EP0999925A1

EP0999925A1 - Method and device for working substantially sheet-or lath-shaped workpieces, in particular made of derived timber products

Info

Publication number: EP0999925A1
Application number: EP98945103A
Authority: EP
Inventors: Klaus Eisele; Kurt Kalmbach; Johannes Schmid
Original assignee: Homag Maschinenbau AG
Current assignee: Homag Maschinenbau AG
Priority date: 1997-07-28
Filing date: 1998-07-28
Publication date: 2000-05-17
Anticipated expiration: 2018-07-28
Also published as: EP0999925B1; DE19732423C1; AU9255498A; WO1999004944A1; ES2174487T3; DE59803294D1

Abstract

The invention relates to a method and device for working at least one edge area of substantially sheet- or lath-shaped workpieces (2), in particular made of derived timber products or similar. The inventive method comprises the following steps: at least one substantially elongated edge profile (6) is produced on the workpiece (2); at least one heat-treatable material is applied to the edge profile (6); the heat-treatable material is smoothed. Immediately before or during application and/or smoothing of the heat-treatable material, the edge profile (6) is temporarily extended at one end (16, 16.2) at least. Application and/or smoothing of the heat-treatable material beings in front of or on the temporarily extended edge profile and/or ends on or behind the temporarily extended edge profile (6, 16.2).

Description

Method and device for processing essentially flat or strip-shaped workpieces, in particular made of wood materials

TECHNICAL AREA

The invention relates to a method and a device for processing essentially flat or strip-shaped workpieces, in particular made of wood-based materials or the like.

STATE OF THE ART

If flat or plate-shaped, strip-shaped or similar workpieces (in particular those made of wood-based materials or the like) that consist entirely or partially of an open-pore, porous, friable, material with an irregular or rough surface structure or comprising more or less granular material particles (such as, for example Wood or chipboard etc., as well as adequate workpieces, which are additionally covered with veneer sheet materials or otherwise coated), are processed in the edge area by a separation process so that a certain edge profile is created on the workpiece, the edge profile has to be tempered in many applications, since the parting surfaces created there on the workpiece either do not meet certain design requirements or are too poor in surface quality and / or strength. Various methods for tempering such edge profiles have therefore been developed.

A generic method and a generic device for continuous processing of flat or strip-shaped workpieces made of an open-pore wood material and the like are from the German Patent application 195 18 925.6 of the applicant known. In the process, during which a workpiece runs through one or more processing stations in a predetermined direction of movement or movement, the workpiece is machined by milling and / or grinding in the edge region and thus an essentially elongated open-pore edge profile is generated, onto which a hot coating compound is applied applied and by hot filling and if necessary. subsequent grinding, is smoothed. The device for carrying out this method comprises a clamping device which holds the respective workpiece in the passage, as well as processing stations arranged one behind the other for the continuous processing, namely a milling and / or grinding station, an application station for the coating compound and a spatula station. With the aforementioned method and the associated device, complete machining of workpieces made of open-pore wood materials and the like in the edge area can be carried out in one pass.

From DD-PS 29 705 a method for strengthening specially stressed areas in the edge area of porous plates, in particular chipboard, is known. The particle board is clamped in a trough which is sealed around the edge region of the workpiece to be tempered, and a solidifying agent in the form of an adhesive or mixture of adhesives is pressed under pressure into the edge of the workpiece via the sealed trough. The adhesive mixture must then be cured.

Furthermore, DE 16 53 240 C3 discloses a device with which porous chipboard panels can be solidified in the edge area to increase, for example, the resistance to screwing. Here, a solidifying agent is pressed from a press-in chamber into the porous edge of the workpiece under pressure. DE 40 28 166 C2 proposes a method and a device for strengthening chipboard in the edge area, in which a strengthening agent is injected into the edge area by means of individual nozzles.

Furthermore, DE-OS 23 61 434 discloses a method for producing a smooth finish without pores on a rough and grained cut surface of a plate-shaped workpiece made of pressed wood, plywood or the like. A layer of plastic, polyurethane or synthetic resin is applied to the edge with the pores in order to close the pores and to structurally strengthen them. When the sealing material is applied mechanically, the injection of the material into molds with the contour of the workpiece is proposed. After the applied sealing material has dried or hardened, it is ground or smoothed.

DE 24 33 476 B2 proposes a method in which a prefabricated intermediate layer made of a cellulose material, which can be pulled off a roll, is first glued onto a porous cut edge, which intermediate layer can then in turn be glued with a prefabricated decorative layer.

In the previously known generic methods and devices, when applying the coating compound, which usually has to be applied quickly and, depending on the respective workpiece material, is usually to be applied in excess and is to be distributed as evenly as possible, especially at the ends of the edge profile to be treated and at the same time in one Angular edges of the workpiece to undesirable burrs or buildup of the coating compound. Depending on the type and property of the compensation mass used, the ridge formed can or partially or completely solidify the adhesion until the next processing step. In order to avoid surface irregularities and, for example, a possible tearing out of the workpiece by a machining tool moving against the burr or an adhesion, which can easily lead to rejects, particularly in the case of porous or slightly crumbly materials, such as particle boards or the like, it is necessary to use the said burr or the like Removal of adhesion in an extra processing step. However, this usually requires a separate processing station and is time and cost intensive, so that it is desirable to avoid such processing. However, workpiece outliers and the burrs or residues of mass residues described in connection with the application of the coating compound can also occur when smoothing the coating compound, especially if it is leveled, for example in a still uncured state, by filling, brushing or the like. In this case, too, the pressure of the smoothing tool resting on the workpiece can cause an outlier at a fragile corner or at such an end region of the edge profile to be machined that has not yet been reinforced by hardened hardening compound. This disadvantageous effect is particularly pronounced and difficult to handle in the aforementioned wood or particle board, in particular those which have a core layer with coarse-grained chips and outer layers with finer chips, or comparable materials. For automated workpiece processing, however, smooth operation with the lowest possible rejects should be aimed for.

PRESENTATION OF THE INVENTION

The invention is therefore based on the object of a suitable method for processing essentially flat or to provide strip-shaped workpieces, in particular made of wood-based materials or the like, which largely avoid the disadvantages inherent in the prior art in a simple and effective manner. Another object is to provide a suitable machining device for such workpieces.

The first-mentioned object is achieved by a method according to the invention with the features of claim 1.

In this method for processing essentially flat or plate-shaped or strip-shaped workpieces, in particular made of wood-based materials or the like, on at least one edge region, at least one essentially elongated edge profile is produced on the workpiece, at least one coating compound is applied to the edge profile and the coating compound is smoothed . Immediately before or during the application and / or smoothing of the coating compound, the edge profile is temporarily extended at at least one end and the application and / or smoothing of the coating compound begins before or on the temporarily extended edge profile and / or ends on or behind the temporarily extended edge profile .

Within the meaning of the invention, the workpieces mentioned include, among other things, those made of solid wood, plywood or a completely or partially open-pore, porous, friable, fibrous, material having an irregular or rough surface structure or comprising more or less granular material particles, including combinations thereof. So in particular wood or chipboard of any kind, which can also be covered with wood and / or plastic veneers or coated in some other way, ie do not reveal the aforementioned material properties ad hoc. For processing with the inventive method are also > φ 3 Ω φ tQ <0 * J 0 <> M Hh tö ö S> M

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any further steps, e.g. Apply a second coating component to the coating compound, drying, fine grinding, painting and / or hot stamping or gluing the workpiece with a coating material, etc.

The temporary lengthening of the edge profile takes place at the times mentioned so that suitable ones

Extension means which have a contour which essentially corresponds to the edge profile to be coated or smoothed, i.e. correspond to the positive shape of the edge profile, are manually and / or mechanically attached to at least one end of the edge profile in such a way that the edge profile continues without substantial interruption down to the extension means, that is to say is artificially lengthened. As a result, the shape and size of the workpiece also change. As a result of the measures mentioned, the edge profile has, at least temporarily, such a shape and approximately properties that would essentially correspond to an uninterrupted or continuous edge profile, precisely at the critical points where the technical problems described at the outset usually occur. It is explicitly pointed out that the contour of the used

Extension means does not necessarily have to be a true-to-shape reproduction of the edge profile and, as a rule, should not be. Rather, the contour, possibly taking into account the necessary machining allowances, will correspond to a desired ideal or final shape of the edge profile, which itself, depending on the workpiece material used, may have a very irregular or porous surface structure and therefore only for the purpose of approximation to the ideal or final shape is to be treated accordingly with the compensation compound. The extension means can therefore also be designed as a type of end piece, which closes, for example, a groove which opens into a workpiece edge in the longitudinal direction of the groove. This is particularly advantageous if the groove is to be completely filled with the coating compound, ie down to the level of the workpiece surface, since the end piece then prevents the coating compound from escaping and enables a smooth workpiece end to be formed. The extension means is expediently designed in such a way that its upper side is as flush and smooth as possible with the surface of the workpiece. In accordance with the basic idea of the invention, an edge profile is also to be understood as a surface section which is produced by a cutting machining or the like and which is to be treated with a casting compound and which begins, for example, in a flat central region of the workpiece and opens into an open edge region of the workpiece or transforms.

In addition to or instead of a separate extension means, a second workpiece of the same design can also be applied to a first in such a way that the edge profile extension of the first workpiece is formed by the corresponding edge profile of the second workpiece. Suitable workpiece geometries are, of course, a prerequisite for this.

Since the application and / or smoothing of the coating compound begins before or on the temporarily elongated edge profile and / or ends on or after the temporarily elongated edge profile, i.e. in other words: the application or smoothing of the application compound based on the longitudinal extent of the edge profile as with one continuous edge profile without significant interruption beyond the actual edge profile area to be treated, there can be no burrs or buildup of the Form the compensation mass at the critical points that normally represent a beginning or an end of the edge profile to be machined at a corner, edge or edge of the workpiece. In this way, it is possible to achieve a high-quality order (especially in excess) and / or a similar smoothing of the remuneration mass in a single pass, without the need for separate, time-consuming and cost-intensive post-processing. The workpiece outliers caused by partially or completely hardened burrs or adhesions in conventional methods can also be effectively avoided with the method according to the invention, both when applying and when smoothing. In addition, the temporary lengthening of the edge profile alone results in a certain reinforcing effect at the critical points of the edge profile, which is primarily of interest in connection with processing tools, in particular fast-rotating cutting high-performance tools or pressing devices, which, as explained above, have a certain force exert on the edge profile and can fray or tear it out. For the aforementioned reasons, the method according to the invention can be used particularly advantageously in workpieces which consist of one or more open-pore, porous or slightly crumbly materials, such as, for example, wood or chipboard and the like, and permits high processing speeds. The method according to the invention can be carried out both manually and by machine. Particularly in the case of automated workpiece machining, the solution according to the invention allows a smoother operation with a considerable reduction in rejects in a simple and effective manner. Due to the achievable high product quality and the possibility of shortened processing cycles without post-processing, a not inconsiderable increase in product yield can be achieved with reduced production costs, so that the invention Process also offers considerable advantages from an economic point of view.

Further advantageous embodiments of the method according to the invention are the subject of subclaims 2 to 11.

The object on which the invention is based is further achieved by a device according to the invention having the features of claim 12.

This device for processing essentially flat or strip-shaped workpieces, in particular made of wood materials or the like, with at least one essentially elongated edge profile, onto which at least one coating compound is applied and then smoothed, comprises at least one edge profile extension device assigned to the workpiece and having a profile extension section, whose profile shape corresponds substantially to that of the edge profile of the workpiece. For the edge profile extension device or its profile extension section and its properties, what has been said above in the explanation of the method according to the invention in connection with the adequate extension means applies, so that further explanations are not necessary.

The device according to the invention also offers the advantages already explained in detail in connection with the method according to the invention. In addition, it should be added that conventional generic machining devices are structurally relatively simple and inexpensive to convert to a device according to the invention.

Further advantageous design features of the device according to the invention are the subject of subclaims 2 to 11. Embodiments of the invention with additional design details and further advantages are described and explained in more detail below with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

It shows :

1 shows a schematic plan view of a partial area of a device according to the invention, in which various basic machining steps of the method according to the invention are carried out on a workpiece according to a first exemplary embodiment,

FIG. 2 shows a schematic perspective view of the device according to FIG. 1;

3 shows a schematic diagram of the basic processing steps according to FIGS. 1 and 2 as well as some further optional steps of the method according to the invention;

4 shows a schematic perspective view of a special component of the device according to the invention to be combined with the workpiece to be machined, with which particularly important steps of the method according to the invention are carried out on the workpiece;

Fig. 5 is a schematic side view of the special

Part of the device in the direction of arrow A in FIG. 4; Fig. 6 is a schematic plan view of the special

Part of the device in the direction of arrow B in FIG. 4;

7 and 8 are schematic side views of further

Design details of a special partial area of the device according to the invention assigned to a front edge profile section of the workpiece; further process steps according to the invention are evident from these figures.

9 and 10 are schematic side views of further design details of a special partial area of the device according to the invention assigned to a rear edge profile section of the workpiece; further process steps according to the invention are evident from these figures.

11 shows a schematic perspective view analogous to the representation in FIG. 4, from which essential steps of the method according to the invention according to a second exemplary embodiment are evident; and

Fig. 12 is a schematic overall view of the device according to the invention in side view.

DESCRIPTION OF AN EMBODIMENT OF THE INVENTION

In the following description and in the figures, identical parts and components are also identified with the same reference symbols in order to avoid repetitions, provided that no further differentiation is necessary.

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Spatula blades 10, 12 further. While the edge profile 6 runs along the spatula blades 10, 12, the applied mass 14 is directed by the blades 10, 12 towards the open pores 4 of the edge profile 6 and pressed into the pores 4, so that these are closed. In this way, the coating compound 14 penetrates evenly into the pores 4 and the unevenness of the edge profile 6. At the same time, the effect of the spatula blades 10, 12 also smoothes the edge profile 6 and the coating compound layer 14 adhering to its outer surfaces, as can be seen schematically at the left edge profile end in FIG. 2.

In FIG. 3, the basic processing steps according to FIGS. 1 and 2 as well as some further optional steps of the method according to the invention, as can be carried out in one pass with a constant workpiece clamping, are shown again in a schematic diagram. The direction of passage of the device is again identified by an arrow. First, the workpiece to be machined is clamped in the device

(Fig. 3A). Then the workpiece 2 is machined by profile milling and a predetermined edge profile is generated (FIG. 3B). This is followed by profile grinding of the edge profile (FIG. 3C). This is followed by the application of the coating compound and then the (hot) filling of the coating compound into the remaining pores and unevenness in the edge profile

(Fig. 3D) as previously explained in detail. In addition to this, for example, another grinding process can follow (Fig. 3E). Furthermore, in a further processing step, lacquer can be applied to the edge profile which has been tempered in this way (FIG. 3F), dried by ultraviolet radiation or the like (FIG. 3G) and then sanded (FIG. 3H). In addition, it is possible to hot-stamp a decorative paper film onto the J $ 3. α O 0 <H Di tO <er Φ IQ φ er 03 J t Di ≤ 0 ti er Φ Pi 03 3 α ω D. «

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TJ PJ 0 '0 03 tQ 0 Ω Hi 0 Φ φ. Ω 0 μ- 03 ^ 52. HS μ- HS μ- D. 0

Φ D. 03 HS rr 0- Z. rr 0 = 0 0 ^J rr 0 tr 03 03 er μ- H Φ μ- Ω Φ Ω Φ φ O

PJ 03 Φ Φ O Φ rr PJ = φ O Φ rr rr rr 52 Φ <: φ cn Hi w rt 0T 0 0 "0 0

TJ 03 Φ 0 0 0 ^J HS μ- 0 0 '0 er 0 Pi μ- 0 = φ 03 Φ - 7t φ rr rr Di rr

Hh Pi TJ φ 7t 3 0 Φ 03 φ TJ φ IQ Ω Di HS μ- HS er 03 μ- φ 0 Φ

Φ H Hl 03 tQ Hi r 0 H HS 0 7? Φ 7t rr £ Φ μ- rr 0 0 Φ φ μ- * • Pi O rr 03 0 Hi O 0 Φ HS 03 N Φ μ- 3 0 = Pi Pi IQ μ- μ- ¹ φ Hh O 3 0 0 Hh tQ 03 rr rr 0 3 Ω φ Φ 0 0 φ PJ 03 μ- PJ IQ 7t μ- 0 = * - D. 7t HS 03 φ PJ

0 μ- ¹ Hh 03 er h- ¹ & H Ω Φ 3 HS Ω

M 03 PJ 0 03 Φ cn 7t rt to μ- tr co cn Φ 0 Hi HS Φ rr cn 03

Edge profile 6 takes place in a common step, the profile counterparts 16 are only removed here after smoothing.

As can also be seen from FIG. 4, the profile counterpart 16 has one to the

Profile extension section 16.2 at a right angle β extending edge section 16.4, which has a shape that is exactly complementary to the shape of the edge profile 6 of the workpiece 2 and to the profile shape of the profile extension section 16.2, that is to say the negative shape of the profile extension section 16.2 or the edge profile 6 corresponds. In the present case, this edge section 16.4 serves both as a covering and reinforcing device for temporarily covering and reinforcing that which has already been processed in a previous step, i.e. here edge profile 6p of the workpiece 2 treated by profile milling and profile grinding, which extends at a right angle to the edge profile 6 currently to be treated with the coating compound 14 and adjoins this corner, and at the same time as a stop for attachment to the workpiece 2 and positioning the profile counterpart 16. The covering and reinforcing device and the stop are thus integrated in the profile counterpart 16 here. The flush, gapless and essentially full-surface contact of the workpiece 2 on the edge section 16.4 of the profile counterpart 16 and the covering and reinforcing effect produced by the special shape of the edge section 16.4 can again be seen particularly well in FIGS. 5 and 6.

It can be seen from the preceding explanations that if the profile counterpart 16 temporarily attached to the workpiece 2 only for the period of application and smoothing of the coating compound 14 is removed again, also that through the edge section 16.4 of the profile counterpart 16 exercised temporary cover, reinforcement and stop function is canceled.

After removal of the temporarily attached profile counterpart 16, the workpiece 2 has a precise, sharply delimited and true-to-shape corner at each end of the tempered edge profile 6 without any noticeable burrs or even outliers. The edge profile 6p, which is still not tempered, is also free of build-up due to mass residues. The workpiece is thus immediately ready for the next machining step.

Although the basic principle of the method according to the invention and the core features of the device according to the invention have only been explained above in connection with continuous processing on a single edge profile 6 to be tempered, it goes without saying that the aforementioned steps can also be carried out manually or in a stationary device, for example. In addition, for machining a further edge profile of the workpiece and / or for coating an edge profile that has already been machined with at least one additional coating compound, at least one of the previously described work steps can be repeated at least once depending on the application.

7 and 8 each show, in a schematic side view, further design details of a partial area of the edge profile extension device of the continuous device according to the invention assigned to a front section of the edge profile 6 of the workpiece 2 in two different positions. 9 and 10 show, in an analogous manner, further design details of a partial area of the edge profile extension device assigned to a rear section of the edge profile 6 of the workpiece 2 in two different positions. Furthermore, FIGS. 7 to 10 go further steps of the method according to the invention emerge. The direction of passage of the workpiece is again indicated by the arrow D in the said drawings. The edge profile 6 to be tempered lies in the viewing plane.

As can be seen from FIGS. 7 to 10, in this variant the edge profile extension device for a single edge profile 6 of the workpiece 2 comprises a pair of profile counterparts 16, namely one for the front end (FIGS. 7 and 8) and one for the rear end of the edge profile (Fig. 9 or 10). The profile counterparts 16 themselves essentially correspond to the construction already explained in connection with FIGS. 4 to 6, but also have an adapter device 22, by means of which they are each releasably connected to a section 24.2 of a movement mechanism M, which acts as a holding device and is described in more detail below are.

Since the temporary lengthening of the edge profile 6 in the continuous processing device is intended to take place during the continuous continuous movement of the workpiece 2, the entire edge profile extension device is arranged to be movable along the workpiece direction D and can be moved with the workpiece 2 along a partial section of the path, here in the area of that Processing stations which are provided for the hardening of the edge profile, that is to say for the application and smoothing of the hardening compound 14 (cf. FIG. 3D). These stations, which are not shown in FIGS. 7 to 10 for the sake of clarity, are briefly referred to as compensation stations for the following description. Since this device also has to process a large number of workpieces in succession at a certain distance sequentially in the tempering station 0

0

D.

Φ μ-

0 φ

3

PJ

0 Q

Φ

0

00

Ω T s: φ

0

7t

ET φ er

Φ to

^

N

0

03

PJ

3

3 φ

0 Q

Φ

03

Φ rr

No.

Φ

HS

Lever mechanism arranged. The long swivel lever 24, at the upper free end 24.2 of which the profile counterpart 16 is detachably held, is moved from an approximately horizontal (FIGS. 8 and 9) to a vertical position (FIGS. 7 and 10) via a swivel cylinder 34 ) pivotable. The front (Fig. 7 and 8) and rear movement mechanism M (Fig. 9 and 10) differ in their structure only in that with the front movement mechanism M, the pivot lever 24 is pivotable in the direction D in the horizontal and in the rear against Direction of passage D. For better distinction in the following description, the components of the front movement mechanism, which are in themselves identical, are given the index “v” for their reference numerals and those of the rear one are given the index “h”.

In the starting position PS, the front and rear movement mechanisms M are in the positions shown in FIGS. 7 and 9, with the pivot lever 24v in a vertical position and the pivot lever 24h in a horizontal position. The runners 28 are each in their right starting position. As sketched in FIG. 9 by dashed lines, the workpiece 2 approaching the tempering station passes over the folded-down rear pivot lever 24h and gently abuts the stop 16.4 of the front profile counterpart 16v (FIG. 7), the feed cylinder 30v shortly before the workpiece hits 2 is activated, starts moving in the direction of travel D and intercepts the workpiece 2 with the help of the profile counterpart 16v. In this way, the front profile counterpart 16v is positioned at the front end of the edge profile 6. As soon as the workpiece 2 has passed over the rear pivoting lever 16h, the rear feed cylinder 30h also starts to move in the direction of travel D, the rear pivoting lever 24h is pivoted upward into the vertical by means of the pivoting cylinder 34h and positions the rear profile extension piece 16h 10 at the rear end of the edge profile 6.

The pivot levers 24v, 24h of the front and rear movement mechanisms M form, in the configuration described above, a claw-like or pincer-like fixing mechanism which, when closed, has the workpiece 2 with its profile extension pieces 16v, 16h located on the upper sections 24.2 of the pivot levers 24v, 24h encloses two sides and thus the profile counterparts 16v, 16h releasably but securely and precisely fixed to the respective end of the edge profile 6 to be tempered and artificially extended. The full function of this fixing mechanism is accordingly such that the front pivot lever 24v closes counter to the direction of travel D and releases the fixation in the direction of travel D while the rear pivot lever 24h closes in the direction of travel D and releases the fixation in the direction of travel D.

When producing the temporary edge profile extension, care must be taken to ensure that at least the extension of the front end of the edge profile 6 is completed even before the coating compound 14 is applied and / or smoothed to the edge profile 6 in the compensation station. In the present case, the rear edge profile extension could in principle be carried out with a slight delay, since this workpiece area only reaches the tempering station later. While the workpiece 2 is passing through the tempering station and the temporarily elongated edge profile, as already described in connection with FIGS. 1 to 6, is tempered with the compensation mass 14, the two profile counterparts 16v, 16h are located in the one shown in FIGS. 7 and 10 Configuration, using the lever mechanisms 24, 32 and the associated runners 28, the same direction and simultaneously by means of the extending > dd • xi d

^ CQ Φ Φ CQ d Cn o φ d d

CQ Φ TJ CN TJ rö JH -H 0 CQ -H -H o d Φ φ d w cn H JH d P Φ d rö Φ P CQ 40 Ό X! JH TJ JH Φ

The entire edge profile extension device is now moved back into the original starting position PS by pulling in the feed cylinder 30, as a result of which the movement cycle is completed. The

As already mentioned above, the edge profile extension device is now available for a new workpiece or a workpiece that has already been machined in a previous work step. When returning to the starting position PS, the profile counterparts 16 can be cleaned if necessary or exchanged for other profile counterparts. In this context, reference is also made to the following explanations relating to FIG. 12.

The positioning of the front 16v and rear profile counterpart 16h as well as the coordinated movements of the feed cylinder 30 and the swivel cylinder 34 take place essentially simultaneously in the exemplary embodiment shown in FIGS. 7 to 10 and are performed by suitable sensor devices and associated control and / or regulating devices are not shown in the figures for the sake of clarity.

FIG. 11 shows a schematic perspective view analogous to the representation in FIG. 4, from which the essential steps of a second exemplary embodiment of the method according to the invention emerge. In the present application, a strip-shaped workpiece 2 is machined, which consists of a chipboard 38 coated on one side with a plastic veneer 36. A semicircular groove 40 is milled into the top of the workpiece 2 through the plastic veneer 36, which opens or merges into an edge region of the same at the end faces of the workpiece 2. The groove 40 exposes the originally covered pressboard material 38, which has a fairly porous, irregular surface and should therefore be appropriately refined in the region of the groove 40 by applying and smoothing a coating compound. To xi CQ .. d> H u Φ rH JH Φ Φ 0 rö φ X -H 0 Φ Φ JH 40 TJ - J4 Φ CQ

> * rl cn Φ d -H 40 υ 44 Φ TJ -H JH Φ 4H 40 Φ Cn 40

JH φ r TJ O X! t-- • Φ TJ rH N cn TJ JH Φ tn Φ φ

00 -H Φ CQ 40 d XI JH OV Cu d JH rH CQ 0 d

PH φ X! Φ Φ J4 Φ Φ XI e. xi i -H 40 Cn X! xl -H o

H o d 40 JH = 0 u TJ rö υ rö d w 0 -H rö 44 -H d

PH d φ rö 3 T Xl rH ~

Φ tn Φ 3 U rl 40 CQ

Φ TJ -H -H TJ JH 04 40 JH Φ Xl X

40 d d T d O rö xl 0 TJ φ d d Φ Φ -H 44 TJ u P JH cn -H rö CQ -n φ CQ rH -H o JH rH

-H CQ Φ -H -H o CQ JH 4H 0 n rö -H TJ SD 4H CQ d 0 JH> d φ rö 44 TJ H O rö N Φ JH o xi

> 3 d JH .. d Φ> u

0 d -H Φ PJ d φ In Φ XI -H

JH rö ΛJ 0 φ 40 Φ 40 P rH

Φ MD -. U Φ Xi -H TJ 40 0 40

T H Cn 40 = 0 40 φ Φ -H Φ cn 3 d N 40 0 CQ CΛ cn JH d d = ro

-H Φ 0 40 CQ £ JH d Xl O 0 CΛ

X 40 Φ 0 Φ d 0 U -H 40

(U XI CQ Φ n> -H d CQ 40 Xl •

= 0 u Φ Cn φ TJ CQ rö υ TJ φ 40 -rH in Φ TJ CN in JH Cn 40 -H 0

-H CQ d cn d o d CQ JH -H

3 0 d rö rH JH 0 d 0 03 4H CQ

Φ -H -H Φ Cn 40; 40 tn 0

Xi m Φ CQ 4H d d X! -H d rö 40 υ Φ CQ o o -H 0 υ Φ Φ 0 r-H Φ

-H Cn cn ι-H JH Φ 40 -H rH XI 40 Xl d ι-H rH dd PJ X! JH rH JH -rH u TJ d ^• rH 0 Φ 40 υ JH Φ rö Φ JH

XI 44 rl X Φ -H 0 O -H Φ XI 0 o

: CÖ 0 φ υ -H 3 X! > PJ pq JH P φ rl cn = 0 P d -H rö 1 Cn i PJ d rH CQ -H 0 t i d Φ X d

JH = rö • rH H Φ d Φ pq u rö

-H -H rH d 0 -H 04 -H 04 = 0

Φ JH Φ Φ Φ d = rö = rö 0 40 JH

3 Φ 40 TJ Eϊ φ 3 PJ 3 Φ CQ Φ

, * N> d d Φ TJ φ φ TJ X TJ rj rH rö = 3 -r—) d Cn Φ Cn d d

Φ Φ -H X 3 Φ CQ -H CQ Φ Φ ro

3 d 44 X Φ X! tn T tn XI s d

N -H O υ o 40 and d υ -H

-f Φ J4 = 0 - # -H Φ 0 0 Φ φ Φ

-t 3 PJ 40 Φ JH i T Φ TJ JH -H JH

OS φ SD d CQ d CQ PJ 0 TJ 0 PJ TJ Φ

5 tQ Φ X Φ JH CQ -H -H CQ 4θ

0 \ Φ CQ 40 40 Φ 40 44 CQ 4H 40 4H d

OS -H -H 0 Φ 0 XI d J4 0 JH d 0 -H

O TJ XI £ Es O Φ Φ rö Φ φ rö Xl

o cn H Φ TJ in 40 d Φ -H d Φ d d d cn Φ

«. o TJ TJ -H rH φ rö Φ d T

-H 0 -H JH CQ X Φ X 44 Φ φ tn Φ 0 rH

, but can also have a certain surface structure if necessary, for example when the coating compound is applied, for example, by means of a toothed spatula or the like and thereby receives a corresponding grooved structure. Furthermore, the edge profile extension device can be designed not only as a block-like, short profile counterpart 16 (as shown, for example, in FIGS. 4 to 6), but also as an elongated body which extends from one edge of the workpiece to another and for the simultaneous machining of two Edge profiles is suitable. It is also pointed out that the temporary edge profile elongation does not necessarily have to be carried out in every machining run of a workpiece. For complete edge processing of a rectangular starting workpiece in four successive passes, it is possible, for example, for the first two passes to be carried out without an edge profile extension in the longitudinal arrangement of the workpiece and the third and fourth passes in each case in the transverse arrangement of the workpiece with edge profile extension. The smoothing of the coating compound is also in a separate step and also by other smoothing methods, e.g. can be realized by grinding the hardened coating compound. Of course, the invention can also be used here

Edge profile extension device are used. It is also conceivable that

Edge profile extension device can also be used for painting or other comparable processing steps.

Reference symbols in the claims, the description and the drawings serve only for a better understanding of the invention and are not intended to limit the scope of protection. Reference list

Designate it:

2 Flat, plate-shaped workpiece

4 Open pores / porous surface structure of 6

6 workpiece edge / edge profile of 2

6.2 Vertical subsection of 6

6.4 S-shaped curved section of 6

6p edge profile of 6, in a previous one

Working step processed 8 application roller 10 spatula blade 12 spatula blade 14 coating compound 16 edge profile extension device (s) /

Profile counterpart (s) 16.2 profile extension section of 16 16.4 edge section of 16 / cover and

Reinforcement device / stop 18 approach direction

20 joint between 16 and 6 or 16.4 and 6p 22 adapter device from 16 24 long swivel lever 24.2 holding device for 16 26 linear guide

28 runners

30 feed cylinders

32 Short swivel lever

34 swivel cylinders

36 plastic veneer

38 pressboard

40 semicircular groove

42 semicircular indentation

44 non-stick coating of 16 46 cleaning device

48 Profile counterpart changing device

..h index for rear parts / components

.. _v Index for front parts / components

α angle between 10 and 6 ß angle between 16.2 and 16.4

A line of sight

B viewing direction

D direction of flow

IA compensation area

M movement mechanism

PS start position

PE end position

51 Profile milling station

52 Profile grinding station

53 Application and hot filler station

54 Profile grinding station

55 painting station

56 drying station

57 grinding station

58 hot stamping station

Claims

claims

1. A method for processing essentially flat or strip-shaped workpieces (2), in particular made of wood-based materials or the like, on at least one edge region, comprising the following steps: , b) applying (8) at least one remuneration compound

(14) on the edge profile (6), and c) smoothing (10, 12) the coating compound (14);

in which

d) the edge profile (6) immediately before or during the application (8) and / or the smoothing (10, 12) of the coating compound (14) is temporarily extended (6, 16, 16.2) at at least one end and the application (8 ) and / or smoothing (10, 12) of the coating compound (14) begins before or on the temporarily elongated edge profile (16, 16.2) and / or ends on or behind the temporarily elongated edge profile (16, 16.2).

2. The method according to claim 1, characterized in that e) the edge profile (6) during the application (8) and / or the smoothing (10, 12) of the compensation mass

(14) is temporarily extended (16v, 16h) at both a front and a rear end.

3. The method according to claim 1 or 2, characterized in that f) at least one unprocessed edge area or an edge profile (6p) of the workpiece (2) machined in a previous work step, which or the edge profile (6) to be coated with the coating compound (14) adjoins, during the temporary lengthening (16 , 16.2, 16v, 16h) of the edge profile (6) and / or during application (8) and / or smoothing

(10, 12) of the remuneration (14) is temporarily covered (16.4) and / or strengthened (16.4).

4. The method according to one or more of the preceding claims, characterized in that g) the temporary edge profile extension (16, 16.2, 16v, 16h) after the application (8) and / or the smoothing (10, 12) of the coating compound (14) is removed again.

5. The method according to claim 3, characterized in that h) the temporary cover (16.4) and / or reinforcement (16.4) of the unprocessed edge area or the edge profile (6p) of the workpiece (2) already processed in a previous step after application ( 8) and / or the smoothing (10, 12) of the compensation compound (14) is removed again.

6. The method according to one or more of the preceding claims, characterized in that i) the temporarily elongated edge profile (16, 16.2, 16v, 16h) of the applied coating compound (14) cleaned (46) or this is removed again.

7. The method according to one or more of the preceding claims, characterized in that k) for processing a further edge profile (6) of the workpiece and / or for coating an edge profile (6p) that has already been machined with at least one additional coating compound, at least one of the steps a) to i) is repeated at least once.

8. The method according to one or more of the preceding claims, characterized in that the machining of the workpiece (2) is carried out as a continuous machining, wherein the workpiece (2) is moved in a predetermined direction (D) and one or more machining stations (Sl - S8) runs through.

9. The method according to claim 8, characterized in that the temporary lengthening (16, 16.2, 16v, 16h) of the edge profile (6) takes place during the movement of the workpiece.

10. The method according to claim 8 or 9, characterized in that the removal of the temporary cover (16.4) and / or reinforcement (16.4) of the unprocessed edge area or the edge profile (6p) of the workpiece (2) already processed in a previous step after Application (8) and / or smoothing (10, 12) of the coating compound (14) takes place while the workpiece (2) is moving.

11. The method according to claim 10, characterized in that the removal of the temporary edge profile extension (16, 16.2, 16v, 16h) takes place during the movement of the workpiece (2).

12.Device for processing essentially flat or strip-shaped workpieces (2), in particular made of wood-based materials or the like, with at least one essentially elongated edge profile (6), onto which at least one coating compound (14) is applied (8) and then smoothed (10 , 12), comprising at least one edge profile extension device (16, 16v, 16h) associated with the workpiece (2), which has a profile extension section (16.2) whose profile shape substantially matches that of the edge profile (6) of the workpiece (2).

13. The apparatus according to claim 12, characterized in that it is designed as a continuous processing device.

14. Device according to one of claims 12 or 13, characterized in that at least one pair of edge profile extension devices (16v, 16h) is provided, of which one (16v) has a front end and the other (16h) a rear end of the elongated edge profile (6) of the workpiece (2) is assigned.

15. The device according to one of claims 12 to 14, characterized in that at least one covering and / or reinforcing device (16.4) for temporarily covering and / or reinforcing at least one raw edge area or one already in one the preceding work step machined edge profile (6p) of the workpiece (2) which is adjacent to the machined edge profile (6) to be coated with the coating compound (14).

16. The apparatus according to claim 15, characterized in that the covering and / or reinforcing device (16.4) is integrated in the edge profile extension device (16).

17. The apparatus according to claim 15 or 16, characterized in that the covering and / or reinforcing device (16.4) has a profile shape which to the edge profile shape (6) of the workpiece (2) and / or to the profile shape of

Profile extension section (16.2) is complementary.

18. The device according to one or more of claims 12 to 17, characterized in that the

Edge profile extension device (16) comprises at least one contact section (16.4) which can be contacted with the workpiece (2) and which has a shape complementary to the shape of the edge profile (6) and / or to the shape of the profile extension section (16.2) and is at an angle

(ß) extends to the profile extension section (16.2).

19. The apparatus according to claim 18, characterized in that the contact section of the

Edge profile extension device (16) is formed separately.

20. The apparatus according to claim 18 or 19, characterized in that the contact section (16.4) Has profile shape that is complementary to the edge profile shape (6) of the workpiece (2) and / or to the profile shape of the profile extension section (16.2).

21. The device according to one or more of claims 12 to 20, characterized in that the

Edge profile extension device (16, 16v, 16h) has at least one adapter device (22) for establishing a detachable connection with a holding device (24.2) assigned to the edge profile extension device (16, 16v, 16h).

22. The device according to one or more of claims 12 to 22, characterized in that the

Edge profile extension device (16, 16v, 16h) is movably arranged.

23. The device according to claim 22, characterized in that the edge profile extension device (16, 16v, 16h) at least along the workpiece passage direction (D) movably arranged and movable with the workpiece (2) at least over a portion (PS - PE) of the passage (M, 28, 30).

24. The device according to claim 22 or 23, characterized in that a movement mechanism (M, 28, 30) is provided for moving the edge profile extension device (16, 16v, 16h) back and forth over the partial section (PS - PE) of the passage.

25. The device according to one or more of claims 12 to 24, characterized in that at least one fixing mechanism (24, 34) is provided for releasably fixing the edge profile Extension device (16, 16v, 16h) on the workpiece (2).

26. The apparatus according to claim 25, characterized in that the fixing mechanism (24, 32, 34) is claw-like or pliers-like and in the closed state encloses the workpiece (2) on at least two sides.

27. The apparatus of claim 25 or 26, characterized in that the fixing mechanism (24, 32, 34) has at least one front fixing element (24v) which closes against the direction of travel (D) and releases the fixation in the direction of travel (D).

28. The device according to one or more of claims 25 to 27, - characterized in that the

Fixing mechanism (24, 32, 34) has at least one rear fixing element (24h) which closes in the direction of passage (D) and releases the fixation against the direction of passage (D).

29. The device according to one or more of claims 25 to 28, characterized in that the

Fixing mechanism (24, 32, 34) arranged on the movement mechanism (M, 28, 30) and can be moved with it.

30. The device according to one or more of claims 12 to 29, characterized in that the edge profile extension device (16v, 16h) is arranged to be driven over by the moving workpiece (2).

31. The device according to one or more of claims 12 to 30, characterized in that this at least one changing device (48) for changing the Has edge profile extension device (16, 16v, 16h) against another.

32. Device according to one or more of claims 12 to 31, characterized in that the

Edge profile extension device (16, 16.2) and / or the covering and / or reinforcing device (16.4) has a non-stick coating (44).

33. Device according to one or more of claims 12 to 32, characterized in that it comprises at least one cleaning device (46) associated with the edge profile extension device (16, 16v, 16h).