CN103710884A

CN103710884A - Crosslapper and method for operating crosslapper

Info

Publication number: CN103710884A
Application number: CN201310453230.9A
Authority: CN
Inventors: B·吕贝纳赫
Original assignee: Truetzschler GmbH and Co KG
Current assignee: Trutschler Group Europe
Priority date: 2012-10-02
Filing date: 2013-09-29
Publication date: 2014-04-09
Anticipated expiration: 2033-09-29
Also published as: EP2716801B1; EP2716801A2; CN103710884B; EP2716801A3; DE102012019363A1

Abstract

The invention relates to a crosslapper used for formation of a fleece made of many layers of fibrous web. The crosslapper comprises at least one continuously revolving input belt (2) which supplies the fibrous web (3) from the inlet region of the crosslapper up to a laying gap (11) of the laying carriage, and a continuously circulating cover belt (7) which fixes the fibrous web (3) on the input belt (2). The crosslapper is characterized in that the cover belt (7) fixes the fibrous web (3) from the inlet region of the crosslapper (1) up to the laying gap on the input belt(2).

Description

Cross lapping machine and for moving the method for cross lapping machine

Technical field

The present invention relates to a kind of for formed the cross lapping machine of nonwoven fabric by multi-layer fiber suede.

In addition, the invention still further relates to a kind of attached to moving the method for cross lapping machine.

Background technology

In order to manufacture multi-layer nonwoven fabrics, conventionally adopt the carding equipment with follow-up cross lapping machine.In these carding equipments, fiber tufting is transported on supply side, and these fiber tuftings are broken down into single fiber and as plane configuration articles-fiber suede of unconsolidated fabric-provide at outlet side.

For provided carding machine performance is provided, need to improve the suede speed (Florgeschwindigkeit) in the cross lapping machine that is arranged in downstream.Yet, at this, on the slewing rollers of lapping band, there is large centrifugal force, described centrifugal force and traffic direction and tape speed have obviously reduced the qualitative attribute of fiber suede relatively.

According in the lapping machine of EP1870499B1, send band and cover tape to and first fiber suede is remained on therebetween and run parallel.In upper balladeur train, send band to around slewing rollers guiding, cover tape discharge in this send to on fiber suede and via slewing rollers, from upper balladeur train, move out.In the region of slewing rollers of sending band to, fiber suede do not have in chlamydate situation operation and bear by the impact that causes together with the rotation of slewing rollers of sledge movements.Due to alternately changing of upper balladeur train and traffic direction lapping balladeur train, may on affiliated slewing rollers, occur relatively with the acceleration of lapping width and lapping balladeur train in addition until the peripheral speed of five times of the suede speed supplied with.At this, act on centrifugal force on fiber suede with square rising of corresponding peripheral speed.Therefore, open and in the situation that not around on the fiber suede that moves of the periphery guiding of slewing rollers of balladeur train bear the load of big ups and downs.These loads can affect the quality of cross lapping product in appreciable scope.In the region turning at band, fiber suede is only supported by a roller in these regions, produces the triangular part of less desirable opening, the speed of service of this triangular part restriction cross lapping machine.

Because also expect can set and adjustable stretching in cross lapping machine by the acting in conjunction of lapping balladeur train and band, so produced other shortcoming here,, in region between the lapping roller of sending the lapping roller of band to and being oppositely with, there is so-called unsteady stretching, this is because fiber suede is not guided completely in the part turning to, and produces mass defect thus.

EP1367166A1 has described a kind of cross lapping machine, and wherein slewing rollers are configured to suction roll, so as fiber suede from above the process of the band of band below vertically redirecting to this fiber suede is remained on slewing rollers.In addition document regulation: the guiding device by band forms in the localized area of slewing rollers supports from outside to fiber suede.At this, fiber suede is limited by two bands in the region of slewing rollers so.The slewing rollers of suction raise operating cost and because expensive roll structure has improved cost of investment.

Summary of the invention

From prior art, the object of the invention is to: a kind of cross lapping machine is provided and for moving the method for cross lapping machine, can under high-speed case, transports fast and safely fiber suede individual layer or multilayer thus.

The present invention is by realizing proposed object according to the instruction of

claim

1 and 8; Other favourable design feature instantiation of the present invention in the dependent claims.

According to the technology instruction of claim 1, in order to form nonwoven fabric by multi-layer fiber suede, cross lapping machine comprises the band of sending to of at least one continued circling, and this is sent to conveying fiber suede from the infeed region of cross lapping machine until the lapping gap of lapping balladeur train; In addition, cross lapping machine comprises the cover tape of continued circling, and this cover tape is fixed on fiber suede to send to and is with, wherein, cover tape by fiber suede from the infeed region of cross lapping machine until lapping gap is fixed on to send to is with.

By cover tape by fiber suede from feeding region until be with without being interruptedly fixed on to send in lapping gap, do not produce open triangular part.Because the fiber suede between upper balladeur train and lapping balladeur train remains unchanged, clamp or be fixed between two bands, so do not produce to float, do not stretch simultaneously.The reverse band that adopted is so far cancelled, and according to the speed of being oppositely with described in prior art, must synchronize with the speed of sending band to.

In a preferred embodiment, cover tape is around the slewing rollers in the infeed region of cross lapping machine, around the slewing rollers in upper balladeur train and around the lapping roller guiding in lapping balladeur train.Thus, also without interruptedly with the mode of guiding by fiber suede from the infeed region of cross lapping machine via balladeur train transport until lapping balladeur train so that there from lapping gap out.

Another improvement of the present invention is achieved in the following manner, that is, the cover tape in the infeed region of cross lapping machine is relatively sent to be with to acutangulate and arranged.The travelling speed that can remove better due to fiber suede in feeding region is thus supplied to the entrapped air in cross lapping machine.

Realize in the following manner and further reduce the air carrying, that is, described cover tape has opening, and air can spill by these openings.In a preferred embodiment, cover tape is embodied as sieve band.

If the nonwoven fabric generating should not have ridge design, cover tape with send to the operation of identical speed.

If for example expect in order to generate definite ridge design to nonwoven fabric to obtain, stretch or compression, the feed speed of fiber suede improves or reduces lapping carriage speeds relatively.

According to of the present invention for moving the method for cross lapping machine, wherein by sending band to, fiber suede is transported until lapping gap from the infeed region of cross lapping machine, it is characterized in that, from the infeed region of cross lapping machine until lapping gap is fixed on fiber suede to send to by cover tape is with.By the infeed region from cross lapping machine, until lapping gap is fixed on fiber suede constantly and sends between band and cover tape, avoided open triangular part and less desirable stretching (Verzuege).At this, the quality of fiber suede can not suffer damage.

In the favourable embodiment of described method, send band and cover tape to identical speed operation.Avoided thus less desirable stretching.

If expectation obtains the ridge design of nonwoven fabric, the feed rate of fiber suede improves or reduces lapping carriage speeds relatively, to stretch or conpressed fibers suede.

Accompanying drawing explanation

By a possible embodiment who schematically shows, the present invention is described in detail below.Wherein:

Fig. 1 is according to the schematic diagram of the cross lapping machine of prior art;

Fig. 2 is exemplary details figure of the present invention.

The specific embodiment

Fig. 1 exemplarily and only schematically illustrated according to the principle of the cross lapping machine of prior art.Fiber suede 3 is transported to sending to of cross lapping machine 1 by unshowned carding equipment and is with on 2.In cross lapping machine 1, be provided with balladeur train, wherein in this view, can only see slewing rollers 6.In addition, cross lapping machine 1 has lapping balladeur train, shown in this lapping balladeur train for oppositely with 13 lapping roller 10 with for sending the lapping roller 9 with 2 to.Oppositely with 13 lapping roller 10 and between sending to 2 lapping roller 9, be provided with so-called lapping gap 11, fiber suede 3 from this lapping gap out and lay to being arranged on unshowned being with of described lapping balladeur train below.Two

lapping rollers

9,10 and traffic direction have been born such task relatively, that is, fiber suede 3 is put into and is arranged on being with and being folded simultaneously of described lapping balladeur train below perpendicular to current traffic direction shakedown.For this reason, described lapping balladeur train unchangeably along continuous straight runs on predefined width, move back and forth.

In this view, send to 2 and at least around the first and

second slewing rollers

4,5 and around the slewing rollers 6 of described upper balladeur train, turn to.Above sending to 2, be provided with cover tape 7, this cover tape in this view around slewing rollers 8, described on the slewing rollers 6 of balladeur train and 12 guiding of another slewing rollers.Two

bands

2,7 are embodied as continuous band, and these continuous bands are at least being driven on another unshowned slewing rollers.Send to be with 2 and cover tape 7 be not to move abreast, but form towards the unlimited acute angle of carding machine, fiber suede 3 is dragged to wherein and by compacting slightly.Fiber suede 3 is around slewing rollers 6 guiding of upper balladeur train, and wherein, cover tape 7 derives in side direction by slewing rollers 12.Fiber suede 3 transports along accurate contrary directions, and this is to being set in parallel in, to send being oppositely with on 13 with 2 belows because the directed slewing rollers 6 around upper balladeur train of fiber suede turn over 180 ° and lay to.Between the slewing rollers 6 of upper balladeur train and slewing rollers 12, do not expect to have the triangular part of the opening arranging here, this is because fiber suede is not directed herein.Now, be oppositely with 13 with send to be with 2 jointly by 3 restrictions of fiber suede or guiding until lapping gap 11, this lapping gap consists of two lapping rollers 9 of lapping balladeur train and 10 interval.Fiber suede 3 from lapping gap 11 out and by lay to unshowned, be arranged on the lay band of 11 belows, lapping gap.The such situation of region generating in lapping gap 11, that is, fiber suede 3 is not guided and is occurred thus less desirable unsteady stretching on the lapping roller 10 of lapping balladeur train.

In Fig. 2, send to 2 at least around the first and

second slewing rollers

4,5, around the slewing rollers 6 of upper balladeur train and around lapping roller 9 guiding of lapping balladeur train.Cover tape 7 is at least around the slewing rollers 6 of slewing rollers 8, upper balladeur train and around lapping roller 10 operations of lapping balladeur train.Two

bands

2,7 are embodied as continuous band, and these continuous bands are at least being driven on another unshowned slewing rollers.The infeed region of cross lapping machine is with 2 to form by the first slewing rollers 4 with sending to.The slewing rollers 8 of cover tape 7 are arranged on slewing rollers 4 tops.

Fiber suede 3 infeed region from cross lapping machine 1 in the situation that of constant tape swapping is transported until the lapping gap 11 of lapping balladeur train.Triangular part and the less desirable unsteady stretching of all openings have been avoided thus.In the infeed region of cross lapping machine 1, cover tape 7 and send to and be with 2 to acutangulate ground or operation close to each other wedgewise, fiber suede 3 is dragged to wherein and by compacting slightly.Cover tape 2 is implemented like this, that is, the air carrying can for example spill by the opening in band.Sieve band is particularly useful for this.By cover tape 7 is guided around the slewing rollers 6 of upper balladeur train completely, do not produce open triangular part.Meanwhile, because the fiber suede 3 between upper balladeur train and lapping balladeur train remains unchanged, clamp or be fixed between two

bands

2 and 7, so do not produce to float, do not stretch.Describedly oppositely be with 13 to be cancelled, according to described in prior art oppositely the speed of band must synchronize with the speed of sending to 2 equally.According to the present invention, cover tape 7 is to be similar to 180 ° respectively around three

rollers

8,6,10, and wherein, cover tape 7 experience cube are to variation.Fiber suede 3 by send to 2 and cover tape 7 first from the infeed region of cross lapping machine 1, transport upwards balladeur train, the slewing rollers 6 around upper balladeur train turn to 180 ° there, so that from lapping gap 11 out.In order to realize stretching or the compression of fiber suede 3, the feed speed of fiber suede improves or reduces lapping carriage speeds relatively.That is to say, lapping

roller

9 and 10 is operation quickly on the reciprocating direction of level.

As shown in by arrow, send to 2 and cover tape 7 have for the identical traffic direction of fiber suede 3 and conventionally there is identical speed.When two

bands

2,7 move with slightly different speed, lip-deep fiber alignment can be affected to a certain extent with respect to the fiber of the centre of fiber band.

Reference numerals list

1 cross lapping machine

2 send band to

3 fiber suedes

4 first slewing rollers

5 second slewing rollers

The slewing rollers of balladeur train on 6

7 cover tape

8 slewing rollers

9 lapping rollers

10 lapping rollers

11 lapping gaps

12 slewing rollers

13 are oppositely with

Claims

1. cross lapping machine, it is for forming nonwoven fabric by multi-layer fiber suede, what this cross lapping machine comprised at least one continued circling sends band (2) to, and this sends band conveying fiber suede (3) to from the infeed region of cross lapping machine (1) until the lapping gap (11) of lapping balladeur train; In addition described cross lapping machine also comprises the cover tape (7) of continued circling, this cover tape is fixed on fiber suede (3) to send on band (2), it is characterized in that, cover tape (7) by fiber suede (3) from the infeed region of cross lapping machine (1) until lapping gap (11) are fixed on sends to band (2).

2. cross lapping machine as claimed in claim 1, it is characterized in that, cover tape (7) at least around the slewing rollers (8) in the infeed region of cross lapping machine (1), around the slewing rollers (6) in upper balladeur train and around lapping roller (10) guiding in lapping balladeur train.

3. cross lapping machine as claimed in claim 1, is characterized in that, cover tape (7) in the infeed region of cross lapping machine (1) with send band (2) to and acutangulate and arrange.

4. cross lapping machine as claimed in claim 1, is characterized in that, cover tape (7) has opening.

5. cross lapping machine as claimed in claim 4, is characterized in that, cover tape (7) is embodied as sieve band.

6. the cross lapping machine as described in any one in the claims, is characterized in that, cover tape (7) has the speed identical with sending band (2) to.

7. the cross lapping machine as described in any one in the claims, is characterized in that, cover tape (7) has than sending the greater or lesser speed of band (2) to.

8. for moving the method for cross lapping machine, wherein the fiber suede (3) of sending on band (2) is transported from the infeed region of cross lapping machine (1) until lapping gap (11), it is characterized in that, from the infeed region of cross lapping machine (1) until lapping gap (11) by cover tape (7), fiber suede (3) is fixed on and is sent to band (2).

9. method as claimed in claim 8, is characterized in that, sends band (2) and cover tape (7) to identical speed operation.

10. method as claimed in claim 8, is characterized in that, sends band (2) and cover tape (7) to different speed operations.

11. methods as claimed in claim 8, move by the equipment as described in claim 1 to 7.