EP1010787B1 - Cross-lapper - Google Patents

Description

The invention relates to a nonwoven layer, which in particular is suitable for large laying widths, with the features in Preamble of the main claim.

Such a nonwoven layer is known from US-A-4,830,351. The fleece layer has two main carriages and two endless ones Conveyor belts running around and running over the main car. In addition to the upper main car, there is a tension car with arranged several roles, which for tensioning the one Conveyor belt serves. Here is the upper conveyor belt run in several tension loops alternately on rollers on upper main car and guided on the tension car. The lower The dreams of the two conveyor belts are from the lower main carriage out to support on both sides without support Deflected pulleys. The lower conveyor belt dreams are located here at a distance above a cross Outfeed. The pile deposited on the discharge belt or the multi-layer fleece formed from this is through separate blinds covered.

EP-A-0 522 893 shows another nonwoven layer. He has two main cars and two auxiliary or tension cars with two endless and over the main and Auxiliary car guided conveyor belts and a discharge belt. The conveyor belts are with their upper conveyor belt runs led to the upper main car and from there together to the led lower main car where they separated and again be led apart. These lower conveyor belt dreams extend from the lower main car at least in areas above the trigger belt without support up to to frame-fixed pulleys and from there to the auxiliary or Tensioning carriage. The auxiliary or tension wagons move below the discharge belt in a by a retracted Divider partitioned area and pull with simple Deflection pulleys in the lower loops Conveyor belt runs out. If such a nonwoven layer for Larger laying widths can cause problems with the belt guide in the area of the lower conveyor belt runs result.

Another fleece layer is known from practice. He has two main cars with two endless and on the main car conveyor belts and a Discharge Conveyor. A support carriage is for the conveyor belts Supporting a horizontal lower conveyor belt run intended.

The fleece layer also has additional sheets for lateral edge guide of the band. With this design the conveyor belt run is lifted off the support car and at an angle led down to the frame. This has the emergence of one Opening between the lower conveyor belt and the deposited fleece in the result of the driving movements the car entering air and for swirling the Fleece can provide.

It is an object of the present invention Fleece layer with a better support carriage construction show.

The invention solves this problem with the features in the main claim.
The design of the belt guide in the support carriage according to the invention has the advantage that the undesirable wind influences are avoided and the lower conveyor belt dreams largely retain their covering function. The support carriage can move back and forth relative to the deposited fleece without disturbing or damaging the fleece. The tape guide according to the invention can also be present on several support carriages.

Of particular advantage is an omega tour, the one offers optimal belt guidance with low construction costs. This also allows the conveyor belt to be under tension held and tightened. This is despite the Movement of the support carriage possible.

In the nonwoven layer according to the invention, at least one can the lower support car rigid with the upper main car or superstructure. It is preferably integrated. This has the advantage that the construction effort is minimized. In addition, the drive transmission more direct, precise and less prone to wear. moreover this design is particularly compact. In addition, this can Carriage arrangement particularly favorable in the frame of the Store, guide and drive the fleece layer.

The fleece layer according to the invention can also one or several additional support carriages for one overhead Have conveyor belt run, which also with a local Interacting tension carts. All support cars can with the The uppercarriage is in the drive connection.

Further advantageous results from the subclaims Embodiments of the invention.

Figur 1:

eine perspektivische Übersichtsdarstellung für einen Vliesleger mit zwei Stützwagen,

Figuren 2 und 3:

zwei Seitenansichten des Vlieslegers in zwei Betriebsstellungen,

Figur 4:

eine Seitenansicht des Vlieslegers mit einer Darstellung der Führung der beiden Förderbänder,

Figur 5:

eine Seitenansicht des Vlieslegers von Figur 4 mit einer Darstellung der Antriebsverbindungen der Stütz- und Spannwagen zu den beiden Hauptwagen,

Figur 6:

eine vergrößerte Seitenansicht des unteren Hauptwagens oder Legewagens,

Figur 7:

eine vergrößerte Seitenansicht des oberen Hauptwagens oder Oberwagens mit einem integrierten Stützwagen,

Figur 8:

eine vergrößerte Seitenansicht eines weiteren Stützwagens,

Figur 9:

eine vergrößerte Seitenansicht eines oberen Spannwagens,

Figur 10:

eine vergrößerte Seitenansicht eines oberen Stützwagens und

Figur 11:

eine vergrößerte Seitenansicht eines oberen Spannwagens.

The invention is shown schematically and by way of example in the drawings. In detail show:

Figure 1:

3 shows a perspective overview for a fleece layer with two support carriages,

Figures 2 and 3:

two side views of the fleece layer in two operating positions,

Figure 4:

a side view of the fleece layer with a representation of the leadership of the two conveyor belts,

Figure 5:

3 shows a side view of the fleece layer from FIG. 4 with an illustration of the drive connections of the support and tensioning carriages to the two main carriages,

Figure 6:

an enlarged side view of the lower main carriage or laying carriage,

Figure 7:

an enlarged side view of the upper main carriage or superstructure with an integrated support carriage,

Figure 8:

an enlarged side view of another support carriage,

Figure 9:

an enlarged side view of an upper wagon,

Figure 10:

an enlarged side view of an upper support carriage and

Figure 11:

an enlarged side view of an upper wagon.

Figure 1 shows a fleece layer (1) in the form of a so-called fleece tape layer, which from a card single-layer pile (3) fed via a feed belt (4) with two revolving endless conveyor belts (7,8) and on a transversely extending discharge belt (5) a multi-layer fleece and in the form of scales stores. The arrows (33) indicate the direction of conveyance of the pile (3).

The fleece layer (1) shown corresponds in its Basic design and non-woven layers known in its kinematics according to EP 0 517 563 or WO 97/19209.

The fleece layer (1) has two main carriages (10, 11), which are Move back and forth over the discharge belt (5). The embodiment shown is a co-rotating fleece layer (1), in which the main carriage (10,11) always drive in the same direction. The Upper carriage (10) moves with half Speed compared to the lower laying carriage (11) and also places half the distance between the reversal points back.

The two conveyor belts (7,8) are movable Deflection rollers (36) on the two main carriages (10, 11) and via stationary deflection rollers (37) in the frame (2) of the Fleece layer (1) in movable loops. The supplied single-ply pile (3) is first on one Conveyor belt (7) open up to a belt inlet (9) on Superstructure (10) transported where the second conveyor belt (8) come in addition. The tape inlet (9) can be an open one or closed belt inlet.

The two conveyor belts (7,8) meet at the belt inlet (9) together and take the pile (3) between them. she then extend together from the superstructure (10) to Laying carriage (11), which the pile (3) in one over the Discharge belt (5) reciprocating movement with one Laying width (6).

The fleece layer (1) also has two tensioning carriages (14, 15) on the loop length of the conveyor belts (7,8) in keep essentially constant and the following for it ensure that the pile (3) in the edge areas of the fleece (32) is deposited essentially without edge thickening. For the sake of clarity, the tension wagons are (14,15) not shown in Figure 1.

The conveyor belts (7, 8) reappear on the laying carriage (11) apart and extend in on both sides lower horizontal conveyor belt runs (26, 27) across and parallel over the deposited fleece (32) and the discharge belt (5). They act as a cover and can also be opened rest on the fleece (32).

Figures 2 and 3 show the two end positions of the Carriage movements, the laying carriage (11) in FIG. 2 on the right edge of the discharge belt (5) or the Laying width (6) and in figure (3) on the left edge. With this design, those on the superstructure (10) converging conveyor belts (7,8) from the belt inlet (9) in a substantially horizontal band section directly led to the laying car (11).

In an alternative embodiment (not shown) it can also be an opposing layer, in which the two main carriages (10, 11) are always in move in opposite directions. Such a design is e.g. known from EP 0 315 930. In the opposite The two parallel conveyor belts are relaxed (7,8) between superstructure (10) and laying car (11) over a stationary deflection roller arrangement (37) in the frame (2) guided.

The fleece layer (1) shown can be a so-called Paper felt storage, which is for particularly large laying widths (6) is suitable. At least there is support for this the lower conveyor belt dreams (26,27) advantageous. A Such support can also be found in nonwoven layers successfully used with a smaller laying width. The Support consists of at least one auxiliary car (12, 13), which can be moved back and forth over the discharge belt (5) is stored.

In the embodiment shown, each is lower Conveyor belt run (26, 27) your own auxiliary car or Support carriage (12,13) provided. The one for a conveyor belt (7) provided support carriage (12) moves between the Laying carriage (11) and the neighboring frame (2) back and forth ago. The other support carriage (13) is connected to the superstructure (10) rigidly connected and preferably integrated into this.

The main carriage (10,11) and the two support carriages (12,13) are on a lower carriage guide (18) by means of Rollers (34) movably supported. Figure 4 shows this Arrangement. One support carriage (12) is freely movable stored and is in a drive connection (28) the superstructure (10). The drive connection (28) is off Figure 5 can be seen. Figure 4 shows the same Carriage position the guidance of the conveyor belts (7,8).

The coupled support carriage (13) is at a lower approach (25) of the superstructure (10) arranged. Due to its structural Integration does not have its own castors (34). By the rigid coupling or the drive connection (28), e.g. from a castor-fixed castors rotating cable drive can exist, the move two support carriages (12, 13) synchronized with the superstructure (10) with the same direction and speed.

In a construction variant, not shown, the coupled support car (13) independently movable on the Carriage guide (18) or other suitable location be stored. He is then through with the uppercarriage (10) rigidly connected to a rod or the like.

Figures 2 and 3 illustrate the positions of the support car (12,13). If the laying carriage (11) is in a narrow position Neighborhood to the uppercarriage (10) on the right edge of the Laying width (6), the free support carriage (12) a position in about half of the width, in which he the long spread conveyor belt strand (26) between Laying carriage (11) and the left frame (2) approximately in the middle supported. Figure 2 shows this arrangement. In the other The laying carriage is in the extreme position according to FIG (11) and the support carriage (12) side by side on the other edge the laying width (6). The superstructure (10) with its The tensioning carriage (13) then takes a position approximately in the middle Insert width (6) and then support it after the right side spread out lower conveyor belt strand (27) between the laying carriage (11) and the right frame (2).

The belt guide of the conveyor belt dreams (26, 27) on the two Support carriage (12, 13) is preferably of the same design. In a modified embodiment, it can also vary. In the embodiment shown there are the inlet (23) and the outlet (24) for the Conveyor belt dreams (26, 27) each at the same level. To for this purpose the support car (12, 13) has one Omega guide (19) for the conveyor belt dreams (26, 27). she e.g. from three pulleys (20,21,22), the parallel to each other and with their axes in a triangle are arranged. The conveyor belt dreams (26,27) are under the two outer pulleys (20,22) and inside in a raised loop over the middle pulley (21) performed. With this omega guide (19), too Maintain tape tension in an advantageous manner.

In a modified embodiment, more than three pulleys can be arranged. In addition, there are others geometric roller arrangements possible. Depending on the Available space can be the two outer ones Deflection rollers (20, 22) very close to each other be arranged, the middle deflection roller (21) is positioned accordingly high up. At this The cover of the fleece remains (32) largely preserved.

If the fleece layer (1) as shown in the Embodiment equipped with two tension wagons (14, 15) there may be an additional support carriage (16). Figure 4 illustrates the tape guide.

The lower one provided for the left conveyor belt (7) Tension carriage (15) takes over from the left frame (2) returning conveyor belt (7), steers it with his Deflection roller (38) by 180 ° and leads it back into the left frame (2). Here it can be via a tensioning device be tightened additionally and then passes through others Deflections and a lift on the superstructure (10) to the tape inlet (9).

The lower tensioning carriage (15) is on one, for example upper carriage guide (17) by means of rollers (34) movably supported and has a protruding downward Housing part. His deflection roller (38) is thereby in the area above the laying carriage (11) and support carriage (12) as well as below the top edge and the tape inlet (9) of the superstructure (10). The lower tension carriage (15) can thereby according to Figure 3 above the laying carriage (11) and move the support carriage (12) and its tension loop to extend to the uppercarriage (10).

The lower tensioning carriage (15) is in one Drive connection (31) with the superstructure (10) and moved back and forth synchronously with this. His route corresponds to half the laying width (6). Figure 5 illustrates this drive relationship. In the embodiment shown there is a rotating rope drive. Here it can alternatively an independent drive act from the superstructure (10) or the Machine control is controlled.

The other upper tension carriage (14) is also over Rollers (34) on the upper carriage guide (17) movably supported. He is next to with a side distance the lower tensioning carriage (15) arranged and moves in the same direction as this. The upper tension carriage (14) is standing in a drive connection (30) to the laying carriage (11) and is moved back and forth synchronously with it. Here too can the drive connection (30) of the revolving shown Rope drive or an independent drive.

The upper support carriage (16) is also by means of rollers (34) movably mounted on the upper carriage guide (17). It has a support roller (35) over which the upper run the conveyor belt (8) is guided and supported. The Support carriage (16) moves between the upper tension carriage (14) and the right frame (2) back and forth and stands in a drive connection (29) with the superstructure (10). This drive connection (29) can be the same as in the others Cases. The upper support carriage (16) and the Upper wagons (14) can be above the other main and Move auxiliary vehicle (10, 11, 12, 13). The driving length of the the upper carriage (14) corresponds to the full laying width (6) and the travel path of the upper support carriage (16) half Laying width (6).

The lower conveyor belt run (27) is from the laying carriage (11) over the lower tensioning carriage (13) into the right frame (2) guided, deflected upwards and over the support carriage (16) led to the tension carriage (14). Here the conveyor belt (8) deflected by 180 ° by means of a deflection roller (38) and to right frame (2) returned where there is another Deflection roller (37) on the superstructure (10) and Belt inlet (9) arrives. The upper tension carriage (14) pulls his tension loop with a distance over the superstructure (10) and over the other conveyor belt (7). In the right Frame (2) is also a clamping device for Tightening the conveyor belt (8) arranged.

FIGS. 2 and 3 show the positions of the tensioning carriages (14, 15) and the support carriage (16) in the two outer Laying carriage positions. If the laying carriage (11) on right edge of the laying width (6) are the two Spannwagen (14,15) in a relatively close neighborhood on opposite left edge of the laying width (6) positioned. The support carriage (16) is located approximately in the middle between the upper tensioning carriage (14) and the right frame (2). According to the other edge position Figure 3 is the lower tensioning carriage (15) approximately in the middle the laying width (6) positioned while the upper Spannwagen (14) and the support carriage (16) in a relatively narrow Neighborhood to each other and close to the right frame (2) are located.

The carriage guidance (17, 18) can e.g. Guide rails or - be pipes that run across the discharge belt (5) extend between the side frame parts (2). she are in pairs and to the side of the conveyor belts (7,8) arranged. The upper and lower carriage guides (17, 18) are parallel and spaced one above the other. Variations of the embodiment shown are in FIG possible in different ways. For one, they can Support car (12,13,16) in number, arrangement and Drive types vary. Instead of a rope drive, the Auxiliary car (12,13,14,15,16) also a belt or Have chain drive.

Furthermore, the tensioning carriage (14, 15) can be omitted. In a modified embodiment can also only with one Tension wagons get along. Modifications are also possible Assignment and storage of the various main and Auxiliary wagons (10, 11, 12, 13, 14, 15, 16) with each other. In the preferred embodiment shown are the two Main carriage (10.11) through programmable drives that e.g. are equipped with synchronous motors. Through an appropriate program or Computer control can move the car Manufacture of different fleece thicknesses or warping over the laying width (6) varies become.

LIST OF REFERENCE NUMBERS

1

lapper

2

frame

3

pile

4

infeed

5

Discharge Conveyor

6

put width

7

conveyor belt

8th

conveyor belt

9

strip entry

10

Uppercarriage, main carriage

11

Laying car, main car

12

Support car, aid car, free

13

Support car, auxiliary car, coupled

14

Tension wagons, auxiliary wagons, above

15

Tension wagons, auxiliary wagons, below

16

Support car, above

17

Carriage guidance, above

18

Carriage guidance, below

19

Omega-guide

20

idler pulley

21

idler pulley

22

idler pulley

23

Inlet

24

outlet

25

approach

26

lower belt section, cover

27

lower belt section, cover

28

Drive connection support car, below

29

Drive connection support car, top

30

Drive connection tensioning carriage, above

31

Drive connection tensioning carriage, below

32

fleece

33

conveying direction

34

caster

35

supporting role

36

Deflection roller, main carriage

37

Deflection roller, frame

38

Deflection pulley, tension car

Claims (10)

1. Non-wovens folder, in particular for large folding widths, having a discharge belt (5), a plurality of main carriages (10, 11) and two continuously circulating conveyor belts (7, 8) guided via the main carriages (10, 11), wherein at least one support carriage (12, 13, 16) having at least one roller for supporting a conveyor belt strand (26, 27) is provided, characterised in that the support carriage (12, 13) is mounted movably back and forth over the discharge belt (5) and supports the lower conveyor belt strand (26, 27) of a conveyor belt (6, 7) extending over the discharge belt (5), wherein the support carriage (12, 13) has a plurality of deflecting rollers (20, 21, 22) for the conveyor belt strand (26, 27) and the belt inlet (23) and the belt outlet (24) are located at substantially the same height over the discharge belt (5).
2. Non-wovens folder according to Claim 1, characterised in that at least three deflecting rollers (20, 21, 22) are arranged with their axes in a triangle or polygon and form substantially an omega guide (19) for the conveyor belt strand (26, 27).
3. Non-wovens folder according to Claim 1 or 2, characterised in that the non-wovens folder (1) has two support carriages (12, 13) which are each assigned to a lower belt strand (26, 27) of the two conveyor belts (7, 8).
4. Non-wovens folder according to Claim 1, 2 or 3, characterised in that the non-wovens folder (1) has at least one independently movably mounted support carriage (12) which is arranged beside the lower main carriage (11) and has a drive connection (28) to the upper main carriage (10).
5. Non-wovens folder according to any of Claims 1 to 4, characterised in that the non-wovens folder (1) has a support carriage (13) which is rigidly connected to the upper main carriage (10).
6. Non-wovens folder according to Claim 5, characterised in that the support carriage (13) is integrated into the upper main carriage (10).
7. Non-wovens folder according to any of Claims 1 to 6, characterised in that the non-wovens folder (1) has at least one movably mounted tensioning carriage (14, 15) for at least one conveyor belt (7, 8).
8. Non-wovens folder according to Claim 7, characterised in that the tensioning carriage or carriages (14, 15) have a drive connection to at least one of the main carriages (10, 11).
9. Non-wovens folder according to any of Claims 1 to 8, characterised in that the non-wovens folder (1) has at least one other independently movably mounted support carriage (16) which is assigned to a tensioning carriage (14).
10. Non-wovens folder according to Claim 9, characterised in that the support carriage (16) has a drive connection to a main carriage (10, 11).

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