EP1675796B1 - Device for laying a flexible material web - Google Patents

Abstract

A device for laying a flexible material web 1 on a point of deposit 4 and which has at least one pair of deposit rollers 2, 3 that rotate in opposite directions. The deposit rollers 2, 3 form part of a deposit carriage 5 which is reciprocated in a reversible direction over at least the deposit length L of the material web 1 . The device is more cost-effective in that the deposit carriage 5 has a smaller width than the point of deposit 4 and is reciprocated in a reversible direction over at least the deposit width B of the point of deposit 4.

Description

The present invention relates to a device for depositing a flexible material web with at least one counter-rotating pair of laying rollers, wherein the web is fed by means of laying rollers at least one depositing, wherein the laying rollers are part of a laying carriage, which is movable over the laying length of the web with reversible orientation wherein the laying carriage has a smaller width dimension than the depositing point and is movable over the depositing width of the depositing station with reversible orientation.

A device of the type in question arises US Pat. No. 6,155,551 , There is described an apparatus for stacking strip-shaped, flexible material. The carriage there moves back and forth along a third frame above the laying length and transversely, with a second frame and the third frame being moved together, so that the next layer is deposited next to the previously formed layer. If the entire shelf has taken place over the length and width, the platform rotates by 90 ° and the laying process takes place again, but on a pad consisting of 90 ° offset layers. The flexible material web comes free and unguided to the laying rollers. This can lead to twists of the material web between the feed and pair of rollers, so that the material web top in the stack could have faulty down.

From the DE 3422352 A1 is a device for stacking an approximately flat-strand to an approximately cuboid block known. There, the strand is introduced from a spaced source into a collection device mounted on a transverse carriage. The transept is feline mounted on a longitudinal carriage. It is essential that no conveyor belts are provided. The feeding of the web to the feeder is irrelevant.

Further disclosed JP 60102367 a device with a transversely and longitudinally movable laying carriage, wherein the web of material freely suspended from a conveyor belt passes into a funnel and from there between two rollers to an outlet opening. Also in this device, no conveyor belts are provided and thus no secure feeding of the material web.

According to the DE 101 25 452 C2 a device is known, wherein a material web is also guided via laying rollers as part of a laying carriage to a depositing point. Although the secured transport of the material web on a conveyor belt is already disclosed there, however, the laying carriage has a width dimension which corresponds to the width of the deposit location. The deposit can be designed as a pallet, as a lifting table, as cardboard or the like. Per laying carriage is provided in each case a deposit, can be stored on the longitudinal and in the transverse direction. The laying in the longitudinal direction is realized by the movability of the laying carriage in the longitudinal direction. The depositing in the transverse direction is realized in that the material web, when it is narrower than the width of the laying rollers, is moved transversely across them. For this purpose, a material supply device is equipped correspondingly transversely movable. From DE 101 25 452 C2 Known device, which indeed discloses a secure material web feed by means of conveyor belt, requires due to the width of the laying carriage according to the depositing width a very extensive and heavy design. Such a design entails that larger masses must be accelerated, so find strong drives use, which is of course of design and in terms of the required energy associated with high costs. In addition, large, heavy designs are always at the expense of production speed.

Another device for depositing a flexible material web results from the DE 298 23 580 U1 , Also in this device, a counter-rotating pair of laying rollers is provided, via which the material web is fed to a depository. The laying rollers from the DE 298 23 580 U1 but are not part of a laying carriage and have the same width dimension as the deposit point and are also not transversely movable.

From the DE 44 38 770 A1 a next device is known which involves the picking up of yarn take-up rolls or the loading of winding machines with yarn take-up rolls. This device has a memory for accommodating these rollers. So it's a storage where reels are stored. The DE 196 44 383 C ₁ deals with a pivotable laying arm, not with laying rollers.

Starting from the from the US Pat. No. 6,155,551 known prior art, the present invention seeks to provide a device of the type in question, which allows a higher production speed with secure transport of the web to the laying rollers.

The above object is solved by the features of claim 1. Thereafter, a device of the type in question is equipped and developed so that the web is transportable on a circulating around the laying rollers of the laying carriage conveyor belt to the deposit and that provided with the laying carriage Wegausgleichswagen is, whose width dimension is smaller than that of the deposit.

Starting from US Pat. No. 6,155,551 has first been recognized that the free, unguided feeding the web can lead to a faulty stack. According to the invention, it has been recognized that a secured onward transport of the material web can be achieved if it is transported on a conveyor belt to the depositing station, which revolves around the laying rollers of the laying carriage. During the circulation on the conveyor belt, a rotation of the material web on the way to the laying carriage is excluded. Next, it has been recognized that the device achieves a higher production speed, when provided to compensate for the oscillating movement of the laying carriage Wegausgleichswagen has a smaller width dimension than the deposit. By compared to the laying width smaller width dimension of the Wegausgleichswagens mass and size is reduced and saved material and drive energy.

If a lightweight design with small dimensions can be moved longitudinally and transversely, it also opens up the possibility of approaching several laying sites with one laying carriage and of successively supplying different depositing places with the material web. The enormous advantage of the device according to the invention which is movable in the longitudinal and transverse direction lies in the flexible filling of depositing points with less constructive effort and low operating costs. It should be emphasized that the device or the laying carriage not only allows the longitudinal and transverse processes in the area of a single depository, but also the method to several depository, which are arranged side by side and / or behind each other.

In terms of design, the laying carriage could be part of a frame, which is arranged transversely movable on a frame. Of particular advantage is when the laying carriage also would be adjustable in height, since then could be dispensed with lifting tables. Due to the height adjustability of the laying carriage, control and regulation processes could be realized more easily than when setting an external lifting table. Again, the laying carriage could be part of the frame and the frame, for example, be moved to vertical columns of the frame.

Another, in other respects advantageous embodiment of the device according to the invention, wherein lifting tables are used, provides that the laying carriage supplies two depositing points with the material web. Once a stack is formed, the laying carriage can be moved to the next depositing point and start there with the deposition process. In this way, longer downtime is avoided. Only a cutting operation for separating the material web after obtaining the desired stack height is required. The cutting process could be carried out in such a way that the new beginning of the strip is already traveling towards the laying rollers.

In view of high production speeds, it is also of great advantage if the device according to the invention has means for holding down the uppermost deposited material web. The means for holding down could extend parallel to the deposited material web and contact them in the area of the uppermost deposited material web and thus hold it down. Due to the contact of the means for holding down with the top deposited material web wind effects, air turbulence or similar influences, and undesirable reversals in elastic material webs, such as fiber material webs can be largely excluded, especially in light materials with a weight below 60 g / m ² . In order to produce the contact to the desired extent, the deposit could be adjustable in height and / or the means for holding down itself, which are then tuned in their movement in particular to the height adjustment of the laying carriage. By exerting a certain pressure during the contacting not only a position assurance of the uppermost layer can be realized, it could also be applied a predetermined pressing force, for example, to reduce the volume of the stack and bring more material for packaging. The contacting in question allows the deposition of the web at higher speeds, especially at speeds above 200 m / min.

The means for holding down could comprise at least one hold-down roller. So that the entire uppermost material web is covered on both sides by the material web exit from the laying rollers, two hold-down rollers could roll on both sides of the laying carriage on the stack surface. The pair of hold down rollers would then be traversable with the laying carriage in the transverse direction. From the structural arrangement forth, the hold down rollers could extend from end to end side of the frame and rotate in the transverse direction and move.

As an alternative to the hold-down rollers, which are only temporarily in contact with smaller sections of the uppermost layer of the material web stack with a smaller roller diameter, at least one separate hold-down belt could be provided as means for holding down. Conceivable would be two hold-down bands, which extend to both sides of the laying carriage and cooperate with corresponding holding and clamping devices. Both hold-down bands could each be arranged on both sides of the laying carriage or also in front of and behind it. The attachment could also be done on the frame in which the laying carriage and the conveyor belts, etc., are arranged, or via revolving rollers. The running direction of the two hold-down straps can take place in the longitudinal direction parallel to the laying length or in the transverse direction parallel to the laying width. In view of the longitudinal and Querverfahrbarkeit beyond the range of a single deposit, the hold-down bands or the hold-down band could span the entire area, which is determined by the frame of the Voerrichtung. A particularly advantageous embodiment provides only a hold-down band, which extends at least over the deposit point in the transverse direction and longitudinal direction and rotates in the transverse direction. The hold-down band could be guided over circulation rollers, which are arranged on the longitudinal sides of the frame, extend in the longitudinal direction and rotate in the transverse direction. In order for the material web to reach the depositing point in the preferred embodiment with a single circumferential hold-down band, this web could have a passage opening for the material web, which is always arranged synchronously with the position of the laying carriage or the exit point of the material web from the laying rollers.

Further means for holding down could be in the form of a lamellar wall, a guide plate, a profile, all of which exert a more or less large contact pressure on the stack on the uppermost layer of the deposited material web.

The feeding of the material web to the laying carriage could take place via a feed web upstream of the feed rollers, which comprises a rotary store, which compensates due to its storage function and the different need for material web feed by the oscillating movement of the laying carriage. The variation and change in length of the material web caused by the change of direction during the reciprocating motion requires different material web feed speeds. To realize this, the rotary storage could be constrained and this includes a motor that is part of the entire drive system of the device and is thus synchronized to the position of the laying carriage. The positively driven synchronous compensation of a turning process by the rotary memory leads to a smooth and uniform material web feed. The idea of the rotary storage described above can also be used in depositing operations in which the oscillating movement has little or no significance.

According to a preferred embodiment of the device according to the invention, the material web could also be transported between the two conveyor belts to the laying rollers. The speed of the material web during transport on the conveyor belt or between two conveyor belts could be the same amount as the speed of the conveyor belt or conveyor belts. During transport between two conveyor belts, these could form a pressure zone, whereby a largely wrinkle-free feeding of the material web between two conveyor belts, wherein the material web rests on a conveyor belt and is covered by the other, is achieved. In this way, on the one hand excluded that the material web slips and on the other hand, that the material web is dirty or otherwise exposed to external influences. The equal amount of the speed of the conveyor belt to the speed of the transported on the conveyor belt material has the advantage that electrostatic effects largely avoided and the material itself is spared. The reduction in friction is especially important with regard to the deposition of the material web on the previous layer. The two laying rollers or the laying carriage always rolls on the material web, so that it can not lead to a deterioration of the position of the previous situation, to a drape, to a static charge or to a loss of quality. The use of a laying carriage also causes the speed of the top The position of the deposited material web and the speed of the material web reaching the uppermost layer and the speeds of the layers are equal to one another.

In summary, it is stated that with the device according to the invention a handy and lightweight construction for depositing material webs is given, which increases the production speeds and lowers the manufacturing and energy costs. It could be a stack on a bearing block created. In addition, by the height adjustability of the laying carriage, the means for holding down and the compensation of the turning operations by a positively driven rotary memory further for the invention significantly enriching embodiments presented, which are conducive to solving the problem of the invention.

Fig. 1

in schematischer Darstellung, eine Perspektivansicht eines ersten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung,

Fig. 2

in schematischer Darstellung, eine Vorderansicht eines zweiten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung mit höheneinstellbarem Legewagen,

Fig. 3

in schematischer Darstellung, eine Seitenansicht eines dritten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung mit zwei Ablegestellen,

Fig. 4

in schematischer Darstellung, eine Vorderansicht eines vierten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung mit Niederhaltewalzen,

Fig. 5

in schematischer Darstellung, eine Aufsicht auf den Gegenstand aus Fig. 4,

Fig. 6

in schematischer Darstellung, eine Vorderansicht eines fünften Ausführungsbeispiels der erfindungsgemäßen Vorrichtung mit Niederhalleband und

Fig. 7

in schematischer Darstellung, eine Aufsicht auf den Gegenstand aus Fig. 5.

There are now various possibilities for designing and developing the teaching of the present invention in an advantageous manner. For this purpose, on the one hand to the claims subordinate to claim 1, on the other hand, to refer to the following explanation of several embodiments of the invention with reference to the drawings. In conjunction with the explanation of the stated embodiments of the invention with reference to the drawing, generally preferred embodiments and developments of the teaching are explained. In the drawing show

Fig. 1

in a schematic representation, a perspective view of a first embodiment of the device according to the invention,

Fig. 2

in a schematic representation, a front view of a second embodiment of the device according to the invention with height-adjustable laying carriage,

Fig. 3

1 is a schematic representation of a side view of a third exemplary embodiment of the device according to the invention with two deposit boxes;

Fig. 4

in a schematic representation, a front view of a fourth embodiment of the device according to the invention with hold-down rollers,

Fig. 5

in a schematic representation, a top view of the object Fig. 4 .

Fig. 6

in a schematic representation, a front view of a fifth embodiment of the device according to the invention with Niederhalleband and

Fig. 7

in a schematic representation, a top view of the object Fig. 5 ,

The Fig. 1 to 7 show a device for depositing a flexible material web 1 with at least one counter-rotating pair laying rollers 2, 3, wherein the material web 1 by means of the laying rollers 2, 3 at least one depositing station 4 can be fed, wherein the laying rollers 2, 3 part of a laying carriage 5, which at least on the laying length L of the web 1 with reversible orientation is movable.

The laying carriage 5 has a smaller width dimension than the depositing point 4 and can be moved over the depositing width B of the depositing point 4 with a reversible orientation. For this purpose, the laying carriage 5 is part of a frame 6, which is arranged transversely movable in a frame 7. The frame 7 has at its end sides in the transverse direction extending guide rails 8, on which the frame 6 is movably mounted.

While in Fig. 1 a first Ausführungsbeisplei is shown, wherein the depositing 4 is embodied by a lifting table, which is adjustable in height and is moved downwards with growing stack 9 is in Fig. 2 not the depositing 4, but the laying carriage 5 in height H adjustable. On the frame 7 vertical guide rails 10 are arranged for the frame 6 for the change in height, with which the laying carriage 5 in the appropriate position relative to the fixed deposit 4 in the vertical direction is movable.

Out Fig. 3 results in a third embodiment of the device according to the invention, wherein the laying carriage 5 two depositing points 4 are assigned. The laying carriage 5 is in this third embodiment over both Ablegelängen L movable and supplies successively a depositing point 4 after the other with the material web 1 without tedious interruption.

The FIGS. 4 to 7 illustrate that, according to a fourth and fifth embodiment, two types of means for holding down the uppermost deposited web 1 are provided.

To 4 and 5 The hold-down rollers 11, 12 extend approximately from end to end of the frame 7 and are moved together with the laying carriage 5 in the transverse direction, the hold-down rollers 11, 12 each at the turning point of the laying carriage 5 protrude significantly above the laying width B here.

A hold-down band 13 is in the FIGS. 6 and 7 represented, which rotates about the circulation rollers 14, 15 over the entire region of the frame 7 in the transverse direction. The hold-down band 13 extends far beyond the laying length L and the laying width B of the depositing point 4 and extends - in each case at the current height of the uppermost layer of the deposited material web 1 or the stack 9 - almost from end to end side of the frame 7.

The hold-down belt 13 has a passage opening, not shown in detail, which is always arranged synchronously to the position of the laying carriage 5 or to the exit point of the material web 1 from the laying rollers 2, 3.

Especially from the Fig. 1 and 3 As a result, the material web 1 can be supplied via a material web feed device 16 which is arranged upstream of the laying rollers 2, 3 and which comprises a rotary storage 17. The rotary memory 17 is positively guided and there is provided a motor, not shown, which is part of the entire drive system of the device and is thus synchronized to the position of the laying carriage 5. The rotary memory 17 compensated in the exercise of its memory function due to the oscillating motion different need for material web. 1

Also with regard to the conveyor belts 18 are particularly the Fig. 1 and 3 meaningful, which show that the material web on a conveyor belt 18 to the cooperating with the laying carriage 5 Wegausgleichswagen 19 and then between two conveyor belts 18 to the laying rollers 2, 3, wherein the speed of the material web equal to the speed of the conveyor belt or The conveyor belt is.

The Fig. 3 further shows two motors designated M. The adjacent to the material web feed 16 motor M drives the conveyor belts 18 and the opposite motor M drives the laying carriage 5 at.

With regard to further features, not shown in the figures, reference is made to the general part of the description.

Finally, it should be noted that the teaching of the invention is not limited to the embodiments discussed above. Rather, the most diverse embodiments of the overall arrangement, the individual laying modules are possible.

LIST OF REFERENCE NUMBERS

1 web 2 put roller 3 put roller 4 departure point 5 laying carriage 6 frame 7 frame 8th Guide rails across for 6 9 Stack on 4 10 Guide rails vertical for 6 11 Hold-down roller 12 Hold down belt roller 13 Hold down belt 14 pulleys 15 pulleys 16 Materialbahnzuführeinrichtung 17 Revolving storage 18 conveyor belts 19 adjustment carriage L folding length B deposit width H height M engine

Claims (14)

1. Device for the laying a flexible material web (1) and having at least one pair of deposit rollers (2, 3) rotating in opposite directions, where the material web (1) can be supplied by means of the deposit rollers (2, 3) to at least one point of deposit (4), where the deposit rollers (2, 3)are a part of a deposit carriage (5), which can be traversed at least over the deposit length (L) of the material web (1) and with a reversible direction, where the deposit carriage (5) has a smaller width than the point of deposit (4) and can be traversed over the deposit width (B) of the point of deposit (4) and with a reversible direction.
   characterized by the fact
   that the material web (1) can be transported to the point of deposit (4) on a transport belt (18) running around the deposit rollers (2, 3) of the deposit carriage (5) and that a path compensation carriage (19) working together with the deposit carriage (5) is provided, where the width of the path compensation carriage is smaller than that of the point of deposit (4).
2. Device according to claim 1, characterized by the fact that the deposit carriage (5) is a component of a frame (6) which is disposed in such a manner that it can be traversed on a rack (7).
3. Device according to claims 1 or 2, characterized by the fact that the deposit carriage (5) is adjustable in height(H).
4. Device according to one of claims 1 to 3, characterized by the fact that the deposit carriage (5) is assigned to two points of deposit (4).
5. Device according to one of claims 1 to 4, characterized by the fact that hold-down means for the uppermost deposited material web (1) are provided.
6. Device according to claim 5, characterized by the fact that the hold-down means are adjustable in height.
7. Device according to claim 5 or 6, characterized by the fact that the hold-down means comprise at least one hold-down roller (11, 12).
8. Device according to claim 7, characterized by the fact that a pair of hold-down rollers (11, 12) is provided, which are traversable with the deposit carriage (5) in the transverse direction, at least over the deposit width (B).
9. Device according to claim 5 or 6, characterized by the fact that the hold-down means (7) comprise at least one hold-down belt (13).
10. Device according to claim 9, characterized by the fact that the hold-down belt (13) extends at least over the point of deposit (4) and preferably runs around the entire area of the rack (7) in the transverse direction.
11. Device according to claim 10, characterized by the fact that the hold-down belt (13) running around comprises a penetrating opening which is always disposed synchronously to the position of the deposit carriage (5) or to the exit side of the material web (1) from the deposit rollers (2, 3).
12. Device according to one of claims 1 to 11, characterized by the fact that the material web (1) can be supplied via a material web supply device (16) disposed in front of the deposit rollers (2, 3), where the material web supply device comprises a rotary storage device (17).
13. Device according to claim 12, characterized by the fact that the rotary storage device (17) is driven and for this comprises a motor which is part of the entire drive system of the device and is thus synchronized to the position of the deposit carriage (5).
14. Device according to one of claims 1 to 13, characterized by the fact that the material web (1) can be transported to the point of deposit (4) at least partially between two transport belts (18), which in particular form a pressure zone, and that the rate of the material web (1) is equal to the rate of the transport belt (18) or transport belts (18).

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