the device for placing the fiber web on a circulating holding band.

[0002]

2. Description of the Prior Art In order to place a plurality of windings in parallel on a circulating holding band such that the longitudinal edges of the individual windings abut against each other, a transverse feed of the holding band with respect to a supply device is provided. It is known to make adjustments according to the course of the longitudinal edges of the fiber web winding already placed on the holding band. For this purpose, on the basis of the course of the marker yarn detected by the photoelectric device, in order to derive a manipulated variable for controlling the drive for the lateral feed of the holding band relative to the stationary supply device in this case, the marker yarn Is known together with a fiber web (EP-A-123969). In order to be able to take into account only deviations from a given longitudinal course of the fiber web winding, it is known to detect the longitudinal edge forming the abutment edge of the incoming fiber web (US Pat. No. 3,91,676). This allows precise alignment with respect to the longitudinal edges of the fiber web windings, provided that a constant fiber web width is expected due to the alignment of the fiber webs coming into the holding zone. It has indeed been found that width variations in the area of the fiber web arriving at the holding zone, and thus non-uniform juxtaposition of the individual fiber web windings, occur repeatedly.

[0003]

SUMMARY OF THE INVENTION The object underlying the present invention is to improve the device for placing a fiber web on a circulating holding band by means of simple structural means, so that the fiber web which is successively placed on the holding band is improved. The aim is to ensure exact alignment with respect to the longitudinal edges of the winding.

[0004]

In accordance with the present invention, there is provided, in accordance with the present invention, a retainer which arrives at a holding band between the aligning device and the point at which the incoming fiber web begins to ride on the retaining band. A device is provided for detecting the position of the contact edge of the fiber web abutting on the fiber web winding already placed on the
The device for detecting the progress of the vertical edge of the fiber web winding already placed on the holding band is the target value transmitter, and the device for detecting the position of the contact edge of the fiber web arriving at the holding band is the actual value transmitter. The controller is connected to each of the adjusters, and the adjuster controls the elapse of the contact edge of the incoming fiber web so that the target value in the target value transmitter and the actual value in the actual value transmitter match. Manipulate.

By these means, not only the deviation in the course of the abutment edge of the fiber web winding already placed on the holding band, but also in the range of the width of the fiber web reaching the holding band. Be considered. This is because the course of the abutment edge of the fiber web winding already mounted on the holding band forms a target value for the abutment of the abutment edge of the incoming fibrous web, This is because the control is performed so as to eliminate the target value-actual value deviation that occurs.

In order to detect the position of the abutting edge of the fiber web arriving at the holding band, different detectors are used, which are sufficient for the longitudinal course to be without impairing the fiber web properties or the fiber web course. Can be used if exactly required. A particularly advantageous situation in this regard is
Obtained by means of a device consisting of a photoelectric receiver directed to a turning guide for a textile web. This is because the measurement can be carried out in a known manner via a photoelectric receiver, preferably via a line scanning device, in a known manner, and the turning device for the fiber web determines the course of this fiber web relative to the measuring device. This is especially important with regard to the focusing of the optoelectronic receiver required for sufficient resolution.

As operating device for the course of the abutment edge of the fiber web arriving at the holding band, all operating devices for laterally moving the incoming fiber web with respect to the holding band are used. For this reason, a traversing drive of the supply device is proposed for this purpose. However, the relatively large mass of the entire feeder causes an increase in expense when fine adjustments are to be made. In this connection, if the feeder is provided on a carriage for transverse feed and is rotatably supported with respect to the carriage about a rotation axis extending at right angles to the fiber web or holding band, A more advantageous situation arises because the mass to be moved for the lateral movement of the incoming fiber web is limited. The lateral movement of the fiber web arriving by the constant lateral driving of the carriage can be superimposed on the lateral movement via the rotation of the supply device, and the lateral movement allows the winding of the fiber web on the holding band. And all deviations from the straight longitudinal course in the area of the incoming fiber web are taken into account, so that the fiber web supplied is
An additional advantage is obtained that it is always adapted to the lead angle when riding on the holding band.

Another possibility of controlling the course of the abutment edge of the incoming fiber web is obtained by trimming the abutment edge, the edge alignment blade corresponding to which is located in the lateral direction. Is adjusted. This control does not require intervening in the traversing of the fiber web arriving at the holding band, so that the fiber web can be placed on the holding band at a fixed lead angle, thereby enabling the subsequent winding of the fiber web. There is the advantage that a fast course of the contact edge is guaranteed.

When the external tension applied to the fiber web supplied to the holding band changes, the width of the fiber web naturally changes. This is because increasing the tension reduces the width of the fibrous web. This effect is also used for controlling the longitudinal course of the fiber web when the feed rate of the fiber web is adjusted. The tension on the fiber web results from the difference between the fiber web feed rate and the fiber web withdrawal rate determined by the peripheral speed of the holding band. In this case also, in some cases, no additional intervention in the traversing is required.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

On the endless holding band 2 which circulates, the fiber webs 1 having a smaller radiance than the holding band 2 are spirally wound at a predetermined lead angle in a plurality of windings so that the longitudinal edges abut against each other. In order to wind the fiber web 1, the endless holding band 2
The feeding device includes a feeder 3 for the fiber web 1, which feeder 3 is mounted on a guide rail 5 at right angles to an endless holding band 2 guided around a deflecting roller 6 by a carriage 4. It is possible to travel along. In order to drive the carriage 4, a rack 7 parallel to the guide rail 5 is fixedly provided, and a pinion 9 driven by an electric motor 8 as a traversing drive device on the carriage 4 is provided. It is biting. The supply device 3 itself includes the fiber web winding body 1.
1 and an edge aligning device 12 for the fibrous web 1 which is drawn from the fibrous web winding body 11 and supplied to the holding band 2. The fiber web 1 drawn from the fiber web winding body 11 first passes through a free slack section to reach a belt conveyor 14 so that the internal stress due to winding can be offset, and the belt conveyor 14 and the drawing roller pair 15 are used. The longitudinal edges are precisely trimmed by the edge aligning device 12 between them. The fiber web 1 whose longitudinal edges have been trimmed is subjected to a predetermined tensile stress in order to form a plurality of windings 2a to be placed on the holding band 2 with the vertical edges contacting each other in parallel at a predetermined lead angle. Is maintained on the holding belt 2 via a turning roller 16 as a turning guide device.

The fiber web 1 drawn from the fiber web winding body 11 and having its longitudinal edges trimmed by the edge aligning device 12
In order that the fiber web 1 can be accurately placed on the holding band 2 circulating at a predetermined lead angle, the fiber web 1
Through to the direction of the lead angle. For this purpose, the feeding device is supported on the carriage 4 via a rotary bearing 17 so as to be rotatable around the axis of rotation. This rotation axis is at right angles to the fiber web 1 or the holding band 2 in the region of the point 18 where the fiber web 1 starts to be placed on the holding band 2,
The fiber web 1 is provided away from a place 18 where the fiber web 1 starts to be placed.

A hydraulic cylinder 19 is provided for rotating the supply device 3 relative to the carriage 4 and is pivotally mounted between the carriage 4 and the supply device 3 and can receive hydraulic pressure on both sides. The control of this pressurization takes place via the valve 20 of the pressurizing conduit, only one of which is shown schematically in FIG. The operating drive 21 of these valves 20 is controlled by a regulator 22, which is connected to an angle transmitter 23 for receiving the actual value of the rotational position of the supply device 3 with respect to the carriage 4. . Further, holding band 2
A device 24 for detecting the progress of the longitudinal edge as the contact edge of the fiber web winding 2a which already rests on the fiber web 1 and which comes into contact with the incoming fiber web 1; A device 25 for detecting the abutment edge of the fiber web 1 abutting the fiber web winding 2a already mounted thereon is connected to the adjuster 22. This device 25 for detecting the progress of the abutment edge of the fiber web 1 arriving at the fiber web winding 2 a already resting on the holding band 2 is preferably a photoelectric receiver 26.
For example, it may be configured as a line scanning device, and the photoelectric receiver includes a fiber web turning guide device 16 located between the pull-out roller pair 15 and the fiber web loading start point 18.
The contact edge of the fiber web 1 in the range is detected. A light source 27 for illuminating the abutment edge of the fiber web to be detected may be provided on the side of the turning guide device 16 opposite to the photoelectric receiver 6. A turning guide device 16 which has a width maintaining effect on the fiber web as much as possible and is thus formed in a spherical shape
Has a cutout 28 in the area of the fiber web abutment to be detected, thereby allowing light transmission to the fiber web abutment or a free view of the photoelectric receiver 26.

In order to ensure an accurate abutment with respect to the longitudinal edge of the individual fiber web winding 2a, a detection device 24 for the position of the abutting edge of the fiber web winding 2a with respect to the width of the holding band 2 is provided.
Is used as a target value and is determined by the contact edge of the incoming fibrous web 1 to ensure that the incoming fibrous web 1 follows the winding web 2a already placed on the holding band 2. The actual value to be set must be adjusted to the above-mentioned target value. When the target value-actual value deviation is ascertained by the regulator 22, the drive motor 8 for traversing the carriage 4 can be driven, thereby eliminating the deviation in the longitudinal edge course of the abutting fiber web windings. be able to.

Another possibility of controlling the longitudinal edge course is to operate the valve 20 in such a way that the target value and the actual value coincide with each other, and
The output signal of the device 24 for detecting the progress of the vertical edge of the fiber web winding 2a already mounted thereon is to be a reference value of the lead angle when the fiber web is mounted on the holding band 2.

The edge aligning device 12 has a cutting tool 29 as an edge aligning blade that can be moved laterally during edge alignment.
If a lateral position adjustment device 30 which can be controlled by means of 2 is attached to this cutting tool 29, another possibility for controlling the longitudinal edge course is provided. With these cutting tools 29, which can be adjusted at right angles to the width of the fibrous web, the abutment edge of the incoming fibrous web can be trimmed in accordance with the detected target value-actual value deviation.

An electric motor 31 for driving the pull-out roller pair 15 of the edge aligning device 12 has a predetermined speed ratio with respect to the pull-out roller 15 so that a constant tension is applied to the fiber web 1 for the edge aligning process. The belt conveyor 14 is also driven. Since the electric motor 31 can be controlled by the adjuster 22, the feed speed of the fiber web 1 to the holding band 2 can be adjusted so that the target value and the actual value match with the constant tension in the range of the edge aligning device 12. . That is, when the feed speed of the fiber web 1 is reduced with respect to the generally constant peripheral speed of the holding band 2, the tension of the fiber web in the range between the edge aligning device 12 and the point 18 where the fiber web 1 starts to be loaded on the holding band 2. And the width of the fibrous web decreases accordingly. On the other hand, an increase in the feeding speed of the fiber web 1 is accompanied by an increase in the width of the fiber web. Thereby, the fiber web supplied to the holding band 2 can be brought into contact with the contact edge of the fiber web winding 2a already placed on the holding band 2 as accurately as possible.

The invention is, of course, not limited to the embodiment shown. Thus, the individual means for controlling the longitudinal course of the fiber web arriving at the holding zone can be used alone or in any combination, if required by the circumstances.

[Brief description of the drawings]

FIG. 1 is a schematic side view, partially cut away, of an apparatus for placing fiber webs side by side on a holding band circulating in a plurality of windings according to the present invention.

FIG. 2 is an enlarged side view in which a part of a device for detecting a position of an abutting edge of a fiber web supplied to a holding band is partially cut away.

FIG. 3 is a schematic plan view of the position detecting device.

FIG. 4 is a diagram showing a rotation driving device of the supply device,
It is the enlarged plan view cut | disconnected along the line.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fiber web 2 holding band 2a fiber web winding 3 supply device 12 edge aligning device 18 start point of loading of fiber web on holding band 22 adjuster 24 device for detecting progress of vertical edge of fiber web winding 25 Device for detecting the position of the tangent edge

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Peter Müller Marchhitrenk Renne Rousjutrace 30 in Austria (72) Inventor Hannes Boom 35

Claims (6)

(57) [Claims] 1. A circulating endless holding band is wound with a fiber web having a width smaller than the holding band in a spiral form at a predetermined lead angle in a plurality of turns in parallel with the longitudinal edges abutting each other. A feeder for the fiber web, which has a device for aligning the fiber web which can be run at right angles to the holding band and which is fed to the holding band, and which abuts against the fiber web already mounted on the holding band and arriving. A device for detecting the progress of a vertical edge of a vertical edge as an abutting edge of a fiber web winding, the apparatus for placing a fiber web on a holding band circulating;
Between 2) and the point (18) at which the incoming fiber web (1) begins to rest on the holding band (2), the fibers arriving at the holding band (2) and already mounted on this holding band (2) A device (25) for detecting the position of the contact edge of the fiber web (1) abutting on the web winding (2a) is provided, and the fiber web winding (2a) already mounted on the holding band (2) is provided. A device (24) for detecting the progress of the longitudinal edge is used as a target value transmitter, and a device (25) for detecting the position of the contact edge of the fiber web (1) arriving at the holding band (2) is used as an actual value transmitter. , Adjuster (2
2) are connected to each other and the adjuster (22) is adapted to determine the course of the abutment edge of the incoming fiber web (1) so that the desired value at the desired value transmitter and the actual value at the actual value transmitter coincide. A device for placing a fiber web on a holding belt circulating, wherein the control device is operated. 2. A device (25) for detecting the position of the abutment edge of a fiber web (1) arriving at a holding band (2), comprising a photoelectric device directed to a deflection guide device (16) for the fiber web (1). The apparatus of claim 1, comprising a receiver. 3. The control device according to claim 1, wherein the control device for the course of the abutment edge of the incoming fiber web comprises a traversing drive of a feed device. An apparatus according to claim 1. 4. A control device for controlling the course of the abutment edge of the incoming fibrous web (1), comprising a feeding device (3) about a rotational axis extending at right angles to the fibrous web (1) or the holding band (2). 4. The device according to claim 1, wherein the device comprises a device for rotating the device. 5. An edge aligning blade (29) of an edge aligning device (12) corresponding to an abutment edge of an incoming fiber web (1). 5. The device according to claim 1, wherein the device comprises a device for adjusting the lateral position of the vehicle. 6. The control device for the course of the abutment edge of an incoming fibrous web (1) comprising a device (31) for adjusting the feed speed of the fibrous web (1) to a holding band (2). Apparatus according to one of the preceding claims, wherein: