DE102018110120A1 - Method and device for separating parts to be removed from continuously moving pressed material mats - Google Patents

Abstract

The invention relates to a method and a device (48) for separating parts (42) to be removed of a pressed material mat (20) from continuously moving pressed material mats (20) in the course of producing material plates with a continuously operating press (22). A pressed material mat (20) scattered on a forming belt (14) is conveyed by a transfer belt (16) in a production direction (12) to the press (22) and pressed in the press (22). In the method, a front strip nose (24) of the forming belt (14) viewed in the direction of production (12) is moved in or against the production direction (12) relative to an opposite part of the transfer belt (16) to form a discharge opening (40) for removal Releasing or closing parts (42) of a pressed material mat (20) between the forming belt (14) and the transfer belt (16). The forming belt (14) and the transfer belt (16) are synchronized with respect to their feed rates. A rear nose (38) of the transfer belt (16) viewed in the direction of production (12) is moved in or against the production direction (12) in coordination with the belt nose (24) of the forming belt (14).

Description

The invention relates to a method for separating parts to be removed from continuously moving pressed material mats in the course of a production of material plates with a continuously operating press, wherein a scattered on a forming belt pressed material mat is conveyed with a transfer belt in a production direction to the press and pressed in the press at the method, a forward tape nose of the forming belt as viewed in the direction of production is moved in or against the production direction relative to an opposite part of the transfer belt to release or close a discharge opening for parts to be removed of the pressed product mat between the forming belt and the transfer belt, wherein the forming belt and the transfer belt are synchronized with respect to their feed rates.

Furthermore, the invention relates to a device for separating parts to be removed from continuously moving pressed material mats in the course of production of material plates with a continuously operating press, with a forming belt can be spread on the pressed material for the realization of a pressed material mat and transported in a production direction, and a Transfer belt, with which the pressed material mat can be conveyed in the production direction from the forming belt to the press, wherein the forming belt in the production direction front has a front belt nose, which is movable in or against the production direction relative to an opposite part of the transfer belt to a discharge opening for parts of the pressed material mat to be removed between the forming belt and the transfer belt, respectively, to be released or closed accordingly.
From the DE 10 2008 011 445 A1 are a method and a separation device for separating continuously moving pressed material mats in the course of a production of material plates with a continuously operating press known. The pressed material mat passes through a separating device and a discharge area of a discharge bunker. During production, the discharge area or the discharge bunker is bridged by means of a band nose of the forming belt. If it is decided during production to open the discharge bunker, the separating device comes into action and performs a separating cut across the width of the pressed product mat by means of a separating knife. This separating cut creates a sloping discharge edge at the end of the pressed material mat. At the same time, the subsequent mat parts of the pressed material mat are properly dropped during a process of the strip nose in the discharge position on a baffle plate and / or directly into the discharge bunker. A travel speed of the band nose is preferably equal to or greater than the current feed of the forming belt.

The invention has for its object to design a method and apparatus of the type mentioned, in which can be reliably prevented even at high feed rates of the forming belt and the transfer belt that unwanted mat parts can get from the forming belt on the transfer belt.

This object is achieved in the process according to the invention in that a rear nose of the transfer belt considered in the production direction is moved in or against the production direction in coordination with the band nose of the forming belt.

According to the invention, therefore, the release and the closure of the discharge opening is controlled by appropriately coordinated movements of both the band nose of the forming belt and the band nose of the transfer belt. In this way, the discharge opening can be adapted more precisely to the movement of the parts to be removed from the pressed material mat on the forming belt. Thus, the discharge opening can be opened faster and more targeted, to prevent the parts to be removed of the pressed material mat get to the transfer belt. Parts of the pressed material mat which are correspondingly far flung from the forming belt can thus not bounce against a deflection region, in particular a drive drum, of the transfer belt and be thrown upwards onto the transfer belt. Mats throws of parts to be removed on the Pressgutmatte can also be prevented.

Such mats may result in damage to the steel belts of the continuous press, errors in the later plate of material, or, if detected with double mat monitoring, production stoppage.

By means of the inventive combination of a movable band nose of the forming belt with a movable band nose of the transfer belt and higher feed rates of the forming belt and the transfer belt can be realized without this leading to the above disturbances. Thus, feed speeds greater than 1000 mm / s, preferably over 1700 mm / s, can be realized without the parts of the pressed product mat to be removed can reach the press material mat on the side of the transfer belt. With the invention, the release of the discharge opening can be coordinated so even at higher feed rates, that a more accurate and precise separation of the parts to be removed from the pressed material mat of the pressed material mat is possible. In this case, a rear end of the mat in the direction of production, in particular a trailing edge, of the pressed material mat can be placed properly on the transfer belt.

By means of the invention, it is also possible to realize speed-dependent offsets which enable a controlled rejection of parts of the pressed material mat to be removed by early release of the discharge opening. Thus, the release and / or the closing of the discharge opening can also be adapted to mechanical properties of the pressed material mat, in particular fiber length, compression or the like.

Advantageously, with appropriate algorithms, the movements of the band nose of the forming belt and the belt nose of the transfer belt can be coordinated accordingly in order to achieve a satisfactory result.

With the invention, accelerations of the band nose of the forming belt and / or transfer belt during release and / or closing the discharge opening can be achieved. In this way, the band nose of the forming belt and / or transfer belt can be accelerated on correspondingly short acceleration paths to the feed rate of the forming belt and the transfer belt and beyond.

Advantageously, the discharge opening can have a maximum clear width of more than 1 m, in particular more than 1.5 m, in the production direction. By such a large discharge opening also correspondingly far thrown to be removed parts of the pressed material mat of the mold belt unhindered by gravity falling down.

Advantageously, a so-called discharge bunker can be arranged below the discharge opening. In the discharge bunker, the separated, to be removed parts of the pressed material mat collected and the pressed material may be returned for reuse.

With the continuous press material plates, in particular of wood and / or other renewable agricultural products such as chip, fiber, straw and Schnitzelplatten, and plastic plates can be produced.

In an advantageous embodiment of the method for releasing the discharge opening from a closed basic position, the band nose of the forming belt and the band nose of the transfer belt are first moved at the same speed in the production direction and upon the occurrence of a predetermined opening condition, the movement of the band nose of the forming belt relative to the belt nose of the Transfer bandes are at least slowed down. In this way, the movement of the band nose of the forming belt and the band nose of the transfer belt can first be synchronized with the feed rate of the forming belt and the transfer belt. Thus, the area between the band nose of the forming belt and the band nose of the transfer belt, in which the subsequent discharge opening is realized, below a separation region of the pressed material mat, in which the press material mat to be fed to the press is or is to be separated from the following part to be removed, arranged and be moved parallel to the separation area in the production direction. The discharge opening can be placed in this way more precisely below the separation area of the pressed material mat.

When the opening condition occurs, the movement of the band nose of the forming belt relative to the band nose of the transfer belt can at least be slowed down. In this way, the band nose of the forming belt can be relatively removed from the band nose of the transfer belt and so the discharge opening can be increased.

Advantageously, the discharge opening can be closed in the closed basic position. In the closed basic position, the band nose of the forming belt and the band nose of the transfer belt can be placed in the smallest possible distance from one another in the direction of production in front of the release opening to be released. At the smallest possible distance, the band nose of the forming belt and the band nose of the transfer belt just do not touch.

In a further advantageous embodiment of the method, the movement of the band nose of the forming belt can be reversed when the opening condition occurs. In this way, the release of the discharge opening can be accelerated. Furthermore, the parts of the pressed material mat which are to be removed, which are located on the forming belt, can thus fall down early through an already opened section of the discharge opening.

In a further advantageous embodiment of the method, the movement of the band nose of the transfer belt can be continued when the opening condition occurs. In this way, the speed of the band nose of the transfer belt can be synchronized with the feed rate of the transfer belt. Thus, the discharge opening can be opened further, whereby the proper storage of a trailing edge of the pressed product mat is ensured on the transfer belt.

In a further advantageous embodiment of the method, first, the speeds of the band nose of the forming belt and the band nose transfer belt with the Feed rate of the forming belt and the transfer belt are synchronized. In this way, the separation region of the pressed product mat can be arranged more precisely above the region between the band nose of the forming belt and the band nose of the transfer belt.

In a further advantageous embodiment of the method, after the opening condition has occurred, the band nose of the forming belt and the band nose of the transfer belt can each be moved into a release basic position, in which the discharge opening is completely released. In the release-basic position, the band lugs of the forming belt and the transfer belt band nose can have their operationally largest distance, so that the discharge opening has its maximum clear width.

In a further advantageous embodiment of the method can be specified as the opening condition that a separation region of a pressed material mat is located above a region between the band nose of the forming belt and the band nose of the transfer belt. The parts of the Pressgutmatte, which are viewed in the direction of production behind this separation area can be discarded in this way as to be removed parts of the pressed material mat.

Advantageously, by means of a corresponding control and synchronization of the movement of the strip nose of the forming belt, the belt nose transfer belt, the forming belt and the transfer belt, the separation region of the pressed goods mat can be placed more precisely above the region between the belt nose of the forming belt and the belt nose of the transfer belt.

In a further advantageous embodiment of the method can be moved to close the discharge opening, starting from a release basic position in which the discharge opening is completely released, first the band nose of the forming belt in the production direction, upon reaching the band nose of the transfer belt, the movement of the band nose of the forming belt be and the tape tabs of the forming belt and the transfer belt are moved at the same speed counter to the direction of production in the closed basic position.

A lying on the mold belt part of the pressed material mat, which should not be discarded, can first be moved with the band nose of the forming belt. The closing of the discharge opening can be done exclusively by movement of the band nose of the forming belt. As soon as the band nose of the forming belt reaches the band nose of the transfer belt, the discharge opening is completely closed. The conveying path between the forming belt and the transfer belt is bridged in this way. The Pressgutmatte can be passed from the forming belt to the transfer belt and transported with this to the press. The band nose of the forming belt and the transfer belt can now be moved against the production direction back into the closed basic position, without causing the discharge opening is released.

In the closed basic position, the band nose of the forming belt and the band nose of the transfer belt are ready for a further release of the discharge opening. A further release of the discharge opening may be necessary, in particular after cutting, in particular cutting, of the pressed material mat in a separating region in order to separate out a part of the pressed material mat which follows the separating region and which is to be removed.

Advantageously, the pressed material mat can be separated in the opening basic position in a separation area. The part of the pressed material mat to be removed can be separated out in the production direction from the separation area through the discharge opening. When the separation area reaches the band nose of the forming belt, the discharge opening can be closed and the device can be brought into its closed basic position. As soon as the feed of the pressed material mat to the press is to be interrupted or stopped, it can be separated in front of the strip nose of the forming strip in a separating area. When this separation area reaches the band nose of the transfer belt, the discharge opening can be released, so that the subsequent part of the pressed material mat to be removed can be discarded.
In a further advantageous embodiment of the method, the band nose of the forming belt can first be accelerated to a speed which is greater than the feed rate of the forming belt, and decelerated before reaching the band nose of the transfer belt. In this way it can be prevented that the pressed material mat supplied on the forming belt can fall beyond the band nose of the forming belt into the still partly to be released discharge opening. Before reaching the band nose of the transfer belt, the band nose of the forming belt can be braked so that the pressed material can pass undamaged from the forming belt on the transfer belt. In this case, a distance is maintained, so that the band nose of the forming belt does not strike against the band nose of the transfer belt.

In a further advantageous embodiment of the method, the pressed material mat can be separated in a separation area before the separation area reaches the band nose of the forming belt or, with the discharge opening closed, the belt nose of the Reached transfer belt. In this way, the separation of the parts to be removed of the pressed material mat and weiterzuverarbeitenden Pressgutmatte in the separation area in a region between the belt projections of the forming belt and the transfer belt. This ensures that the weiterzuverarbeitende part of the pressed material mat has a properly straight leading edge and trailing edge and can be properly transported to the press with the transfer belt. The part of the pressed material mat to be removed can be reliably separated by the discharge opening.

In a further advantageous embodiment of the method, the band nose of the forming belt can be arranged in the closed basic position and the release basic position in the same position. In this way, the band nose of the forming belt is ready for a later closing operation of the discharge opening.

The release and the closing of the discharge opening can be done in this way easier cyclic.

Furthermore, the object is achieved in the device according to the invention that the transfer belt in the back direction of production has a band nose, which is movable in coordination with the band nose of the forming belt in or against the production direction. In this way, the release and the closing of the discharge opening can be carried out targeted by appropriately tuned moving the tape tabs of the forming belt and the transfer belt. Overall, it can be ensured that even at higher feed rates of the forming belt and the transfer belt no parts to be removed from the pressed material mat on the transfer belt to be conveyed to the press material mat and thus can lead to disturbances and / or quality reductions in the finished material plate.

In an advantageous embodiment, the device may comprise at least one synchronization device with which the speeds of the forming belt, the transfer belt, the belt nose of the forming belt and / or the belt nose of the transfer belt can be controlled. In this way, a transport of the press material mat to be conveyed to the press and a removal of parts of the press material mat to be removed can also be realized, preferably improved, at a higher feed speed. Advantageously, the corresponding speeds can be synchronized with one another with the synchronization device.

In a further advantageous embodiment, the device may have at least one separating device, with which the pressed material mat can be separated. In this way, trailing edges and / or leading edges in the pressable mat to be processed can be realized in a more targeted and accurate manner. The at least one separating device can have a cutting device, punching device or the like.

Incidentally, the features and advantages shown in connection with the method according to the invention and the device 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.

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.

• 1 einen Ausschnitt einer Anlage zur Herstellung von Werkstoffplatten in der Seitenansicht im Bereich einer Vorrichtung zum Aussondern von zu entfernenden Teilen einer Pressgutmatte von kontinuierlich bewegten Pressgutmatten;
• 2 bis 9 unterschiedliche Phasen beim Schließen einer Abwurföffnung der Vorrichtung zum Aussondern von zu entfernenden Teilen der Pressgutmatte aus der 1;
• 10 bis 16 unterschiedliche Phasen bei der Freigabe der Abwurföffnung der Vorrichtung zum Aussondern von zu entfernenden Teilen der Pressgutmatte aus der 1.

It show schematically

• 1 a section of a plant for the production of material plates in the side view in the range of a device for separating out to be removed parts of a pressed material mat of continuously moving pressed material mats;
• 2 to 9 different phases when closing a discharge opening of the device for separating out to be removed parts of the pressed material mat from the 1 ;
• 10 to 16 different phases in the release of the discharge opening of the device for separating out to be removed parts of the pressed material mat from the 1 ,

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

In the 1 is a section of a plant 10 for the production of material plates, such as wood and / or other renewable agricultural products such as chip, fiber, straw, and Schnitzelplatten, and plastic plates shown.

The attachment 10 includes in a production direction 12 looks at one after another a form band 14 , a transfer band 16 and a steel band 18 , with which a pressed material mat 20 continuously through the plant 10 is transported. The form band 14 , the Transfer belt 16 and the steel band 18 are each configured as an endless belt.

With a spreading device, not shown, the spreading material is distributed from above over a defined width on an upper run of the forming belt 14 scattered and brought into shape. The pressed material mat 20 is with the form band 14 to the transfer band 16 promoted. On an upper strand of the transfer belt 16 becomes the pressed material mat 20 to an upper strand of the steel strip 18 to hand over.

The steel band 18 is part of a continuous press 22 , with the here in not further interesting way the Pressgutmatte 20 pressed in the pass, cured and output as a material plate.

The form band 14 makes on it with respect to the production direction 12 front, the transfer belt 16 facing side a front strap nose 24 , This is the form band 14 there for a role 26 diverted. The role 26 has an example of a diameter of 25 mm. Thus, a correspondingly small deflection radius in the region of the band nose 24 of the form band 14 will be realized.

The role 26 and with her the ribbon nose 24 of the form band 14 are in and against the direction of production 12 displaceable, so movable by moving. To the length of the form band 14 when moving the strap nose 24 compensate, is the form band 14 by a deflection device 28 guided. The deflection device 28 includes a balancing role 30 placed on the outside of the molding tape 14 attacks and for length compensation of the forming belt 14 when moving the tape nose 24 is also displaceable. Using the diverter 28 can the band nose 24 at different speeds in and against the direction of production 12 be moved without a forward speed of the upper run of the forming belt 14 is influenced by it.

In the 1 on the left are the band nose 24 of the form band 14 and the corresponding deflecting device 28 in a closed basic position II shown. On the right are the band nose with dashed lines 24 and the deflector 28 in one direction of production 12 indicated opposite end position.

The upper strand of the transfer belt 16 is one in production direction 12 looks at the rear roller 32 and a front role 34 of the transfer belt 16 diverted. The rear roller 32 has an example of a diameter of 25 mm. The bottom strand of the transfer belt 16 is additionally via a drive drum 36 deflected, which is located below the upper run. The drive drum 36 has an example of a diameter of 260 mm. The rear roller 32 forms with the deflected there transfer band 16 a rear strap nose 38 , The rear strap nose 38 of the transfer belt 16 is on the form band 14 facing side. The rear strap nose 38 is by means of the rear roller 32 of the transfer belt 16 in and against the direction of production 12 displaceable, so movable by moving. To compensate for the length of the transfer belt 16 with a displacement of the rear strap nose 38 is an example of the drive drum 36 also movable. A length compensation of the transfer belt 16 when moving the strap nose 38 can also in a different way, for example as in the Formband 14 , respectively.

As with the strap nose 24 of the form band 14 is in 1 the position of the band nose 38 of the transfer belt 16 represented in an end position with dashed lines.

The front role 34 is not displaceable in this embodiment, so that there formed front band nose of the transfer belt 16 on the steel band 18 facing side remains spatially fixed.

The rear strap nose 38 of the transfer belt 16 can in coordination with the front strap nose 24 of the form band 14 moved, respectively, postponed. In this way, a discharge opening 40 released, as for example in the 2 is shown or closed, as for example in the 10 is shown.

Through the discharge opening 40 can be removed parts 42 the pressed material mat 20 which is not on the transfer band 16 should be removed, are discarded down from the conveyor. Below the discharge opening 40 there is a disposal bunker 44 with which the parts to be removed 42 the pressed material mat 20 collected and, where appropriate, collected for recycling. The discharge opening 40 has in production direction 12 considers a maximum clear width of, for example, 1.5 m.

The front band nose 24 of the form band 14 , the rear strap nose 38 , the discharge opening 40 and the dump bunker 44 belong to a device 48 for sorting out parts to be removed 42 the pressed material mat 20 , The device 48 further comprises a synchronization device 49 with which the speeds of the forming belt 14 , the transfer band 16 , the band nose 24 and the band nose 38 of the transfer belt 16 can be controlled and synchronized.

Above the form band 14 is located in the direction of production 12 considered behind the front strap nose 24 a separator 46 for cutting the pressed material mat 20 on the form band 14 , With the separator 46 can in here not further interesting way the Pressgutmatte 20 across its entire width along a separation area 50 get cut. In this way arise in the separation area 50 two separate parts of the pressed material mat 20 , Together with the separator 46 forms the device 48 a separating device for separating the continuously moving pressed material mats 20 ,

One of the cut parts of the pressed material mat 20 , which in the following, for the sake of clarity, continues to be used as pressed material mat 20 is designated, the transfer belt 16 pass and with this the steel band 18 the continuously working press 22 fed. The other part of the pressed material mat 20 is using the device 48 as a part to be removed 42 the pressed material mat 20 separated from the conveyor and the dump bunker 44 fed.

At the separator 46 it can be an example of a dowel cutting saw, which diagonal to the production direction 12 from one side edge to the other side edge of the forming belt 14 with the form band 14 is guided with and so the Pressgutmatte 20 overall with a straight cut across the entire width perpendicular to the production direction 12 separates. A cutting edge of the in production direction 12 rear part of the pressed material mat 20 is hereafter referred to as leading edge 52 the rear part of the pressed material mat 20 designated. A cutting edge of the front part of the pressed material mat 20 is called the trailing edge 54 the front part of the pressed material mat 20 designated. Depending on the production phase of the plant 10 becomes the front part of the pressed material mat 20 or the rear part of the pressed material mat 20 as Pressgutmatte 20 the press 22 supplied and the other part of the pressed material mat 20 as a part to be removed 42 the pressed material mat 20 discarded.

The following is the operation of the system 10 for the production of material plates exemplified:

When starting up the system 10 are the front band nose 24 of the form band 14 and the rear strap nose 38 of the transfer belt 16 in a release home position I in the 2 is shown. In the release home position I have the front band nose 24 and the rear strap nose 38 in production direction 12 considers the greatest possible distance from each other. The discharge opening 40 is fully released, so about with the form band 14 conveyed pressed material, respectively parts to be removed 42 the pressed material mat 20 , completely through the discharge opening 40 fall and into the dump bunker 44 can get.

When starting up the system 10 be first the form band 14 , the transfer band 16 and the steel band 18 started. The feed rates of the forming belt 14 , the transfer band 16 and the steel band 18 are identical and constant. The feed rate of the forming belt 14 , the transfer band 16 and the steel band 18 is exemplary 1700 mm / s.

With the spreading device, not shown, pressed material is pressed onto the forming belt 14 scattered, distributed and, in a pre-press, not shown, pre-pressed into a mat. As long as the discharge opening 40 is released, the pressed material passes as parts to be removed 42 the pressed material mat 20 in the dump bunker 44 ,

With the separator 46 is in a separation area 50 the pressed material mat 20 over the entire width perpendicular to the production direction 12 separated. This separation area 50 is exemplary in the 2 shown. The generation of the separation of the pressed material mat 20 occurs before reaching the band nose 24 of the form band 14 , Through the cut receives a mat part behind the separation area 50 , the first pressed material mat 20 forms, a straight leading edge 52 , The part to be removed 42 the pressed material mat 20 in front of the separation area 50 is using the device 48 separated from the conveyor.

The pressed material mat 20 should use the form band 14 and the transfer band 16 the steel band 18 the press 22 be supplied. For this purpose, the discharge opening 40 be closed early.

Coordinated with the feed rate of the forming belt 14 becomes the band nose 24 initially in the direction of production 12 on the band nose 38 of the transfer belt 16 too moved. At the same time, the speed of the tape nose becomes 24 so with the feed rate of the forming belt 14 synchronized that the separation area 50 , respectively the leading edge 52 the pressed material mat 20 , to the front end of the strap nose 24 comes, as in the 3 and 4 is shown. In this way, the part to be removed 42 the pressed material mat 20 in front of the separation area 50 completely through the discharge opening 40 fall.

Once the separation area 50 , respectively the leading edge 52 , the front end of the strap nose 24 of the form band 14 achieved, as in the 4 is shown, the band nose 24 accelerated to a speed which is greater than the feed rate of the forming belt 14 , The leading edge 52 falls as it were behind the band nose 24 of the form band 14 back, like in the 5 and 6 shown. This prevents parts of the pressed material mat 20 through the discharge opening 40 be dropped and so the proper shape of the leading edge 52 gets destroyed.

The band nose 24 of the form band 14 will be before reaching the tape nose 38 of the transfer belt 16 delayed, like this in the 6 is shown. The band nose 24 so far in front of the band nose 38 stopped that band nose 24 of the form band 14 and the band nose 38 of the transfer belt 16 just do not touch. This is in the 7 shown. The discharge opening 40 is closed in this position.

The pressed material mat 20 will, as in the 7 shown to the transfer belt 16 to hand over. The pressed material mat 20 is continuous with the transfer belt 16 to the steel band 18 led and there in the press 22 pressed and cured according to a material plate.

Subsequently, the front band nose 24 of the form band 14 and the rear strap nose 38 of the surrender volume 16 synchronously against the production direction 12 in the closed basic position II driven, as in the 8th and 9 shown. The closing basic position II is in the 10 shown. During the entire reversing process in the closed basic position II remains the discharge opening 40 closed so that the pressed material mat 20 while unhindered by the forming belt 14 to the transfer band 16 is transferred. The position of the band nose 24 in the closed basic position II agrees with her position in the release basic position I match.

The following is the cutting of the trailing edge 54 the pressed material mat 20 and removing the subsequent parts to be removed 42 the pressed material mat 20 based on 10 to 16 described:

Once the feed of the pressed material mat 20 to the continuously working press 22 interrupted, or should be terminated, with the separator 46 the pressed material mat 20 over its entire width along the separation area 50 cut. It is at the in production direction 12 considered the rear end of the pressed material mat 20 the trailing edge 54 generated, for example, in the 10 is shown.

Once the separation area 50 the band nose 24 be achieved, as in the 11 and 12 shown, the band nose 24 of the form band 14 and the band nose 38 of the transfer belt 16 in production direction 12 initially synchronous to the feed rate of the forming belt 14 and the transfer band 16 accelerated. The acceleration of the front strap nose 24 and the rear band nose 38 is for example greater than 4 m / s ² .

As soon as the separation area 50 , like in the 12 shown above a region between the strap nose 24 of the form band 14 and the band nose 38 of the transfer belt 16 located and the trailing edge 54 on the transfer belt 16 over the band nose 38 is located, the release of the discharge opening 40 initiated. The speed of the band nose 38 is at the feed rate of the transfer belt 16 synchronized, as in the 13 and 14 shown so that the trailing edge 54 initially above the band nose 38 located. At the same time the band nose 24 of the form band 14 , like in the 13 shown, slowed down, stopped and finally, as in the 14 to 16 shown, contrary to the direction of production 12 back to the release home position I hazards.

The clear width of the discharge opening 40 in production direction 12 increases rapidly, so the subsequent part to be removed 42 the pressed material mat 20 due to gravity in the dump bunker 44 falls without the transfer belt 16 to reach.

The speed of the band nose 38 of the transfer belt 16 is before reaching the release home position I so that reduces the band nose 38 slower than the feed speed of the transfer belt 16 , The pressed material mat 20 becomes so from the tape nose 38 away towards the press 22 moves, with the trailing edge 54 from the rear band nose 38 of the transfer belt 16 away. This is in the 15 and 16 shown.

Finally, there are the band nose 24 of the form band 14 and the band nose 38 of the transfer belt 16 in the release home position I , The device 48 for sorting out parts to be removed 42 the pressed material mat 20 is now ready to production direction, in the separation area 50 a leading edge 52 and a trailing edge 54 to realize.

Cutting the pressed material mat 20 , closing and releasing the discharge opening 40 is synchronized and cyclic as described above.

LIST OF REFERENCE NUMBERS

10

investment

12

production direction

14

forming belt

16

Transfer belt

18

steel strip

20

press material mat

22

Press

24

belt catch

26

role

28

deflecting

30

compensating roller

32

Roll (rear)

34

Roll (front)

36

driving drum

38

belt catch

40

deposit slot

42

parts to be removed

44

dropping bunker

46

separator

48

contraption

49

synchronizer

50

separating region

52

leading edge

54

trailing edge

I

Sharing basic position

II

Closure base position

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

• DE 102008011445 A1 [0002]

Claims (14)

Method for separating parts (42) to be removed from continuously moving press material mats (20) in the course of producing material plates with a continuously operating press (22), wherein a press material mat (20) scattered on a forming strip (14) comprises a transfer belt (16) in a production direction (12) is conveyed to the press (22) and pressed in the press (22), in the method a in the production direction (12) viewed front strap nose (24) of the forming belt (14) in or against the production direction (12) relative to an opposite part of the transfer belt (16) is moved to respectively release a discharge opening (40) for parts to be removed (42) of the pressed material mat (20) between the forming belt (14) and the transfer belt (16) the forming belt (14) and the transfer belt (16) are synchronized with respect to their feed speeds, characterized in that a rearward belt viewed in the production direction (12) dnase (38) of the transfer belt (16) in coordination with the belt nose (24) of the forming belt (14) in or against the production direction (12) is moved. Method according to Claim 1 , characterized in that to release the discharge opening (40) starting from a closed basic position (II), the band nose (24) of the forming belt (14) and the band nose (38) of the transfer belt (16) initially at the same speed in the production direction (12 ) are moved and upon the occurrence of a predetermined opening condition, the movement of the band nose (24) of the forming belt (14) relative to the band nose (38) of the transfer belt (16) is at least slowed down. Method according to Claim 2 , characterized in that upon the occurrence of the opening condition, the movement of the band nose (24) of the forming belt (14) is reversed. Method according to Claim 2 or 3 , characterized in that upon the occurrence of the opening condition, the movement of the band nose (38) of the transfer belt (16) is continued. Method according to one of Claims 2 to 4 , characterized in that first the speeds of the band nose (24) of the forming belt (14) and the band nose (38) of the transfer belt (16) with the feed rate of the forming belt (14) and the transfer belt (16) are synchronized. Method according to one of Claims 2 to 5 , characterized in that after the occurrence of the opening condition, the band nose (24) of the forming belt (14) and the band nose (38) of the transfer belt (16) are each moved to a release home position (I) in which the discharge opening (40) completely is released. Method according to one of Claims 2 to 6 , characterized in that as the opening condition is specified that a separation region (50) of a pressed material mat (20) is located above a region between the band nose (24) of the forming belt (14) and the band nose (38) of the transfer belt (16). Method according to one of the preceding claims, characterized in that for closing the discharge opening (40) starting from a release basic position (I), in which the discharge opening (40) is completely released, first the band nose (24) of the forming belt (14) is moved in the direction of production (12), upon reaching the band nose (38) of the transfer belt (16) the movement of the band nose (24) of the forming belt (14) is reversed and the band nose (24) of the forming belt (14) and the belt nose (38 ) of the transfer belt (16) are moved at the same speed counter to the direction of production (12) into the closed basic position (11). Method according to Claim 8 , characterized in that the band nose (24) is first accelerated to a speed which is greater than the feed rate of the forming belt (14), and is decelerated before reaching the band nose (38) of the transfer belt (16). Method according to one of the preceding claims, characterized in that the pressed material mat (20) is separated in a separating region (50) before the separating region (50) reaches the band nose (24) of the forming belt (14) or when the discharge opening (40) is closed Band nose (38) of the transfer belt (16) reached. Method according to one of the preceding claims, characterized in that the band nose (24) of the forming belt (14) in a closed basic position (II) and a release basic position (I) is arranged in the same position. Device (48) for separating out parts (42) to be removed from continuously moving pressed material mats (20) in the course of producing material plates with a continuously operating press (22), in particular for carrying out the method according to one of the preceding claims, with a forming belt ( 14), onto which pressed material for the realization of a pressed material mat (20) can be scattered and conveyed in a production direction (12), and a transfer belt (16), with which the pressed material mat (20) in the production direction (12) of the forming belt (14) can be conveyed to the press (22), wherein the forming belt (14) viewed in the production direction (12) front a front belt nose (24), in or against the production direction (12) relative to an opposite part the transfer belt (16) is movable to release a discharge opening (40) for parts to be removed (42) of the pressed material mat (20) between the forming belt (14) and the transfer belt (16) accordingly, characterized in that the transfer belt (16) in the production direction (12) has a rear band nose (38), which in coordination with the band nose (24) of the forming belt (14) in or against the production direction (12) is movable. Device (48) according to Claim 12 , characterized in that the device (48) at least one synchronization device (49), with which the speeds of the forming belt (14), the transfer belt (16), the belt nose (24) of the forming belt (14) and / or the belt nose ( 38) of the transfer belt (16) can be controlled. Device (48) according to Claim 12 or 13 , characterized in that the device (48) has at least one separating device (46) with which the pressed material mat (20) can be separated.

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