FI106967B - Apparatus for applying a liquid or paste material directly or indirectly to a moving web of material - Google Patents

Abstract

The invention concerns a mechanism for directly or indirectly aplying a liquid or pasty medium onto a moving strip of material, in particular a web of cardboard or paper. The mechanism has a basic assembly comprising a supporting beam (3) and a distributor arrangement (4, 11) for feeding the medium to be applied into a feed gap (10) which is delimited by a front wall (9) and a rear wall (5). The mechanism further comprises adjusting and connection arrangements (D, K, L, S, Z), the region (5, 9) of the front and rear walls of the basic assembly being arranged such that components can be removably mounted as necessary to form an application chamber (12) or to form an open jet nozzle metering gap for the medium to be applied. The invention further concerns application mechanisms which comprise a basic assembly with an open jet nozzle or application chamber application arrangement, the application arrangements each being arranged such that the other application variant can be fitted.

Description

106967

SPREADER FOR SPREADING LIQUID OR PASTING MATERIAL TO DIRECTLY OR INDIRECTLY MOVING MATERIAL TRAIL-5

APPLICERINGSENHET FÖR DIREKT ELLER INDIREKT APPLICERING AV ETTÄMME - ELLER PASTAFORM PÄ EN MATERIALBANA I RÖRELSE

10

The invention relates to applicators for applying a liquid or paste material directly or indirectly to a moving web of materials according to the independent independent claims 1, 12 and 20.

15 Such applicators are individually equipped for each application. On the other hand, the application units are made with a free spray nozzle in which the liquid or pasty substance is applied through the dispensing opening as a free spray. In the direct application mode, the free jet strikes the moving material web, while in the indirect application mode, the liquid or pasty material is first applied to the application roll and transferred from its surface to the movable material web. On the other hand, spreading devices are provided with a spreading chamber from which a liquid or paste ·: *: substance is applied by means of a metering member, for example a wiper or: scraper. In the direct application mode, the material is applied directly to the moving material web, and in the indirect application mode, it is first applied to the application roll and then transferred from the roll surface to the movable material web.

A commonly known applicator with a free jet nozzle dispenser is described, for example, in Canadian Patent Application CA-A-2 101 358. Such a dispenser with a free jet nozzle is relatively easy to use, has no actual wear parts and is therefore relatively maintenance free. It is only suitable for angles: ·:: at speeds up to about 1500 m / min but has a low • · · 2 106967 susceptibility to breakage and is particularly well suited to tensile, ie thin papers.

A well-known applicator with a applicator chamber is described, for example, in European patent application EP-A-0 496 946. Such a applicator with a applicator chamber, is suitable for higher travel speeds (> 1500 m / min) and provides a greater penetration depth due to pressure in the Levi. Furthermore, such a applicator is suitable for use when the weight of the coating is low and at the same time it provides a clean covering.

Depending on the application, it is necessary to install the appropriate applicator in the coating machine. If a change in the purpose of the Cover-15 machine necessitates the use of a different Levi, the entire applicator must be replaced. Such a complete exchange is time consuming and complex.

The invention is therefore based on the technical problem of obtaining a new type of applicator which allows quick and easy replacement.

This technical problem is solved, according to the invention, by a spreading device having the characteristics of claim 1, a; the features according to independent claim 12, and • a spreading device having the features according to parallel independent claim 20.

30

The invention is based on the concept of providing a dispensing device which does not need to be completely replaced in the event of a change, including, for example, a support beam, liquid or paste delivery device, coupling and control means, and other devices. Concurrent independent claims •. ···. In the new solution of 1, 12 and 20, only those parts' ·] · that are immediately: responsible for the application of the liquid or paste material are replaced or removed.

3, 106967

The spreading device provided according to the invention thus includes a set of basic structures which are used both in connection with the use of a free jet nozzle assembly and in connection with the use of a scraping chamber equipped with a scraper. The basic assembly consists of a support station comprising a liquid or paste dispenser portion, coupling and adjusting portions required by the aforementioned portions, and a front and rear wall feed ridge, including feed channels through which the liquid or pasty substance is fed from the delivery portion.

According to the inventive solution of claim 1, the parts responsible for the application of the liquid or paste material can be installed in a previously described basic construction group. These parts, directly responsible for the application of the substance, comprise on the one hand attachable parts for forming a dispensing chamber, for example with a scraper holder scraper, as well as a burner bar, and on the other hand attachable parts defining a free spray nozzle. The basic rail assembly 20 thus functions as a substrate to which the attachable parts for forming the application chamber or the connecting parts for forming a metering bar in the form of a free jet can be mounted in modules. Thus, on the basis of the basic design group, it is possible to alternately implement: T: 25 a spreader device in the form of a spreader chamber in alternation with a free jet;

• · · • · * • · ·

In this case, the attachment parts of the spreading chamber conversion and the free jet nozzle conversion parts can be mounted as ready-made modules and interchangeable, or they can be installed as individual attachable parts. In cases where many individual components are used, · · · *: · can be advantageously formed as joint attachments, ♦. · Which can be used in a similar structural position for both 35 spreading chamber variants and a free jet nozzle. dose. Such a common attachable part, which, for example, forms part of a free jet dispenser, in one embodiment, and part of a distribution chamber in another modification, may also be securely attached and possibly integrate with it as an integral part.

According to the inventive solutions of the parallel, independent claims 12 and 20, in another variant of the application device, the parts directly responsible for the application of the liquid or paste material may be located in a applicator which is capable of operating in the first application device. Therefore, in accordance with the present invention, a functional applicator consisting of an infrastructure group and a dispensing chamber assembly or infrastructure group and a free jet nozzle assembly is selected as the basis, which can be converted to a second application of the diffuser which directly serves the liquid application of a pasty substance may be added to an existing applicator.

20 Thus, when based on a spreader device consisting of a set of basic structures having a spreader chamber, it is converted into a spreader device with a free jet nozzle by fitting appropriate free jet nozzle attachments to the components forming the spreader chamber: 25. For a spreading chamber with, for example, a scraper *: ··; bracket and pathol, for example, lips can be fastened; • · «to form a metering bar that acts as a free jet nozzle in the scraper holder and path bar.

• · · 30 If the spreader unit consisting of the basic set and the free jet nozzle assembly forms the base, the parts which are directly responsible for the application of the liquid or paste material in the spreader unit I ', · 35 shall be installed. tea, in the area with the free jet nozzle parts. Her • .1 ··. thus, for example, two lip sections form a free jet nozzle dispensing bar, install the attachment part, 1 r • ·: ·: · with a scraper body and a scraper, as well as the attachment part, * · • · 5 106967 to provide a chamber.

Therefore, in both of the previously described embodiments of the invention, the basic structure group, as well as the parts of the base applicator variant selected, are directly responsible for the application of the liquid or paste material in each variant. The change to the second applicator variant is accomplished by incorporating from the second variant those parts directly responsible for the application of the liquid or paste material and returning to the first variant by removing these parts. The application chamber assembly or free jet assembly included in each base applicator may be at least partly as an integral part of the infrastructure group. Only the removable attachment components of the base applicator that define the applicator conversion are essential from the outset.

According to the inventive solutions of the parallel, independent claims 1, 12 and 20, the conversion of a applicator with a spreader chamber into a spreader with a free jet nozzle and vice versa requires only the attachment or removal of explicit attachable parts. - ·; ·· and, as before, not the entire spreading device on the support beam; means, distribution means, adjusting means, etc. Thanks to this invention, the method of application of the coating machine can be significantly changed in a shorter time, resulting in savings and 30 more versatile use of the coating machine.

The parts to be joined in accordance with the present invention may be shaped to provide a spreader chamber assembly or a free · · · *. · Jet nozzle assembly in which the direction of rotation of the counter roll or the spreader roll occurs. ··. nan change. Of course, the parts to be joined can also be shaped by keeping the direction of rotation of the roll • ·: ·:: the same in both the direct roll case where the roll acts as a back roll of the material web passing through it and in the indirect roll case where the roll acts as a spreader roll. However, the structure of the attachable parts which changes the direction of application with respect to the roll and thereby the direction of rotation of the roll 5 may be advantageous in that the functional parts, for example the actuating members of the applicator directly responsible for applying the liquid or paste material, e.g. in each of the spreading variants, 10 maintains the coating machine on the same operating side.

Preferred embodiments according to the novel solution of claim 1 are described below.

Depending on the appropriate embodiment, the attachable parts for the application chamber or the dispensing stopper of the free jet nozzle may consist of one or more parts. In a structure consisting of a plurality of attachments, it may be useful that the common attachment member be shaped so that it can be used in the same mounting position, both when a spray chamber is connected to the device and when a free spray nozzle metering locks are attached. Such a common attachment part may be removable from the base structure group, but may also be permanently installed:: ·· even as part of the infrastructure group. If such a common; ; '· The attachable part can be formed, the number of attachable parts to be modified in the event of a change of the spreading device ··· is therefore easier and quicker to complete the modification itself - 30 min.

, The attachable parts required to form the spreading chamber »· preferably comprise a scraper bracket and a scraper bar. The components 35 required to form the spreading chamber preferably also include an overflow section within the pathola. The overflow portion is preferably formed over »6«. · An excess collection and discharge section attached to the leakage surface.

• · t · • * * «<« I <· «t · 7 106967

The components of the free spray nozzle dispensing barrier are mainly molded or lip shaped.

In a preferred embodiment, the free-jet nozzle 5 a dosing joining sections are such that the concave curved surface free of any liquid or paste-like substance agrees with a dosing arm, which both sides of the boundary surface of the wall, the other side of the free side. With such a free bent or guided surface, the free jet of liquid or pasty material can advantageously be directed in the desired direction.

In a useful embodiment of the present invention, the attachable parts for forming the free spray nozzle metering barrier are shaped such that the metering locking device forms a right angle to the liquid or paste material delivery barrier.

The front and back walls of the infrastructure group, which may also be referred to as exterior and interior walls, may have a variety of structures.

IM

However, in this case, the front and back wall areas should be shaped so that the respective attachment parts # · 9 '25 are easy to install precisely. If the attachment parts *: · 1: are attached to the removable parts in the front and rear wall areas: · 1 ·, it is advisable to combine such parts into the parts in the front and rear wall areas. In other words, the level of separation between the basic assembly group and the parts to be connected thereto, in order to form a spreading chamber assembly or a free jet nozzle assembly, may, according to the invention, pass through the front and rear walls. Parts of the front and back, as well as parts • · -. 1 · 1 of these residual regions can therefore be joined to the attachable parts and thus changed from one conversion to another.

«• · · ψ φ •»

Alternatively, as described previously for the common attachment part «1 '··' ··, the separation surface between the infrastructure group and the attachable parts to form a spreading chamber assembly or a free jet nozzle assembly may be positioned such that the front and / or rear wall the parts 5 which are placed in the area or which are continuous at this point always remain in place at the time of the change and therefore join the infrastructure group. For example, the rear wall region portion or portion thereof may remain in place in each of the conversion cases because it forms part of the free spray nozzle metering bar and 10 part of the application chamber.

Also, structures in which the front and / or rear wall regions, as well as the associated partial regions, are formed by the joining parts which are removed or secured in place are included in the novel solution according to claim 1. The new solution of claim 1 also includes structures in which the sub-regions extend beyond the front or rear wall region or remain in place with the change 20, i.e., where the infrastructure group extends beyond the front or rear wall region.

It is also practical for the spreading device to be an approximation and / or tilt means to allow for changes in play caused by: 25 different attachments of two attachment device variants *: ·· relative to the counter roll or spread roll; could be compensated and the angle of the application chamber assembly • ♦ ♦. ·. ·. the fine jet nozzle assembly with respect to the counter roll or application roll could be precisely adjusted to the conditions 30.

Preferred embodiments according to the 12 new solutions to the parallel independent patent claim are described below.

35 ···. Depending on the structure that seems appropriate / / ♦ * ·, the lip parts forming the free jet nozzle ···: can be attached permanently, possibly as a fixed part 9106967, or at least partially detachable to the front or rear wall area of the infrastructure group.

The connecting parts forming the application chamber consist of either 5 one or more parts. The attachable parts forming the spreading chamber preferably consist of a scraper bracket with a scraper and a dowel. In a suitable embodiment, an overflow section is formed in the area of the pathola. Preferably, the overflow portion has a collection and discharge portion associated with the overflow surface. In another embodiment, the scraper bracket consists of a plurality of parts.

Preferably, the applicator is provided with an approximation and / or tilt portion. The approximation section allows for a three-dimensional displacement of the spreader device 15, while the tilt section allows changing the slope of the spreader device. In this way, changes in spacing due to the various attachment parts when changing from one applicator to another can be compensated for in the counter roll or on the application roll. Additionally, the slope of the Levi-20 freestanding jet assembly or free jet nozzle assembly can be fully adjusted to the circumstances.

f 4 • tl

The following describes the preferred embodiments of the 20 independent solutions of the parallel independent patent claim: · · ·; forms.

• · · • · ·. ·. ·. Depending on the structure that may be considered appropriate, · · «, the components forming the spreading chamber may be joined as integral, possibly integral, or at least partially detachable, areas of the front or rear wall of the infrastructure group.

The fittings used to form the free spray nozzle preferably have a strip and a lip-like appearance. form. In this case it is particularly advantageous if the free-jet nozzle consisting of a dosing joining sections' · configured in such a way that the concave curved surface coincides with the free-10 106967 a dosing that is on both sides of the wall surfaces defined by a second side of the free side. The free jet of liquid or pasty material can be guided in the desired direction by such a concave bent or guided surface 5.

Depending on the intended use of the structure, the connecting portions forming the free jet nozzle metering bar may consist of one or more parts. Preferably, the spreader device 10 is provided with an approximation and tilt portion to adjust the spacing of the spreader device to the counter roll or spreader roll, as well as the slope of the spreader device relative to the spool roller or spreader roll. Such adaptations will depend, on the other hand, on the different structural dimensions of the parts to be joined in each variant and on the different operating principles for applying a liquid or paste material by means of a spray chamber or a free spray nozzle.

The parts to be joined according to the inventive solutions of the parallel independent claims 1, 12 and 20 may be. fasten in many different ways, depending on the structural conditions. Similarly, the structure of the parts to be joined depends on each application.

: T: 25 ·: ··; The following will further illustrate examples of the present invention; Embodiments Referring to the accompanying drawings, in which:

Fig. 1 is a schematic diagram of an embodiment of the first 30 examples of the present invention in which the basic set and attachments are assembled to form a spreading device in the form of a spreading chamber; • · »

Fig. 2 is a schematic diagram of an embodiment of the first example of a spreading device 35 according to the invention having #. * ··. the basic assembly is according to Fig. 1, with attachable parts for forming a free jet »· ·:; 106967 11

Fig. 3 is a schematic view of another embodiment of a spreading apparatus according to the present invention in which the basic assembly and the parts to be joined are assembled to form a spreading apparatus 5 in the form of a spreading chamber;

Fig. 4 is a schematic view of another embodiment of a spreader device according to the invention having a basic structure group according to Fig. 3, with attachable parts for forming a spreader device in the form of a free spray nozzle 10;

Fig. 5 is a schematic diagram of an embodiment of a third example of a spreader device according to the present invention, wherein the basic set and attachments are assembled to form a spreader device 15 in the form of a spreader chamber;

Fig. 6 is a schematic view of an embodiment of a third example of a spreader device according to the invention having a basic structure group according to Fig. 5, with attachable parts for forming a spreader device in the form of a free spray nozzle 20;

Fig. 7 is a schematic view of an embodiment of a fourth example of a spreader apparatus according to the present invention, wherein the < * &gt; basic assembly and attachments are assembled together to form a t * 25 spreader; Fig. 8 is a schematic view of a spreader apparatus according to the invention; a fourth example of an embodiment of the basic assembly of Fig. 7, with attachable parts for forming a dispensing device in the form of a dispensing barrier 30;

Fig. 9 is a schematic view of an embodiment of a fifth example of a spreader device according to the present invention having a spreader means in the form of a free jet nozzle and mounted on it. 35 and application means for forming a dispensing barrier.

Fig. 10 is a schematic diagram of an embodiment of a sixth application apparatus of the invention having a diffuser element in the form of a 12,106,967 application chamber; and FIG. 11 is a view of an embodiment of a sixth example of a spreader device according to the present invention having a basic structure of FIG. 10, with attachable parts for forming a spreader device in the form of a free spray nozzle.

It is known that applicators are used to apply a liquid or paste material directly or indirectly to a moving web of material such as paper and board. In an indirect application mode, a liquid or pasty material is applied by a applicator to a predetermined thickness of a layer on the surface of the roll 1, which transfers the layer to a moving web of material in the next step (not shown).

In the direct application mode, the moving material web is guided over the surface of the roll 1 and a liquid or pasty material is applied to the moving material web 20 of a desired thickness.

The direction of travel of the material web or roll surface is indicated in Figures 1 and 2 by reference numeral 2.

4:. ·: 25 In the embodiment of the first prefix *: * ·: of the spreading device of the present invention shown in two different ways; 1 and 2, has a common basic infrastructure group for each of the variants, which is described in more detail below, and whose components are mainly shown in the shadows in the figures.

Each infrastructure group consists of a support beam 3 which supports the individual parts of the spreading device and the distribution tube 4 through which the liquid or pasty material is fed. Support: * ·. There is a sloping rear wall 5 at the top of 35 k 3, passing approximately •. ***; tangential to the roll 1 and joining its lower end. γ support for bearing pins 7 on plates 6. On bearing pins 7, · · 'γ the front wall plates 8 are secured to the front wall 9 extending 13106967 and parallel to the upper side 5 of the rear wall 5 of the support beam 3. The front wall 9 is also called the outer wall and the rear wall, as well as adjacent wall areas, is called the inner wall. Between the front wall 9 and the rear wall 5 there is a supply funnel 10 which is connected to the interior of the dispensing tube 4 by a plurality of supply channels 11 passing through the rear wall 5 and can therefore be fed through the supply channels 11 by the supply funnel 10 indicated by arrows 10.

The structure of the previously described basic infrastructure group is known in principle. However, a special feature of the present invention is that the front wall 9 and the rear wall 5 are formed so that the attachable parts can be removably secured thereto, either to form a spreader chamber (cf. Figure 1) or to form a free spray nozzle (cf. Figure 1). 2).

In contrast to the components of the basic assembly group shown by shading, the connecting parts used to form the application chamber (Fig. 1) or the free jet nozzle (Fig. 2) are merely outlined for clarity.

«· I

: 25 The attachment points of the parts to be joined can be of any *: · *: design and are therefore marked with dashed lines: Figures 1 and 2.

t · · • · • * * • «·

As shown in Figures 1, the attachable parts for forming the application chamber 12 consist of an attachable scraper bracket 13 with a blade-shaped scraper 14.

. In this case, the scraper bracket 13 is provided with adjustable • · j ** !; with a device 15 acting on the scraper body 16, by means of which the scraper 14 can be moved closer or further away; 35 fine rolls or material webs **. do not obtain.

♦.

The parts to be joined in the area of the front wall 9 also include a fixed patio 17 with an overflow surface 18, which extends to the overflow surface 19 of the front wall 9, and to which excess collection and removal is made. part 20 is connected.

The liquid or pasty material fed through the distribution pipe 4 therefore flows through the feed channels 11 into the feeding gutter 10 and from there to the spreading chamber 12. The excess liquid or pasty material then flows from the sump chamber 12 through the drip tray 17 and overflow surfaces 18 and 19 10. a portion 20 through which excess liquid or pasty material is removed for processing purposes.

As shown in Fig. 2, the detachable parts 15, to form a spreader device in the form of a free spray nozzle, consist of an attachable nozzle strip 21 fixed to the front wall 9 and having a concave guide surface 22 opposite the roll 1. In addition, the parts to be joined include a nozzle strip 23 which together with a nozzle 20 strip 21 forms a dispensing barrier 24 located at the upper end of the supply barrier 10 through which the liquid or pasty material is removed.

«I <t;

In the embodiment of the dispensing device shown in Fig. 2, the I (V 25 nozzle strips 21 and 23) to be joined are shaped such that the metering locks 24 form an approximately right angle together with: · 1 · the feed ridge 10. Instead of this preferred embodiment 9, however, may be shaped in any other desired manner.30 In addition, parts may be used to adjust the nozzle bar 21 or nozzle bar 23 relative to the nozzle bar opposite to change the dosing barrier 24.

• The spreading device is also fully equipped with a cable: 1 ·. 35 disability zoom and tilt.

♦ • 1 1, · .1 Spreading means that can be moved approximately radially towards or away from roll 1 by means of the approximation part «· · 10 10 9 677. For this purpose, the entire device assembly is attached to the handle shaft S, the right-hand side end is suspended on a solid support L such that it can be pivoted up and down around the axis of rotation D colo-5 double arrow Z direction.

In addition, the spreader may be pivoted about an axis parallel to the axis of the roll by means of a tilting portion and thus the position of the spreader chamber 12 or the free jet nozzle 10 relative to the material web or roll surface. Therefore, the entire device assembly is pivotable by a lever arm S about an axis in the center of the parallel scraper bar, in the embodiment of this example, as shown by the double arrow K in the figure.

15

Since the applicator of Fig. 2, which acts as a free jet nozzle, is "higher" than the applicator of Fig. 1 with a dispensing chamber, the applicator must be moved a little farther from the roll 1 by means of an approach portion.

Although in the preferred embodiment of the first example shown in Figures 1 and 2, the spreader device is about "seven o'clock positions" relative to roller 1, Figures 3 and 4 show another * <1V 25 example of an embodiment where the spreader device is in roller 1 * : 1 · is about "three o'clock". This dispenser also has a support bar 30 serving as a base for the individual parts of the dispenser and a dispensing tube 31 through which the liquid or pasty material is fed.

30

The assembly further comprises a front wall 32 and a rear wall 33 surrounded by a feed ridge 34. The feed ridge, in turn, is connected to a distribution pipe 31 through supply channels 35. The liquid or paste material entering through the feed tube 31 can therefore be fed through the feed channels 35 as shown by the arrows.

ψ ♦ · ♦ · • ·

As in the embodiment of the first example, the special feature of the second pre-· 9 · · 16 106967 character embodiment is also based on the fact that the basic assembly group is formed in the region of the front wall 32 and rear wall 33 so that the attached parts are removably secured to form a spreading device (cf. Figure 3) or to form a spreader device in the form of a free jet nozzle (cf. Figure 4).

As in the embodiment of the first example, the components of the basic assembly group of the spreading device 10 are depicted in Figures 3 and 4, while those forming the spreading chamber (Figure 3) or free jet nozzle (Figure 4) are merely outlined. Also in the embodiment of this example, the attachment parts of the parts to be joined can be shaped in many different ways. The fasteners are therefore shown only in broken lines in Figures 3 and 4.

As shown in Figures 3, the attachable parts for forming a spreading chamber consist of an attachable scraper bracket 20 with a scraper 37 and an adjusting member 38. The attachable parts in the region of the front wall 32 ... also include an attachable patio 39 having an overflow surface 40 channel 41 to which the excess collection and removal section 42 'joins. The jet device 43 ensures the flow of excess liquid: 25 or pasty material through the outlet channel 41.

In the embodiment of the second example, the detachably engaging portions for forming the spray jet in the form of a free spray nozzle are shown in Fig. 4 and they. . ·. consist of an attachable nozzle strip 44 which is • • «!!! mounted on the front wall 32, and a nozzle strip 45 attached to the rear wall. The fastening portions of the nozzle strips 44 and 45 to be attached are shown by dashed lines only in Figure C. \ * 35 4.

Of course, the embodiment of the second example shown in Figures 3 and 4 also has an approach and tilt portion, but is not included in the figures for clarity.

The embodiment of the second example further comprises parts which are not described and which are important for operation but not necessary for the understanding of the invention.

In the two exemplary embodiments of the previously described example, the parts to be joined to form either a spreader with a Levi chamber or a spreader with a free jet nozzle are shaped such that the direction of rotation of the roll 1 can be maintained at each variant.

However, the parts to be joined can be shaped such that shifting from one applicator configuration to another means a change in the direction of rotation of the roller 1 which acts as a counter roll in the direct spreading mode and the spreading roll in the indirect spreading mode. The structure of the parts to be connected which allows the direction of rotation of the roll to be changed is illustrated in the embodiment of the third example described in Figures 5 and 6.

In the embodiment of the third example of Figures 5 and 6, the parts of the spreading device are denoted by reference numerals ·: ··: 25 as in the embodiment of the first example of Figures 1 and 2. Therefore, for similar parts, reference is made to the · · ·: Y: previous explanations.

In this embodiment of the third example, there is again a set of basic structures 30 which remains unchanged. in both versions of the spreading device, which in turn are executed by removable parts. The basic structure group includes a support beam 3, only a part of which is shown in the figures. On top of the support beam 3 is a dispensing tube 4 through which the liquid or paste material to be applied is fed.

«· ·. V The distribution pipe 4 has a rear or inner wall 5 and • · · · ”attached to the same area.” ··· * 5A and 26 are also connected to the same area. The support beam 3 also has a front or outer wall 18 106967 9 which forms a supply rail 10 together with a rear or inner wall 5. The liquid or pasty substance passes from the dispensing tube 4 through the supply channels 11 into the supply gutter 10, from which the substance is supplied to the application part 5 attached to the infrastructure group. An excess collection and removal section 20 for the liquid or pasty material is mounted on the front or outer wall 9.

In the variant of Figure 5, parts to be joined to the basic assembly group are provided to form a spreading device in the form of a spreading chamber 12. The cabinet support portions 13, 13A and a further portion 25 are connected to the region 5A of the rear wall 5. The scraper carrier portion 13A supports a scraper 14 in the form of a rod scraper. The scraper carrier portions 13 and 13A form a jointed or angled support together. The attachment part 25 supports an adjusting member 15, which is known per se, by means of which the scraper 14 supported by the support part 13A can be adjusted closer to or away from the roller 1. The regulator is indicated by arrow 15.

20 ... Attachable part in the form of a dike or a stop molding 17 ···. is attached to the area of the front wall 9. The patio strip 17 defines the application chamber 12 together with the scraper support portions 13, 13A and * · * 'scraper portion 14. Outside the main list 17, there is an overflow surface 18 through which excess liquid or pasty material can flow further from the application chamber to the excess collection and discharge section 20.

Track 1, which serves as a spreader indirect levitystavas SA-30 and its counter direct application mode, rotates in the direction of the arrow 2 of Figure 5, levityskammiolla equipped • · · "I variant.

As shown in FIG. 6, to provide a spray device modification with a free jet nozzle 35; The essential parts 13, 13A, 14, 17 and 25 have been replaced by the attachable parts 21 and 23. The attachable part *** 21 in the form of a nozzle strip is located in the region 5A of the rear wall 5, and in the form of a connecting part 23 is located in the region of the front wall 9. The two nozzle strips 21 and 23 are shaped such that metering locks are formed between them and the free concave curved surface 22 defines the kid through the nozzle strip 5 21. The liquid or paste material to be applied leaves the application portion in the form of a free jet whose curved surface 22 directs in the correct application direction relative to the surface of the roll 1.

Also shown in the figure is an adjusting device 15 by means of which the nozzle strip 21 can be moved towards or away from the opposite nozzle strip 23 for adjusting the metering bar 24.

The backing roll 15 and applicator roll 1 rotates in the direction of arrow 2 of Figure 6 in the direction of the free jet nozzle applicator device equipped with inter-dose. To enable rotation of the counter roll or the spreader roll 1 to change from spreader to tool change to another, the roll drive is provided with a rotary rotation transducer not shown.

• * e • I

t *

Proper design of joints and roller 1

M l I I

due to the change of direction of rotation, the actuators, especially the control device 15, remain on the same side of the coating machine 25. With both variants, operating personnel, operating and adjusting devices are on the same operating • side of the coating machine, which also makes changing the equipment type faster and easier.

In this embodiment of the third example, there is also an approximation. . ·. • tilt and tilt, although not shown, for clarity. For the sake of clarity, also necessary for use, but not necessary for the understanding of the invention: * Parts are omitted from Figures 5 and 6.

35 • · ·; . ·. A fourth example of an embodiment of a spreader device according to the invention is shown in Figures 7 and 8. Corresponding parts of a spreader device are designated by the same reference numerals as in the embodiment of the first example of Figures 1 and 2. Therefore, with respect to sections 3, 4, 5, 6, 7, 8, 9, 10 and 11, reference is made to the explanations given in connection with the embodiment of the first example.

5 For the positions D, K, L, S and Z of the approximation and tilt section, reference is also made to the description of the embodiment of the first example.

7 and 8, there is a common attachment part 2IA which is mounted in the region 5A of the rear or inner wall 5. 7, this common attachable portion 21A serves as a nozzle strip and, together with a nozzle strip 23 mounted in the region of the front or rear wall 9, forms a metering bar 24 which functions as a free jet nozzle. The attachable portion 2A is shaped such that it has a concave folding surface 2 which engages a dispensing lock 24 that directs a free jet of liquid or pasty material 20 in the desired direction relative to the surface 1 of the roll 1.

'Parts 25A, 26A and 27A make up the dispenser

«I

24. Adjusting screws 26 over the entire width of the machine and attached to a strip 25A mounted on a section 25A mounted to the frame 25A can move the top of the nozzle strip 21A closer to or away from the nozzle strip 23. For this purpose, the nozzle strip 2AA has a thinner portion at the center portion which allows for a certain degree of deformation of the top of the nozzle 2. The top of the nozzle strip 2IA may also be reshaped with respect to the lid 27A connected securely to the strip 25A schematically Of course, an adjuster other than that described in this example can also be used.

: ***: 35 «· *. Y counter roll or applicator roll 1 rotates in the direction of the arrow 2.

• * YY Following the spreader roller with free jet nozzle, viewed in the direction of rotation of the roll, there is a fine dispenser F, 21 106967, which dispenses a dispersed coating of liquid or paste material with a fine dispenser scraper.

Fig. 8 shows an embodiment of a fourth example of a dispenser with a spreader chamber in which the basic assembly as well as the common attachment part 21A are retained as in the spreader apparatus of Fig. 7 with a free spray nozzle. The strip 25A 10 and the screws 26A are also left in place, but the adjusting screws have no function in the conversion chamber. Instead of the cover 27A, the common attachment portion 21A is secured to a patio rail 17, and the strip 25A is securely secured thereto by means of attachment portions (15 schematically shown only). The outer surface of the patio strip 17 has an overflow surface 18 to which an excess collection and removal section 20 is connected.

The scraper bracket portions 13 and 13A, as well as the scraper 14 in the scraper bracket portion 13A, are secured to the area of the front or outer wall 9. Scraper carrier portions 13, 13A, scraper "* 14 and patio rail 17 defines application chamber 12. In conjunction with the scraper, the portion 21A which engages the bale in a variant with the spray nozzle in the pattern" * · "' According to the embodiment of this example, there is also known an adjusting device for moving the scraper 14 closer to or away from the roll 1. In this embodiment of the fourth example, the direction of rotation 30 of the roll 1 (see arrow 2). remains unchanged in both variants.

* ♦ i ·· • · · 9 ·. The previously described embodiment of the fourth example: is quick and easy to change from one variant to another because the attachment part 21A is suitable for both variants and. V can therefore be combined with an infrastructure group. The change • · '1' ./ conversion to one can thus be made with fewer replaceable parts.

22 106967

A fifth example of an embodiment of a spreader device of the invention is shown in Figure 9, where the basic structure of the spreader device consists of a group of basic devices and a spreader device located therein in the form of a free jet nozzle.

5

The basic assembly consists of a support beam 3 which supports the individual parts of the applicator, a distribution tube 4 through which the liquid or pasty material is fed. The support beam has a rear or inner wall 5 extending approximately 10 radially toward the roll 1 and continuing as a wall of the dispensing tube 4 in the embodiment of this example. In the lower part of the wall 5 there are support plates 6 below the dispensing tube 4 which support the bearing pins 7. The front wall plates 8 supported by the bearing pins 7 are attached to the front a feed rail 10, which position is also approximately radial to the roll 1.

20

The feeder itself 10 is connected to the inside of the distribution tube 4 through a plurality of supply channels 11 passing through the wall of the distribution tube 4. The liquid or paste material entering through the distribution tube 4 can therefore be fed through the supply channels 11 via the supply channels 10, as indicated by the arrows a! ·, «.

• e * · »· · *

The front wall 9 has a lip 12B at its end away from the bearing pins 7, which defines a free spray nozzle metering bar 30 13B.

* *

Above the support beam 3, against the roll 1, is a lip 14B

\. on a curved, bent surface 15B which together with the lip 12B

• ♦ »* · forms a free spray nozzle dispensing bar 13B.

35 rt ·: V The structure described above constitutes a spreading device with a free spray nozzle r i V .. * of known principle.

Liquid or paste material fed through dispensing tube 4 flows into this free jet nozzle assembly via inlet ducts 11 through supply inlet and dispensing lock 13B and exits in the form of a free spray or direct spraying of the material by direct bending of the bent surface 15B in the indirect application mode against the roller 1 acting as the application roller. Thus, the previously described basic structure provides a functional spray jet applicator from which, of course, the other components added to the lip sections 12B and 10 14B have been removed.

The entire applicator is equipped with a proximity and tilt portion shown schematically. The applicator can be moved approximately radially towards the roller 1 and 15 away from it by means of a proximity member. For this purpose, the entire device assembly is attached to the handle shaft S, the right-hand side end is suspended on a solid support L such that it can be pivoted up and down around the axis of rotation D of the double arrow Z direction. In addition, the spreader may be pivoted about an axis parallel to the axis of the roll by means of a tilting portion, and thus the angle of the spreader to the material web or roll may be adjusted. To this end, in the embodiment of this example, the entire assembly is pivotable by a lever ... s about the center axis of a portion 2OB parallel to the axis of the roll, as shown by the double arrow K. The portion 2OB is illustrated by · · · * ·: · * At a later stage for more details.

30 In the previously described modification having two lips 12B

and 14B, the associated roll position is indicated by a dashed line. When applying the spreading device / · 35 in the form of a free jet, after the spreading device, · ·: *, you look at the roll direction (marked with arrow 2). - fine dispenser F. This can also be used, • if necessary, with a dispenser equipped with a spreader chamber • «· · • · · 24 106967.

As previously described, when converting the above configuration to a spreader chamber 5, the previously described spreader should, according to the old practice, be completely removed, i.e. together with the infrastructure group, and replaced by a new spreader chamber. This laborious removal and reinstallation of the present invention is no longer necessary. Namely, according to the present invention, only the actual parts responsible for the application of the liquid or paste material need to be modified as described below and shown in Figure 9.

As shown in Figures 9, the lips 12B and 14B, according to the present invention, are arranged so that elements can be removably attached thereto to form a spreading chamber for a liquid or pasty substance. The conversion of a spreader device with a free jet nozzle into a spreader device with 20 spreader chambers requires only the mounting of the scraper portions 18B and 19B on the lip 12B and the dowel 16B on the lip 14B.

In this case, the removable attachment pathol ... 25 16B has an overflow surface 17B that leads to excess collection and »« · *. discharge section 23B. After installing these attachments, a spreading device according to Fig. 9, equipped with a spreading chamber, is obtained.

The scraper carrier portions 18B and 19B are divided into a scraper holder 18B and a scraper body 19B where a scraper bar 20B in the form of a scraper bar is located. The scraper 19B can be adjusted with a scraper. with the adjusting device 2IB relative to the holder 18B according to the requirements set in each case. As previously described, • · 35 the entire assembly can also be rotated by means of a tilting member • 'around the axis of the doctor blade (or by using a doctor blade, • · * * around the effective edge of the blade),:. as indicated by the double arrow K. The scraper body 19B and the * 1Ö6967 25 portions of the scraper holder 18B together with the dowel bar 16B form a dispensing chamber 22B, from which liquid or pasty material is applied through the scraper 2OB to the surface of the roll 1 or the web of material. Excess liquid-5 or pasty-like material flows out of the spreading chamber 22B over the dike bar 16B and further through the overflow surface 17B for further collection and discharge section 23B for further treatment.

The attachable parts in the form of scraper brackets 18B and 19B and dowel rail 16B are quick and easy to handle and can be easily mounted and disassembled to convert a spray jet applicator into a spray chamber 15 as shown in Figure 9, and vice versa.

As a dispensing device that basically works in free mode

shower nozzle, is lower than the spray chamber 22B

equipped, the applicator must be moved closer by the proximity portion when operating with the free jet nozzle and pulled further when operating with the application chamber. With free jet or diffuser ··. the optimum angle of the spreading device with roller «« «.... · 1 can also be adjusted by means of an inclined • · ··· 25 inch.

• · I

• ·

A sixth example of an embodiment of a spreading device according to the invention comprises the basic structure shown in Figure 10.

t · 'The basic structure consists of a group of basic structures and a spreader device arranged thereon.

. : For parts 3, 4, 5, 6, 7, 8, 9, 10, and 11 of the Basic Group, reference is made to the explanations given in connection with the fifth embodiment of Example 35 of Figure 9. With reference to ♦ 'and D, K, L, S, and Z of the tilting section, reference is also made to the preceding explanations. Corresponding parts are denoted by the same reference numerals in the fifth and sixth embodiments.

The front or outer wall 9, at the end away from the support shaft 7, is formed as a pathol 12C and its outer surface forms an overflow surface 13C. The overflow surface 13C forms, after the front wall plate 8, an excess collection and discharge section 14C.

Attached to region 5C of the rear or inner wall 5 is a bracket 18C of the scraper 10 which carries a scraper 17C in the form of a blade. The scraper 17C is held in the scraper bracket 18C by the clamp 18C and can be moved closer or farther away from the surface of the material web or roll surface by the adjusting device 19C parallel to the strip 16C.

15

Scraper bracket 18C and associated doctor blade 17C and dowel 12C delimit application chamber 20C. Such a dispenser with a Levi cell chamber, as described previously, is known in principle. The liquid or paste liquid fed through the distribution pipe 4 flows through the supply channels 11 into the supply chamber 10 and further into the application chamber ... 20C formed by the path bar 12C and the scraper 17C. Excess liquid or pasty material flowing over patrol strip 12C along overflow surface 13C

«MO

25 for collection and disposal 14C for processing.

* i t • · «***: The applicator can be rotated about an axis parallel to the axis of the roller by means of a tilting portion and thus • ·; the angle of the scraper 17C with respect to the material web or roll surface 30 can be adjusted. As a result, the entire assembly is pivotable by a lever arm s about a parallel axis which is approximately the active blade of the scraper 17,. direction as shown by double arrow K in the figure.

As described above, when the above-described configuration is changed to a diffuser with a free jet nozzle, the diffuser provided with the application chamber illustrated in Fig. 10 would be: according to the old practice, 27 106967 should be completely removed, i.e. together with the infrastructure group including the support beam, manifold, spacers and other parts, and replaced with a new spray device with a free jet nozzle. This laborious removal and reinstallation is no longer necessary according to the present invention. Namely, according to the present invention, only the actual parts responsible for the application of the liquid or paste material need to be modified as illustrated in Figure 11. The basic assembly group, i.e. the support beam, the distribution pipe and the required spacers, can therefore be left in place, and according to the invention the assembly can be used both with a free jet nozzle and with a distribution chamber. Only special attachments that are fast and easy to attach will be replaced with the change.

As shown in Figures 11, the barrel 12C of the front wall 9 and the scraper support 18C are shaped to attach the removable parts to form a free spray nozzle 20. To change the applicator provided with the applicator of Fig. 10 to the applicator with the free jet nozzle, it is only necessary to install the nozzle .1 · '21C molded part into list 12C and «1 ... .... another nozzle list 24C on the scraper support 18C. The second nozzle strip then forms a metering bar 25C with the mouthpiece 21C, which acts as a free jet nozzle. In the exemplary embodiment, the metering • 1 * ·: · 1 aperture 25C and the feed piston 10 together form an approximately V right angle. The nozzle strip 21C has a free concave folded surface 22C which is aligned with a metering lock 24C and folds a free jet of liquid or pasty material in the desired direction relative to the surface of the roll or material web. Only-; 1 roll or spreader roll 1 rotates in the same direction in each of t · · .1: 1 transforms as shown in Figures 10 and 11, as indicated by 35 arrow 2.

ψ · • ♦

«I I

In the example, the nozzle strip 21C is secured with fastening screws 23C, but there are many different ways of installing the attachable parts to form a free jet nozzle.

The nozzle bar 24C is secured to the tensioner 18C of the scraper bracket and 5 is adjustable relative to the opposite nozzle bar 21C by adjusting means 19C passing through the bar 16C to adjust the metering bar 25C.

The joining parts 10 in the form of nozzle strips 21C and 24C are easy and quick to handle and easy to install and remove to convert a basic device with a spreader chamber as shown in Figure 10 into a device with a free jet nozzle as shown in Figure 11 and vice versa.

15

Since the applicator of Fig. 11 provided with a free jet nozzle is "higher" than the applicator of Fig. 10 provided with a applicator chamber, the applicator must be moved slightly farther away from the roll 1 20 by means of a convergence portion.

• · »1» ·

Claims (26)

29 106967 Apparatus for applying a free jet nozzle arrangement for directly or 5 indirectly moving a liquid or pasty material onto a web of moving material, in particular paper or board, comprising a base structure having - a support beam (3; 30) extending across the web over its entire width; and 10. a dispensing section (4, li; 31, 35) for supplying a liquid or pasty material to a feed web (10; 34) extending across the web across its width and defining the front wall (9; 32) and the rear wall (5; 33), characterized in that the region (5, 5A, 9; 32, 33) of the front wall and rear wall 15 of the basic structure group is arranged to be removably connected to parts (13, 13A, 14, 17; 36, 37, 39; 21, 21A, 23; 44, 45) for forming a dispensing chamber (12) or for forming a metering barrier (24) which functions as a free spray nozzle 20 for a liquid or pasty substance. I «« I A dispenser according to claim 1, characterized in that the attachable parts for the dispensing chamber (12) or the dispensing spout (24) of the free jet nozzle; 25 consist of one or more parts. I I I i i i «i« • Application device according to Claim 1, characterized in that at least one attachment part (2IA) * M] ... # can be used to connect both the application chamber (12) and the connection of the free spray nozzle metering bar (24). • »* · • M • · · s ##>: A spreading device according to claim 1, characterized in that the common attachment part (21A) is integral with the infrastructure group. ** "35 Spreader device according to claims 1-4, characterized in that the attachable parts for forming the spreader chamber (12) comprise a scraper bracket 30 106967 (13, 13A, 36) with a scraper (14; 37) and a dowel bar (17; 39). Spreader device according to Claim 5, characterized in that the attachable parts for forming the spreader chamber (12) 5 comprise an overflow part (18, 20; 40, 41, 42) in the region (17; 39). A spreader device according to claim 6, characterized in that the overflow section has an excess collection and discharge section (20; 42) which abuts the overflow surface (18; 40, 41). Spreader device according to any one of claims 1 to 7, characterized in that the attachable parts (21, 15 2IA, 23; 44, 45) for the free spray nozzle dispensing stop (24) are essentially strip or lip-shaped. A dispenser according to any one of claims 1 to 8, characterized in that the attachable portions 20 for forming the free spray nozzle dispensing bar are shaped such that the concave, free, folded surface (22) for a liquid or pasty substance coincides dosing II v: to the free end of the kid (24) on one side of the kid I ( Spreader device according to any one of claims 1 to 9, characterized in that the attachable parts for forming the free spray nozzle dispensing bar are shaped such that the dispensing locks (24) together with the feeding flow (10) form an approximately right angle to the • · · for a 30 or pasty substance. * * * ... *: The le-* of any one of claims 1-10. A tapping device, characterized in that it is equipped with. ; with a zoom and / or tilt section (D, K, L, S, Z). * · · * * 35 Apparatus for applying a liquid or paste material directly or indirectly to a moving web of material, in particular paper or board, comprising a substructure group comprising: - a support beam (3) extending across the web over its entire width; and - a dispensing section (4, 11) for supplying the liquid or pasty material 5 with a feeding roll (10) extending across the web along its entire width and defining the front wall (9) and the rear wall (5) and having lip sections in the front and rear wall region; 12B, 14B) forming a metering barrier (13B) acting as a free jet nozzle 10 for a liquid or paste, characterized in that the lip portion region (12B, 14B) is arranged to be removably attached to portions (12B, 14B). 16B, 18B, 19B, 20B) to form a spreading chamber (22B). 15 Apparatus according to claim 12, characterized in that the lip parts (12B, 14B) forming the free spray nozzle are at least partially releasably connected to the front and rear wall region (5, 5B, 9). 20 < A spreading device according to claim 12 or 13, characterized in that the attachable parts for forming the spreading chamber (22B) consist of one or more parts. 25 Spreader device according to any one of claims 12 to 14, characterized in that the attachable parts for forming the spreader chamber (22B) comprise a scraper bracket (18B, 19B) with a scraper (20B) and a patio strip 30 (16B). The spreading device according to claim 15, characterized in that it is 4. *. ·. characterized in that the attachable parts for forming the spreading chamber (22B) comprise an overflow part (17B, 23B) in the region of the pathola (16B) 35. Spreader device according to Claim 16, characterized in that the overflow section has an excess collection 32 3296967 and an outlet section (23B) which abuts the overflow surface (17B). Spreading device according to any one of claims 15 to 17, characterized in that the scraper bracket (18B, 19B) consists of several parts. Spreading device according to any one of claims 12 to 18, characterized in that it is provided with a proximity and / or tilt part (D, K, L, S, Z). 10 A spreader device with a free jet nozzle arrangement for directly or indirectly applying a liquid or pasty material to a moving web of material, in particular paper or board, comprising a base assembly having - a support beam (3) extending across the web across its entire width; and - a dispensing section (4, 11) for supplying the liquid or pasty material with a feed roll (10) extending across the web, 20 across its width, defining the front wall (9) and rear wall (5), and a front and rear wall The '' region (5, 5C, 9) has v parts forming a spreading chamber (20C) including a scraper support (18C) with a scraper (17C) and a <pathol (12C), · ,; : 25 characterized in that the scraping support (18C) and the patrol strip i '.; The (12C) region is arranged to be removably coupled to portions (21C, 24C) to form a dispensing barrier (25C) acting as a free jet nozzle. * * t 30% 4 A spreading device according to claim 20, characterized in that the spreading chamber (20C) is formed by *, V. the components are at least partially releasably coupled to the front ·. : and to the rear wall area (5, 5C, 9). * * t '' 35 A dispenser according to any one of claims 20 or 21, characterized in that the attachable parts (21C, 24C) for forming the free spray nozzle dispensing barrier (25C) 33 106967 are substantially in the form of a strip or a lip. Levi-5 dispenser according to any one of claims 20 to 22, characterized in that the parts (21C, 24C) for forming the free spray nozzle dispensing barrier are shaped such that the concave, free, folded surface (22C) for the liquid or paste material (25C) on the free end on the other side of the barb. 10 A dispenser according to any one of claims 20 or 23, characterized in that the attachable parts for forming the free spray nozzle dispensing barrier (25C) consist of one or more parts. 15 A spreading device according to any one of claims 20 to 24, characterized in that it is provided with a proximity and / or tilt part (D, K, L, S, Z). <> _ 20 A spread according to any one of claims 20 to 25; An apparatus as claimed in claim 1, characterized in that the connecting parts (21C, 24C) for forming the free spray nozzle metering bar (25C) are shaped such that the metering barrier (25C). f I! ! together with the feed barrier (10), forms an approximately right angle for the liquid or pasty material. • ·> 1 2 * · 1 »il» I I * · · m • 1 * »« M ** «*: * · 1 t *% I · I •» · • 1 {• <2 «• · 34 106967