DE102017103457A1 - Device for realizing a predetermined basis weight of a product to be spread on a conveyor belt mat, preferably in the course of the production of material plates - Google Patents

Abstract

There are a device (24) for realizing a predetermined basis weight of a on a conveyor belt (16) scattered Pressgutmatte (22) 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 Schnitzel plates, as well as plastic plates described. The device (24) 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 with respect to a respective rotation axis (42) and has at least one removal section (46) which is located above a delivery side (46). 18) of the conveyor belt (16) is arranged and with which the facing surface of the pressed material mat (22) along a production direction (20) can be processed. At least two adjacent removal units (40) are arranged at a distance from each other. In a further embodiment of the invention, the removal units may have preferred removal forms. Further, the invention discloses a hold-down device adjacent to the removal unit.

Description

The invention relates to a device for realizing a predetermined weight per unit area of a press material mat sprinkled on a conveyor belt, preferably in the course of the production of material plates, according to the preamble of claim 1.

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 belt 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 belt. The Scalperwalze is formed over its longitudinal extent at least on its surface of several Scalperwalzen sections. The distance between the surface of each scalper roll section and the conveyor belt is variable independently of other scalper 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 belt. With the arrangement, a leveling or desired distribution of the amount of bulk material resting on the conveyor belt should also be feasible in terms of its weight per unit area. A disadvantage of this device has been found that between the individual sections traces or elevations on the surface of the mat can arise. This happens especially when adjacent Scalperwalzen are at different heights or distance to the forming belt and

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 resource and cost-saving. 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 device 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 in the device in that at least two adjacent Abtrageinheiten are spaced from each other.

According to the invention, at least two adjacent rotationally drivable removal units are provided, which are arranged at a distance from one another. With the removal units can excess Pressed material to be removed from a scattered Pressgutmatte. In this case, 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 a processing path. The at least two removal units are located on the same side of the pressed material mat, so that their processing paths can overlap and / or supplement. 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 is created 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 produced a more uniform height of the pressed material mat. This has the goal that a more uniform 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 belt 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 are located above the delivery side of the conveyor belt. 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 under or in addition to the delivery side, the at least two removal units may indeed be arranged above the delivery side but spatially in particular next to or below the delivery side.

Advantageously, at least one of the removal units can extend over only a part of the width of the pressed material mat. Preferably, none 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 unit. With the at least one drive unit, at least one removal unit can be driven in rotation. In this way, the at least one drive unit can be driven relative to the delivery side of the conveyor belt.

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

Advantageously, the at least one drive unit can 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.

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

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

Advantageously, at least one removal section of at least one removal unit may be arranged relative to the conveyor belt such that the at least one removal section moves relative to the conveyor belt during operation of the device, in particular rotates. In this way, an efficiency in the removal of the pressed material can be improved. Advantageously, the speed, in particular the absolute speed, of the at least one Abtragabschnitts be greater than the conveying speed of the conveyor belt at least in a radially outer region relative to the respective axis of rotation.

Advantageously, at least a part of at least one removal section can at least temporarily move counter to the direction of production. In this way, a relative speed between the at least one part of the at least one removal section and the conveyor belt and thus the pressed material mat can be increased. So the pressed material can be removed better.

Advantageously, the pressed material mat can be conveyed with the conveyor belt along the at least two removal units. The production direction in the region of the conveyor belt corresponds in this case to the conveying direction of the conveyor belt. 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 belt 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. In particular, the distance of the removal section of the at least one removal unit to the conveyor belt, that is to say the height of the removal section above the conveyor belt, can be adjusted.

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 unit 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 belt 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 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 when passing through the device in the production direction successively from the respective Removal units are processed. 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 machined over a correspondingly larger extent transversely to the direction of rotation with the removal units.

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.

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 and / or more uniformly.

In a further advantageous embodiment, viewed in the production direction, at least two removal units can be arranged next to one another at a distance from one another and at least one third removal unit can be arranged behind the two first-mentioned removal units in the production direction such that it lies at least in sections in alignment with a gap between them the first two Abtragageinheiten. 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 belt 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 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. At least a lifting device can be moved at least one removal unit 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. The lateral position of a Abtragabschnitts is its position transverse to an imaginary distance line to the conveying side of the conveyor belt. 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 successively arranged Abtragabschnitt be changed.

In a further advantageous embodiment, at least one removal section of at least one removal unit can be arranged circumferentially with respect to its axis of rotation and / or at least one removal section of at least one removal unit can be arranged axially frontally relative to its axis of rotation.

Advantageously, at least one removal unit can have at least one removal section extending at least partially around its axis of rotation. The at least one removal unit can have a total of a roller shape, wherein the at least one removal section is formed on the peripheral side of the roller. Advantageously, the roller may be coaxial with the axis of rotation, so that a uniform rotation is possible. Advantageously, at least one removal unit can be designed as a so-called scalper roller.

Advantageously, at least one roller-like removal unit chamfered on at least one peripheral edge or rounded, in particular provided with a radius, be. In this way, a smoother transition can be achieved at the corresponding edge of the machining path.

Alternatively or additionally, at least one roller-like removal unit may advantageously have a varying profile over its axial length, in particular arched or cambered. Thus, the transitions at the edges of the processing path can be further smoothed. In particular, at least one removal unit can be realized as a barrel body.

Alternatively or additionally, advantageously at least one roller-like removal unit can be composed over its axial length of a plurality of in particular disc-like removal elements. In this way, it is easily possible to vary an axial extent of the at least one removal unit which is axial relative to the axis of rotation by using a corresponding number of removal elements and / or removal elements having corresponding, in particular different axial thicknesses. The at least one removal unit can be constructed modular in this way and optionally varied as needed.

Alternatively or additionally, at least one removal unit may have at least one removal section which is arranged axially frontally relative to its axis of rotation. The axis of rotation of the at least one removal unit can be arranged perpendicular or oblique to the delivery side.

In a further advantageous embodiment, at least one rotation axis of at least one removal unit can be aligned parallel or obliquely to the delivery side of the conveyor belt and / or perpendicular or oblique to the production direction and / or at least one axis of rotation of at least one removal unit can be perpendicular or oblique to the delivery side of the conveyor belt and / or perpendicular or oriented obliquely to the direction of production.

Advantageously, at least one axis of rotation of at least one removal unit can be aligned parallel to the delivery side and perpendicular to the production direction. In this case, a circumferential Abtragabschnitt rotate in or against the production direction and edit the surface of the pressed material mat. The at least one axis of rotation can instead of parallel to the delivery side and also be slightly inclined perpendicular to the direction of production.

Alternatively or additionally, at least one axis of rotation of at least one removal unit can be aligned perpendicular to the delivery side and perpendicular to the production direction. In this case, a front-side Abtragabschnitt edit 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 basis weight along the pressed material mat can be realized in a more predetermined manner.

In a further advantageous embodiment, the device for realizing a predetermined basis weight may comprise at least one removal device for removed pressed material or be combined with at least one such removal device or be. 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.

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 material to be pressed 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.

Advantageously, a hold-down device, preferably a sliding plate, an endlessly circulating belt and / or a roller, may be arranged adjacent to the removal unit. This hold-down device can also serve as a smoothing device and on the one hand prevent a burr in the removal of material but also to avoid that unneeded matted or longer material is mitentnommen in the neighboring areas and thus unsightly frayed edges arise during removal.

Preferably, the hold-down device is arranged in the direction of production on both sides and / or upstream and / or downstream of the Abtutageinheit.

Preferably, the hold-down device includes independent drive for height and / or lateral adjustment and / or for adjusting the peripheral speed of the belt, the roller or the roller.

For the purposes of the invention, it is also an appropriate plant to propose, which is suitable to create a Pressgutmatte with a predetermined basis weight. In particular, in the course of the production of material plates in conjunction with a press.

For the purposes of the invention, it is also an appropriate method to propose, which is suitable to create a Pressgutmatte with a predetermined basis weight. In particular, in the course of the production of material plates in conjunction with a press.

Incidentally, the features and advantages shown in connection with the device according to the invention, the system and the method 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 in einer Seitenansicht im Bereich einer Vorrichtung zur Realisierung eines vorgegebenen Flächengewichts der Pressgutmatte mit Abtrageinheiten zum Abtragen überschüssigen Pressguts gemäß einem ersten Ausführungsbeispiel;
• 2 den Ausschnitt der Anlage aus der 1 in der Draufsicht;
• 3 eine Detailansicht des Ausschnitts der Vorrichtung aus der 2 mit der Pressgutmatte und den Abtrageinheiten;
• 4 eine Abtrageinheit gemäß einem zweiten Ausführungsbeispiel in der Draufsicht;
• 5 eine Abtrageinheit gemäß einem dritten Ausführungsbeispiel in der Draufsicht;
• 6 eine Abtrageinheit gemäß einem vierten Ausführungsbeispiel in der Draufsicht;
• 7 eine Abtrageinheit gemäß einem fünften Ausführungsbeispiel in der Draufsicht;
• 8 ein Abtragelement der Abtrageinheit aus der 7 in der Seitenansicht;
• 9 eine Niederhaltevorrichtung benachbart zum Abtragelement in einem ersten Ausführungsbeispiel als Gleitblech in einer Seitenansicht und einer Ansicht entgegen der Produktionsrichtung;
• 10 eine Niederhaltevorrichtung benachbart zum Abtragelement in einem zweiten Ausführungsbeispiel als endlos umlaufendes Band in einer Seitenansicht und einer Ansicht entgegen der Produktionsrichtung;
• 11 einen Ausschnitt einer Anlage zur Herstellung von Pressgutmatten in einer Seitenansicht mit Abtrageinheiten gemäß einem sechsten Ausführungsbeispiel;
• 12 den Ausschnitt der Anlage aus der 10 in der Draufsicht.

Further advantages, features and details of the invention will become apparent from the following description, are explained in more detail in the embodiments of the invention with reference to the drawing. The person skilled in the art will use the drawings, the description and the claims in combination expediently also individually consider disclosed features and summarize meaningful further combinations. It show schematically

• 1 a section of a plant for the production of pressed material mats in a side view in the region of a device for realizing a predetermined basis weight of the pressed product mat with Abtragageheiten for removing excess pressed material according to a first embodiment;
• 2 the section of the plant from the 1 in the plan view;
• 3 a detailed view of the detail of the device of the 2 with the pressed material mat and the removal units;
• 4 a removal unit according to a second embodiment in plan view;
• 5 a removal unit according to a third embodiment in plan view;
• 6 a removal unit according to a fourth embodiment in plan view;
• 7 a removal unit according to a fifth embodiment in plan view;
• 8th a removal element of the removal unit from the 7 in the side view;
• 9 a holding-down device adjacent to the removal element in a first embodiment as a sliding plate in a side view and a view opposite to the production direction;
• 10 a hold-down device adjacent to the removal element in a second embodiment as an endlessly circulating belt in a side view and a view opposite to the production direction;
• 11 a section of a plant for the production of pressed material mats in a side view with Abtragageheiten according to a sixth embodiment;
• 12 the section of the plant from the 10 in the plan view.

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

In the 1 to 3 is a section of a plant 10 for the production of press plates, for example, material boards made of wood and / or other renewable agricultural products, such as chip, fiber, straw and Schnitzelplatten, and plastic plates, shown in different views.

The attachment 10 includes a scattering head 12 which is located on an input side of the plant 10 located. With the scattering head 12 becomes pressed material 14 which is in the 1 indicated by an arrow on the beginning respectively on the upper run of a conveyor belt 16 scattered. The conveyor belt 16 is exemplary configured as a so-called endless belt. A conveyor side of the conveyor belt 16 in the form of a conveying surface 18 passing through the spatially upper run of the conveyor belt 16 is realized extends, for example, spatially approximately horizontally.

In the figures, the respective axes of an orthogonal xyz coordinate system are partially shown for ease of orientation. The z-axis extends perpendicular to the conveying surface 18 , the x-axis runs parallel to the conveyor surface 18 and parallel to a production direction 20 the plant 10 and the y-axis is parallel to the conveying surface 18 and across the production line 20 , The y-axis defines the width of the conveyor surface 18 respectively the pressed material mat 22 ,

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.

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 pressing assembly 26, for example in the form of a continuously operating press, with which the Pressgutmatte 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, which in the 1 through arrows 32 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, 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 removal unit arrangements by way of example 38 with a total of five removal units 40 on. The in production direction 20 considers first removal unit arrangement 38 includes three of the removal units 40 , The in production direction 20 considers second removal unit arrangement 38 includes two of the removal units 40 ,

The removal units 40 are essentially identical. The removal units 40 are exemplified as circular cylindrical removal rollers configured. Each of the removal units 40 has an axis of rotation 42 on, on which the removal roller is arranged coaxially. The axes of rotation 42 are exemplary parallel to the conveyor surface 18 and perpendicular to the production direction 20 , ie parallel to the y-axis, aligned. The axes of rotation 42 the removal units 40 leading to the same removal unit arrangement 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 same removal unit arrangement 38 are spaced from each other. In addition, the respective adjacent Abtragageinheiten 40 the first removal unit arrangement 38 and the second removal unit arrangement 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 44 in their respective distance to the conveyor surface, ie in the direction of the z-axis, individually height adjustable. The lifting unit 44 is part of the removal device 28 and control technology with the control device 36 connected. The lifting unit 44 exemplarily comprises two parts, each one of the removal unit assemblies 38 assigned. Furthermore, the removal units 40 by means of a drive unit not of interest here about its respective axis of rotation 42 driven in rotation.

The with respect to the respective axis of rotation 42 circumferential side of each of the removal units 40 forms a corresponding removal section 46 , With the removal sections 46 can the surface of the pressed material mat 22 by rotation of the respective removal unit 40 be processed, respectively, the crops are removed.

The surfaces of the removal sections 46 are each structured. They are for example provided with bristles, projections, teeth, teeth, blades, knives, hooks or the like.

With each of the removal units 40 if necessary and the corresponding removal unit 40 is lowered accordingly, about her with respect to the axis of rotation 42 axial length 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 47 with the width of the axial length of the corresponding removal unit 40 arises. In the 3 are the limits of the machining paths 47 dash-dotted indicated. The processing tracks 47 the neighboring removal units 40 same removal unit arrangement 38 are spaced apart and do not overlap.

The two outer removal units 40 the first removal unit 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 unit arrangement 38 arise so two web-like strips between the corresponding processing paths 47 in which before reaching the second Abtrageinheitsanordnung 38 no pressed material is removed.

The removal units 40 the second removal unit arrangement 38 are each offset to the removal units 40 the first removal unit arrangement 38 arranged. Each removal unit 40 surmounted, in production direction 20 considered, a respective gaps between the respective adjacent Abtragageheiten 40 the first removal unit arrangement 38 , Accordingly, the processing tracks 47 of the Abtragageheiten overlap 40 the second removal unit arrangement 38 with the processing tracks 47 the corresponding adjacent Abtragageheiten 40 the first removal unit arrangement 38 , With the removal units 40 the second removal unit arrangement 38 In this way, if necessary, pressed material in the web-like strip between the processing tracks 47 the removal units 40 the first removal unit arrangement 38 ablated.

In addition, the removal units 40 the second removal unit arrangement 38 axially to their axes of rotation 42 , ie in the direction of the y-axis, movable. The lateral positions of the ablation units 40 the second removal unit arrangement 38 can be this way perpendicular to the production direction 20 and changed parallel to the conveying surface 18. So can a distance 48 between the removal units 40 the second removal unit arrangement 38 which is in the 3 indicated by a double arrow, 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 unit arrangement 38 cover. Optionally, the distances between the Abtrageinheiten 40 the first removal unit arrangement 38 be changeable.

The removal device 30 includes two aspirators 50 which in the 1 indicated and in the 2 the sake of clarity are not shown. Every aspirator 50 is one of the removal unit arrangements 38 assigned. The respective intake 52 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 54 , whose measuring beam through the pressed material mat 22 on a sensor 58 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 47 the removal units 40 determined separately and correspondingly spatially resolved.

When operating the system 10 becomes the pressed material 14 with the scattering head 12 evenly on the conveyor surface 18 of the conveyor belt 16 scattered and so the Pressgutmatte 22 realized. The pressed material mat 22 is continuous with the conveyor belt 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 a misregistration or grammage error in one or more of the machining paths 47 detected, then a regulation of the height adjustment of the corresponding removal unit (s) 40 via the control device 36 , With the control device 36 The lifting units 44 are driven 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 removed, for example, abraded, demolished or cut off or the like. The removed pressed material 14 is with the aspirators 50 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 predetermined pressure plate can be produced.

In the 4 is a removal unit 40 shown according to a second embodiment. In contrast to the removal units 40 according to the first embodiment of the 1 to 3 are in the second embodiment, the edges of the circular cylindrical removal unit 40 rounded. In this way, smoother transitions between the machining paths 47 be achieved.

In the 5 is a removal unit 40 shown according to a third embodiment. In contrast to the second embodiment of the 4 In the third embodiment, the edges of the removal unit 40 chamfered.

In the 6 is a removal unit 40 shown according to a fourth embodiment. In contrast to the removal units 40 From the first three embodiments, the removal unit is in the fourth embodiment 40 cambered, designed as a barrel, for example.

In the 7 is a removal unit 40 shown according to a fifth embodiment. In contrast to the removal units 40 According to the first four embodiments, in the fifth embodiment, the removal unit 40 from several disc-like ablation elements 560 composed. The removal elements 560 are each coaxial with the axis of rotation 42 and arranged next to each other without gaps. The removal elements 560 are each by means of a positioning nose 562 rotatably on the axis of rotation 42 attached. The 8th shows one of the ablation elements 560 in the side view.

Every ablation element 560 has on its peripheral side by way of example a tear-off teeth 564, with which the pressed material to be removed 14 from the surface of the pressed material mat 22 can be torn. The tear-off 564 is wedge-shaped, with its tear-off side on the conveyor surface 18 facing side opposite to the production direction 20 is directed. The tears 564 the adjacent Abtragelemente 560 are axial to the axis of rotation 42 viewed offset to each other.

If necessary, a different number of Abtragelementen 560 on the axis of rotation 42 to be ordered. In this way, with respect to the axis of rotation 42 axial extent of the corresponding removal unit 40 be varied.

In the 9 and 10 each is a hold-down device 60 adjacent to the ablation element 40 in a first and second embodiment as a sliding plate 62 respectively as an endlessly circulating band 64 shown. In each figure, there is a side view on the left and a view opposite the direction of production on the right.

To 9 is therefore a sliding plate 62 left and right of the removal unit 40 arranged what the surface of the pressed material mat 22 fixed and to ensure a proper edge or ablation.

In 10 In an alternative, an endlessly circulating belt 94 is shown, which has deflection rollers 65 is guided and adjacent to the removal unit 40 is arranged.

In general, it should be said that the hold-down device is not mandatory, for example, the sliding plate 62 , the pressed material mat 22 must condense. It may even be provided that a distance between the surface of the pressed material mat 22 and the hold-down device 60 can be provided. Preferably, however, the pressed material mat is compressed more or less strongly, preferably to a degree at which the surface of the pressed material mat 22 no harm.

In the 11 and 12 is a plant 10 with a removal device 128 with removal units 140 shown according to a sixth embodiment. Those elements to those of the first embodiment the 1 to 3 are similar, are provided with the same reference numerals. The sixth embodiment differs from the first embodiment in that the axes of rotation 42 of the removal units 140 exemplary perpendicular to the conveyor surface 18 are aligned. The removal sections 146 are located on the conveyor surface 18 facing end sides of the respective Aberageinheiten 140 ,

The removal units 140 are similar to the removal units 40 from the first embodiment in two Abtrageinheitenanordnungen 38 spaced apart and arranged offset and in their distance from the conveyor surface 18 variable. With each removal unit 140 can the surface of the pressed material mat 22 along a corresponding processing path 47 to be edited.

LIST OF REFERENCE NUMBERS

10

investment

12

spreading head

14

pressed material

16

conveyor belt

18

conveying surface

20

production direction

22

press material mat

24

Device for realizing a given basis weight

26

Press arrangement

28; 128

the removal device

30

removal device

32

Pressed material (removed / removed)

34

control device

36

scattering device

38

Abtrageinheitsanordnung

40; 140

dismounting

42

axis of rotation

44

lifting unit

46; 146

abrading

47

machining path

48

Distance between removal units 40

50

Aspiration

52

Intake port Extractor 50

54

radiation source

58

sensor

560

excavating

562

positioning nose

564

Abreißzacke

60

Hold-down device

62

sliding

64

tape

65

deflection rollers

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2005046950 A1 [0002]
• EP 2653279 A1 [0003]
• DE 102008030417 A1 [0004]
• EP 2535158 B1 [0005]

Claims (14)

Device (24) for realizing a predetermined weight per unit area of a pressed material mat (22) scattered on a conveyor belt (16) in the course of producing press plates, in particular material plates made of wood and / or other renewable agricultural products, such as chip, fiber, straw and chipboard plates , and plastic plates, wherein the device (24) at least one removal device (28; 128) for removing pressed material (32), which at least one relative to a respective axis of rotation (42) rotatably driven removal unit (40; 140) with at least one removal section ( 46) which is arranged above a conveying side (18) of the conveyor belt (16) and with which the facing surface of the pressed material mat (22) can be processed along a production direction (20), characterized in that at least two adjacent removal units (40; 140) are arranged spaced from each other Device after Claim 1 , characterized in that at least two removal units (40; 140), viewed in the production direction (20), are arranged one behind the other. Device after Claim 1 or 2 , characterized in that at least two removal units (40; 140) viewed in the production direction (20) are arranged offset from one another. Device according to one of the preceding claims, characterized in that at least two removal units (40; 140) viewed in the production direction (20) spaced apart from each other are arranged side by side and at least one third removal unit (40; 140) in the production direction (20) behind the two first mentioned Abtragageheiten (40; 140) offset to these arranged so that it is at least partially in alignment with a gap between the two first Abtragageheiten (40; 140). Device according to one of the preceding claims, characterized in that at least one removal unit (40; 140) is variable with respect to its distance to the delivery side (18) of the conveyor belt (16). Device according to one of the preceding claims, characterized in that respective distances of at least two removal units (40; 140) to the delivery side (18) are separately variable. Device according to one of the preceding claims, characterized in that a lateral position of at least one removal section (46) of at least one removal unit (40; 140) is variable. Device according to one of the preceding claims, characterized in that at least one removal section (46) of at least one removal unit (40) is arranged circumferentially with respect to its axis of rotation (42) and / or at least one removal section (46) of at least one removal unit (140) with respect to its axis of rotation (42) is arranged axially frontally. Device according to one of the preceding claims, characterized in that at least one rotation axis (42) of at least one removal unit (40) is aligned parallel or obliquely to the delivery side (18) of the conveyor belt (16) and / or perpendicular or oblique to the production direction (20) and / or at least one axis of rotation (42) of at least one removal unit (140) is aligned perpendicular or oblique to the delivery side (18) of the conveyor belt (16) and / or perpendicular or oblique to the production direction (20). Device according to one of the preceding claims, characterized in that circular cylindrical removal units (40) are arranged with rounded or chamfered edges or the removal units (40) are cambered. Device according to one of the preceding claims, characterized in that as a removal unit (40) a plurality of disc-like Abtragelemente (560) on an axis (42), preferably spaced, are arranged, wherein each disc-like Abtragelement (560) has at least one Abreißzacke (564). Device according to one of the preceding claims, characterized in that adjacent to the removal unit (40), a hold-down device (60), preferably a sliding plate (62), an endlessly circulating belt (64) and / or a roller is arranged. Device after Claim 12 , characterized in that the hold-down device (60) in the production direction (20) on both sides and / or upstream and / or downstream of the Abttrageinheit (40) is arranged. Device after Claim 12 , characterized in that the hold-down device (60) has independent drive for height and / or side and / or peripheral speed.

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