EP1066936A1 - Compression moulding process and installation for processing scrap wood into three-dimensional articles - Google Patents

Abstract

The method involves drying the wood, comminuting it to particles less than 0.5 mm and mixing it with up to 15% binder. The mixture is filled in a mould and pressed with an upper mould and a heat source, to produce an intermediate or end product, which may be combined with further moulded parts to form a complete unit. The wood to form the matchwood is chipped and mixed intensively with binder. The mixture is used to fill in a lower mould covered with an upper mould and compressed in a press, to give the desired contours. At the same time, the mould assembly is heated. After hardening, the moulded part is removed. The contours in the lower and upper moulds fit one another before and during the moulding and heating. An Independent claim is included for a unit for implementing the method.

Description

The invention relates to a method for processing wood or wood waste to profiled, shapely molded parts comparable to real wood products the wood is dried, crushed to less than 0.5 mm and then with binder up to 15% mixed and filled into a lower mold and by pressing on the upper mold and Heat supply is compressed and shaped, then as an intermediate and / or The end product is removed from the mold and, if necessary, completed with further molded parts become. The invention also relates to a plant for the production of real wood products corresponding molded parts made of wood and with a profiled surface, with a dryer, a shredder, a mixer, the associated Silos and feeders for binders and a lower mold and upper mold receiving or having press for shaping with heating for the entered Mix.

So-called chipboards are made from wood chips and similarly processed wood produced by pressing, these chipboards then for the most varied Find uses. Aside from the fact that these particle boards are due of the large proportion of binder used is relatively large Own weight is a disadvantage that their further processing because of the Coming press process is difficult. There is a relative one smooth outer surface because of the binder used, but is the interior unstructured and dependent on many coincidences, so that the ones described above Disadvantages arise. The high proportion of binders is also used for so-called MDF boards disadvantageous, with the surface of appropriately manufactured panels subsequently post-treated, d. H. in particular must be smoothed in order to foil or To be able to apply varnish. Another disadvantage is that, if at all, only MDF boards can be produced with slightly outlined contours. Real wood doors similar contours are produced, this is only with a correspondingly high milling effort, if possible at all. It should be mentioned in passing that the corresponding Milling and processing effort is also necessary for real wood doors, if this or other panels can be provided with certain predetermined or desired structures should. A process for the production of honeycomb plates describes the DE-PS 24 12 538.0-44. A method for producing pressed bodies is known from the DE-OS 40 18 433.1 known, wherein wood chips, sawdust and plywood manufacturing waste mixed with a high proportion of plastic material (10 - 20%) and then is pressed. Screw presses and similar presses are used, whereby mostly multiple presses are used. With multiple presses, such as multi-day or single-day multiple presses must be replaced when replacing only one mold entire press can be shut down. For multiple presses with mold circulation As a rule, the upper form is firmly connected to the press stamp. The subform works in umlaut mode. After entering the press, it must fit exactly to the upper mold be adjusted and locked. Often there are several sub-forms, at least two or three in circulation to keep the press waiting time short. Nevertheless, that is Press cycle determined by the overall circumstances, in particular by the curing time, so that only unsatisfactory throughputs can be achieved. The disadvantage is that in addition, that with the known presses and the known methods only simple Molded parts, d. H. So those with a flat surface can be achieved. Should such molded parts get a particularly structured surface, so it is only possible that appropriate ornaments or essays are stuck on what requires a special work cycle and what precludes such molded parts get the desired noble character.

The invention is therefore based on the object of a method and a system to create high-quality molded parts with corresponding from old wood or waste wood Structural specifications are economically producible.

The task is solved procedurally by defining the wood Wood chips are cut and then mixed intensively with the binder, that the mixture of wood shavings and binder is filled into the sub-molds and after placing the top molds in a press, taking into account the desired ones Contours evenly compressed and specifically heated and retouched in shape the hardening is removed from the mold, the contours in the upper and lower mold be adapted to one another before and / or during the molding and heating period.

With such a method it is possible to use wood and also wood waste To produce high-quality molded parts, for example those with profiled or structured surface from which doors or door elements are to be made Corresponding profile strips or the wells are the same Shaping the molded part with produced in a pressing process, surprisingly the wood chips of defined dimensions mixed with Bibmittel are at have the pressing process according to the invention incorporated into the total mass, that it is not necessary to edit the surface afterwards. The mix is shaped and heated in the mold at the same time, so that even with the flat Molded parts an even heating in the "shortest way" is possible. Because of uniform heating and targeted compaction also in the area of the contours can do so in short cycle times and with a surprisingly good result Molded parts made for use as door decks or for other purposes that meet the highest demands. There is no need to rework the surface not only in terms of smooth training, but also because the desired ones Contours are given in the pressing process so that the following one Machining, especially milling work, is then no longer necessary. Finally, it is advantageous that when changing the molded part or when changing the contours of the molded part eliminates the need for extensive work on the Press simply because both the upper and lower mold are light can be exchanged to be used accordingly in the same press to become.

After an expedient embodiment of the invention, it is provided that Wood is dried to 4-6, preferably 5%. This drying process is running the shredding process. Compared to the prior art is reduced Energy expenditure worked. In addition, there is less fines, because wood chips are produced with moist wood.

This targeted machining of the starting material is achieved in particular if the wood is cut in a shredder, where wood chips with under 0.5 mm dimensions can be produced specifically.

A molded part that is clean and true to shape with regard to the contours is in accordance with Manufacture invention by the sub-molds an approximately uniform compression resulting, preferably shaped accordingly at the edges and slopes, preferably beveled or rounded, while the top shapes are precisely shaped, preferably be angular. This special training of the sub-forms and the upper forms surprisingly bring a smooth or clean execution the desired contours for the molded part. The mix is poured into the lower mold and can then be smoothed if necessary, so that on the edges and slopes could set a different compression, depending on their training and Arrangement to each other. But this is due to the bevelling or rounding of the edges and bevels of the lower mold balanced, the upper mold version unchanged remains, so that a very precise formation of the desired contours occurs. In the area of the lower molds, the material or mixed material can yield so far that the pressure balances itself over the entire area.

The output can be increased in a targeted manner without it being additional Significant investment is required by the mixture of wood chips and binders is compressed in parallel in two or more presses. This has already been pointed out earlier been that the heating of the mix in the form, d. H. in sub and The upper shape takes place so that the uniformity is maintained. To make the presses as possible quickly available for another pressing operation the invention before that upper and lower molds in a first press under compression of the mixture are locked, then heated in the closed form and cured, whereupon upper and lower molds are unlocked in a second press and then be emptied. The actual molding process or better said the curing process can then take place at rest and in the intended time expire without the press remaining occupied. Rather, it stands for another or even several other pressing processes are available.

A further acceleration of the cycle time can be achieved by the lower and Upper molds run all round on a transport device and depending on. Need brought in or discharged and put on hold and / or on several Floor circulation transport facilities can be distributed. The process thus offers more Possibilities of variation both from the simultaneous production of corresponding Molded parts as well as their targeted shaping. So on different floors Different molding material can be produced or it can be put on hold molds on an unused floor are placed around then to be reintroduced if necessary. The exchange of the individual forms takes place on the level using switches and on the vertical using appropriate slopes or via elevators.

Deviating from the prior art, the invention provides that, if possible no fine material included in the mixing process and further processing becomes. Rather, it is envisaged that the wood is cut and with a sieve Mesh size 0.1 to 0.6 mm sieved and that the mixture of wood chips ≤ 0.5 mm and binder is preferably bunkered before the molding process. This material, which is approximately 0.5 mm, can be in the form of fine Wood chips particularly well together with the binder in the specially trained Form processed and shaped. Surprisingly, as mentioned earlier, that with such wood shavings have a sufficiently high strength Molded part with a completely smooth surface can be produced.

To achieve the smooth surface but in particular the compensation of the Compression is provided that the lower mold by shaping and / or baffles is designed so that taking into account the surface shape and the intended Profiles of the finished molded part achieved approximately the same material compression everywhere becomes. The entire shaping is carried out in accordance with this process step set in advance and chosen so that it covers the entire, quite large area of the molded part can achieve approximately the same compression.

The uniformity of the material compression is achieved by the fact that with and / or after filling the lower mold by sprinkling the mixture approximately flat surface of the filled mixture is produced with the help of sliders. Since the projections and recesses are also set accordingly, can with the Place the upper mold on the lower mold with the necessary same compression pressure be guaranteed over the area.

The fact that according to the invention for the sufficient curing of the Mixture required conditions on temperature supply and residence time of the mixture can be set in the lower and upper form, the maximum pressure according to Application of the proof is slightly reduced, may differ from the state of the Technology in every single form can be specifically addressed on the molded part, whereby by reducing the pressure at the beginning, targeted ventilation of the mix is brought about. This is necessary in order to crack open individual areas to avoid the molding.

A further optimization of the method is achieved in that the molded parts after removal from the opened mold without a surface treatment or post-treatment of the contours with foil or varnish and then with other molded parts to complete wooden parts. Avoiding the Post-treatment steps significantly reduce the manufacturing effort and shorten the Cycle times.

A further variation of the manufacturing process is possible in that the wood component in the mixture in whole or in part by other, preferably chip-shaped or fibrous recycling products or non-recycled wood or targeted prepared wood from sawdust etc. or bevel-tight material with certain (short) Fiber length is supplemented or replaced. In particular the addition of fiber material to the body, for example a door, for its strength depending on the later Decisive advantages.

A system with a dryer is used to carry out the method Shredding device, a mixer, the associated silos and feed means for binders as well as with lower molds and upper molds assigned to a press are. In terms of the system, the object is achieved in that the comminution device as a defined wood chips producing aggregate, preferably fine chopper trained and that a sieve separating comminution downstream is that the mixer can be fed via a binder silo that has at least one Press provided and equipped with a conveyor belt and that the molds have their own, adjustable heating and that the shapes on the inside are the ones you want Projections that define ornaments and influence uniform compression and have recesses. With such a system, the invention Procedures are carried out economically and, above all, with the result of moldings, especially doors or door elements, very similar to natural doors are or correspond. About the shredder, d. H. the shredder the wood, in particular the old wood, is shredded so far and specifically cut, that it is then after sieving and separating the fine material mixes well with the binder. The machined material with the desired one Grain size of ≤ 0.5 mm is then filled into the lower mold and via the transport device fed to a press where the two molded parts under simultaneous Heating can be compressed to form the filled mix. These shapes are designed so that they can be seen over the entire surface results in an approximately uniform compression. To do this, they have the appropriate trained projections and recesses. The molded articles thus produced leave the system in principle without further treatment. However, it is in the Usually useful to apply foils or to paint the surface or but to complete the entire molded parts with others, for example to doors.

After appropriate training, it is provided that the sub and the The upper mold is assigned to a tool carrier, which has a transport device and a lock-in and lock-out switch is designed accordingly. Because of this training it is possible to feed the molds one after the other to the press and then continue the correspondingly influenced shape on the conveyor belt and empty and then fill it again with mixed material. Will the appropriate lower and upper forms are not required, they are removed or if they are needed, they can simply be introduced and always in the Circle.

The most uniform compaction over the entire area and d. H. also In the area of the profiles or ornaments, it is provided that the lower form an almost even compaction on the edges and slopes of the profiles is rounded off, bevelled or supplemented by chicanes. The Underform therefore takes on due to the rounding and bevels when applying the Print part of the material in the area of the profiles, so that the pressure is evened out around the profiles, being according to further training it is provided that the upper shape has unprocessed edges and bevels of the profiles, in order to specify the visible parts of the respective profiles as cleanly as possible.

A compensation, i. H. pressure equalization in the area of the profiles is particularly important possible because the lower mold is equipped with sliding pieces that match the profiles opposite and designed to ensure optimal compression are. Instead of or in addition to the edges and slopes, spaces are specified here, into which coating material can then be pressed, if this is to make it uniform compression in the entire area is necessary. It can by Sliding pieces the receiving volume can be adapted to the circumstances, especially when, as provided for in a further development, the sliding pieces can be moved against the force of a spring or via a hydraulic unit are trained. The sliding pieces are based on the spring force according to the optimal Compression positioned, as well as with the help of the hydraulic unit. In order to can surprisingly precise the shape of the surface of a Such molded part can be optimized, in particular it is possible to decorate on the Specify surface that are also more complicated in terms of shape.

The precise formation of the molded parts is above all the targeted heating achieved what the shape and / or the tool holder with a heater are provided. The heating is then set and switched on when the corresponding Form material or mixed material is poured into the mold and the top mold is placed on top is. Of course, it is also conceivable to preheat the molded product beforehand and with one certain temperature in the molds.

According to a variant of the method according to the invention, that which is based on wood Initial product through fibrous or chip-shaped recycling products entirely or partially replaced, to which the invention additionally provides that the or Mixers are also connected to a bunker for third party recycling materials. In order to If necessary, this material can be mixed in or supplied as an alternative, depending on which products or molded parts are to be produced.

The individual shapes are placed on the tool carrier on the rotating Moving the conveyor belt, it is advantageous that a locking and a Unlocking press are provided, which are designed as a multi-daylight press and that a circular transport device is assigned to each floor. The shapes will be designed so that when the pressure is applied via the press in the locking press are connected to each other so that they are then removed heating the mix from the locking press on the conveyor belt transported until the curing process is complete. Then the heater turned off and unlocked the respective shape in the unlocking press so that the molded part is then removed and transported or processed can be. The molds can be locked at the same time using the multi-daylight press and unlocked so that high cycle times can be achieved.

In order for an exchange between the individual areas of the multi-daylight press To enable the circulation transport devices in the different Layers with each other, preferably vertically in the area of the entry and exit points are connected. This makes an exchange easy between the individual Levels possible without requiring a variety of each individual level Assign shapes.

The invention offers the advantage that different molded parts at the same time or be produced in cycles. Because doors, for example, usually consist of several Layers or parts must be put together, this requires a separate intermediate work step be inserted, for example by applying adhesive. Around to avoid this or at least to reduce the use of adhesives the invention that the forms for door decks and for door frames and intermediate layers or insulating elements corresponding coupling areas, preferably groove and The spring are predetermined. Since tongue and groove alternately one part, for example the door deck and the door frame are assigned, they can easily are put together, perhaps only in the marginal area the application of Glue is required.

An execution of this form serves to compensate for the compression of the lower form and also the upper form in addition to the prepared edges and bevels have corresponding shapes for ornaments and / or profiles. Here are larger spaces are provided in the material, d. H. Mix material to be pressed into it can, if this is appropriate because of the ornaments or profiles or where one precise shape without excessive pressure is required. This also ensures at the same time that the surface both in the area of the flat parts of such Door decks or molded parts as well as in the area of ornaments, profiles and. Ä. is equal to, so that, as with natural wood products, there is also a one-piece appearance.

A version according to also serves to even out the compression the feeder for the molds is equipped with spreading machines which are equipped with the same and / or two intermediate bunkers are connected. About these spreaders an automatic loading of the molds can take place, taking this into account the profiles and projections to be specified later.

The feed is further optimized according to the invention in that the Feeding and / or the spreading machines a form generator which can be inserted into the mold or slide is assigned. As a result, the surface of the imported mix can be targeted and shaped.

Earlier it was said that an equalization compression is achieved by appropriate cavity specification. This has to be optimized by the formations to even out the molded part density of the chip product are provided with adapted escape cavities or with baffles. For Further optimization is finally provided that two or more presses run in parallel used to work with each other, so that not only with a circular Training of the system, but also multiple presses at the same time with simple training can be used in parallel.

The invention is characterized in particular by the fact that a method and a system is created with which even high-quality molded parts can be produced economically are. Because of the special procedure and the special training the system results in high throughput rates with short cycle times, in particular of the pressing process. The presses themselves are only used to initiate and Implementation of the compression used while subsequently in the form of the Press pressure is maintained until the curing process is complete. However, this no longer requires the mold to remain in the press. The Press can be used for other forms. Another advantage is that special requests can also be catered for and that small production lots can be easily inserted, because only the exchange of the two-part Form is required. The process and system are also identified by their versatility and variability, so that the decor and shapes changed and can be quickly and inexpensively adapted to changing market conditions can. Finally, recycling materials can also be incorporated so that Manufactured frames and doors of various shapes, colors and other looks can be. It is also advantageous that intermediate layers are introduced can be, for example, fire-resistant or soundproof. Such doors offer high added value with the same manufacturing effort. In the furniture industry can the DIY sector for wood products in the interior such as door panels, Window sills and moldings are optimally supplied. By the possibility of one three-dimensional surface design can also create new styles find that were previously assigned to the upper price level. Because waste wood or residual wood is used that is not contaminated, but not for other purposes or a corresponding credit can be expected, so that the profitability can be further increased.

Fig. 1

ein Schema einer Altholzveredelungsanlage,

Fig. 2

eine einem Werkzeugträger zuzuordnende Form im Detail,

Fig. 3

einen Ausschnitt eines Formteils, hier einer Tür,

Fig. 4

eine 3-D-Folie in Draufsicht,

Fig. 5

einen Türkörper mit mittlerem Dämmelement im Schnitt und

Fig. 6

ein Schnitt durch eine Form mit profilierter Ober- und Unterform.

Further details and advantages of the subject matter of the invention emerge from the following description of the associated drawing, in which a preferred exemplary embodiment is shown with the necessary details and individual parts. Show it:

Fig. 1

a diagram of a waste wood processing plant,

Fig. 2

a shape to be assigned to a tool carrier in detail,

Fig. 3

a section of a molded part, here a door,

Fig. 4

a 3-D film in top view,

Fig. 5

a door body with a middle insulation element in section and

Fig. 6

a section through a shape with a profiled upper and lower shape.

An old wood refining plant 1 consists of several together by conveyor devices connected parts. The waste wood is first in a waste wood bunker 2 bunkered in order to then be fed to the dryer 3. In the drying the water content of 50% for wood chips, for example, to 3% moisture dried down. Wherever possible, secondary heat is used to to increase the economy.

After leaving the drying process, the waste wood material is shredded 4 crushed and then on a sieve 6 or a cyclone 7 classified as necessary, the fine grain a fine product bunker 10, the coarse material the coarse product bunker 9 and the fine product, which in a cyclone 7 has been separated, gets into a very fine dust silo 8.

The now dried and classified material is separated into Screw conveyors brought to the silos or bunkers 8, 9, 10 and onwards from these to the mixer 11 or mixer 16, in which the from the binder silo 13 or 15th introduced binder is mixed intensively with the wood material.

Either the mixed good is now temporarily stored or it is stored the spreading machines 12 and 14 filled into the molds 25.

The mixers 11, 16 receive the required binder from the binder silos 13, 15 by the way via dosing screws, which are not shown in FIG. 1 and via Belt scales, in order to achieve the finest mixture possible, that for the production especially of high-quality doors or door moldings is absolutely necessary. The spreading device or spreading machine 12, 14 has a screw discharge at the end or a slider to make the material even more targeted and even to fill in the form 25.

In Fig. 1 is further indicated that both with regard to the addition of binder as well as the addition of waste wood or other recycling material variations possible are. For this purpose, a third binder silo 15 'is provided, such as also a third party recycling bunker 33. During the recycling bunker 33 directly into the Dryer 3 transfers or the material from 33 to 3 via a pressure chain conveyor or similar is transported, the binder silo 15 'can dose the binder either both the mixer 11 and the mixer 16 or specifically one of the two mixers 11, 16 feed more or less. So can the amount of binder and also the composition of the binder changed according to needs and be adjusted.

The press 20 is also included in the waste wood finishing plant 1 Press 20 is divided into two and consists of the locking press 22 and the unlocking press 23, the two parts being connected to one another via a transport device 21 are. About this transport device 21, the molds 25 from the spreading machines 12, 14 to the locking press 22 and then to the unlocking press 23 method.

The shape 25 as shown in FIG. 2 illustrates the upper shape 26 and the lower shape 27, for example, via a joint or a hinge or the like. together are connected so that the upper mold 26 is opened to fill in the starting material can be. If the starting material is then filled into the lower mold 27, the entire mold is in the open position via the transport device 21 in Tool carrier 28 brought to the locking press 22 and there by hanging up the upper mold 26 compressed so that it receives the desired shape. The necessary Cohesion then takes place via the heater 29, which is either already during of filling is set or when the locking press 22 is reached.

If one of the molds is not needed for the next pressing process, then do so it is discharged via the discharge switch 31 and placed in a waiting position. Conversely, new shapes 25 can also be introduced via the in-feed switch 30 to be filled and used in the ongoing process.

After leaving the locking press 22, the individual molds 25 jam on the intermediate belt up to the unlocking press 23. The reason is that now the molding process expires essentially through the heating 29, which everyone Form 25 is assigned. Once the material has been shaped and hardened accordingly, the forms 25, 25 ', 25' '25' '' one after the other into the unlocking press 23, where the lid or the upper mold 26 is lifted off again, so that it is now over the removal machine 44 the finished molded part, for example the door deck 35, is removed can be. 35 is specially marked to make it clear that here door decks 35 have been made, which have ornaments, bridges and recesses and so doors made of real wood and correspondingly processed or even carved are very similar. The removal machine 44 has a corresponding joint 45 that the door decks 35 provided with the ornaments 46 deliberately and carefully can be removed and brought to the storage bin.

As already mentioned, FIG. 2 shows a mold 25 consisting of the upper mold 26 and the lower mold 27, both of which are provided with a heater 29, 29 '. The too generating ornaments 46 are indicated. The tool carrier 28, which is also about can have heating or the corresponding supply lines, is with the transport device 21 not shown here, via which the tool carrier 28 and the form 25 can be moved from one press to another.

Fig. 3 shows the detail of a finished molded part or door deck 35, wherein it becomes clear that this is an old German door deck 36, which is a blank is already so stable that it can be stored for a long time. Optimal it is, however, if it is as fast as possible with the one shown in FIG. 4, for example Slide 37 is connected, of course, the same depressions and ridges or has the same old German look as the associated door deck 35, only that another variant is shown in FIG. 4.

Finally, FIG. 5 shows a multi-layer door in which the rear element 42 is smooth-walled, but is already provided with a groove 40 which with the spring 41 of the Insulating element 39 is designed accordingly. This allows both parts can be easily connected. Even those that are pressed directly onto each other Insulating element 39 and front element 38 have such a groove 40 and tongue 41 -connection in order to enable a positive connection of the two components. Finally, the film 37 is applied, which is due to the application technique the outer forms of the old German door deck 36 or the other Ornaments 46 adapts.

In Fig. 1 it is indicated that there is also the possibility with two presses 20, 22 ', 22' 'to work. The circulating transport device 24 then ensures that the individual forms 25 in a smaller circulation or even parallel to each other be performed.

With 35 the door decks are designated, which are either stored or as a molded part be temporarily stored in order to then be further processed if necessary. The dashed Lines of coarse product bunker 9 and mixer 11 are shown in dash-dot lines, to make it clear that this part of the system is not absolutely necessary, but rather serves security. The same applies to the intermediate bunker 48, which can be duplicated and the spreading machines 12 and 14, which are here a feed 50 for filling the molds 25 on the tool carriers 28 are transported. With 49 a slider or shaper is designated, the Mix material coming from the intermediate bunker 48 on the lower mold 27 evenly or distributed as evenly as possible. As already mentioned, FIG. 2 shows an upper and lower mold 26, 27 existing form 25, here the projections 64 of the upper form 26 and the recesses 65 are assigned to the lower mold 27. With 29, 29 'is the heating designated.

Fig. 5 shows the special profiles 52, the molding 35 and the here Front element 38 are assigned, wherein it can be seen that the edges are all rounded are. This creates soft formations 53, 54, with an escape cavity 55 is also indicated in this area, via which the compression in this Area can be made more uniform if this proves necessary.

6 shows a lower mold 27 and upper mold 26 Form 25, which are provided with recess 65 and projection 64. In the area of this Formations 64, 65, a slide 58, 61 is arranged opposite each other, over which the area above can be changed in volume, so the best possible compression of the wood binder mixture 57 or the material to be mixed 57 to achieve. In the embodiment shown on the left, the sliding piece becomes 58 loaded by a spring 59 and pressed in the direction of the projection 64, the Spring 59 is mounted on a plunger 60. With the training shown on the right the sliding piece 61 with the hydraulic tappet 62 is no further here shown hydraulic unit 63 so loaded that in the area between the sliding piece 61 and the recess 65 optimal compression of the wood binder mixture 57 is reached.

All of the above-mentioned features, including those that can only be taken from the drawings alone and in combination are regarded as essential to the invention.

Claims (29)

Process for processing wood or wood waste into profiled, shapely molded parts comparable to real wood products, in which the wood is dried, shredded to less than 0.5 mm and then mixed with binder up to 15% and filled into a lower mold and by pressing on the upper mold and Heat supply is compressed and shaped in order to then be removed from the mold as an intermediate and / or end product and, if necessary, to be completed with further molded parts,
characterized,
that the wood is cut into defined wood chips and then mixed intensively with the binder, that the mixture of wood chips and binder is poured into the lower molds and, after placing the upper molds in a press, is evenly compressed taking into account the desired contours and at the same time specifically heated in the mold and is removed from the mold after curing, the contours in the upper and lower molds being matched to one another before and / or during the molding and heating period. Method according to claim 1,
characterized,
that the wood is dried to 4-6, preferably 5%. Method according to claim 1,
characterized,
that the wood is cut in a fine shredder. Method according to one of the preceding claims,
characterized,
that the lower molds result in an approximately uniform compression, preferably shaped accordingly at the edges and bevels, preferably bevelled or rounded, while the upper molds are precisely shaped, preferably angular. Method according to one of the preceding claims,
characterized,
that the mixture of wood chips and binder is compressed in parallel in two or more presses. Method according to one of the preceding claims,
characterized,
that upper and lower molds are locked in a first press while compressing the mixture, that the closed mold is then heated and cured, whereupon upper and lower molds are unlocked in a second press and then emptied. A method according to claim 5 or claim 6,
characterized,
that the lower and upper molds are guided all around on a transport device and, depending on the requirements, are introduced or discharged and put on hold and / or distributed over several Eagen circuit transport devices. Method according to one of the preceding claims,
characterized,
that the wood is cut and sieved with a sieve with a mesh size of 0.1 to 0.6 mm and that the mixture of wood chips ≤ 0.5 mm and binder is preferably bunkered before the molding process. Method according to one of the preceding claims,
characterized,
that the lower mold is designed by shaping and / or baffles such that, taking into account the surface shape and the intended profiles of the finished molded part, approximately the same material compression is achieved everywhere. Method according to one of the preceding claims,
characterized,
that with and / or after filling the lower mold, by scattering the mixture, an approximately flat surface of the filled mixture is produced with the aid of sliders. Method according to one of the preceding claims,
characterized,
that the conditions required for sufficient hardening of the mixture are set via the temperature supply and residence time of the mixture in the upper and lower molds, the maximum pressure being slightly reduced after the pressure has been applied. Method according to one of the preceding claims,
characterized,
that after removal from the opened mold, the molded parts are foiled or varnished with a film without any surface treatment or post-treatment of the contours and then completed with further molded parts to produce finished wood parts. Method according to one of the preceding claims,
characterized,
that the wood component in the mixture is wholly or partly supplemented or replaced by other, preferably chip-shaped or fibrous recycling products or also non-recycled wood or specifically processed wood from sawdust etc. or fibrous material with a certain (short) fiber length. Plant for the production of real wood products corresponding molded parts made of wood and with a profiled surface. with a dryer (3), a comminution device (4), a mixer (11), the associated silos (13, 15) and feed means for binders and a press (22) which receives or has bottom molds (27) and top molds (26) for shaping with heating for the entered mix,
characterized,
that the shredding device (4) is designed as an aggregate producing chips, preferably a fine shredder, and that a sieve (6) separating the shredded material is arranged after it, that the mixer (16) can be fed via a binder silo (13, 15), the at least one press (22) is provided and equipped with a conveyor belt (21) and that the molds (25) have their own, adjustable heating (29) and that the molds (25) on the inside provide the desired ornaments (46) which influence the uniform compression of the projections (64) and recesses (65). System according to claim 14,
characterized,
that the lower and upper molds (26, 27) are assigned to a tool carrier (29), which is designed to correspond to a transport device (21) and an infeed and outfeed switch (30, 31). System according to one of the preceding claims,
characterized,
that the lower mold (27) is rounded off at the edges and bevels of the profiles (52), resulting in an approximately uniform compression, beveled or supplemented by baffles. System according to one of the preceding claims,
characterized,
that the upper form (26) has unprocessed edges and bevels of the profiles (52). System according to one of the preceding claims,
characterized,
that the lower mold (27) is equipped with sliding pieces (58, 61), which are opposite the profiles (52) and are designed to ensure optimal compression and are displaceable. System according to one of the preceding claims,
characterized,
that the sliding pieces (58, 61) are designed to be displaceable against the force of a spring (59) or via a hydraulic unit (63). System according to one of the preceding claims,
characterized,
that the mold (25) and / or the tool carrier (28) are provided with a heater (29). System according to one of the preceding claims,
characterized,
that the mixer or mixers (11, 16) are additionally connected to a bunker (33) for third-party recycling materials. System according to one of the preceding claims,
characterized,
that a locking and an unlocking press (22, 23) are provided which are designed as multi-daylight presses and that each floor is assigned a circulation transport device (24). System according to one of the preceding claims,
characterized,
that the circulating transport devices (24) are connected vertically to one another in the different levels, preferably in the area of the entry and exit points (30, 31). System according to one of the preceding claims,
characterized,
that the shapes (25) for door decks (35) and for door frames as well as intermediate layers or insulation elements (39) have corresponding coupling areas, preferably groove (40) and tongue (41). System according to one of the preceding claims,
characterized,
that the lower mold (27) and also the upper mold (26) have corresponding shapes (53) for ornaments (46) and / or profiles (52) in addition to the prepared edges and bevels. System according to one of the preceding claims,
characterized,
that the feed (50) for the molds (25) is equipped with spreading machines (12, 14) which are connected to the same and / or two intermediate bunkers (48). System according to one of the preceding claims,
characterized,
that the feeder (50) and / or the spreading machines (12, 14) is assigned a form generator or slide (49) which can be inserted into the mold (25). System according to one of the preceding claims,
characterized,
that the formations (53) are provided with adapted escape cavities (55) or with baffles to even out the molded part density of the chip product. System according to one of the preceding claims,
characterized,
that two or more presses (22, 22 ', 22'') are provided working in parallel to each other.

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