JPH0780601B2 - Width adjuster for reel cutter - Google Patents

Abstract

Apparatus for spreading a plurality of co-traveling web portions of a cut web such that a defined spacing is produced and maintained between the web portions. The apparatus includes a pair of spaced, perforated plates for permitting the application of sub-atmospheric air pressure to both sides of the traveling web portions to remove particulate matter from both surfaces of the web portions. The web spreading and particulate matter removing apparatus are connected to move as a unit while maintaining the spacing of the perforated plates from the web.

Description

Description: TECHNICAL FIELD The present invention relates to a width adjuster for a reel cutter having at least two web guide rollers. More specifically, the present invention spreads a cut portion of a fibrous web such as paper to be cut in a moving direction of the web in a lateral direction with respect to the moving direction, and a predetermined width for a distance between the cut webs. The present invention relates to a small device that collects and eliminates dust particles generated while maintaining the temperature.

BACKGROUND ART A reel cutter divides a material web unwound from a roller in a longitudinal direction (moving direction of the web) into a number of strips (that is, a web that is narrowly cut). The cut web is then wound on another roller. During this process it is very important to guide the cut webs exactly parallel to one another so that the cut surfaces of adjacent cut webs are free of defects. Increasingly, width-adjusters with two web guide rollers are used for this purpose, in which case the first roller is the side of the material web on which the material web is wound, as seen in the direction of web travel. It has a spherical shape (that is, a profile) in a part of the surface on one side or in a region spreading in the circumferential direction.
This shape is obtained by bending the shaft of the web guide roller into a corresponding shape. This first web guide roller spreads the entire web material in the width direction, so that adjacent cut webs diverge at the cut edges and they are no longer parallel. In order to feed the cut webs correctly to the next winding step, these webs must be guided parallel to one another. A second web guide roller at a certain distance from the first web guide roller, preferably several hundreds of millimeters, on which the web material is partially wound, has a profile of the surface of the first web guide roller. The concave or convex shape is opposite to the spherical or convex shape. The separated individual webs, which are laterally spaced from one another, are guided in parallel while remaining separated. This type of width adjuster requires a large space between the cutting station and the winding station.

In addition to the above requirements, it is necessary for the reel cutter to remove dust, residues, or deposits on the material web during the cutting process in the longitudinal direction. Such a generally known removing device not only requires a large space as described above, but also worsens the space condition.

European patent application No. 0431275 A2 discloses a device for spreading a relatively narrow component web which results when a moving relatively wide web is cut into strips in a longitudinal direction. The moving relatively narrow web strips are
It is first unrolled by a first curved rotating roll and then guided in parallel and co-moving by passing through a second curved rotating roll. This device includes an adjusting mechanism for adjusting the directional angle between the curved rolls, and the directional angle between the curved rolls is adjusted to a desired value. This device does not collect dust during the web cutting process and does not provide a means for collecting dust in association with the curved rolls that spread the web.

DISCLOSURE OF THE INVENTION From the above facts, the present invention is based on the object of arranging a dust removing device and a double expander roller device in a narrow area between a cutting station and a winding station of a reel cutting machine. . Furthermore, it is desired to be able to insert the cut web from the cutting station into the machine parts which are arranged later in the simplest possible manner.

The above object is achieved by the width adjusting machine for a reel cutter of the present invention. The adjuster is configured to maintain the distance between the vertically cut webs by sequentially passing a moving web through a convexly curved web expansion roller and a concavely curved roller. In between these first and second rollers is a dust collector, which has a pair of spaced vacuum plates located on either side of the web. The substantially flat plate with the suction opening utilized in the present invention can be realized by different means, similar to the suction opening, with the same inventive concept. However, it must be ensured that a sufficiently strong and averaged intake air flow is achieved with mechanical stability so that impurities adhering to the moving web can be removed and released into the intake opening. . The plate may be provided with grooves, holes or similar structures for this purpose, or it may be a crossed or non-crossed screen structure with screening spaces.

The present invention has the highest performance in terms of dust removal function, but also has the smallest structural dimension, and also simplifies the web edge insertion process.

The discharge of the intake air, including the generation of the intake air and the discharge of the particles to be removed, is carried out by the most different means, for example by a flexible or rigid pipe led out from the intake opening. Particularly preferably, the plate with the suction opening is the part of the hollow body which extends beyond the width (machine width) of the material web. The device is not only complicated in construction, but can also be constructed to be very effective in terms of fluid technology. This device only requires a particularly small space, and if both hollow bodies are part of the device supporting the web guide rollers of the width adjuster arranged on both sides of the plate, they are of mechanical strength. Is especially effective from. This is because this configuration makes it possible to dispense with torsion bars or similar structural elements which would otherwise have to be provided on the side of the material web. In this particular case, both hollow bodies comprise a plate whose front end is rigidly connected to a bracket for each of the two web guide rollers which are preferably arranged on both sides of the plate, whereby The hollow bodies and the brackets together form a support device. With such a configuration, the width adjuster together with the suction device can be easily attached to and detached from the reel cutting machine as a compact one such as a prefab type, a modular type, a structural unit type (combination of structural elements), or if desired. It can be installed in the simplest way. The configuration of the support device, called a bracket, can be made in different configurations, the most heavy being not a bracket-like configuration in the narrow sense but a structural member or multiple structural members provided at each of the front ends. The structure group consisting of acts as a bearing receiver for the web guide roller and can be rigidly connected to the hollow body extending over the entire width of the machine.

The device according to the invention is particularly advantageous when the support device for both web guide rollers rotates about an axis extending parallel to the axis of rotation of the guide rollers. In this case, the dust removing plate also rotates without changing the progressing state of the web in the gap region formed between the two plates. As is well known, the ability of both web guide rollers of the width adjuster to swing horizontally changes the angle at which the web of material wraps around the web guide rollers, thereby changing efficiency. Such changes are required, for example, when the number and / or width of cut webs of material web changes.

Practical examples of the object of the invention, in particular ensuring a good guiding or insertability of the web strips, are described in the claims and obvious from them.

The above-mentioned structural elements used in the present invention, which are described in the claims and described in the examples, have no particular restrictions on their size, shape, material selection and technical concept. Selective criteria known in the art can be applied without any restrictions.

Other details, other features and other advantages of the object of the invention will be apparent from the following description in connection with the drawings showing a preferred embodiment of the width adjuster according to the invention. The drawing is a schematic view showing the width adjuster according to the present invention in cross section, and the cut surface is parallel to the traveling direction of the web and is orthogonal to the web guide roller.

The width adjuster with a dust removing device according to the present invention can be effectively applied to a material web that is not basically divided in the longitudinal direction or is not yet divided in the longitudinal direction. Furthermore, it is also possible to divide basically different materials, such as paper and cardboard, in particular fibrous or metal foil, plastic and similar materials, or layered materials.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view of the present invention showing curved first and second web guide rollers mounted on either side of a dust collector. ing.

BEST MODE FOR CARRYING OUT THE INVENTION In the drawings, a passage of a material web 11 passing through a width adjuster 10 is indicated by a broken line (long and short lines), and a traveling direction of the web is indicated by an arrow 12. Viewed in the direction of web travel, the material web 11 first wraps around the first web guide roller 13 by a small angle of 40 degrees and then wraps around the second web guide roller 14 in different winding directions. Katsuko. As a result, the length between the two guide rollers is several decimeters, for example 5
A linear portion of the web, about the size of a decimeter, is created. The profile of the surface of the portion of the web guide roller 13 around which the material web 11 is wound when viewed in the traveling direction of the web is convex, and the corresponding portion of the guide roller 14 is concave.
In the preferred example shown, this shape is obtained by flexing two guide rollers in the same way (for example,
See DEAS 2201844).

Bearings 15A or 15B for supporting the web guide rollers 13 and 14 are provided at the corresponding front ends of the web guide rollers 13 and 14. These bearings are connected to the holding plate 16 by screwing or the like, and as a result, the bearings 15A and 15B are
With the holding plate 16 between the corresponding bearings on the side of the device, it is supported so as to rotate about a rotation center 18 provided on each holding plate 16 facing the machine frame (not shown),
A bracket 17 which is commonly used by the web guide rollers 13 and 14 is formed. The axis of rotation extending through the two opposing centers of rotation 18 intersects with the material web 11 in the plane of the web and forms a right angle to the direction of travel of the web at approximately the center between the two web guide rollers 13, 14. There is.

Brackets 17, which are rotatably supported on both sides of the material web 11, are connected to each other in the region of the support plate 16 by two hollow, long side bodies (profile bodies) 19, 20. The two side bodies, like their front ends, are welded or bonded together, which results in two suction chambers.
21 and 22 are formed, and these suction chambers 21 and 22 have at least one hole 23, 24 and one dust removal pipe 25, 26 arranged in the support plate 16 in a vacuum source having a dust collector, such as a cyclone. Are linked by. To better accommodate narrow space requirements, the dust removal pipes 25, 26 extend at approximately right angles or other suitable angles to the side bodies 19, 20, thereby supporting plate 16 and dust removal pipes. The rotational connection between 25 and 26 allows it to fit well under narrow conditions (the direction of rotation is indicated by arrows A and B).

The side bodies 19 and 20 are formed on the side facing the material web 11 as perforated plates in the present embodiment, and side faces 19A and 20A which are flat plates with suction openings 27 in a general sense. The plates have the full width of the material web 11 and the material web 11
In the traveling direction of the material web, the material web 11 extends in a part of the passage of the material web and is parallel to the material web 11. The arrow C indicates the direction in which the intake air and the dust particles contained therein flow inward through the intake openings 27 of the plates (side surfaces 19A, 20A).

The bracket 17 and the side bodies 19, 20 are the web guide rollers 13,
Since the integrated support device for 14 is formed, the relative position between the material web 11 and the side wall surfaces 19A, 20A of the side bodies 19, 20 is such that the support device rotates about the rotation center 18. Does not change.

Pressure chambers 29, 30 integral with the side bodies 19, 20 in the form of pipes 31, 32 are provided over the entire width of the machine. These pipes have nozzles 28 for supplying water to the material web 11 on both sides of the gap D between the side wall surfaces 19A and 20A. This water guides the material web and removes dust particles that are lightly attached.

In the illustrated embodiment, the pipe 32 is rotatable about its longitudinal axis and the operating direction of the nozzle can be set to be optimal for its purpose. A guide surface 33 is provided on the side body 20 to assist in the insertion of the web.

In the preferred embodiment shown, the distance between the dust removing device surface and the material web can be made constant independently of the swing position of the web guide rollers 13 and 14 as described above, so that both sides of the material web are cleaned at the same time. To be done. Sides 19A and 20A have nozzle 28
It also simplifies the automatic insertion of the material web into the width adjuster. The side bodies 19, 20 simultaneously serve as a vacuum chamber and also as part of the support for the web guide rollers 13, 14 so that conventional components normally used for this purpose can be omitted.

The inhaler of the present invention can be used effectively, as will be apparent to those skilled in the art without departing from the spirit of the invention, and basically in combination with other cylinders or rollers of a reel cutting machine. .

Claims (9)

[Claims] 1. A device for adjusting the relative lateral position of a plurality of cut webs (11) moving together to remove particulates therefrom, the device comprising at least two web guide rollers; At least one substantially flat plate (19A, 20A) penetrating through the opening (27) of said web guide roller (13, 14) between said two web guide rollers (13, 14). At least one substantially flat plate (19A, 20A) disposed adjacent to the passage portion; said web guide rollers (13, 14) adjusting and maintaining the relative lateral position of the cut web An apparatus arranged in tandem in the longitudinal direction (12) of the web; the at least one plate being substantially parallel to the moving web. 2. The two hollow side bodies (19, 20) are rigidly connected at their corresponding ends; a bracket (17) is attached to each end of both hollow side bodies, on both sides of the plate. Two web guide rollers (13, 14) are rotatably mounted, said two hollow side bodies and two brackets forming a support device; A device that adjusts the positions of multiple moving webs and removes fine particles from their surfaces. 3. The support device has a rotation axis (18) extending laterally of the device in the plane of a plurality of webs moving together,
3. A plurality of moving units according to claim 2, wherein the rotation axis is parallel to the rotation axes of two web guide rollers (13, 14) arranged upstream and downstream of the plate. A device that adjusts the position of the web and removes fine particles from its surface. 4. A dust removing pipe (25, 26) attached at an angle is further provided at at least one end of each of the hollow side bodies.
A device for adjusting the positions of a plurality of moving webs according to the above section to remove fine particles from the surfaces thereof. 5. At least one of said dust removal pipes (25, 26) is mounted for rotation about an axis which extends substantially parallel to the longitudinal direction of the hollow side body. 5. An apparatus for adjusting the position of a plurality of moving webs according to the range 4) to remove fine particles from the surface thereof. 6. A plurality of movements according to claim 1, characterized in that it comprises at least one nozzle means (18, 29) arranged in each side body for supplying liquid to the moving web. A device that adjusts the position of the web to remove fine particles from the surface. 7. A nozzle means (28, 29) is arranged in each of the hollow side bodies so as to inject the pressure liquid onto the facing surfaces of a plurality of moving webs. Item 7. An apparatus for adjusting the positions of a plurality of moving webs according to item 6 to remove fine particles from the surfaces thereof. 8. The support device is rotatable around a rotation axis (18) together with at least one plate (19A, 20A) on each side body (19, 20), and at least two web guide rollers. A plurality of moving parts according to claim 1, characterized in that (13, 14) are arranged to maintain their relative position to the span of the cut web between the guide rollers. A device that adjusts the position of the web and removes fine particles from the plane. 9. An angled dust removing pipe (25, 26)
Is arranged in at least one of the hollow side bodies to connect the side bodies (19, 20) to an air source at atmospheric pressure or less; at least one nozzle means (28, 29) moves liquid into the moving web. An apparatus for adjusting the position of a plurality of moving webs and removing fine particles from the plane thereof according to claim 1, which is arranged inside each side body for applying a force.