DE102017103456B4 - Removal unit of a removal device for removing pressed material, device for realizing a predetermined basis weight of a material to be spread on a conveyor material mat, system for the production of press plates and method for realizing a predetermined basis weight - Google Patents

Abstract

The removal device (28) is part of a device (24) for realizing a predetermined basis weight of a press material mat (22) sprinkled on a conveyor track (16) In the production of press plates, in particular wood and / or other renewable agricultural products, such as chip, fiber, straw and Schnitzelplatten, and plastic plates, is a device (24), a plant (10) for the production of press plates and a method for realizing a given basis weight described. The removal unit (40) can be driven in rotation about an imaginary axis of rotation (44) and has at least one removal section (48) with which a surface of the pressed material mat (22) can be processed. At least one removal section (48) is arranged on an axis of rotation (44) axial end side of the removal unit (40).

Description

The invention relates to a removal unit of a removal device for removal of pressed material, wherein the removal device is part of a device for realizing a predetermined basis weight of a spread on a conveyor track pressed material in the course of a production of press plates, in particular material plates made of wood and / or other renewable agricultural products, such as chipboard , Fiber, straw and Schnitzelplatten, as well as plastic plates is, according to the preamble of claim 1.

Furthermore, the invention relates to a device for realizing a predetermined basis weight according to the preamble of claim 5.

Furthermore, the invention relates to a system for the production of press plates, in particular material plates made of wood and / or other renewable agricultural products, such as chip, fiber, straw and Schnitzelplatten, and plastic plates, according to the preamble of claim 15th

In addition, the invention relates to a method for realizing a predetermined basis weight of a spread on a conveying side of a conveyor track pressed material mat in the course of a production of press plates, in particular material plates made of wood and / or other renewable agricultural products, such as chip, fiber, straw and Schnitzelplatten, as well Plastic plates, according to the preamble of claim 16.

With WO 2005 046 950 A1 For example, a particle or chipboard and a method for its production has become known. This particle plate consists of at least three layers, the outer layers are made of fine material, whereas the middle layer consists of coarser material. In order to save a maximum amount of material, it is intended to produce the plate basically with low material content, only a higher proportion of material to be scattered at the points of the plate, which is later required for the incorporation of fittings or fasteners to compounds to make with other parts. For this purpose, it is proposed to continuously scatter a higher proportion of material on the forming belt or on the already existing lower cover layer in the longitudinal direction or in the production direction of the pressed product mat in order to obtain in the production direction spaced tracks with higher material input of Pressgutmatte after manufacturing have a uniform in length and width plate, a higher density. In addition, by at least one transversely movable to the production direction nozzle at certain points, preferably in the transverse direction stain similar additional material are applied. This serves to obtain from a split strand of strand particleboard having a higher density for mounting fittings or fasteners but using less material and density in the area.

In a further development of the above prior art describes the EP 2 653 279 A1 the possibility of influencing a nonwoven during production within the spreader so that different material is removed during spreading across the width to also produce again a nonwoven with different densities across the width.

An alternative to the aforementioned production is with DE 10 2008 030 417 A1 known. Here, an optimal scattering with a uniform basis weight with conventional and known scattering devices is proposed in order subsequently to remove parts of the mat again by suitable means, for example milling rollers ("Scalper").

From the EP 2 535 158 B1 For example, a scalpel roll arrangement is known for leveling quantities of wood bulk material resting on a conveyor track for producing a wood panel. The scalper roller arrangement comprises at least one scalpel roller which is arranged above this transversely to the orientation of the conveyor track. The Scalperwalze is formed over its longitudinal extent at least on its surface of several Scalperwalzen sections. The distance between the surface of each roller roller section and the conveyor track is variable independently of other roller roller sections. Each scalper roll section is provided with bulk material removal elements on its bulk contacting portions. The ablation elements are designed as freely projecting bristles or lamellae. Each scalper roller section has an oblique arrangement with respect to the orientation of the conveyor track. With the arrangement, a leveling or desired distribution of the bulk material lying on the conveyor track should also be feasible in terms of its weight per unit area.

The invention is based on the assumption that at least two different types of press material mats are used in the production of material plates. A conventional one which has a given uniform surface density in the direction of production and across the width to produce uniform and uniform density material plates. The uniformity of the basis weight serves primarily to save material and to carry out the manufacturing process in a resource-saving and cost-saving manner. Another type would be a Pressgutmatte with a given but differentiated basis weight in the direction of production and / or across the width as explained above for discussion of the prior art.

The invention has for its object to design a removal unit, a device, a system and a method of the type mentioned, with which a simple and accurate a predetermined basis weight along the pressed material mat can be realized.

This object is achieved according to the invention in the removal unit in that at least one removal section is arranged on an axial end face of the removal unit which is axial relative to the axis of rotation.

The removal unit has at least one removal section. The at least one removal section is the part of the removal unit with which the excess pressed material can be removed from the pressed material mat.

According to the invention, at least one removal section is located on the front side of the removal unit and extends transversely to the axis of rotation. By rotation about the axis of rotation can be removed with the at least one Abtragabschnitt on the front side of the removal unit according to pressed material with a circular motion about the axis of rotation. Such Abtrageinheiten can be realized easily and inexpensively. In addition, pressed material can be precisely removed from the pressed material mat. In contrast to the solution according to the invention, in the case of the scalpel rollers known from the prior art, the removal sections are located circumferentially with respect to their axes of rotation on the peripheral sides. In the solution according to the invention, a corresponding holder for the removal unit can be made simpler. In addition, a mounting of the removal unit to the holder and a disassembly can be simplified and a corresponding installation effort can be reduced.

The axis of rotation of the at least one removal unit can be arranged perpendicular or oblique to a delivery side of the conveyor track. A corresponding drive means for the at least one removal unit can be arranged in a space-saving manner on the side of the removal unit facing away from the conveyor track. On a deflection of about a drive shaft can also be dispensed with.

Furthermore, according to the invention, the at least one removal section can perform circular movements on the pressed material mat. In this case, parts of the at least one removal section move counter to the direction of production, with the position direction and transversely to the production direction. So the pressed material can be removed better.

In an advantageous embodiment, at least one removal section may have at least one removal structure, in particular a structured surface, at least one bristle, at least one projection, at least one point, at least one tooth, at least one blade, at least one blade and / or at least one hook or the like , With a removal structure, the pressed material can be better removed, in particular separated, brushed, demolished, cut off or the like.

Advantageously, the removal unit can be designed as a so-called end mill. End milling cutters can be realized easily and inexpensively.

In a further advantageous embodiment, at least one removal section may have at least one recess which is axial with respect to the axis of rotation. In the axial recess, the removed material to be compacted can be carried radially outward from the processing area, in particular as a result of the rotation of the removal unit.

Advantageously, the recess can be realized as a recess. In this way, it can be easily realized by recess of material in the manufacture of the removal unit.

Advantageously, at least one depression in the direction of rotation of the removal unit can be arranged in front of at least one removal structure of the at least one removal section and / or at least one depression can be arranged behind at least one removal structure in the direction of rotation. Depending on the design of the removal structure, the removed material to be pressed can thus be carried out of the processing area in the direction of rotation in front of and / or behind the removal structure. If two ablation structures are arranged one behind the other in the direction of rotation, at least one depression can be arranged between the two ablation structures, ie after the front and in front of the rear ablation structure.

In a further advantageous embodiment, the removal unit can have at least one mounting section for fastening the removal unit to a holding part of a corresponding drive means of the removal device.

Advantageously, the mounting portion can be designed as a shaft, in particular in the form of a bolt or pin. The shaft may be aligned coaxially with the axis of rotation. In this way, the removal unit can rotate with the shaft about the axis of rotation.

Advantageously, at least one mounting portion may be cylindrical. In this way it can be easily realized and connected to the holding part.

Advantageously, the at least one mounting portion can be releasably connected to the holding part of the drive means. In this way, the removal unit can be easily separated for maintenance purposes of the drive means and optionally replaced.

Furthermore, the technical problem is solved according to the invention in the apparatus in that at least one removal section is arranged on an axial end face of the removal unit that is axial relative to the axis of rotation.

In an advantageous embodiment, at least two adjacent removal units can be arranged at a distance from each other. At least two adjacent rotationally drivable removal units can be provided, which are arranged at a distance from each other. When removing excess pressing material from the press material mat, each of the removal units can remove the pressed material in a web-like manner along the production direction, so that each removal unit corresponds to one processing path. The at least two removal units may face the same surface of the pressed material mat, so that their processing paths may overlap and / or supplement one another. In this case, the processing paths can also be supplemented in particular in a spaced manner based on the width of the pressed material mat, without overlapping each other.

Because the at least two adjacent removal units are arranged at a distance from one another, a gap can arise between the two removal units. The removal units can be arranged in this way more flexible, in particular with a greater positional tolerance, relative to each other. Thus, the at least two Abtrageinheiten can also be used more targeted. It can be generated a more accurate or predetermined height of the pressed material mat and / or the basis weight. This has the goal that a predetermined basis weight of pressed material over the expansion of the pressed material mat is achieved. The weight per unit area along the machining paths processed with the removal units can be changed in a targeted manner by setting the corresponding removal units.

The height of the pressed material mat is the distance between the underside of the pressed material mat facing the conveying side of the conveyor track and the surface of the pressed material mat facing away from the conveying side. A width of the pressed material mat is their extension transverse to the direction of production and across the height.

The at least two removal units may be located above the delivery side of the conveyor track. At approximately spatially horizontal orientation of the delivery side and the arrangement of the pressed material mat spatially above the delivery side, the at least two removal units are spatially above the delivery side. "Above the production site" does not necessarily mean "above the production site". In another spatial orientation of the delivery side and / or an arrangement of the pressed material mat spatially below or next to the delivery side, the at least two removal units may indeed be arranged above the delivery side but in particular next to or below the delivery side.

Advantageously, a processing path of at least one of the removal units may extend with respect to their width only over a part of the width of the pressed material mat. Preferably, none of the machining paths of the at least two removal units can extend over the entire width of the pressed material mat. In this way, the processing over the width of the pressed material mat can be divided into several removal units, wherein each removal unit can machine the surface of the pressed material mat along its respective processing path. The Pressgutmatte can be processed with a better spatial resolution across the width.

Advantageously, the device may comprise or be connected to at least one drive means. With the at least one drive means, at least one removal unit can be driven in rotation. In this way, the at least one removal unit can be driven relative to the delivery side of the conveyor track.

Advantageously, the at least one drive means can be adjustable, in particular controllable and / or controllable. In this way, the drive speed of at least one drive means can be adjusted in particular depending on other operating parameters. Such operating parameters may be, in particular, the speed of the conveyor track and / or the basis weight of the pressed product mat.

Advantageously, the at least one drive means may be connected to at least one control device in terms of control and / or regulation. In this way, it can be controlled and / or regulated with the at least control device.

The at least one control device may be part of the device for realizing a predetermined basis weight or be connected to this or be.

Advantageously, at least one removal section of at least one removal unit can be or are arranged relative to the conveyor track such that the at least one removal section moves, in particular rotates, relative to the conveyor track during operation of the device. In this way, an efficiency in the removal of the pressed material can be improved. In this case, advantageously, the speed, in particular the absolute speed, of the at least one removal section may be greater than the conveying speed of the conveyor track, at least in a radially outer area with respect to the corresponding axis of rotation.

Advantageously, the pressed material mat can be conveyed along with the conveyor track on the at least two removal units. The production direction in the region of the conveyor track corresponds in this case to the conveying direction of the conveyor track. In this way, it is not necessary for the at least two removal units to be moved in particular in a translatory manner in addition to their rotation along the production direction. The at least two removal units can thus be arranged stationary.

Advantageously, the device for realizing a predetermined basis weight may comprise at least one control device for controlling the basis weight of the pressed product mat or be connected to such a control device or be. In this way, the basis weight of the pressed material mat can be controlled at least in sections.

Advantageously, a monitoring area of the at least one control device can extend across the entire width of the conveyor track transversely to the production direction. In this way, the basis weight of the pressed product mat can be monitored over its entire width.

Advantageously, the at least one control device can be designed so that it can be spatially resolved transversely to the production direction, in particular along at least one of the machining paths, the basis weight can control. In this way, depending on the respective basis weight, at least one removal unit, which is assigned to the corresponding controlled processing path, can be controlled and / or regulated. Thus, in particular, the distance of the removal section of the at least one removal unit to the conveyor track, ie the height of the removal section above the conveyor track, can be set.

Advantageously, the monitoring area of the at least one control device can be subdivided into several sections. The sections can advantageously be assigned to the machining paths. In this way, the basis weight can be detected in the respective processing paths and controlled with this information, the associated removal units and / or regulated.

Advantageously, viewed in the direction of production, at least one control device can be arranged behind at least one removal unit. In this way, the effect of the corresponding removal unit can be checked with the at least one control device.

Advantageously, at least one control device may comprise or consist of at least one basis weight scale, at least one transmission device or the like. In this way, the basis weight can be determined without contact, in particular by electromagnetic means, preferably by means of light or X-rays.

Advantageously, at least one control device can be connected to at least one control device. In this way, other functional components, in particular at least one drive means and / or at least one lifting device for at least one removal unit, can be controlled and / or regulated depending on the information provided with the control device.

Advantageously, the conveying side of the conveyor track form an at least partially planar support, in particular support, for the pressed material mat. In this way, the pressed material mat can be realized on at least one side.

Advantageously, the conveyor track can be configured as a conveyor belt. A spatially upper run of the conveyor belt can act as a conveying side in the form of a conveying surface. With a conveyor track a continuous flat conveyor surface can be realized.

Advantageously, the device for realizing the predetermined basis weight of a pressing device, in particular a continuously operating press, be viewed upstream in the direction of production. The leveled with the device for realizing a given basis weight Pressgutmatte can be pressed with the pressing device to press plates.

Advantageously, the pressed material mat can have or consist of chips, fibers and / or chips, in particular from biomass, if appropriate with admixture of binders and / or plastics.

In an advantageous embodiment, at least two removal units viewed in the direction of production can be arranged one behind the other. In this way, the surface of the pressed material mat can be processed successively by the respective Abtrageinheiten when passing through the device in the production direction. Thus, overall smoother transitions can be achieved on the surface of the pressed material mat.

Advantageously, at least two removal units arranged one behind the other can be arranged in alignment at least in sections in the direction of production. In this way, their respective machining paths may overlap. Thus, gaps between the processing paths can be avoided.

Alternatively or additionally, advantageously at least two removal units viewed in the direction of production can be arranged next to one another. Their respective processing paths complement each other. In this way, the pressed material mat can be processed over a corresponding greater extent transversely to the direction of production with the Abtragageheiten.

Alternatively or additionally, at least two removal units arranged one behind the other in the direction of production can have no overlapping. Thus, the respective processing paths can be realized side by side without overlapping.

Advantageously, at least two removal units can be arranged on a common holder, in particular a transverse bar. The common bracket can be changed with respect to their distance above the conveyor track. In this way, the at least two removal units can be changed together in their distance from the conveyor track. Alternatively or additionally, at least two removal units can be arranged separately in height above the conveyor track, in particular on a common holder.

Alternatively or additionally, at least two holders viewed in the direction of production can be arranged one behind the other. At least one removal unit can be arranged in each case on each of the at least two holders. In this way, the at least two removal units can be arranged so as to be overlapped in the direction of production.

In a further advantageous embodiment, at least two removal units viewed in the direction of production can be arranged offset from one another. By the displacement of the at least two Abtragageheiten an overlap of the respective processing paths can be reduced. Thus, with at least one rear removal unit viewed in the direction of production, a region of the surface of the pressed material mat can be processed, which lies outside the processing path of at least one front removal unit. In this way, with the at least two removal units, a wider area of the surface of the pressed material mat, viewed transversely to the production direction, can be processed.

Advantageously, additionally or alternatively, at least two removal units viewed in the production direction can at least partially overlap. In this way, the respective processing paths can overlap. Thus, it can be avoided that gaps remain between the processing paths, in particular in the form of strips, in which none of the removal units acts and therefore no pressed material can be removed from the pressed material mat.

Advantageously, at least two removal units viewed in the direction of production can be arranged one behind the other offset from one another. In this way, transitions between different levels of removed zones of the pressed material mat can be better compensated, in particular smoothed. This way, clean transitions between the zones can be achieved.

Alternatively or additionally, at least two removal units, viewed transversely to the production direction, may advantageously be arranged at least in sections in an alignment. In this way, these Abtrageinheiten along the production direction can be arranged next to each other to save space.

Alternatively or additionally, at least two removal units, viewed transversely to the production direction, may advantageously be arranged at least partially offset relative to one another. In this way, the at least two removal units can be arranged more variable.

Advantageously, at least three removal units may be provided, at least two of which are arranged one behind the other as viewed in the direction of production and at least two viewed in the direction of production are arranged next to one another. In this way, for example, excess material to be pressed can be removed even more optimally.

In a further advantageous embodiment, at least two removal units viewed in the direction of production can be arranged next to one another at a distance from one another, and at least one third removal unit can be viewed behind the first two in the production direction Abtrageinheiten offset to be arranged so that it lies at least partially in alignment with a gap between the two first Abtrage units. In this way, the gap between the processing paths of the first two Abtragageheiten be covered with the third removal unit and optionally be removed there pressed material.

In a further advantageous embodiment, at least one removal unit with respect to their distance to the delivery side of the conveyor track can be changed. In this way, a removal depth can be set on the surface of the pressed material mat and thus the height of the pressed material mat and / or the basis weight can be specified.

Advantageously, at least two removal units can each be changed separately with respect to their distance from the delivery side. In this way, the height arrangement can be varied in the processing paths.

Advantageously, the device may comprise at least one lifting device or be connected to such. With the at least one lifting device, at least one removal unit can be moved to change its distance to the delivery side.

Advantageously, at least one lifting device can be adjustable, in particular controllable and / or controllable. In this way, the at least one lifting device can be adjusted in particular with a corresponding control device.

In a further advantageous embodiment, respective distances of at least two removal units to the delivery side can be changed separately from one another. In this way, the removal units can be adjusted depending on the profile of the basis weight in order to realize a uniform weight per unit area over the pressed material mat, in particular the width of the pressed material mat.

In a further advantageous embodiment, a lateral position of at least one removal section of at least one removal unit can be changed relative to the conveyor track. The lateral position of a Abtragabschnitts is its position transverse to an imaginary distance line to the conveying side of the conveyor track. In this way, distances between the Abtragageheiten be changed.

Advantageously, at least one removal section can be moved transversely, in particular perpendicularly, to the production direction in order to change its lateral position. Thus, the positions of the machining tracks over the width of the pressed material mat and any overlapping of adjacent machining tracks can be varied.

Alternatively or additionally, at least one removal section can be moved parallel or obliquely to the production direction in order to change its lateral position. In this way, a distance between viewed in the direction of production consecutively arranged Abtragabschnitten be changed.

In a further advantageous embodiment, at least one axis of rotation of at least one removal unit can be aligned perpendicular or obliquely to the delivery side of the delivery path and / or perpendicular or obliquely to the production direction. In this way, the end-side at least one removal section can process the surface of the pressed material mat. The at least one axis of rotation can also be oriented slightly obliquely instead of perpendicular to the delivery side and perpendicular to the production direction.

Advantageously, the at least one removal device may have different removal units, in particular with different orientation of their respective axis of rotation.

In a further advantageous embodiment, respective axes of rotation of at least two removal units may extend parallel to each other. In this way, the surface of the pressed product mat can be processed in a uniform manner. Thus, the weight per unit area can be set and realized more optimally along the press mat.

Advantageously, the device for realizing a predetermined basis weight may have at least one removal device for removed pressed material or be combined with at least one such removal device. With the at least one removal device, the removed pressed material can be removed from the pressed material mat.

Advantageously, at least one removal device can have at least one suction device. With a suction device, the removed material to be pressed can be sucked off without contact.

Advantageously, at least one suction opening of at least one suction device may be arranged on the side of at least one removal unit facing away from the delivery side, in particular above at least one removal unit. In this way, with the at least one suction device, the removed pressed material can be directly sucked off, without the at least one removal device being hindered.

Advantageously, at least one removal device can be arranged at a transition between at least two removal units. In this way, any unevenness on the surface of the pressed material mat in the area of the transitions can be smoothed out by suction of loose pressed material, in particular removed.

Advantageously, at least one removal device may be part of the device for realizing a predetermined basis weight. Alternatively, the device can be combined with at least one removal device. In this case, the at least one removal device can be configured as a separate module.

Furthermore, the technical problem is solved according to the invention in the system in that at least one removal section of at least one removal unit is arranged on an axial end face of the removal unit which is axial relative to the corresponding axis of rotation.

In addition, the technical problem is solved according to the invention in the method that the surface of the pressed material mat with at least one removal of at least one removal unit, which is arranged on an axis of rotation with respect to the axial end face of the removal unit is processed with a circular movement about the axis of rotation.

Incidentally, the features and advantages shown in connection with the removal unit according to the invention, the device according to the invention, the installation according to the invention and the method according to the invention and their respective advantageous embodiments apply mutatis mutandis and vice versa. The individual features and advantages can, of course, be combined with one another, whereby further advantageous effects can be achieved that go beyond the sum of the individual effects.

• 1 einen Ausschnitt einer Anlage zur Herstellung von Pressgutmatten im Zuge der Herstellung von Werkstoffplatten in einer Seitenansicht im Bereich einer Vorrichtung zur Realisierung eines vorgegebenen Flächengewichts der Pressgutmatte, mit Abtrageinheiten zum Abtragen überschüssigen Pressguts;
• 2 den Ausschnitt der Anlage aus der 1 in der Draufsicht;
• 3 eine der Abtrageinheiten aus den 1 und 2 in der Seitenansicht mit einem nicht näher betrachteten Halteteil eines Antriebsmittels;
• 4 die Abtrageinheit aus der 3 in der Unteransicht.

Further advantages, features and details of the invention will become apparent from the following description in which an embodiment of the invention with reference to the drawings is explained in more detail. The person skilled in the art will expediently also individually consider the features disclosed in the drawing, the description and the claims in combination and combine these into meaningful further combinations.
It show schematically

• 1 a section of a plant for the production of pressed material mats in the course of the production of material plates in a side view in the range of a device for realizing a predetermined basis weight of the pressed material mat, with Abtragageheiten for removing excess pressed material;
• 2 the section of the plant from the 1 in the plan view;
• 3 one of the removal units from the 1 and 2 in the side view with an unsupported holding part of a drive means;
• 4 the removal unit from the 3 in the bottom view.

In the figures, the same components are provided with the same reference numerals.

In the 1 and 2 is a section of a plant 10 for the production of press plates, for example, material plates made of wood and / or other renewable agricultural products, such as chip, fiber, straw and Schnitzelplatten, and plastic plates, shown in a side view and in a plan view.

The attachment 10 includes a scattering head 12 which is located on an input side of the plant 10 , in the 1 and 2 on the left. With the scattering head 12 is usually free-flowing material 14 which is in the 1 indicated by an arrow on the beginning of a conveyor track 16 scattered. The conveyor track 16 is exemplary configured as a so-called endless belt. A conveyor side of the conveyor track 16 is in the form of a conveyor surface 18 , which with the spatially upper strand of the conveyor track 16 is realized extends, for example, spatially approximately horizontally, in the 1 and 2 left to right.

In the 1 to 4 For the sake of easier orientation, the respective axes are orthogonal xyz Coordinate system shown. The z Axis extends perpendicular to the conveying surface 18 , the x Axis runs parallel to the conveying surface 18 and parallel to a production direction 20 the plant 10 and the y Axis runs parallel to the conveying surface 18 and across the production line 20 , The y Axis defines the width of the conveyor surface 18 ,

The scattering head 12 is designed so that the pressed material 14 as Pressgutmatte 22 across the width of the conveyor surface 18 scattered as evenly as possible or distributed according to a predetermined pattern. In production direction 20 looked behind the scattering head 12 is a device 24 to realize a predetermined basis weight of the pressed material mat 22 arranged. In production direction 20 behind the device 24 there is a press arrangement 26 , For example in the form of a continuous press, with the press material mat 22 is pressed in a manner not of interest here to a press plate.

The device 24 includes a removal device 28 for removing excess pressed material on the surface of the pressed material mat 22 , a withdrawal facility 30 for removing the removed pressed material 32 which is in the 1 is indicated, and a control device 34 for controlling the basis weight of the pressed material mat 22 , Furthermore, the device comprises 24 a control device 36 which in the 2 is indicated and with the removal device 28 and the control device 34 is technically connected. The control device 36 For example, in an otherwise not shown control device of the system 10 be integrated or connected to this.

The removal device 28 has two exemplary removal orders 38 with a total of five removal units 40 on. The in production direction 20 considers first ablation arrangement 38 includes three of the removal units 40 , The in production direction 20 considers second ablation arrangement 38 includes two of the removal units 40 ,

The removal units 40 are essentially identical. The removal units 40 are exemplary configured as a finger milling. One of the removal units 40 is in the 3 and 4 shown in detail. Each of the removal units 40 has a mounting section 42 in the form of a cylindrical shaft which is coaxial with an imaginary axis of rotation 44 is arranged. The axes of rotation 44 are exemplary perpendicular to the conveyor surface 18 and perpendicular to the production direction 20 , so parallel to z -Axis and therefore parallel to each other, aligned. The axes of rotation 44 the removal units 40 which for the same Abtraganordnung 38 belong, for example, in a corresponding imaginary plane perpendicular to the production direction 20 So next to each other.

The respectively adjacent removal units 40 the same removal arrangement 38 are spaced from each other. In addition, the respective adjacent Abtragageinheiten 40 the first removal arrangement 38 and the second ablation assembly 38 spaced apart. Between each adjacent spaced apart Abtragageheiten 40 There is a corresponding gap in each case.

The removal units 40 are by means of a lifting unit 46 in their respective distance to the conveyor surface 18 So in the direction of z -Axis, individually height-adjustable. The lifting unit 46 is part of the removal device 28 and control technology with the control device 36 connected. The lifting unit 46 exemplarily comprises two parts, for example with transom, each one of the Abtraganordnungen 38 assigned.

After the 3 and 4 are the removal units 40 by means of a drive means 66 around their respective axis of rotation 44 driven in rotation. The removal units 40 are this by means of their mounting sections 42 with corresponding holding parts 68 of the drive means 66 connected. The holding parts 68 are with the lifting unit 46 in height above the conveying surface 18 adjustable to the appropriate removal units 40 to adjust in height.

The with respect to the respective axis of rotation 42 axial end face of each of the removal units 40 has, for example, a circular disk, which has a corresponding end-side removal section 48 includes. With the removal sections 48 can the surface of the pressed material mat 22 by rotation of the respective removal unit 40 be processed and the pressed material to be removed.

Each removal section 48 includes two teeth 50 in the form of oblique surfaces. The teeth 50 extend with respect to the axis of rotation 44 radially opposite sides each approximately in the radial direction from the center to the radially outer edge of the Abtragabschnitts 46 , In a direction of rotation 52 the removal unit 40 before every tooth 50 has the removal section 46 one with respect to the axis of rotation 44 axial recess in the form of a recess 54 on. In the recesses 54 Ablated pressed material can be transported out radially out of the processing area.

With each of the removal units 40 if necessary and the corresponding removal unit 40 is lowered accordingly, with respect to the axis of rotation 44 radially outer diameter of their Abtragabschnitts 48 extending the surface of the pressed material mat 22 edited, so in production direction 20 behind the respective removal unit 40 on the pressed material mat 22 a machining path having the width of the diameter of the corresponding Abtragabschnitts 48 arises. The processing tracks of the adjacent Abtragageheiten 40 the same removal arrangement 38 are spaced apart and do not overlap.

The two outer removal units 40 the first removal arrangement 38 each project beyond the pressed material mat 22 , The middle removal unit 40 is approximately in the middle between the two outer removal units 40 arranged. Behind the first removal arrangement 38 arise as two web-like strips between the corresponding processing paths, in which before reaching the second Abtraganordnung 38 no pressed material is removed.

The removal units 40 the second removal arrangement 38 are each offset to the removal units 40 the first removal arrangement 38 arranged. Each removal unit 40 surmounted, in production direction 20 considered, a respective gap between the respective adjacent Abtragageheiten 40 the first removal arrangement 38 , Accordingly, the processing tracks of the Abtragageheiten overlap 40 the second removal arrangement 38 with the processing tracks of the corresponding adjacent removal units 40 the first removal arrangement 38 , With the removal units 40 the second removal arrangement 38 is in this way, if necessary, pressed material in the web-like strip between the processing tracks of Abtrageinheiten 40 the first removal arrangement 38 ablated.

In addition, the removal units 40 the second removal arrangement 38 radial to their axes of rotation 44 and perpendicular to the production direction 20 So in the direction of y -Axis, movable. The lateral positions of the ablation units 40 the second removal arrangement 38 can be this way perpendicular to the production direction 20 and parallel to the conveying surface 18 to be changed. So can a distance between the Abtragageheiten 40 the second removal arrangement 38 to be changed. The removal units 40 In this way, they can be optimally positioned to fill in the gaps between the adjacent removal units 40 the first removal arrangement 38 cover. Optionally, the distances between the Abtrageinheiten 40 the first removal arrangement 38 be changeable.

The removal device 30 includes two aspirators 56 which in the 1 indicated and in the 2 the sake of clarity are not shown. Every aspirator 56 is one of the removal orders 38 assigned. The respective intake 58 is spatially above the corresponding Abtragageinheiten 40 ,
The control device 34 is exemplified as a so-called basis weight scale designed. The control device 34 includes a radiation source 60 , whose measuring beam through the pressed material mat 22 on a sensor 64 for determining the basis weight of the pressed material mat 22 falls and thus is detected. The control device 34 is designed so that they the basis weight in the respective processing paths of Abtrageinheiten 40 determined separately and correspondingly spatially resolved.

When operating the system 10 becomes the pressed material 14 with the scattering head 12 on the conveyor surface 18 the conveyor belt 16 scattered and so the Pressgutmatte 22 realized. The pressed material mat 22 is continuous with the conveyor track 16 in production direction 20 through the plant 10 promoted. With the press arrangement 26 becomes the pressed material mat 22 pressed in a manner not of interest here to a press plate.

In a method for realizing a predetermined basis weight of the pressed product mat is with the control device 34 the basis weight over the width of the pressed material mat 22 in the respective processing paths 47 certainly.

Are from the control device 34 If a misregistration or an error in the basis weight is detected in one or more of the machining paths, the height adjustment of the corresponding removal unit (s) is regulated. 40 via the control device 36 , With the control device 36 become the lifting units 46 controlled accordingly to the distances of the respective Abtragageheiten 40 to the conveyor surface 18 to change. The distances of the removal units 40 are changed so that corresponding amounts of too much applied pressed material 14 for realizing a predetermined basis weight of the pressed material mat 22 be removed. At the same time, the surface of the pressed material mat becomes 22 with the removal sections 48 the corresponding removal units 40 at the with respect to the axes of rotation 44 axial end faces of the Abtragageinheiten 40 with circular movements around the respective axes of rotation 44 processed. The removed pressed material 14 is with the aspirators 56 the removal device 30 from the surface of the pressed material mat 22 sucked off and removed.

The height adjustment of the removal units 40 depends on the measurement of the control device 34 continuously regulated, so that a given basis weight of pressed material 14 over the entire width and the entire length of the pressed material mat 22 is reached. In this way, a press plate can be produced which meets the requirements in an optimal manner.

LIST OF REFERENCE NUMBERS

10

investment

12

spreading head

14

pressed material

16

conveyor track

18

conveying surface

20

production direction

22

press material mat

24

Device [for realizing a given basis weight]

26

Press arrangement

28

the removal device

30

removal device

32

Pressed material (removed / removed)

34

control device

36

control device

38

The degradation

40

dismounting

42

mounting portion

44

axis of rotation

46

lifting unit

48

abrading

50

Teeth of the Abtragabschnitts 48

52

direction of rotation

54

recess

56

Aspiration

58

Intake port Extractor 56

60

radiation source

64

sensor

66

drive means

68

holding parts

Claims (16)

Removal unit (40) of a removal device (28) for removing pressed material (32), wherein the removal device (28) part of a device (24) for realizing a predetermined basis weight of a on a conveyor track (16) scattered Pressgutmatte (22) in the course of manufacture of pressing plates, in particular material plates made of wood or other renewable agricultural products, such as chip, fiber, straw and Schnitzelplatten, and plastic plates is, wherein the removal unit (40) about an imaginary axis of rotation (44) is driven in rotation and at least one removal section ( 48), with which a surface of the pressed material mat (22) can be machined, characterized in that at least one removal section (48) is arranged on an axis of rotation (44) axial end face of the removal unit (40). Removal unit after Claim 1 , characterized in that at least one removal section (48) has at least one removal structure, in particular a structured surface, at least one bristle, at least one projection, at least one point, at least one tooth (50), at least one blade, at least one blade and / or at least a hook or the like. Removal unit after Claim 1 or 2 , characterized in that at least one removal portion (48) at least one with respect to the axis of rotation (44) axial recess (54). Removal unit according to one of the preceding claims, characterized in that the removal unit (40) has at least one mounting portion (42) for fastening the removal unit (40) to a holding part of a corresponding drive means of the removal device (28). Apparatus (24) for realizing a predetermined weight per unit area of a press material mat (22) scattered on a conveyor track (16) in the course of producing press plates, in particular wood or other renewable agricultural products such as chip, fiber, straw and chipboard, and Plastic plates, wherein the device (24) at least one removal device (28) for removing pressed material (32), which at least one around a respective imaginary axis of rotation (44) rotatably driven removal unit (40), according to one of the preceding claims, with at least one Abtragabschnitt (48) which is arranged above a conveying side (18) of the conveyor track (16) and with which the facing surface of the pressed material mat (22) along a production direction (20) can be processed, characterized in that at least one removal section (48 ) is arranged on a relative to the axis of rotation (44) axial end face of the removal unit (40). Device after Claim 5 , characterized in that at least two adjacent Abtragageheiten (40) are arranged spaced from each other. Device after Claim 5 or 6 , characterized in that at least two removal units (40) are arranged one behind the other in the direction of production (20). Device according to one of Claims 5 to 7 , characterized in that at least two removal units (40) viewed in the production direction (20) are arranged offset from one another. Device according to one of Claims 5 to 8th , characterized in that at least two removal units (40) viewed in the production direction (20) spaced apart from each other are arranged and arranged at least one third removal unit (40) in the production direction (20) behind the two first mentioned Abtrageinheiten (40) offset to this so arranged in that it lies at least partially in alignment with a gap between the two first-mentioned removal units (40). Device according to one of Claims 5 to 9 characterized in that at least one removal unit (40) with respect to their distance from the delivery side (18) of the conveyor track (16) is variable. Device according to one of Claims 5 to 10 , characterized in that respective distances from at least two removal units (40) to the delivery side (18) are separately variable. Device according to one of Claims 5 to 11 , characterized in that a lateral position of at least one removal section (48) of at least one removal unit (40) relative to the conveyor track (16) is variable. Device according to one of the previous Claims 5 to 12 , characterized in that at least one axis of rotation (44) of at least one removal unit (40) is aligned perpendicular or oblique to the delivery side (18) of the conveyor track (16) and / or perpendicular or oblique to the production direction (20). Device according to one of the previous Claims 5 to 13 , characterized in that respective axes of rotation (44) of at least two removal units (40) extend parallel to each other. Plant (10) for the production of press plates, in particular material plates made of wood or other renewable agricultural products, such as chip, fiber, straw and Schnitzelplatten, and plastic plates, comprising at least one conveyor track (16), at least one scattering device (12) for the scattering of Pressed material (14) on a conveying side (18) of the at least one conveyor track (16) for realizing at least one pressed material mat (22) and at least one device (24) for realizing a predetermined areal density of the at least one pressed material mat (22) according to one of the preceding claims wherein the device (24) for realizing the predetermined surface density comprises at least one removal device (28) for removing pressed material (32), which has at least one removal unit (40) which can be driven in rotation about a respective imaginary rotation axis (44) with at least one removal section (48 ), which is arranged above the delivery side (18) of the at least one conveyor track (16) and m in that the facing surface of the pressed material mat (22) can be machined along a production direction (20), characterized in that at least one removal section (48) of at least one removal unit (40) at an axial end face of the removal unit (8) with respect to the corresponding rotation axis (44). 40) is arranged. Method for realizing a given basis weight of a pressed material mat (22) scattered on a delivery side (18) of a conveyor track (16) in the course of producing press plates, in particular material plates made of wood or other renewable agricultural products, such as chipboard, fiber, straw and chipboard plates , and plastic plates, wherein at least one removal unit (40) with at least one removal section (48) above the delivery side (18) of the conveyor track (16) and is driven to rotate about an imaginary axis of rotation (44) and with the at least one removal section (48). the facing surface of the pressed material mat (22) is machined along a production direction (20), characterized in that the surface of the pressed material mat (22) is provided with at least one removal section (48) of at least one removal unit (40) arranged on a pivot axis (44 ) axial end face of the removal unit (40) is arranged, with a circular movement about the Rotary axis (44) is processed.

Images