DE202006019684U1 - Dough processing machine for shaping and treatment of dough strands and crescents comprises supply conveyer belt for the introduction of dough pieces into the treatment process, and winding machine for coiling the dough pieces - Google Patents

Abstract

The dough processing machine for the shaping and treatment of dough strands and crescents, comprises a supply conveyer belt (3) for the introduction of dough pieces (4) into the treatment process, a winding machine (9) at the output of the supply conveyor for coiling the dough pieces, a first conveyor (14) with a relaxation range (15) and a second conveyor (20). The supply conveyer belt, winding machine and the conveyor are arranged in a machine rack. The supply conveyor and the winding machine are arranged above both the conveyors. The dough processing machine for the shaping and treatment of dough strands and crescents, comprises a supply conveyer belt (3) for the introduction of dough pieces (4) into the treatment process, a winding machine (9) at the output of the supply conveyor for coiling the dough pieces, a first conveyor (14) with a relaxation range (15) and a second conveyor (20). The supply conveyer belt, winding machine and the conveyor are arranged in a machine rack. The supply conveyor and the winding machine are arranged above both the conveyors. The second conveyor transfers dough pieces both with its upper- and lower band area. A third conveyor is arranged between the first and second conveyor, exhibits a relaxation zone at its upper side, and transfers the dough pieces to the second conveyor. The transfer of the dough pieces through the supply conveyor and the winding machine takes place in different transportation direction on the conveyors. A relaxation zone for dough pieces conveyed on the third conveyor, is arranged between the first and the third conveyor. End-sided returning members are arranged for the conveyance of the dough pieces from the upper to the lower surface of the conveyors. The first and second conveyors exhibit same length and the third conveyor exhibits a smaller length. The common length of extension of the supply conveyor and winding machine corresponds to the respective extension length of the first and/or second conveyor band. The supply- and the conveyor run horizontally one above the other. The conveyance length on the third conveyor is shorter than or same as the conveyance length on the first conveyor. The conveyance lengths on the upper section of the third conveyor and on the second conveyor are identical, and are shorter than the conveyance length on the lower section of the second conveyor. A working plate is motor adjustable under the second conveyor. The winding machine exhibits two winding bands counter-rotating at different speeds. The winding bands form a winding gap between them. The supply conveyor, the winding machine and the conveyors form machine units. The machine units are separately removable from the machine rack. The upper-lying first machine unit, formed from the winding machine and supply conveyor are mountable on underlying machine units of conveyors. The lower-most machine unit comprising the second conveyor, serves as a support for the machine units arranged above it. The lowest machine unit is arranged on a rollable machine rack. The machine unit arranged between the first and the second conveyor, covers the third conveyor and the working plate. The third conveyor is switchable between a halt position and/or counter-operation state and thus assumes the function of a working plate. The third conveyor is motor adjustable in its distance (D) to the first conveyor. By the adjustment, the angle between the level of extension of the lower sections of the first conveyor and the third conveyor is changeable. The third conveyor transports dough pieces with its upper band range in the first transportation direction and with its lower band range in an opposite direction, and the working plate is arranged between the third and the second conveyor.

Description

The The invention relates to a dough processing machine, molded with the dough pieces and can be edited. In particular, a dough processing machine is addressed with which dough pieces in dough strands and croissants can be shaped. Such machines are also called croissant winding and stranding machines designated.

A known machine of the type described above (croissant winding and stranding machine BSK 650) has on a machine frame a feed conveyor, with which dough pieces be introduced into the editing process can. On the output side of the feed conveyor is a winding machine for performing a winding process arranged on the dough pieces. On the output side is at the winding machine a first conveyor belt provided, due to an adjustable Vordrückplatte forms both an active and a relaxation area. among them is a second conveyor belt provided with a further effective range.

The previously described dough processing machine is relatively space consuming, because the feed conveyor, the winder and the subsequent conveyor belts in the longitudinal direction one behind the other are arranged. About that needed out the known dough processing machine three provided after the winder output Conveyor belts, um the pieces of dough through the different processes.

As a further prior art is the DE 43 07 938 C1 known, which works essentially on the same principle. There, too, three separate conveyor belts are needed to perform the Wirk- and relaxation phases on the dough pieces.

Of the Invention is based on the object, a dough processing machine with the features of the preamble of claim 1 such to educate them relatively long Einwirk- and resting stretches on the dough pieces in a compact Construction and reduced machinery costs possible. It's up to you to continue the invention to design the machine such that a plurality be made possible at low adjustment or retooling applications.

These The object is solved by the features of claim 1. advantageous Further developments of the invention will become apparent from the dependent claims 2-24.

To the first characterizing feature is a third between the first and second conveyor belt arranged conveyor belt be provided, the at least on its upper side (upper strand) a Has relaxation zone and the dough piece to the second conveyor belt promoted. This is the overall length considerably shortened the dough processing machine. Then the first should and the subsequent third conveyor the dough piece on the respective upper strand of the first and the third conveyor belt transport at least in phases without the action of an active plate. After deflection of the dough piece from the top of the third conveyor belt on the second conveyor belt Now takes place at least on this one Einwirkphase, this exposure phase are relaxation phases on the first and the third conveyor belt preceded.

The second conveyor belt, i.e. The conveyor belt, the output side follows the third conveyor belt, should be designed so that it the dough pieces both on its upper band area, so on the Obertrum, as well as with its opposite lower band range, i.e. with the lower strand, promotes.

The Dough processing machine has superposed, essentially parallel conveyor paths. In that both the first, as well as the third conveyor belt Relaxation zones for holding up the dough piece, The machine can be realized with much smaller longitudinal dimensions.

This is particularly meaningful because in bakeries often small space requirement is present.

In Advantageously located between the first and the third conveyor belt a relaxation zone for which carried on the third conveyor belt Dough. This relaxation zone can be both in one piece over the entire length of the third conveyor belt extend as well as in the form of several relaxation zones the third conveyor belt, which are interrupted by effective ranges, be configured.

Furthermore allows the knitting device on the undersides of the second conveyor belt completely considerable impact possibilities on the dough pieces, so that the Operator of the dough processing machine very targeted to the Dough pieces and their shape can act.

The End-side deflection means, which are arranged on the two conveyor belts, can be different Be nature. Conceivable here are the contour of the guide rollers of the conveyor belts adapted baffles. But it is also conceivable, baffles or the like. Provide, by changed the ejection direction of the dough pieces at the end of the tape and is diverted.

The first and second conveyor belt have about the same length on. The length the two conveyor belts are right approximately with the sum of the extension lengths of the feeder and the croissant wrapping machine.

The arranged third between the first and second conveyor belt conveyor belt has a shorter length than the other conveyor belts on. The maximum longitudinal dimension The machine is characterized by the maximum length of the first, second conveyor belt and / or common extension length of feed conveyor and winding machine certainly.

The feed conveyor belt as well as the first, second and third conveyor belts are substantially horizontal and are on top of each other arranged.

A further advantageous measure is it the effective conveying length on the third conveyor belt (on the upper run) shorter or equal to the effective conveying length the first conveyor belt (on the upper strand) interpreted. This ensures that the maximum Length of Machine not by the length of the third conveyor belt affected becomes.

As well it is appropriate, the effective conveyor length on the upper strand of the third conveyor belt shorter as the effective conveying length the lower strand of the second conveyor belt interpreted. Because the maximum length the machine is not of length of the third conveyor belt affected shall be.

The Final molding plate under the second conveyor belt can be adjusted by motor. Via a dough length sensor, the input side and end is attached to the active plate, is it possible that Length of to detect rolled dough pieces and in case of deviation from a Nominal length over the motorized adjustment of the final active plate a correction or a rejection detection make.

To For cleaning and service purposes, it is advantageous if the feed conveyor and the winding machine a separate from the machine frame removable first machine unit and the first, second and third conveyor belt form further machine units which can be separated from the machine frame, which are preferably locked together.

The Machine units sandwich each other. It is but also possible to fold out the individual machine units from a machine frame or to pull out a machine frame.

Finally, the individual machine units modular as in a modular principle be composed and, where appropriate, with additional Actual plates are extended. This allows a very versatile Application of the embodiment according to the invention, optimized on the type of dough - whether Pretzel, baguette, croissants - and adapted to the existing space.

The entire arrangement allows Therefore, to build a modular system in which a relatively long relaxation zone on two superimposed distributed conveyor belts distributed and at the same time by the dual function of at least the second lowest conveyor belt (Function 1: effective range on the upper run, function 2: effective range under the lower run) the length dimension the overall machine is reduced. Reproducible dough or strand length results are guaranteed.

A further advantageous measure it is that between the first and the second conveyor belt arranged machine unit either with a third conveyor belt or with a third conveyor belt and form an active plate. This will allow depending on the requirement with the installation of the machine unit either a long broken conveyor belt, which acts as a relaxation zone, to install or to install a machine unit, through the third conveyor belt a shorter one Defined relaxation zone and with the additional active plate on the Dough pieces acts, the dough pieces by means of the lower run of the first conveyor belt over the Actual plate of the machine unit to be transported. Furthermore can the third conveyor belt be provided with a standstill function, in which the conveyor belt not moved and the dough pieces by means of the lower run of the first conveyor belt over the stationary third conveyor belt to be moved, wherein the third conveyor belt in the manner of an active plate acting on the dough pieces.

Further it is advantageous to use the third conveyor belt adjustable at least in its distance from the first conveyor belt, for example form with the help of an electric motor drive. This can, for example the function of the third conveyor belt as active plate according to the preceding Section supported become. It measured the Adjustment of the third conveyor belt not necessarily take place parallel to its starting position, but it is too an adjustment of the third conveyor belt achievable with a defined angular position between the first conveyor belt and the main extension plane of the third conveyor belt is achieved.

In addition, instead of the standstill function, a mating function can be advantageous in which, for example, the third conveyor belt moves in the same direction as the first conveyor belt (the movement opposite direction of movement of the dough piece) and thereby has a lower running speed. The result is an effective zone, where the transport of the dough is ensured by the lower run of the faster moving first conveyor belt. At the same time, the effective zone of action is increased within a constant conveyor belt length, as the dough moves absolutely slower (machine frame reference frame) more slowly. This further contributes to a reduction in overall machine dimensions.

The Invention is based on a particularly advantageous embodiment closer in the drawings explained. These show:

1 a schematic sectional view of a dough processing machine of the prior art;

2 a schematic sectional view of a dough processing machine according to the invention.

Figure drawing 1 shows a dough processing machine 1 from the prior art for shaping and processing of dough pieces 4 the one machine frame 2 has, over which a feed conveyor 3 is arranged, with which dough pieces 4 can be introduced into the editing process. In conjunction with the feed conveyor 3 is a funnel 5 provided by the introduced dough pieces 4 on the surface 6 the feed conveyor 3 be dropped off; be discontinued; be deducted; be dismissed. An input roller 7 presses the initially ball-like dough pieces 4 in flat form, as dough pieces 4 ' you can see. About more rolls 8th become the dough pieces 4 '' further flattened and in a winding machine 9 with two winding tapes 10 . 11 entered, which rotate in opposite directions, but have different speeds and between them a winding nip 12 form. The rolled up strands (dough pieces 4 ''' ) are now using a baffle 13 on the top of a first conveyor belt 14 discontinued and go through a relaxation zone 15 leading to the right-hand end of the first conveyor belt 14 enough. There is another baffle 16 a deflection of the dough pieces 4 ''' in strand form. These are at the bottom, ie under the lower strand 17 , along a first active plate 18 for return transport again in the first transport direction (directed to the left) out.

About a tilted third baffle 19 the dough pieces fall 4 ''' from the gap of the active plate 18 and the bottom strand 17 out on the surface 6 of the second conveyor belt 20 , about whose upper strand 21 a second active plate 22 is arranged to an upper effective range 23 to build.

After passing through this upper Vorwirkbereiches 23 Be about an approximately U-shaped baffle 24 the ever-thinner dough pieces ( 4 ''' ) (this depends on the setting of the active plates) in an endreaction area 25 between an active plate 26 and the bottom strand 27 of the second conveyor belt 20 introduced. At the end 28 then they fall out and can be taken up by further funding or by a collecting sheet.

From the in drawing figure 2 illustrated dough processing machine 1 is instead of the active plate 18 a third, between the first and the second conveyor belt 14 . 20 arranged conveyor belt 40 intended. This conveyor belt has at least on its upper side at least partially a relaxation zone 42 on top of which is the dough piece to the second conveyor belt 20 is transported. The promotion of the dough 4 ' takes place such that the feed conveyor 3 and the winding machine 9 the dough piece 4 transported in a first transport direction A, on the first conveyor belt 14 the direction of transport is changed and the dough piece is changed 4 ''' is moved in a second transport direction B. On the third conveyor belt 40 corresponds to the direction of movement of the dough again the transport direction A, on the second conveyor belt 20 the dough piece is moved in the transport direction B and under the second conveyor belt 20 in the first transport direction A. It is essential that between the first and the third conveyor belt 14 . 40 a relaxation zone 42 for those on the third conveyor belt 40 transported dough pieces 4 ''' is arranged. At the respective end sides or deflection points of the conveyor track of the dough piece 4 ''' are end deflection means 16 . 19 . 24 arranged.

The total length L1 of the two conveyor belts 14 . 20 is about the total length L2 of feed conveyor 3 and winding machine 9 match, with the third, intermediate conveyor belt 40 has a lower overall length.

The common extension length L2 of feed conveyor 3 and winding machine 9 essentially corresponds to the respective extent length L1 of the first and / or second conveyor belt 14 . 20 , Further, the feed conveyor is 3 as well as the first, second and third conveyor belt 14 . 20 . 40 arranged substantially horizontally one above the other.

• – Die wirksame Förderlänge auf dem dritten Förderband 40 (am Obertrum 41) ist kürzer oder gleich der wirksamen Förderlänge 15 auf dem ersten Förderband 14 auf dessen Obertrum.
• – Die wirksame Förderlänge auf dem Obertrum 41 des dritten Förderbandes 40 ist kürzer als die wirksame Förderlänge auf dem Obertrum 27 des zweiten Förderbandes 20.
• – Die wirksame Förderlänge auf dem zweiten Förderband 20 (auf dem Obertrum 21) ist kürzer als die wirksame Förderlänge auf dem zweiten Förderband 20 (auf dem Untertrum 27).
• – Die wirksame Förderlänge auf dem dritten Förderband 40 und auf dem zweiten Förderband 20 stimmen im wesentlichen überein.

As in the illustrated exemplary embodiment of the subject invention, it is related to the effective conveyor lengths of the conveyor belts 14 . 20 . 40 as follows:

• - The effective conveying length on the third conveyor belt 40 (on the upper strand 41 ) is shorter than or equal to the effective conveying length 15 on the first conveyor belt 14 on its upper strand.
• - The effective conveyor length on the upper run 41 of the third conveyor belt 40 is shorter than that Effective conveyor length on the upper run 27 of the second conveyor belt 20 ,
• - The effective conveyor length on the second conveyor belt 20 (on the upper strand 21 ) is shorter than the effective conveying length on the second conveyor belt 20 (on the lower strand 27 ).
• - The effective conveying length on the third conveyor belt 40 and on the second conveyor belt 20 essentially agree.

Especially these enumerated Ensure machine design features both individually for itself as well as in combination a favorable relationship between total / required Trajectory to overall length dimensions of dough processing machine.

The third active plate 26 has on its two longitudinal ends acting electromotive adjustments 30 which may be coupled with a sensor to in situ continuous dough pieces 4 ''' roll out in the form of thin strands more or less long.

According to the invention, the feed conveyor 3 and the winding machine 9 form a first machine unit X. The first conveyor belt 14 forms its own machine unit Y, the third conveyor belt arranged underneath 40 the separate machine unit W the lowest second conveyor belt 20 a separate machine unit Z, so that the machine is easily dismantled. It is also possible to separate the machine unit X such that the feed conveyor 3 with the attached parts of the winding machine 9 is separable.

The second conveyor belt 20 comprehensive lowermost machine unit Z also serves as a carrier for machine units arranged above W, Y, X. Further, the lowermost machine unit Z is on a rollable machine frame 2 arranged, which is movably supported by means of rollers on the ground.

The between the first and the second conveyor belt 14 . 20 arranged machine unit W is formed in a preferred embodiment as a modular insert, either a third conveyor belt 40 or as an alternative module, a third conveyor belt 40 in combination with a plate of action 18 includes. Where the effective plate 18 and the conveyor belt 40 lie in the combined module substantially an extension plane (not shown). Furthermore, with the machine according to the invention also an operation according to the prior art drawing figure 1 be achieved, in which the third conveyor belt 40 in a standstill and / or mating mode is switchable and thus the third conveyor belt 40 the function of an active plate according to the active plate 18 according to drawing figure 1 occupies. For this purpose, it is particularly advantageous if the third conveyor belt 40 at least at its distance D to the first conveyor belt 14 is adjustable, for example by means of a motor or manual drive. For example, the third conveyor belt 40 in a supine position take the standstill operation, that means the band 40 does not rotate with it and thus serves by the transport of the dough pieces 4 ''' by means of the lower run of the first conveyor belt 14 as active plate for the actual relaxation area 42 , which in this case as effective range 42 occurs.

In addition, the adjustment of the third conveyor belt 40 not just a parallel change in the height of the third conveyor belt 40 but rather can also be a desired angle between the lower strand 17 of the first conveyor belt 14 and the upper strand 41 of the second conveyor belt 40 be set defined.

Another alternative with respect to a modular dough processing machine 1 is it when the third conveyor belt 40 dough 4 ''' with its upper band area (upper strand 41 ) in a first transport direction and with its lower band area (lower strand 42 ) transported in the opposite direction, wherein between the third 40 and the second conveyor belt 20 an active plate 22 is arranged. In this case, the active plate 22 both with their underside in operative connection with the dough pieces 4 ''' and the upper strand 21 of the second conveyor belt 20 stand, as well as with the top of the active plate 22 in operative connection with dough pieces 4 ''' and the bottom strand 43 of the third conveyor belt 40 stand (not shown).

1

Teigbearbeitungsmaschine

2

machine frame

3

feed conveyor belt

4

dough

5

feeding hopper

6

surface

7

input roller

8th

roller

9

winder

10

wrap

11

wrap

12

winding gap

13

baffle

14

first conveyor belt

fifteen

relaxation zone

16

additional baffle

17

Bottom strand of 14

18

molding plate

19

third baffle

20

second conveyor belt

21

obertrum

22

molding plate

23

upper area of influence

24

baffle

25

Endwirkbereich

26

second molding plate

27

strand

28

End of 20

30

electromotive adjustment

40

third conveyor belt

41

Obertrum v. 40

42

Relaxation zone v. 40

43

Untertrum v. 40

A

first transport direction

B

second transport direction

D

Distance v. 17 and 41

W

Machine unit v. 40

X

Machine unit v. 3 and 9

Y

Machine unit v. 14

Z

Machine unit v. 20

L1

length of extension

L2

Extension length v. 20

L3

Extension length v. 40

Claims (24)

Dough processing machine ( 1 ) for forming and processing dough pieces, in particular dough strands and croissants, having the following characteristics: - on a machine frame ( 2 ) are arranged: a feeding belt ( 3 ) for the introduction of dough pieces ( 4 ) in the machining process, - on the output side of the feed conveyor ( 3 ) a winding machine ( 9 ) for carrying out a winding process on the dough pieces ( 4 '' ), - a first conveyor belt ( 14 ) with a relaxation area ( 15 ) and - a second conveyor belt ( 20 ) with an effective range, wherein the feed conveyor ( 3 ) and the winding machine ( 9 ) over both the first conveyor belt ( 14 ) as well as above the second conveyor belt ( 20 ) are arranged and the second conveyor belt ( 20 ) Dough pieces ( 4 ''' ) both on its upper band (upper strand 21 ) as well as with its opposite lower band (Untertrum 27 ), characterized in that a third between the first and the second conveyor belt ( 14 . 20 ) arranged conveyor belt ( 40 ) is provided, which at least on its upper side (upper strand 41 ) a relaxation zone ( 42 ) and the dough piece ( 4 ''' ) to the second conveyor belt ( 20 ) promotes. Dough processing machine according to claim 1, characterized in that the conveying of the dough pieces ( 4 ' ) through the feed conveyor ( 3 ) and the winding machine ( 9 ) in a first transport direction (A), on the first conveyor belt ( 14 ) in a second transport direction (B), on the third conveyor belt ( 40 ) again in the first transport direction (A), on the second conveyor belt ( 20 ) again in the second transport direction (B) and under the second conveyor belt ( 20 ) takes place in the first transport direction (A). Dough processing machine according to claim 1 or 2, characterized in that between the first and the third conveyor belt ( 14 . 40 ) a relaxation zone ( 42 ) for those on the third conveyor belt ( 40 ) subsidized dough pieces ( 4 ''' ) is arranged. Dough processing machine according to one of claims 1-3, characterized in that for conveying the dough pieces ( 4 ) from the top to the bottom of a conveyor belt ( 14 . 20 . 40 ) end deflection means ( 16 . 19 . 24 ) are arranged. Dough processing machine according to one of the preceding claims, characterized in that the first and second conveyor belts ( 14 . 20 ) have approximately the same length (L 1) and the third, intermediate conveyor belt ( 40 ) has a shorter length. Dough processing machine according to one of the preceding claims, characterized in that the common extension length (L2) of feed conveyor belt (L2) 3 ) and winding machine ( 9 ) of the respective extent length (L1) of the first and / or second conveyor belt ( 14 . 20 ) corresponds. Dough processing machine according to one of the preceding claims, characterized in that the feed conveyor belt ( 3 ) as well as the first, second and third conveyor belts ( 14 . 20 . 40 ) extend substantially horizontally superimposed. Dough processing machine according to one of the preceding claims, characterized in that the effective conveying length on the third conveyor belt ( 40 ) (on the upper strand 41 ) is shorter than or equal to the effective conveying length ( 15 ) on the first conveyor belt ( 14 ) (on the upper strand). Dough processing machine according to one of the preceding claims, characterized in that the effective conveying length on the upper strand ( 41 ) of the third conveyor belt ( 40 ) is shorter than the effective conveying length on the lower strand ( 27 ) of the second conveyor belt ( 20 ). Dough processing machine according to one of the preceding claims, characterized in that the effective conveying length on the second conveyor belt ( 20 ) (on the upper strand 21 ) is shorter than the effective conveying length under the second conveyor belt ( 20 ) (under the lower strand 27 ). Dough processing machine according to one of the preceding claims, characterized gekennzeich net, that the effective conveyor lengths on the third conveyor belt ( 40 ) and on the second conveyor belt ( 20 ) are substantially the same. Dough processing machine according to one of the preceding claims, characterized in that the active plate ( 26 ) under the second conveyor belt ( 20 ) is adjustable by motor. Dough processing machine according to one of the preceding claims, characterized in that the winding machine ( 9 ) two at opposite speeds winding in opposite directions ( 10 . 11 ), which between them a winding nip ( 12 ) form. Dough processing machine according to one of the preceding claims, characterized in that the feed conveyor belt ( 3 ) and the winding machine ( 9 ) one from the machine frame ( 2 ) separate removable first machine unit (X) form. Dough processing machine according to one of the preceding claims, characterized in that the first, second and / or third conveyor belt ( 14 . 20 . 40 ) separate, from the machine frame ( 2 ) form removable further machine units (Y, Z, W). Dough processing machine according to one of the preceding claims, characterized in that the overhead winding machine ( 9 ) and feed conveyor ( 3 ) formed first machine unit (X) on the / the underlying machine units) (Y, W, Z) can be latched. Dough processing machine according to one of the preceding claims, characterized in that the second conveyor belt ( 20 ) comprehensive lowermost machine unit (Z) serves as a carrier for overlying machine units (W, X, Y). Dough processing machine according to one of the preceding claims, characterized in that the lowermost machine unit (Z) is mounted on a rollable machine frame ( 2 ) is arranged. Dough processing machine according to one of the preceding claims, characterized in that between the first and the second conveyor belt ( 14 . 20 ) arranged machine unit (W) either a third conveyor belt ( 40 ) or a third conveyor belt ( 40 ) and an active plate ( 18 ). Dough processing machine according to one of the preceding claims, characterized in that the third conveyor belt ( 40 ) can be switched to a standstill and / or mating mode, and thus the function of an active plate ( 18 ) occupies. Dough processing machine according to one of the preceding claims, characterized in that the third conveyor belt ( 40 ) at least at its distance D to the first conveyor belt ( 14 ) is adjustable. Dough processing machine according to claim 21, characterized characterized in that Adjustment of the distance D is motor driven. Dough processing machine according to claim 21 or 22, characterized in that the adjustment of the distance D, the angle between the plane of extension the lower strand of the first conveyor belt and the extension plane of the upper strand of the third conveyor belt variable is. Dough processing machine according to one of the preceding claims, characterized in that the third conveyor belt ( 40 ) Dough pieces ( 4 ''' ) with its upper band area (upper strand 41 ) in a first transport direction and with its lower band area (lower strand 43 ) transported in the opposite direction, wherein between the third ( 40 ) and the second conveyor belt ( 20 ) An active plate is arranged.