EP0865521B1 - Matting device - Google Patents

Description

The invention relates to a nonwoven layer with the features in the preamble of procedural and Device main claims.

Such a fleece layer is known from EP-0 609 907 A2 known. The trained as a so-called band layer Fleece layer has two relatively movable Main carriage and two endless and looped all-round driven laying tapes. The tapes are running parallel at least in the section between the main carriages, taking up and guiding the pile between them. The fleece layer on the input side has a pile pick-up a so-called tape infeed of the laying tapes. That of two Side tapes come together here and form an inlet section with an opening angle of the tapes of at least 20 °. The inlet slot on The entrance to the inlet section is therefore very large and much wider than the pile thickness. The one Laying tape fed pile is in the tape infeed with a obtuse angles obliquely downwards against the horizontal redirected. Due to the large opening angle and the wide Inlet slit, the pile is open in the inlet section and is only at the bottom between the two adjacent pulleys between the laying tapes clamped and guided on both sides. The pile can be in the Inlet section at high speeds from the bottom Lift off the tape. This can be especially the case with sensitive Lead to faults. In this arrangement, the Feed speed limited.

Other similar developments, e.g. according to the EP-A-0 517 568, tend to have one before the tape entry very wide and wide opening inlet funnel create. Here the laying tape feeds the pile a sloping band section, open on the pile transported and only in one at the lower end Pressure line between the two adjacent pulleys and the laying tapes are clamped and guided on both sides. There is a difference from the aforementioned prior art only in a different band guide between the main car. However, the problems with the tape entry are the same as at EP-0 609 907 A2.

FR-2 553 102 shows another nonwoven layer. in the Belt entry, the two laying tapes have two parallel juxtaposed and straight belt sections that are extend vertically downwards, making the horizontal fed pile at the belt inlet a deflection of 90 ° experiences. In practice it has been shown that such Belt infeed also only for limited Feed speeds of the pile and Working speeds of the fleece layer can be used. If the feed speeds get too high, it can to demolish in the very light and highly sensitive Fiber pile come.

WO 91/15618 shows a further variant of the Belt infeed, in which both laying tapes over the main carriage two large deflection rollers are guided. This forms there is also another inlet funnel for one Placing tape fed pile. The two large deflection rollers are horizontally next to each other at about the same height arranged, whereby the pile only about at midpoint of the two rollers by the ones that come close together here Laying tapes are recorded and guided on both sides. Before and then the tapes pass through the roller shape apart again. These two aforementioned fleece layers are for higher feed speeds of the pile and Processing speeds of the fleece layer designed. By merging the Laying tapes and the correspondingly short guide length however, there are speed limits Problems.

From DE-A 19 27 863 and DE-A 24 29 106 are also Fleece layer with stationary belt inlets known, where the tapes over stationary arranged deflection rollers are guided. Both fleece layers show horizontal tape inlets.

In DE-A 24 29 106 the two tapes form one horizontal inlet slot, which corresponds to that of the Carding incoming feed belt connects. At the top Main carts are loosened from each other, whereby the pile is deflected downwards by 90 ° and only on the transported and guided an underlying laying tape becomes. In DE-A 19 27 863 the pile is over stationary upstream conveyor belt fed and before the tape entry in free fall on one somewhat sloping underneath Laying tape section brought. The second laying tape is only some distance behind this point. Of the Inlet slot is created very late at the Deflection point in the following horizontal inlet section of the tape infeed. Both embodiments with the stationary belt infeed significantly limit the Speeds of pile feed and fleece layer.

It is an object of the present invention to To show fleece layers with an improved tape infeed.

The invention solves this problem with the features in the main claim.
In the tape inlet according to the invention, as in the prior art, there is an inclined downward sloping inlet section, which, in contrast to the prior art, is formed by two tape sections running close to one another. The belt sections form a narrow inlet slot between their adjacent deflecting rollers when they enter the belt inlet, which slot is adapted to the pile thickness. In the subsequent run-in section, the two belt sections take up the fed pile and guide it on both sides and / or cover it.

The band sections are at an obtuse angle against the Feed or infeed direction directed obliquely downwards. As in the prior art, this has the advantage that the Florum diversion takes place more gently and the acting Centrifugal forces do not get too big. Thanks to the inclined position the upper band section as a cover for the pile act on the deflection and lifting off the pile Prevent centrifugal forces, wind effects etc.

The tape inlet according to the invention ensures a special gentle and safe picking up and guiding of the pile. He allows much higher tape speeds and Pile feed speeds while maintaining a high Functional and operational security.

The band sections are preferably straight and can run essentially parallel over a certain distance. Alternatively, one with a sharp angle is funnel-shaped narrowing inlet section possible. In the The pile can optionally be infeed-free guided or gradually pressed together or clamped become. Due to the funnel-shaped inlet section fast moving pile and the contained therein Air is gentle over a longer distance and time pushed out. Abrupt nips, quick Air currents and turbulence that damage the pile or could destroy them. It is advantageous if the inlet section essentially is going straight.

The pile is at the top due to the sloping inlet section Gently absorbed at the end and sharper only at the lower end redirected. It is advantageous to use the lower one Deflection point to provide at least one belt loop. In a particularly advantageous embodiment There are at least two strap loops, the first Band loop in front of the deflection point and the second Band loop is arranged behind it. This will result in the critical points of the diversion Relative speeds of the laying tapes or their Band sections prevented. The pile can be special can be redirected safely and unencumbered. The pile will preferably at three or more points in the Deflection area clamped by deflection rollers.

To adapt to different operating conditions of the There are fleece layers, varying pile types, etc. various setting options at the belt infeed. In particular, the width and possibly also Slope of the inlet section can be changed. The adjustability of the spacing of the tapes enables an exact adjustment to the pile thickness and the Setting the necessary for the transport of the pile Friction conditions. A preferred setting option depending on the design of the tape infeed Delivery of the different deflection rollers or in one plate-like support device. But there are also other design variants are possible.

The tape infeed can be stationary or mobile. In the preferred embodiments it is located or on the upper main car.

The one running between the uppercarriage and the laying carriage Outlet path can also be at an angle to Horizontal run. This allows one more Reduction of the deflection angle of the pile in the superstructure and a reduction in the centrifugal forces acting on the pile in the redirection area.

The lower laying tape in the inlet section can be in one Run straight ahead of the inlet. Of the The pile is fed from a feed belt onto this laying belt transfer. Alternatively, this can be done in the inlet section lower laying tape also designed as a feed belt be. In this case, the lower tape can be used for formation of the inlet gap before the inlet is redirected twice be. The design of the lower tape as well Feed belt saves some rollers and drives and is therefore cheaper.

Before the tape entry, a pressure roller, preferably a sieve or perforated roller lie on the pile to do this serves to remove air from the pile.

In an alternative embodiment, the Feed line and the inlet line in a common Level. This plane is around relative to the horizontal inclined downwards towards the superstructure. At In such an entry zone, the pile is not unnecessary deflected and can be fed straight to the superstructure become.

In the subclaims are further advantageous Embodiments of the invention specified.

Figur 1:

eine Übersichtsdarstellung eines Vlieslegers mit einem bewegten Bandeinlauf am Legewagen,

Figur 2:

eine vergrößerte und detaillierte Detailansicht des Bandeinlaufs von Fig. 1,

Figur 3:

eine Übersichtsdarstellung eines Vlieslegers in Variation zu Fig. 1 mit einem stationären Bandeinlauf,

Figur 4:

eine Detaildarstellung des Bandeinlaufs von Fig. 3 mit einer vorgelagerten Andrückwalze,

Figur 5:

ein alternatives Ausführungsbeispiel des Bandeinlaufs von Fig. 4, bei dem das untere Legeband zugleich das Zuführungsband ist, und

Figur 6:

ein weiteres alternatives Ausführungsbeispiel zu Fig. 4 und 5, bei dem das untere Legeband zugleich das Zuführungsband ist.

The invention is shown in the drawings, for example and schematically. In detail show:

Figure 1:

an overview of a fleece layer with a moving belt infeed on the laying carriage,

Figure 2:

2 shows an enlarged and detailed detailed view of the tape inlet of FIG. 1,

Figure 3:

1 shows an overview of a nonwoven layer in variation to FIG. 1 with a stationary belt inlet,

Figure 4:

3 shows a detailed illustration of the strip inlet of FIG. 3 with an upstream pressure roller,

Figure 5:

an alternative embodiment of the tape inlet of Fig. 4, in which the lower laying tape is also the feed belt, and

Figure 6:

a further alternative embodiment to FIGS. 4 and 5, in which the lower laying belt is also the feed belt.

Figures 1 and 3 show a fleece layer in the top view (1), which is designed as a so-called band layer. He has an upper main carriage in a housing or frame (54) (2) and a lower main carriage (3) and can over it one or more auxiliary wagons or tension wagons (32, 34) exhibit. Above the carriages (2,3,32,34) are means suitable rolls two endless laying tapes (5,6). At least the two main carriages (2, 3) are suitable Drives driven reciprocally. The two Laying tapes (5,6) can also be and variable speed drives.

That from a pile generator (not shown), e.g. one Card or a cardboard-produced fiber pile (7) arrives via a feed belt (25) into the fleece layer (1). He will via a feed path (26) to or on the upper main carriage (2) guided and arrives at the one described in more detail below Tape inlet (4.9) between the two laying tapes (5.6). The latter are at least in the area between the two Main carriage (2,3) in a loop parallel to each other and take the pile (7) between them, transport and guide him. This loop area is referred to as the outlet section (27). He can extend horizontally or diagonally and the main carriage (2,3) directly or via a fixed redirection (not shown) connect. Preferably, the Outlet line (27) straight.

On the lower main carriage (3), the so-called laying carriage, the pile (7) emerges downwards and becomes on one transversely continuous take-off belt (8) to form a fleece (23) filed. The laying carriage (3) moves over the take-off belt (8) back and forth, causing the pile (8) in several layers one on top of the other across and zigzag to the delivery direction is filed. The pile (7) becomes scale-like paneled. The laying tapes (5,6) step on the laying carriage (3) again apart and are made in separate loops away from the outside and then to the tape inlet (9) again returned.

For the constructive training and function of the Fleece layer (1) there are various ways, such as they e.g. from that mentioned in the introduction to the description State of the art are known. The two main cars (2,3) can form a short Pass line in the same direction as in DE-A-19 27 863 or EP-A-0 517 568 or in opposite directions with stationary Belt deflection as with FR-A-2 553 102 or the WO 91/156018 move. To influence the pile placement on the trigger belt (8) can be by means of the auxiliary or Tensioners (32,34) internal storage are formed. It can also be worked with delay when laying the pile, around a certain thickness profile of the fleece (23) adjust.

In the nonwoven layer of Figures 1 and 2, the tape inlet (4) movable and is located on the superstructure (2). He has one comparatively short inlet section (9) with a fixed one Length. Figures 3 to 6 show a variant with a stationary belt infeed (4) in front of the uppercarriage (2) is arranged. Here the inlet section (9) is larger and has a variable length.

Figure 2 illustrates the tape inlet (4) of the fleece layer (1) of Figure 1 in detail. In this embodiment the belt inlet (4) is located on the upper main carriage (2). At the tape inlet (4) the two meet behind the Laying trolley (3) again separately guided laying tapes (5,6) together, then run close together and take that from outside pile (7) between them. In the the embodiment shown serves a laying tape (5) at the same time as pile feeder (25) and is made accordingly the housing (54) of the fleece layer (1) led out. Of the Flor (7) lies open on the laying tape (5) and is transported from this to the tape inlet (4).

At the tape infeed (4) the two laying tapes (5,6) forming a narrow inlet slot (12) Deflection rollers (14, 16) brought together. To the deflection rollers (14,16) is followed by the inlet section (9) by two essentially straight ones Band sections (10,11) of the laying tapes (5,6) up to one further deflection (15) is formed. The band sections (10,11) take the pile (7) between them and cover remove it or guide it along both sides of the Inlet section (9).

The inlet slot (12) has an adjustable width that adapted to the respective requirements of the pile material can be. It is preferably somewhat larger than that Pile thickness, so that the loose pile (7) initially without Squeeze or compression can be included. The Width can also be equal to or less than the pile thickness and if necessary already when the pile (7) lead to a clamping in the tape inlet (4).

The band sections (10,11) run essentially parallel. This can be strictly parallel. The distance of the Alternatively, it can also be determined by the running direction (24) reduce. This will make you look at an acute angle funnel-shaped tapering inlet section (9) formed in the pile (7) is gradually pressed together and clamped is before it reaches the lower deflection (15). At In this variant it can be advantageous to extend the width of the Inlet slot (12) larger than the pile thickness adjust. But it is also possible with a small one Slot width the pile (7) immediately upon entering the Tape inlet (4) to clamp and compression along the length to increase the inlet section (9) even further. The vote the appropriate setting depends on the type of Pile material and possibly also after Pile feed speed and / or other parameters.

The inlet section (9) or the one forming it Band sections (10,11) are at an obtuse angle β against the horizontal or the feed or Inlet direction (24) inclined downwards. This obtuse angle β in Fig. 1 refers to the Belt deflection of the laying tape (5) on the deflection roller (14). The preferably horizontal feed path (26) of the Laying tape (5) is in the sloping tape section (10) redirected. The obtuse angle β between the band areas is greater than 90 ° and less than 180 °. He is preferably about 135 °.

At the lower end of the inlet section (9) the pile (7) and the laying tapes (5,6) again preferably in one redirected horizontal direction and get over the Outlet section (27) to the laying carriage (3). At the belt inlet (4) thus finds an overall deflection of the pile (5) or Laying tapes (5.6) instead of 180 °. Through the slope of the Inlet section (9) is the deflection at its upper end weaker and stronger at the lower end. By the Belt inlet (4) is the pile (7) in front of the lower stronger one Redirection (15) over a longer straight section already safely guided and covered and does not get through it suddenly to the clamping point on the deflection (15).

The laying tape (5) is preferably on the top over two Main carriage (2) deflection rollers arranged relatively stationary (14.15). The deflection rollers (14, 15) are corresponding to the slope of the inlet section (9) in the Height and laterally spaced.

The upper deflection roller (16) of the other laying belt (6) is above the opposite deflecting roller (14) arranged. The line connecting the two roller axes runs approximately perpendicular to the incline of the inlet section (9).

The laying tape has at the lower end of the inlet section (9) (6) two or more belt loops (13). The one Band loop (13) is located in front of the Deflection roller (15) formed deflection point and the second Band loop (13) behind it. Over the strap loops (13) becomes the one in the tape inlet (9) above or outside Laying tape (6) from the pile (7) at the critical deflection points replaced.

The replacement will make them different Belt speeds in the area of the deflection avoided. The two laying tapes (5,6) move namely with the intervening pile around the axis of the Deflection roller (15). The laying tape on top (6) should due to its greater distance from this axis have a higher relative orbital velocity around which The pile (7) is tension-free over the entire deflection area to be able to lead. However, the two tapes (5,6) have the same orbital speed. The two Belt loops (13) eliminate the problem.

The first belt loop (13) is made by deflecting rollers (17,18,19). The first deflecting roller (17) sits on lower end of the band section (11) and is above the deflection roller (15). It is arranged so that the connecting line between the two roller axes in approximately perpendicular to the inclination of the inlet slot (12) is aligned. The laying tape (6) or its overhead Band section (11) is approximately at one point detached from the pile (7) on which the one below Band section (10) on the deflecting roller (15). Of the The pile (7) arrives in the deflection area without distortion the roller (15).

Via the deflection roller (19), which is offset obliquely to the rear the laying tape (6) is pulled out to the tape loop (13) and then returned to the guide roller (18). Latter is essentially at the same level as the Deflection roller (15) and has approximately the same diameter. As a result, the two laying tapes (5,6) come in approximately Axle height of the two rollers (15, 18) together again and can lead the pile (7) between them. You have with you essentially the same running speed that too is equal to the pile speed.

The second belt loop is located behind the deflection roller (18) (13) by a laterally offset deflection roller (20) is pulled out. Their diameter is such that the laying tape (6) into a horizontal and deflected section parallel to the laying tape (5) becomes. In this subsequent horizontal section the two tapes (5,6) so close together that they guide the pile (7) between them on both sides.

Below the deflection roller (15), a support device, e.g. a support roller (21) for the laying tape (6) is arranged be. The support roller (21) affects the distance of the Laying tapes (5,6).

Due to the roller arrangement shown, the pile (7) in the Area of the lower deflection on the deflection roller (15) three places between the tapes (5,6) or clamped and therefore reliable and with the same Belt speeds led. At the end of the inlet section (9) the guide extends between the belt sections (10,11) just until the lower deflection roller is reached (15). Then there is a two-sided tour again at the level of the axes of the deflecting rollers (15, 18). The third management point is at the end of the redirection between the deflecting roller (15) and the preferably vertical support roller (21). At this The tape (5) leaves the guide roller again (15).

The belt inlet (4) and the inlet section (9) are adjustable. For example, the deflection rollers (16,17,18) and the backup roller (21) with suitable The position of the delivery devices (22) can be changed. The infeed direction is preferably in the region of the inlet slot (12) located deflection rollers (16,17) essentially perpendicular to the direction of the Inlet section (9). This allows the width of the Inlet slot (12) and possibly also the funnel-shaped narrowing of the inlet section (9) changed become. The laying tapes (5, 6) can be permeable to air, so that due to the increasing narrowing of the inlet section (9) the pile pressed together with the air it contains is pushed out.

The deflecting roller (18) is preferably horizontal adjustable and can be compared to the deflection roller (15) of the laying tape (5) can be approximated or removed. This will make the second leading point for the pile (7) influenced in the lower deflection area.

The support roller (21) is vertically adjustable and can thereby also opposite the deflecting roller (15) be approximated or removed. With the backup roller (21) becomes the pile guide on said third Leadership influenced.

The running direction of the pile (7) or the one feeding it Laying tape (5) in the area of the tape inlet (9) is through Arrows (24) marked.

Variations of the embodiment shown are in FIG possible in different ways. In the shown Embodiment, the two begin the pile (7) receiving tape sections (10,11) approximately at the same height at the entrance of the inlet slot (12). Alternatively, the overhead band section (11) also pulled a little higher be and if necessary via the deflection point on the roller (14) protrude. This is e.g. to catch a very fast running pile cheap. The band section (11) but can also be arranged a little lower. The training, number and arrangement can also be changed the belt loops (13) at the lower end of the inlet section (9). For example, only one lower strap loop (13) to be available. The setting and Delivery options for the individual guide rollers or other belt-guiding parts at the belt inlet (4). The Inlet section (9) can also be somewhat curved.

In the alternative shown in Figure 3 The fleece layer (1) has a separate embodiment Feed belt (25) over which the pile (7) of a arranged in front of it with a uniform but variable speed is supplied. Of the Fleece layer (1) is in turn equipped with four carriages, namely with an uppercarriage (2), a laying carriage (3) and one tensioning carriage (32,34) for each laying tape (5,6).

The first laying tape (5) takes over in the area of Feed section (26) the pile (7) from the feed belt (25) and guides the pile (7) into a stationary one Tape inlet (4) between the two laying tapes (5,6), the up to the superstructure (2) and the deflection there (15) extends. The stationary belt inlet (4) is nearby the end of the path of movement of the superstructure (2) approximately in the middle of the laying width of the fleece layer (1). The laying tape (5) is the lower laying tape for the tape inlet (4) fed while the upper laying tape (6) over a Deflection roller (16) is fed.

The stationary guide roller (16) has a Compared to the other deflecting rollers considerably larger Diameter on, whereby at the tape inlet (4) Inlet funnel is formed. The laying tapes (5,6) point at the belt inlet (4) e.g. a distance that is larger than the pile thickness. The inlet slot (12) thus formed enables the tape (7) to be fed in initially without substantial clamping or compression. Below the lower laying tape (5) is one in height adjustable support device (21) with which the gap width of the inlet slot (12) can be adjusted.

Between the inlet slot (12) and the superstructure (2) extends the essentially straight inlet section (9), in which the tape sections (10,11) of the laying tapes (5,6) gradually converge so that they at the end of the inlet section (9) at the latest on the superstructure (2) have a distance that is adapted to the pile thickness. This distance can be, for example, the pile thickness correspond or to a fixed value, e.g. 15 mm, be set. In the funnel-shaped narrowing Inlet section (9) gradually becomes the pile (7) guided and covered on both sides. This can done without compression. Alternatively, the pile (7) in the inlet section (9) also gradually compressed and be clamped. The inlet section (9) changes with the Movement of the superstructure (2) their length.

In the superstructure (2), the upper laying tape (6) as in above-described embodiment of a Guide roller (17) and on the rollers (18,19,20) below Formation of two ribbon loops (13) deflected several times, see above that the pile (7) in the deflection area on the superstructure (2) is not runs between the two laying tapes (5,6). First below the deflecting roller (15) for the lower laying belt (5) the pile (7) is again between the two tapes (5,6). On the roller (56) of the laying carriage (3) a support of the laying tapes (5,6) take place.

The one between the upper carriage (2) and the laying carriage (3) Outlet section (27) preferably runs in a straight line, the pile (7) after further deflection by 90 ° in the Laying carriage (3) exits at an exit point and from the floating laying carriage (3) on the Discharge belt (8) is deposited. The laying carriage (3) points also a guide roller (56) for the laying tape (5) after double deflection via the deflection rollers (60.62) again via further deflection rollers to the Tape inlet (4) is returned. The laying tape (6) will deflected via a deflection roller (58) and back to the Belt inlet (4) returned.

The inlet section (9) and / or the outlet section (27) preferably run at an obtuse angle β to Horizontal in the direction of movement (24) of the laying tapes (5,6) diagonally downwards. This angle is as in the first Embodiment of Figures 1 and 2 between 90 ° and 180 ° and is e.g. approx. 170 °.

A tension carriage (32) is provided for the laying tape (5), depending on the movement of the laying carriage (3) is controlled. A tension carriage is for the laying tape (6) (34) provided, depending on the movement of the Upper carriage (2) and the laying carriage (3) is controlled. The movement of the tensioning carriage (34) with the help of Toothed belt positively controlled.

The tensioning carriage (34) is in the direction of rotation of the laying tape (6) behind a stationary deflection roller (36) and the further stationary deflection roller (16) at the belt inlet (4) arranged.

Figure 4 shows the tape inlet (4) with an enlarged Scale, one from a perforated or screen roller existing pressure roller (30) the pile (7) before Pre-compress inlet slot (12). The pressure roller (30) can be at a predetermined distance from the lower one Laying tape (5) are held.

Figure 5 shows an alternative embodiment, at which the lower laying tape (5) in the inlet section (9) also serves as a feed belt (25). One before Leading section (9) in front of the belt inlet (4) Feed path (26) is in the same plane as that Inlet section (9) and is in relation to the horizontal Direction of movement of the laying tape (5) inclined downwards.

In this embodiment, the pile (7) in the Feed zone and in the inlet section (9) up to the Upper carriage (2) no longer deflected.

Figure 6 shows a further embodiment in which the lower laying belt (5) also serves as a feed belt (25) serves. In this case, the laying tape (5) over the Deflection rollers (38 to 40) deflected several times, so that Laying tape (5) to form the inlet slot (12) Distance from the laying tape (6) of the inlet section (9) can be supplied. Instead of the support device (21) the deflection roller (39) can be adjusted in height be.

REFERENCE SIGN LIST

1

Fleece layer

2nd

Main car, superstructure

3rd

Main car, laying car

4th

Belt infeed

5

Laying tape, feed belt

6

Laying tape, counter tape

7

Pile

8th

Trigger tape

9

Inlet section

10th

Band section

11

Band section

12th

Inlet slot, inlet funnel

13

Strap loop

14

Deflection roller, feed belt

15

Deflection roller, feed belt

16

Deflection roller, counter belt

17th

Deflection roller, counter belt

18th

Deflection roller, counter belt

19th

Deflection roller, belt loop

20th

Deflection roller, belt loop

21

Support device, support roller

22

Delivery device

23

fleece

24th

Running direction

25th

Feed belt

26

Feed path

27

Outlet section

30th

Pressure roller

32

Tension wagons, auxiliary wagons

34

Tension wagons, auxiliary wagons

36

Deflection roller

38

Deflection roller

39

Deflection roller

40

Deflection roller

42

Deflection roller

54

frame

56

Guide roller

58

Deflection roller

60

Deflection roller

62

Deflection roller

Claims (22)

1. Nonwoven layering apparatus with a plurality of carriages (2, 3) movable relative to one another and with a plurality of layering belts (5, 6), between which the web (7) is received and is guided, at least in regions, the nonwoven layering apparatus (1) having, on the entry side, a belt inlet (4) of the layering belts (5, 6) for receiving the web, the belt inlet (4) having an inlet zone (9) inclined obliquely downwards, with two belt sections (10, 11) running adjacently to one another, characterized in that the belt sections (10, 11) converged at the entrance to the belt inlet (4) form a narrow inlet slit (12) adapted to the web thickness and, in the inlet zone (9), run essentially parallel or at an acute angle to one another and so near one another that they guide the web (7) on both sides, or cover it, in the inlet zone (9).
2. Nonwoven layering apparatus according to Claim 1, characterized in that the inlet zone (9) narrows in a funnel-shaped manner, the web (7) being gradually compressed and clamped in the inlet zone (9), before reaching the lower belt deflection (15).
3. Nonwoven layering apparatus according to Claim 1 or 2, characterized in that the inlet zone (9) and/or its inlet slit (12) have/has an adjustable width.
4. Nonwoven layering apparatus according to Claim 1, 2 or 3, characterized in that the width of the inlet slit (12) is greater than the web thickness.
5. Nonwoven layering apparatus according to Claims 1 to 4, characterized in that the web (7) is guided in the inlet zone (9) so as to be free of compression.
6. Nonwoven layering apparatus according to one of Claims 1 to 4, characterized in that the web (7) is guided in the inlet zone (9) with gradually increasing compression or clamping.
7. Nonwoven layering apparatus according to Claim 1 or one of the following claims, characterized in that the belt inlet (4) is arranged on the upper carriage (2).
8. Nonwoven layering apparatus according to one of Claims 1 to 6, characterized in that the belt inlet (4) is arranged in a stationary manner upstream of the upper carriage (2).
9. Nonwoven layering apparatus according to Claim 1 or one of the following claims, characterized in that the belt sections (10, 11) run essentially in a straight line.
10. Nonwoven layering apparatus according to Claim 1 or one of the following claims, characterized in that the inlet zone (9) and/or the outlet zone (27) are/is directed obliquely downwards at an obtuse angle β to the horizontal and/or the feed direction (24).
11. Nonwoven layering apparatus according to Claim 1 or one of the following claims, characterized in that one layering belt (5) is designed as a feed belt (25) for transporting the web (7) to the belt inlet (9).
12. Nonwoven layering apparatus according to Claim 7 or one of the following claims, characterized in that the belt sections (10, 11) commence at approximately the same height at the upper belt deflection (14).
13. Nonwoven layering apparatus according to Claim 3 or one of the following claims, characterized in that at least one belt section (10, 11) is arranged so as to be capable of being advanced onto the web (7).
14. Nonwoven layering apparatus according to Claim 1 or one of the following claims, characterized in that deflecting rollers (14, 15, 16, 17, 18) are arranged at the ends of the belt sections (10, 11).
15. Nonwoven layering apparatus according to Claim 1 or one of the following claims, characterized in that the upper belt section (11) has at least one belt loop (13) at the lower end of the inlet zone (9).
16. Nonwoven layering apparatus according to Claim 1 or one of the following claims, characterized in that two deflecting rollers (15, 18) are located horizontally opposite one another at the lower end of the inlet zone (9), the upper belt section (11) having a belt loop (13) upstream of its deflecting roller (18).
17. Nonwoven layering apparatus according to Claim 7 or one of the following claims, characterized in that a supporting means (21) is arranged below the lower deflecting roller (15) of the feeding layering belt (5).
18. Nonwoven layering apparatus according to Claim 14 or one of the following claims, characterized in that at least one of the deflecting rollers (14, 15, 16, 17, 18) and/or the supporting means (21) have/has an advancing means (22).
19. Nonwoven layering apparatus according to Claim 1 or one of the following claims, characterized in that a pressure roller, preferably a perforated roller (30), acting on the web (7) is arranged upstream of the belt inlet (4).
20. Method for producing a nonwoven by receiving a web (7), entering on a layering belt, between two endlessly revolving layering belts (5, 6) in a belt inlet (4) of a nonwoven layering apparatus (1), by transporting the web (7) between the layering belts (5, 6) over an obliquely downward inlet zone (9) to an upper carriage (2), movable back and forth in the direction of the entering web (7) and deflecting the layering belts (5, 6), and from the upper carriage (2) to a layering carriage (3), movable back and forth over the entire layering width and likewise deflecting the layering belts (5, 6), and by depositing the web (7) by means of the layering carriage (3) onto a discharge means (8), characterized in that the web (7), entering the belt inlet (4) at a high inlet speed, is guided, via an inlet slit (12) adapted to the web thickness, into the inlet zone (9) and there, for the successive removal of the excess air transported along with the web (7), is received between two belt sections (10, 11) of the layering belts (5, 6), the said belt sections running essentially parallel or at an acute angle to one another and near one another.
21. Method according to Claim 20, characterized in that the spacing of the layering belts (5, 6) at the end of the inlet zone (9) is adapted to the web thickness.
22. Method according to Claim 20 or 21, characterized in that the spacing of the layering belts (5, 6) at the end of the inlet zone (9) is reduced to the web thickness.

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