EP0728241B1 - Mechanism for directly or indirectly applying a liquid or pasty medium onto a moving strip 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

The invention relates to orders for direct or indirect application of a liquid or pasty medium a running material web according to the generic terms of independent claims 1, 12 and 20.

Such known commissioned works are for their respective Purpose specially designed. For one thing Free jet nozzle works built in which the liquid or pasty medium through a metering gap in a free one Beam is applied. With a direct order, the free one hits Beam on the running web of material, while indirect Application of the free jet applied to an application roller is from the surface of the liquid or pasty medium is transferred to the running material web. On the other hand are commissioned works built with an order chamber, at which the liquid or pasty medium from the chamber over a Dosing element, for example a doctor element, applied becomes. In the case of a direct order, the medium is immediately transferred to the running material web applied, with indirect application however, the medium is first placed on an applicator roller applied and from their surface to the current Transfer material web.

A conventional application unit with a free jet metering gap is for example in the Canadian Patent application CA-A-2,101,358. Such a thing Application unit with free jet nozzle is relatively uncomplicated operate, it has no real wear parts and is therefore relatively easy to maintain. It is only for Throughput speeds up to approx. 1500 m / min. suitable, has however, a low frequency of demolition and is suitable especially for sensitive, i.e. thin papers.

A conventional commissioned work with an order chamber is, for example, in the European patent application
EP-A-0 496 946. Such an application unit with an application chamber is suitable for higher throughput speeds (> 1500 m / min.) And brings about a greater depth of penetration due to the pressure in the application chamber. In addition, such an application unit is suitable for low coat weights and enables clean coverage.

Depending on the application, the suitable coating units installed in a coating machine become. If the purpose of the Coating machine the use of another commissioned work requires the complete commission be replaced. Such a complete conversion is very much time consuming and complicated.

The invention is therefore based on the technical problem to create a new commissioned work that is quick and easy can be easily converted.

According to the invention, this technical problem is solved by one Commissioned work with the features of claim 1, of a commissioned work with the characteristics of the subordinate Claim 12 and from a commission with the Features of the independent claim 20 solved.

The invention is based on the idea of a commissioned work create that in the case of a renovation not completely, i.e. including the support beam, the distribution device for the liquid or pasty medium, the connection and Adjusting devices and other devices exchanged must become. In the solutions according to the invention subsidiary claims 1, 12 and 20 are only those elements exchanged or supplemented or removed, which immediately apply the liquid or pasty Serve medium. One designed according to the invention Commissioned work thus includes a basic assembly that both in connection with a free jet nozzle arrangement as well as in Connection with a doctor element application chamber arrangement in the Use remains. This basic assembly includes the support beam including the distributors for the liquid or pasty medium for these aforementioned elements necessary connection and adjustment devices and the Front and back wall to form the feed gap including the feed channels for the liquid or pasty Medium from the distribution devices into the feed gap.

According to the solution according to the invention according to claim 1 are those immediately applied to the liquid or pasty Media serving elements to the previously explained Base assembly can be added. With these immediately the order on the one hand, the elements serving the medium are Add-on elements for forming an order chamber, that is for example around a doctor carrier with a doctor element and a storage rail, and on the other hand add-on elements that a metering gap acting as a free jet nozzle between them limit. The basic assembly thus serves as a platform on the modular either the add-on elements to form a Order chamber or the add-on elements to form a Free jet nozzle metering gap can be attached. Building on the The basic assembly can alternatively be the order chamber variant or the free jet nozzle variant for that Realize commissioned work.

The extension elements and belonging to the order chamber variant the add-on elements belonging to the free jet nozzle variant can each be installed as a finished module and can be exchanged for each other, or they can each be in Form of individual add-on elements. In the event of of multi-part, individual add-on elements also advantageously designed common add-on elements be that for both the order chamber variant as well for the free jet nozzle variant in the same construction position Find use. Such a common add-on element, that, for example, in one construction variant is part of the Free jet nozzle metering gap and in the other variant forms part of the order chamber, can also be fixed with the Basic assembly connected and, if necessary, in one piece with this be trained.

In the solutions according to the invention according to the subordinate ones Claims 12 and 20 are those in the second Application unit variant immediately after the application of the liquid or pasty medium serving elements in themselves Functional already in the first commissioning variant Commissioned work can be set up. According to the invention, a functional commissioned work consisting of a Basic assembly and an order chamber arrangement or one Basic assembly and a free jet nozzle arrangement, on which the other commissioned work variant is based is convertible by using this other variant immediately after applying the liquid or pasty medium serving elements in addition to the given commission be grown.

So if an order is based on a Basic assembly with an order chamber, the Conversion into a free jet nozzle work by adding corresponding free jet attachment elements in the area of Components that form the order chamber. At a Application chamber with a squeegee carrier and a baffle bar So, for example, lip elements on the doctor blade carrier and the damming bar attached to create a metering gap training that acts as a free jet nozzle.

Is based on a commissioned work that consists of a basic assembly and a free jet nozzle arrangement, are in analog Way to the case described above with one Order chamber order work immediately after the order of the liquid or pasty medium serving elements on the Area of the free jet nozzle arrangement. So if for example the free jet nozzle gap by two Lip elements is formed, for example Add-on element with a squeegee carrier and a squeegee element as well as an add-on element to form a storage ledge attached so as to obtain an order chamber.

In both of the above-described inventive So solutions remain the same in every modification Basic assembly as well as the one immediately applying the liquid or pasty medium serving elements of the one, receive the underlying commissioning plant variant. The conversion in the second application variant is done by adding the at the second variant immediately after applying the liquid or pasty medium serving elements, the reconstruction in the The first variant is done by removing these elements. The for order chamber arrangement belonging to the respective basic order work or free jet nozzle arrangement can with the basic assembly either completely solvable or at least partially be connected in one piece. Only one is required initially Detachability of those add-on elements that are additional the basic commissioned work variant establish.

In the solutions according to the invention according to the subordinate ones Claims 1, 12 and 20 must for a conversion of a Application chamber application unit in a free jet application unit and vice versa only certain Add-on elements that are easier and faster to handle be added or removed and not, as before, the complete Commissioned work including supporting beams, distribution devices, Adjustment devices etc. can be replaced. Thereby According to the invention, this results in a significantly more time-saving Change of order type with a coating machine, what about a more economical and versatile use of the Coating machine leads.

According to the invention, the add-on elements can be used for implementation an application chamber arrangement or a free jet nozzle arrangement be designed in such a way that when converting from one in the other variant a change of direction of rotation assigned counter or application roller results. Naturally the attachment elements can also be designed so that at both conversion variants the direction of rotation of the assigned roller, that with direct application as counter roll for the continuous Material web and in the case of indirect application as an application roller acts, can be maintained. An embodiment of the Add-on elements such that the direction of application with respect to assigned roller and thus the roller rotation direction changes, can, however, be advantageous in that the Operating devices, i.e. especially the Adjustment devices for the directly the order of the serving liquid or pasty medium Application devices, such as metering gap or Doctor blade adjustment devices, in both Order variants on the same operator side of the Coating machine can be maintained.

Advantageous embodiments of the Solution according to the invention explained according to claim 1.

Depending on the appropriate constructive Design are the add-on elements for the order chamber or the free jet nozzle metering gap in one or more parts educated. When forming multi-part add-on elements it may be appropriate that a common attachment is designed so that it is in the same mounting position both when adding the order chamber and when attaching the Free jet dosing gap can be used. Such one common add-on element can be detachable with the basic assembly connected, but it can also be solid or even in one piece be connected to the base assembly. If such common add-on element can be designed, is reduced corresponding to the number of add-on elements required for a conversion converted from one to the other commissioning unit variant must be, and thus the conversion is easier and faster from.

Expediently include the add-on elements for training the application chamber a doctor blade with doctor element and a Storage bar. Furthermore, the add-on elements for Training an order chamber expediently a Overflow device in the area of the storage rail. Preferably the overflow device has an excess collection and -discharge device on an overflow surface connects.

The add-on elements for a free jet metering gap have expediently essentially a strip or lip-shaped shape.

In a favorable embodiment, the attachment elements for designed a free jet metering gap in such a way that to the free end of the wall on both sides Dosing gap on one side a concave free Deflection surface for the liquid or pasty medium connects. With such a free deflecting or guiding surface, the free one Jet of liquid or pasty medium in an advantageous manner Be directed in a desired direction.

Another expedient embodiment of the invention exists therein, the add-on elements for forming the free jet metering gap to design such that the metering gap with the Feed gap for the liquid or pasty medium about one right angle.

The front and back panels of the base assembly, which are also called Outside and inside wall can be referred to in be designed in various ways. However, it is favorable to the areas of the front and rear wall shape that the appropriate attachment elements simple and can be placed and attached precisely. In the case, that attachments to removable parts in the area of Front and rear wall should be placed, it can be cheap be such parts in one piece with parts in the area of Form front and rear wall. In other words, it can According to the invention, the parting plane between the base assembly and the elements attached to it to form a Application chamber arrangement or a free jet nozzle arrangement also run within the front and rear wall areas. Parts of the front or rear wall and adjoining them Area can also be assigned to the add-on elements, and thus when converting from one to the other variant be replaced.

As before in connection with a common Attachment described, on the other hand, the parting line between the basic assembly and the add-on elements Training of the order chamber arrangement or Free jet nozzle arrangement so that on the area of Front and / or rear wall attached or in one piece there continued components are always preserved during the conversion and are therefore part of the basic assembly. For example a section adjoining the rear wall area or an element placed there for both conversion variants be maintained by making part of the Free jet dosing gap and the other part the order chamber forms.

Such configurations in which areas of the front and / or rear wall as well as adjacent areas of the Add-on elements are formed and removed with them to be installed are also part of the invention Solution according to claim 1. Likewise, such belong Refinements to the solution according to the invention Claim 1, in which over the area of the front and Partitions going out or attached to the rear wall Elements remain during the remodeling, i.e. where Basic assembly beyond the front and rear wall area is expanded.

The order work is expediently provided with a delivery and / or tilting device so that changes in distance, which is due to the attachment of the different attachment elements for the two order unit variants in relation to the assigned counter or application roller result, compensated can be and the angular position of the Application chamber arrangement or free jet nozzle arrangement with respect to the counter or application roller Conditions can be adjusted accordingly.

Advantageous embodiments of the solution according to the invention Claim 12 explained.

Depending on the appropriate constructive Embodiment are the free jet nozzle forming Lip elements either fixed, if necessary in one piece, or at least partially detachable with the area of the front and Rear wall of the basic assembly connected.

The attachment elements for the formation of an order chamber are designed in one or more parts. Preferably, the Add-on elements for training the order chamber Squeegee carrier with squeegee element and a baffle bar. In a A practical design is in the area of the storage rail Overflow device formed. The overflow device expediently has an excess collection and -discharge device on an overflow surface connects. Another version is the Form doctor blade carrier in several parts.

The application work is preferably with a delivery and / or Tilting device equipped. The delivery device enables a spatial shift of the commissioned work, while the tilting device changes the angular position of the Commissioned work enables. So changes in distance to Counter or application roller can be compensated for due to the different attachment elements when converting one result in the other commissioned work variant. Further can the angular position of the application chamber arrangement or Free jet nozzle arrangement precisely according to the respective Conditions are set.

Advantageous embodiments of the solution according to the invention Claim 20 explained.

Depending on the appropriate constructive Design are the elements forming the order chamber solid, possibly in one piece or at least in part detachably connected to the area of the front and rear wall.

Preferably, the add-on elements for forming the Free jet nozzle metering gap essentially from or lip-shaped shape. It is special advantageous if the add-on elements for training the Free jet metering gap are designed such that to the free end of the wall on both sides Dosing gap on one side a concave free deflection surface connects. With such a concave deflection or guide surface free jet of liquid or pasty medium steer in a desired direction.

Depending on the design suitability, the add-on elements are to form the free jet nozzle gap or formed in several parts. The commission is preferred equipped with a delivery and / or tilting device to Adjustment of the distance of the Application unit for the counter or application roller as well as adjustments the angular position of the application work with respect to the counter or To be able to make application roller. Such adjustments are on the one hand due to the different structural dimensions the add-on elements in both variants and by the different operating principle when applying the liquid or pasty medium via an application chamber or a Free jet nozzle conditional.

In the solutions according to the invention according to the subordinate ones Claims 1, 12 and 20 can attach the Add-on elements are of course made in a variety of ways and depends on the respective structural conditions. The constructive design of the Add-on elements according to the respective application.

Fig. 1

zeigt schematisch ein erstes Ausführungsbeispiel eines erfindungsgemäßen Auftragswerkes mit einer Basis-Baugruppe und daran anmontierten Anbauelementen zur Ausbildung einer Auftragseinrichtung in Form einer Auftragskammer;

Fig. 2

zeigt schematisch das erste Ausführungsbeispiel des erfindungsgemäßen Auftragswerkes mit der Basis-Baugruppe gemäß Fig. 1 und daran anmontierten Anbauelementen zur Ausbildung einer Auftragseinrichtung in Form einer Freistrahldüse;

Fig. 3

zeigt schematisch ein zweites Ausführungsbeispiel des erfindungsgemäßen Auftragswerkes mit einer Basis-Baugruppe und daran anmontierten Anbauelementen zur Ausbildung einer Auftragseinrichtung in Form einer Auftragskammer;

Fig. 4

zeigt schematisch das zweite Ausführungsbeispiel des erfindungsgemäßen Auftragswerkes mit der Basisbaugruppe gemäß Fig. 3 und daran anmontierten Anbauelementen zur Ausbildung einer Auftragseinrichtung in Form einer Freistrahldüse;

Fig. 5

zeigt schematisch ein drittes Ausführungsbeispiel des erfindungsgemäßen Auftragswerkes mit einer Basis-Baugruppe und daran anmontierten Anbauelementen zur Ausbildung einer Auftragseinrichtung in Form einer Auftragskammer;

Fig. 6

zeigt das dritte Ausführungsbeispiel des erfindungsgemäßen Auftragswerkes mit der Basis-Baugruppe gemäß Fig. 5 und daran anmontierten Anbauelementen zur Ausbildung einer Auftragseinrichtung in Form einer Freistrahldüse;

Fig. 7

zeigt schematisch ein viertes Ausführungsbeispiel des erfindungsgemäßen Auftragswerkes mit einer Basis-Baugruppe und daran anmontierten Anbauelementen zur Ausbildung einer Auftragseinrichtung in Form einer Freistrahldüse;

Fig. 8

zeigt das vierte Ausführungsbeispiel des erfindungsgemäßen Auftragswerkes mit der Basis-Baugruppe gemäß Fig. 7 und daran anmontierten Anbauelementen zur Ausbildung einer Auftragseinrichtung in Form einer Auftragskammer;

Fig. 9

zeigt schematisch ein fünftes Ausführungsbeispiel des erfindungsgemäßen Auftragswerkes, welches in seinem Grundaufbau mit einer Auftragseinrichtung in Form einer Freistrahldüse versehen ist und daran anmontierte Anbauelemente zur Ausbildung einer Auftragseinrichtung in Form einer Auftragskammer trägt;

Fig. 10

zeigt schematisch ein sechstes Ausführungsbeispiel des erfindungsgemäßen Auftragswerkes mit einer Auftragseinrichtung in Form einer Auftragskammer;

Fig. 11

zeigt das sechste Ausführungsbeispiel des erfindungsgemäßen Auftragswerkes mit dem Grundaufbau gemäß Fig. 10 und daran anmontierten Anbauelementen zur Ausbildung einer Auftragseinrichtung in Form einer Freistrahldüse.

Exemplary embodiments of the invention will now be explained in more detail with reference to the accompanying drawings.

Fig. 1

shows schematically a first embodiment of an application work according to the invention with a basic assembly and attached elements to form an application device in the form of an application chamber;

Fig. 2

schematically shows the first embodiment of the application unit according to the invention with the basic assembly according to FIG. 1 and add-on elements mounted thereon to form an application device in the form of a free jet nozzle;

Fig. 3

shows schematically a second embodiment of the application unit according to the invention with a base assembly and attached elements to form an application device in the form of an application chamber;

Fig. 4

schematically shows the second embodiment of the application unit according to the invention with the base assembly according to FIG. 3 and attached mounting elements to form an application device in the form of a free jet nozzle;

Fig. 5

shows schematically a third embodiment of the application unit according to the invention with a basic assembly and attached elements to form an application device in the form of an application chamber;

Fig. 6

shows the third embodiment of the application unit according to the invention with the basic assembly according to FIG 5 and attached to it add-on elements to form an application device in the form of a free jet nozzle.

Fig. 7

shows schematically a fourth embodiment of the application unit according to the invention with a basic assembly and attached elements to form an application device in the form of a free jet nozzle;

Fig. 8

shows the fourth embodiment of the application work according to the invention with the basic assembly according to FIG 7 and attached to it add-on elements to form an application device in the form of an order chamber.

Fig. 9

shows schematically a fifth embodiment of the application unit according to the invention, which is provided in its basic structure with an application device in the form of a free jet nozzle and carries attached elements to form an application device in the form of an application chamber;

Fig. 10

schematically shows a sixth embodiment of the application work according to the invention with an application device in the form of an application chamber;

Fig. 11

shows the sixth embodiment of the application unit according to the invention with the basic structure according to FIG. 10 and add-on elements mounted thereon to form an application device in the form of a free jet nozzle.

For direct or indirect application of a liquid or pasty medium on a running material web, such as for example paper or cardboard, are in a known manner Commissioned works used. With an indirect order, this will be liquid or pasty medium from the application in one predetermined layer thickness on the surface of a roller 1 applied in a subsequent operation (not shown) the layer on the running material web transmits.

In the case of direct orders, the running material web is over the Surface of the roller 1 and the liquid or pasty Medium in the desired layer thickness on the current Material web applied directly.

The direction of travel of the material web or roller surface is 1 and 2 marked with the reference number 2.

1 and 2 in two different modification variants shown first embodiment of the invention Commissioned work has two conversion options common basic assembly, the following in detail is described and its components in the figures are mostly hatched.

The base assembly each includes a support beam 3, which carries individual elements of the commissioned work Distribution pipe 4 comprises, through which the liquid or pasty Medium is fed. The support beam 3 has on his Top side obliquely and approximately tangential to roller 1 extending rear wall 5, which in the region of its lower end in bearing webs 6 for journal 7 passes. On the Bearing pins 7 are front wall webs 8 mounted on one Front wall 9 are attached, which are at a distance and approximately parallel to the top of the rear wall 5 of the support beam 3 runs. The front wall 9 is also referred to as the outer wall, and the rear wall 5 and the adjacent wall areas are also referred to as the inner wall. Between the front wall 9 and the rear wall 5, a feed gap 10 is formed, which over a number of feed channels 11 which the rear wall 5 penetrate, connected to the interior of the distribution pipe 4 is. Liquid or delivered via the distribution pipe 4 pasty medium can therefore via the feed channels 11 in the Feed gap 10 can be fed, as this with arrows is indicated.

The structure of the basic assembly described above is in Principle known. However, the peculiarity exists According to the invention in that the areas of the front wall 9 and the rear wall 5 for the detachable attachment of add-on elements optionally either to form an order facility in the form an order chamber (see FIG. 1) or to form a Application device in the form of a free jet nozzle (see FIG. 2) are set up.

The attachment elements for forming the application chamber (Fig. 1) or the free jet nozzle (Fig. 2) are for a better overview in contrast to the hatched components the basic assembly is only shown in outline. The Fasteners for the add-on elements can be found in be designed in various ways and are therefore in 1 and 2 only with dash-dotted lines indicated.

As is apparent from Fig. 1, the add-on elements for Forming the application chamber 12 an add-on doctor blade carrier 13 with a doctor element 14 in the form of a doctor bar. The Doctor carrier 13 is in the present case with a Adjustment device 15 equipped on a doctor bed 16 acts with which the squeegee element 14 for fine adjustment the roller or web of material moves towards or away from it can be.

The add-on elements also include in the area of the front wall 9 an attachment toolbar 17 which has an overflow surface 18, which merges into an overflow surface 19 of the front wall 9 and to which there is an excess collection and discharge device 20 connects.

The liquid or pasty fed via the distribution pipe 4 Medium therefore flows via the feed channels 11 into the Feed gap 10 and from there into the application chamber 12. The Excess liquid or pasty medium then flows out the storage chamber 12 via the storage bar 17 and the Overflow surfaces 18 and 19 in the excess collection and Removal device 20, via which the excess liquid or pasty medium is removed for the purpose of preparation.

As is apparent from Fig. 2, the detachable add-on elements include to form an order facility in the form of a Free jet nozzle a mounting nozzle bar 21, which on the Front wall 9 is attached and on the roller 1 facing end has a concave guide surface 22. The Add-on elements also include a further nozzle bar 23 which with the nozzle bar 21 forms a metering gap 24 which upstream into the feed gap 10 and over which the liquid or pasty medium is fed.

In the conversion variant of the The attachment nozzle strips 21 and 23 are of this type designed that the metering gap 24 with the supply gap 10 approximately encloses a right angle. Instead of this preferred The attachment elements for the free jet nozzle can be used but also designed in any other way his. In addition, facilities can be provided with which the nozzle bar 21 or the nozzle bar 23 for Change in the metering gap 24 compared to the opposite nozzle bar can be adjusted.

The entire commission is also schematic with a shown delivery and tilting device equipped.

The application mechanism can be approximately radial via the delivery device moved towards the roller 1 or moved away from it. For this purpose, the entire arrangement on a swivel lever S attached with its right end in the drawing a fixed bearing L is articulated so that it around Axis of rotation D in the direction of the double arrow Z and can be pivoted.

The order work can in turn be turned over the tilting device pivoted an axis parallel to the roller axis and thus the Position of the application chamber 12 or the free jet nozzle in relation adjusted to the material web or roller surface become. For this purpose, the entire arrangement on the pivot lever S to the center of the present embodiment Doctor blade lying parallel axis pivotable, like this is indicated in the drawing with a double arrow K.

2 with the as a free jet nozzle working order facility has a greater "height" than the work with order chamber according to FIG. 1, the work on the delivery device must have some of the Roller 1 can be moved away.

While the first shown in FIGS. 1 and 2 Embodiment the applicator with respect to the roller 1 about the seven o'clock position of the roller 3 and 4, a second embodiment in which the Applicator in relation to the roller 1 approximately in the "three o'clock position" the roller is arranged. This commissioned work too comprises a support beam 30, which serves as the basis for the individual Elements of the application work and a distribution pipe 31st comprises, through which the liquid or pasty medium supplied becomes.

The arrangement also has a front wall 32 and a rear wall 33, between which a feed gap 34 is formed becomes. The feed gap in turn is located with the distribution pipe 31 via feed channels 35 in connection. Via the distribution pipe 31 delivered liquid or pasty medium can therefore over the feed channels 35 are fed into the feed gap 34, as indicated by arrows.

As in the first embodiment, there is also in the second Embodiment the peculiarity that the Basic assembly in the area of the front wall 32 and the rear wall 33 for the detachable attachment of add-on elements either either to form an order facility in the form of a Order Chamber (see. Fig. 3) or to form a Application device in the form of a free jet nozzle (see FIG. 4) is set up.

As in the first exemplary embodiment, FIGS 4 the components of the basic assembly of the application hatched throughout the order chamber (Fig. 3) or the free jet nozzle (Fig. 4) forming Add-on elements are only shown in outline. Also in this embodiment, the fasteners designed for the add-on elements in various ways his. The fasteners are therefore in Figs. 3 and 4 only indicated with dash-dotted lines.

3, the add-on elements include Training the application chamber with a mounting doctor 36 Doctor element 37 and adjusting device 38. Also include the add-on elements in the area of the front wall 32 a Attachment toolbar 39, which has an overflow surface 40, the opens into an overflow channel 41 to which one Excess collection and discharge device 42 connects. To the Outflow of excess liquid or pasty medium over Ensuring the drain channel 41 is a jet device 43 provided.

The detachable add-on elements to form an application device in the form of a free jet nozzle in the in Fig. 4 shown a second embodiment Add-on nozzle strip 44, which is attached to the front wall 32 and a nozzle bar 45 attached to the rear wall 33 is. The fasteners for the attachment nozzle strips 44 and 45 are also in Fig. 4 only with dash-dotted lines indicated.

Also the second embodiment shown in FIGS. 3 and 4 has of course a delivery and Tilting device, however, for better clarity is not shown for the sake of it.

In addition, in the second embodiment, the Representation of further, necessary for the function, for the Understanding of the invention but not necessary elements been waived.

According to the two previously described exemplary embodiments 1 and 2 or Fig. 3 and 4 are the add-on elements for optional training of an order chamber order facility or a free jet nozzle application device designed that the two conversion variants each Direction of rotation of the associated roller 1 can be maintained. The attachment elements can, however, also be designed in such a way that that with the conversion from one to the other conversion variant a reversal of the direction of rotation of the associated roller 1, which at direct application as counter roll and with indirect application as Applicator roller acts, goes hand in hand. Such Design of the add-on elements that reverse the Direction of roll rotation is in a third Embodiment realized that below 5 and 6 will be explained.

5 and 6 are in the third embodiment corresponding components of the order work with the provided with the same reference numerals as for the first Embodiment according to FIGS. 1 and 2. It is therefore also to the explanations there on the corresponding ones Components referenced.

In this third embodiment there is again a Basic assembly trained in both Commissioning unit variants, which are detachably mounted Add-on elements are realized, is retained. This Basic assembly comprises a support beam 3, only part of which is indicated in the figures. The support beam 3 carries Distribution tube 4 through which the liquid or pasty medium is fed. Attached to the distribution pipe 4 is a rear or inner wall 5 to which further rear or connect inner wall sections 5A and 26. Farther the support beam 3 carries a front or outer wall 9, which together with the rear or inner wall 5, a feed gap 10 trains. The liquid or passes through feed channels 11 pasty medium from the distribution pipe 4 into the feed gap 10, from where the medium of the connected to the basic assembly Application device is fed. On the front or

Outer wall 9 is an excess collection and discharge device 20 attached for the liquid or pasty medium.

5 carries the previously described one Basic assembly add-on elements to form a Order facility in the form of an order chamber 12. To the Area 5A of the rear wall 5 are doctor blade support elements 13, 13A as well as another element 25 grown. The doctor element 13A receives a doctor element 14 in the form of a roller doctor. The Doctor blade elements 13, 13A together form a kinked one or angled doctor blade carrier. The attachment element 25 carries one known adjusting device 15 with which the Doctor blade element 13A carried doctor blade element 14 in the direction can be adjusted towards the roller 1 or away from it. The Adjustment device 15 is indicated by an arrow.

In the area of the front wall 9, an attachment element 17 is in shape a storage rail attached. The storage bar 17 limits together with the doctor element 13, 13A and the doctor element 14 die Application chamber 12. On the outside of the storage bar 17 is an overflow surface 18 is formed over which excess liquid or pasty medium from the application chamber into the subsequent excess collection and discharge device 20 can drain off.

The roller 1, the indirect roller as an application roller and acts as a counter roller when applied directly, turns at the variant shown in FIG. 5 with application chamber in Direction of arrow 2.

As illustrated in Fig. 6, to realize the Free jet nozzle applicator variant instead of Add-on elements 13, 13A, 14, 17, 25 add-on elements 21 and 23 mounted. The attachment element 21 is in the form of a nozzle bar placed on the area 5A of the rear wall 5, while the Add-on element 23 in the form of a second nozzle strip on the Area of the front wall 9 is placed. The two Nozzle bars 21 and 23 are designed such that they between form a metering gap 24 to which along the Nozzle strip 21 connects a free concave deflection surface 22. The liquid or pasty medium to be applied leaves the Order setup as a free jet and is at the Deflection surface 22 in the corresponding application direction steered with respect to the surface of the roller 1.

The is also only indicated by an arrow Adjustment device 15, via which the nozzle strip 21 for Adjustment of the metering gap 24 to the opposite one Nozzle bar 23 can be moved towards or away from this.

The counter or application roller 1 rotates at Free jet nozzle applicator variant according to FIG. 6 in the direction the arrow 2. To achieve the reversal of the direction of rotation Counter roll or applicator roll 1 after the conversion from one into the other application unit variant is the roller drive a reversal of rotation, not shown.

Through the appropriate design of the add-on elements and the direction of rotation of the roller 1 remain Operating devices, i.e. especially the Adjustment devices 15 on the same side of each Coating machine. This remains the case with both conversion variants Operating personnel together with the associated operating and Adjustment devices on the same operating side of the Coating machine received, which also results in a faster and easier to remodel.

This third exemplary embodiment is also equipped with a and tilting device provided for the sake of better Clarity is not shown. Also from For reasons of better clarity, there are others for which Function necessary for understanding the invention, however 5 and 6 not required elements shown.

7 and 8 is a fourth embodiment of the Commissioned work illustrated. Yourself Corresponding components of the commissioned work are with the provided with the same reference numerals as for the first Embodiment according to FIGS. 1 and 2. With regard to the Components 3, 4, 5, 6, 7, 8, 9, 10 and 11, which are the The basic assembly is therefore based on the explanations for referred to the first embodiment.

Also with regard to the delivery and tilting device D, K, L, S and Z is on the explanations of the first embodiment referred.

In both conversion variants according to FIGS. 7 and 8, a maintain common add-on element 21A which is attached to a Area 5A of the rear or inner wall 5 is attached. In the Free jet nozzle applicator variant, as shown in FIG. 7 is shown, this common attachment element 21A serves as Nozzle bar and forms together with one to the area of Front or outer wall 9 attached second nozzle strip 23 a metering gap acting as a free jet nozzle 24. Das Extension element 21A is designed such that it is a free has concave deflecting surface 22, which adjoins the metering gap 24 connects and the free jet of liquid or pasty Medium in the desired direction with respect to the surface the roller 1 steers.

The elements 25A, 26A and 27A form an adjusting device for the metering gap 24. By means of the machine width distributed adjusting screws 26A, which are located on the strip 25A support which with the base of the common Attachment 21A is firmly connected, the head area the nozzle bar 21A closer to the nozzle bar 23 or from this way can be set. The nozzle bar points to this 21A has a thinner area in its center, the one certain elastic deformability of the inguinal head enables. The head area of the nozzle bar 21A is also versus cover 27A, which is about in Fig. 7 only schematically indicated fasteners firmly with the bar 25A is connected, deformable. Of course, another can Adjustment device as that shown here by way of example be used.

The counter or application roller 1 moves in the direction of Arrow 2. The free jet nozzle application device in Downstream of the direction of rotation is a Fine metering device F, the applied stroke liquid or pasty medium by means of a Finely metered doctor blade.

Fig. 8 shows the order chamber conversion variant of the fourth Embodiment in which the base assembly and the common add-on element 21A as for the free jet nozzle applicator variant 7 are retained. Also the strip 25A and the screws 26A are retained, the Adjustment screws 26A come with the order chamber conversion variant no function too. Instead of the cover element 27A, an add-on element in the form of a baffle bar 17 is now opened the common extension element 21A and the bar 25A placed and via (only shown schematically) fasteners firmly connected to it. The storage ledge is on its outer surface 17 provided with an overflow surface 18 to which a Excess collection and discharge device 20 connects.

Be to the area of the front or outer wall 9 Doctor blade elements 13 and 13A and one in the doctor blade element 13A held doctor element 14 attached. The Doctor blade elements 13, 13A, the doctor element 14 and the Storage bar 17 delimit an order chamber 12. Das Add-on element 21A, which is used for the free jet nozzle variant 7 formed part of the metering gap 24, now extends the together with the doctor element 13 Feed gap 10 to the application chamber 12. Again, this is Embodiment an adjustment device known per se 15 provided to the doctor element 14 towards the roller 1 or from to move this away. In this fourth embodiment the direction of rotation for both conversion variants (see arrow 2) maintain the roller 1.

The fourth exemplary embodiment explained above enables a faster and easier conversion from one to the other another variant, since the attachment element 21A in both variants can be retained and thus the basic assembly can be attributed. When converting from one to the other the other variant is therefore fewer add-on parts to convert.

In the fifth embodiment of the invention Commissioned work, which is shown in Fig. 9, is a Basic structure provided, which consists of a basic assembly and an application device located there in the form of a Free jet nozzle assembly.

The base assembly comprises a support beam 3, which carries individual elements of the commissioned work Distribution pipe 4 comprises, through which the liquid or pasty Medium is fed. The support beam 3 has an approximately radially to the roller 1 extending rear or inner wall 5, the present embodiment in the wall of the distribution pipe 4 passes. In the area of the lower end of the wall 5 are under the distribution tube 4 bearing webs 6, the bearing pin 7th wear. Front wall webs 8 are mounted on the journal 7, which are attached to a front or outer wall 9, which at a distance and approximately parallel to the outer surface of the rear wall 5 and the adjoining wall of the distribution pipe 4, and in this way forms a feed gap 10 which also is aligned approximately radially to the roller 1.

The feed gap 10 is in turn over a number of Feed channels 11, the wall of the distribution pipe 4th penetrate, connected to the interior of the distribution pipe 4. Liquid or pasty delivered via the distribution pipe 4 Medium can therefore enter the feed gap via the feed channels 11 10 are fed in, as indicated by arrows.

The front wall 9 is in the region of the journal 7 opposite end equipped with a lip 12B, the one Dosing gap 13B of the free jet nozzle limited.

On the upper side of the support beam 3 facing the roller 1 is a lip element 14B with a concave deflection surface 15B placed that together with the lip 12B the metering gap 13B the free jet nozzle.

The basic structure described above forms one in principle well-known free jet nozzle work. That about a Distribution pipe 4 fed liquid or pasty medium flows in this free jet nozzle arrangement via the feed channels 11 into the supply gap 10 and the metering gap 13B and then occurs between lips 12B and 14B, redirected over the Deflection surface 15B as a free beam, which is then in direct Order on the material web supported by the counter roller 1 or in the case of indirect application onto the application roller acting roller 1 hits. So that's with the previous one described basic structure a functional Free jet nozzle work, in which then of course the 9 shown further on lip elements 12B and 14B assembled structural elements are removed.

The entire commission is schematic with a shown delivery and tilting device equipped. about the delivery device can open the application unit approximately radially the roller 1 is moved toward or away from it. For this the entire arrangement is attached to a swivel lever S, the one with its right end in the drawing fixed camp L is articulated so that it around Axis of rotation D in the direction of the double arrow Z and can be pivoted. In turn via the tilting device the applicator can move around an axis parallel to the roll axis can be pivoted and thus the angle of the Commissioned work in relation to the material web or Roll surface can be adjusted. This is the whole Arrangement on the pivot lever S in the present Exemplary embodiment lying in the center of the element 20B Roll axis parallel axis pivotable, as in the Drawing with a double arrow K is indicated. On the Element 20B will be discussed in more detail later.

For the conversion variant described above with a Free jet nozzle arrangement in the form of the two lip elements 12B and 14B is the associated roll position by one dash-dotted line indicated. The corresponding Setting of the applicator with respect to the roller 1 is carried out through the above-described delivery and tilting device. At the mode of operation as a free jet nozzle work is in Roll running direction, which is indicated by the arrow 2, a fine metering device F is connected downstream of the application. If necessary, this can also be used in the operating mode Order chamber exist.

As already shown, the changeover to Arrangement described above on an order chamber working order set up the one described above Commissioned work completely, i.e. including basic assembly, dismantled and replaced by a new one working with the order chamber Commissioned work to be replaced. This is according to the invention elaborate dismantling and conversion no longer necessary. Much more According to the invention, only the direct order areas of the liquid or pasty medium rebuilt as described below and in Fig. 9 is shown.

As can be seen from FIG. 9, according to the invention the lips are 12B and 14B for detachably attaching elements to form a Application chamber for the liquid or pasty medium educated. For the modification of the free jet nozzle work it is in a commissioned work that works with an order chamber thus only necessary on the lip 12B Doctor blade elements 18B and 19B with a doctor element 20B put on and on the lip 14B a baffle bar 16B to put on. The detachably mounted baffle bar 16B is included an overflow surface 17B, which leads to a Excess collection and discharge device 23B leads. After cultivation of these add-on elements is that shown in FIG. 9 Order chamber order work before.

Doctor blade support elements 18B and 19B are divided into one Doctor holder 18B and a doctor bed 19B, in which the Doctor element 20B is mounted in the form of a doctor rod. The Doctor bed 19B can with respect to the doctor holder 18B via a Adjustment device 21B the respective requirements be set accordingly. As already described, can in addition, the overall arrangement of the tilting device the axis of the doctor rod (or when using a Doctor element in the form of a blade around the effective edge) be pivoted, as indicated by the double arrow K is indicated. The doctor bed 19B and parts of the doctor holder 18B together with the storage bar 16B form an order chamber 22B, from which the liquid or pasty medium then passes over the Doctor element 20B on the surface of the roller 1 or Surface of the material web is applied. The surplus of the liquid or pasty medium flows out of the Job camera 22B from the storage bar 16B and passes over the overflow surface 17B for the purpose of conditioning in the Excess collection and discharge device 23B.

The attachment elements in the form of the doctor blade carrier 18B, 19B and Stowage bars 16B are easy and quick to handle can easily be attached and detached to the free jet application unit in the order chamber application work shown in FIG. 9 to transform and vice versa.

Since the basic structure works with a free jet nozzle Commissioned work has a lower "height" than the conversion variant with order chamber 22B, the order work on the Delivery device for working with free jet nozzle delivered and moved away for work with the order chamber become. Then, in turn, via the tilting device if necessary, the optimal angular position of the free jet nozzle or the application chamber opposite the roller 1 become.

In the sixth embodiment of the invention Commissioned work is a basic structure, as in Fig. 10 is shown. The basic structure consists of a Basic assembly and an attached Order facility in the form of an order chamber.

With regard to the basic assembly 3, 4, 5, 6, 7, 8, 9, 10 and 11 becomes the fifth on the previous explanations Reference example according to FIG. 9. Likewise, with regard to the delivery and tilting device D, K, L, S and Z referred to the explanations there. Which corresponding components are in the fifth and sixth Embodiment provided with the same reference numerals.

The front or outer wall 9 is in the area of the End shaft 7 remote end designed as a baffle 12C and forms an overflow surface 13C on its outer surface. The Overflow surface 13C goes in the area of the front wall webs 8 in an excess collection and discharge device 14C.

The area 5C of the rear or inner wall 5 is enclosed Doctor blade carrier 18C, which has a doctor blade element 17C in the form of a Blade carries. The doctor element 17C is in the doctor carrier 18C by means of a clamping device 18C and can by means of an adjusting device 19C which runs along a bar 16C is arranged on the material web surface or Roll surface to be moved to or away from this.

Through the doctor blade element 18C with the doctor blade 17C and the ram bar 12C is bounded by an application chamber 20C. On such an order chamber order work as described above is known in principle. The 4 injected liquid or pasty medium flows over the Feed channels 11 in the feed gap 10 and from there into the formed between the baffle bar 12C and the doctor element 17C Order Chamber 20C. The excess of the liquid or pasty Medium flows through the damming bar 12C and passes through the Overflow surface 13C for the purpose of processing in the Excess collection and discharge device 14C.

Using the tilting device, the application can be moved one by one Roller axis swiveled parallel axis and thus the angle of the doctor element 17C with respect to the material web or Roll surface can be adjusted. This is the whole Arrangement on the pivot lever S in about the effective Edge of the doctor element 17 lying parallel axis pivotable, as in the drawing with a double arrow K is indicated.

As already shown, previously had to switch to an application device working with a free jet nozzle in 10 depicted order chamber application work completely, i.e. including those made of supporting beams, distribution pipes, connecting and other facilities dismantled existing basic assembly and with a new one equipped with a free jet nozzle Commissioned work to be replaced. This is according to the invention elaborate dismantling and conversion no longer necessary. Much more only the direct application of the liquid or pasty medium-producing areas, as shown schematically in Fig. 11. The Basic assembly, i.e. the support beam, the distribution pipe and the facilities required for connection can thus remain and according to the invention for both with a free jet nozzle working arrangement as well as for an order chamber working arrangement can be used. For the renovation each only certain add-on elements that are lighter and are easier to handle, can be attached or removed.

As can be seen from Fig. 11, the baffle bar 12C are the Front wall 9 and the squeegee carrier 18C for the detachable mounting of Elements for the formation of a working as a free jet nozzle Applicator trained. For a conversion of the 10 order chamber as a Free jet nozzle working application device is only required, the storage ledge 12C an attachment in the form to place a nozzle bar 21C and on doctor blade carrier 18C instead of a doctor element 17C, a second nozzle bar 24C to attach, which then with the nozzle bar 21C one Dosing gap 25C forms, which acts as a free jet nozzle. in the Embodiment closes the metering gap 25C with the Feed gap 10 about a right angle. At the Nozzle bar 21C is a free concave deflection surface 22C formed, which connects to the metering gap 24C and the free jet of the liquid or pasty medium into the desired direction in relation to the roller or Material web surface deflected. The counter or application roller 1 has the two conversion variants according to FIGS. 10 and 11 same direction of rotation, which is marked by an arrow 2 is.

In the example, the nozzle strip 21C is attached via Fixing screws 23C, the attachment of the add-on elements to form the free jet nozzle gap, however done in many different ways.

The nozzle bar 24C is in the clamping device of the Doctor blade carrier 18C held and can by the along the Strip 16C arranged adjusting device 19C with respect to the opposite nozzle bar 21C for setting the Dosing gap 25C can be adjusted.

The add-on elements in the form of the nozzle strips 21C and 24C are easy and quick to use and easy to put on and take off be dismantled to the basic order plant with order chamber, as shown in Fig. 10, in a free jet nozzle applicator 11 to transform and vice versa.

11 with the as free jet nozzle working order facility has a greater "height" than 10 the work with the application chamber according to FIG. 10, the work on the delivery device must have some of the Roller 1 can be moved away.

Claims (26)

1. Applicator unit for the direct or indirect application of a liquid or pasty medium to a running web, in particular a paper or board web, having a basic subassembly with

   a supporting beam (3; 30) extending over the web width, and

   a distributing device (4, 11; 31, 35) for feeding the liquid or pasty medium into a feed gap (10; 34) which extends over the web width and is bounded by a front wall (9; 32) and a rear wall (5; 33),

   characterized in that
   the area (5, 5A, 9; 32, 33) of the front and rear wall of the basic subassembly is equipped for the detachable fitting of elements (13, 13A, 14, 17; 36, 37, 39; 21, 21A, 23; 44, 45) for forming an application chamber (12) or for forming a metering gap (24) operating as a free-jet nozzle for the liquid or pasty medium.
2. Applicator unit according to Claim 1,
   characterized in that the add-on elements for the application chamber (12) or the free-jet nozzle metering gap (24) are constructed in one or more parts.
3. Applicator unit according to Claim 1 or 2,
   characterized in that at least one joint add-on element (21A) can be used in an identical add-on position both when the application chamber (12) is added on and when the free-jet nozzle metering gap (24) is added on.
4. Applicator unit according to Claim 3,
   characterized in that the joint add-on element (21A) is constructed in one piece with the basic subassembly.
5. Applicator unit according to one of Claims 1 to 4, characterized in that the add-on elements for forming the application chamber (12) comprise a doctor carrier (13, 13A, 36) with a doctor element (14; 37) and a damming strip (17; 39).
6. Applicator unit according to Claim 5,
   characterized in that the add-on elements for forming the application chamber (12) in the area of the damming strip (17; 39) comprise an overflow device (18, 20; 40, 41, 42).
7. Applicator unit according to Claim 6,
   characterized in that the overflow device has an excess collection and discharge device (20; 42), which follows an overflow surface (18; 40, 41).
8. Applicator unit according to one of Claims 1 to 7, characterized in that the add-on elements (21, 21A, 23; 44, 45) for the free-jet nozzle metering gap (24) have an essentially strip-like or lip-like shape.
9. Applicator unit according to one of Claims 1 to 8, characterized in that the add-on elements for forming the free-jet nozzle metering gap are configured such that the free end of the metering gap (24) is followed, on one side of the gap, by a concave, free deflection surface (22) for the liquid or pasty medium.
10. Applicator unit according to one of Claims 1 to 9, characterized in that the add-on elements for forming the free-jet nozzle metering gap are configured such that the metering gap (24) forms approximately a right angle with the feed gap (10) for the liquid or pasty medium.
11. Applicator unit according to one of Claims 1 to 10, characterized in that the applicator unit is provided with an infeed and/or tilting device (D, K, L, S, Z) .
12. Applicator unit for the direct or indirect application of a liquid or pasty medium to a running web, in particular a paper or board web, having a basic subassembly with

    a supporting beam (3) extending over the web width, and

    a distributing device (4, 11) for feeding the liquid or pasty medium into a feed gap (10) which extends over the web width and is bounded by a front wall (9) and a rear wall (5),

    and with lip elements (12B, 14B) which are formed in the area (5, 5B, 9) of the front and rear wall of the basic subassembly and which between themselves form a metering gap (13B) operating as a free-jet nozzle for the liquid or pasty medium,
    characterized in that
    the area of the lip elements (12B, 14B) is equipped for the detachable fitting of elements (16B, 18B, 19B, 20B) for forming an application chamber (22B).
13. Applicator unit according to Claim 12,
    characterized in that at least some of the lip elements (12B, 14B) forming the free-jet nozzle are detachably connected to the area (5, 5B, 9) of the front and rear wall.
14. Applicator unit according to Claim 12 or 13,
    characterized in that the add-on elements for forming the application chamber (22B) are constructed in one or more parts.
15. Applicator unit according to one of Claims 12 to 14, characterized in that the add-on elements for forming the application chamber (22B) comprise a doctor carrier (18B, 19B) with a doctor element (20B) and a damming strip (16B).
16. Applicator unit according to Claim 15,
    characterized in that the add-on elements for forming the application chamber (22B) in the area of the damming strip (16B) comprise an overflow device (17B, 23B).
17. Applicator unit according to Claim 16,
    characterized in that the overflow device has an excess collection and discharge device (23B), which follows an overflow surface (17B).
18. Applicator unit according to one of Claims 15 to 17, characterized in that the doctor carrier (18B, 19B) is constructed with more than one part.
19. Applicator unit according to one of Claims 12 to 18, characterized in that the applicator unit is provided with an infeed and/or tilting device (D, K, L, S, Z) .
20. Applicator unit for the direct or indirect application of a liquid or pasty medium to a running web, in particular a paper or board web, having a basic subassembly with

    a supporting beam (3) extending over the web width, and

    a distributing device (4, 11) for feeding the liquid or pasty medium into a feed gap (10) which extends over the web width and is bounded by a front wall (9) and a rear wall (5),

    and with elements which are located in the area (5, 5C, 9) of the front and rear wall of the basic subassembly, form an application chamber (20C) and comprise a doctor carrier (18C) with a doctor element (17C) and a damming strip (12C),
    characterized in that
    the area of the doctor carrier (18C) and the area of the damming strip (12C) are equipped for the detachable fitting of elements (21C, 24C) for forming a metering gap (25C) operating as a free-jet nozzle.
21. Applicator unit according to Claim 20,
    characterized in that at least some of the elements forming the application chamber (20C) are detachably connected to the area (5, 5C, 9) of the front and rear wall.
22. Applicator unit according to Claim 20 or 21,
    characterized in that the add-on elements (21C, 24C) for forming the free-jet nozzle metering gap (25C) are essentially of strip-like or lip-like shape.
23. Applicator unit according to one of Claims 20 to 22, characterized in that the elements (21C, 24C) for forming the free-jet nozzle metering gap are configured such that the free end of the metering gap (25C) is followed, on one side of the gap, by a concave, free deflection surface (22C) for the liquid or pasty medium.
24. Applicator unit according to one of Claims 20 to 23, characterized in that the add-on elements for forming the free-jet nozzle metering gap (25C) are constructed in one or more parts.
25. Applicator unit according to one of Claims 20 to 24, characterized in that the applicator unit is provided with an infeed and/or tilting device (D, K, L, S, Z) .
26. Applicator unit according to one of Claims 20 to 25, characterized in that the add-on elements (21C, 24C) for forming the free-jet nozzle metering gap (25C) are configured such that the metering gap (25C) forms approximately a right angle with the feed gap (10) for the liquid or pasty medium.

Images